improve some warning messages

remove unused or moved code
this would have been done as part of the prior commit, but 'diff' was becoming confused and made as mess.
2025-08-22 01:49:28 +03:00 · 2019-04-11 13:48:43 -05:00 · 2019-04-11 13:48:43 -05:00 · 2019-04-11 13:48:26 -05:00 · 2019-04-11 12:03:04 -05:00 · 2019-04-11 12:03:04 -05:00
658 changed files with 29337 additions and 64138 deletions
--- a/.gitignore
+++ b/.gitignore
@ -30,19 +30,14 @@ make.tmpl
 /config.log
 /config.status
 /configure.scan
-/cscope.*
+/cscope.out
 /html/
-/python/
 /reports/
 /tags
 /tmp/

 coverity/coverity_model.xml

-# gcov files:
-*.gcda
-*.gcno
-
 tools/man-generator
 tools/man-generator.c

--- a/Makefile.in
+++ b/Makefile.in
@ -18,7 +18,7 @@ top_builddir = @top_builddir@
 abs_top_builddir = @abs_top_builddir@
 abs_top_srcdir = @abs_top_srcdir@

-SUBDIRS = libdm conf daemons include lib libdaemon man scripts tools
+SUBDIRS = conf daemons include lib libdaemon libdm man scripts tools

 ifeq ("@UDEV_RULES@", "yes")
  SUBDIRS += udev
@ -47,6 +47,8 @@ include $(top_srcdir)/base/Makefile
 include $(top_srcdir)/device_mapper/Makefile
 include $(top_srcdir)/test/unit/Makefile

+libdm: include
+libdaemon: include
 lib: libdaemon $(BASE_TARGET) $(DEVICE_MAPPER_TARGET)
 daemons: lib libdaemon tools
 scripts: lib
@ -54,13 +56,16 @@ tools: lib libdaemon
 po: tools daemons
 man: tools
 all_man: tools
+scripts: libdm
 test: tools daemons
 unit-test  run-unit-test: test

+lib.device-mapper: include.device-mapper
+libdm.device-mapper: include.device-mapper
 daemons.device-mapper: libdm.device-mapper
 tools.device-mapper: libdm.device-mapper
+scripts.device-mapper: include.device-mapper
 device-mapper: tools.device-mapper daemons.device-mapper man.device-mapper
-device_mapper: device-mapper

 ifeq ("@INTL@", "yes")
 lib.pofile: include.pofile
@ -76,10 +81,9 @@ daemons.cflow: tools.cflow
 cflow: include.cflow
 endif

-CSCOPE_DIRS = base daemons device_mapper include lib libdaemon scripts tools libdm test
 ifneq ("@CSCOPE_CMD@", "")
 cscope.out:
-	@CSCOPE_CMD@ -b -R $(patsubst %,-s%,$(addprefix $(srcdir)/,$(CSCOPE_DIRS)))
+	@CSCOPE_CMD@ -b -R -s$(top_srcdir)
 all: cscope.out
 endif
 DISTCLEAN_TARGETS += cscope.out
@ -112,11 +116,11 @@ rpm: dist
 	$(LN_S) -f $(abs_top_srcdir)/spec/packages.inc $(rpmbuilddir)/SOURCES
 	DM_VER=$$(cut -d- -f1 $(top_srcdir)/VERSION_DM);\
 	GIT_VER=$$(cd $(top_srcdir); git describe | cut -d- --output-delimiter=. -f2,3 || echo 0);\
-	$(SED) -e "s,\(device_mapper_version\) [0-9.]*$$,\1 $$DM_VER," \
+	sed -e "s,\(device_mapper_version\) [0-9.]*$$,\1 $$DM_VER," \
 	    -e "s,^\(Version:[^0-9%]*\)[0-9.]*$$,\1 $(LVM_VER)," \
 	    -e "s,^\(Release:[^0-9%]*\)[0-9.]\+,\1 $$GIT_VER," \
 	    $(top_srcdir)/spec/source.inc >$(rpmbuilddir)/SOURCES/source.inc
-	V=$(V) rpmbuild -v --define "_topdir $(rpmbuilddir)" -ba $(top_srcdir)/spec/lvm2.spec
+	rpmbuild -v --define "_topdir $(rpmbuilddir)" -ba $(top_srcdir)/spec/lvm2.spec

 generate: conf.generate man.generate
 	$(MAKE) -C conf generate
@ -150,31 +154,6 @@ install_all_man:
 install_tmpfiles_configuration:
 	$(MAKE) -C scripts install_tmpfiles_configuration

-help:
-	@echo -e "\nAvailable targets:"
-	@echo "  all			Default target."
-	@echo "  all_man		Build all man pages with generators."
-	@echo "  clean			Remove all compile files."
-	@echo "  device-mapper		Device mapper part of lvm2."
-	@echo "  dist			Generate distributable file."
-	@echo "  distclean		Remove all build files."
-	@echo "  generate		Generate man pages for sources."
-	@echo "  help			Display callable targets."
-	@echo "  install		Install all files."
-	@echo "  install_all_man	Install all man pages."
-	@echo "  install_cluster	Install cmirrord."
-	@echo "  install_device-mapper	Install device mapper files."
-	@echo "  install_initscripts	Install initialization scripts."
-	@echo "  install_lvm2		Install lvm2 files."
-	@echo "  install_systemd_units	Install systemd units."
-	@echo "  lcov			Generate lcov output."
-	@echo "  lcov-dated		Generate lcov with timedate suffix."
-	@echo "  lcov-reset		Reset lcov counters"
-	@echo "  man			Build man pages."
-	@echo "  rpm			Build rpm."
-	@echo "  run-unit-test		Run unit tests."
-	@echo "  tags			Generate c/etags."
-
 ifneq ("$(LCOV)", "")
 .PHONY: lcov-reset lcov lcov-dated

@ -204,8 +183,8 @@ endif
 ifneq ($(shell which ctags 2>/dev/null),)
 .PHONY: tags
 tags:
-	test -z "$(shell find $(addprefix $(top_srcdir)/,$(CSCOPE_DIRS)) -type f -name '*.[ch]' -newer tags 2>/dev/null | head -1)" || $(RM) tags
-	test -f tags || find $(addprefix $(top_srcdir)/,$(CSCOPE_DIRS)) -maxdepth 5 -type f -name '*.[ch]' -exec ctags -a '{}' +
+	test -z "$(shell find $(top_srcdir) -type f -name '*.[ch]' -newer tags 2>/dev/null | head -1)" || $(RM) tags
+	test -f tags || find $(top_srcdir) -maxdepth 5 -type f -name '*.[ch]' -exec ctags -a '{}' +

 CLEAN_TARGETS += tags
 endif
--- a/11
+++ b/11
@ -1,6 +1,7 @@
 This tree contains the LVM2 and device-mapper tools and libraries.

-This is development branch, for stable 2.02 release see stable-2.02 branch.
+This is development branch, for stable 2.02 release see 2018-06-01-stable
+branch.

 For more information about LVM2 read the changelog in the WHATS_NEW file.
 Installation instructions are in INSTALL.
@ -9,6 +10,7 @@ There is no warranty - see COPYING and COPYING.LIB.

 Tarballs are available from:
  ftp://sourceware.org/pub/lvm2/
+  ftp://sources.redhat.com/pub/lvm2/
  https://github.com/lvmteam/lvm2/releases

 The source code is stored in git:
@ -43,9 +45,6 @@ Report upstream bugs at:
 or open issues at:
  https://github.com/lvmteam/lvm2/issues

-The source code repository used until 7th June 2012 is accessible using CVS:
+The source code repository used until 7th June 2012 is accessible here:
+  http://sources.redhat.com/cgi-bin/cvsweb.cgi/LVM2/?cvsroot=lvm2.

-  cvs -d :pserver:cvs@sourceware.org:/cvs/lvm2 login cvs
-  cvs -d :pserver:cvs@sourceware.org:/cvs/lvm2 checkout LVM2
-
-The password is cvs.
--- a/2
+++ b/2
@ -1 +1 @@
-2.03.14(2)-git (2021-08-11)
+2.03.02(2)-git (2018-10-31)
--- a/2
+++ b/2
@ -1 +1 @@
-1.02.181-git (2021-08-11)
+1.02.155-git (2018-10-31)
--- a/238
+++ b/238
@ -1,230 +1,5 @@
-Version 2.03.14 - 
-==================================
-  Print info message with too many or too large archived files.
-  Reduce metadata readings during scanning phase.
-  Optimize computation of crc32 check sum with multiple PVs.
-  Enhance recover path on cache creation failure.
-  Filter out unsupported MQ/SMQ cache policy setting.
-  Fix memleak in mpath filter.
-  Support newer location for VDO statistics.
-  Add support for VDO async-unsage write policy.
-  Improve lvm_import_vdo script.
-  Support VDO LV with lvcreate -ky.
-  Fix lvconvert for VDO LV bigger then 2T.
-  Create VDO LVs automatically without zeroing.
-  Rename vdoimport to lvm_import_vdo.
-
-Version 2.03.13 - 11th August 2021
-==================================
-  Changes in udev support:
-  - obtain_device_list_from_udev defaults to 0.
-  - see devices/external_device_info_source,
-    devices/obtain_device_list_from_udev, and devices/multipath_wwids_file help
-    in lvm.conf
-  Fix devices file handling of loop with deleted backing file.
-  Fix devices file handling of scsi_debug WWIDs.
-  Fix many static analysis issues.
-  Support --poolmetadataspare with vgsplit and vgmerge.
-  Fix detection of active components of external origin volume.
-  Add vdoimport tool to support conversion of VDO volumes.
-  Support configurable allocation/vdo_pool_header_size.
-  Fix handling of lvconvert --type vdo-pool --virtualsize.
-  Simplified handling of archive() and backup() internal calls.
-  Add 'idm' locking type for IDM lock manager.
-  Fix load of kvdo target when it is not present in memory (2.03.12).
-
-Version 2.03.12 - 07th May 2021
-===============================
-  Allow attaching cache to thin data volume.
-  Fix memleak when generating list of outdated pvs.
-  Better hyphenation usage in man pages.
-  Replace use of deprecated security_context_t with char*.
-  Configure supports AIO_LIBS and AIO_CFLAGS.
-  Improve build process for static builds.
-  New --setautoactivation option to modify LV or VG auto activation.
-  New metadata based autoactivation property for LVs and VGs.
-  Improve signal handling with lvmpolld.
-  Signal handler can interrupt command also for SIGTERM.
-  Lvreduce --yes support.
-  Add configure option --with/out-symvers for non-glibc builds.
-  Report error when the filesystem is missing on fsadm resized volume.
-  Handle better blockdev with --getsize64 support for fsadm.
-  Do not include editline/history.h when using editline library.
-  Support error and zero segtype for thin-pool data for testing.
-  Support mixed extension for striped, error and zero segtypes.
-  Support resize also for stacked virtual volumes.
-  Skip dm-zero devices just like with dm-error target.
-  Reduce ioctl() calls when checking target status.
-  Merge polling does not fail, when LV is found to be already merged.
-  Poll volumes with at least 100ms delays.
-  Do not flush dm cache when cached LV is going to be removed.
-  New lvmlockctl_kill_command configuration option.
-  Support interruption while waiting on device close before deactivation.
-  Flush thin-pool messages before removing more thin volumes.
-  Improve hash function with less collisions and make it faster.
-  Reduce ioctl count when deactivating volumes.
-  Reduce number of metadata parsing.
-  Enhance performance of lvremove and vgremove commands.
-  Support interruption when taking archive and backup.
-  Accelerate large lvremoves.
-  Speedup search for cached device nodes.
-  Speedup command initialization.
-  Add devices file feature, off by default for now.
-  Support extension of writecached volumes.
-  Fix problem with unbound variable usage within fsadm.
-  Fix IMSM MD RAID detection on 4k devices.
-  Check for presence of VDO target before starting any conversion.
-  Support metatadata profiles with volume VDO pool conversions.
-  Support -Zn for conversion of already formated VDO pools.
-  Avoid removing LVs on error path of lvconvert during creation volumes.
-  Fix crashing lvdisplay when thin volume was waiting for merge.
-  Support option --errorwhenfull when converting volume to thin-pool.
-  Improve thin-performance profile support conversion to thin-pool.
-  Add workaround to avoid read of internal 'converted' devices.
-  Prohibit merging snapshot into the read-only thick snapshot origin.
-  Restore support for flipping rw/r permissions for thin snapshot origin.
-  Support resize of cached volumes.
-  Disable autoactivation with global/event_activation=0.
-  Check if lvcreate passes read_only_volume_list with tags and skips zeroing.
-  Allocation prints better error when metadata cannot fit on a single PV.
-  Pvmove can better resolve full thin-pool tree move.
-  Limit pool metadata spare to 16GiB.
-  Improves conversion and allocation of pool metadata.
-  Support thin pool metadata 15.88GiB, adds 64MiB, thin_pool_crop_metadata=0.
-  Enhance lvdisplay to report raid available/partial.
-  Support online rename of VDO pools.
-  Improve removal of pmspare when last pool is removed.
-  Fix problem with wiping of converted LVs.
-  Fix memleak in scanning  (2.03.11).
-  Fix corner case allocation for thin-pools.
-
-Version 2.03.11 - 08th January 2021
+Version 2.03.02 - 
 ===================================
-  Fix pvck handling MDA at offset different from 4096.
-  Partial or degraded activation of writecache is not allowed.
-  Enhance error handling for fsadm and handle correct fsck result.
-  Dmeventd lvm plugin ignores higher reserved_stack lvm.conf values.
-  Support using BLKZEROOUT for clearing devices.
-  Support interruption when wipping LVs.
-  Support interruption for bcache waiting.
-  Fix bcache when device has too many failing writes.
-  Fix bcache waiting for IO completion with failing disks.
-  Configure use own python path name order to prefer using python3.
-  Add configure --enable-editline support as an alternative to readline.
-  Enhance reporting and error handling when creating thin volumes.
-  Enable vgsplit for VDO volumes.
-  Lvextend of vdo pool volumes ensure at least 1 new VDO slab is added.
-  Use revert_lv() on reload error path after vg_revert().
-  Configure --with-integrity enabled.
-  Restore lost signal blocking while VG lock is held.
-  Improve estimation of needed extents when creating thin-pool.
-  Use extra 1% when resizing thin-pool metadata LV with --use-policy.
-  Enhance --use-policy percentage rounding.
-  Configure --with-vdo and --with-writecache as internal segments.
-  Improving VDO man page examples.
-  Allow pvmove of writecache origin.
-  Report integrity fields.
-  Integrity volumes defaults to journal mode.
-  Switch code base to use flexible array syntax.
-  Fix 64bit math when calculation cachevol size.
-  Preserve uint32_t for seqno handling.
-  Switch from mmap to plain read when loading regular files.
-  Update lvmvdo man page and better explain DISCARD usage.
-
-Version 2.03.10 - 09th August 2020
-==================================
-  Add writecache and integrity support to lvmdbusd.
-  Generate unique cachevol name when default required from lvcreate.
-  Converting RAID1 volume to one with same number of legs now succeeds with a
-  warning.
-  Fix conversion to raid from striped lagging type.
-  Fix conversion to 'mirrored' mirror log with larger regionsize.
-  Zero pool metadata on allocation (disable with allocation/zero_metadata=0).
-  Failure in zeroing or wiping will fail command (bypass with -Zn, -Wn).
-  Add lvcreate of new cache or writecache lv with single command.
-  Fix running out of free buffers for async writing for larger writes.
-  Add integrity with raid capability.
-  Fix support for lvconvert --repair used by foreign apps (i.e. Docker).
-
-Version 2.03.09 - 26th March 2020
-=================================
-  Fix formating of vdopool (vdo_slab_size_mb was smaller by 2 bits).
-  Fix showing of a dm kernel error when uncaching a volume with cachevol.
-
-Version 2.03.08 - 11th February 2020
-====================================
-  Prevent problematic snapshots of writecache volumes.
-  Add error handling for failing allocation in _reserve_area().
-  Fix memleak in syncing of internal cache.
-  Fix pvck dump_current_text memleak.
-  Fix lvmlockd result code on error path for _query_lock_lv().
-  Update pvck man page and help output.
-  Reject invalid writecache high/low_watermark setting.
-  Report writecache status.
-  Accept more output lines from vdo_format.
-  Prohibit reshaping of stacked raid LVs.
-  Avoid running cache input arg validation when creating vdo pool.
-  Prevent raid reshaping of stacked volumes.
-  Added VDO lvmdbusd methods for enable/disable compression & dedupe.
-  Added VDO lvmdbusd method for converting LV to VDO pool.
-
-Version 2.03.07 - 30th November 2019
-====================================
-  Subcommand in vgck for repairing headers and metadata.
-  Ensure minimum required region size on striped RaidLV creation.
-  Fix resize of thin-pool with data and metadata of different segtype.
-  Improve mirror type leg splitting.
-  Improve error path handling in daemons on shutdown.
-  Fix activation order when removing merged snapshot.
-  Experimental VDO support for lvmdbusd.
-
-Version 2.03.06 - 23rd October 2019
-===================================
-  Add _cpool suffix to cache-pool LV name when used by caching LV.
-  No longer store extra UUID for cmeta and cdata cachevol layer.
-  Enhance activation of cache devices with cachevols.
-  Add _cvol in list of protected suffixes and start use it with DM UUID.
-  Rename LV converted to cachevol to use _cvol suffix.
-  Use normal LVs for wiping of cachevols.
-  Reload cleanered cache DM only with cleaner policy.
-  Fix cmd return when zeroing of cachevol fails.
-  Extend lvs to show all VDO properties.
-  Preserve VDO write policy with vdopool.
-  Increase default vdo bio threads to 4.
-  Continue report when cache_status fails.
-  Add support for DM_DEVICE_GET_TARGET_VERSION into device_mapper.
-  Fix cmirrord usage of header files from device_mapper subdir.
-  Allow standalone activation of VDO pool just like for thin-pools.
-  Activate thin-pool layered volume as 'read-only' device.
-  Ignore crypto devices with UUID signature CRYPT-SUBDEV.
-  Enhance validation for thin and cache pool conversion and swapping.
-  Improve internal removal of cached devices.
-  Synchronize with udev when dropping snapshot.
-  Add missing device synchronization point before removing pvmove node.
-  Correctly set read_ahead for LVs when pvmove is finished.
-  Remove unsupported OPTIONS+="event_timeout" udev rule from 11-dm-lvm.rules.
-  Prevent creating VGs with PVs with different logical block sizes.
-  Fix metadata writes from corrupting with large physical block size.
-
-Version 2.03.05 - 15th June 2019
-================================
-  Fix command definition for pvchange -a.
-  Add vgck --updatemetadata command that will repair metadata problems.
-  Improve VG reading to work if one good copy of metadata is found.
-  Report/display/scan commands that read VGs will no longer write/repair.
-  Move metadata repairs from VG reading to VG writing.
-  Add config setting md_component_checks to control MD component checks.
-  Add end of device MD component checks when dev has no udev info.
-
-Version 2.03.04 - 10th June 2019
-================================
-  Remove unused_duplicate_devs from cmd causing segfault in dmeventd.
-
-Version 2.03.03 - 07th June 2019
-================================
-  Report no_discard_passdown for cache LVs with lvs -o+kernel_discards.
-  Add pvck --dump option to extract metadata.
-  Fix signal delivery checking race in libdaemon (lvmetad).
  Add missing Before=shutdown.target to LVM2 services to fix shutdown ordering.
  Skip autoactivation for a PV when PV size does not match device size.
  Remove first-pvscan-initialization which should no longer be needed.
@ -257,14 +32,10 @@ Version 2.03.03 - 07th June 2019
  Fix missing unlock on lvm2 dmeventd plugin error path initialization.
  Improve Makefile dependency tracking.
  Move VDO support towards V2 target (6.2) support.
-
-Version 2.03.02 - 18th December 2018
-====================================
  Fix missing proper initialization of pv_list struct when adding pv.
-  Fix (de)activation of RaidLVs with visible SubLVs.
-  Prohibit mirrored 'mirror' log via lvcreate and lvconvert.
+  Fix (de)activation of RaidLVs with visible SubLVs
+  Prohibit mirrored 'mirror' log via lvcreate and lvconvert
  Use sync io if async io_setup fails, or use_aio=0 is set in config.
-  Fix more issues reported by coverity scan.

 Version 2.03.01 - 31st October 2018
 ===================================
@ -296,6 +67,7 @@ Version 2.03.00 - 10th October 2018
  Remove clvmd
  Remove lvmlib (api)
  Remove lvmetad
+  lvconvert: provide possible layouts between linear and striped/raid
  Use versionsort to fix archive file expiry beyond 100000 files.

 Version 2.02.178-rc1 - 24th May 2018
@ -1815,7 +1587,7 @@ Version 2.02.105 - 20th January 2014
  Allow lvmetad to reuse stale socket.
  Only unlink lvmetad socket on error if created by the same process.
  Append missing newline to lvmetad missing socket path error message.
-  Check for non-zero alignment in _text_pv_add_metadata_area() to not div by 0.
+  Check for non-zero aligment in _text_pv_add_metadata_area() to not div by 0.
  Add allocation/use_blkid_wiping to lvm.conf to enable blkid wiping.
  Enable blkid_wiping by default if the blkid library is present.
  Add configure --disable-blkid_wiping to disable libblkid signature detection.
--- a/57
+++ b/57
@ -1,63 +1,10 @@
-Version 1.02.181 - 
-===================================
-  Add IMA support with 'dmsetup measure' command.
-  Add defines DM_NAME_LIST_FLAG_HAS_UUID, DM_NAME_LIST_FLAG_DOESNT_HAVE_UUID.
-  Enhance tracking of activated devices when preloading dm tree.
-  Fix bug in construction of cache table line (regression from 1.02.159).
-
-Version 1.02.179 - 11th August 2021
-===================================
-
-Version 1.02.177 - 07th May 2021
-================================
-  Configure proceeds without libaio to allow build of device-mapper only.
-  Fix symbol versioning build with -O2 -flto.
-  Add dm_tree_node_add_thin_pool_target_v1 with crop_metadata support.
-
-Version 1.02.175 - 08th January 2021
+Version 1.02.155 - 
 ====================================
-
-Version 1.02.173 - 09th August 2020
-===================================
-  Add support for VDO in blkdeactivate script.
-
-Version 1.02.171 - 26th March 2020
-==================================
-  Try to remove all created devices on dm preload tree error path.
-  Fix dm_list interators with gcc 10 optimization (-ftree-pta).
-  Dmeventd handles timer without looping on short intervals.
-
-Version 1.02.169 - 11th February 2020
-=====================================
-  Enhance error messages for device creation.
-
-Version 1.02.167 - 30th November 2019
-=====================================
-
-Version 1.02.165 - 23rd October 2019
-====================================
-  Add support for DM_DEVICE_GET_TARGET_VERSION.
-  Add debug of dmsetup udevcomplete with hexa print DM_COOKIE_COMPLETED.
-  Fix versioning of dm_stats_create_region and dm_stats_create_region.
-
-Version 1.02.163 - 15th June 2019
-=================================
-
-Version 1.02.161 - 10th June 2019
-=================================
-
-Version 1.02.159 - 07th June 2019
-=================================
-  Parsing of cache status understand no_discard_passdown.
  Ensure migration_threshold for cache is at least 8 chunks.
-
-Version 1.02.155 - 18th December 2018
-=====================================
  Include correct internal header inside libdm list.c.
  Enhance ioctl flattening and add parameters only when needed.
  Add DM_DEVICE_ARM_POLL for API completness matching kernel.
  Do not add parameters for RESUME with DM_DEVICE_CREATE dm task.
-  Fix dmstats report printing no output.

 Version 1.02.153 - 31st October 2018
 ====================================
@ -567,7 +514,7 @@ Version 1.02.86 - 23rd June 2014
  Add DM_REPORT_FIELD_TYPE_STRING_LIST: separate string and string list fields.
  Add dm_str_list to libdevmapper for string list type definition and its reuse.
  Add dmsetup -S/--select to define selection criteria for dmsetup reports.
-  Add dm_report_init_with_selection to initialize report with selection criteria.
+  Add dm_report_init_with_selection to intialize report with selection criteria.
  Add DM_REPORT_FIELD_TYPE_SIZE: separate number and size reporting fields.
  Use RemoveOnStop for dm-event.socket systemd unit.
  Document env var 'DM_DEFAULT_NAME_MANGLING_MODE' in dmsetup man page.
--- a/aclocal.m4
+++ b/aclocal.m4
@ -1,6 +1,6 @@
-# generated automatically by aclocal 1.16.2 -*- Autoconf -*-
+# generated automatically by aclocal 1.15.1 -*- Autoconf -*-

-# Copyright (C) 1996-2020 Free Software Foundation, Inc.
+# Copyright (C) 1996-2017 Free Software Foundation, Inc.

 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@ -413,7 +413,7 @@ AS_IF([test "$AS_TR_SH([with_]m4_tolower([$1]))" = "yes"],
        [AC_DEFINE([HAVE_][$1], 1, [Enable ]m4_tolower([$1])[ support])])
 ])dnl PKG_HAVE_DEFINE_WITH_MODULES

-# Copyright (C) 1999-2020 Free Software Foundation, Inc.
+# Copyright (C) 1999-2017 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@ -446,12 +446,10 @@ AC_DEFUN([AM_PATH_PYTHON],
 [
  dnl Find a Python interpreter.  Python versions prior to 2.0 are not
  dnl supported. (2.0 was released on October 16, 2000).
+  dnl FIXME: Remove the need to hard-code Python versions here.
  m4_define_default([_AM_PYTHON_INTERPRETER_LIST],
-[python python2 python3 dnl
- python3.9 python3.8 python3.7 python3.6 python3.5 python3.4 python3.3 dnl
- python3.2 python3.1 python3.0 dnl
- python2.7 python2.6 python2.5 python2.4 python2.3 python2.2 python2.1 dnl
- python2.0])
+[python python2 python3 python3.5 python3.4 python3.3 python3.2 python3.1 python3.0 python2.7 dnl
+ python2.6 python2.5 python2.4 python2.3 python2.2 python2.1 python2.0])

  AC_ARG_VAR([PYTHON], [the Python interpreter])

@ -496,14 +494,12 @@ AC_DEFUN([AM_PATH_PYTHON],
    m4_default([$3], [AC_MSG_ERROR([no suitable Python interpreter found])])
  else

-  dnl Query Python for its version number.  Although site.py simply uses
-  dnl sys.version[:3], printing that failed with Python 3.10, since the
-  dnl trailing zero was eliminated. So now we output just the major
-  dnl and minor version numbers, as numbers. Apparently the tertiary
-  dnl version is not of interest.
+  dnl Query Python for its version number.  Getting [:3] seems to be
+  dnl the best way to do this; it's what "site.py" does in the standard
+  dnl library.

  AC_CACHE_CHECK([for $am_display_PYTHON version], [am_cv_python_version],
-    [am_cv_python_version=`$PYTHON -c "import sys; print('%u.%u' % sys.version_info[[:2]])"`])
+    [am_cv_python_version=`$PYTHON -c "import sys; sys.stdout.write(sys.version[[:3]])"`])
  AC_SUBST([PYTHON_VERSION], [$am_cv_python_version])

  dnl Use the values of $prefix and $exec_prefix for the corresponding
@ -653,7 +649,7 @@ for i in list(range(0, 4)): minverhex = (minverhex << 8) + minver[[i]]
 sys.exit(sys.hexversion < minverhex)"
  AS_IF([AM_RUN_LOG([$1 -c "$prog"])], [$3], [$4])])

-# Copyright (C) 2001-2020 Free Software Foundation, Inc.
+# Copyright (C) 2001-2017 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
--- a/base/data-struct/hash.c
+++ b/base/data-struct/hash.c
@ -22,26 +22,17 @@ struct dm_hash_node {
 	void *data;
 	unsigned data_len;
 	unsigned keylen;
-	unsigned hash;
 	char key[0];
 };

 struct dm_hash_table {
 	unsigned num_nodes;
-	unsigned num_hint;
-	unsigned mask_slots;    /* (slots - 1) -> used as hash mask */
-	unsigned collisions;    /* Collissions of hash keys */
-	unsigned search;        /* How many keys were searched */
-	unsigned found;         /* How many nodes were found */
-	unsigned same_hash;     /* Was there a colision with same masked hash and len ? */
+	unsigned num_slots;
 	struct dm_hash_node **slots;
 };

-#if 0 /* TO BE REMOVED */
-static unsigned _hash(const void *key, unsigned len)
-{
-	/* Permutation of the Integers 0 through 255 */
-	static unsigned char _nums[] = {
+/* Permutation of the Integers 0 through 255 */
+static unsigned char _nums[] = {
 	1, 14, 110, 25, 97, 174, 132, 119, 138, 170, 125, 118, 27, 233, 140, 51,
 	87, 197, 177, 107, 234, 169, 56, 68, 30, 7, 173, 73, 188, 40, 36, 65,
 	49, 213, 104, 190, 57, 211, 148, 223, 48, 115, 15, 2, 67, 186, 210, 28,
@ -66,16 +57,29 @@ static unsigned _hash(const void *key, unsigned len)
 	44, 38, 31, 149, 135, 0, 216, 52, 63, 23, 37, 69, 39, 117, 146, 184,
 	163, 200, 222, 235, 248, 243, 219, 10, 152, 131, 123, 229, 203, 76, 120,
 	209
-	};
+};

-	const uint8_t *str = key;
-	unsigned h = 0, g;
+static struct dm_hash_node *_create_node(const char *str, unsigned len)
+{
+	struct dm_hash_node *n = malloc(sizeof(*n) + len);
+
+	if (n) {
+		memcpy(n->key, str, len);
+		n->keylen = len;
+	}
+
+	return n;
+}
+
+static unsigned long _hash(const char *str, unsigned len)
+{
+	unsigned long h = 0, g;
 	unsigned i;

 	for (i = 0; i < len; i++) {
 		h <<= 4;
-		h += _nums[*str++];
-		g = h & ((unsigned) 0xf << 16u);
+		h += _nums[(unsigned char) *str++];
+		g = h & ((unsigned long) 0xf << 16u);
 		if (g) {
 			h ^= g >> 16u;
 			h ^= g >> 5u;
@ -85,99 +89,30 @@ static unsigned _hash(const void *key, unsigned len)
 	return h;
 }

-/* In-kernel DM hashing, still lots of collisions */
-static unsigned _hash_in_kernel(const char *key, unsigned len)
-{
-	const unsigned char *str = (unsigned char *)key;
-	const unsigned hash_mult = 2654435387U;
-	unsigned hash = 0, i;
-
-	for (i = 0; i < len; ++i)
-		hash = (hash + str[i]) * hash_mult;
-
-	return hash;
-}
-#endif
-
-#undef get16bits
-#if (defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__)))
-#define get16bits(d) (*((const uint16_t *) (d)))
-#endif
-
-#if !defined (get16bits)
-#define get16bits(d) ((((uint32_t)(((const uint8_t *)(d))[1])) << 8)\
-                       +(uint32_t)(((const uint8_t *)(d))[0]) )
-#endif
-
-/*
- * Adapted Bob Jenkins hash to read by 2 bytes if possible.
- * https://secure.wikimedia.org/wikipedia/en/wiki/Jenkins_hash_function
- *
- * Reduces amount of hash collisions
- */
-static unsigned _hash(const void *key, unsigned len)
-{
-	const uint8_t *str = (uint8_t*) key;
-	unsigned hash = 0, i;
-	unsigned sz = len / 2;
-
-	for(i = 0; i < sz; ++i) {
-		hash += get16bits(str + 2 * i);
-		hash += (hash << 10);
-		hash ^= (hash >> 6);
-	}
-
-	if (len & 1) {
-		hash += str[len - 1];
-		hash += (hash << 10);
-		hash ^= (hash >> 6);
-	}
-
-	hash += (hash << 3);
-	hash ^= (hash >> 11);
-	hash += (hash << 15);
-
-	return hash;
-}
-
-static struct dm_hash_node *_create_node(const void *key, unsigned len)
-{
-	struct dm_hash_node *n = malloc(sizeof(*n) + len);
-
-	if (n) {
-		memcpy(n->key, key, len);
-		n->keylen = len;
-	}
-
-	return n;
-}
-
 struct dm_hash_table *dm_hash_create(unsigned size_hint)
 {
 	size_t len;
 	unsigned new_size = 16u;
 	struct dm_hash_table *hc = zalloc(sizeof(*hc));

-	if (!hc) {
-		log_error("Failed to allocate memory for hash.");
-		return 0;
-	}
-
-	hc->num_hint = size_hint;
+	if (!hc)
+		return_0;

 	/* round size hint up to a power of two */
 	while (new_size < size_hint)
 		new_size = new_size << 1;

-	hc->mask_slots = new_size - 1;
+	hc->num_slots = new_size;
 	len = sizeof(*(hc->slots)) * new_size;
-	if (!(hc->slots = zalloc(len))) {
-		free(hc);
-		log_error("Failed to allocate slots for hash.");
-		return 0;
-	}
+	if (!(hc->slots = zalloc(len)))
+		goto_bad;

 	return hc;
+
+      bad:
+	free(hc->slots);
+	free(hc);
+	return 0;
 }

 static void _free_nodes(struct dm_hash_table *t)
@ -185,16 +120,7 @@ static void _free_nodes(struct dm_hash_table *t)
 	struct dm_hash_node *c, *n;
 	unsigned i;

-#ifdef DEBUG
-	log_debug("Free hash hint:%d slots:%d nodes:%d (s:%d f:%d c:%d h:%d)",
-		  t->num_hint, t->mask_slots + 1, t->num_nodes,
-		  t->search, t->found, t->collisions, t->same_hash);
-#endif
-
-	if (!t->num_nodes)
-		return;
-
-	for (i = 0; i <= t->mask_slots; i++)
+	for (i = 0; i < t->num_slots; i++)
 		for (c = t->slots[i]; c; c = n) {
 			n = c->next;
 			free(c);
@ -208,30 +134,21 @@ void dm_hash_destroy(struct dm_hash_table *t)
 	free(t);
 }

-static struct dm_hash_node **_findh(struct dm_hash_table *t, const void *key,
-				    uint32_t len, unsigned hash)
-{
-	struct dm_hash_node **c;
-
-	++t->search;
-	for (c = &t->slots[hash & t->mask_slots]; *c; c = &((*c)->next)) {
-		if ((*c)->keylen == len && (*c)->hash == hash) {
-			if (!memcmp(key, (*c)->key, len)) {
-				++t->found;
-				break;
-			}
-			++t->same_hash;
-		}
-		++t->collisions;
-	}
-
-	return c;
-}
-
 static struct dm_hash_node **_find(struct dm_hash_table *t, const void *key,
 				   uint32_t len)
 {
-	return _findh(t, key, len, _hash(key, len));
+	unsigned h = _hash(key, len) & (t->num_slots - 1);
+	struct dm_hash_node **c;
+
+	for (c = &t->slots[h]; *c; c = &((*c)->next)) {
+		if ((*c)->keylen != len)
+			continue;
+
+		if (!memcmp(key, (*c)->key, len))
+			break;
+	}
+
+	return c;
 }

 void *dm_hash_lookup_binary(struct dm_hash_table *t, const void *key,
@ -245,8 +162,7 @@ void *dm_hash_lookup_binary(struct dm_hash_table *t, const void *key,
 int dm_hash_insert_binary(struct dm_hash_table *t, const void *key,
 			  uint32_t len, void *data)
 {
-	unsigned hash = _hash(key, len);
-	struct dm_hash_node **c = _findh(t, key, len, hash);
+	struct dm_hash_node **c = _find(t, key, len);

 	if (*c)
 		(*c)->data = data;
@ -257,7 +173,6 @@ int dm_hash_insert_binary(struct dm_hash_table *t, const void *key,
 			return 0;

 		n->data = data;
-		n->hash = hash;
 		n->next = 0;
 		*c = n;
 		t->num_nodes++;
@ -301,7 +216,7 @@ static struct dm_hash_node **_find_str_with_val(struct dm_hash_table *t,
 	struct dm_hash_node **c;
 	unsigned h;
       
-	h = _hash(key, len) & t->mask_slots;
+	h = _hash(key, len) & (t->num_slots - 1);

 	for (c = &t->slots[h]; *c; c = &((*c)->next)) {
 		if ((*c)->keylen != len)
@ -332,7 +247,7 @@ int dm_hash_insert_allow_multiple(struct dm_hash_table *t, const char *key,
 	n->data = (void *)val;
 	n->data_len = val_len;

-	h = _hash(key, len) & t->mask_slots;
+	h = _hash(key, len) & (t->num_slots - 1);

 	first = t->slots[h];

@ -400,7 +315,7 @@ void *dm_hash_lookup_with_count(struct dm_hash_table *t, const char *key, int *c

 	*count = 0;

-	h = _hash(key, len) & t->mask_slots;
+	h = _hash(key, len) & (t->num_slots - 1);

 	for (c = &t->slots[h]; *c; c = &((*c)->next)) {
 		if ((*c)->keylen != len)
@ -429,7 +344,7 @@ void dm_hash_iter(struct dm_hash_table *t, dm_hash_iterate_fn f)
 	struct dm_hash_node *c, *n;
 	unsigned i;

-	for (i = 0; i <= t->mask_slots; i++)
+	for (i = 0; i < t->num_slots; i++)
 		for (c = t->slots[i]; c; c = n) {
 			n = c->next;
 			f(c->data);
@ -439,8 +354,8 @@ void dm_hash_iter(struct dm_hash_table *t, dm_hash_iterate_fn f)
 void dm_hash_wipe(struct dm_hash_table *t)
 {
 	_free_nodes(t);
-	memset(t->slots, 0, sizeof(struct dm_hash_node *) * (t->mask_slots + 1));
-	t->num_nodes = t->collisions = t->search = t->same_hash = 0u;
+	memset(t->slots, 0, sizeof(struct dm_hash_node *) * t->num_slots);
+	t->num_nodes = 0u;
 }

 char *dm_hash_get_key(struct dm_hash_table *t __attribute__((unused)),
@ -460,7 +375,7 @@ static struct dm_hash_node *_next_slot(struct dm_hash_table *t, unsigned s)
 	struct dm_hash_node *c = NULL;
 	unsigned i;

-	for (i = s; i <= t->mask_slots && !c; i++)
+	for (i = s; i < t->num_slots && !c; i++)
 		c = t->slots[i];

 	return c;
@ -473,5 +388,7 @@ struct dm_hash_node *dm_hash_get_first(struct dm_hash_table *t)

 struct dm_hash_node *dm_hash_get_next(struct dm_hash_table *t, struct dm_hash_node *n)
 {
-	return n->next ? n->next : _next_slot(t, (n->hash & t->mask_slots) + 1);
+	unsigned h = _hash(n->key, n->keylen) & (t->num_slots - 1);
+
+	return n->next ? n->next : _next_slot(t, h + 1);
 }
--- a/base/data-struct/list.h
+++ b/base/data-struct/list.h
@ -1,8 +1,6 @@
 #ifndef BASE_DATA_STRUCT_LIST_H
 #define BASE_DATA_STRUCT_LIST_H

-#include "base/memory/container_of.h"
-
 //----------------------------------------------------------------

 /*
@ -100,7 +98,7 @@ struct dm_list *dm_list_next(const struct dm_list *head, const struct dm_list *e
 * contained in a structure of type t, return the containing structure.
 */
 #define dm_list_struct_base(v, t, head) \
-    container_of(v, t, head)
+    ((t *)((const char *)(v) - (const char *)&((t *) 0)->head))

 /*
 * Given the address v of an instance of 'struct dm_list list' contained in
@ -113,7 +111,7 @@ struct dm_list *dm_list_next(const struct dm_list *head, const struct dm_list *e
 * return another element f.
 */
 #define dm_struct_field(v, t, e, f) \
-    (((t *)((uintptr_t)(v) - offsetof(t, e)))->f)
+    (((t *)((uintptr_t)(v) - (uintptr_t)&((t *) 0)->e))->f)

 /*
 * Given the address v of a known element e in a known structure of type t,
--- a/base/data-struct/radix-tree-adaptive.c
+++ b/base/data-struct/radix-tree-adaptive.c
@ -47,7 +47,7 @@ struct value_chain {
 struct prefix_chain {
 	struct value child;
 	unsigned len;
-	uint8_t prefix[];
+	uint8_t prefix[0];
 };

 struct node4 {
@ -1032,7 +1032,7 @@ void radix_tree_iterate(struct radix_tree *rt, uint8_t *kb, uint8_t *ke,
 {
 	struct lookup_result lr = _lookup_prefix(&rt->root, kb, ke);
 	if (lr.kb == ke || _prefix_chain_matches(&lr, ke))
-		(void) _iterate(lr.v, it);
+        	_iterate(lr.v, it);
 }

 //----------------------------------------------------------------
--- a/base/memory/container_of.h
+++ b/base/memory/container_of.h
@ -1,4 +1,4 @@
-// Copyright (C) 2018 - 2020 Red Hat, Inc. All rights reserved.
+// Copyright (C) 2018 Red Hat, Inc. All rights reserved.
 // 
 // This file is part of LVM2.
 //
@ -13,12 +13,10 @@
 #ifndef BASE_MEMORY_CONTAINER_OF_H
 #define BASE_MEMORY_CONTAINER_OF_H

-#include <stddef.h>  // offsetof
-
 //----------------------------------------------------------------

 #define container_of(v, t, head) \
-    ((t *)((char *)(v) - offsetof(t, head)))
+    ((t *)((const char *)(v) - (const char *)&((t *) 0)->head))

 //----------------------------------------------------------------

--- a/conf/example.conf.in
+++ b/conf/example.conf.in
--- a/conf/lvmlocal.conf.in
+++ b/conf/lvmlocal.conf.in
@ -28,13 +28,13 @@ local {
 	# main configuration file, e.g. lvm.conf. When used, it must be set to
 	# a unique value among all hosts sharing access to the storage,
 	# e.g. a host name.
-	#
+	# 
 	# Example
 	# Set no system ID:
 	# system_id = ""
 	# Set the system_id to a specific name:
 	# system_id = "host1"
-	#
+	# 
 	# This configuration option has an automatic default value.
 	# system_id = ""

--- a/996
+++ b/996
--- a/configure.ac
+++ b/configure.ac
--- a/coverity/coverity_model.c
+++ b/coverity/coverity_model.c
@ -46,7 +46,6 @@ const char *find_config_tree_str(struct cmd_context *cmd, int id, struct profile
 	return "STRING";
 }

-/*
 struct logical_volume *origin_from_cow(const struct logical_volume *lv)
 {
 	if (lv)
@ -54,7 +53,6 @@ struct logical_volume *origin_from_cow(const struct logical_volume *lv)

 	__coverity_panic__();
 }
-*/

 /* simple_memccpy() from glibc */
 void *memccpy(void *dest, const void *src, int c, size_t n)
--- a/daemons/cmirrord/Makefile.in
+++ b/daemons/cmirrord/Makefile.in
@ -22,9 +22,6 @@ SOURCES = clogd.c cluster.c compat.c functions.c link_mon.c local.c logging.c

 TARGETS = cmirrord

-CFLOW_SOURCES = $(addprefix $(srcdir)/, $(SOURCES))
-CFLOW_TARGET := $(TARGETS)
-
 include $(top_builddir)/make.tmpl

 LMLIBS += $(CPG_LIBS)
@ -36,8 +33,6 @@ cmirrord: $(OBJECTS)
 	$(Q) $(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJECTS) \
 		$(LMLIBS) -L$(top_builddir)/libdm -ldevmapper $(LIBS)

-install_cluster: $(TARGETS)
+install: $(TARGETS)
 	@echo "    [INSTALL] $<"
-	$(Q) $(INSTALL_PROGRAM) -D $< $(usrsbindir)/$(<F)
-
-install: install_cluster
+	$(Q) $(INSTALL_PROGRAM) -D cmirrord $(usrsbindir)/cmirrord
--- a/daemons/cmirrord/clogd.c
+++ b/daemons/cmirrord/clogd.c
@ -245,7 +245,6 @@ static void daemonize(void)
 	}

 	LOG_OPEN("cmirrord", LOG_PID, LOG_DAEMON);
-	/* coverity[leaked_handle] devnull cannot leak here */
 }

 /*
--- a/daemons/cmirrord/cluster.c
+++ b/daemons/cmirrord/cluster.c
@ -1383,7 +1383,7 @@ static void cpg_leave_callback(struct clog_cpg *match,
 			       size_t member_list_entries)
 {
 	unsigned i;
-	int j, fd = -1;
+	int j, fd;
 	uint32_t lowest = match->lowest_id;
 	struct clog_request *rq, *n;
 	struct checkpoint_data *p_cp, *c_cp;
@ -1548,7 +1548,7 @@ static void cpg_config_callback(cpg_handle_t handle, const struct cpg_name *gnam
 				   member_list, member_list_entries);
 }

-static cpg_callbacks_t cpg_callbacks = {
+cpg_callbacks_t cpg_callbacks = {
 	.cpg_deliver_fn = cpg_message_callback,
 	.cpg_confchg_fn = cpg_config_callback,
 };
--- a/daemons/cmirrord/cluster.h
+++ b/daemons/cmirrord/cluster.h
@ -12,8 +12,8 @@
 #ifndef _LVM_CLOG_CLUSTER_H
 #define _LVM_CLOG_CLUSTER_H

-#include "libdm/libdevmapper.h"
 #include "libdm/misc/dm-log-userspace.h"
+#include "libdm/libdevmapper.h"

 #define DM_ULOG_RESPONSE 0x1000U /* in last byte of 32-bit value */
 #define DM_ULOG_CHECKPOINT_READY 21
@ -39,7 +39,7 @@ struct clog_request {
 	 * machine.  If the two are equal, there is no need
 	 * to do endian conversions.
 	 */
-	union version_u {
+	union {
 		uint64_t version[2]; /* LE version and native version */
 		struct dm_list list;
 	} u;
--- a/daemons/cmirrord/functions.c
+++ b/daemons/cmirrord/functions.c
@ -378,7 +378,7 @@ static int _clog_ctr(char *uuid, uint64_t luid,
 	uint32_t block_on_error = 0;

 	int disk_log;
-	char disk_path[PATH_MAX] = { 0 };
+	char disk_path[PATH_MAX];
 	int unlink_path = 0;
 	long page_size;
 	int pages;
@ -658,7 +658,8 @@ static int clog_dtr(struct dm_ulog_request *rq)
 	if (lc->disk_fd != -1 && close(lc->disk_fd))
 		LOG_ERROR("Failed to close disk log: %s",
 			  strerror(errno));
-	free(lc->disk_buffer);
+	if (lc->disk_buffer)
+		free(lc->disk_buffer);
 	free(lc->clean_bits);
 	free(lc->sync_bits);
 	free(lc);
--- a/daemons/cmirrord/functions.h
+++ b/daemons/cmirrord/functions.h
@ -12,8 +12,7 @@
 #ifndef _LVM_CLOG_FUNCTIONS_H
 #define _LVM_CLOG_FUNCTIONS_H

-#include "libdm/libdevmapper.h"
-#include "libdm/misc/dm-log-userspace.h"
+#include "device_mapper/misc/dm-log-userspace.h"
 #include "cluster.h"

 #define LOG_RESUMED   1
--- a/daemons/dmeventd/Makefile.in
+++ b/daemons/dmeventd/Makefile.in
@ -14,21 +14,11 @@
 srcdir = @srcdir@
 top_srcdir = @top_srcdir@
 top_builddir = @top_builddir@
-abs_srcdir = @abs_srcdir@

 SOURCES = libdevmapper-event.c
 SOURCES2 = dmeventd.c

 TARGETS = dmeventd
-CFLOW_SOURCES = $(addprefix $(srcdir)/, $(SOURCES) $(SOURCES2) \
-	plugins/lvm2/dmeventd_lvm.c \
-	plugins/mirror/dmeventd_mirror.c \
-	plugins/raid/dmeventd_raid.c \
-	plugins/snapshot/dmeventd_snapshot.c \
-	plugins/thin/dmeventd_thin.c \
-	plugins/vdo/dmeventd_vdo.c \
-	)
-CFLOW_TARGET := $(TARGETS)

 .PHONY: install_lib_dynamic install_lib_static install_include \
 	install_pkgconfig install_dmeventd_dynamic install_dmeventd_static \
@ -47,7 +37,6 @@ endif

 LIB_VERSION = $(LIB_VERSION_DM)
 LIB_SHARED = $(LIB_NAME).$(LIB_SUFFIX)
-LIBS = $(PTHREAD_LIBS) -L$(interfacebuilddir) -ldevmapper

 CLEAN_TARGETS = dmeventd.static $(LIB_NAME).a

@ -57,6 +46,7 @@ endif

 CFLOW_LIST = $(SOURCES)
 CFLOW_LIST_TARGET = $(LIB_NAME).cflow
+CFLOW_TARGET = dmeventd

 EXPORTED_HEADER = $(srcdir)/libdevmapper-event.h
 EXPORTED_FN_PREFIX = dm_event
@ -65,26 +55,34 @@ include $(top_builddir)/make.tmpl

 all: device-mapper
 device-mapper: $(TARGETS)
-plugins.device-mapper: $(LIB_SHARED)

 CFLAGS_dmeventd.o += $(EXTRA_EXEC_CFLAGS)
+LIBS += $(PTHREAD_LIBS) -L$(top_builddir)/libdm -ldevmapper

 dmeventd: $(LIB_SHARED) dmeventd.o
 	@echo "    [CC] $@"
-	$(Q) $(CC) $(CFLAGS) $(LDFLAGS) $(EXTRA_EXEC_LDFLAGS) $(ELDFLAGS) dmeventd.o \
-		-o $@ $(DL_LIBS) $(DMEVENT_LIBS) $(LIBS)
+	$(Q) $(CC) $(CFLAGS) -L. $(LDFLAGS) $(EXTRA_EXEC_LDFLAGS) $(ELDFLAGS) dmeventd.o \
+		-o $@ $(DL_LIBS) $(DMEVENT_LIBS) $(LIBS) -lm

 dmeventd.static: $(LIB_STATIC) dmeventd.o
 	@echo "    [CC] $@"
-	$(Q) $(CC) $(CFLAGS) $(LDFLAGS) -static dmeventd.o \
+	$(Q) $(CC) $(CFLAGS) $(LDFLAGS) -static -L. -L$(interfacebuilddir) dmeventd.o \
 		-o $@ $(DL_LIBS) $(DMEVENT_LIBS) $(LIBS) $(STATIC_LIBS)

 ifeq ("@PKGCONFIG@", "yes")
  INSTALL_LIB_TARGETS += install_pkgconfig
 endif

+ifneq ("$(CFLOW_CMD)", "")
+CFLOW_SOURCES = $(addprefix $(srcdir)/, $(SOURCES))
+-include $(top_builddir)/lib/liblvm-internal.cflow
+-include $(top_builddir)/lib/liblvm2cmd.cflow
+-include $(top_builddir)/daemons/dmeventd/$(LIB_NAME).cflow
+-include $(top_builddir)/daemons/dmeventd/plugins/mirror/$(LIB_NAME)-lvm2mirror.cflow
+endif
+
 install_include: $(srcdir)/libdevmapper-event.h
-	@echo "    [INSTALL] $(<F)"
+	@echo "    [INSTALL] $<"
 	$(Q) $(INSTALL_DATA) -D $< $(includedir)/$(<F)

 install_pkgconfig: libdevmapper-event.pc
--- a/daemons/dmeventd/dmeventd.c
+++ b/daemons/dmeventd/dmeventd.c
@ -678,9 +678,6 @@ static int _get_status(struct message_data *message_data)
 	char **buffers;
 	char *message;

-	if (!message_data->id)
-		return -EINVAL;
-
 	_lock_mutex();
 	count = dm_list_size(&_thread_registry);
 	buffers = alloca(sizeof(char*) * count);
@ -755,7 +752,7 @@ static void _exit_timeout(void *unused __attribute__((unused)))
 static void *_timeout_thread(void *unused __attribute__((unused)))
 {
 	struct thread_status *thread;
-	struct timespec timeout, real_time;
+	struct timespec timeout;
 	time_t curr_time;
 	int ret;

@ -766,16 +763,7 @@ static void *_timeout_thread(void *unused __attribute__((unused)))
 	while (!dm_list_empty(&_timeout_registry)) {
 		timeout.tv_sec = 0;
 		timeout.tv_nsec = 0;
-#ifndef HAVE_REALTIME
 		curr_time = time(NULL);
-#else
-		if (clock_gettime(CLOCK_REALTIME, &real_time)) {
-			log_error("Failed to read clock_gettime().");
-			break;
-		}
-		/* 10ms back to the future */
-		curr_time = real_time.tv_sec + ((real_time.tv_nsec > (1000000000 - 10000000)) ? 1 : 0);
-#endif

 		dm_list_iterate_items_gen(thread, &_timeout_registry, timeout_list) {
 			if (thread->next_time <= curr_time) {
@ -1075,7 +1063,6 @@ out:
 	 * "label at end of compound statement" */
 	;

-	/* coverity[lock_order] _global_mutex is kept locked */
 	pthread_cleanup_pop(1);

 	return NULL;
@ -1498,34 +1485,37 @@ static int _client_read(struct dm_event_fifos *fifos,
 		t.tv_usec = 0;
 		ret = select(fifos->client + 1, &fds, NULL, NULL, &t);

-		if (!ret && bytes)
-			continue; /* trying to finish read */
+		if (!ret && !bytes)	/* nothing to read */
+			return 0;

-		if (ret <= 0)	/* nothing to read */
-			goto bad;
+		if (!ret)	/* trying to finish read */
+			continue;
+
+		if (ret < 0)	/* error */
+			return 0;

 		ret = read(fifos->client, buf + bytes, size - bytes);
 		bytes += ret > 0 ? ret : 0;
-		if (!msg->data && (bytes == 2 * sizeof(uint32_t))) {
+		if (header && (bytes == 2 * sizeof(uint32_t))) {
 			msg->cmd = ntohl(header[0]);
+			size = msg->size = ntohl(header[1]);
 			bytes = 0;
-
-			if (!(size = msg->size = ntohl(header[1])))
-				break;
-
-			if (!(buf = msg->data = malloc(msg->size)))
-				goto bad;
+			if (!size)
+				break; /* No data -> error */
+			buf = msg->data = malloc(msg->size);
+			if (!buf)
+				break; /* No mem -> error */
+			header = 0;
 		}
 	}

-	if (bytes == size)
-		return 1;
+	if (bytes != size) {
+		free(msg->data);
+		msg->data = NULL;
+		return 0;
+	}

-bad:
-	free(msg->data);
-	msg->data = NULL;
-
-	return 0;
+	return 1;
 }

 /*
@ -1746,8 +1736,7 @@ static void _init_thread_signals(void)
 	sigset_t my_sigset;
 	struct sigaction act = { .sa_handler = _sig_alarm };

-	if (sigaction(SIGALRM, &act, NULL))
-		log_sys_debug("sigaction", "SIGLARM");
+	sigaction(SIGALRM, &act, NULL);
 	sigfillset(&my_sigset);

 	/* These are used for exiting */
@ -1756,8 +1745,7 @@ static void _init_thread_signals(void)
 	sigdelset(&my_sigset, SIGHUP);
 	sigdelset(&my_sigset, SIGQUIT);

-	if (pthread_sigmask(SIG_BLOCK, &my_sigset, NULL))
-		log_sys_error("pthread_sigmask", "SIG_BLOCK");
+	pthread_sigmask(SIG_BLOCK, &my_sigset, NULL);
 }

 /*
@ -2033,8 +2021,8 @@ static int _reinstate_registrations(struct dm_event_fifos *fifos)
 static void _restart_dmeventd(void)
 {
 	struct dm_event_fifos fifos = {
-		.client = -1,
 		.server = -1,
+		.client = -1,
 		/* FIXME Make these either configurable or depend directly on dmeventd_path */
 		.client_path = DM_EVENT_FIFO_CLIENT,
 		.server_path = DM_EVENT_FIFO_SERVER
@ -2073,7 +2061,7 @@ static void _restart_dmeventd(void)
 			++count;
 		}

-	if (!(_initial_registrations = zalloc(sizeof(char*) * (count + 1)))) {
+	if (!(_initial_registrations = malloc(sizeof(char*) * (count + 1)))) {
 		fprintf(stderr, "Memory allocation registration failed.\n");
 		goto bad;
 	}
@ -2085,6 +2073,7 @@ static void _restart_dmeventd(void)
 		}
 		message += strlen(message) + 1;
 	}
+	_initial_registrations[count] = NULL;

 	if (version >= 2) {
 		if (daemon_talk(&fifos, &msg, DM_EVENT_CMD_GET_PARAMETERS, "-", "-", 0, 0)) {
@ -2247,8 +2236,7 @@ int main(int argc, char *argv[])

 	_init_thread_signals();

-	if (pthread_mutex_init(&_global_mutex, NULL))
-		exit(EXIT_FAILURE);
+	pthread_mutex_init(&_global_mutex, NULL);

 	if (!_systemd_activation && !_open_fifos(&fifos))
 		exit(EXIT_FIFO_FAILURE);
--- a/daemons/dmeventd/libdevmapper-event.c
+++ b/daemons/dmeventd/libdevmapper-event.c
@ -237,16 +237,16 @@ static int _daemon_read(struct dm_event_fifos *fifos,
 			ret = select(fifos->server + 1, &fds, NULL, NULL, &tval);
 			if (ret < 0 && errno != EINTR) {
 				log_error("Unable to read from event server.");
-				goto bad;
+				return 0;
 			}
 			if ((ret == 0) && (i > 4) && !bytes) {
 				log_error("No input from event server.");
-				goto bad;
+				return 0;
 			}
 		}
 		if (ret < 1) {
 			log_error("Unable to read from event server.");
-			goto bad;
+			return 0;
 		}

 		ret = read(fifos->server, buf + bytes, size);
@ -255,32 +255,25 @@ static int _daemon_read(struct dm_event_fifos *fifos,
 				continue;

 			log_error("Unable to read from event server.");
-			goto bad;
+			return 0;
 		}

 		bytes += ret;
-		if (!msg->data && (bytes == 2 * sizeof(uint32_t))) {
+		if (header && (bytes == 2 * sizeof(uint32_t))) {
 			msg->cmd = ntohl(header[0]);
+			msg->size = ntohl(header[1]);
+			buf = msg->data = malloc(msg->size);
+			size = msg->size;
 			bytes = 0;
-
-			if (!(size = msg->size = ntohl(header[1])))
-				break;
-
-			if (!(buf = msg->data = malloc(msg->size))) {
-				log_error("Unable to allocate message data.");
-				return 0;
-			}
+			header = 0;
 		}
 	}

-	if (bytes == size)
-		return 1;
-
-bad:
-	free(msg->data);
-	msg->data = NULL;
-
-	return 0;
+	if (bytes != size) {
+		free(msg->data);
+		msg->data = NULL;
+	}
+	return bytes == size;
 }

 /* Write message to daemon. */
@ -615,8 +608,8 @@ static int _do_event(int cmd, char *dmeventd_path, struct dm_event_daemon_messag
 {
 	int ret;
 	struct dm_event_fifos fifos = {
-		.client = -1,
 		.server = -1,
+		.client = -1,
 		/* FIXME Make these either configurable or depend directly on dmeventd_path */
 		.client_path = DM_EVENT_FIFO_CLIENT,
 		.server_path = DM_EVENT_FIFO_SERVER
@ -709,11 +702,15 @@ int dm_event_unregister_handler(const struct dm_event_handler *dmevh)
 static char *_fetch_string(char **src, const int delimiter)
 {
 	char *p, *ret;
-	size_t len = (p = strchr(*src, delimiter)) ?
-		(size_t)(p - *src) : strlen(*src);

-	if ((ret = strndup(*src, len)))
-		*src += len + 1;
+	if ((p = strchr(*src, delimiter)))
+		*p = 0;
+
+	if ((ret = strdup(*src)))
+		*src += strlen(ret) + 1;
+
+	if (p)
+		*p = delimiter;

 	return ret;
 }
--- a/daemons/dmeventd/plugins/lvm2/dmeventd_lvm.c
+++ b/daemons/dmeventd/plugins/lvm2/dmeventd_lvm.c
@ -71,7 +71,7 @@ int dmeventd_lvm2_init(void)
 	if (!_lvm_handle) {
 		lvm2_log_fn(_lvm2_print_log);

-		if (!(_lvm_handle = lvm2_init_threaded()))
+		if (!(_lvm_handle = lvm2_init()))
 			goto out;

 		/*
--- a/daemons/dmeventd/plugins/mirror/Makefile.in
+++ b/daemons/dmeventd/plugins/mirror/Makefile.in
@ -25,6 +25,9 @@ LIB_NAME = libdevmapper-event-lvm2mirror
 LIB_SHARED = $(LIB_NAME).$(LIB_SUFFIX)
 LIB_VERSION = $(LIB_VERSION_LVM)

+CFLOW_LIST = $(SOURCES)
+CFLOW_LIST_TARGET = $(LIB_NAME).cflow
+
 include $(top_builddir)/make.tmpl

 install_lvm2: install_dm_plugin
--- a/daemons/dmeventd/plugins/raid/Makefile.in
+++ b/daemons/dmeventd/plugins/raid/Makefile.in
@ -24,6 +24,9 @@ LIB_NAME = libdevmapper-event-lvm2raid
 LIB_SHARED = $(LIB_NAME).$(LIB_SUFFIX)
 LIB_VERSION = $(LIB_VERSION_LVM)

+CFLOW_LIST = $(SOURCES)
+CFLOW_LIST_TARGET = $(LIB_NAME).cflow
+
 include $(top_builddir)/make.tmpl

 install_lvm2: install_dm_plugin
--- a/daemons/dmeventd/plugins/raid/dmeventd_raid.c
+++ b/daemons/dmeventd/plugins/raid/dmeventd_raid.c
@ -76,17 +76,14 @@ static int _process_raid_event(struct dso_state *state, char *params, const char
 	}

 	if (dead) {
-		/*
-		 * Use the first event to run a repair ignoring any additional ones.
-		 *
-		 * We presume lvconvert to do pre-repair
-		 * checks to avoid bloat in this plugin.
-		 */
-		if (!state->warned && status->insync_regions < status->total_regions) {
-			state->warned = 1;
-			log_warn("WARNING: waiting for resynchronization to finish "
-				 "before initiating repair on RAID device %s.", device);
-			/* Fall through to allow lvconvert to run. */
+		if (status->insync_regions < status->total_regions) {
+			if (!state->warned) {
+				state->warned = 1;
+				log_warn("WARNING: waiting for resynchronization to finish "
+					 "before initiating repair on RAID device %s.", device);
+			}
+
+			goto out; /* Not yet done syncing with accessible devices */
 		}

 		if (state->failed)
--- a/daemons/dmeventd/plugins/thin/Makefile.in
+++ b/daemons/dmeventd/plugins/thin/Makefile.in
@ -24,6 +24,9 @@ LIB_NAME = libdevmapper-event-lvm2thin
 LIB_SHARED = $(LIB_NAME).$(LIB_SUFFIX)
 LIB_VERSION = $(LIB_VERSION_LVM)

+CFLOW_LIST = $(SOURCES)
+CFLOW_LIST_TARGET = $(LIB_NAME).cflow
+
 include $(top_builddir)/make.tmpl

 install_lvm2: install_dm_plugin
--- a/daemons/dmeventd/plugins/vdo/Makefile.in
+++ b/daemons/dmeventd/plugins/vdo/Makefile.in
@ -24,6 +24,9 @@ LIB_NAME = libdevmapper-event-lvm2vdo
 LIB_SHARED = $(LIB_NAME).$(LIB_SUFFIX)
 LIB_VERSION = $(LIB_VERSION_LVM)

+CFLOW_LIST = $(SOURCES)
+CFLOW_LIST_TARGET = $(LIB_NAME).cflow
+
 include $(top_builddir)/make.tmpl

 install_lvm2: install_dm_plugin
--- a/daemons/dmeventd/plugins/vdo/dmeventd_vdo.c
+++ b/daemons/dmeventd/plugins/vdo/dmeventd_vdo.c
@ -16,13 +16,7 @@
 #include "daemons/dmeventd/plugins/lvm2/dmeventd_lvm.h"
 #include "daemons/dmeventd/libdevmapper-event.h"

-/*
- * Use parser from new device_mapper library.
- * Although during compilation we can see dm_vdo_status_parse()
- * in runtime we are linked agains systems libdm 'older' library
- * which does not provide this symbol and plugin fails to load
- */
-/* coverity[unnecessary_header] used for parsing */
+/* Use parser from new device_mapper library */
 #include "device_mapper/vdo/status.c"

 #include <sys/wait.h>
--- a/daemons/lvmdbusd/Makefile.in
+++ b/daemons/lvmdbusd/Makefile.in
@ -15,8 +15,7 @@ srcdir = @srcdir@
 top_srcdir = @top_srcdir@
 top_builddir = @top_builddir@

-lvmdbuspydir = $(python3dir)/lvmdbusd
-lvmdbusdir = $(DESTDIR)$(lvmdbuspydir)
+lvmdbusdir = $(python3dir)/lvmdbusd

 LVMDBUS_SRCDIR_FILES = \
 	automatedproperties.py \
@ -54,16 +53,16 @@ include $(top_builddir)/make.tmpl
 all:
 	$(Q) test -x $(LVMDBUSD) || chmod 755 $(LVMDBUSD)

-install_lvmdbusd: $(LVMDBUSD)
+install_lvmdbusd:
 	@echo "    [INSTALL] $<"
 	$(Q) $(INSTALL_DIR) $(sbindir)
 	$(Q) $(INSTALL_SCRIPT) $(LVMDBUSD) $(sbindir)
-	$(Q) $(INSTALL_DIR) $(lvmdbusdir)
-	$(Q) (cd $(srcdir); $(INSTALL_DATA) $(LVMDBUS_SRCDIR_FILES) $(lvmdbusdir))
-	$(Q) $(INSTALL_DATA) $(LVMDBUS_BUILDDIR_FILES) $(lvmdbusdir)
-	$(Q) PYTHON=$(PYTHON3) $(PYCOMPILE) --destdir "$(DESTDIR)" --basedir "$(lvmdbuspydir)" $(LVMDBUS_SRCDIR_FILES) $(LVMDBUS_BUILDDIR_FILES)
-	$(Q) $(CHMOD) 755 $(lvmdbusdir)/__pycache__
-	$(Q) $(CHMOD) 444 $(lvmdbusdir)/__pycache__/*.py[co]
+	$(Q) $(INSTALL_DIR) $(DESTDIR)$(lvmdbusdir)
+	$(Q) (cd $(srcdir); $(INSTALL_DATA) $(LVMDBUS_SRCDIR_FILES) $(DESTDIR)$(lvmdbusdir))
+	$(Q) $(INSTALL_DATA) $(LVMDBUS_BUILDDIR_FILES) $(DESTDIR)$(lvmdbusdir)
+	$(Q) PYTHON=$(PYTHON3) $(PYCOMPILE) --destdir "$(DESTDIR)" --basedir "$(lvmdbusdir)" $(LVMDBUS_SRCDIR_FILES) $(LVMDBUS_BUILDDIR_FILES)
+	$(Q) $(CHMOD) 755 $(DESTDIR)$(lvmdbusdir)/__pycache__
+	$(Q) $(CHMOD) 444 $(DESTDIR)$(lvmdbusdir)/__pycache__/*.py[co]

 install_lvm2: install_lvmdbusd

--- a/daemons/lvmdbusd/automatedproperties.py
+++ b/daemons/lvmdbusd/automatedproperties.py
@ -157,15 +157,14 @@ class AutomatedProperties(dbus.service.Object):
 		if not self._ap_search_method:
 			return 0

+		search = self.lvm_id
+		if search_key:
+			search = search_key
+
 		# Either we have the new object state or we need to go fetch it
 		if object_state:
 			new_state = object_state
 		else:
-			if search_key:
-				search = search_key
-			else:
-				search = self.lvm_id
-
 			new_state = self._ap_search_method([search])[0]
 			assert isinstance(new_state, State)

--- a/daemons/lvmdbusd/background.py
+++ b/daemons/lvmdbusd/background.py
@ -9,14 +9,13 @@

 import subprocess
 from . import cfg
-from .cmdhandler import options_to_cli_args, LvmExecutionMeta, call_lvm
+from .cmdhandler import options_to_cli_args, LvmExecutionMeta
 import dbus
 from .utils import pv_range_append, pv_dest_ranges, log_error, log_debug,\
-					mt_async_call
-from .request import RequestEntry
+	add_no_notify
+import os
 import threading
 import time
-import traceback


 def pv_move_lv_cmd(move_options, lv_full_name,
@ -40,50 +39,58 @@ def lv_merge_cmd(merge_options, lv_full_name):
 	return cmd


-def _load_wrapper(ignored):
-	cfg.load()
-
-
-def _move_callback(job_state, line_str):
-	try:
-		if line_str.count(':') == 2:
-			(device, ignore, percentage) = line_str.split(':')
-
-			job_state.Percent = int(round(
-				float(percentage.strip()[:-1]), 1))
-
-			# While the move is in progress we need to periodically update
-			# the state to reflect where everything is at.  we will do this
-			# by scheduling the load to occur in the main work queue.
-			r = RequestEntry(
-				-1, _load_wrapper, ("_move_callback: load",), None, None, False)
-			cfg.worker_q.put(r)
-	except ValueError:
-		log_error("Trying to parse percentage which failed for %s" % line_str)
-
-
 def _move_merge(interface_name, command, job_state):
 	# We need to execute these command stand alone by forking & exec'ing
 	# the command always as we will be getting periodic output from them on
 	# the status of the long running operation.
+	command.insert(0, cfg.LVM_CMD)

+	# Instruct lvm to not register an event with us
+	command = add_no_notify(command)
+
+	#(self, start, ended, cmd, ec, stdout_txt, stderr_txt)
 	meta = LvmExecutionMeta(time.time(), 0, command, -1000, None, None)
+
 	cfg.blackbox.add(meta)

-	ec, stdout, stderr = call_lvm(command, line_cb=_move_callback,
-									cb_data=job_state)
+	process = subprocess.Popen(command, stdout=subprocess.PIPE,
+								env=os.environ,
+								stderr=subprocess.PIPE, close_fds=True)
+
+	log_debug("Background process for %s is %d" %
+				(str(command), process.pid))
+
+	lines_iterator = iter(process.stdout.readline, b"")
+	for line in lines_iterator:
+		line_str = line.decode("utf-8")
+
+		# Check to see if the line has the correct number of separators
+		try:
+			if line_str.count(':') == 2:
+				(device, ignore, percentage) = line_str.split(':')
+				job_state.Percent = round(
+					float(percentage.strip()[:-1]), 1)
+
+				# While the move is in progress we need to periodically update
+				# the state to reflect where everything is at.
+				cfg.load()
+		except ValueError:
+			log_error("Trying to parse percentage which failed for %s" %
+				line_str)
+
+	out = process.communicate()

 	with meta.lock:
 		meta.ended = time.time()
-		meta.ec = ec
-		meta.stderr_txt = stderr
+		meta.ec = process.returncode
+		meta.stderr_txt = out[1]

-	if ec == 0:
+	if process.returncode == 0:
 		job_state.Percent = 100
 	else:
 		raise dbus.exceptions.DBusException(
 			interface_name,
-			'Exit code %s, stderr = %s' % (str(ec), stderr))
+			'Exit code %s, stderr = %s' % (str(process.returncode), out[1]))

 	cfg.load()
 	return '/'
--- a/daemons/lvmdbusd/cfg.py
+++ b/daemons/lvmdbusd/cfg.py
@ -47,11 +47,9 @@ BUS_NAME = os.getenv('LVM_DBUS_NAME', 'com.redhat.lvmdbus1')
 BASE_INTERFACE = 'com.redhat.lvmdbus1'
 PV_INTERFACE = BASE_INTERFACE + '.Pv'
 VG_INTERFACE = BASE_INTERFACE + '.Vg'
-VG_VDO_INTERFACE = BASE_INTERFACE + '.VgVdo'
 LV_INTERFACE = BASE_INTERFACE + '.Lv'
 LV_COMMON_INTERFACE = BASE_INTERFACE + '.LvCommon'
 THIN_POOL_INTERFACE = BASE_INTERFACE + '.ThinPool'
-VDO_POOL_INTERFACE = BASE_INTERFACE + '.VdoPool'
 CACHE_POOL_INTERFACE = BASE_INTERFACE + '.CachePool'
 LV_CACHED = BASE_INTERFACE + '.CachedLv'
 SNAPSHOT_INTERFACE = BASE_INTERFACE + '.Snapshot'
@ -63,7 +61,6 @@ PV_OBJ_PATH = BASE_OBJ_PATH + '/Pv'
 VG_OBJ_PATH = BASE_OBJ_PATH + '/Vg'
 LV_OBJ_PATH = BASE_OBJ_PATH + '/Lv'
 THIN_POOL_PATH = BASE_OBJ_PATH + "/ThinPool"
-VDO_POOL_PATH = BASE_OBJ_PATH + "/VdoPool"
 CACHE_POOL_PATH = BASE_OBJ_PATH + "/CachePool"
 HIDDEN_LV_PATH = BASE_OBJ_PATH + "/HiddenLv"
 MANAGER_OBJ_PATH = BASE_OBJ_PATH + '/Manager'
@ -74,7 +71,6 @@ pv_id = itertools.count()
 vg_id = itertools.count()
 lv_id = itertools.count()
 thin_id = itertools.count()
-vdo_id = itertools.count()
 cache_pool_id = itertools.count()
 job_id = itertools.count()
 hidden_lv = itertools.count()
@ -83,9 +79,6 @@ hidden_lv = itertools.count()
 load = None
 event = None

-# Boolean to denote if lvm supports VDO integration
-vdo_support = False
-
 # Global cached state
 db = None

--- a/daemons/lvmdbusd/cmdhandler.py
+++ b/daemons/lvmdbusd/cmdhandler.py
@ -8,7 +8,6 @@
 # along with this program. If not, see <http://www.gnu.org/licenses/>.

 from subprocess import Popen, PIPE
-import select
 import time
 import threading
 from itertools import chain
@ -17,8 +16,7 @@ import traceback
 import os

 from lvmdbusd import cfg
-from lvmdbusd.utils import pv_dest_ranges, log_debug, log_error, add_no_notify,\
-							make_non_block, read_decoded
+from lvmdbusd.utils import pv_dest_ranges, log_debug, log_error, add_no_notify
 from lvmdbusd.lvm_shell_proxy import LVMShellProxy

 try:
@ -84,23 +82,16 @@ def _debug_c(cmd, exit_code, out):
 	log_error(("STDERR=\n %s\n" % out[1]))


-def call_lvm(command, debug=False, line_cb=None,
-			 cb_data=None):
+def call_lvm(command, debug=False):
 	"""
 	Call an executable and return a tuple of exitcode, stdout, stderr
-	:param command: Command to execute
-	:param debug:   Dump debug to stdout
-	:param line_cb:	Call the supplied function for each line read from
-					stdin, CALL MUST EXECUTE QUICKLY and not *block*
-					otherwise call_lvm function will fail to read
-					stdin/stdout.  Return value of call back is ignored
-	:param cb_data: Supplied to callback to allow caller access to
-								its own data
-
-	# Callback signature
-	def my_callback(my_context, line_read_stdin)
-		pass
+	:param command:     Command to execute
+	:param debug:       Dump debug to stdout
 	"""
+	# print 'STACK:'
+	# for line in traceback.format_stack():
+	#    print line.strip()
+
 	# Prepend the full lvm executable so that we can run different versions
 	# in different locations on the same box
 	command.insert(0, cfg.LVM_CMD)
@ -108,44 +99,10 @@ def call_lvm(command, debug=False, line_cb=None,

 	process = Popen(command, stdout=PIPE, stderr=PIPE, close_fds=True,
 					env=os.environ)
+	out = process.communicate()

-	stdout_text = ""
-	stderr_text = ""
-	stdout_index = 0
-	make_non_block(process.stdout)
-	make_non_block(process.stderr)
-
-	while True:
-		try:
-			rd_fd = [process.stdout.fileno(), process.stderr.fileno()]
-			ready = select.select(rd_fd, [], [], 2)
-
-			for r in ready[0]:
-				if r == process.stdout.fileno():
-					stdout_text += read_decoded(process.stdout)
-				elif r == process.stderr.fileno():
-					stderr_text += read_decoded(process.stderr)
-
-			if line_cb is not None:
-				# Process the callback for each line read!
-				while True:
-					i = stdout_text.find("\n", stdout_index)
-					if i != -1:
-						try:
-							line_cb(cb_data, stdout_text[stdout_index:i])
-						except:
-							st = traceback.format_exc()
-							log_error("call_lvm: line_cb exception: \n %s" % st)
-						stdout_index = i + 1
-					else:
-						break
-
-			# Check to see if process has terminated, None when running
-			if process.poll() is not None:
-				break
-		except IOError as ioe:
-			log_debug("call_lvm:" + str(ioe))
-			pass
+	stdout_text = bytes(out[0]).decode("utf-8")
+	stderr_text = bytes(out[1]).decode("utf-8")

 	if debug or process.returncode != 0:
 		_debug_c(command, process.returncode, (stdout_text, stderr_text))
@ -260,10 +217,7 @@ def options_to_cli_args(options):
 		else:
 			rc.append("--%s" % k)
 		if v != "":
-			if isinstance(v, int):
-				rc.append(str(int(v)))
-			else:
-				rc.append(str(v))
+			rc.append(str(v))
 	return rc


@ -326,7 +280,7 @@ def vg_remove(vg_name, remove_options):
 def vg_lv_create(vg_name, create_options, name, size_bytes, pv_dests):
 	cmd = ['lvcreate']
 	cmd.extend(options_to_cli_args(create_options))
-	cmd.extend(['--size', '%dB' % size_bytes])
+	cmd.extend(['--size', str(size_bytes) + 'B'])
 	cmd.extend(['--name', name, vg_name, '--yes'])
 	pv_dest_ranges(cmd, pv_dests)
 	return call(cmd)
@ -338,7 +292,7 @@ def vg_lv_snapshot(vg_name, snapshot_options, name, size_bytes):
 	cmd.extend(["-s"])

 	if size_bytes != 0:
-		cmd.extend(['--size', '%dB' % size_bytes])
+		cmd.extend(['--size', str(size_bytes) + 'B'])

 	cmd.extend(['--name', name, vg_name])
 	return call(cmd)
@ -349,9 +303,9 @@ def _vg_lv_create_common_cmd(create_options, size_bytes, thin_pool):
 	cmd.extend(options_to_cli_args(create_options))

 	if not thin_pool:
-		cmd.extend(['--size', '%dB' % size_bytes])
+		cmd.extend(['--size', str(size_bytes) + 'B'])
 	else:
-		cmd.extend(['--thin', '--size', '%dB' % size_bytes])
+		cmd.extend(['--thin', '--size', str(size_bytes) + 'B'])

 	cmd.extend(['--yes'])
 	return cmd
@ -366,10 +320,10 @@ def vg_lv_create_linear(vg_name, create_options, name, size_bytes, thin_pool):
 def vg_lv_create_striped(vg_name, create_options, name, size_bytes,
 							num_stripes, stripe_size_kb, thin_pool):
 	cmd = _vg_lv_create_common_cmd(create_options, size_bytes, thin_pool)
-	cmd.extend(['--stripes', str(int(num_stripes))])
+	cmd.extend(['--stripes', str(num_stripes)])

 	if stripe_size_kb != 0:
-		cmd.extend(['--stripesize', str(int(stripe_size_kb))])
+		cmd.extend(['--stripesize', str(stripe_size_kb)])

 	cmd.extend(['--name', name, vg_name])
 	return call(cmd)
@ -382,13 +336,13 @@ def _vg_lv_create_raid(vg_name, create_options, name, raid_type, size_bytes,
 	cmd.extend(options_to_cli_args(create_options))

 	cmd.extend(['--type', raid_type])
-	cmd.extend(['--size', '%dB' % size_bytes])
+	cmd.extend(['--size', str(size_bytes) + 'B'])

 	if num_stripes != 0:
-		cmd.extend(['--stripes', str(int(num_stripes))])
+		cmd.extend(['--stripes', str(num_stripes)])

 	if stripe_size_kb != 0:
-		cmd.extend(['--stripesize', str(int(stripe_size_kb))])
+		cmd.extend(['--stripesize', str(stripe_size_kb)])

 	cmd.extend(['--name', name, vg_name, '--yes'])
 	return call(cmd)
@ -409,8 +363,8 @@ def vg_lv_create_mirror(
 	cmd.extend(options_to_cli_args(create_options))

 	cmd.extend(['--type', 'mirror'])
-	cmd.extend(['--mirrors', str(int(num_copies))])
-	cmd.extend(['--size', '%dB' % size_bytes])
+	cmd.extend(['--mirrors', str(num_copies)])
+	cmd.extend(['--size', str(size_bytes) + 'B'])
 	cmd.extend(['--name', name, vg_name, '--yes'])
 	return call(cmd)

@ -431,24 +385,6 @@ def vg_create_thin_pool(md_full_name, data_full_name, create_options):
 	return call(cmd)


-def vg_create_vdo_pool_lv_and_lv(vg_name, pool_name, lv_name, data_size,
-									virtual_size, create_options):
-	cmd = ['lvcreate']
-	cmd.extend(options_to_cli_args(create_options))
-	cmd.extend(['-y', '--type', 'vdo', '-n', lv_name,
-				'-L', '%dB' % data_size, '-V', '%dB' % virtual_size,
-				"%s/%s" % (vg_name, pool_name)])
-	return call(cmd)
-
-
-def vg_create_vdo_pool(pool_full_name, lv_name, virtual_size, create_options):
-	cmd = ['lvconvert']
-	cmd.extend(options_to_cli_args(create_options))
-	cmd.extend(['--type', 'vdo-pool', '-n', lv_name, '--force', '-y',
-				'-V', '%dB' % virtual_size, pool_full_name])
-	return call(cmd)
-
-
 def lv_remove(lv_path, remove_options):
 	cmd = ['lvremove']
 	cmd.extend(options_to_cli_args(remove_options))
@ -482,7 +418,7 @@ def lv_resize(lv_full_name, size_change, pv_dests,
 def lv_lv_create(lv_full_name, create_options, name, size_bytes):
 	cmd = ['lvcreate']
 	cmd.extend(options_to_cli_args(create_options))
-	cmd.extend(['--virtualsize', '%dB' % size_bytes, '-T'])
+	cmd.extend(['--virtualsize', str(size_bytes) + 'B', '-T'])
 	cmd.extend(['--name', name, lv_full_name, '--yes'])
 	return call(cmd)

@ -496,15 +432,6 @@ def lv_cache_lv(cache_pool_full_name, lv_full_name, cache_options):
 	return call(cmd)


-def lv_writecache_lv(cache_lv_full_name, lv_full_name, cache_options):
-	# lvconvert --type writecache --cachevol VG/CacheLV VG/OriginLV
-	cmd = ['lvconvert']
-	cmd.extend(options_to_cli_args(cache_options))
-	cmd.extend(['-y', '--type', 'writecache', '--cachevol',
-				cache_lv_full_name, lv_full_name])
-	return call(cmd)
-
-
 def lv_detach_cache(lv_full_name, detach_options, destroy_cache):
 	cmd = ['lvconvert']
 	if destroy_cache:
@ -520,28 +447,6 @@ def lv_detach_cache(lv_full_name, detach_options, destroy_cache):
 	return call(cmd)


-def lv_vdo_compression(lv_path, enable, comp_options):
-	cmd = ['lvchange', '--compression']
-	if enable:
-		cmd.append('y')
-	else:
-		cmd.append('n')
-	cmd.extend(options_to_cli_args(comp_options))
-	cmd.append(lv_path)
-	return call(cmd)
-
-
-def lv_vdo_deduplication(lv_path, enable, dedup_options):
-	cmd = ['lvchange', '--deduplication']
-	if enable:
-		cmd.append('y')
-	else:
-		cmd.append('n')
-	cmd.extend(options_to_cli_args(dedup_options))
-	cmd.append(lv_path)
-	return call(cmd)
-
-
 def supports_json():
 	cmd = ['help']
 	rc, out, err = call(cmd)
@ -554,16 +459,6 @@ def supports_json():
 	return False


-def supports_vdo():
-	cmd = ['segtypes']
-	rc, out, err = call(cmd)
-	if rc == 0:
-		if "vdo" in out:
-			log_debug("We have VDO support")
-			return True
-	return False
-
-
 def lvm_full_report_json():
 	pv_columns = ['pv_name', 'pv_uuid', 'pv_fmt', 'pv_size', 'pv_free',
 					'pv_used', 'dev_size', 'pv_mda_size', 'pv_mda_free',
@ -591,22 +486,6 @@ def lvm_full_report_json():

 	lv_seg_columns = ['seg_pe_ranges', 'segtype', 'lv_uuid']

-	if cfg.vdo_support:
-		lv_columns.extend(
-			['vdo_operating_mode', 'vdo_compression_state', 'vdo_index_state',
-				'vdo_used_size', 'vdo_saving_percent']
-		)
-
-		lv_seg_columns.extend(
-			['vdo_compression', 'vdo_deduplication',
-				'vdo_use_metadata_hints', 'vdo_minimum_io_size',
-				'vdo_block_map_cache_size', 'vdo_block_map_era_length',
-				'vdo_use_sparse_index', 'vdo_index_memory_size',
-				'vdo_slab_size', 'vdo_ack_threads', 'vdo_bio_threads',
-				'vdo_bio_rotation', 'vdo_cpu_threads', 'vdo_hash_zone_threads',
-				'vdo_logical_threads', 'vdo_physical_threads',
-				'vdo_max_discard', 'vdo_write_policy', 'vdo_header_size'])
-
 	cmd = _dc('fullreport', [
 		'-a',		# Need hidden too
 		'--configreport', 'pv', '-o', ','.join(pv_columns),
@ -627,13 +506,7 @@ def lvm_full_report_json():
 			assert(type(out) == dict)
 			return out
 		else:
-			try:
-				return json.loads(out)
-			except json.decoder.JSONDecodeError as joe:
-				log_error("JSONDecodeError %s, \n JSON=\n%s\n" %
-							(str(joe), out))
-				raise joe
-
+			return json.loads(out)
 	return None


@ -683,7 +556,7 @@ def pv_resize(device, size_bytes, create_options):
 	cmd.extend(options_to_cli_args(create_options))

 	if size_bytes != 0:
-		cmd.extend(['--yes', '--setphysicalvolumesize', '%dB' % size_bytes])
+		cmd.extend(['--yes', '--setphysicalvolumesize', str(size_bytes) + 'B'])

 	cmd.extend([device])
 	return call(cmd)
@ -779,12 +652,12 @@ def vg_allocation_policy(vg_name, policy, policy_options):


 def vg_max_pv(vg_name, number, max_options):
-	return _vg_value_set(vg_name, ['--maxphysicalvolumes', str(int(number))],
+	return _vg_value_set(vg_name, ['--maxphysicalvolumes', str(number)],
 							max_options)


 def vg_max_lv(vg_name, number, max_options):
-	return _vg_value_set(vg_name, ['-l', str(int(number))], max_options)
+	return _vg_value_set(vg_name, ['-l', str(number)], max_options)


 def vg_uuid_gen(vg_name, ignore, options):
@ -826,7 +699,6 @@ def activate_deactivate(op, name, activate, control_flags, options):
 		op += 'n'

 	cmd.append(op)
-	cmd.append("-y")
 	cmd.append(name)
 	return call(cmd)

--- a/daemons/lvmdbusd/fetch.py
+++ b/daemons/lvmdbusd/fetch.py
@ -20,55 +20,19 @@ import traceback

 def _main_thread_load(refresh=True, emit_signal=True):
 	num_total_changes = 0
-	to_remove = []

-	(changes, remove) = load_pvs(
+	num_total_changes += load_pvs(
 		refresh=refresh,
 		emit_signal=emit_signal,
-		cache_refresh=False)[1:]
-	num_total_changes += changes
-	to_remove.extend(remove)
-
-	(changes, remove) = load_vgs(
+		cache_refresh=False)[1]
+	num_total_changes += load_vgs(
 		refresh=refresh,
 		emit_signal=emit_signal,
-		cache_refresh=False)[1:]
-
-	num_total_changes += changes
-	to_remove.extend(remove)
-
-	(lv_changes, remove) = load_lvs(
+		cache_refresh=False)[1]
+	num_total_changes += load_lvs(
 		refresh=refresh,
 		emit_signal=emit_signal,
-		cache_refresh=False)[1:]
-
-	num_total_changes += lv_changes
-	to_remove.extend(remove)
-
-	# When the LVs change it can cause another change in the VGs which is
-	# missed if we don't scan through the VGs again.  We could achieve this
-	# the other way and re-scan the LVs, but in general there are more LVs than
-	# VGs, thus this should be more efficient.  This happens when a LV interface
-	# changes causing the dbus object representing it to be removed and
-	# recreated.
-	if refresh and lv_changes > 0:
-		(changes, remove) = load_vgs(
-			refresh=refresh,
-			emit_signal=emit_signal,
-			cache_refresh=False)[1:]
-
-	num_total_changes += changes
-	to_remove.extend(remove)
-
-	# Remove any objects that are no longer needed.  We do this after we process
-	# all the objects to ensure that references still exist for objects that
-	# are processed after them.
-	to_remove.reverse()
-	for i in to_remove:
-		dbus_obj = cfg.om.get_object_by_path(i)
-		if dbus_obj:
-			cfg.om.remove_object(dbus_obj, True)
-			num_total_changes += 1
+		cache_refresh=False)[1]

 	return num_total_changes

--- a/daemons/lvmdbusd/loader.py
+++ b/daemons/lvmdbusd/loader.py
@ -75,10 +75,11 @@ def common(retrieve, o_type, search_keys,

 		object_path = None

-	to_remove = []
 	if refresh:
-		to_remove = list(existing_paths.keys())
+		for k in list(existing_paths.keys()):
+			cfg.om.remove_object(cfg.om.get_object_by_path(k), True)
+			num_changes += 1

 	num_changes += len(rc)

-	return rc, num_changes, to_remove
+	return rc, num_changes
--- a/daemons/lvmdbusd/lv.py
+++ b/daemons/lvmdbusd/lv.py
@ -10,14 +10,14 @@
 from .automatedproperties import AutomatedProperties

 from . import utils
-from .utils import vg_obj_path_generate, log_error, _handle_execute
+from .utils import vg_obj_path_generate, log_error
 import dbus
 from . import cmdhandler
 from . import cfg
 from .cfg import LV_INTERFACE, THIN_POOL_INTERFACE, SNAPSHOT_INTERFACE, \
-	LV_COMMON_INTERFACE, CACHE_POOL_INTERFACE, LV_CACHED, VDO_POOL_INTERFACE
+	LV_COMMON_INTERFACE, CACHE_POOL_INTERFACE, LV_CACHED
 from .request import RequestEntry
-from .utils import n, n32, d
+from .utils import n, n32
 from .loader import common
 from .state import State
 from . import background
@ -74,66 +74,23 @@ def lvs_state_retrieve(selection, cache_refresh=True):
 	lvs = sorted(cfg.db.fetch_lvs(selection), key=get_key)

 	for l in lvs:
-		if cfg.vdo_support:
-			rc.append(LvStateVdo(
-				l['lv_uuid'], l['lv_name'],
-				l['lv_path'], n(l['lv_size']),
-				l['vg_name'],
-				l['vg_uuid'], l['pool_lv_uuid'],
-				l['pool_lv'], l['origin_uuid'], l['origin'],
-				n32(l['data_percent']), l['lv_attr'],
-				l['lv_tags'], l['lv_active'], l['data_lv'],
-				l['metadata_lv'], l['segtype'], l['lv_role'],
-				l['lv_layout'],
-				n32(l['snap_percent']),
-				n32(l['metadata_percent']),
-				n32(l['copy_percent']),
-				n32(l['sync_percent']),
-				n(l['lv_metadata_size']),
-				l['move_pv'],
-				l['move_pv_uuid'],
-				l['vdo_operating_mode'],
-				l['vdo_compression_state'],
-				l['vdo_index_state'],
-				n(l['vdo_used_size']),
-				d(l['vdo_saving_percent']),
-				l['vdo_compression'],
-				l['vdo_deduplication'],
-				l['vdo_use_metadata_hints'],
-				n32(l['vdo_minimum_io_size']),
-				n(l['vdo_block_map_cache_size']),
-				n32(l['vdo_block_map_era_length']),
-				l['vdo_use_sparse_index'],
-				n(l['vdo_index_memory_size']),
-				n(l['vdo_slab_size']),
-				n32(l['vdo_ack_threads']),
-				n32(l['vdo_bio_threads']),
-				n32(l['vdo_bio_rotation']),
-				n32(l['vdo_cpu_threads']),
-				n32(l['vdo_hash_zone_threads']),
-				n32(l['vdo_logical_threads']),
-				n32(l['vdo_physical_threads']),
-				n32(l['vdo_max_discard']),
-				l['vdo_write_policy'],
-				n32(l['vdo_header_size'])))
-		else:
-			rc.append(LvState(
-				l['lv_uuid'], l['lv_name'],
-				l['lv_path'], n(l['lv_size']),
-				l['vg_name'],
-				l['vg_uuid'], l['pool_lv_uuid'],
-				l['pool_lv'], l['origin_uuid'], l['origin'],
-				n32(l['data_percent']), l['lv_attr'],
-				l['lv_tags'], l['lv_active'], l['data_lv'],
-				l['metadata_lv'], l['segtype'], l['lv_role'],
-				l['lv_layout'],
-				n32(l['snap_percent']),
-				n32(l['metadata_percent']),
-				n32(l['copy_percent']),
-				n32(l['sync_percent']),
-				n(l['lv_metadata_size']),
-				l['move_pv'],
-				l['move_pv_uuid']))
+		rc.append(LvState(
+			l['lv_uuid'], l['lv_name'],
+			l['lv_path'], n(l['lv_size']),
+			l['vg_name'],
+			l['vg_uuid'], l['pool_lv_uuid'],
+			l['pool_lv'], l['origin_uuid'], l['origin'],
+			n32(l['data_percent']), l['lv_attr'],
+			l['lv_tags'], l['lv_active'], l['data_lv'],
+			l['metadata_lv'], l['segtype'], l['lv_role'],
+			l['lv_layout'],
+			n32(l['snap_percent']),
+			n32(l['metadata_percent']),
+			n32(l['copy_percent']),
+			n32(l['sync_percent']),
+			n(l['lv_metadata_size']),
+			l['move_pv'],
+			l['move_pv_uuid']))
 	return rc


@ -237,8 +194,6 @@ class LvState(State):
 	def _object_type_create(self):
 		if self.Attr[0] == 't':
 			return LvThinPool
-		elif self.Attr[0] == 'd':
-			return LvVdoPool
 		elif self.Attr[0] == 'C':
 			if 'pool' in self.layout:
 				return LvCachePool
@ -265,34 +220,6 @@ class LvState(State):
 		return (klass, path_method)


-class LvStateVdo(LvState):
-
-	def __init__(self, Uuid, Name, Path, SizeBytes,
-					vg_name, vg_uuid, pool_lv_uuid, PoolLv,
-					origin_uuid, OriginLv, DataPercent, Attr, Tags, active,
-					data_lv, metadata_lv, segtypes, role, layout, SnapPercent,
-					MetaDataPercent, CopyPercent, SyncPercent,
-					MetaDataSizeBytes, move_pv, move_pv_uuid,
-					vdo_operating_mode, vdo_compression_state, vdo_index_state,
-					vdo_used_size,vdo_saving_percent,vdo_compression,
-					vdo_deduplication,vdo_use_metadata_hints,
-					vdo_minimum_io_size,vdo_block_map_cache_size,
-					vdo_block_map_era_length,vdo_use_sparse_index,
-					vdo_index_memory_size,vdo_slab_size,vdo_ack_threads,
-					vdo_bio_threads,vdo_bio_rotation,vdo_cpu_threads,
-					vdo_hash_zone_threads,vdo_logical_threads,
-					vdo_physical_threads,vdo_max_discard,
-					vdo_write_policy,vdo_header_size):
-		super(LvStateVdo, self).__init__(Uuid, Name, Path, SizeBytes,
-					vg_name, vg_uuid, pool_lv_uuid, PoolLv,
-					origin_uuid, OriginLv, DataPercent, Attr, Tags, active,
-					data_lv, metadata_lv, segtypes, role, layout, SnapPercent,
-					MetaDataPercent, CopyPercent, SyncPercent,
-					MetaDataSizeBytes, move_pv, move_pv_uuid)
-
-		utils.init_class_from_arguments(self, "vdo_", snake_to_pascal=True)
-
-
 # noinspection PyPep8Naming
@utils.dbus_property(LV_COMMON_INTERFACE, 'Uuid', 's')
@utils.dbus_property(LV_COMMON_INTERFACE, 'Name', 's')
@ -348,7 +275,13 @@ class LvCommon(AutomatedProperties):

 	@staticmethod
 	def handle_execute(rc, out, err):
-		_handle_execute(rc, out, err, LV_INTERFACE)
+		if rc == 0:
+			cfg.load()
+		else:
+			# Need to work on error handling, need consistent
+			raise dbus.exceptions.DBusException(
+				LV_INTERFACE,
+				'Exit code %s, stderr = %s' % (str(rc), err))

 	@staticmethod
 	def validate_dbus_object(lv_uuid, lv_name):
@ -388,7 +321,6 @@ class LvCommon(AutomatedProperties):
 					'l': 'mirror log device', 'c': 'under conversion',
 					'V': 'thin Volume', 't': 'thin pool', 'T': 'Thin pool data',
 					'e': 'raid or pool metadata or pool metadata spare',
-					'd': 'vdo pool', 'D': 'vdo pool data', 'g': 'integrity',
 					'-': 'Unspecified'}
 		return self.attr_struct(0, type_map)

@ -524,7 +456,8 @@ class Lv(LvCommon):
 		# Make sure we have a dbus object representing it
 		LvCommon.validate_dbus_object(lv_uuid, lv_name)
 		# Remove the LV, if successful then remove from the model
-		LvCommon.handle_execute(*cmdhandler.lv_remove(lv_name, remove_options))
+		rc, out, err = cmdhandler.lv_remove(lv_name, remove_options)
+		LvCommon.handle_execute(rc, out, err)
 		return '/'

 	@dbus.service.method(
@ -544,8 +477,9 @@ class Lv(LvCommon):
 		# Make sure we have a dbus object representing it
 		LvCommon.validate_dbus_object(lv_uuid, lv_name)
 		# Rename the logical volume
-		LvCommon.handle_execute(*cmdhandler.lv_rename(lv_name, new_name,
-												rename_options))
+		rc, out, err = cmdhandler.lv_rename(lv_name, new_name,
+											rename_options)
+		LvCommon.handle_execute(rc, out, err)
 		return '/'

 	@dbus.service.method(
@ -594,11 +528,13 @@ class Lv(LvCommon):
 				remainder = space % 512
 				optional_size = space + 512 - remainder

-		LvCommon.handle_execute(*cmdhandler.vg_lv_snapshot(
-			lv_name, snapshot_options,name, optional_size))
+		rc, out, err = cmdhandler.vg_lv_snapshot(
+			lv_name, snapshot_options, name, optional_size)
+		LvCommon.handle_execute(rc, out, err)
 		full_name = "%s/%s" % (dbo.vg_name_lookup(), name)
 		return cfg.om.get_object_path_by_lvm_id(full_name)

+
 	@dbus.service.method(
 		dbus_interface=LV_INTERFACE,
 		in_signature='stia{sv}',
@ -634,8 +570,9 @@ class Lv(LvCommon):
 				pv_dests.append((pv_dbus_obj.lvm_id, pr[1], pr[2]))

 		size_change = new_size_bytes - dbo.SizeBytes
-		LvCommon.handle_execute(*cmdhandler.lv_resize(
-			dbo.lvm_id, size_change,pv_dests, resize_options))
+		rc, out, err = cmdhandler.lv_resize(dbo.lvm_id, size_change,
+											pv_dests, resize_options)
+		LvCommon.handle_execute(rc, out, err)
 		return "/"

 	@dbus.service.method(
@ -670,8 +607,9 @@ class Lv(LvCommon):
 								options):
 		# Make sure we have a dbus object representing it
 		LvCommon.validate_dbus_object(uuid, lv_name)
-		LvCommon.handle_execute(*cmdhandler.activate_deactivate(
-			'lvchange', lv_name, activate, control_flags, options))
+		rc, out, err = cmdhandler.activate_deactivate(
+			'lvchange', lv_name, activate, control_flags, options)
+		LvCommon.handle_execute(rc, out, err)
 		return '/'

 	@dbus.service.method(
@ -705,8 +643,9 @@ class Lv(LvCommon):
 	def _add_rm_tags(uuid, lv_name, tags_add, tags_del, tag_options):
 		# Make sure we have a dbus object representing it
 		LvCommon.validate_dbus_object(uuid, lv_name)
-		LvCommon.handle_execute(*cmdhandler.lv_tag(
-			lv_name, tags_add, tags_del, tag_options))
+		rc, out, err = cmdhandler.lv_tag(
+			lv_name, tags_add, tags_del, tag_options)
+		LvCommon.handle_execute(rc, out, err)
 		return '/'

 	@dbus.service.method(
@ -743,152 +682,6 @@ class Lv(LvCommon):
 			cb, cbe, return_tuple=False)
 		cfg.worker_q.put(r)

-	@staticmethod
-	def _writecache_lv(lv_uuid, lv_name, lv_object_path, cache_options):
-		# Make sure we have a dbus object representing it
-		dbo = LvCommon.validate_dbus_object(lv_uuid, lv_name)
-
-		# Make sure we have dbus object representing lv to cache
-		lv_to_cache = cfg.om.get_object_by_path(lv_object_path)
-
-		if lv_to_cache:
-			fcn = lv_to_cache.lv_full_name()
-			rc, out, err = cmdhandler.lv_writecache_lv(
-				dbo.lv_full_name(), fcn, cache_options)
-			if rc == 0:
-				# When we cache an LV, the cache pool and the lv that is getting
-				# cached need to be removed from the object manager and
-				# re-created as their interfaces have changed!
-				mt_remove_dbus_objects((dbo, lv_to_cache))
-				cfg.load()
-
-				lv_converted = cfg.om.get_object_path_by_lvm_id(fcn)
-			else:
-				raise dbus.exceptions.DBusException(
-					LV_INTERFACE,
-					'Exit code %s, stderr = %s' % (str(rc), err))
-		else:
-			raise dbus.exceptions.DBusException(
-				LV_INTERFACE, 'LV to cache with object path %s not present!' %
-				lv_object_path)
-		return lv_converted
-
-	@dbus.service.method(
-		dbus_interface=LV_INTERFACE,
-		in_signature='oia{sv}',
-		out_signature='(oo)',
-		async_callbacks=('cb', 'cbe'))
-	def WriteCacheLv(self, lv_object, tmo, cache_options, cb, cbe):
-		r = RequestEntry(
-			tmo, Lv._writecache_lv,
-			(self.Uuid, self.lvm_id, lv_object,
-			cache_options), cb, cbe)
-		cfg.worker_q.put(r)
-
-
-# noinspection PyPep8Naming
-@utils.dbus_property(VDO_POOL_INTERFACE, 'OperatingMode', 's')
-@utils.dbus_property(VDO_POOL_INTERFACE, 'CompressionState', 's')
-@utils.dbus_property(VDO_POOL_INTERFACE, 'IndexState', 's')
-@utils.dbus_property(VDO_POOL_INTERFACE, 'UsedSize', 't')
-@utils.dbus_property(VDO_POOL_INTERFACE, 'SavingPercent', 'd')
-@utils.dbus_property(VDO_POOL_INTERFACE, 'Compression', 's')
-@utils.dbus_property(VDO_POOL_INTERFACE, 'Deduplication', 's')
-@utils.dbus_property(VDO_POOL_INTERFACE, 'UseMetadataHints', 's')
-@utils.dbus_property(VDO_POOL_INTERFACE, 'MinimumIoSize', 'u')
-@utils.dbus_property(VDO_POOL_INTERFACE, 'BlockMapCacheSize', "t")
-@utils.dbus_property(VDO_POOL_INTERFACE, 'BlockMapEraLength', 'u')
-@utils.dbus_property(VDO_POOL_INTERFACE, 'UseSparseIndex', 's')
-@utils.dbus_property(VDO_POOL_INTERFACE, 'IndexMemorySize', 't')
-@utils.dbus_property(VDO_POOL_INTERFACE, 'SlabSize', 't')
-@utils.dbus_property(VDO_POOL_INTERFACE, 'AckThreads', 'u')
-@utils.dbus_property(VDO_POOL_INTERFACE, 'BioThreads', 'u')
-@utils.dbus_property(VDO_POOL_INTERFACE, 'BioRotation', 'u')
-@utils.dbus_property(VDO_POOL_INTERFACE, 'CpuThreads', 'u')
-@utils.dbus_property(VDO_POOL_INTERFACE, 'HashZoneThreads', 'u')
-@utils.dbus_property(VDO_POOL_INTERFACE, 'LogicalThreads', 'u')
-@utils.dbus_property(VDO_POOL_INTERFACE, 'PhysicalThreads', 'u')
-@utils.dbus_property(VDO_POOL_INTERFACE, 'MaxDiscard', 'u')
-@utils.dbus_property(VDO_POOL_INTERFACE, 'WritePolicy', 's')
-@utils.dbus_property(VDO_POOL_INTERFACE, 'HeaderSize', 'u')
-class LvVdoPool(Lv):
-	_DataLv_meta = ("o", VDO_POOL_INTERFACE)
-
-	def __init__(self, object_path, object_state):
-		super(LvVdoPool, self).__init__(object_path, object_state)
-		self.set_interface(VDO_POOL_INTERFACE)
-		self._data_lv, _ = self._get_data_meta()
-
-	@property
-	def DataLv(self):
-		return dbus.ObjectPath(self._data_lv)
-
-	@staticmethod
-	def _enable_disable_compression(pool_uuid, pool_name, enable, comp_options):
-		# Make sure we have a dbus object representing it
-		LvCommon.validate_dbus_object(pool_uuid, pool_name)
-		# Rename the logical volume
-		LvCommon.handle_execute(*cmdhandler.lv_vdo_compression(
-			pool_name, enable, comp_options))
-		return '/'
-
-	@dbus.service.method(
-		dbus_interface=VDO_POOL_INTERFACE,
-		in_signature='ia{sv}',
-		out_signature='o',
-		async_callbacks=('cb', 'cbe'))
-	def EnableCompression(self, tmo, comp_options, cb, cbe):
-		r = RequestEntry(
-			tmo, LvVdoPool._enable_disable_compression,
-			(self.Uuid, self.lvm_id, True, comp_options),
-			cb, cbe, False)
-		cfg.worker_q.put(r)
-
-	@dbus.service.method(
-	dbus_interface=VDO_POOL_INTERFACE,
-	in_signature='ia{sv}',
-	out_signature='o',
-	async_callbacks=('cb', 'cbe'))
-	def DisableCompression(self, tmo, comp_options, cb, cbe):
-		r = RequestEntry(
-			tmo, LvVdoPool._enable_disable_compression,
-			(self.Uuid, self.lvm_id, False, comp_options),
-			cb, cbe, False)
-		cfg.worker_q.put(r)
-
-	@staticmethod
-	def _enable_disable_deduplication(pool_uuid, pool_name, enable, dedup_options):
-		# Make sure we have a dbus object representing it
-		LvCommon.validate_dbus_object(pool_uuid, pool_name)
-		# Rename the logical volume
-		LvCommon.handle_execute(*cmdhandler.lv_vdo_deduplication(
-			pool_name, enable, dedup_options))
-		return '/'
-
-	@dbus.service.method(
-		dbus_interface=VDO_POOL_INTERFACE,
-		in_signature='ia{sv}',
-		out_signature='o',
-		async_callbacks=('cb', 'cbe'))
-	def EnableDeduplication(self, tmo, dedup_options, cb, cbe):
-		r = RequestEntry(
-			tmo, LvVdoPool._enable_disable_deduplication,
-			(self.Uuid, self.lvm_id, True, dedup_options),
-			cb, cbe, False)
-		cfg.worker_q.put(r)
-
-	@dbus.service.method(
-	dbus_interface=VDO_POOL_INTERFACE,
-	in_signature='ia{sv}',
-	out_signature='o',
-	async_callbacks=('cb', 'cbe'))
-	def DisableDeduplication(self, tmo, dedup_options, cb, cbe):
-		r = RequestEntry(
-			tmo, LvVdoPool._enable_disable_deduplication,
-			(self.Uuid, self.lvm_id, False, dedup_options),
-			cb, cbe, False)
-		cfg.worker_q.put(r)
-

 # noinspection PyPep8Naming
 class LvThinPool(Lv):
@ -912,8 +705,10 @@ class LvThinPool(Lv):
 	def _lv_create(lv_uuid, lv_name, name, size_bytes, create_options):
 		# Make sure we have a dbus object representing it
 		dbo = LvCommon.validate_dbus_object(lv_uuid, lv_name)
-		LvCommon.handle_execute(*cmdhandler.lv_lv_create(
-			lv_name, create_options, name, size_bytes))
+
+		rc, out, err = cmdhandler.lv_lv_create(
+			lv_name, create_options, name, size_bytes)
+		LvCommon.handle_execute(rc, out, err)
 		full_name = "%s/%s" % (dbo.vg_name_lookup(), name)
 		return cfg.om.get_object_path_by_lvm_id(full_name)

--- a/daemons/lvmdbusd/lvm_shell_proxy.py.in
+++ b/daemons/lvmdbusd/lvm_shell_proxy.py.in
@ -13,6 +13,7 @@

 import subprocess
 import shlex
+from fcntl import fcntl, F_GETFL, F_SETFL
 import os
 import traceback
 import sys
@ -28,8 +29,7 @@ except ImportError:


 from lvmdbusd.cfg import LVM_CMD
-from lvmdbusd.utils import log_debug, log_error, add_no_notify, make_non_block,\
-							read_decoded
+from lvmdbusd.utils import log_debug, log_error, add_no_notify

 SHELL_PROMPT = "lvm> "

@ -43,6 +43,13 @@ def _quote_arg(arg):

 class LVMShellProxy(object):

+	@staticmethod
+	def _read(stream):
+		tmp = stream.read()
+		if tmp:
+			return tmp.decode("utf-8")
+		return ''
+
 	# Read until we get prompt back and a result
 	# @param: no_output	Caller expects no output to report FD
 	# Returns stdout, report, stderr (report is JSON!)
@ -68,11 +75,11 @@ class LVMShellProxy(object):

 				for r in ready[0]:
 					if r == self.lvm_shell.stdout.fileno():
-						stdout += read_decoded(self.lvm_shell.stdout)
+						stdout += LVMShellProxy._read(self.lvm_shell.stdout)
 					elif r == self.report_stream.fileno():
-						report += read_decoded(self.report_stream)
+						report += LVMShellProxy._read(self.report_stream)
 					elif r == self.lvm_shell.stderr.fileno():
-						stderr += read_decoded(self.lvm_shell.stderr)
+						stderr += LVMShellProxy._read(self.lvm_shell.stderr)

 				# Check to see if the lvm process died on us
 				if self.lvm_shell.poll():
@ -117,6 +124,11 @@ class LVMShellProxy(object):
 		assert (num_written == len(cmd_bytes))
 		self.lvm_shell.stdin.flush()

+	@staticmethod
+	def _make_non_block(stream):
+		flags = fcntl(stream, F_GETFL)
+		fcntl(stream, F_SETFL, flags | os.O_NONBLOCK)
+
 	def __init__(self):

 		# Create a temp directory
@ -150,8 +162,8 @@ class LVMShellProxy(object):
 			stderr=subprocess.PIPE, close_fds=True, shell=True)

 		try:
-			make_non_block(self.lvm_shell.stdout)
-			make_non_block(self.lvm_shell.stderr)
+			LVMShellProxy._make_non_block(self.lvm_shell.stdout)
+			LVMShellProxy._make_non_block(self.lvm_shell.stderr)

 			# wait for the first prompt
 			errors = self._read_until_prompt(no_output=True)[2]
--- a/daemons/lvmdbusd/lvmdb.py.in
+++ b/daemons/lvmdbusd/lvmdb.py.in
@ -20,7 +20,7 @@ from lvmdbusd.utils import log_debug, log_error


 class DataStore(object):
-	def __init__(self, usejson=True, vdo_support=False):
+	def __init__(self, usejson=True):
 		self.pvs = {}
 		self.vgs = {}
 		self.lvs = {}
@ -43,8 +43,6 @@ class DataStore(object):
 		else:
 			self.json = usejson

-		self.vdo_support = vdo_support
-
 	@staticmethod
 	def _insert_record(table, key, record, allowed_multiple):
 		if key in table:
@ -243,7 +241,8 @@ class DataStore(object):

 		return DataStore._parse_lvs_common(c_lvs, c_lv_full_lookup)

-	def _parse_lvs_json(self, _all):
+	@staticmethod
+	def _parse_lvs_json(_all):

 		c_lvs = OrderedDict()
 		c_lv_full_lookup = {}
@ -263,13 +262,8 @@ class DataStore(object):
 				if 'seg' in r:
 					for s in r['seg']:
 						r = c_lvs[s['lv_uuid']]
-						r.setdefault('seg_pe_ranges', []).\
-							append(s['seg_pe_ranges'])
+						r.setdefault('seg_pe_ranges', []).append(s['seg_pe_ranges'])
 						r.setdefault('segtype', []).append(s['segtype'])
-						if self.vdo_support:
-							for seg_key, seg_val in s.items():
-								if seg_key.startswith("vdo_"):
-									r[seg_key] = seg_val

 		return DataStore._parse_lvs_common(c_lvs, c_lv_full_lookup)

--- a/daemons/lvmdbusd/main.py
+++ b/daemons/lvmdbusd/main.py
@ -29,7 +29,7 @@ from .utils import log_debug, log_error
 import argparse
 import os
 import sys
-from .cmdhandler import LvmFlightRecorder, supports_vdo
+from .cmdhandler import LvmFlightRecorder
 from .request import RequestEntry


@ -44,10 +44,10 @@ def process_request():
 		try:
 			req = cfg.worker_q.get(True, 5)
 			log_debug(
-				"Method start: %s with args %s (callback = %s)" %
-				(str(req.method), str(req.arguments), str(req.cb)))
+				"Running method: %s with args %s" %
+				(str(req.method), str(req.arguments)))
 			req.run_cmd()
-			log_debug("Method complete: %s" % str(req.method))
+			log_debug("Method complete ")
 		except queue.Empty:
 			pass
 		except Exception:
@ -127,14 +127,6 @@ def main():
 		log_error("You cannot specify --lvmshell and --nojson")
 		sys.exit(1)

-	# We will dynamically add interfaces which support vdo if it
-	# exists.
-	cfg.vdo_support = supports_vdo()
-
-	if cfg.vdo_support and not cfg.args.use_json:
-		log_error("You cannot specify --nojson when lvm has VDO support")
-		sys.exit(1)
-
 	# List of threads that we start up
 	thread_list = []

@ -155,12 +147,12 @@ def main():
 	cfg.om = Lvm(BASE_OBJ_PATH)
 	cfg.om.register_object(Manager(MANAGER_OBJ_PATH))

-	cfg.db = lvmdb.DataStore(cfg.args.use_json, cfg.vdo_support)
+	cfg.db = lvmdb.DataStore(cfg.args.use_json)

 	# Using a thread to process requests, we cannot hang the dbus library
 	# thread that is handling the dbus interface
-	thread_list.append(
-		threading.Thread(target=process_request, name='process_request'))
+	thread_list.append(threading.Thread(target=process_request,
+										name='process_request'))

 	# Have a single thread handling updating lvm and the dbus model so we
 	# don't have multiple threads doing this as the same time
--- a/daemons/lvmdbusd/manager.py
+++ b/daemons/lvmdbusd/manager.py
@ -27,7 +27,7 @@ class Manager(AutomatedProperties):

 	@property
 	def Version(self):
-		return dbus.String('1.1.0')
+		return dbus.String('1.0.0')

 	@staticmethod
 	def handle_execute(rc, out, err):
@ -107,10 +107,10 @@ class Manager(AutomatedProperties):
 		rc = cfg.load(log=False)

 		if rc != 0:
-			utils.log_debug('Manager.Refresh - exit %d %d' % (rc, lc),
+			utils.log_debug('Manager.Refresh - exit %d' % (rc),
 							'bg_black', 'fg_light_red')
 		else:
-			utils.log_debug('Manager.Refresh - exit %d %d' % (rc, lc))
+			utils.log_debug('Manager.Refresh - exit %d' % (rc))
 		return rc + lc

 	@dbus.service.method(
--- a/daemons/lvmdbusd/pv.py
+++ b/daemons/lvmdbusd/pv.py
@ -14,7 +14,7 @@ import dbus
 from .cfg import PV_INTERFACE
 from . import cmdhandler
 from .utils import vg_obj_path_generate, n, pv_obj_path_generate, \
-	lv_object_path_method, _handle_execute
+	lv_object_path_method
 from .loader import common
 from .request import RequestEntry
 from .state import State
@ -138,12 +138,19 @@ class Pv(AutomatedProperties):
 		# Remove the PV, if successful then remove from the model
 		# Make sure we have a dbus object representing it
 		Pv.validate_dbus_object(pv_uuid, pv_name)
-		Pv.handle_execute(*cmdhandler.pv_remove(pv_name, remove_options))
+		rc, out, err = cmdhandler.pv_remove(pv_name, remove_options)
+		Pv.handle_execute(rc, out, err)
 		return '/'

 	@staticmethod
 	def handle_execute(rc, out, err):
-		return _handle_execute(rc, out, err, PV_INTERFACE)
+		if rc == 0:
+			cfg.load()
+		else:
+			# Need to work on error handling, need consistent
+			raise dbus.exceptions.DBusException(
+				PV_INTERFACE,
+				'Exit code %s, stderr = %s' % (str(rc), err))

 	@staticmethod
 	def validate_dbus_object(pv_uuid, pv_name):
@ -171,8 +178,10 @@ class Pv(AutomatedProperties):
 	def _resize(pv_uuid, pv_name, new_size_bytes, resize_options):
 		# Make sure we have a dbus object representing it
 		Pv.validate_dbus_object(pv_uuid, pv_name)
-		Pv.handle_execute(*cmdhandler.pv_resize(pv_name, new_size_bytes,
-												resize_options))
+
+		rc, out, err = cmdhandler.pv_resize(pv_name, new_size_bytes,
+												resize_options)
+		Pv.handle_execute(rc, out, err)
 		return '/'

 	@dbus.service.method(
@ -191,8 +200,9 @@ class Pv(AutomatedProperties):
 	def _allocation_enabled(pv_uuid, pv_name, yes_no, allocation_options):
 		# Make sure we have a dbus object representing it
 		Pv.validate_dbus_object(pv_uuid, pv_name)
-		Pv.handle_execute(*cmdhandler.pv_allocatable(pv_name, yes_no,
-														allocation_options))
+		rc, out, err = cmdhandler.pv_allocatable(
+			pv_name, yes_no, allocation_options)
+		Pv.handle_execute(rc, out, err)
 		return '/'

 	@dbus.service.method(
--- a/daemons/lvmdbusd/udevwatch.py
+++ b/daemons/lvmdbusd/udevwatch.py
@ -52,8 +52,8 @@ def filter_event(action, device):
 	# when appropriate.
 	refresh = False

-	if 'ID_FS_TYPE' in device:
-		fs_type_new = device['ID_FS_TYPE']
+	if '.ID_FS_TYPE_NEW' in device:
+		fs_type_new = device['.ID_FS_TYPE_NEW']

 		if 'LVM' in fs_type_new:
 			refresh = True
--- a/daemons/lvmdbusd/utils.py
+++ b/daemons/lvmdbusd/utils.py
@ -14,7 +14,6 @@ import ctypes
 import os
 import string
 import datetime
-from fcntl import fcntl, F_GETFL, F_SETFL

 import dbus
 from lvmdbusd import cfg
@ -27,15 +26,6 @@ import signal
 STDOUT_TTY = os.isatty(sys.stdout.fileno())


-def _handle_execute(rc, out, err, interface):
-	if rc == 0:
-		cfg.load()
-	else:
-		# Need to work on error handling, need consistent
-		raise dbus.exceptions.DBusException(
-			interface, 'Exit code %s, stderr = %s' % (str(rc), err))
-
-
 def rtype(dbus_type):
 	"""
 	Decorator making sure that the decorated function returns a value of
@ -67,20 +57,8 @@ def n32(v):
 	return int(float(v))


-@rtype(dbus.Double)
-def d(v):
-	if not v:
-		return 0.0
-	return float(v)
-
-
-def _snake_to_pascal(s):
-	return ''.join(x.title() for x in s.split('_'))
-
-
 # noinspection PyProtectedMember
-def init_class_from_arguments(
-		obj_instance, begin_suffix=None, snake_to_pascal=False):
+def init_class_from_arguments(obj_instance):
 	for k, v in list(sys._getframe(1).f_locals.items()):
 		if k != 'self':
 			nt = k
@ -91,17 +69,8 @@ def init_class_from_arguments(
 			cur = getattr(obj_instance, nt, v)

 			# print 'Init class %s = %s' % (nt, str(v))
-			if not (cur and len(str(cur)) and (v is None or len(str(v))) == 0)\
-					and (begin_suffix is None or nt.startswith(begin_suffix)):
-
-				if begin_suffix and nt.startswith(begin_suffix):
-					name = nt[len(begin_suffix):]
-					if snake_to_pascal:
-						name = _snake_to_pascal(name)
-
-					setattr(obj_instance, name, v)
-				else:
-					setattr(obj_instance, nt, v)
+			if not (cur and len(str(cur)) and (v is None or len(str(v))) == 0):
+				setattr(obj_instance, nt, v)


 def get_properties(f):
@ -369,8 +338,6 @@ def lv_object_path_method(name, meta):
 		return _hidden_lv_obj_path_generate
 	elif meta[0][0] == 't':
 		return _thin_pool_obj_path_generate
-	elif meta[0][0] == 'd':
-		return _vdo_pool_object_path_generate
 	elif meta[0][0] == 'C' and 'pool' in meta[1]:
 		return _cache_pool_obj_path_generate

@ -388,10 +355,6 @@ def _thin_pool_obj_path_generate():
 	return cfg.THIN_POOL_PATH + "/%d" % next(cfg.thin_id)


-def _vdo_pool_object_path_generate():
-	return cfg.VDO_POOL_PATH + "/%d" % next(cfg.vdo_id)
-
-
 def _cache_pool_obj_path_generate():
 	return cfg.CACHE_POOL_PATH + "/%d" % next(cfg.cache_pool_id)

@ -483,7 +446,7 @@ _ALLOWABLE_CH_SET = set(_ALLOWABLE_CH)
 _ALLOWABLE_VG_LV_CH = string.ascii_letters + string.digits + '.-_+'
 _ALLOWABLE_VG_LV_CH_SET = set(_ALLOWABLE_VG_LV_CH)
 _LV_NAME_RESERVED = ("_cdata", "_cmeta", "_corig", "_mimage", "_mlog",
-	"_pmspare", "_rimage", "_rmeta", "_tdata", "_tmeta", "_vorigin", "_vdata")
+	"_pmspare", "_rimage", "_rmeta", "_tdata", "_tmeta", "_vorigin")

 # Tags can have the characters, based on the code
 # a-zA-Z0-9._-+/=!:&#
@ -682,16 +645,3 @@ def _remove_objects(dbus_objects_rm):
 # Remove dbus objects from main thread
 def mt_remove_dbus_objects(objs):
 	MThreadRunner(_remove_objects, objs).done()
-
-
-# Make stream non-blocking
-def make_non_block(stream):
-	flags = fcntl(stream, F_GETFL)
-	fcntl(stream, F_SETFL, flags | os.O_NONBLOCK)
-
-
-def read_decoded(stream):
-	tmp = stream.read()
-	if tmp:
-		return tmp.decode("utf-8")
-	return ''
--- a/daemons/lvmdbusd/vg.py
+++ b/daemons/lvmdbusd/vg.py
@ -10,11 +10,10 @@
 from .automatedproperties import AutomatedProperties

 from . import utils
-from .utils import pv_obj_path_generate, vg_obj_path_generate, n, \
-	_handle_execute
+from .utils import pv_obj_path_generate, vg_obj_path_generate, n
 import dbus
 from . import cfg
-from .cfg import VG_INTERFACE, VG_VDO_INTERFACE
+from .cfg import VG_INTERFACE
 from . import cmdhandler
 from .request import RequestEntry
 from .loader import common
@ -47,7 +46,7 @@ def vgs_state_retrieve(selection, cache_refresh=True):

 def load_vgs(vg_specific=None, object_path=None, refresh=False,
 		emit_signal=False, cache_refresh=True):
-	return common(vgs_state_retrieve, (Vg, VgVdo, ), vg_specific, object_path, refresh,
+	return common(vgs_state_retrieve, (Vg,), vg_specific, object_path, refresh,
 					emit_signal, cache_refresh)


@ -99,11 +98,7 @@ class VgState(State):
 		if not path:
 			path = cfg.om.get_object_path_by_uuid_lvm_id(
 				self.Uuid, self.internal_name, vg_obj_path_generate)
-
-		if cfg.vdo_support:
-			return VgVdo(path, self)
-		else:
-			return Vg(path, self)
+		return Vg(path, self)

 	# noinspection PyMethodMayBeStatic
 	def creation_signature(self):
@ -159,7 +154,13 @@ class Vg(AutomatedProperties):

 	@staticmethod
 	def handle_execute(rc, out, err):
-		return _handle_execute(rc, out, err, VG_INTERFACE)
+		if rc == 0:
+			cfg.load()
+		else:
+			# Need to work on error handling, need consistent
+			raise dbus.exceptions.DBusException(
+				VG_INTERFACE,
+				'Exit code %s, stderr = %s' % (str(rc), err))

 	@staticmethod
 	def validate_dbus_object(vg_uuid, vg_name):
@ -175,8 +176,9 @@ class Vg(AutomatedProperties):
 	def _rename(uuid, vg_name, new_name, rename_options):
 		# Make sure we have a dbus object representing it
 		Vg.validate_dbus_object(uuid, vg_name)
-		Vg.handle_execute(*cmdhandler.vg_rename(
-			uuid, new_name, rename_options))
+		rc, out, err = cmdhandler.vg_rename(
+			uuid, new_name, rename_options)
+		Vg.handle_execute(rc, out, err)
 		return '/'

 	@dbus.service.method(
@ -195,7 +197,8 @@ class Vg(AutomatedProperties):
 		# Make sure we have a dbus object representing it
 		Vg.validate_dbus_object(uuid, vg_name)
 		# Remove the VG, if successful then remove from the model
-		Vg.handle_execute(*cmdhandler.vg_remove(vg_name, remove_options))
+		rc, out, err = cmdhandler.vg_remove(vg_name, remove_options)
+		Vg.handle_execute(rc, out, err)
 		return '/'

 	@dbus.service.method(
@ -211,7 +214,8 @@ class Vg(AutomatedProperties):
 	@staticmethod
 	def _change(uuid, vg_name, change_options):
 		Vg.validate_dbus_object(uuid, vg_name)
-		Vg.handle_execute(*cmdhandler.vg_change(change_options, vg_name))
+		rc, out, err = cmdhandler.vg_change(change_options, vg_name)
+		Vg.handle_execute(rc, out, err)
 		return '/'

 	# TODO: This should be broken into a number of different methods
@ -247,8 +251,9 @@ class Vg(AutomatedProperties):
 						VG_INTERFACE,
 						'PV Object path not found = %s!' % pv_op)

-		Vg.handle_execute(*cmdhandler.vg_reduce(
-			vg_name, missing, pv_devices, reduce_options))
+		rc, out, err = cmdhandler.vg_reduce(vg_name, missing, pv_devices,
+											reduce_options)
+		Vg.handle_execute(rc, out, err)
 		return '/'

 	@dbus.service.method(
@ -278,8 +283,9 @@ class Vg(AutomatedProperties):
 					VG_INTERFACE, 'PV Object path not found = %s!' % i)

 		if len(extend_devices):
-			Vg.handle_execute(*cmdhandler.vg_extend(
-				vg_name, extend_devices, extend_options))
+			rc, out, err = cmdhandler.vg_extend(vg_name, extend_devices,
+												extend_options)
+			Vg.handle_execute(rc, out, err)
 		else:
 			raise dbus.exceptions.DBusException(
 				VG_INTERFACE, 'No pv_object_paths provided!')
@ -333,8 +339,10 @@ class Vg(AutomatedProperties):

 				pv_dests.append((pv_dbus_obj.lvm_id, pr[1], pr[2]))

-		Vg.handle_execute(*cmdhandler.vg_lv_create(
-			vg_name, create_options, name, size_bytes, pv_dests))
+		rc, out, err = cmdhandler.vg_lv_create(
+			vg_name, create_options, name, size_bytes, pv_dests)
+
+		Vg.handle_execute(rc, out, err)
 		return Vg.fetch_new_lv(vg_name, name)

 	@dbus.service.method(
@ -372,8 +380,11 @@ class Vg(AutomatedProperties):
 			thin_pool, create_options):
 		# Make sure we have a dbus object representing it
 		Vg.validate_dbus_object(uuid, vg_name)
-		Vg.handle_execute(*cmdhandler.vg_lv_create_linear(
-			vg_name, create_options, name, size_bytes, thin_pool))
+
+		rc, out, err = cmdhandler.vg_lv_create_linear(
+			vg_name, create_options, name, size_bytes, thin_pool)
+
+		Vg.handle_execute(rc, out, err)
 		return Vg.fetch_new_lv(vg_name, name)

 	@dbus.service.method(
@ -395,9 +406,10 @@ class Vg(AutomatedProperties):
 			stripe_size_kb, thin_pool, create_options):
 		# Make sure we have a dbus object representing it
 		Vg.validate_dbus_object(uuid, vg_name)
-		Vg.handle_execute(*cmdhandler.vg_lv_create_striped(
+		rc, out, err = cmdhandler.vg_lv_create_striped(
 			vg_name, create_options, name, size_bytes,
-			num_stripes, stripe_size_kb, thin_pool))
+			num_stripes, stripe_size_kb, thin_pool)
+		Vg.handle_execute(rc, out, err)
 		return Vg.fetch_new_lv(vg_name, name)

 	@dbus.service.method(
@ -422,8 +434,9 @@ class Vg(AutomatedProperties):
 			num_copies, create_options):
 		# Make sure we have a dbus object representing it
 		Vg.validate_dbus_object(uuid, vg_name)
-		Vg.handle_execute(*cmdhandler.vg_lv_create_mirror(
-			vg_name, create_options, name, size_bytes, num_copies))
+		rc, out, err = cmdhandler.vg_lv_create_mirror(
+			vg_name, create_options, name, size_bytes, num_copies)
+		Vg.handle_execute(rc, out, err)
 		return Vg.fetch_new_lv(vg_name, name)

 	@dbus.service.method(
@ -446,9 +459,10 @@ class Vg(AutomatedProperties):
 						num_stripes, stripe_size_kb, create_options):
 		# Make sure we have a dbus object representing it
 		Vg.validate_dbus_object(uuid, vg_name)
-		Vg.handle_execute(*cmdhandler.vg_lv_create_raid(
+		rc, out, err = cmdhandler.vg_lv_create_raid(
 			vg_name, create_options, name, raid_type, size_bytes,
-			num_stripes, stripe_size_kb))
+			num_stripes, stripe_size_kb)
+		Vg.handle_execute(rc, out, err)
 		return Vg.fetch_new_lv(vg_name, name)

 	@dbus.service.method(
@ -546,8 +560,9 @@ class Vg(AutomatedProperties):
 				raise dbus.exceptions.DBusException(
 					VG_INTERFACE, 'PV object path = %s not found' % p)

-		Vg.handle_execute(*cmdhandler.pv_tag(
-			pv_devices, tags_add, tags_del, tag_options))
+		rc, out, err = cmdhandler.pv_tag(
+			pv_devices, tags_add, tags_del, tag_options)
+		Vg.handle_execute(rc, out, err)
 		return '/'

 	@dbus.service.method(
@ -588,8 +603,9 @@ class Vg(AutomatedProperties):
 		# Make sure we have a dbus object representing it
 		Vg.validate_dbus_object(uuid, vg_name)

-		Vg.handle_execute(*cmdhandler.vg_tag(
-			vg_name, tags_add, tags_del, tag_options))
+		rc, out, err = cmdhandler.vg_tag(
+			vg_name, tags_add, tags_del, tag_options)
+		Vg.handle_execute(rc, out, err)
 		return '/'

 	@dbus.service.method(
@ -628,7 +644,8 @@ class Vg(AutomatedProperties):
 	def _vg_change_set(uuid, vg_name, method, value, options):
 		# Make sure we have a dbus object representing it
 		Vg.validate_dbus_object(uuid, vg_name)
-		Vg.handle_execute(*method(vg_name, value, options))
+		rc, out, err = method(vg_name, value, options)
+		Vg.handle_execute(rc, out, err)
 		return '/'

 	@dbus.service.method(
@ -688,8 +705,9 @@ class Vg(AutomatedProperties):
 								options):
 		# Make sure we have a dbus object representing it
 		Vg.validate_dbus_object(uuid, vg_name)
-		Vg.handle_execute(*cmdhandler.activate_deactivate(
-			'vgchange', vg_name, activate, control_flags, options))
+		rc, out, err = cmdhandler.activate_deactivate(
+			'vgchange', vg_name, activate, control_flags, options)
+		Vg.handle_execute(rc, out, err)
 		return '/'

 	@dbus.service.method(
@ -777,71 +795,3 @@ class Vg(AutomatedProperties):
 	@property
 	def Clustered(self):
 		return self._attribute(5, 'c')
-
-
-class VgVdo(Vg):
-
-	# noinspection PyUnusedLocal,PyPep8Naming
-	def __init__(self, object_path, object_state):
-		super(VgVdo, self).__init__(object_path, vgs_state_retrieve)
-		self.set_interface(VG_VDO_INTERFACE)
-		self._object_path = object_path
-		self.state = object_state
-
-	@staticmethod
-	def _lv_vdo_pool_create_with_lv(uuid, vg_name, pool_name, lv_name,
-									data_size, virtual_size, create_options):
-		Vg.validate_dbus_object(uuid, vg_name)
-		Vg.handle_execute(*cmdhandler.vg_create_vdo_pool_lv_and_lv(
-			vg_name, pool_name, lv_name, data_size, virtual_size,
-			create_options))
-		return Vg.fetch_new_lv(vg_name, pool_name)
-
-	@dbus.service.method(
-		dbus_interface=VG_VDO_INTERFACE,
-		in_signature='ssttia{sv}',
-		out_signature='(oo)',
-		async_callbacks=('cb', 'cbe'))
-	def CreateVdoPoolandLv(self, pool_name, lv_name, data_size, virtual_size,
-							tmo, create_options, cb, cbe):
-		utils.validate_lv_name(VG_VDO_INTERFACE, self.Name, pool_name)
-		utils.validate_lv_name(VG_VDO_INTERFACE, self.Name, lv_name)
-
-		r = RequestEntry(tmo, VgVdo._lv_vdo_pool_create_with_lv,
-							(self.state.Uuid, self.state.lvm_id,
-							pool_name, lv_name, round_size(data_size),
-							round_size(virtual_size),
-							create_options), cb, cbe)
-		cfg.worker_q.put(r)
-
-	@staticmethod
-	def _vdo_pool_create(uuid, vg_name, pool_lv, name, virtual_size, create_options):
-		Vg.validate_dbus_object(uuid, vg_name)
-
-		# Retrieve the full name of the pool lv
-		pool = cfg.om.get_object_by_path(pool_lv)
-		if not pool:
-			msg = 'LV with object path %s not present!' % \
-					(pool_lv)
-			raise dbus.exceptions.DBusException(VG_VDO_INTERFACE, msg)
-
-		Vg.handle_execute(*cmdhandler.vg_create_vdo_pool(
-			pool.lv_full_name(), name, virtual_size,
-			create_options))
-		return Vg.fetch_new_lv(vg_name, pool.Name)
-
-	@dbus.service.method(
-		dbus_interface=VG_VDO_INTERFACE,
-		in_signature='ostia{sv}',
-		out_signature='(oo)',
-		async_callbacks=('cb', 'cbe'))
-	def CreateVdoPool(self, pool_lv, name, virtual_size,
-						tmo, create_options, cb, cbe):
-		utils.validate_lv_name(VG_VDO_INTERFACE, self.Name, name)
-
-		r = RequestEntry(tmo, VgVdo._vdo_pool_create,
-							(self.state.Uuid, self.state.lvm_id,
-							pool_lv, name,
-							round_size(virtual_size),
-							create_options), cb, cbe)
-		cfg.worker_q.put(r)
--- a/daemons/lvmlockd/Makefile.in
+++ b/daemons/lvmlockd/Makefile.in
@ -30,31 +30,18 @@ ifeq ("@BUILD_LOCKDDLM@", "yes")
  LOCK_LIBS += -ldlmcontrol
 endif

-ifeq ("@BUILD_LOCKDIDM@", "yes")
-  SOURCES += lvmlockd-idm.c
-  LOCK_LIBS += -lseagate_ilm -lblkid
-endif
-
 SOURCES2 = lvmlockctl.c

 TARGETS = lvmlockd lvmlockctl

-CFLOW_SOURCES = $(addprefix $(srcdir)/, $(SOURCES))
-CFLOW_TARGET = lvmlockd
-
-.PHONY: install_lvmlockd install_lvmlockctl
+.PHONY: install_lvmlockd

 include $(top_builddir)/make.tmpl

-CFLAGS += $(EXTRA_EXEC_CFLAGS)
+CFLAGS += $(EXTRA_EXEC_CFLAGS) $(SYSTEMD_CFLAGS)
 INCLUDES += -I$(top_srcdir)/libdaemon/server
-LDFLAGS += -L$(top_builddir)/libdaemon/server $(EXTRA_EXEC_LDFLAGS) $(ELDFLAGS)
-LIBS += $(DAEMON_LIBS) $(PTHREAD_LIBS)
-
-ifeq ($(USE_SD_NOTIFY),yes)
-	CFLAGS += $(shell pkg-config --cflags libsystemd) -DUSE_SD_NOTIFY
-	LIBS += $(shell pkg-config --libs libsystemd)
-endif
+LDFLAGS += $(EXTRA_EXEC_LDFLAGS) $(ELDFLAGS)
+LIBS += $(PTHREAD_LIBS) $(SYSTEMD_LIBS)

 lvmlockd: $(OBJECTS) $(top_builddir)/libdaemon/server/libdaemonserver.a $(INTERNAL_LIBS)
 	@echo "    [CC] $@"
--- a/daemons/lvmlockd/lvmlockctl.c
+++ b/daemons/lvmlockd/lvmlockctl.c
@ -18,11 +18,8 @@
 #include <errno.h>
 #include <fcntl.h>
 #include <syslog.h>
-#include <ctype.h>
 #include <sys/socket.h>
 #include <sys/un.h>
-#include <unistd.h>
-#include <sys/wait.h>

 static int quit = 0;
 static int info = 0;
@ -33,7 +30,6 @@ static int kill_vg = 0;
 static int drop_vg = 0;
 static int gl_enable = 0;
 static int gl_disable = 0;
-static int use_stderr = 0;
 static int stop_lockspaces = 0;
 static char *arg_vg_name = NULL;

@ -51,22 +47,6 @@ do { \
 	printf(fmt "\n", ##args); \
 } while (0)

-#define log_sys_emerg(fmt, args...) \
-do { \
-	if (use_stderr) \
-		fprintf(stderr, fmt "\n", ##args); \
-	else \
-		syslog(LOG_EMERG, fmt, ##args); \
-} while (0)
-
-#define log_sys_warn(fmt, args...) \
-do { \
-	if (use_stderr) \
-		fprintf(stderr, fmt "\n", ##args); \
-	else \
-		syslog(LOG_WARNING, fmt, ##args); \
-} while (0)
-
 #define MAX_LINE 512

 /* copied from lvmlockd-internal.h */
@ -300,12 +280,13 @@ static void format_info_line(char *line, char *r_name, char *r_type)

 static void format_info(void)
 {
-	char line[MAX_LINE] = { 0 };
-	char r_name[MAX_NAME+1] = { 0 };
-	char r_type[MAX_NAME+1] = { 0 };
+	char line[MAX_LINE];
+	char r_name[MAX_NAME+1];
+	char r_type[MAX_NAME+1];
 	int i, j;

 	j = 0;
+	memset(line, 0, sizeof(line));

 	for (i = 0; i < dump_len; i++) {
 		line[j++] = dump_buf[i];
@ -345,8 +326,6 @@ static int _lvmlockd_result(daemon_reply reply, int *result)
 {
 	int reply_result;

-	*result = NO_LOCKD_RESULT;
-
 	if (reply.error) {
 		log_error("lvmlockd_result reply error %d", reply.error);
 		return 0;
@ -358,7 +337,7 @@ static int _lvmlockd_result(daemon_reply reply, int *result)
 	}

 	reply_result = daemon_reply_int(reply, "op_result", NO_LOCKD_RESULT);
-	if (reply_result == NO_LOCKD_RESULT) {
+	if (reply_result == -1000) {
 		log_error("lvmlockd_result no op_result");
 		return 0;
 	}
@ -457,7 +436,6 @@ retry:
 	if (count < dump_len)
 		goto retry;

-	dump_buf[count] = 0;
 	rv = 0;
 	if ((info && dump) || !strcmp(req_name, "dump"))
 		printf("%s\n", dump_buf);
@ -523,274 +501,51 @@ static int do_stop_lockspaces(void)
 	return rv;
 }

-static int _reopen_fd_to_null(int fd)
+static int do_kill(void)
 {
-	int null_fd;
-	int r = 0;
-
-	if ((null_fd = open("/dev/null", O_RDWR)) == -1) {
-		log_error("open error /dev/null %d", errno);
-		return 0;
-	}
-
-	if (close(fd)) {
-		log_error("close error fd %d %d", fd, errno);
-		goto out;
-	}
-
-	if (dup2(null_fd, fd) == -1) {
-		log_error("dup2 error %d", errno);
-		goto out;
-	}
-
-	r = 1;
-out:
-	if (close(null_fd)) {
-		log_error("close error fd %d %d", null_fd, errno);
-		return 0;
-	}
-
-	return r;
-}
-
-#define MAX_AV_COUNT 32
-#define ONE_ARG_LEN 1024
-
-static void _run_command_pipe(const char *cmd_str, pid_t *pid_out, FILE **fp_out)
-{
-	char arg[ONE_ARG_LEN];
-	char *av[MAX_AV_COUNT + 1]; /* +1 for NULL */
-	char *arg_dup;
-	int av_count = 0;
-	int cmd_len;
-	int arg_len;
-	pid_t pid = 0;
-	FILE *fp = NULL;
-	int pipefd[2];
-	int i;
-
-	for (i = 0; i < MAX_AV_COUNT + 1; i++)
-		av[i] = NULL;
-
-	cmd_len = strlen(cmd_str);
-
-	memset(&arg, 0, sizeof(arg));
-	arg_len = 0;
-
-	for (i = 0; i < cmd_len; i++) {
-		if (!cmd_str[i])
-			break;
-
-		if (av_count == MAX_AV_COUNT)
-			goto out;
-
-		if (cmd_str[i] == '\\') {
-			if (i == (cmd_len - 1))
-				break;
-			i++;
-
-			if (cmd_str[i] == '\\') {
-				arg[arg_len++] = cmd_str[i];
-				continue;
-			}
-			if (isspace(cmd_str[i])) {
-				arg[arg_len++] = cmd_str[i];
-				continue;
-			} else {
-				break;
-			}
-		}
-
-		if (isalnum(cmd_str[i]) || ispunct(cmd_str[i])) {
-			arg[arg_len++] = cmd_str[i];
-		} else if (isspace(cmd_str[i])) {
-			if (arg_len) {
-				if (!(arg_dup = strdup(arg)))
-					goto out;
-				av[av_count++] = arg_dup;
-			}
-
-			memset(arg, 0, sizeof(arg));
-			arg_len = 0;
-		} else {
-			break;
-		}
-	}
-
-	if (arg_len) {
-		if (av_count >= MAX_AV_COUNT)
-			goto out;
-		if (!(arg_dup = strdup(arg)))
-			goto out;
-		av[av_count++] = arg_dup;
-	}
-
-	if (pipe(pipefd)) {
-		log_error("pipe error %d", errno);
-		goto out;
-	}
-
-	pid = fork();
-
-	if (pid < 0) {
-		log_error("fork error %d", errno);
-		pid = 0;
-		goto out;
-	}
-
-	if (pid == 0) {
-		/* Child -> writer, convert pipe[0] to STDOUT */
-		if (!_reopen_fd_to_null(STDIN_FILENO))
-			log_error("reopen STDIN error");
-		else if (close(pipefd[0 /*read*/]))
-			log_error("close error pipe[0] %d", errno);
-		else if (close(STDOUT_FILENO))
-			log_error("close error STDOUT %d", errno);
-		else if (dup2(pipefd[1 /*write*/], STDOUT_FILENO) == -1)
-			log_error("dup2 error STDOUT %d", errno);
-		else if (close(pipefd[1]))
-			log_error("close error pipe[1] %d", errno);
-		else {
-			execvp(av[0], av);
-			log_error("execvp error %d", errno);
-		}
-		_exit(errno);
-	}
-
-	/* Parent -> reader */
-	if (close(pipefd[1 /*write*/]))
-		log_error("close error STDOUT %d", errno);
-
-	if (!(fp = fdopen(pipefd[0 /*read*/],  "r"))) {
-		log_error("fdopen STDIN error %d", errno);
-		if (close(pipefd[0]))
-			log_error("close error STDIN %d", errno);
-	}
-
- out:
-	for (i = 0; i < MAX_AV_COUNT + 1; i++)
-		free(av[i]);
-
-	*pid_out = pid;
-	*fp_out = fp;
-}
-
-/* Returns -1 on error, 0 on success. */
-
-static int _close_command_pipe(pid_t pid, FILE *fp)
-{
-	int status, estatus;
-	int ret = -1;
-
-	if (waitpid(pid, &status, 0) != pid) {
-		log_error("waitpid error pid %d %d", pid, errno);
-		goto out;
-	}
-
-	if (WIFEXITED(status)) {
-		/* pid exited with an exit code */
-		estatus = WEXITSTATUS(status);
-
-		/* exit status 0: child success */
-		if (!estatus) {
-			ret = 0;
-			goto out;
-		}
-
-		/* exit status not zero: child error */
-		log_error("child exit error %d", estatus);
-		goto out;
-	}
-
-	if (WIFSIGNALED(status)) {
-		/* pid terminated due to a signal */
-		log_error("child exit from signal");
-		goto out;
-	}
-
-	log_error("child exit problem");
-
-out:
-	if (fp && fclose(fp))
-		log_error("fclose error STDIN %d", errno);
-	return ret;
-}
-
-/* Returns -1 on error, 0 on success. */
-
-static int _get_kill_command(char *kill_cmd)
-{
-	char config_cmd[PATH_MAX + 128] = { 0 };
-	char config_val[1024] = { 0 };
-	char line[PATH_MAX] = { 0 };
-	pid_t pid = 0;
-	FILE *fp = NULL;
-
-	snprintf(config_cmd, PATH_MAX, "%s config --typeconfig full global/lvmlockctl_kill_command", LVM_PATH);
-
-	_run_command_pipe(config_cmd, &pid, &fp);
-
-	if (!pid) {
-		log_error("failed to run %s", config_cmd);
-		return -1;
-	}
-
-	if (!fp) {
-		log_error("failed to get output %s", config_cmd);
-		_close_command_pipe(pid, fp);
-		return -1;
-	}
-
-	if (!fgets(line, sizeof(line), fp)) {
-		log_error("no output from %s", config_cmd);
-		goto bad;
-	}
-
-	if (sscanf(line, "lvmlockctl_kill_command=\"%256[^\n\"]\"", config_val) != 1) {
-		log_error("unrecognized config value from %s", config_cmd);
-		goto bad;
-	}
-
-	if (!config_val[0] || (config_val[0] == ' ')) {
-		log_error("invalid config value from %s", config_cmd);
-		goto bad;
-	}
-
-	if (config_val[0] != '/') {
-		log_error("lvmlockctl_kill_command must be full path");
-		goto bad;
-	}
-
-	printf("Found lvmlockctl_kill_command: %s\n", config_val);
-
-	snprintf(kill_cmd, PATH_MAX, "%s %s", config_val, arg_vg_name);
-	kill_cmd[PATH_MAX-1] = '\0';
-
-	_close_command_pipe(pid, fp);
-	return 0;
-bad:
-	_close_command_pipe(pid, fp);
-	return -1;
-}
-
-/* Returns -1 on error, 0 on success. */
-
-static int _run_kill_command(char *kill_cmd)
-{
-	pid_t pid = 0;
-	FILE *fp = NULL;
+	daemon_reply reply;
+	int result;
 	int rv;

-	_run_command_pipe(kill_cmd, &pid, &fp);
-	rv = _close_command_pipe(pid, fp);
+	syslog(LOG_EMERG, "Lost access to sanlock lease storage in VG %s.", arg_vg_name);
+	/* These two lines explain the manual alternative to the FIXME below. */
+	syslog(LOG_EMERG, "Immediately deactivate LVs in VG %s.", arg_vg_name);
+	syslog(LOG_EMERG, "Once VG is unused, run lvmlockctl --drop %s.", arg_vg_name);

-	if (!pid)
-		return -1;
+	/*
+	 * It may not be strictly necessary to notify lvmlockd of the kill, but
+	 * lvmlockd can use this information to avoid attempting any new lock
+	 * requests in the VG (which would fail anyway), and can return an
+	 * error indicating that the VG has been killed.
+	 */

-	if (rv < 0)
-		return -1;
+	reply = _lvmlockd_send("kill_vg",
+				"cmd = %s", "lvmlockctl",
+				"pid = " FMTd64, (int64_t) getpid(),
+				"vg_name = %s", arg_vg_name,
+				NULL);

-	return 0;
+	if (!_lvmlockd_result(reply, &result)) {
+		log_error("lvmlockd result %d", result);
+		rv = result;
+	} else {
+		rv = 0;
+	}
+
+	daemon_reply_destroy(reply);
+
+	/*
+	 * FIXME: here is where we should implement a strong form of
+	 * blkdeactivate, and if it completes successfully, automatically call
+	 * do_drop() afterward.  (The drop step may not always be necessary
+	 * if the lvm commands run while shutting things down release all the
+	 * leases.)
+	 *
+	 * run_strong_blkdeactivate();
+	 * do_drop();
+	 */
+
+	return rv;
 }

 static int do_drop(void)
@ -799,7 +554,7 @@ static int do_drop(void)
 	int result;
 	int rv;

-	log_sys_warn("Dropping locks for VG %s.", arg_vg_name);
+	syslog(LOG_WARNING, "Dropping locks for VG %s.", arg_vg_name);

 	/*
 	 * Check for misuse by looking for any active LVs in the VG
@ -827,84 +582,6 @@ static int do_drop(void)
 	return rv;
 }

-static int do_kill(void)
-{
-	char kill_cmd[PATH_MAX] = { 0 };
-	daemon_reply reply;
-	int no_kill_command = 0;
-	int result;
-	int rv;
-
-	log_sys_emerg("lvmlockd lost access to locks in VG %s.", arg_vg_name);
-
-	rv = _get_kill_command(kill_cmd);
-	if (rv < 0) {
-		log_sys_emerg("Immediately deactivate LVs in VG %s.", arg_vg_name);
-		log_sys_emerg("Once VG is unused, run lvmlockctl --drop %s.", arg_vg_name);
-		no_kill_command = 1;
-	}
-
-	/*
-	 * It may not be strictly necessary to notify lvmlockd of the kill, but
-	 * lvmlockd can use this information to avoid attempting any new lock
-	 * requests in the VG (which would fail anyway), and can return an
-	 * error indicating that the VG has been killed.
-	 */
-	_lvmlockd = lvmlockd_open(NULL);
-	if (_lvmlockd.socket_fd < 0 || _lvmlockd.error) {
-		log_error("Cannot connect to lvmlockd for kill_vg.");
-		goto run;
-	}
-	reply = _lvmlockd_send("kill_vg",
-				"cmd = %s", "lvmlockctl",
-				"pid = " FMTd64, (int64_t) getpid(),
-				"vg_name = %s", arg_vg_name,
-				NULL);
-	if (!_lvmlockd_result(reply, &result))
-		log_error("lvmlockd result %d kill_vg", result);
-	daemon_reply_destroy(reply);
-	lvmlockd_close(_lvmlockd);
-
- run:
-	if (no_kill_command)
-		return 0;
-
-	rv = _run_kill_command(kill_cmd);
-	if (rv < 0) {
-		log_sys_emerg("Failed to run VG %s kill command %s", arg_vg_name, kill_cmd);
-		log_sys_emerg("Immediately deactivate LVs in VG %s.", arg_vg_name);
-		log_sys_emerg("Once VG is unused, run lvmlockctl --drop %s.", arg_vg_name);
-		return -1;
-	}
-
-	log_sys_warn("Successful VG %s kill command %s", arg_vg_name, kill_cmd);
-
-	/*
-	 * If kill command was successfully, call do_drop().  (The drop step
-	 * may not always be necessary if the lvm commands run while shutting
-	 * things down release all the leases.)
-	 */
-	rv = 0;
-	_lvmlockd = lvmlockd_open(NULL);
-	if (_lvmlockd.socket_fd < 0 || _lvmlockd.error) {
-		log_sys_emerg("Failed to connect to lvmlockd to drop locks in VG %s.", arg_vg_name);
-		return -1;
-	}
-	reply = _lvmlockd_send("drop_vg",
-				"cmd = %s", "lvmlockctl",
-				"pid = " FMTd64, (int64_t) getpid(),
-				"vg_name = %s", arg_vg_name,
-				NULL);
-	if (!_lvmlockd_result(reply, &result)) {
-		log_sys_emerg("Failed to drop locks in VG %s", arg_vg_name);
-		rv = result;
-	}
-	daemon_reply_destroy(reply);
-	lvmlockd_close(_lvmlockd);
-
-	return rv;
-}
-
 static void print_usage(void)
 {
 	printf("lvmlockctl options\n");
@ -922,7 +599,7 @@ static void print_usage(void)
 	printf("--force | -f 0|1>\n");
 	printf("      Force option for other commands.\n");
 	printf("--kill | -k <vgname>\n");
-	printf("      Kill access to the VG locks are lost (see lvmlockctl_kill_command).\n");
+	printf("      Kill access to the VG when sanlock cannot renew lease.\n");
 	printf("--drop | -r <vgname>\n");
 	printf("      Clear locks for the VG when it is unused after kill (-k).\n");
 	printf("--gl-enable | -E <vgname>\n");
@ -931,8 +608,6 @@ static void print_usage(void)
 	printf("      Tell lvmlockd to disable the global lock in a sanlock VG.\n");
 	printf("--stop-lockspaces | -S\n");
 	printf("      Stop all lockspaces.\n");
-	printf("--stderr | -e\n");
-	printf("      Send kill and drop messages to stderr instead of syslog\n");
 }

 static int read_options(int argc, char *argv[])
@ -952,7 +627,6 @@ static int read_options(int argc, char *argv[])
 		{"gl-enable",       required_argument, 0,  'E' },
 		{"gl-disable",      required_argument, 0,  'D' },
 		{"stop-lockspaces", no_argument,       0,  'S' },
-		{"stderr",          no_argument,       0,  'e' },
 		{0, 0, 0, 0 }
 	};

@ -962,7 +636,7 @@ static int read_options(int argc, char *argv[])
 	}

 	while (1) {
-		c = getopt_long(argc, argv, "hqidE:D:w:k:r:Se", long_options, &option_index);
+		c = getopt_long(argc, argv, "hqidE:D:w:k:r:S", long_options, &option_index);
 		if (c == -1)
 			break;

@ -988,30 +662,23 @@ static int read_options(int argc, char *argv[])
 			break;
 		case 'k':
 			kill_vg = 1;
-			free(arg_vg_name);
 			arg_vg_name = strdup(optarg);
 			break;
 		case 'r':
 			drop_vg = 1;
-			free(arg_vg_name);
 			arg_vg_name = strdup(optarg);
 			break;
 		case 'E':
 			gl_enable = 1;
-			free(arg_vg_name);
 			arg_vg_name = strdup(optarg);
 			break;
 		case 'D':
 			gl_disable = 1;
-			free(arg_vg_name);
 			arg_vg_name = strdup(optarg);
 			break;
 		case 'S':
 			stop_lockspaces = 1;
 			break;
-		case 'e':
-			use_stderr = 1;
-			break;
 		default:
 			print_usage();
 			exit(1);
@ -1030,12 +697,8 @@ int main(int argc, char **argv)
 	if (rv < 0)
 		return rv;

-	/* do_kill handles lvmlockd connections itself */
-	if (kill_vg)
-		return do_kill();
-
-
 	_lvmlockd = lvmlockd_open(NULL);
+
 	if (_lvmlockd.socket_fd < 0 || _lvmlockd.error) {
 		log_error("Cannot connect to lvmlockd.");
 		return -1;
@ -1056,6 +719,11 @@ int main(int argc, char **argv)
 		goto out;
 	}

+	if (kill_vg) {
+		rv = do_kill();
+		goto out;
+	}
+
 	if (drop_vg) {
 		rv = do_drop();
 		goto out;
--- a/daemons/lvmlockd/lvmlockd-client.h
+++ b/daemons/lvmlockd/lvmlockd-client.h
@ -14,7 +14,6 @@
 #include "libdaemon/client/daemon-client.h"

 #define LVMLOCKD_SOCKET DEFAULT_RUN_DIR "/lvmlockd.socket"
-#define LVMLOCKD_ADOPT_FILE DEFAULT_RUN_DIR "/lvmlockd.adopt"

 /* Wrappers to open/close connection */

@ -23,9 +22,9 @@ static inline daemon_handle lvmlockd_open(const char *sock)
 	daemon_info lvmlockd_info = {
 		.path = "lvmlockd",
 		.socket = sock ?: LVMLOCKD_SOCKET,
-		.autostart = 0,
 		.protocol = "lvmlockd",
 		.protocol_version = 1,
+		.autostart = 0
 	};

 	return daemon_open(lvmlockd_info);
@ -33,7 +32,7 @@ static inline daemon_handle lvmlockd_open(const char *sock)

 static inline void lvmlockd_close(daemon_handle h)
 {
-	daemon_close(h);
+	return daemon_close(h);
 }

 /*
--- a/daemons/lvmlockd/lvmlockd-core.c
+++ b/daemons/lvmlockd/lvmlockd-core.c
--- a/daemons/lvmlockd/lvmlockd-dlm.c
+++ b/daemons/lvmlockd/lvmlockd-dlm.c
@ -119,7 +119,6 @@ static int read_cluster_name(char *clustername)
 			log_error(close_error_msg, fd);
 		return rv;
 	}
-	clustername[rv] = 0;

 	n = strstr(clustername, "\n");
 	if (n)
@ -129,18 +128,16 @@ static int read_cluster_name(char *clustername)
 	return 0;
 }

-#define MAX_VERSION 16
-
 int lm_init_vg_dlm(char *ls_name, char *vg_name, uint32_t flags, char *vg_args)
 {
 	char clustername[MAX_ARGS+1];
-	char lock_args_version[MAX_VERSION+1];
+	char lock_args_version[MAX_ARGS+1];
 	int rv;

 	memset(clustername, 0, sizeof(clustername));
 	memset(lock_args_version, 0, sizeof(lock_args_version));

-	snprintf(lock_args_version, MAX_VERSION, "%u.%u.%u",
+	snprintf(lock_args_version, MAX_ARGS, "%u.%u.%u",
 		 VG_LOCK_ARGS_MAJOR, VG_LOCK_ARGS_MINOR, VG_LOCK_ARGS_PATCH);

 	rv = read_cluster_name(clustername);
@ -152,9 +149,7 @@ int lm_init_vg_dlm(char *ls_name, char *vg_name, uint32_t flags, char *vg_args)
 		return -EARGS;
 	}

-	rv = snprintf(vg_args, MAX_ARGS, "%s:%s", lock_args_version, clustername);
-	if (rv >= MAX_ARGS)
-		log_debug("init_vg_dlm vg_args may be too long %d %s", rv, vg_args);
+	snprintf(vg_args, MAX_ARGS, "%s:%s", lock_args_version, clustername);
 	rv = 0;

 	log_debug("init_vg_dlm done %s vg_args %s", ls_name, vg_args);
@ -328,7 +323,8 @@ int lm_rem_resource_dlm(struct lockspace *ls, struct resource *r)
 		log_error("S %s R %s rem_resource_dlm unlock error %d", ls->name, r->name, rv);
 	}
 out:
-	free(rdd->vb);
+	if (rdd->vb)
+		free(rdd->vb);

 	memset(rdd, 0, sizeof(struct rd_dlm));
 	r->lm_init = 0;
@ -398,18 +394,12 @@ static int lm_adopt_dlm(struct lockspace *ls, struct resource *r, int ld_mode,
 			  (void *)1, (void *)1, (void *)1,
 			  NULL, NULL);

-	if (rv == -1 && (errno == EAGAIN)) {
+	if (rv == -1 && errno == -EAGAIN) {
 		log_debug("S %s R %s adopt_dlm adopt mode %d try other mode",
 			  ls->name, r->name, ld_mode);
 		rv = -EUCLEAN;
 		goto fail;
 	}
-	if (rv == -1 && (errno == ENOENT)) {
-		log_debug("S %s R %s adopt_dlm adopt mode %d no lock",
-			  ls->name, r->name, ld_mode);
-		rv = -ENOENT;
-		goto fail;
-	}
 	if (rv < 0) {
 		log_debug("S %s R %s adopt_dlm mode %d flags %x error %d errno %d",
 			  ls->name, r->name, mode, flags, rv, errno);
@ -791,18 +781,17 @@ int lm_is_running_dlm(void)

 int lm_refresh_lv_start_dlm(struct action *act)
 {
-	char path[PATH_MAX] = { 0 };
+	char path[PATH_MAX];
 	char command[DLMC_RUN_COMMAND_LEN];
 	char run_uuid[DLMC_RUN_UUID_LEN];
 	char *p, *vgname, *lvname;
 	int rv;

 	/* split /dev/vgname/lvname into vgname and lvname strings */
-	strncpy(path, act->path, PATH_MAX-1);
+	strncpy(path, act->path, strlen(act->path));

 	/* skip past dev */
-	if (!(p = strchr(path + 1, '/')))
-		return -EINVAL;
+	p = strchr(path + 1, '/');

 	/* skip past slashes */
 	while (*p == '/')
--- a/daemons/lvmlockd/lvmlockd-idm.c
+++ b/daemons/lvmlockd/lvmlockd-idm.c
@ -1,837 +0,0 @@
-/*
- * Copyright (C) 2020-2021 Seagate Ltd.
- *
- * This file is part of LVM2.
- *
- * This copyrighted material is made available to anyone wishing to use,
- * modify, copy, or redistribute it subject to the terms and conditions
- * of the GNU Lesser General Public License v.2.1.
- */
-
-#define _XOPEN_SOURCE 500  /* pthread */
-#define _ISOC99_SOURCE
-
-#include "tools/tool.h"
-
-#include "daemon-server.h"
-#include "lib/mm/xlate.h"
-
-#include "lvmlockd-internal.h"
-#include "daemons/lvmlockd/lvmlockd-client.h"
-
-#include "ilm.h"
-
-#include <blkid/blkid.h>
-#include <ctype.h>
-#include <dirent.h>
-#include <errno.h>
-#include <poll.h>
-#include <regex.h>
-#include <stddef.h>
-#include <syslog.h>
-#include <sys/sysmacros.h>
-#include <time.h>
-
-#define IDM_TIMEOUT	60000	/* unit: millisecond, 60 seconds */
-
-/*
- * Each lockspace thread has its own In-Drive Mutex (IDM) lock manager's
- * connection.  After established socket connection, the lockspace has
- * been created in IDM lock manager and afterwards use the socket file
- * descriptor to send any requests for lock related operations.
- */
-
-struct lm_idm {
-	int sock;	/* IDM lock manager connection */
-};
-
-struct rd_idm {
-	struct idm_lock_id id;
-	struct idm_lock_op op;
-	uint64_t vb_timestamp;
-	struct val_blk *vb;
-};
-
-int lm_data_size_idm(void)
-{
-	return sizeof(struct rd_idm);
-}
-
-static uint64_t read_utc_us(void)
-{
-	struct timespec cur_time;
-
-	clock_gettime(CLOCK_REALTIME, &cur_time);
-
-	/*
-	 * Convert to microseconds unit.  IDM reserves the MSB in 8 bytes
-	 * and the low 56 bits are used for timestamp; 56 bits can support
-	 * calendar year to 2284, so it has 260 years for overflow.  Thus it
-	 * is quite safe for overflow issue when wrote this code.
-	 */
-	return cur_time.tv_sec * 1000000 + cur_time.tv_nsec / 1000;
-}
-
-static int uuid_read_format(char *uuid_str, const char *buffer)
-{
-	int out = 0;
-
-	/* just strip out any dashes */
-	while (*buffer) {
-
-		if (*buffer == '-') {
-			buffer++;
-			continue;
-		}
-
-		if (out >= 32) {
-			log_error("Too many characters to be uuid.");
-			return -1;
-		}
-
-		uuid_str[out++] = *buffer;
-		buffer++;
-	}
-
-	if (out != 32) {
-		log_error("Couldn't read uuid: incorrect number of "
-			  "characters.");
-		return -1;
-	}
-
-	return 0;
-}
-
-#define SYSFS_ROOT		"/sys"
-#define BUS_SCSI_DEVS		"/bus/scsi/devices"
-
-static struct idm_lock_op glb_lock_op;
-
-static void lm_idm_free_dir_list(struct dirent **dir_list, int dir_num)
-{
-	int i;
-
-	for (i = 0; i < dir_num; ++i)
-		free(dir_list[i]);
-	free(dir_list);
-}
-
-static int lm_idm_scsi_directory_select(const struct dirent *s)
-{
-	regex_t regex;
-	int ret;
-
-	/* Only select directory with the format x:x:x:x */
-	ret = regcomp(&regex, "^[0-9]+:[0-9]+:[0-9]+:[0-9]+$", REG_EXTENDED);
-	if (ret)
-		return 0;
-
-	ret = regexec(&regex, s->d_name, 0, NULL, 0);
-	if (!ret) {
-		regfree(&regex);
-		return 1;
-	}
-
-	regfree(&regex);
-	return 0;
-}
-
-static int lm_idm_scsi_find_block_dirctory(const char *block_path)
-{
-	struct stat stats;
-
-	if ((stat(block_path, &stats) >= 0) && S_ISDIR(stats.st_mode))
-		return 0;
-
-	return -1;
-}
-
-static int lm_idm_scsi_block_node_select(const struct dirent *s)
-{
-	if (DT_LNK != s->d_type && DT_DIR != s->d_type)
-		return 0;
-
-	if (DT_DIR == s->d_type) {
-		/* Skip this directory: '.' and parent: '..' */
-		if (!strcmp(s->d_name, ".") || !strcmp(s->d_name, ".."))
-			return 0;
-	}
-
-	return 1;
-}
-
-static int lm_idm_scsi_find_block_node(const char *blk_path, char **blk_dev)
-{
-        struct dirent **dir_list;
-        int dir_num;
-
-        dir_num = scandir(blk_path, &dir_list, lm_idm_scsi_block_node_select, NULL);
-        if (dir_num < 0) {
-		log_error("Cannot find valid directory entry in %s", blk_path);
-                return -1;
-	}
-
-	/*
-	 * Should have only one block name under the path, if the dir_num is
-	 * not 1 (e.g. 0 or any number bigger than 1), it must be wrong and
-	 * should never happen.
-	 */
-	if (dir_num == 1)
-		*blk_dev = strdup(dir_list[0]->d_name);
-	else
-		*blk_dev = NULL;
-
-	lm_idm_free_dir_list(dir_list, dir_num);
-
-	if (!*blk_dev)
-		return -1;
-
-        return dir_num;
-}
-
-static int lm_idm_scsi_search_propeller_partition(char *dev)
-{
-	int i, nparts;
-	blkid_probe pr;
-	blkid_partlist ls;
-	int found = -1;
-
-	pr = blkid_new_probe_from_filename(dev);
-	if (!pr) {
-		log_error("%s: failed to create a new libblkid probe", dev);
-		return -1;
-	}
-
-	/* Binary interface */
-	ls = blkid_probe_get_partitions(pr);
-	if (!ls) {
-		log_error("%s: failed to read partitions", dev);
-		return -1;
-	}
-
-	/* List partitions */
-	nparts = blkid_partlist_numof_partitions(ls);
-	if (!nparts)
-		goto done;
-
-	for (i = 0; i < nparts; i++) {
-		const char *p;
-		blkid_partition par = blkid_partlist_get_partition(ls, i);
-
-		p = blkid_partition_get_name(par);
-		if (p) {
-			log_debug("partition name='%s'", p);
-
-			if (!strcmp(p, "propeller"))
-				found = blkid_partition_get_partno(par);
-		}
-
-		if (found >= 0)
-			break;
-	}
-
-done:
-	blkid_free_probe(pr);
-	return found;
-}
-
-static char *lm_idm_scsi_get_block_device_node(const char *scsi_path)
-{
-	char *blk_path = NULL;
-	char *blk_dev = NULL;
-	char *dev_node = NULL;
-	int ret;
-
-	/*
-	 * Locate the "block" directory, such like:
-	 * /sys/bus/scsi/devices/1:0:0:0/block
-	 */
-	ret = asprintf(&blk_path, "%s/%s", scsi_path, "block");
-	if (ret < 0) {
-		log_error("Fail to allocate block path for %s", scsi_path);
-		goto fail;
-	}
-
-	ret = lm_idm_scsi_find_block_dirctory(blk_path);
-	if (ret < 0) {
-		log_error("Fail to find block path %s", blk_path);
-		goto fail;
-	}
-
-	/*
-	 * Locate the block device name, such like:
-	 * /sys/bus/scsi/devices/1:0:0:0/block/sdb
-	 *
-	 * After return from this function and if it makes success,
-	 * the global variable "blk_dev" points to the block device
-	 * name, in this example it points to string "sdb".
-	 */
-	ret = lm_idm_scsi_find_block_node(blk_path, &blk_dev);
-	if (ret < 0) {
-		log_error("Fail to find block node");
-		goto fail;
-	}
-
-	ret = asprintf(&dev_node, "/dev/%s", blk_dev);
-	if (ret < 0) {
-		log_error("Fail to allocate memory for blk node path");
-		goto fail;
-	}
-
-	ret = lm_idm_scsi_search_propeller_partition(dev_node);
-	if (ret < 0)
-		goto fail;
-
-	free(blk_path);
-	free(blk_dev);
-	return dev_node;
-
-fail:
-	free(blk_path);
-	free(blk_dev);
-	free(dev_node);
-	return NULL;
-}
-
-static int lm_idm_get_gl_lock_pv_list(void)
-{
-	struct dirent **dir_list;
-	char scsi_bus_path[PATH_MAX];
-	char *drive_path;
-	int i, dir_num, ret;
-
-	if (glb_lock_op.drive_num)
-		return 0;
-
-	snprintf(scsi_bus_path, sizeof(scsi_bus_path), "%s%s",
-		 SYSFS_ROOT, BUS_SCSI_DEVS);
-
-	dir_num = scandir(scsi_bus_path, &dir_list,
-			  lm_idm_scsi_directory_select, NULL);
-	if (dir_num < 0) {  /* scsi mid level may not be loaded */
-		log_error("Attached devices: none");
-		return -1;
-	}
-
-	for (i = 0; i < dir_num; i++) {
-		char *scsi_path;
-
-		ret = asprintf(&scsi_path, "%s/%s", scsi_bus_path,
-			       dir_list[i]->d_name);
-		if (ret < 0) {
-			log_error("Fail to allocate memory for scsi directory");
-			goto failed;
-		}
-
-		if (glb_lock_op.drive_num >= ILM_DRIVE_MAX_NUM) {
-			log_error("Global lock: drive number %d exceeds limitation (%d) ?!",
-				  glb_lock_op.drive_num, ILM_DRIVE_MAX_NUM);
-			free(scsi_path);
-			goto failed;
-		}
-
-		drive_path = lm_idm_scsi_get_block_device_node(scsi_path);
-		if (!drive_path) {
-			free(scsi_path);
-			continue;
-		}
-
-		glb_lock_op.drives[glb_lock_op.drive_num] = drive_path;
-		glb_lock_op.drive_num++;
-
-		free(scsi_path);
-	}
-
-	lm_idm_free_dir_list(dir_list, dir_num);
-	return 0;
-
-failed:
-	lm_idm_free_dir_list(dir_list, dir_num);
-
-	for (i = 0; i < glb_lock_op.drive_num; i++) {
-		if (glb_lock_op.drives[i]) {
-			free(glb_lock_op.drives[i]);
-			glb_lock_op.drives[i] = NULL;
-		}
-	}
-
-	return -1;
-}
-
-static void lm_idm_update_vb_timestamp(uint64_t *vb_timestamp)
-{
-	uint64_t utc_us = read_utc_us();
-
-	/*
-	 * It's possible that the multiple nodes have no clock
-	 * synchronization with microsecond prcision and the time
-	 * is going backward.  For this case, simply increment the
-	 * existing timestamp and write out to drive.
-	 */
-	if (*vb_timestamp >= utc_us)
-		(*vb_timestamp)++;
-	else
-		*vb_timestamp = utc_us;
-}
-
-int lm_prepare_lockspace_idm(struct lockspace *ls)
-{
-	struct lm_idm *lm = NULL;
-
-	lm = malloc(sizeof(struct lm_idm));
-	if (!lm) {
-		log_error("S %s prepare_lockspace_idm fail to allocate lm_idm for %s",
-			  ls->name, ls->vg_name);
-		return -ENOMEM;
-	}
-	memset(lm, 0x0, sizeof(struct lm_idm));
-
-	ls->lm_data = lm;
-	log_debug("S %s prepare_lockspace_idm done", ls->name);
-	return 0;
-}
-
-int lm_add_lockspace_idm(struct lockspace *ls, int adopt)
-{
-	char killpath[IDM_FAILURE_PATH_LEN];
-	char killargs[IDM_FAILURE_ARGS_LEN];
-	struct lm_idm *lmi = (struct lm_idm *)ls->lm_data;
-	int rv;
-
-	if (daemon_test)
-		return 0;
-
-	if (!strcmp(ls->name, S_NAME_GL_IDM)) {
-		/*
-		 * Prepare the pv list for global lock, if the drive contains
-		 * "propeller" partition, then this drive will be considered
-		 * as a member of pv list.
-		 */
-		rv = lm_idm_get_gl_lock_pv_list();
-		if (rv < 0) {
-			log_error("S %s add_lockspace_idm fail to get pv list for glb lock",
-				  ls->name);
-			return -EIO;
-		} else {
-			log_error("S %s add_lockspace_idm get pv list for glb lock",
-				  ls->name);
-		}
-	}
-
-	/*
-	 * Construct the execution path for command "lvmlockctl" by using the
-	 * path to the lvm binary and appending "lockctl".
-	 */
-	memset(killpath, 0, sizeof(killpath));
-	snprintf(killpath, IDM_FAILURE_PATH_LEN, "%slockctl", LVM_PATH);
-
-	/* Pass the argument "--kill vg_name" for killpath */
-	memset(killargs, 0, sizeof(killargs));
-	snprintf(killargs, IDM_FAILURE_ARGS_LEN, "--kill %s", ls->vg_name);
-
-	/* Connect with IDM lock manager per every lockspace. */
-	rv = ilm_connect(&lmi->sock);
-	if (rv < 0) {
-		log_error("S %s add_lockspace_idm fail to connect the lock manager %d",
-			  ls->name, lmi->sock);
-		lmi->sock = 0;
-		rv = -EMANAGER;
-		goto fail;
-	}
-
-	rv = ilm_set_killpath(lmi->sock, killpath, killargs);
-	if (rv < 0) {
-		log_error("S %s add_lockspace_idm fail to set kill path %d",
-			  ls->name, rv);
-		rv = -EMANAGER;
-		goto fail;
-	}
-
-	log_debug("S %s add_lockspace_idm kill path is: \"%s %s\"",
-		  ls->name, killpath, killargs);
-
-	log_debug("S %s add_lockspace_idm done", ls->name);
-	return 0;
-
-fail:
-	if (lmi && lmi->sock)
-		close(lmi->sock);
-
-	free(lmi);
-
-	return rv;
-}
-
-int lm_rem_lockspace_idm(struct lockspace *ls, int free_vg)
-{
-	struct lm_idm *lmi = (struct lm_idm *)ls->lm_data;
-	int i, rv = 0;
-
-	if (daemon_test)
-		goto out;
-
-	rv = ilm_disconnect(lmi->sock);
-	if (rv < 0)
-		log_error("S %s rem_lockspace_idm error %d", ls->name, rv);
-
-	/* Release pv list for global lock */
-	if (!strcmp(ls->name, "lvm_global")) {
-		for (i = 0; i < glb_lock_op.drive_num; i++) {
-			if (glb_lock_op.drives[i]) {
-				free(glb_lock_op.drives[i]);
-				glb_lock_op.drives[i] = NULL;
-			}
-		}
-	}
-
-out:
-	free(lmi);
-	ls->lm_data = NULL;
-	return rv;
-}
-
-static int lm_add_resource_idm(struct lockspace *ls, struct resource *r)
-{
-	struct rd_idm *rdi = (struct rd_idm *)r->lm_data;
-
-	if (r->type == LD_RT_GL || r->type == LD_RT_VG) {
-		rdi->vb = zalloc(sizeof(struct val_blk));
-		if (!rdi->vb)
-			return -ENOMEM;
-	}
-
-	return 0;
-}
-
-int lm_rem_resource_idm(struct lockspace *ls, struct resource *r)
-{
-	struct rd_idm *rdi = (struct rd_idm *)r->lm_data;
-
-	free(rdi->vb);
-
-	memset(rdi, 0, sizeof(struct rd_idm));
-	r->lm_init = 0;
-	return 0;
-}
-
-static int to_idm_mode(int ld_mode)
-{
-	switch (ld_mode) {
-	case LD_LK_EX:
-		return IDM_MODE_EXCLUSIVE;
-	case LD_LK_SH:
-		return IDM_MODE_SHAREABLE;
-	default:
-		break;
-	};
-
-	return -1;
-}
-
-int lm_lock_idm(struct lockspace *ls, struct resource *r, int ld_mode,
-		struct val_blk *vb_out, char *lv_uuid, struct pvs *pvs,
-		int adopt)
-{
-	struct lm_idm *lmi = (struct lm_idm *)ls->lm_data;
-	struct rd_idm *rdi = (struct rd_idm *)r->lm_data;
-	char **drive_path = NULL;
-	uint64_t timestamp;
-	int reset_vb = 0;
-	int rv, i;
-
-	if (!r->lm_init) {
-		rv = lm_add_resource_idm(ls, r);
-		if (rv < 0)
-			return rv;
-		r->lm_init = 1;
-	}
-
-	rdi->op.mode = to_idm_mode(ld_mode);
-	if (rv < 0) {
-		log_error("lock_idm invalid mode %d", ld_mode);
-		return -EINVAL;
-	}
-
-	log_debug("S %s R %s lock_idm", ls->name, r->name);
-
-	if (daemon_test) {
-		if (rdi->vb) {
-			vb_out->version = le16_to_cpu(rdi->vb->version);
-			vb_out->flags = le16_to_cpu(rdi->vb->flags);
-			vb_out->r_version = le32_to_cpu(rdi->vb->r_version);
-		}
-		return 0;
-	}
-
-	rdi->op.timeout = IDM_TIMEOUT;
-
-	/*
-	 * Generate the UUID string, for RT_VG, it only needs to generate
-	 * UUID string for VG level, for RT_LV, it needs to generate
-	 * UUID strings for both VG and LV levels.  At the end, these IDs
-	 * are used as identifier for IDM in drive firmware.
-	 */
-	if (r->type == LD_RT_VG || r->type == LD_RT_LV)
-		log_debug("S %s R %s VG uuid %s", ls->name, r->name, ls->vg_uuid);
-	if (r->type == LD_RT_LV)
-		log_debug("S %s R %s LV uuid %s", ls->name, r->name, lv_uuid);
-
-	memset(&rdi->id, 0x0, sizeof(struct idm_lock_id));
-	if (r->type == LD_RT_VG) {
-		uuid_read_format(rdi->id.vg_uuid, ls->vg_uuid);
-	} else if (r->type == LD_RT_LV) {
-		uuid_read_format(rdi->id.vg_uuid, ls->vg_uuid);
-		uuid_read_format(rdi->id.lv_uuid, lv_uuid);
-	}
-
-	/*
-	 * Establish the drive path list for lock, since different lock type
-	 * has different drive list; the GL lock uses the global pv list,
-	 * the VG lock uses the pv list spanned for the whole volume group,
-	 * the LV lock uses the pv list for the logical volume.
-	 */
-	switch (r->type) {
-	case LD_RT_GL:
-		drive_path = glb_lock_op.drives;
-		rdi->op.drive_num = glb_lock_op.drive_num;
-		break;
-	case LD_RT_VG:
-		drive_path = (char **)ls->pvs.path;
-		rdi->op.drive_num = ls->pvs.num;
-		break;
-	case LD_RT_LV:
-		drive_path = (char **)pvs->path;
-		rdi->op.drive_num = pvs->num;
-		break;
-	default:
-		break;
-	}
-
-	if (!drive_path) {
-		log_error("S %s R %s cannot find the valid drive path array",
-			  ls->name, r->name);
-		return -EINVAL;
-	}
-
-	if (rdi->op.drive_num >= ILM_DRIVE_MAX_NUM) {
-		log_error("S %s R %s exceeds limitation for drive path array",
-			  ls->name, r->name);
-		return -EINVAL;
-	}
-
-	for (i = 0; i < rdi->op.drive_num; i++)
-		rdi->op.drives[i] = drive_path[i];
-
-	log_debug("S %s R %s mode %d drive_num %d timeout %d",
-		  ls->name, r->name, rdi->op.mode,
-		  rdi->op.drive_num, rdi->op.timeout);
-
-	for (i = 0; i < rdi->op.drive_num; i++)
-		log_debug("S %s R %s drive path[%d] %s",
-			  ls->name, r->name, i, rdi->op.drives[i]);
-
-	rv = ilm_lock(lmi->sock, &rdi->id, &rdi->op);
-	if (rv < 0) {
-		log_debug("S %s R %s lock_idm acquire mode %d rv %d",
-			  ls->name, r->name, ld_mode, rv);
-		return -ELOCKIO;
-	}
-
-	if (rdi->vb) {
-		rv = ilm_read_lvb(lmi->sock, &rdi->id, (char *)&timestamp,
-				  sizeof(uint64_t));
-
-		/*
-		 * If fail to read value block, which might be caused by drive
-		 * failure, notify up layer to invalidate metadata.
-		 */
-		if (rv < 0) {
-			log_error("S %s R %s lock_idm get_lvb error %d",
-				  ls->name, r->name, rv);
-			reset_vb = 1;
-
-			/* Reset timestamp */
-			rdi->vb_timestamp = 0;
-
-		/*
-		 * If the cached timestamp mismatches with the stored value
-		 * in the IDM, this means another host has updated timestamp
-		 * for the new VB.  Let's reset VB and notify up layer to
-		 * invalidate metadata.
-		 */
-		} else if (rdi->vb_timestamp != timestamp) {
-			log_debug("S %s R %s lock_idm get lvb timestamp %lu:%lu",
-				  ls->name, r->name, rdi->vb_timestamp,
-				  timestamp);
-
-			rdi->vb_timestamp = timestamp;
-			reset_vb = 1;
-		}
-
-		if (reset_vb == 1) {
-			memset(rdi->vb, 0, sizeof(struct val_blk));
-			memset(vb_out, 0, sizeof(struct val_blk));
-
-			/*
-			 * The lock is still acquired, but the vb values has
-			 * been invalidated.
-			 */
-			rv = 0;
-			goto out;
-		}
-
-		/* Otherwise, copy the cached VB to up layer */
-		memcpy(vb_out, rdi->vb, sizeof(struct val_blk));
-	}
-
-out:
-	return rv;
-}
-
-int lm_convert_idm(struct lockspace *ls, struct resource *r,
-		   int ld_mode, uint32_t r_version)
-{
-	struct lm_idm *lmi = (struct lm_idm *)ls->lm_data;
-	struct rd_idm *rdi = (struct rd_idm *)r->lm_data;
-	int mode, rv;
-
-	if (rdi->vb && r_version && (r->mode == LD_LK_EX)) {
-		if (!rdi->vb->version) {
-			/* first time vb has been written */
-			rdi->vb->version = VAL_BLK_VERSION;
-		}
-		rdi->vb->r_version = r_version;
-
-		log_debug("S %s R %s convert_idm set r_version %u",
-			  ls->name, r->name, r_version);
-
-		lm_idm_update_vb_timestamp(&rdi->vb_timestamp);
-		log_debug("S %s R %s convert_idm vb %x %x %u timestamp %lu",
-			  ls->name, r->name, rdi->vb->version, rdi->vb->flags,
-			  rdi->vb->r_version, rdi->vb_timestamp);
-	}
-
-	mode = to_idm_mode(ld_mode);
-	if (mode < 0) {
-		log_error("S %s R %s convert_idm invalid mode %d",
-			  ls->name, r->name, ld_mode);
-		return -EINVAL;
-	}
-
-	log_debug("S %s R %s convert_idm", ls->name, r->name);
-
-	if (daemon_test)
-		return 0;
-
-	if (rdi->vb && r_version && (r->mode == LD_LK_EX)) {
-		rv = ilm_write_lvb(lmi->sock, &rdi->id,
-				   (char *)rdi->vb_timestamp, sizeof(uint64_t));
-		if (rv < 0) {
-			log_error("S %s R %s convert_idm write lvb error %d",
-				  ls->name, r->name, rv);
-			return -ELMERR;
-		}
-	}
-
-	rv = ilm_convert(lmi->sock, &rdi->id, mode);
-	if (rv < 0)
-		log_error("S %s R %s convert_idm convert error %d",
-			  ls->name, r->name, rv);
-
-	return rv;
-}
-
-int lm_unlock_idm(struct lockspace *ls, struct resource *r,
-		  uint32_t r_version, uint32_t lmu_flags)
-{
-	struct lm_idm *lmi = (struct lm_idm *)ls->lm_data;
-	struct rd_idm *rdi = (struct rd_idm *)r->lm_data;
-	int rv;
-
-	if (rdi->vb && r_version && (r->mode == LD_LK_EX)) {
-		if (!rdi->vb->version) {
-			/* first time vb has been written */
-			rdi->vb->version = VAL_BLK_VERSION;
-		}
-		if (r_version)
-			rdi->vb->r_version = r_version;
-
-		lm_idm_update_vb_timestamp(&rdi->vb_timestamp);
-		log_debug("S %s R %s unlock_idm vb %x %x %u timestamp %lu",
-			  ls->name, r->name, rdi->vb->version, rdi->vb->flags,
-			  rdi->vb->r_version, rdi->vb_timestamp);
-	}
-
-	log_debug("S %s R %s unlock_idm", ls->name, r->name);
-
-	if (daemon_test)
-		return 0;
-
-	if (rdi->vb && r_version && (r->mode == LD_LK_EX)) {
-		rv = ilm_write_lvb(lmi->sock, &rdi->id,
-				   (char *)&rdi->vb_timestamp, sizeof(uint64_t));
-		if (rv < 0) {
-			log_error("S %s R %s unlock_idm set_lvb error %d",
-				  ls->name, r->name, rv);
-			return -ELMERR;
-		}
-	}
-
-	rv = ilm_unlock(lmi->sock, &rdi->id);
-	if (rv < 0)
-		log_error("S %s R %s unlock_idm error %d", ls->name, r->name, rv);
-
-	return rv;
-}
-
-int lm_hosts_idm(struct lockspace *ls, int notify)
-{
-	struct resource *r;
-	struct lm_idm *lmi = (struct lm_idm *)ls->lm_data;
-	struct rd_idm *rdi;
-	int count, self, found_others = 0;
-	int rv;
-
-	list_for_each_entry(r, &ls->resources, list) {
-		if (!r->lm_init)
-			continue;
-
-		rdi = (struct rd_idm *)r->lm_data;
-
-		rv = ilm_get_host_count(lmi->sock, &rdi->id, &rdi->op,
-					&count, &self);
-		if (rv < 0) {
-			log_error("S %s lm_hosts_idm error %d", ls->name, rv);
-			return rv;
-		}
-
-		/* Fixup: need to reduce self count */
-		if (count > found_others)
-			found_others = count;
-	}
-
-	return found_others;
-}
-
-int lm_get_lockspaces_idm(struct list_head *ls_rejoin)
-{
-	/* TODO: Need to add support for adoption. */
-	return -1;
-}
-
-int lm_is_running_idm(void)
-{
-	int sock, rv;
-
-	if (daemon_test)
-		return gl_use_idm;
-
-	rv = ilm_connect(&sock);
-	if (rv < 0) {
-		log_error("Fail to connect seagate IDM lock manager %d", rv);
-		return 0;
-	}
-
-	ilm_disconnect(sock);
-	return 1;
-}
--- a/daemons/lvmlockd/lvmlockd-internal.h
+++ b/daemons/lvmlockd/lvmlockd-internal.h
@ -11,8 +11,6 @@
 #ifndef _LVM_LVMLOCKD_INTERNAL_H
 #define _LVM_LVMLOCKD_INTERNAL_H

-#include "base/memory/container_of.h"
-
 #define MAX_NAME 64
 #define MAX_ARGS 64

@ -20,7 +18,6 @@
 #define R_NAME_GL          "GLLK"
 #define R_NAME_VG          "VGLK"
 #define S_NAME_GL_DLM      "lvm_global"
-#define S_NAME_GL_IDM      "lvm_global"
 #define LVM_LS_PREFIX      "lvm_"           /* ls name is prefix + vg_name */
 /* global lockspace name for sanlock is a vg name */

@ -30,7 +27,6 @@ enum {
 	LD_LM_UNUSED = 1, /* place holder so values match lib/locking/lvmlockd.h */
 	LD_LM_DLM = 2,
 	LD_LM_SANLOCK = 3,
-	LD_LM_IDM = 4,
 };

 /* operation types */
@ -120,11 +116,6 @@ struct client {
 */
 #define DEFAULT_MAX_RETRIES 4

-struct pvs {
-	char **path;
-	int num;
-};
-
 struct action {
 	struct list_head list;
 	uint32_t client_id;
@ -147,7 +138,6 @@ struct action {
 	char vg_args[MAX_ARGS+1];
 	char lv_args[MAX_ARGS+1];
 	char vg_sysid[MAX_NAME+1];
-	struct pvs pvs;			/* PV list for idm */
 };

 struct resource {
@ -155,7 +145,6 @@ struct resource {
 	char name[MAX_NAME+1];		/* vg name or lv name */
 	int8_t type;			/* resource type LD_RT_ */
 	int8_t mode;
-	int8_t adopt_mode;
 	unsigned int sh_count;		/* number of sh locks on locks list */
 	uint32_t version;
 	uint32_t last_client_id;	/* last client_id to lock or unlock resource */
@ -166,7 +155,7 @@ struct resource {
 	struct list_head locks;
 	struct list_head actions;
 	char lv_args[MAX_ARGS+1];
-	char lm_data[];			/* lock manager specific data */
+	char lm_data[0];		/* lock manager specific data */
 };

 #define LD_LF_PERSISTENT 0x00000001
@ -192,7 +181,6 @@ struct lockspace {
 	uint64_t free_lock_offset;	/* for sanlock, start search for free lock here */
 	int free_lock_sector_size;	/* for sanlock */
 	int free_lock_align_size;	/* for sanlock */
-	struct pvs pvs;			/* for idm: PV list */

 	uint32_t start_client_id;	/* client_id that started the lockspace */
 	pthread_t thread;		/* makes synchronous lock requests */
@ -228,6 +216,10 @@ struct val_blk {
 /* lm_unlock flags */
 #define LMUF_FREE_VG 0x00000001

+#define container_of(ptr, type, member) ({                      \
+	const typeof( ((type *)0)->member ) *__mptr = (ptr);    \
+	(type *)( (char *)__mptr - offsetof(type,member) );})
+
 static inline void INIT_LIST_HEAD(struct list_head *list)
 {
 	list->next = list;
@ -334,13 +326,10 @@ static inline int list_empty(const struct list_head *head)
 EXTERN int gl_type_static;
 EXTERN int gl_use_dlm;
 EXTERN int gl_use_sanlock;
-EXTERN int gl_use_idm;
 EXTERN int gl_vg_removed;
 EXTERN char gl_lsname_dlm[MAX_NAME+1];
 EXTERN char gl_lsname_sanlock[MAX_NAME+1];
-EXTERN char gl_lsname_idm[MAX_NAME+1];
 EXTERN int global_dlm_lockspace_exists;
-EXTERN int global_idm_lockspace_exists;

 EXTERN int daemon_test; /* run as much as possible without a live lock manager */
 EXTERN int daemon_debug;
@ -631,102 +620,4 @@ static inline int lm_support_sanlock(void)

 #endif /* sanlock support */

-#ifdef LOCKDIDM_SUPPORT
-
-int lm_data_size_idm(void);
-int lm_init_vg_idm(char *ls_name, char *vg_name, uint32_t flags, char *vg_args);
-int lm_prepare_lockspace_idm(struct lockspace *ls);
-int lm_add_lockspace_idm(struct lockspace *ls, int adopt);
-int lm_rem_lockspace_idm(struct lockspace *ls, int free_vg);
-int lm_lock_idm(struct lockspace *ls, struct resource *r, int ld_mode,
-		struct val_blk *vb_out, char *lv_uuid, struct pvs *pvs,
-		int adopt);
-int lm_convert_idm(struct lockspace *ls, struct resource *r,
-		   int ld_mode, uint32_t r_version);
-int lm_unlock_idm(struct lockspace *ls, struct resource *r,
-		  uint32_t r_version, uint32_t lmu_flags);
-int lm_hosts_idm(struct lockspace *ls, int notify);
-int lm_get_lockspaces_idm(struct list_head *ls_rejoin);
-int lm_is_running_idm(void);
-int lm_rem_resource_idm(struct lockspace *ls, struct resource *r);
-
-static inline int lm_support_idm(void)
-{
-	return 1;
-}
-
-#else
-
-static inline int lm_data_size_idm(void)
-{
-	return -1;
-}
-
-static inline int lm_init_vg_idm(char *ls_name, char *vg_name, uint32_t flags,
-			  char *vg_args)
-{
-	return -1;
-}
-
-static inline int lm_prepare_lockspace_idm(struct lockspace *ls)
-{
-	return -1;
-}
-
-static inline int lm_add_lockspace_idm(struct lockspace *ls, int adopt)
-{
-	return -1;
-}
-
-static inline int lm_rem_lockspace_idm(struct lockspace *ls, int free_vg)
-{
-	return -1;
-}
-
-static inline int lm_lock_idm(struct lockspace *ls, struct resource *r, int ld_mode,
-		       struct val_blk *vb_out, char *lv_uuid, struct pvs *pvs,
-		       int adopt)
-{
-	return -1;
-}
-
-static inline int lm_convert_idm(struct lockspace *ls, struct resource *r,
-			  int ld_mode, uint32_t r_version)
-{
-	return -1;
-}
-
-static inline int lm_unlock_idm(struct lockspace *ls, struct resource *r,
-			 uint32_t r_version, uint32_t lmu_flags)
-{
-	return -1;
-}
-
-static inline int lm_hosts_idm(struct lockspace *ls, int notify)
-{
-	return -1;
-}
-
-static inline int lm_get_lockspaces_idm(struct list_head *ls_rejoin)
-{
-	return -1;
-}
-
-static inline int lm_is_running_idm(void)
-{
-	return 0;
-}
-
-static inline int lm_rem_resource_idm(struct lockspace *ls, struct resource *r)
-{
-	return -1;
-}
-
-static inline int lm_support_idm(void)
-{
-	return 0;
-}
-
-#endif /* Seagate IDM support */
-
 #endif	/* _LVM_LVMLOCKD_INTERNAL_H */
--- a/daemons/lvmlockd/lvmlockd-sanlock.c
+++ b/daemons/lvmlockd/lvmlockd-sanlock.c
@ -227,17 +227,6 @@ int lm_data_size_sanlock(void)

 static uint64_t daemon_test_lv_count;

-/*
- * Copy a null-terminated string "str" into a fixed
- * size (SANLK_NAME_LEN) struct field "buf" which is
- * not null terminated.
- */
-static void strcpy_name_len(char *buf, char *str, int len)
-{
-	/* coverity[buffer_size_warning] */
-	strncpy(buf, str, SANLK_NAME_LEN);
-}
-
 static int lock_lv_name_from_args(char *vg_args, char *lock_lv_name)
 {
 	return last_string_from_args(vg_args, lock_lv_name);
@ -511,15 +500,13 @@ static int get_sizes_lockspace(char *path, int *sector_size, int *align_size)
 * version and lv name, and returns the real lock_args in vg_args.
 */

-#define MAX_VERSION 16
-
 int lm_init_vg_sanlock(char *ls_name, char *vg_name, uint32_t flags, char *vg_args)
 {
 	struct sanlk_lockspace ss;
 	struct sanlk_resourced rd;
 	struct sanlk_disk disk;
 	char lock_lv_name[MAX_ARGS+1];
-	char lock_args_version[MAX_VERSION+1];
+	char lock_args_version[MAX_ARGS+1];
 	const char *gl_name = NULL;
 	uint32_t daemon_version;
 	uint32_t daemon_proto;
@ -539,7 +526,7 @@ int lm_init_vg_sanlock(char *ls_name, char *vg_name, uint32_t flags, char *vg_ar
 		return -EARGS;
 	}

-	snprintf(lock_args_version, MAX_VERSION, "%u.%u.%u",
+	snprintf(lock_args_version, MAX_ARGS, "%u.%u.%u",
 		 VG_LOCK_ARGS_MAJOR, VG_LOCK_ARGS_MINOR, VG_LOCK_ARGS_PATCH);

 	/* see comment above about input vg_args being only lock_lv_name */
@ -556,9 +543,7 @@ int lm_init_vg_sanlock(char *ls_name, char *vg_name, uint32_t flags, char *vg_ar
 	if (daemon_test) {
 		if (!gl_lsname_sanlock[0])
 			strncpy(gl_lsname_sanlock, ls_name, MAX_NAME);
-		rv = snprintf(vg_args, MAX_ARGS, "%s:%s", lock_args_version, lock_lv_name);
-		if (rv >= MAX_ARGS)
-			log_debug("init_vg_san vg_args may be too long %d %s", rv, vg_args);
+		snprintf(vg_args, MAX_ARGS, "%s:%s", lock_args_version, lock_lv_name);
 		return 0;
 	}

@ -585,7 +570,7 @@ int lm_init_vg_sanlock(char *ls_name, char *vg_name, uint32_t flags, char *vg_ar
 		}
 	}

-	strcpy_name_len(ss.name, ls_name, SANLK_NAME_LEN);
+	strncpy(ss.name, ls_name, SANLK_NAME_LEN);
 	memcpy(ss.host_id_disk.path, disk.path, SANLK_PATH_LEN);
 	ss.host_id_disk.offset = 0;
 	ss.flags = (sector_size == 4096) ? (SANLK_LSF_SECTOR4K | SANLK_LSF_ALIGN8M) :
@ -618,7 +603,7 @@ int lm_init_vg_sanlock(char *ls_name, char *vg_name, uint32_t flags, char *vg_ar
 		gl_name = R_NAME_GL;

 	memcpy(rd.rs.lockspace_name, ss.name, SANLK_NAME_LEN);
-	strcpy_name_len(rd.rs.name, (char *)gl_name, SANLK_NAME_LEN);
+	strncpy(rd.rs.name, gl_name, SANLK_NAME_LEN);
 	memcpy(rd.rs.disks[0].path, disk.path, SANLK_PATH_LEN);
 	rd.rs.disks[0].offset = align_size * GL_LOCK_BEGIN;
 	rd.rs.num_disks = 1;
@ -633,7 +618,7 @@ int lm_init_vg_sanlock(char *ls_name, char *vg_name, uint32_t flags, char *vg_ar
 	}

 	memcpy(rd.rs.lockspace_name, ss.name, SANLK_NAME_LEN);
-	strcpy_name_len(rd.rs.name, (char *)R_NAME_VG, SANLK_NAME_LEN);
+	strncpy(rd.rs.name, R_NAME_VG, SANLK_NAME_LEN);
 	memcpy(rd.rs.disks[0].path, disk.path, SANLK_PATH_LEN);
 	rd.rs.disks[0].offset = align_size * VG_LOCK_BEGIN;
 	rd.rs.num_disks = 1;
@ -650,9 +635,7 @@ int lm_init_vg_sanlock(char *ls_name, char *vg_name, uint32_t flags, char *vg_ar
 	if (!strcmp(gl_name, R_NAME_GL))
 		strncpy(gl_lsname_sanlock, ls_name, MAX_NAME);
 
-	rv = snprintf(vg_args, MAX_ARGS, "%s:%s", lock_args_version, lock_lv_name);
-	if (rv >= MAX_ARGS)
-		log_debug("init_vg_san vg_args may be too long %d %s", rv, vg_args);
+	snprintf(vg_args, MAX_ARGS, "%s:%s", lock_args_version, lock_lv_name);

 	log_debug("S %s init_vg_san done vg_args %s", ls_name, vg_args);

@ -667,8 +650,8 @@ int lm_init_vg_sanlock(char *ls_name, char *vg_name, uint32_t flags, char *vg_ar
 	rd.rs.flags = (sector_size == 4096) ? (SANLK_RES_SECTOR4K | SANLK_RES_ALIGN8M) :
 					      (SANLK_RES_SECTOR512 | SANLK_RES_ALIGN1M);
 	memcpy(rd.rs.disks[0].path, disk.path, SANLK_PATH_LEN);
-	strcpy_name_len(rd.rs.lockspace_name, ls_name, SANLK_NAME_LEN);
-	strcpy_name_len(rd.rs.name, (char *)"#unused", SANLK_NAME_LEN);
+	strncpy(rd.rs.lockspace_name, ls_name, SANLK_NAME_LEN);
+	strcpy(rd.rs.name, "#unused");

 	offset = align_size * LV_LOCK_BEGIN;

@ -709,7 +692,7 @@ int lm_init_lv_sanlock(char *ls_name, char *vg_name, char *lv_name,
 {
 	struct sanlk_resourced rd;
 	char lock_lv_name[MAX_ARGS+1];
-	char lock_args_version[MAX_VERSION+1];
+	char lock_args_version[MAX_ARGS+1];
 	uint64_t offset;
 	int rv;

@ -724,7 +707,7 @@ int lm_init_lv_sanlock(char *ls_name, char *vg_name, char *lv_name,
 		return rv;
 	}

-	snprintf(lock_args_version, MAX_VERSION, "%u.%u.%u",
+	snprintf(lock_args_version, MAX_ARGS, "%u.%u.%u",
 		 LV_LOCK_ARGS_MAJOR, LV_LOCK_ARGS_MINOR, LV_LOCK_ARGS_PATCH);

 	if (daemon_test) {
@ -736,7 +719,7 @@ int lm_init_lv_sanlock(char *ls_name, char *vg_name, char *lv_name,
 		return 0;
 	}

-	strcpy_name_len(rd.rs.lockspace_name, ls_name, SANLK_NAME_LEN);
+	strncpy(rd.rs.lockspace_name, ls_name, SANLK_NAME_LEN);
 	rd.rs.num_disks = 1;
 	if ((rv = build_dm_path(rd.rs.disks[0].path, SANLK_PATH_LEN, vg_name, lock_lv_name)))
 		return rv;
@ -811,7 +794,7 @@ int lm_init_lv_sanlock(char *ls_name, char *vg_name, char *lv_name,
 			log_debug("S %s init_lv_san %s found unused area at %llu",
 				  ls_name, lv_name, (unsigned long long)offset);

-			strcpy_name_len(rd.rs.name, lv_name, SANLK_NAME_LEN);
+			strncpy(rd.rs.name, lv_name, SANLK_NAME_LEN);
 			rd.rs.flags = (sector_size == 4096) ? (SANLK_RES_SECTOR4K | SANLK_RES_ALIGN8M) :
 							      (SANLK_RES_SECTOR512 | SANLK_RES_ALIGN1M);

@ -910,7 +893,7 @@ int lm_rename_vg_sanlock(char *ls_name, char *vg_name, uint32_t flags, char *vg_
 	if (!sector_size || !align_size)
 		return -1;

-	strcpy_name_len(ss.name, ls_name, SANLK_NAME_LEN);
+	strncpy(ss.name, ls_name, SANLK_NAME_LEN);

 	rv = sanlock_write_lockspace(&ss, 0, 0, sanlock_io_timeout);
 	if (rv < 0) {
@ -935,7 +918,7 @@ int lm_rename_vg_sanlock(char *ls_name, char *vg_name, uint32_t flags, char *vg_
 		return rv;
 	}

-	memcpy(rd.rs.lockspace_name, ss.name, SANLK_NAME_LEN);
+	strncpy(rd.rs.lockspace_name, ss.name, SANLK_NAME_LEN);

 	rv = sanlock_write_resource(&rd.rs, 0, 0, 0);
 	if (rv < 0) {
@ -960,7 +943,7 @@ int lm_rename_vg_sanlock(char *ls_name, char *vg_name, uint32_t flags, char *vg_
 		return rv;
 	}

-	memcpy(rd.rs.lockspace_name, ss.name, SANLK_NAME_LEN);
+	strncpy(rd.rs.lockspace_name, ss.name, SANLK_NAME_LEN);

 	rv = sanlock_write_resource(&rd.rs, 0, 0, 0);
 	if (rv < 0) {
@ -994,7 +977,7 @@ int lm_rename_vg_sanlock(char *ls_name, char *vg_name, uint32_t flags, char *vg_
 			break;
 		}

-		memcpy(rd.rs.lockspace_name, ss.name, SANLK_NAME_LEN);
+		strncpy(rd.rs.lockspace_name, ss.name, SANLK_NAME_LEN);

 		rv = sanlock_write_resource(&rd.rs, 0, 0, 0);
 		if (rv) {
@ -1020,7 +1003,7 @@ int lm_free_lv_sanlock(struct lockspace *ls, struct resource *r)
 	if (daemon_test)
 		return 0;

-	strcpy_name_len(rs->name, (char *)"#unused", SANLK_NAME_LEN);
+	strcpy(rs->name, "#unused");

 	rv = sanlock_write_resource(rs, 0, 0, 0);
 	if (rv < 0) {
@ -1054,14 +1037,14 @@ int lm_ex_disable_gl_sanlock(struct lockspace *ls)
 	memset(&rd1, 0, sizeof(rd1));
 	memset(&rd2, 0, sizeof(rd2));

-	strcpy_name_len(rd1.rs.lockspace_name, ls->name, SANLK_NAME_LEN);
-	strcpy_name_len(rd1.rs.name, (char *)R_NAME_GL, SANLK_NAME_LEN);
+	strncpy(rd1.rs.lockspace_name, ls->name, SANLK_NAME_LEN);
+	strncpy(rd1.rs.name, R_NAME_GL, SANLK_NAME_LEN);

-	strcpy_name_len(rd2.rs.lockspace_name, ls->name, SANLK_NAME_LEN);
-	strcpy_name_len(rd2.rs.name, (char *)R_NAME_GL_DISABLED, SANLK_NAME_LEN);
+	strncpy(rd2.rs.lockspace_name, ls->name, SANLK_NAME_LEN);
+	strncpy(rd2.rs.name, R_NAME_GL_DISABLED, SANLK_NAME_LEN);

 	rd1.rs.num_disks = 1;
-	memcpy(rd1.rs.disks[0].path, lms->ss.host_id_disk.path, SANLK_PATH_LEN-1);
+	strncpy(rd1.rs.disks[0].path, lms->ss.host_id_disk.path, SANLK_PATH_LEN-1);
 	rd1.rs.disks[0].offset = lms->align_size * GL_LOCK_BEGIN;
 	
 	rd1.rs.flags = (lms->sector_size == 4096) ? (SANLK_RES_SECTOR4K | SANLK_RES_ALIGN8M) :
@ -1123,11 +1106,11 @@ int lm_able_gl_sanlock(struct lockspace *ls, int enable)

 	memset(&rd, 0, sizeof(rd));

-	strcpy_name_len(rd.rs.lockspace_name, ls->name, SANLK_NAME_LEN);
-	strcpy_name_len(rd.rs.name, (char *)gl_name, SANLK_NAME_LEN);
+	strncpy(rd.rs.lockspace_name, ls->name, SANLK_NAME_LEN);
+	strncpy(rd.rs.name, gl_name, SANLK_NAME_LEN);

 	rd.rs.num_disks = 1;
-	memcpy(rd.rs.disks[0].path, lms->ss.host_id_disk.path, SANLK_PATH_LEN-1);
+	strncpy(rd.rs.disks[0].path, lms->ss.host_id_disk.path, SANLK_PATH_LEN-1);
 	rd.rs.disks[0].offset = lms->align_size * GL_LOCK_BEGIN;
 	rd.rs.flags = (lms->sector_size == 4096) ? (SANLK_RES_SECTOR4K | SANLK_RES_ALIGN8M) :
 						   (SANLK_RES_SECTOR512 | SANLK_RES_ALIGN1M);
@ -1164,12 +1147,12 @@ static int gl_is_enabled(struct lockspace *ls, struct lm_sanlock *lms)

 	memset(&rd, 0, sizeof(rd));

-	strcpy_name_len(rd.rs.lockspace_name, ls->name, SANLK_NAME_LEN);
+	strncpy(rd.rs.lockspace_name, ls->name, SANLK_NAME_LEN);

 	/* leave rs.name empty, it is what we're checking */

 	rd.rs.num_disks = 1;
-	memcpy(rd.rs.disks[0].path, lms->ss.host_id_disk.path, SANLK_PATH_LEN-1);
+	strncpy(rd.rs.disks[0].path, lms->ss.host_id_disk.path, SANLK_PATH_LEN-1);

 	offset = lms->align_size * GL_LOCK_BEGIN;
 	rd.rs.disks[0].offset = offset;
@ -1235,9 +1218,9 @@ int lm_find_free_lock_sanlock(struct lockspace *ls, uint64_t *free_offset, int *

 	memset(&rd, 0, sizeof(rd));

-	strcpy_name_len(rd.rs.lockspace_name, ls->name, SANLK_NAME_LEN);
+	strncpy(rd.rs.lockspace_name, ls->name, SANLK_NAME_LEN);
 	rd.rs.num_disks = 1;
-	memcpy(rd.rs.disks[0].path, lms->ss.host_id_disk.path, SANLK_PATH_LEN-1);
+	strncpy(rd.rs.disks[0].path, lms->ss.host_id_disk.path, SANLK_PATH_LEN-1);
 	rd.rs.flags = (lms->sector_size == 4096) ? (SANLK_RES_SECTOR4K | SANLK_RES_ALIGN8M) :
 						   (SANLK_RES_SECTOR512 | SANLK_RES_ALIGN1M);

@ -1422,7 +1405,7 @@ int lm_prepare_lockspace_sanlock(struct lockspace *ls)
 	memcpy(lms->ss.name, lsname, SANLK_NAME_LEN);
 	lms->ss.host_id_disk.offset = 0;
 	lms->ss.host_id = ls->host_id;
-	memcpy(lms->ss.host_id_disk.path, disk_path, SANLK_PATH_LEN-1);
+	strncpy(lms->ss.host_id_disk.path, disk_path, SANLK_PATH_LEN-1);

 	if (daemon_test) {
 		if (!gl_lsname_sanlock[0]) {
@ -1514,7 +1497,8 @@ out:
 fail:
 	if (lms && lms->sock)
 		close(lms->sock);
-	free(lms);
+	if (lms)
+		free(lms);
 	return ret;
 }

@ -1588,7 +1572,7 @@ int lm_rem_lockspace_sanlock(struct lockspace *ls, int free_vg)
 		 * This shouldn't be generally necessary, but there may some races
 		 * between nodes starting and removing a vg which this could help.
 		 */
-		strcpy_name_len(lms->ss.name, (char *)"#unused", SANLK_NAME_LEN);
+		strncpy(lms->ss.name, "#unused", SANLK_NAME_LEN);

 		rv = sanlock_write_lockspace(&lms->ss, 0, 0, sanlock_io_timeout);
 		if (rv < 0) {
@ -1616,8 +1600,8 @@ static int lm_add_resource_sanlock(struct lockspace *ls, struct resource *r)
 	struct lm_sanlock *lms = (struct lm_sanlock *)ls->lm_data;
 	struct rd_sanlock *rds = (struct rd_sanlock *)r->lm_data;

-	strcpy_name_len(rds->rs.lockspace_name, ls->name, SANLK_NAME_LEN);
-	strcpy_name_len(rds->rs.name, r->name, SANLK_NAME_LEN);
+	strncpy(rds->rs.lockspace_name, ls->name, SANLK_NAME_LEN);
+	strncpy(rds->rs.name, r->name, SANLK_NAME_LEN);
 	rds->rs.num_disks = 1;
 	memcpy(rds->rs.disks[0].path, lms->ss.host_id_disk.path, SANLK_PATH_LEN);
 	rds->rs.flags = (lms->sector_size == 4096) ? (SANLK_RES_SECTOR4K | SANLK_RES_ALIGN8M) : (SANLK_RES_SECTOR512 | SANLK_RES_ALIGN1M);
@ -1644,7 +1628,8 @@ int lm_rem_resource_sanlock(struct lockspace *ls, struct resource *r)

 	/* FIXME: assert r->mode == UN or unlock if it's not? */

-	free(rds->vb);
+	if (rds->vb)
+		free(rds->vb);

 	memset(rds, 0, sizeof(struct rd_sanlock));
 	r->lm_init = 0;
@ -1660,7 +1645,7 @@ int lm_lock_sanlock(struct lockspace *ls, struct resource *r, int ld_mode,
 	struct sanlk_options opt;
 	uint64_t lock_lv_offset;
 	uint32_t flags = 0;
-	struct val_blk vb = { 0 };
+	struct val_blk vb;
 	int added = 0;
 	int rv;

@ -2046,7 +2031,7 @@ static int release_rename(struct lockspace *ls, struct resource *r)
 	res1 = (struct sanlk_resource *)&rd1;
 	res2 = (struct sanlk_resource *)&rd2;

-	strcpy_name_len(res2->name, (char *)"invalid_removed", SANLK_NAME_LEN);
+	strcpy(res2->name, "invalid_removed");

 	res_args[0] = res1;
 	res_args[1] = res2;
@ -2239,8 +2224,8 @@ int lm_get_lockspaces_sanlock(struct list_head *ls_rejoin)

 		ls->lm_type = LD_LM_SANLOCK;
 		ls->host_id = ss->host_id;
-		memcpy(ls->name, ss->name, SANLK_NAME_LEN);
-		memcpy(ls->vg_name, ss->name + strlen(LVM_LS_PREFIX), SANLK_NAME_LEN - strlen(LVM_LS_PREFIX));
+		strncpy(ls->name, ss->name, MAX_NAME);
+		strncpy(ls->vg_name, ss->name + strlen(LVM_LS_PREFIX), MAX_NAME);
 		list_add_tail(&ls->list, ls_rejoin);

 		ss++;
--- a/daemons/lvmpolld/Makefile.in
+++ b/daemons/lvmpolld/Makefile.in
@ -19,11 +19,12 @@ SOURCES = lvmpolld-core.c lvmpolld-data-utils.c lvmpolld-cmd-utils.c

 TARGETS = lvmpolld

-CFLOW_SOURCES = $(addprefix $(srcdir)/, $(SOURCES))
-CFLOW_TARGET := $(TARGETS)
-
 .PHONY: install_lvmpolld

+CFLOW_LIST = $(SOURCES)
+CFLOW_LIST_TARGET = $(LIB_NAME).cflow
+CFLOW_TARGET = lvmpolld
+
 include $(top_builddir)/make.tmpl

 CFLAGS += $(EXTRA_EXEC_CFLAGS)
--- a/daemons/lvmpolld/lvmpolld-cmd-utils.c
+++ b/daemons/lvmpolld/lvmpolld-cmd-utils.c
@ -92,12 +92,6 @@ const char **cmdargv_ctr(const struct lvmpolld_lv *pdlv, const char *lvm_binary,
 	if (!add_to_cmd_arr(&cmd_argv, "-An", &i))
 		goto err;

-	if (pdlv->devicesfile) {
-		if (!add_to_cmd_arr(&cmd_argv, "--devicesfile", &i) ||
-		    !add_to_cmd_arr(&cmd_argv, pdlv->devicesfile, &i))
-			goto err;
-	}
-
 	/* terminating NULL */
 	if (!add_to_cmd_arr(&cmd_argv, NULL, &i))
 		goto err;
--- a/daemons/lvmpolld/lvmpolld-core.c
+++ b/daemons/lvmpolld/lvmpolld-core.c
@ -149,7 +149,7 @@ static void _lvmpolld_global_unlock(struct lvmpolld_state *ls)
 static int _fini(struct daemon_state *s)
 {
 	int done;
-	const struct timespec t = { .tv_nsec = 10000000 }; /* .01 sec */
+	const struct timespec t = { .tv_nsec = 250000000 }; /* .25 sec */
 	struct lvmpolld_state *ls = s->private;

 	DEBUGLOG(s, "fini");
@ -236,7 +236,9 @@ static int poll_for_output(struct lvmpolld_lv *pdlv, struct lvmpolld_thread_data
 	}

 	while (1) {
-		r = poll(fds, 2, pdlv_get_timeout(pdlv) * 1000);
+		do {
+			r = poll(fds, 2, pdlv_get_timeout(pdlv) * 1000);
+		} while (r < 0 && errno == EINTR);

 		DEBUGLOG(pdlv->ls, "%s: %s %d", PD_LOG_PREFIX, "poll() returned", r);
 		if (r < 0) {
@ -372,7 +374,7 @@ static void debug_print(struct lvmpolld_state *ls, const char * const* ptr)

 static void *fork_and_poll(void *args)
 {
-	int outfd, errfd, state = 0;
+	int outfd, errfd, state;
 	struct lvmpolld_thread_data *data;
 	pid_t r;

@ -553,15 +555,14 @@ static struct lvmpolld_lv *construct_pdlv(request req, struct lvmpolld_state *ls
 				     const char *interval, const char *id,
 				     const char *vgname, const char *lvname,
 				     const char *sysdir, enum poll_type type,
-				     unsigned abort_polling, unsigned uinterval,
-				     const char *devicesfile)
+				     unsigned abort_polling, unsigned uinterval)
 {
 	const char **cmdargv, **cmdenvp;
 	struct lvmpolld_lv *pdlv;
 	unsigned handle_missing_pvs = daemon_request_int(req, LVMPD_PARM_HANDLE_MISSING_PVS, 0);

 	pdlv = pdlv_create(ls, id, vgname, lvname, sysdir, type,
-			   interval, uinterval, pdst, devicesfile);
+			   interval, uinterval, pdst);

 	if (!pdlv) {
 		ERROR(ls, "%s: %s", PD_LOG_PREFIX, "failed to create internal LV data structure.");
@ -620,7 +621,6 @@ static response poll_init(client_handle h, struct lvmpolld_state *ls, request re
 	const char *lvname = daemon_request_str(req, LVMPD_PARM_LVNAME, NULL);
 	const char *vgname = daemon_request_str(req, LVMPD_PARM_VGNAME, NULL);
 	const char *sysdir = daemon_request_str(req, LVMPD_PARM_SYSDIR, NULL);
-	const char *devicesfile = daemon_request_str(req, LVMPD_PARM_DEVICESFILE, NULL);
 	unsigned abort_polling = daemon_request_int(req, LVMPD_PARM_ABORT, 0);

 	assert(type < POLL_TYPE_MAX);
@ -680,7 +680,7 @@ static response poll_init(client_handle h, struct lvmpolld_state *ls, request re
 		pdlv->init_rq_count++; /* safe. protected by store lock */
 	} else {
 		pdlv = construct_pdlv(req, ls, pdst, interval, id, vgname,
-				      lvname, sysdir, type, abort_polling, 2 * uinterval, devicesfile);
+				      lvname, sysdir, type, abort_polling, 2 * uinterval);
 		if (!pdlv) {
 			pdst_unlock(pdst);
 			free(id);
@ -915,7 +915,7 @@ int main(int argc, char *argv[])
 	int option_index = 0;
 	int client = 0, server = 0;
 	unsigned action = ACTION_MAX;
-	struct timespec timeout;
+	struct timeval timeout;
 	daemon_idle di = { .ptimeout = &timeout };
 	struct lvmpolld_state ls = { .log_config = "" };
 	daemon_state s = {
--- a/daemons/lvmpolld/lvmpolld-data-utils.c
+++ b/daemons/lvmpolld/lvmpolld-data-utils.c
@ -93,13 +93,11 @@ struct lvmpolld_lv *pdlv_create(struct lvmpolld_state *ls, const char *id,
 			   const char *vgname, const char *lvname,
 			   const char *sysdir, enum poll_type type,
 			   const char *sinterval, unsigned pdtimeout,
-			   struct lvmpolld_store *pdst,
-			   const char *devicesfile)
+			   struct lvmpolld_store *pdst)
 {
 	char *lvmpolld_id = strdup(id), /* copy */
 	     *full_lvname = _construct_full_lvname(vgname, lvname), /* copy */
 	     *lvm_system_dir_env = _construct_lvm_system_dir_env(sysdir); /* copy */
-	char *devicesfile_dup = devicesfile ? strdup(devicesfile) : NULL;

 	struct lvmpolld_lv tmp = {
 		.ls = ls,
@ -107,7 +105,6 @@ struct lvmpolld_lv *pdlv_create(struct lvmpolld_state *ls, const char *id,
 		.lvmpolld_id = lvmpolld_id,
 		.lvid = _get_lvid(lvmpolld_id, sysdir),
 		.lvname = full_lvname,
-		.devicesfile = devicesfile_dup,
 		.lvm_system_dir_env = lvm_system_dir_env,
 		.sinterval = strdup(sinterval), /* copy */
 		.pdtimeout = pdtimeout < MIN_POLLING_TIMEOUT ? MIN_POLLING_TIMEOUT : pdtimeout,
@ -127,7 +124,6 @@ struct lvmpolld_lv *pdlv_create(struct lvmpolld_state *ls, const char *id,
 	return pdlv;

 err:
-	free((void *)devicesfile_dup);
 	free((void *)full_lvname);
 	free((void *)lvmpolld_id);
 	free((void *)lvm_system_dir_env);
@ -140,7 +136,6 @@ err:
 void pdlv_destroy(struct lvmpolld_lv *pdlv)
 {
 	free((void *)pdlv->lvmpolld_id);
-	free((void *)pdlv->devicesfile);
 	free((void *)pdlv->lvname);
 	free((void *)pdlv->sinterval);
 	free((void *)pdlv->lvm_system_dir_env);
--- a/daemons/lvmpolld/lvmpolld-data-utils.h
+++ b/daemons/lvmpolld/lvmpolld-data-utils.h
@ -49,7 +49,6 @@ struct lvmpolld_lv {
 	const enum poll_type type;
 	const char *const lvid;
 	const char *const lvmpolld_id;
-	const char *const devicesfile;
 	const char *const lvname; /* full vg/lv name */
 	const unsigned pdtimeout; /* in seconds */
 	const char *const sinterval;
@ -102,8 +101,7 @@ struct lvmpolld_lv *pdlv_create(struct lvmpolld_state *ls, const char *id,
 			   const char *vgname, const char *lvname,
 			   const char *sysdir, enum poll_type type,
 			   const char *sinterval, unsigned pdtimeout,
-			   struct lvmpolld_store *pdst,
-			   const char *devicesfile);
+			   struct lvmpolld_store *pdst);

 /* only call with appropriate struct lvmpolld_store lock held */
 void pdlv_destroy(struct lvmpolld_lv *pdlv);
--- a/daemons/lvmpolld/lvmpolld-protocol.h
+++ b/daemons/lvmpolld/lvmpolld-protocol.h
@ -35,7 +35,6 @@
 #define LVMPD_PARM_SYSDIR		"sysdir"
 #define LVMPD_PARM_VALUE		"value" /* either retcode or signal value */
 #define LVMPD_PARM_VGNAME		"vgname"
-#define LVMPD_PARM_DEVICESFILE		"devicesfile"

 #define LVMPD_RESP_FAILED	"failed"
 #define LVMPD_RESP_FINISHED	"finished"
--- a/device_mapper/all.h
+++ b/device_mapper/all.h
@ -121,9 +121,7 @@ enum {

 	DM_DEVICE_SET_GEOMETRY,

-	DM_DEVICE_ARM_POLL,
-
-	DM_DEVICE_GET_TARGET_VERSION
+	DM_DEVICE_ARM_POLL
 };

 /*
@ -164,20 +162,20 @@ struct dm_info {
 struct dm_deps {
 	uint32_t count;
 	uint32_t filler;
-	uint64_t device[];
+	uint64_t device[0];
 };

 struct dm_names {
 	uint64_t dev;
 	uint32_t next;		/* Offset to next struct from start of this struct */
-	char name[];
+	char name[0];
 };

 struct dm_versions {
 	uint32_t next;		/* Offset to next struct from start of this struct */
 	uint32_t version[3];

-	char name[];
+	char name[0];
 };

 int dm_get_library_version(char *version, size_t size);
@ -234,8 +232,6 @@ int dm_task_suppress_identical_reload(struct dm_task *dmt);
 int dm_task_secure_data(struct dm_task *dmt);
 int dm_task_retry_remove(struct dm_task *dmt);
 int dm_task_deferred_remove(struct dm_task *dmt);
-int dm_task_ima_measurement(struct dm_task *dmt);
-void dm_task_skip_reload_params_compare(struct dm_task *dmt);

 /*
 * Record timestamp immediately after the ioctl returns.
@ -385,7 +381,7 @@ int dm_get_status_cache(struct dm_pool *mem, const char *params,
 			struct dm_status_cache **status);

 struct dm_status_writecache {
-	uint64_t error;
+	uint32_t error;
 	uint64_t total_blocks;
 	uint64_t free_blocks;
 	uint64_t writeback_blocks;
@ -394,15 +390,6 @@ struct dm_status_writecache {
 int dm_get_status_writecache(struct dm_pool *mem, const char *params,
                             struct dm_status_writecache **status);

-struct dm_status_integrity {
-	uint64_t number_of_mismatches;
-	uint64_t provided_data_sectors;
-	uint64_t recalc_sector;
-};
-
-int dm_get_status_integrity(struct dm_pool *mem, const char *params,
-                            struct dm_status_integrity **status);
-
 /*
 * Parse params from STATUS call for snapshot target
 *
@ -916,7 +903,6 @@ int dm_tree_node_add_raid_target_with_params_v2(struct dm_tree_node *node,
 #define DM_CACHE_FEATURE_WRITETHROUGH 0x00000002
 #define DM_CACHE_FEATURE_PASSTHROUGH  0x00000004
 #define DM_CACHE_FEATURE_METADATA2    0x00000008 /* cache v1.10 */
-#define DM_CACHE_FEATURE_NO_DISCARD_PASSDOWN 0x00000010

 struct dm_config_node;
 /*
@ -952,8 +938,6 @@ struct writecache_settings {
 	uint64_t autocommit_time; /* in milliseconds */
 	uint32_t fua;
 	uint32_t nofua;
-	uint32_t cleaner;
-	uint32_t max_age;

 	/*
 	 * Allow an unrecognized key and its val to be passed to the kernel for
@ -973,8 +957,6 @@ struct writecache_settings {
 	unsigned autocommit_time_set:1;
 	unsigned fua_set:1;
 	unsigned nofua_set:1;
-	unsigned cleaner_set:1;
-	unsigned max_age_set:1;
 };

 int dm_tree_node_add_writecache_target(struct dm_tree_node *node,
@ -985,42 +967,12 @@ int dm_tree_node_add_writecache_target(struct dm_tree_node *node,
 				uint32_t writecache_block_size,
 				struct writecache_settings *settings);

-struct integrity_settings {
-	char mode[8];
-	uint32_t tag_size;
-	uint32_t block_size;       /* optional table param always set by lvm */
-	const char *internal_hash; /* optional table param always set by lvm */
-
-	uint32_t journal_sectors;
-	uint32_t interleave_sectors;
-	uint32_t buffer_sectors;
-	uint32_t journal_watermark;
-	uint32_t commit_time;
-	uint32_t bitmap_flush_interval;
-	uint64_t sectors_per_bit;
-
-	unsigned journal_sectors_set:1;
-	unsigned interleave_sectors_set:1;
-	unsigned buffer_sectors_set:1;
-	unsigned journal_watermark_set:1;
-	unsigned commit_time_set:1;
-	unsigned bitmap_flush_interval_set:1;
-	unsigned sectors_per_bit_set:1;
-};
-
-int dm_tree_node_add_integrity_target(struct dm_tree_node *node,
-				uint64_t size,
-				const char *origin_uuid,
-				const char *meta_uuid,
-				struct integrity_settings *settings,
-				int recalculate);

 /*
 * VDO target
 */
 int dm_tree_node_add_vdo_target(struct dm_tree_node *node,
 				uint64_t size,
-				const char *vdo_pool_name,
 				const char *data_uuid,
 				uint64_t data_size,
 				const struct dm_vdo_target_params *param);
@ -1073,10 +1025,10 @@ int dm_tree_node_add_replicator_dev_target(struct dm_tree_node *node,
 #define DM_THIN_MIN_DATA_BLOCK_SIZE (UINT32_C(128))
 #define DM_THIN_MAX_DATA_BLOCK_SIZE (UINT32_C(2097152))
 /*
- * Max supported size for thin pool metadata device (17045913600 bytes)
+ * Max supported size for thin pool  metadata device (17112760320 bytes)
+ * Limitation is hardcoded into the kernel and bigger device size
+ * is not accepted.
 * drivers/md/dm-thin-metadata.h THIN_METADATA_MAX_SECTORS
- * But here DM_THIN_MAX_METADATA_SIZE got defined incorrectly
- * Correct size is (UINT64_C(255) * ((1 << 14) - 64) * (4096 / (1 << 9)))
 */
 #define DM_THIN_MAX_METADATA_SIZE   (UINT64_C(255) * (1 << 14) * (4096 / (1 << 9)) - 256 * 1024)

@ -1089,16 +1041,6 @@ int dm_tree_node_add_thin_pool_target(struct dm_tree_node *node,
 				      uint64_t low_water_mark,
 				      unsigned skip_block_zeroing);

-int dm_tree_node_add_thin_pool_target_v1(struct dm_tree_node *node,
-					 uint64_t size,
-					 uint64_t transaction_id,
-					 const char *metadata_uuid,
-					 const char *pool_uuid,
-					 uint32_t data_block_size,
-					 uint64_t low_water_mark,
-					 unsigned skip_block_zeroing,
-					 unsigned crop_metadata);
-
 /* Supported messages for thin provision target */
 typedef enum {
 	DM_THIN_MESSAGE_CREATE_SNAP,		/* device_id, origin_id */
@ -1329,7 +1271,7 @@ int dm_bit_get_next(dm_bitset_t bs, int last_bit);
 int dm_bit_get_last(dm_bitset_t bs);
 int dm_bit_get_prev(dm_bitset_t bs, int last_bit);

-#define DM_BITS_PER_INT ((unsigned)sizeof(int) * CHAR_BIT)
+#define DM_BITS_PER_INT (sizeof(int) * CHAR_BIT)

 #define dm_bit(bs, i) \
   ((bs)[((i) / DM_BITS_PER_INT) + 1] & (0x1 << ((i) & (DM_BITS_PER_INT - 1))))
--- a/device_mapper/datastruct/bitset.c
+++ b/device_mapper/datastruct/bitset.c
@ -150,8 +150,7 @@ dm_bitset_t dm_bitset_parse_list(const char *str, struct dm_pool *mem,
 				 size_t min_num_bits)
 {
 	unsigned a, b;
-	int c, old_c, totaldigits, ndigits;
-	size_t nmaskbits;
+	int c, old_c, totaldigits, ndigits, nmaskbits;
 	int at_start, in_range;
 	dm_bitset_t mask = NULL;
 	const char *start = str;
@ -243,3 +242,18 @@ bad:
 	}
 	return NULL;
 }
+
+#if defined(__GNUC__)
+/*
+ * Maintain backward compatibility with older versions that did not
+ * accept a 'min_num_bits' argument to dm_bitset_parse_list().
+ */
+dm_bitset_t dm_bitset_parse_list_v1_02_129(const char *str, struct dm_pool *mem);
+dm_bitset_t dm_bitset_parse_list_v1_02_129(const char *str, struct dm_pool *mem)
+{
+	return dm_bitset_parse_list(str, mem, 0);
+}
+
+#else /* if defined(__GNUC__) */
+
+#endif
--- a/device_mapper/ioctl/libdm-iface.c
+++ b/device_mapper/ioctl/libdm-iface.c
@ -119,9 +119,6 @@ static struct cmd_data _cmd_data_v4[] = {
 #ifdef DM_DEV_ARM_POLL
 	{"armpoll",	DM_DEV_ARM_POLL,	{4, 36, 0}},
 #endif
-#ifdef DM_GET_TARGET_VERSION
-	{"target-version", DM_GET_TARGET_VERSION, {4, 41, 0}},
-#endif
 };
 /* *INDENT-ON* */

@ -205,7 +202,7 @@ static int _get_proc_number(const char *file, const char *name,
 	}

 	while (getline(&line, &len, fl) != -1) {
-		if (sscanf(line, "%u %255s\n", &num, &nm[0]) == 2) {
+		if (sscanf(line, "%d %255s\n", &num, &nm[0]) == 2) {
 			if (!strcmp(name, nm)) {
 				if (number) {
 					*number = num;
@ -493,10 +490,7 @@ static void _dm_task_free_targets(struct dm_task *dmt)

 	for (t = dmt->head; t; t = n) {
 		n = t->next;
-		if (dmt->secure_data)
-			_dm_zfree_string(t->params);
-		else
-			free(t->params);
+		_dm_zfree_string(t->params);
 		free(t->type);
 		free(t);
 	}
@ -507,10 +501,7 @@ static void _dm_task_free_targets(struct dm_task *dmt)
 void dm_task_destroy(struct dm_task *dmt)
 {
 	_dm_task_free_targets(dmt);
-	if (dmt->secure_data)
-		_dm_zfree_dmi(dmt->dmi.v4);
-	else
-		free(dmt->dmi.v4);
+	_dm_zfree_dmi(dmt->dmi.v4);
 	free(dmt->dev_name);
 	free(dmt->mangled_dev_name);
 	free(dmt->newname);
@ -811,11 +802,6 @@ int dm_task_suppress_identical_reload(struct dm_task *dmt)
 	return 1;
 }

-void dm_task_skip_reload_params_compare(struct dm_task *dmt)
-{
-	dmt->skip_reload_params_compare = 1;
-}
-
 int dm_task_set_add_node(struct dm_task *dmt, dm_add_node_t add_node)
 {
 	switch (add_node) {
@ -926,13 +912,6 @@ int dm_task_secure_data(struct dm_task *dmt)
 	return 1;
 }

-int dm_task_ima_measurement(struct dm_task *dmt)
-{
-	dmt->ima_measurement = 1;
-
-	return 1;
-}
-
 int dm_task_retry_remove(struct dm_task *dmt)
 {
 	dmt->retry_remove = 1;
@ -1125,7 +1104,7 @@ static int _add_params(int type)

 static struct dm_ioctl *_flatten(struct dm_task *dmt, unsigned repeat_count)
 {
-	size_t min_size;
+	const size_t min_size = 16 * 1024;
 	const int (*version)[3];

 	struct dm_ioctl *dmi;
@ -1144,18 +1123,6 @@ static struct dm_ioctl *_flatten(struct dm_task *dmt, unsigned repeat_count)
 	else if (dmt->head)
 		log_debug_activation(INTERNAL_ERROR "dm '%s' ioctl should not define parameters.",
 				     _cmd_data_v4[dmt->type].name);
-	switch (dmt->type) {
-	case DM_DEVICE_CREATE:
-	case DM_DEVICE_DEPS:
-	case DM_DEVICE_LIST:
-	case DM_DEVICE_STATUS:
-	case DM_DEVICE_TABLE:
-	case DM_DEVICE_TARGET_MSG:
-		min_size = 16 * 1024;
-		break;
-	default:
-		min_size = 2 * 1024;
-	}

 	if (count && (dmt->sector || dmt->message)) {
 		log_error("targets and message are incompatible");
@ -1257,11 +1224,9 @@ static struct dm_ioctl *_flatten(struct dm_task *dmt, unsigned repeat_count)
 	/* FIXME Until resume ioctl supplies name, use dev_name for readahead */
 	if (DEV_NAME(dmt) && (dmt->type != DM_DEVICE_RESUME || dmt->minor < 0 ||
 			      dmt->major < 0))
-		/* coverity[buffer_size_warning] */
 		strncpy(dmi->name, DEV_NAME(dmt), sizeof(dmi->name));

 	if (DEV_UUID(dmt))
-		/* coverity[buffer_size_warning] */
 		strncpy(dmi->uuid, DEV_UUID(dmt), sizeof(dmi->uuid));

 	if (dmt->type == DM_DEVICE_SUSPEND)
@ -1300,14 +1265,6 @@ static struct dm_ioctl *_flatten(struct dm_task *dmt, unsigned repeat_count)
 		}
 		dmi->flags |= DM_UUID_FLAG;
 	}
-	if (dmt->ima_measurement) {
-		if (_dm_version_minor < 45) {
-			log_error("WARNING: IMA measurement unsupported by "
-				  "kernel.  Aborting operation.");
-			goto bad;
-		}
-		dmi->flags |= DM_IMA_MEASUREMENT_FLAG;
-	}

 	dmi->target_count = count;
 	dmi->event_nr = dmt->event_nr;
@ -1369,7 +1326,7 @@ static int _process_mapper_dir(struct dm_task *dmt)
 	}

 	if (closedir(d))
-		log_sys_debug("closedir", dir);
+		log_sys_error("closedir", dir);

 	return r;
 }
@ -1503,7 +1460,6 @@ static int _create_and_load_v4(struct dm_task *dmt)
 	task->head = dmt->head;
 	task->tail = dmt->tail;
 	task->secure_data = dmt->secure_data;
-	task->ima_measurement = dmt->ima_measurement;

 	r = dm_task_run(task);

@ -1616,36 +1572,11 @@ static int _reload_with_suppression_v4(struct dm_task *dmt)
 		len = strlen(t2->params);
 		while (len-- > 0 && t2->params[len] == ' ')
 			t2->params[len] = '\0';
-
-		if (t1->start != t2->start) {
-			log_debug("reload %u:%u diff start %llu %llu type %s %s", task->major, task->minor,
-				   (unsigned long long)t1->start, (unsigned long long)t2->start, t1->type, t2->type);
+		if ((t1->start != t2->start) ||
+		    (t1->length != t2->length) ||
+		    (strcmp(t1->type, t2->type)) ||
+		    (strcmp(t1->params, t2->params)))
 			goto no_match;
-		}
-		if (t1->length != t2->length) {
-			log_debug("reload %u:%u diff length %llu %llu type %s %s", task->major, task->minor,
-				  (unsigned long long)t1->length, (unsigned long long)t2->length, t1->type, t2->type);
-			goto no_match;
-		}
-		if (strcmp(t1->type, t2->type)) {
-			log_debug("reload %u:%u diff type %s %s", task->major, task->minor, t1->type, t2->type);
-			goto no_match;
-		}
-		if (strcmp(t1->params, t2->params)) {
-			if (dmt->skip_reload_params_compare) {
-				log_debug("reload %u:%u diff params ignore for type %s",
-					  task->major, task->minor, t1->type);
-				log_debug("reload params1 %s", t1->params);
-				log_debug("reload params2 %s", t2->params);
-			} else {
-				log_debug("reload %u:%u diff params for type %s",
-					  task->major, task->minor, t1->type);
-				log_debug("reload params1 %s", t1->params);
-				log_debug("reload params2 %s", t2->params);
-				goto no_match;
-			}
-		}
-
 		t1 = t1->next;
 		t2 = t2->next;
 	}
@ -1917,7 +1848,7 @@ static struct dm_ioctl *_do_dm_ioctl(struct dm_task *dmt, unsigned command,
 	}

 	log_debug_activation("dm %s %s%s %s%s%s %s%.0d%s%.0d%s"
-			     "%s[ %s%s%s%s%s%s%s%s%s%s] %.0" PRIu64 " %s [%u] (*%u)",
+			     "%s[ %s%s%s%s%s%s%s%s%s] %.0" PRIu64 " %s [%u] (*%u)",
 			     _cmd_data_v4[dmt->type].name,
 			     dmt->new_uuid ? "UUID " : "",
 			     dmi->name, dmi->uuid, dmt->newname ? " " : "",
@ -1935,7 +1866,6 @@ static struct dm_ioctl *_do_dm_ioctl(struct dm_task *dmt, unsigned command,
 			     dmt->retry_remove ? "retryremove " : "",
 			     dmt->deferred_remove ? "deferredremove " : "",
 			     dmt->secure_data ? "securedata " : "",
-			     dmt->ima_measurement ? "ima_measurement " : "",
 			     dmt->query_inactive_table ? "inactive " : "",
 			     dmt->enable_checks ? "enablechecks " : "",
 			     dmt->sector, _sanitise_message(dmt->message),
@ -2228,3 +2158,52 @@ void dm_lib_exit(void)
 	_version_ok = 1;
 	_version_checked = 0;
 }
+
+#if defined(__GNUC__)
+/*
+ * Maintain binary backward compatibility.
+ * Version script mechanism works with 'gcc' compatible compilers only.
+ */
+
+/*
+ * This following code is here to retain ABI compatibility after adding
+ * the field deferred_remove to struct dm_info in version 1.02.89.
+ *
+ * Binaries linked against version 1.02.88 of libdevmapper or earlier
+ * will use this function that returns dm_info without the
+ * deferred_remove field.
+ *
+ * Binaries compiled against version 1.02.89 onwards will use
+ * the new function dm_task_get_info_with_deferred_remove due to the
+ * #define.
+ *
+ * N.B. Keep this function at the end of the file to make sure that
+ * no code in this file accidentally calls it.
+ */
+
+int dm_task_get_info_base(struct dm_task *dmt, struct dm_info *info);
+int dm_task_get_info_base(struct dm_task *dmt, struct dm_info *info)
+{
+	struct dm_info new_info;
+
+	if (!dm_task_get_info(dmt, &new_info))
+		return 0;
+
+	memcpy(info, &new_info, offsetof(struct dm_info, deferred_remove));
+
+	return 1;
+}
+
+int dm_task_get_info_with_deferred_remove(struct dm_task *dmt, struct dm_info *info);
+int dm_task_get_info_with_deferred_remove(struct dm_task *dmt, struct dm_info *info)
+{
+	struct dm_info new_info;
+
+	if (!dm_task_get_info(dmt, &new_info))
+		return 0;
+
+	memcpy(info, &new_info, offsetof(struct dm_info, internal_suspend));
+
+	return 1;
+}
+#endif
--- a/device_mapper/ioctl/libdm-targets.h
+++ b/device_mapper/ioctl/libdm-targets.h
@ -59,7 +59,6 @@ struct dm_task {
 	int skip_lockfs;
 	int query_inactive_table;
 	int suppress_identical_reload;
-	int skip_reload_params_compare;
 	dm_add_node_t add_node;
 	uint64_t existing_table_size;
 	int cookie_set;
@ -70,7 +69,6 @@ struct dm_task {
 	int enable_checks;
 	int expected_errno;
 	int ioctl_errno;
-	int ima_measurement;

 	int record_timestamp;

--- a/device_mapper/libdm-common.c
+++ b/device_mapper/libdm-common.c
@ -338,7 +338,6 @@ struct dm_task *dm_task_create(int type)
 	dmt->new_uuid = 0;
 	dmt->secure_data = 0;
 	dmt->record_timestamp = 0;
-	dmt->ima_measurement = 0;

 	return dmt;
 }
@ -383,7 +382,7 @@ static int _find_dm_name_of_device(dev_t st_rdev, char *buf, size_t buf_len)
 	}

 	if (closedir(d))
-		log_sys_debug("closedir", _dm_dir);
+		log_sys_error("closedir", _dm_dir);

 	return r;
 }
@ -513,7 +512,7 @@ int unmangle_string(const char *str, const char *str_name, size_t len,
 	int strict = mode != DM_STRING_MANGLING_NONE;
 	char str_rest[DM_NAME_LEN];
 	size_t i, j;
-	unsigned int code;
+	int code;
 	int r = 0;

 	if (!str || !buf)
@ -932,7 +931,7 @@ int dm_task_add_target(struct dm_task *dmt, uint64_t start, uint64_t size,

 #ifdef HAVE_SELINUX
 static int _selabel_lookup(const char *path, mode_t mode,
-			   char **scontext)
+			   security_context_t *scontext)
 {
 #ifdef HAVE_SELINUX_LABEL_H
 	if (!_selabel_handle &&
@ -975,7 +974,7 @@ static int _is_selinux_enabled(void)
 int dm_prepare_selinux_context(const char *path, mode_t mode)
 {
 #ifdef HAVE_SELINUX
-	char *scontext = NULL;
+	security_context_t scontext = NULL;

 	if (_is_selinux_enabled() <= 0)
 		return 1;
@ -1003,7 +1002,7 @@ int dm_prepare_selinux_context(const char *path, mode_t mode)
 int dm_set_selinux_context(const char *path, mode_t mode)
 {
 #ifdef HAVE_SELINUX
-	char *scontext = NULL;
+	security_context_t scontext = NULL;

 	if (_is_selinux_enabled() <= 0)
 		return 1;
@ -1225,7 +1224,7 @@ int get_dev_node_read_ahead(const char *dev_name, uint32_t major, uint32_t minor
 	int len;
 	int r = 1;
 	int fd;
-	long read_ahead_long = 0;
+	long read_ahead_long;

 	/*
 	 * If we know the device number, use sysfs if we can.
@ -1875,120 +1874,6 @@ bad:
 	return r;
 }

-static int _sysfs_get_dev_major_minor(const char *path, uint32_t major, uint32_t minor)
-{
-	FILE *fp;
-	uint32_t ma, mi;
-	int r;
-
-	if (!(fp = fopen(path, "r")))
-		return 0;
-
-	r = (fscanf(fp, "%" PRIu32 ":%" PRIu32 , &ma, &mi) == 2) &&
-		(ma == major) && (mi == minor);
-	// log_debug("Checking %s  %u:%u  -> %d", path, ma, mi, r);
-
-	if (fclose(fp))
-		log_sys_error("fclose", path);
-
-	return r;
-}
-
-static int _sysfs_find_kernel_name(uint32_t major, uint32_t minor, char *buf, size_t buf_size)
-{
-	const char *name, *name_dev;
-	char path[PATH_MAX];
-	struct dirent *dirent, *dirent_dev;
-	DIR *d, *d_dev;
-	struct stat st;
-	int r = 0, sz;
-
-	if (!*_sysfs_dir ||
-	    dm_snprintf(path, sizeof(path), "%s/block/", _sysfs_dir) < 0) {
-		log_error("Failed to build sysfs_path.");
-		return 0;
-	}
-
-	if (!(d = opendir(path))) {
-		log_sys_error("opendir", path);
-		return 0;
-	}
-
-	while (!r && (dirent = readdir(d))) {
-		name = dirent->d_name;
-
-		if (!strcmp(name, ".") || !strcmp(name, ".."))
-			continue;
-
-		if ((sz = dm_snprintf(path, sizeof(path), "%sblock/%s/dev",
-				      _sysfs_dir, name)) < 5) {
-			log_warn("Couldn't create path for %s.", name);
-			continue;
-		}
-
-		if (_sysfs_get_dev_major_minor(path, major, minor)) {
-			r = dm_strncpy(buf, name, buf_size);
-			break; /* found */
-		}
-
-		path[sz - 4] = 0; /* strip /dev from end of path string */
-		if (stat(path, &st))
-			continue;
-
-		if (S_ISDIR(st.st_mode)) {
-
-			/* let's assume there is no tree-complex device in past systems */
-			if (!(d_dev = opendir(path))) {
-				log_sys_debug("opendir", path);
-				continue;
-			}
-
-			while ((dirent_dev = readdir(d_dev))) {
-				name_dev = dirent_dev->d_name;
-
-				/* skip known ignorable paths */
-				if (!strcmp(name_dev, ".") || !strcmp(name_dev, "..") ||
-				    !strcmp(name_dev, "bdi") ||
-				    !strcmp(name_dev, "dev") ||
-				    !strcmp(name_dev, "device") ||
-				    !strcmp(name_dev, "holders") ||
-				    !strcmp(name_dev, "integrity") ||
-				    !strcmp(name_dev, "loop") ||
-				    !strcmp(name_dev, "queueu") ||
-				    !strcmp(name_dev, "md") ||
-				    !strcmp(name_dev, "mq") ||
-				    !strcmp(name_dev, "power") ||
-				    !strcmp(name_dev, "removable") ||
-				    !strcmp(name_dev, "slave") ||
-				    !strcmp(name_dev, "slaves") ||
-				    !strcmp(name_dev, "subsystem") ||
-				    !strcmp(name_dev, "trace") ||
-				    !strcmp(name_dev, "uevent"))
-					continue;
-
-				if (dm_snprintf(path, sizeof(path), "%sblock/%s/%s/dev",
-						_sysfs_dir, name, name_dev) == -1) {
-					log_warn("Couldn't create path for %s/%s.", name, name_dev);
-					continue;
-				}
-
-				if (_sysfs_get_dev_major_minor(path, major, minor)) {
-					r = dm_strncpy(buf, name_dev, buf_size);
-					break; /* found */
-				}
-			}
-
-			if (closedir(d_dev))
-				log_sys_debug("closedir", name);
-		}
-	}
-
-	if (closedir(d))
-		log_sys_debug("closedir", path);
-
-	return r;
-}
-
 static int _sysfs_get_kernel_name(uint32_t major, uint32_t minor, char *buf, size_t buf_size)
 {
 	char *name, *sysfs_path, *temp_buf = NULL;
@ -2011,11 +1896,8 @@ static int _sysfs_get_kernel_name(uint32_t major, uint32_t minor, char *buf, siz
 	if ((size = readlink(sysfs_path, temp_buf, PATH_MAX - 1)) < 0) {
 		if (errno != ENOENT)
 			log_sys_error("readlink", sysfs_path);
-		else {
+		else
 			log_sys_debug("readlink", sysfs_path);
-			r = _sysfs_find_kernel_name(major, minor, buf, buf_size);
-			goto out;
-		}
 		goto bad;
 	}
 	temp_buf[size] = '\0';
@ -2035,7 +1917,6 @@ static int _sysfs_get_kernel_name(uint32_t major, uint32_t minor, char *buf, siz
 	strcpy(buf, name);
 	r = 1;
 bad:
-out:
 	free(temp_buf);
 	free(sysfs_path);

--- a/device_mapper/libdm-config.c
+++ b/device_mapper/libdm-config.c
@ -51,8 +51,6 @@ struct parser {

 	struct dm_pool *mem;
 	int no_dup_node_check;	/* whether to disable dup node checking */
-	const char *key;        /* last obtained key */
-	unsigned ignored_creation_time;
 };

 struct config_output {
@ -178,7 +176,7 @@ static int _do_dm_config_parse(struct dm_config_tree *cft, const char *start, co
 	/* TODO? if (start == end) return 1; */

 	struct parser *p;
-	if (!(p = dm_pool_zalloc(cft->mem, sizeof(*p))))
+	if (!(p = dm_pool_alloc(cft->mem, sizeof(*p))))
 		return_0;

 	p->mem = cft->mem;
@ -599,7 +597,7 @@ static struct dm_config_node *_section(struct parser *p, struct dm_config_node *
 		match(TOK_IDENTIFIER);
 	}

-	if (!*str) {
+	if (!strlen(str)) {
 		log_error("Parse error at byte %" PRIptrdiff_t " (line %d): empty section identifier",
 			  p->tb - p->fb + 1, p->line);
 		return NULL;
@ -617,7 +615,6 @@ static struct dm_config_node *_section(struct parser *p, struct dm_config_node *
 		match(TOK_SECTION_E);
 	} else {
 		match(TOK_EQ);
-		p->key = root->key;
 		if (!(value = _value(p)))
 			return_NULL;
 		if (root->v)
@ -685,17 +682,8 @@ static struct dm_config_value *_type(struct parser *p)
 		errno = 0;
 		v->v.i = strtoll(p->tb, NULL, 0);	/* FIXME: check error */
 		if (errno) {
-			if (errno == ERANGE && p->key &&
-			    strcmp("creation_time", p->key) == 0) {
-				/* Due to a bug in some older 32bit builds (<2.02.169),
-				 * lvm was able to produce invalid creation_time string */
-				v->v.i = 1527120000; /* Pick 2018-05-24 day instead */
-				if (!p->ignored_creation_time++)
-					log_warn("WARNING: Invalid creation_time found in metadata (repaired with next metadata update).");
-			} else {
-				log_error("Failed to read int token.");
-				return NULL;
-			}
+			log_error("Failed to read int token.");
+			return NULL;
 		}
 		match(TOK_INT);
 		break;
@ -983,7 +971,7 @@ static const char *_find_config_str(const void *start, node_lookup_fn find_fn,
 	}

 	if (fail)
-		log_very_verbose("%s not found in config: defaulting to \"%s\"",
+		log_very_verbose("%s not found in config: defaulting to %s",
 				 path, fail);
 	return fail;
 }
--- a/device_mapper/libdm-deptree.c
+++ b/device_mapper/libdm-deptree.c
@ -38,7 +38,6 @@ enum {
 	SEG_STRIPED,
 	SEG_ZERO,
 	SEG_WRITECACHE,
-	SEG_INTEGRITY,
 	SEG_THIN_POOL,
 	SEG_THIN,
 	SEG_VDO,
@ -79,7 +78,6 @@ static const struct {
 	{ SEG_STRIPED, "striped" },
 	{ SEG_ZERO, "zero"},
 	{ SEG_WRITECACHE, "writecache"},
-	{ SEG_INTEGRITY, "integrity"},
 	{ SEG_THIN_POOL, "thin-pool"},
 	{ SEG_THIN, "thin"},
 	{ SEG_VDO, "vdo" },
@ -223,11 +221,6 @@ struct load_segment {
 	int writecache_pmem;				/* writecache, 1 if pmem, 0 if ssd */
 	uint32_t writecache_block_size;			/* writecache, in bytes */
 	struct writecache_settings writecache_settings;	/* writecache */
-
-	uint64_t integrity_data_sectors;		/* integrity (provided_data_sectors) */
-	struct dm_tree_node *integrity_meta_node;	/* integrity */
-	struct integrity_settings integrity_settings;	/* integrity */
-	int integrity_recalculate;			/* integrity */
 };

 /* Per-device properties */
@ -274,16 +267,6 @@ struct load_properties {
 	 */
 	unsigned delay_resume_if_extended;

-	/*
-	 * When comparing table lines to decide if a reload is
-	 * needed, ignore any differences betwen the lvm device
-	 * params and the kernel-reported device params.
-	 * dm-integrity reports many internal parameters on the
-	 * table line when lvm does not explicitly set them,
-	 * causing lvm and the kernel to have differing params.
-	 */
-	unsigned skip_reload_params_compare;
-
 	/*
 	 * Call node_send_messages(), set to 2 if there are messages
 	 * When != 0, it validates matching transaction id, thus thin-pools
@ -330,7 +313,16 @@ struct dm_tree_node {
 	dm_node_callback_fn callback;
 	void *callback_data;

-	int activated;                  /* tracks activation during preload */
+	/*
+	 * TODO:
+	 *	Add advanced code which tracks of send ioctls and their
+	 *	proper revert operation for more advanced recovery
+	 *	Current code serves mostly only to recovery when
+	 *	thin pool metadata check fails and command would
+	 *	have left active thin data and metadata subvolumes.
+	 */
+	struct dm_list activated;	/* Head of activated nodes for preload revert */
+	struct dm_list activated_list;	/* List of activated nodes for preload revert */
 };

 struct dm_tree {
@ -365,18 +357,19 @@ struct dm_tree *dm_tree_create(void)
 	dtree->root.dtree = dtree;
 	dm_list_init(&dtree->root.uses);
 	dm_list_init(&dtree->root.used_by);
+	dm_list_init(&dtree->root.activated);
 	dtree->skip_lockfs = 0;
 	dtree->no_flush = 0;
 	dtree->mem = dmem;
 	dtree->optional_uuid_suffixes = NULL;

-	if (!(dtree->devs = dm_hash_create(61))) {
+	if (!(dtree->devs = dm_hash_create(8))) {
 		log_error("dtree hash creation failed");
 		dm_pool_destroy(dtree->mem);
 		return NULL;
 	}

-	if (!(dtree->uuids = dm_hash_create(31))) {
+	if (!(dtree->uuids = dm_hash_create(32))) {
 		log_error("dtree uuid hash creation failed");
 		dm_hash_destroy(dtree->devs);
 		dm_pool_destroy(dtree->mem);
@ -549,6 +542,7 @@ static struct dm_tree_node *_create_dm_tree_node(struct dm_tree *dtree,

 	dm_list_init(&node->uses);
 	dm_list_init(&node->used_by);
+	dm_list_init(&node->activated);
 	dm_list_init(&node->props.segs);

 	dev = MKDEV(info->major, info->minor);
@ -604,7 +598,7 @@ static struct dm_tree_node *_find_dm_tree_node_by_uuid(struct dm_tree *dtree,
 	default_uuid_prefix = dm_uuid_prefix();
 	default_uuid_prefix_len = strlen(default_uuid_prefix);

-	if (suffix_list && (suffix_position = strrchr(uuid, '-'))) {
+	if (suffix_list && (suffix_position = rindex(uuid, '-'))) {
 		while ((suffix = suffix_list[i++])) {
 			if (strcmp(suffix_position + 1, suffix))
 				continue;
@ -1578,37 +1572,8 @@ static int _thin_pool_node_message(struct dm_tree_node *dnode, struct thin_messa
 	}

 	if (!_node_message(dnode->info.major, dnode->info.minor,
-			   tm->expected_errno, buf)) {
-		switch (m->type) {
-		case DM_THIN_MESSAGE_CREATE_SNAP:
-		case DM_THIN_MESSAGE_CREATE_THIN:
-			if (errno == EEXIST) {
-				/*
-				 * ATM errno from ioctl() is preserved through code error path chain
-				 * If this would ever change, another way need to be used to
-				 * obtain result from failed DM message
-				 */
-				log_error("Thin pool %s already contain thin device with device_id %u.",
-					  _node_name(dnode), m->u.m_create_snap.device_id);
-				/*
-				 * TODO:
-				 *
-				 * Give some useful advice how to solve this problem,
-				 * until lvconvert --repair can handle this automatically
-				 */
-				log_error("Manual intervention may be required to remove device dev_id=%u in thin pool metadata.",
-					  m->u.m_create_snap.device_id);
-				log_error("Optionally new thin volume with device_id=%u can be manually added into a volume group.",
-					  m->u.m_create_snap.device_id);
-				log_warn("WARNING: When uncertain how to do this, contact support!");
-				return 0;
-			}
-			/* fall through */
-		default:
-			return_0;
-		}
-
-	}
+			   tm->expected_errno, buf))
+		return_0;

 	return 1;
 }
@ -1655,15 +1620,6 @@ static int _thin_pool_node_send_messages(struct dm_tree_node *dnode,
 	if (!have_messages || !send)
 		return 1; /* transaction_id is matching */

-	if (stp.fail || stp.read_only || stp.needs_check) {
-		log_error("Cannot send messages to thin pool %s%s%s%s.",
-			  _node_name(dnode),
-			  stp.fail ? " in failed state" : "",
-			  stp.read_only ? " with read only metadata" : "",
-			  stp.needs_check ? " which needs check first" : "");
-		return 0;
-	}
-
 	dm_list_iterate_items(tmsg, &seg->thin_messages) {
 		if (!(_thin_pool_node_message(dnode, tmsg)))
 			return_0;
@ -2125,7 +2081,7 @@ int dm_tree_activate_children(struct dm_tree_node *dnode,
 	return r;
 }

-static int _create_node(struct dm_tree_node *dnode, struct dm_tree_node *parent)
+static int _create_node(struct dm_tree_node *dnode)
 {
 	int r = 0;
 	struct dm_task *dmt;
@ -2174,15 +2130,38 @@ static int _create_node(struct dm_tree_node *dnode, struct dm_tree_node *parent)
 				  "Unable to get DM task info for %s.",
 				  dnode->name);
 	}
-
-	if (r)
-		dnode->activated = 1;
 out:
 	dm_task_destroy(dmt);

 	return r;
 }

+/*
+ * _remove_node
+ *
+ * This function is only used to remove a DM device that has failed
+ * to load any table.
+ */
+static int _remove_node(struct dm_tree_node *dnode)
+{
+	if (!dnode->info.exists)
+		return 1;
+
+	if (dnode->info.live_table || dnode->info.inactive_table) {
+		log_error(INTERNAL_ERROR
+			  "_remove_node called on device with loaded table(s).");
+		return 0;
+	}
+
+	if (!_deactivate_node(dnode->name, dnode->info.major, dnode->info.minor,
+			      &dnode->dtree->cookie, dnode->udev_flags, 0)) {
+		log_error("Failed to clean-up device with no table: %s.",
+			  _node_name(dnode));
+		return 0;
+	}
+	return 1;
+}
+
 static int _build_dev_string(char *devbuf, size_t bufsize, struct dm_tree_node *node)
 {
 	if (!dm_format_dev(devbuf, bufsize, node->info.major, node->info.minor)) {
@ -2371,7 +2350,7 @@ static int _mirror_emit_segment_line(struct dm_task *dmt, struct load_segment *s

 	EMIT_PARAMS(pos, " %u ", seg->mirror_area_count);

-	if (!_emit_areas_line(dmt, seg, params, paramsize, &pos))
+	if (_emit_areas_line(dmt, seg, params, paramsize, &pos) <= 0)
 		return_0;

 	if (handle_errors)
@ -2573,7 +2552,7 @@ static int _raid_emit_segment_line(struct dm_task *dmt, uint32_t major,
 	/* Print number of metadata/data device pairs */
 	EMIT_PARAMS(pos, " %u", area_count);

-	if (!_emit_areas_line(dmt, seg, params, paramsize, &pos))
+	if (_emit_areas_line(dmt, seg, params, paramsize, &pos) <= 0)
 		return_0;

 	return 1;
@ -2633,7 +2612,7 @@ static int _cache_emit_segment_line(struct dm_task *dmt,
 	EMIT_PARAMS(pos, " %s", name);

 	/* Do not pass migration_threshold 2048 which is default */
-	EMIT_PARAMS(pos, " %u", (seg->policy_argc + ((seg->migration_threshold != 2048) ? 1 : 0)) * 2);
+	EMIT_PARAMS(pos, " %u", (seg->policy_argc + (seg->migration_threshold != 2048) ? 1 : 0) * 2);
 	if (seg->migration_threshold != 2048)
 		    EMIT_PARAMS(pos, " migration_threshold %u", seg->migration_threshold);
 	if (seg->policy_settings)
@ -2674,10 +2653,6 @@ static int _writecache_emit_segment_line(struct dm_task *dmt,
 		count += 1;
 	if (seg->writecache_settings.nofua_set)
 		count += 1;
-	if (seg->writecache_settings.cleaner_set && seg->writecache_settings.cleaner)
-		count += 1;
-	if (seg->writecache_settings.max_age_set)
-		count += 2;
 	if (seg->writecache_settings.new_key)
 		count += 2;

@ -2721,14 +2696,6 @@ static int _writecache_emit_segment_line(struct dm_task *dmt,
 		EMIT_PARAMS(pos, " nofua");
 	}

-	if (seg->writecache_settings.cleaner_set && seg->writecache_settings.cleaner) {
-		EMIT_PARAMS(pos, " cleaner");
-	}
-
-	if (seg->writecache_settings.max_age_set) {
-		EMIT_PARAMS(pos, " max_age %u", seg->writecache_settings.max_age);
-	}
-
 	if (seg->writecache_settings.new_key) {
 		EMIT_PARAMS(pos, " %s %s",
 			seg->writecache_settings.new_key,
@ -2738,87 +2705,6 @@ static int _writecache_emit_segment_line(struct dm_task *dmt,
 	return 1;
 }

-static int _integrity_emit_segment_line(struct dm_task *dmt,
-				    struct load_segment *seg,
-				    char *params, size_t paramsize)
-{
-	struct integrity_settings *set = &seg->integrity_settings;
-	int pos = 0;
-	int count;
-	char origin_dev[DM_FORMAT_DEV_BUFSIZE];
-	char meta_dev[DM_FORMAT_DEV_BUFSIZE];
-
-	if (!_build_dev_string(origin_dev, sizeof(origin_dev), seg->origin))
-		return_0;
-
-	if (seg->integrity_meta_node &&
-	    !_build_dev_string(meta_dev, sizeof(meta_dev), seg->integrity_meta_node))
-		return_0;
-
-	count = 3; /* block_size, internal_hash, fix_padding options are always passed */
-
-	if (seg->integrity_meta_node)
-		count++;
-
-	if (seg->integrity_recalculate)
-		count++;
-
-	if (set->journal_sectors_set)
-		count++;
-	if (set->interleave_sectors_set)
-		count++;
-	if (set->buffer_sectors_set)
-		count++;
-	if (set->journal_watermark_set)
-		count++;
-	if (set->commit_time_set)
-		count++;
-	if (set->bitmap_flush_interval_set)
-		count++;
-	if (set->sectors_per_bit_set)
-		count++;
-
-	EMIT_PARAMS(pos, "%s 0 %u %s %d fix_padding block_size:%u internal_hash:%s",
-		    origin_dev,
-		    set->tag_size,
-		    set->mode,
-		    count,
-		    set->block_size,
-		    set->internal_hash);
-
-	if (seg->integrity_meta_node)
-		EMIT_PARAMS(pos, " meta_device:%s", meta_dev);
-
-	if (seg->integrity_recalculate)
-		EMIT_PARAMS(pos, " recalculate");
-
-	if (set->journal_sectors_set)
-		EMIT_PARAMS(pos, " journal_sectors:%u", set->journal_sectors);
-
-	if (set->interleave_sectors_set)
-		EMIT_PARAMS(pos, " ineterleave_sectors:%u", set->interleave_sectors);
-
-	if (set->buffer_sectors_set)
-		EMIT_PARAMS(pos, " buffer_sectors:%u", set->buffer_sectors);
-
-	if (set->journal_watermark_set)
-		EMIT_PARAMS(pos, " journal_watermark:%u", set->journal_watermark);
-
-	if (set->commit_time_set)
-		EMIT_PARAMS(pos, " commit_time:%u", set->commit_time);
-
-	if (set->bitmap_flush_interval_set)
-		EMIT_PARAMS(pos, " bitmap_flush_interval:%u", set->bitmap_flush_interval);
-
-	if (set->sectors_per_bit_set)
-		EMIT_PARAMS(pos, " sectors_per_bit:%llu", (unsigned long long)set->sectors_per_bit);
-
-	if (!dm_task_secure_data(dmt))
-		stack;
-
-	return 1;
-}
-
 static int _thin_pool_emit_segment_line(struct dm_task *dmt,
 					struct load_segment *seg,
 					char *params, size_t paramsize)
@ -2869,13 +2755,12 @@ static int _vdo_emit_segment_line(struct dm_task *dmt,
 		    "maxDiscard %u ack %u bio %u bioRotationInterval %u cpu %u hash %u logical %u physical %u",
 		    data_dev,
 		    seg->vdo_data_size / 8, // this parameter is in 4K units
-		    seg->vdo_params.minimum_io_size * UINT32_C(512), //  sector to byte units
+		    seg->vdo_params.minimum_io_size,
 		    seg->vdo_params.block_map_cache_size_mb * UINT64_C(256),	// 1MiB -> 4KiB units
 		    seg->vdo_params.block_map_era_length,
 		    seg->vdo_params.use_metadata_hints ? "on" : "off" ,
 		    (seg->vdo_params.write_policy == DM_VDO_WRITE_POLICY_SYNC) ? "sync" :
-			(seg->vdo_params.write_policy == DM_VDO_WRITE_POLICY_ASYNC) ? "async" :
-			(seg->vdo_params.write_policy == DM_VDO_WRITE_POLICY_ASYNC_UNSAFE) ? "async-unsafe" : "auto", // policy
+			(seg->vdo_params.write_policy == DM_VDO_WRITE_POLICY_ASYNC) ? "async" : "auto", // policy
 		    seg->vdo_name,
 		    seg->vdo_params.max_discard,
 		    seg->vdo_params.ack_threads,
@ -2920,6 +2805,7 @@ static int _emit_segment_line(struct dm_task *dmt, uint32_t major,
 			      size_t paramsize)
 {
 	int pos = 0;
+	int r;
 	int target_type_is_raid = 0;
 	char originbuf[DM_FORMAT_DEV_BUFSIZE], cowbuf[DM_FORMAT_DEV_BUFSIZE];

@ -2930,7 +2816,8 @@ static int _emit_segment_line(struct dm_task *dmt, uint32_t major,
 		break;
 	case SEG_MIRRORED:
 		/* Mirrors are pretty complicated - now in separate function */
-		if (!_mirror_emit_segment_line(dmt, seg, params, paramsize))
+		r = _mirror_emit_segment_line(dmt, seg, params, paramsize);
+		if (!r)
 			return_0;
 		break;
 	case SEG_SNAPSHOT:
@ -2951,7 +2838,7 @@ static int _emit_segment_line(struct dm_task *dmt, uint32_t major,
 		EMIT_PARAMS(pos, "%u %u ", seg->area_count, seg->stripe_size);
 		break;
 	case SEG_VDO:
-		if (!_vdo_emit_segment_line(dmt, seg, params, paramsize))
+		if (!(r = _vdo_emit_segment_line(dmt, seg, params, paramsize)))
 		      return_0;
 		break;
 	case SEG_CRYPT:
@ -2980,8 +2867,9 @@ static int _emit_segment_line(struct dm_task *dmt, uint32_t major,
 	case SEG_RAID6_LA_6:
 	case SEG_RAID6_RA_6:
 		target_type_is_raid = 1;
-		if (!_raid_emit_segment_line(dmt, major, minor, seg, seg_start,
-					     params, paramsize))
+		r = _raid_emit_segment_line(dmt, major, minor, seg, seg_start,
+					    params, paramsize);
+		if (!r)
 			return_0;

 		break;
@ -3001,10 +2889,6 @@ static int _emit_segment_line(struct dm_task *dmt, uint32_t major,
 		if (!_writecache_emit_segment_line(dmt, seg, params, paramsize))
 			return_0;
 		break;
-	case SEG_INTEGRITY:
-		if (!_integrity_emit_segment_line(dmt, seg, params, paramsize))
-			return_0;
-		break;
 	}

 	switch(seg->type) {
@ -3017,14 +2901,14 @@ static int _emit_segment_line(struct dm_task *dmt, uint32_t major,
 	case SEG_THIN:
 	case SEG_CACHE:
 	case SEG_WRITECACHE:
-	case SEG_INTEGRITY:
 		break;
 	case SEG_CRYPT:
 	case SEG_LINEAR:
 	case SEG_STRIPED:
-		if (!_emit_areas_line(dmt, seg, params, paramsize, &pos))
-			return_0;
-
+		if ((r = _emit_areas_line(dmt, seg, params, paramsize, &pos)) <= 0) {
+			stack;
+			return r;
+		}
 		if (!params[0]) {
 			log_error("No parameters supplied for %s target "
 				  "%u:%u.", _dm_segtypes[seg->type].target,
@ -3121,9 +3005,6 @@ static int _load_node(struct dm_tree_node *dnode)
 	if (!dm_task_suppress_identical_reload(dmt))
 		log_warn("WARNING: Failed to suppress reload of identical tables.");

-	if (dnode->props.skip_reload_params_compare)
-		dm_task_skip_reload_params_compare(dmt);
-
 	if ((r = dm_task_run(dmt))) {
 		r = dm_task_get_info(dmt, &dnode->info);
 		if (r && !dnode->info.inactive_table)
@ -3142,8 +3023,8 @@ static int _load_node(struct dm_tree_node *dnode)
 			if (!existing_table_size && dnode->props.delay_resume_if_new)
 				dnode->props.size_changed = 0;

-			log_debug_activation("Table size changed from %" PRIu64 " to %" PRIu64 " for %s.%s",
-					     existing_table_size,
+			log_debug_activation("Table size changed from %" PRIu64 " to %"
+					     PRIu64 " for %s.%s", existing_table_size,
 					     seg_start, _node_name(dnode),
 					     dnode->props.size_changed ? "" : " (Ignoring.)");

@ -3169,45 +3050,32 @@ out:
 	return r;
 }

-/* Try to deactivate only nodes created during preload. */
-static int _dm_tree_revert_activated(struct dm_tree_node *dnode)
+/*
+ * Currently try to deactivate only nodes created during preload.
+ * New node is always attached to the front of activated_list
+ */
+static int _dm_tree_revert_activated(struct dm_tree_node *parent)
 {
-	void *handle = NULL;
 	struct dm_tree_node *child;

-	while ((child = dm_tree_next_child(&handle, dnode, 0))) {
-		if (child->activated) {
-			if (child->callback) {
-				log_debug_activation("Dropping callback for %s.", _node_name(child));
-				child->callback = NULL;
-			}
-
-			log_debug_activation("Reverting %s.", _node_name(child));
-			if (!_deactivate_node(child->name, child->info.major, child->info.minor,
-					      &child->dtree->cookie, child->udev_flags, 0)) {
-				log_debug_activation("Unable to deactivate %s.", _node_name(child));
-				return 0;
-			}
+	dm_list_iterate_items_gen(child, &parent->activated, activated_list) {
+		log_debug_activation("Reverting %s.", _node_name(child));
+		if (child->callback) {
+			log_debug_activation("Dropping callback for %s.", _node_name(child));
+			child->callback = NULL;
 		}
-
-		if (dm_tree_node_num_children(child, 0) &&
-		    !_dm_tree_revert_activated(child))
+		if (!_deactivate_node(child->name, child->info.major, child->info.minor,
+				      &child->dtree->cookie, child->udev_flags, 0)) {
+			log_error("Unable to deactivate %s.", _node_name(child));
+			return 0;
+		}
+		if (!_dm_tree_revert_activated(child))
 			return_0;
 	}

 	return 1;
 }

-static int _dm_tree_wait_and_revert_activated(struct dm_tree_node *dnode)
-{
-	if (!dm_udev_wait(dm_tree_get_cookie(dnode)))
-		stack;
-
-	dm_tree_set_cookie(dnode, 0);
-
-	return _dm_tree_revert_activated(dnode);
-}
-
 int dm_tree_preload_children(struct dm_tree_node *dnode,
 			     const char *uuid_prefix,
 			     size_t uuid_prefix_len)
@ -3237,7 +3105,7 @@ int dm_tree_preload_children(struct dm_tree_node *dnode,
 				return_0;

 		/* FIXME Cope if name exists with no uuid? */
-		if (!child->info.exists && !(node_created = _create_node(child, dnode)))
+		if (!child->info.exists && !(node_created = _create_node(child)))
 			return_0;

 		/* Propagate delayed resume from exteded child node */
@ -3247,22 +3115,28 @@ int dm_tree_preload_children(struct dm_tree_node *dnode,
 		if (!child->info.inactive_table &&
 		    child->props.segment_count &&
 		    !_load_node(child)) {
-			stack;
 			/*
-			 * If the table load fails, try to device in the kernel
-			 * together with other created and preloaded devices.
+			 * If the table load does not succeed, we remove the
+			 * device in the kernel that would otherwise have an
+			 * empty table.  This makes the create + load of the
+			 * device atomic.  However, if other dependencies have
+			 * already been created and loaded; this code is
+			 * insufficient to remove those - only the node
+			 * encountering the table load failure is removed.
 			 */
-			if (!_dm_tree_wait_and_revert_activated(dnode))
-				stack;
-			r = 0;
-			continue;
+			if (node_created) {
+				if (!_remove_node(child))
+					return_0;
+				if (!dm_udev_wait(dm_tree_get_cookie(dnode)))
+					stack;
+				dm_tree_set_cookie(dnode, 0);
+				(void) _dm_tree_revert_activated(child);
+			}
+			return_0;
 		}

 		/* No resume for a device without parents or with unchanged or smaller size */
-		if (!dm_tree_node_num_children(child, 1))
-			continue;
-
-		if (child->props.size_changed <= 0)
+		if (!dm_tree_node_num_children(child, 1) || (child->props.size_changed <= 0))
 			continue;

 		if (!child->info.inactive_table && !child->info.suspended)
@ -3273,19 +3147,28 @@ int dm_tree_preload_children(struct dm_tree_node *dnode,
 				  &child->info, &child->dtree->cookie, child->udev_flags,
 				  child->info.suspended)) {
 			log_error("Unable to resume %s.", _node_name(child));
-			if (!_dm_tree_wait_and_revert_activated(dnode))
-				stack;
+			/* If the device was not previously active, we might as well remove this node. */
+			if (!child->info.live_table &&
+			    !_deactivate_node(child->name, child->info.major, child->info.minor,
+					      &child->dtree->cookie, child->udev_flags, 0))
+				log_error("Unable to deactivate %s.", _node_name(child));
 			r = 0;
+			/* Each child is handled independently */
 			continue;
 		}

 		if (node_created) {
+			/* Collect newly introduced devices for revert */
+			dm_list_add_h(&dnode->activated, &child->activated_list);
+
 			/* When creating new node also check transaction_id. */
 			if (child->props.send_messages &&
 			    !_node_send_messages(child, uuid_prefix, uuid_prefix_len, 0)) {
 				stack;
-				if (!_dm_tree_wait_and_revert_activated(dnode))
+				if (!dm_udev_wait(dm_tree_get_cookie(dnode)))
 					stack;
+				dm_tree_set_cookie(dnode, 0);
+				(void) _dm_tree_revert_activated(dnode);
 				r = 0;
 				continue;
 			}
@ -3855,48 +3738,6 @@ int dm_tree_node_add_writecache_target(struct dm_tree_node *node,
 	return 1;
 }

-int dm_tree_node_add_integrity_target(struct dm_tree_node *node,
-				  uint64_t size,
-				  const char *origin_uuid,
-				  const char *meta_uuid,
-				  struct integrity_settings *settings,
-				  int recalculate)
-{
-	struct load_segment *seg;
-
-	if (!(seg = _add_segment(node, SEG_INTEGRITY, size)))
-		return_0;
-
-	if (!meta_uuid) {
-		log_error("No integrity meta uuid.");
-		return 0;
-	}
-
-	if (!(seg->integrity_meta_node = dm_tree_find_node_by_uuid(node->dtree, meta_uuid))) {
-		log_error("Missing integrity's meta uuid %s.", meta_uuid);
-		return 0;
-	}
-
-	if (!_link_tree_nodes(node, seg->integrity_meta_node))
-		return_0;
-
-	if (!(seg->origin = dm_tree_find_node_by_uuid(node->dtree, origin_uuid))) {
-		log_error("Missing integrity's origin uuid %s.", origin_uuid);
-		return 0;
-	}
-
-	if (!_link_tree_nodes(node, seg->origin))
-		return_0;
-
-	memcpy(&seg->integrity_settings, settings, sizeof(struct integrity_settings));
-
-	seg->integrity_recalculate = recalculate;
-
-	node->props.skip_reload_params_compare = 1;
-
-	return 1;
-}
-
 int dm_tree_node_add_replicator_target(struct dm_tree_node *node,
 				       uint64_t size,
 				       const char *rlog_uuid,
@ -3970,24 +3811,6 @@ int dm_tree_node_add_thin_pool_target(struct dm_tree_node *node,
 				      uint32_t data_block_size,
 				      uint64_t low_water_mark,
 				      unsigned skip_block_zeroing)
-{
-	return dm_tree_node_add_thin_pool_target_v1(node, size, transaction_id,
-						    metadata_uuid, pool_uuid,
-						    data_block_size,
-						    low_water_mark,
-						    skip_block_zeroing,
-						    1);
-}
-
-int dm_tree_node_add_thin_pool_target_v1(struct dm_tree_node *node,
-					 uint64_t size,
-					 uint64_t transaction_id,
-					 const char *metadata_uuid,
-					 const char *pool_uuid,
-					 uint32_t data_block_size,
-					 uint64_t low_water_mark,
-					 unsigned skip_block_zeroing,
-					 unsigned crop_metadata)
 {
 	struct load_segment *seg, *mseg;
 	uint64_t devsize = 0;
@ -4015,18 +3838,17 @@ int dm_tree_node_add_thin_pool_target_v1(struct dm_tree_node *node,
 	if (!_link_tree_nodes(node, seg->metadata))
 		return_0;

-	if (crop_metadata)
-		/* FIXME: more complex target may need more tweaks */
-		dm_list_iterate_items(mseg, &seg->metadata->props.segs) {
-			devsize += mseg->size;
-			if (devsize > DM_THIN_MAX_METADATA_SIZE) {
-				log_debug_activation("Ignoring %" PRIu64 " of device.",
-						     devsize - DM_THIN_MAX_METADATA_SIZE);
-				mseg->size -= (devsize - DM_THIN_MAX_METADATA_SIZE);
-				devsize = DM_THIN_MAX_METADATA_SIZE;
-				/* FIXME: drop remaining segs */
-			}
+	/* FIXME: more complex target may need more tweaks */
+	dm_list_iterate_items(mseg, &seg->metadata->props.segs) {
+		devsize += mseg->size;
+		if (devsize > DM_THIN_MAX_METADATA_SIZE) {
+			log_debug_activation("Ignoring %" PRIu64 " of device.",
+					     devsize - DM_THIN_MAX_METADATA_SIZE);
+			mseg->size -= (devsize - DM_THIN_MAX_METADATA_SIZE);
+			devsize = DM_THIN_MAX_METADATA_SIZE;
+			/* FIXME: drop remaining segs */
 		}
+	}

 	if (!(seg->pool = dm_tree_find_node_by_uuid(node->dtree, pool_uuid))) {
 		log_error("Missing pool uuid %s.", pool_uuid);
@ -4321,9 +4143,63 @@ void dm_tree_node_set_callback(struct dm_tree_node *dnode,
 	dnode->callback_data = data;
 }

+#if defined(__GNUC__)
+/*
+ * Backward compatible implementations.
+ *
+ * Keep these at the end of the file to make sure that
+ * no code in this file accidentally calls it.
+ */
+
+/* Backward compatible dm_tree_node_size_changed() implementations. */
+int dm_tree_node_size_changed_base(const struct dm_tree_node *dnode);
+int dm_tree_node_size_changed_base(const struct dm_tree_node *dnode)
+{
+	/* Base does not make difference between smaller and bigger */
+	return dm_tree_node_size_changed(dnode) ? 1 : 0;
+}
+
+/*
+ * Retain ABI compatibility after adding the DM_CACHE_FEATURE_METADATA2
+ * in version 1.02.138.
+ *
+ * Binaries compiled against version 1.02.138 onwards will use
+ * the new function dm_tree_node_add_cache_target which detects unknown
+ * feature flags and returns error for them.
+ */
+int dm_tree_node_add_cache_target_base(struct dm_tree_node *node,
+				       uint64_t size,
+				       uint64_t feature_flags, /* DM_CACHE_FEATURE_* */
+				       const char *metadata_uuid,
+				       const char *data_uuid,
+				       const char *origin_uuid,
+				       const char *policy_name,
+				       const struct dm_config_node *policy_settings,
+				       uint32_t data_block_size);
+int dm_tree_node_add_cache_target_base(struct dm_tree_node *node,
+				       uint64_t size,
+				       uint64_t feature_flags,
+				       const char *metadata_uuid,
+				       const char *data_uuid,
+				       const char *origin_uuid,
+				       const char *policy_name,
+				       const struct dm_config_node *policy_settings,
+				       uint32_t data_block_size)
+{
+	/* Old version supported only these FEATURE bits, others were ignored so masked them */
+	static const uint64_t _mask =
+		DM_CACHE_FEATURE_WRITEBACK |
+		DM_CACHE_FEATURE_WRITETHROUGH |
+		DM_CACHE_FEATURE_PASSTHROUGH;
+
+	return dm_tree_node_add_cache_target(node, size, feature_flags & _mask,
+					     metadata_uuid, data_uuid, origin_uuid,
+					     policy_name, policy_settings, 0, 0, 0, 0, data_block_size);
+}
+#endif
+
 int dm_tree_node_add_vdo_target(struct dm_tree_node *node,
 				uint64_t size,
-				const char *vdo_pool_name,
 				const char *data_uuid,
 				uint64_t data_size,
 				const struct dm_vdo_target_params *vtp)
@ -4345,7 +4221,7 @@ int dm_tree_node_add_vdo_target(struct dm_tree_node *node,
 		return_0;

 	seg->vdo_params = *vtp;
-	seg->vdo_name = vdo_pool_name;
+	seg->vdo_name = node->name;
 	seg->vdo_data_size = data_size;

 	node->props.send_messages = 2;
--- a/device_mapper/libdm-file.c
+++ b/device_mapper/libdm-file.c
@ -110,7 +110,7 @@ int dm_is_empty_dir(const char *dir)
 	DIR *d;

 	if (!(d = opendir(dir))) {
-		log_sys_debug("opendir", dir);
+		log_sys_error("opendir", dir);
 		return 0;
 	}

@ -119,7 +119,7 @@ int dm_is_empty_dir(const char *dir)
 			break;

 	if (closedir(d))
-		log_sys_debug("closedir", dir);
+		log_sys_error("closedir", dir);

 	return dirent ? 0 : 1;
 }
--- a/device_mapper/libdm-report.c
+++ b/device_mapper/libdm-report.c
@ -492,7 +492,7 @@ static int _report_field_string_list(struct dm_report *rh,
 		delimiter = ",";
 	delimiter_len = strlen(delimiter);

-	i = pos = 0;
+	i = pos = len = 0;
 	dm_list_iterate_items(sl, data) {
 		arr[i].str = sl->str;
 		if (!sort) {
@ -749,11 +749,10 @@ static void _display_fields_more(struct dm_report *rh,
 			id_len = strlen(type->prefix) + 3;

 	for (f = 0; fields[f].report_fn; f++) {
-		if (!(type = _find_type(rh, fields[f].type))) {
-			log_debug(INTERNAL_ERROR "Field type undefined.");
-			continue;
-		}
-		desc = (type->desc) ? : " ";
+		if ((type = _find_type(rh, fields[f].type)) && type->desc)
+			desc = type->desc;
+		else
+			desc = " ";
 		if (desc != last_desc) {
 			if (*last_desc)
 				log_warn(" ");
@ -2332,7 +2331,7 @@ static const char *_reserved_name(struct dm_report *rh,
 				  uint32_t field_num, const char *s, size_t len)
 {
 	dm_report_reserved_handler handler;
-	const char *canonical_name = NULL;
+	const char *canonical_name;
 	const char **name;
 	char *tmp_s;
 	char c;
@ -2474,7 +2473,7 @@ dm_percent_t dm_make_percent(uint64_t numerator, uint64_t denominator)

 int dm_report_value_cache_set(struct dm_report *rh, const char *name, const void *data)
 {
-	if (!rh->value_cache && (!(rh->value_cache = dm_hash_create(63)))) {
+	if (!rh->value_cache && (!(rh->value_cache = dm_hash_create(64)))) {
 		log_error("Failed to create cache for values used during reporting.");
 		return 0;
 	}
@ -3774,7 +3773,7 @@ static struct selection_node *_parse_selection(struct dm_report *rh,
 	struct field_selection *fs;
 	struct selection_node *sn;
 	const char *ws, *we; /* field name */
-	const char *vs = NULL, *ve = NULL; /* value */
+	const char *vs, *ve; /* value */
 	const char *last;
 	uint32_t flags, field_num;
 	int implicit;
@ -3910,7 +3909,7 @@ static struct selection_node *_parse_ex(struct dm_report *rh,
 	static const char _pe_expected_msg[] = "Syntax error: right parenthesis expected at \'%s\'";
 	struct selection_node *sn = NULL;
 	uint32_t t;
-	const char *tmp = NULL;
+	const char *tmp;

 	t = _tok_op_log(s, next, SEL_MODIFIER_NOT | SEL_PRECEDENCE_PS);
 	if (t == SEL_MODIFIER_NOT) {
@ -3956,7 +3955,7 @@ static struct selection_node *_parse_and_ex(struct dm_report *rh,
 					    struct selection_node *and_sn)
 {
 	struct selection_node *n;
-	const char *tmp = NULL;
+	const char *tmp;

 	n = _parse_ex(rh, s, next);
 	if (!n)
@ -3988,7 +3987,7 @@ static struct selection_node *_parse_or_ex(struct dm_report *rh,
 					   struct selection_node *or_sn)
 {
 	struct selection_node *n;
-	const char *tmp = NULL;
+	const char *tmp;

 	n = _parse_and_ex(rh, s, next, NULL);
 	if (!n)
--- a/device_mapper/libdm-targets.c
+++ b/device_mapper/libdm-targets.c
@ -296,8 +296,6 @@ int dm_get_status_cache(struct dm_pool *mem, const char *params,
 			s->feature_flags |= DM_CACHE_FEATURE_PASSTHROUGH;
 		else if (!strncmp(p, "metadata2 ", 10))
 			s->feature_flags |= DM_CACHE_FEATURE_METADATA2;
-		else if (!strncmp(p, "no_discard_passdown ", 20))
-			s->feature_flags |= DM_CACHE_FEATURE_NO_DISCARD_PASSDOWN;
 		else
 			log_error("Unknown feature in status: %s", params);

@ -366,8 +364,8 @@ int dm_get_status_writecache(struct dm_pool *mem, const char *params,
 	if (!(s = dm_pool_zalloc(mem, sizeof(struct dm_status_writecache))))
 		return_0;

-	if (sscanf(params, "%llu %llu %llu %llu",
-		   (unsigned long long *)&s->error,
+	if (sscanf(params, "%u %llu %llu %llu",
+		   &s->error,
 		   (unsigned long long *)&s->total_blocks,
 		   (unsigned long long *)&s->free_blocks,
 		   (unsigned long long *)&s->writeback_blocks) != 4) {
@ -380,33 +378,6 @@ int dm_get_status_writecache(struct dm_pool *mem, const char *params,
 	return 1;
 }

-int dm_get_status_integrity(struct dm_pool *mem, const char *params,
-			     struct dm_status_integrity **status)
-{
-	struct dm_status_integrity *s;
-	char recalc_str[16] = "\0";
-
-	if (!(s = dm_pool_zalloc(mem, sizeof(*s))))
-		return_0;
-
-	if (sscanf(params, "%llu %llu %s",
-		   (unsigned long long *)&s->number_of_mismatches,
-		   (unsigned long long *)&s->provided_data_sectors,
-		   recalc_str) != 3) {
-		log_error("Failed to parse integrity params: %s.", params);
-		dm_pool_free(mem, s);
-		return 0;
-	}
-
-	if (recalc_str[0] == '-')
-		s->recalc_sector = 0;
-	else
-		s->recalc_sector = strtoull(recalc_str, NULL, 0);
-
-	*status = s;
-	return 1;
-}
-
 int parse_thin_pool_status(const char *params, struct dm_status_thin_pool *s)
 {
 	int pos;
--- a/device_mapper/misc/dm-ioctl.h
+++ b/device_mapper/misc/dm-ioctl.h
@ -1,7 +1,6 @@
-/* SPDX-License-Identifier: LGPL-2.0+ WITH Linux-syscall-note */
 /*
 * Copyright (C) 2001 - 2003 Sistina Software (UK) Limited.
- * Copyright (C) 2004 - 2021 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2004 - 2017 Red Hat, Inc. All rights reserved.
 *
 * This file is released under the LGPL.
 */
@ -195,22 +194,8 @@ struct dm_name_list {
 	uint32_t next;		/* offset to the next record from
 				   the _start_ of this */
 	char name[0];
-
-	/*
-	 * The following members can be accessed by taking a pointer that
-	 * points immediately after the terminating zero character in "name"
-	 * and aligning this pointer to next 8-byte boundary.
-	 * Uuid is present if the flag DM_NAME_LIST_FLAG_HAS_UUID is set.
-	 *
-	 * uint32_t event_nr;
-	 * uint32_t flags;
-	 * char uuid[0];
-	 */
 };

-#define DM_NAME_LIST_FLAG_HAS_UUID		1
-#define DM_NAME_LIST_FLAG_DOESNT_HAVE_UUID	2
-
 /*
 * Used to retrieve the target versions
 */
@ -259,7 +244,6 @@ enum {
 	DM_TARGET_MSG_CMD,
 	DM_DEV_SET_GEOMETRY_CMD,
 	DM_DEV_ARM_POLL_CMD,
-	DM_GET_TARGET_VERSION_CMD,
 };

 #define DM_IOCTL 0xfd
@ -286,12 +270,10 @@ enum {
 #define DM_TARGET_MSG	 _IOWR(DM_IOCTL, DM_TARGET_MSG_CMD, struct dm_ioctl)
 #define DM_DEV_SET_GEOMETRY	_IOWR(DM_IOCTL, DM_DEV_SET_GEOMETRY_CMD, struct dm_ioctl)

-#define DM_GET_TARGET_VERSION	_IOWR(DM_IOCTL, DM_GET_TARGET_VERSION_CMD, struct dm_ioctl)
-
 #define DM_VERSION_MAJOR	4
-#define DM_VERSION_MINOR	45
+#define DM_VERSION_MINOR	36
 #define DM_VERSION_PATCHLEVEL	0
-#define DM_VERSION_EXTRA	"-ioctl (2021-03-22)"
+#define DM_VERSION_EXTRA	"-ioctl (2017-06-09)"

 /* Status bits */
 #define DM_READONLY_FLAG	(1 << 0) /* In/Out */
@ -379,10 +361,4 @@ enum {
 */
 #define DM_INTERNAL_SUSPEND_FLAG	(1 << 18) /* Out */

-/*
- * If set, returns in the in buffer passed by UM, the raw table information
- * that would be measured by IMA subsystem on device state change.
- */
-#define DM_IMA_MEASUREMENT_FLAG	(1 << 19) /* In */
-
 #endif				/* _LINUX_DM_IOCTL_H */
--- a/device_mapper/mm/pool.c
+++ b/device_mapper/mm/pool.c
@ -98,7 +98,7 @@ void dm_pools_check_leaks(void)
 			  p->orig_pool,
 			  p->name, p->stats.bytes);
 #else
-		log_error(" [%p] %s", (void *)p, p->name);
+		log_error(" [%p] %s", p, p->name);
 #endif
 	}
 	pthread_mutex_unlock(&_dm_pools_mutex);
--- a/device_mapper/vdo/target.h
+++ b/device_mapper/vdo/target.h
@ -69,13 +69,12 @@ bool dm_vdo_status_parse(struct dm_pool *mem, const char *input,
 enum dm_vdo_write_policy {
 	DM_VDO_WRITE_POLICY_AUTO = 0,
 	DM_VDO_WRITE_POLICY_SYNC,
-	DM_VDO_WRITE_POLICY_ASYNC,
-	DM_VDO_WRITE_POLICY_ASYNC_UNSAFE
+	DM_VDO_WRITE_POLICY_ASYNC
 };

 // FIXME: review whether we should use the createParams from the userlib
 struct dm_vdo_target_params {
-	uint32_t minimum_io_size;       // in sectors
+	uint32_t minimum_io_size;
 	uint32_t block_map_cache_size_mb;
 	uint32_t block_map_era_length;	// format period

--- a/device_mapper/vdo/vdo_target.c
+++ b/device_mapper/vdo/vdo_target.c
@ -23,9 +23,8 @@ bool dm_vdo_validate_target_params(const struct dm_vdo_target_params *vtp,
 {
 	bool valid = true;

-	/* 512 or 4096 bytes only ATM */
-	if ((vtp->minimum_io_size != 1) &&
-	    (vtp->minimum_io_size != 8)) {
+	if ((vtp->minimum_io_size != 512) &&
+	    (vtp->minimum_io_size != 4096)) {
 		log_error("VDO minimum io size %u is unsupported.",
 			  vtp->minimum_io_size);
 		valid = false;
@ -100,7 +99,6 @@ bool dm_vdo_validate_target_params(const struct dm_vdo_target_params *vtp,
 	switch (vtp->write_policy) {
 	case DM_VDO_WRITE_POLICY_SYNC:
 	case DM_VDO_WRITE_POLICY_ASYNC:
-	case DM_VDO_WRITE_POLICY_ASYNC_UNSAFE:
 	case DM_VDO_WRITE_POLICY_AUTO:
 		break;
 	default:
--- a/doc/kernel/integrity.txt
+++ b/doc/kernel/integrity.txt
@ -94,7 +94,7 @@ journal_watermark:number

 commit_time:number
 	Commit time in milliseconds. When this time passes, the journal is
-	written. The journal is also written immediately if the FLUSH
+	written. The journal is also written immediatelly if the FLUSH
 	request is received.

 internal_hash:algorithm(:key)	(the key is optional)
--- a/include/.gitignore
+++ b/include/.gitignore
@ -1,3 +1 @@
 *.h
-.symlinks
-.symlinks_created
--- a/include/configure.h.in
+++ b/include/configure.h.in
@ -1,8 +1,5 @@
 /* include/configure.h.in.  Generated from configure.ac by autoheader.  */

-/* Define to 1 to include code that uses libsystemd machine-id apis. */
-#undef APP_MACHINEID_SUPPORT
-
 /* Define to 1 to use libblkid detection of signatures when wiping. */
 #undef BLKID_WIPING_SUPPORT

@ -90,9 +87,6 @@
 /* Use blkid wiping by default. */
 #undef DEFAULT_USE_BLKID_WIPING

-/* Default for lvm.conf use_devicefile. */
-#undef DEFAULT_USE_DEVICES_FILE
-
 /* Use lvmlockd by default. */
 #undef DEFAULT_USE_LVMLOCKD

@ -132,15 +126,9 @@
 /* Library version */
 #undef DM_LIB_VERSION

-/* Define to 1 to include the LVM editline shell. */
-#undef EDITLINE_SUPPORT
-
 /* Path to fsadm binary. */
 #undef FSADM_PATH

-/* Define to use GNU versioning in the shared library. */
-#undef GNU_SYMVER
-
 /* Define to 1 if you have the `alarm' function. */
 #undef HAVE_ALARM

@ -163,9 +151,6 @@
 /* Define to 1 if you have the `atexit' function. */
 #undef HAVE_ATEXIT

-/* Define if ioctl BLKZEROOUT can be used for device zeroing. */
-#undef HAVE_BLKZEROOUT
-
 /* Define to 1 if canonicalize_file_name is available. */
 #undef HAVE_CANONICALIZE_FILE_NAME

@ -191,18 +176,12 @@
 /* Define to 1 if you don't have `vprintf' but do have `_doprnt.' */
 #undef HAVE_DOPRNT

-/* Define to 1 if you have the <editline/readline.h> header file. */
-#undef HAVE_EDITLINE_READLINE_H
-
 /* Define to 1 if you have the <errno.h> header file. */
 #undef HAVE_ERRNO_H

 /* Define to 1 if you have the <fcntl.h> header file. */
 #undef HAVE_FCNTL_H

-/* Define to 1 if you have the `ffs' function. */
-#undef HAVE_FFS
-
 /* Define to 1 if you have the <float.h> header file. */
 #undef HAVE_FLOAT_H

@ -313,12 +292,6 @@
 /* Define to 1 if you have the <paths.h> header file. */
 #undef HAVE_PATHS_H

-/* Define to 1 if you have the `prlimit' function. */
-#undef HAVE_PRLIMIT
-
-/* Define to 1 if you have the `pselect' function. */
-#undef HAVE_PSELECT
-
 /* Define to 1 if the system has the type `ptrdiff_t'. */
 #undef HAVE_PTRDIFF_T

@ -528,9 +501,6 @@
 /* valgrind.h found */
 #undef HAVE_VALGRIND

-/* Define to 1 if you have the `versionsort' function. */
-#undef HAVE_VERSIONSORT
-
 /* Define to 1 if you have the `vfork' function. */
 #undef HAVE_VFORK

@ -555,27 +525,15 @@
 /* Define to 1 if the system has the `__builtin_clzll' built-in function */
 #undef HAVE___BUILTIN_CLZLL

-/* Define to 1 if the system has the `__builtin_ffs' built-in function */
-#undef HAVE___BUILTIN_FFS
-
-/* Define to 1 to include built-in support for integrity. */
-#undef INTEGRITY_INTERNAL
-
 /* Internalization package */
 #undef INTL_PACKAGE

 /* Locale-dependent data */
 #undef LOCALEDIR

-/* Define to 1 to include code that uses lvmlockd dlm control option. */
-#undef LOCKDDLM_CONTROL_SUPPORT
-
 /* Define to 1 to include code that uses lvmlockd dlm option. */
 #undef LOCKDDLM_SUPPORT

-/* Define to 1 to include code that uses lvmlockd IDM option. */
-#undef LOCKDIDM_SUPPORT
-
 /* Define to 1 to include code that uses lvmlockd sanlock option. */
 #undef LOCKDSANLOCK_SUPPORT

@ -586,9 +544,6 @@
 /* Path to lvmconfig binary. */
 #undef LVMCONFIG_PATH

-/* Path to lvm_import_vdo script. */
-#undef LVMIMPORTVDO_PATH
-
 /* Path to lvmlockd pidfile. */
 #undef LVMLOCKD_PIDFILE

@ -671,9 +626,6 @@
 /* Define to 1 if strerror_r returns char *. */
 #undef STRERROR_R_CHAR_P

-/* Define to 1 to include code that uses systemd journal. */
-#undef SYSTEMD_JOURNAL_SUPPORT
-
 /* Path to testsuite data */
 #undef TESTSUITE_DATA

--- a/lib/Makefile.in
+++ b/lib/Makefile.in
@ -15,13 +15,11 @@
 srcdir = @srcdir@
 top_srcdir = @top_srcdir@
 top_builddir = @top_builddir@
-abs_srcdir = @abs_srcdir@

 SOURCES =\
 	activate/activate.c \
 	cache/lvmcache.c \
 	writecache/writecache.c \
-	integrity/integrity.c \
 	cache_segtype/cache.c \
 	commands/toolcontext.c \
 	config/config.c \
@ -30,11 +28,9 @@ SOURCES =\
 	device/bcache.c \
 	device/bcache-utils.c \
 	device/dev-cache.c \
-	device/device_id.c \
 	device/dev-ext.c \
 	device/dev-io.c \
 	device/dev-md.c \
-	device/dev-mpath.c \
 	device/dev-swap.c \
 	device/dev-type.c \
 	device/dev-luks.c \
@ -55,7 +51,6 @@ SOURCES =\
 	filters/filter-usable.c \
 	filters/filter-internal.c \
 	filters/filter-signature.c \
-	filters/filter-deviceid.c \
 	format_text/archive.c \
 	format_text/archiver.c \
 	format_text/export.c \
@ -71,16 +66,14 @@ SOURCES =\
 	locking/locking.c \
 	log/log.c \
 	metadata/cache_manip.c \
-	metadata/writecache_manip.c \
-	metadata/integrity_manip.c \
 	metadata/lv.c \
 	metadata/lv_manip.c \
 	metadata/merge.c \
 	metadata/metadata.c \
+	metadata/read.c \
 	metadata/mirror.c \
 	metadata/pool_manip.c \
 	metadata/pv.c \
-	metadata/pv_list.c \
 	metadata/pv_manip.c \
 	metadata/pv_map.c \
 	metadata/raid_manip.c \
--- a/lib/activate/activate.c
+++ b/lib/activate/activate.c
--- a/lib/activate/activate.h
+++ b/lib/activate/activate.h
@ -39,7 +39,6 @@ typedef enum {
 	SEG_STATUS_THIN_POOL,
 	SEG_STATUS_VDO_POOL,
 	SEG_STATUS_WRITECACHE,
-	SEG_STATUS_INTEGRITY,
 	SEG_STATUS_UNKNOWN
 } lv_seg_status_type_t;

@ -54,7 +53,6 @@ struct lv_seg_status {
 		struct dm_status_thin *thin;
 		struct dm_status_thin_pool *thin_pool;
 		struct dm_status_writecache *writecache;
-		struct dm_status_integrity *integrity;
 		struct lv_status_vdo vdo_pool;
 	};
 };
@ -146,8 +144,8 @@ int revert_lv(struct cmd_context *cmd, const struct logical_volume *lv);
 */
 int lv_info(struct cmd_context *cmd, const struct logical_volume *lv, int use_layer,
 	    struct lvinfo *info, int with_open_count, int with_read_ahead);
-int lv_info_with_name_check(struct cmd_context *cmd, const struct logical_volume *lv,
-			    int use_layer, struct lvinfo *info);
+int lv_info_by_lvid(struct cmd_context *cmd, const char *lvid_s, int use_layer,
+		    struct lvinfo *info, int with_open_count, int with_read_ahead);

 /*
 * Returns 1 if lv_info_and_seg_status structure has been populated,
@ -188,15 +186,16 @@ int lv_raid_dev_health(const struct logical_volume *lv, char **dev_health);
 int lv_raid_mismatch_count(const struct logical_volume *lv, uint64_t *cnt);
 int lv_raid_sync_action(const struct logical_volume *lv, char **sync_action);
 int lv_raid_message(const struct logical_volume *lv, const char *msg);
-int lv_raid_status(const struct logical_volume *lv, struct lv_status_raid **status);
 int lv_writecache_message(const struct logical_volume *lv, const char *msg);
 int lv_cache_status(const struct logical_volume *cache_lv,
 		    struct lv_status_cache **status);
+int lv_thin_pool_percent(const struct logical_volume *lv, int metadata,
+			 dm_percent_t *percent);
+int lv_thin_percent(const struct logical_volume *lv, int mapped,
+		    dm_percent_t *percent);
+int lv_thin_pool_transaction_id(const struct logical_volume *lv,
+				uint64_t *transaction_id);
 int lv_thin_device_id(const struct logical_volume *lv, uint32_t *device_id);
-int lv_thin_status(const struct logical_volume *lv, int flush,
-		   struct lv_status_thin **status);
-int lv_thin_pool_status(const struct logical_volume *lv, int flush,
-			struct lv_status_thin_pool **status);
 int lv_vdo_pool_status(const struct logical_volume *lv, int flush,
 		       struct lv_status_vdo **status);
 int lv_vdo_pool_percent(const struct logical_volume *lv, dm_percent_t *percent);
@ -209,8 +208,6 @@ int lvs_in_vg_opened(const struct volume_group *vg);

 int lv_is_active(const struct logical_volume *lv);

-int lv_passes_readonly_filter(const struct logical_volume *lv);
-
 /* Check is any component LV is active */
 const struct logical_volume *lv_component_is_active(const struct logical_volume *lv);
 const struct logical_volume *lv_holder_is_active(const struct logical_volume *lv);
@ -254,7 +251,7 @@ struct dev_usable_check_params {
 * Returns 1 if mapped device is not suspended, blocked or
 * is using a reserved name.
 */
-int device_is_usable(struct device *dev, struct dev_usable_check_params check, int *is_lv);
+int device_is_usable(struct device *dev, struct dev_usable_check_params check);

 /*
 * Declaration moved here from fs.h to keep header fs.h hidden
@ -263,7 +260,6 @@ void fs_unlock(void);

 #define TARGET_NAME_CACHE "cache"
 #define TARGET_NAME_WRITECACHE "writecache"
-#define TARGET_NAME_INTEGRITY "integrity"
 #define TARGET_NAME_ERROR "error"
 #define TARGET_NAME_ERROR_OLD "erro"	/* Truncated in older kernels */
 #define TARGET_NAME_LINEAR "linear"
@ -281,7 +277,6 @@ void fs_unlock(void);
 #define MODULE_NAME_CLUSTERED_MIRROR "clog"
 #define MODULE_NAME_CACHE TARGET_NAME_CACHE
 #define MODULE_NAME_WRITECACHE TARGET_NAME_WRITECACHE
-#define MODULE_NAME_INTEGRITY TARGET_NAME_INTEGRITY
 #define MODULE_NAME_ERROR TARGET_NAME_ERROR
 #define MODULE_NAME_LOG_CLUSTERED "log-clustered"
 #define MODULE_NAME_LOG_USERSPACE "log-userspace"
--- a/lib/activate/dev_manager.c
+++ b/lib/activate/dev_manager.c
--- a/lib/activate/dev_manager.h
+++ b/lib/activate/dev_manager.h
@ -47,7 +47,7 @@ void dev_manager_exit(void);
 */
 int dev_manager_info(struct cmd_context *cmd, const struct logical_volume *lv,
 		     const char *layer,
-		     int with_open_count, int with_read_ahead, int with_name_check,
+		     int with_open_count, int with_read_ahead,
 		     struct dm_info *dminfo, uint32_t *read_ahead,
 		     struct lv_seg_status *seg_status);

@ -59,7 +59,7 @@ int dev_manager_mirror_percent(struct dev_manager *dm,
 			       dm_percent_t *percent, uint32_t *event_nr);
 int dev_manager_raid_status(struct dev_manager *dm,
 			    const struct logical_volume *lv,
-			    struct lv_status_raid **status, int *exists);
+			    struct dm_status_raid **status);
 int dev_manager_raid_message(struct dev_manager *dm,
 			     const struct logical_volume *lv,
 			     const char *msg);
@ -68,19 +68,24 @@ int dev_manager_writecache_message(struct dev_manager *dm,
                                   const char *msg);
 int dev_manager_cache_status(struct dev_manager *dm,
 			     const struct logical_volume *lv,
-			     struct lv_status_cache **status, int *exists);
-int dev_manager_thin_status(struct dev_manager *dm,
-			    const struct logical_volume *lv, int flush,
-			    struct lv_status_thin **status, int *exists);
+			     struct lv_status_cache **status);
+int dev_manager_thin_pool_status(struct dev_manager *dm,
+				 const struct logical_volume *lv,
+				 struct dm_status_thin_pool **status,
+				 int flush);
+int dev_manager_thin_pool_percent(struct dev_manager *dm,
+				  const struct logical_volume *lv,
+				  int metadata, dm_percent_t *percent);
+int dev_manager_thin_percent(struct dev_manager *dm,
+			     const struct logical_volume *lv,
+			     int mapped, dm_percent_t *percent);
 int dev_manager_thin_device_id(struct dev_manager *dm,
 			       const struct logical_volume *lv,
-			       uint32_t *device_id, int *exist);
-int dev_manager_thin_pool_status(struct dev_manager *dm,
-				 const struct logical_volume *lv, int flush,
-				 struct lv_status_thin_pool **status, int *exists);
+			       uint32_t *device_id);
 int dev_manager_vdo_pool_status(struct dev_manager *dm,
-				const struct logical_volume *lv, int flush,
-				struct lv_status_vdo **status, int *exists);
+				const struct logical_volume *lv,
+				struct lv_status_vdo **vdo_status,
+				int flush);
 int dev_manager_suspend(struct dev_manager *dm, const struct logical_volume *lv,
 			struct lv_activate_opts *laopts, int lockfs, int flush_required);
 int dev_manager_activate(struct dev_manager *dm, const struct logical_volume *lv,
@ -104,4 +109,12 @@ int dev_manager_remove_dm_major_minor(uint32_t major, uint32_t minor);

 int dev_manager_check_prefix_dm_major_minor(uint32_t major, uint32_t minor, const char *prefix);

+int get_cache_vol_meta_data(struct cmd_context *cmd,
+                                    struct logical_volume *lv,
+                                    struct logical_volume *pool_lv,
+                                    struct dm_info *info_meta, struct dm_info *info_data);
+
+int remove_cache_vol_meta_data(struct cmd_context *cmd,
+                                       struct dm_info *info_meta, struct dm_info *info_data);
+
 #endif
--- a/lib/activate/fs.c
+++ b/lib/activate/fs.c
@ -76,7 +76,7 @@ static int _rm_dir(const char *dev_dir, const char *vg_name)
 		return 0;
 	}

-	if (dir_exists(vg_path) && dm_is_empty_dir(vg_path)) {
+	if (dir_exists(vg_path) && is_empty_dir(vg_path)) {
 		log_very_verbose("Removing directory %s", vg_path);
 		rmdir(vg_path);
 	}
@ -93,7 +93,7 @@ static void _rm_blks(const char *dir)
 	DIR *d;

 	if (!(d = opendir(dir))) {
-		log_sys_debug("opendir", dir);
+		log_sys_error("opendir", dir);
 		return;
 	}

@ -104,7 +104,7 @@ static void _rm_blks(const char *dir)
 			continue;

 		if (dm_snprintf(path, sizeof(path), "%s/%s", dir, name) == -1) {
-			log_debug("Couldn't create path for %s.", name);
+			log_error("Couldn't create path for %s", name);
 			continue;
 		}

@ -113,12 +113,12 @@ static void _rm_blks(const char *dir)
 				continue;
 			log_very_verbose("Removing %s", path);
 			if (unlink(path) < 0)
-				log_sys_debug("unlink", path);
+				log_sys_error("unlink", path);
 		}
 	}

 	if (closedir(d))
-		log_sys_debug("closedir", dir);
+		log_sys_error("closedir", dir);
 }

 static int _mk_link(const char *dev_dir, const char *vg_name,
@ -169,7 +169,7 @@ static int _mk_link(const char *dev_dir, const char *vg_name,

 			log_very_verbose("Removing %s", lvm1_group_path);
 			if (unlink(lvm1_group_path) < 0)
-				log_sys_debug("unlink", lvm1_group_path);
+				log_sys_error("unlink", lvm1_group_path);
 		}
 	}

--- a/lib/cache/lvmcache.c
+++ b/lib/cache/lvmcache.c
--- a/lib/cache/lvmcache.h
+++ b/lib/cache/lvmcache.h
@ -41,13 +41,18 @@ struct lvmcache_vginfo;

 /*
 * vgsummary represents a summary of the VG that is read
- * without a lock during label scan.  It's used to populate
- * basic lvmcache vginfo/info during label scan prior to
- * vg_read().
+ * without a lock.  The info does not come through vg_read(),
+ * but through reading mdas.  It provides information about
+ * the VG that is needed to lock the VG and then read it fully
+ * with vg_read(), after which the VG summary should be checked
+ * against the full VG metadata to verify it was correct (since
+ * it was read without a lock.)
+ *
+ * Once read, vgsummary information is saved in lvmcache_vginfo.
 */
 struct lvmcache_vgsummary {
 	const char *vgname;
-	char vgid[ID_LEN + 1];
+	struct id vgid;
 	uint64_t vgstatus;
 	char *creation_host;
 	const char *system_id;
@ -58,8 +63,6 @@ struct lvmcache_vgsummary {
 	int mda_num; /* 1 = summary from mda1, 2 = summary from mda2 */
 	unsigned mda_ignored:1;
 	unsigned zero_offset:1;
-	unsigned mismatch:1; /* lvmcache sets if this summary differs from previous values */
-	struct dm_list pvsummaries;
 };

 int lvmcache_init(struct cmd_context *cmd);
@ -68,20 +71,18 @@ void lvmcache_destroy(struct cmd_context *cmd, int retain_orphans, int reset);

 int lvmcache_label_scan(struct cmd_context *cmd);
 int lvmcache_label_rescan_vg(struct cmd_context *cmd, const char *vgname, const char *vgid);
-int lvmcache_label_rescan_vg_rw(struct cmd_context *cmd, const char *vgname, const char *vgid);
-int lvmcache_label_reopen_vg_rw(struct cmd_context *cmd, const char *vgname, const char *vgid);

 /* Add/delete a device */
-struct lvmcache_info *lvmcache_add(struct cmd_context *cmd, struct labeller *labeller, const char *pvid,
+struct lvmcache_info *lvmcache_add(struct labeller *labeller, const char *pvid,
                                   struct device *dev, uint64_t label_sector,
                                   const char *vgname, const char *vgid,
                                   uint32_t vgstatus, int *is_duplicate);
-int lvmcache_add_orphan_vginfo(struct cmd_context *cmd, const char *vgname, struct format_type *fmt);
+int lvmcache_add_orphan_vginfo(const char *vgname, struct format_type *fmt);
 void lvmcache_del(struct lvmcache_info *info);
 void lvmcache_del_dev(struct device *dev);

 /* Update things */
-int lvmcache_update_vgname_and_id(struct cmd_context *cmd, struct lvmcache_info *info,
+int lvmcache_update_vgname_and_id(struct lvmcache_info *info,
 				  struct lvmcache_vgsummary *vgsummary);
 int lvmcache_update_vg_from_read(struct volume_group *vg, unsigned precommitted);
 int lvmcache_update_vg_from_write(struct volume_group *vg);
@ -90,23 +91,29 @@ void lvmcache_lock_vgname(const char *vgname, int read_only);
 void lvmcache_unlock_vgname(const char *vgname);

 /* Queries */
+const struct format_type *lvmcache_fmt_from_vgname(struct cmd_context *cmd, const char *vgname, const char *vgid, unsigned revalidate_labels);
 int lvmcache_lookup_mda(struct lvmcache_vgsummary *vgsummary);

+/* Decrement and test if there are still vg holders in vginfo. */
+int lvmcache_vginfo_holders_dec_and_test_for_zero(struct lvmcache_vginfo *vginfo);
+
 struct lvmcache_vginfo *lvmcache_vginfo_from_vgname(const char *vgname,
 					   const char *vgid);
 struct lvmcache_vginfo *lvmcache_vginfo_from_vgid(const char *vgid);
 struct lvmcache_info *lvmcache_info_from_pvid(const char *pvid, struct device *dev, int valid_only);
-struct lvmcache_info *lvmcache_info_from_pv_id(const struct id *pv_id, struct device *dev, int valid_only);
 const char *lvmcache_vgname_from_vgid(struct dm_pool *mem, const char *vgid);
 const char *lvmcache_vgid_from_vgname(struct cmd_context *cmd, const char *vgname);
-struct device *lvmcache_device_from_pv_id(struct cmd_context *cmd, const struct id *pv_id, uint64_t *label_sector);
+struct device *lvmcache_device_from_pvid(struct cmd_context *cmd, const struct id *pvid, uint64_t *label_sector);
 const char *lvmcache_vgname_from_info(struct lvmcache_info *info);
 const struct format_type *lvmcache_fmt_from_info(struct lvmcache_info *info);
+int lvmcache_vgs_locked(void);

-int lvmcache_get_vgnameids(struct cmd_context *cmd,
-                           struct dm_list *vgnameids,
-                           const char *only_this_vgname,
-                           int include_internal);
+int lvmcache_get_vgnameids(struct cmd_context *cmd, int include_internal,
+                          struct dm_list *vgnameids);
+
+/* Returns list of struct dm_str_list containing pool-allocated copy of pvids */
+struct dm_list *lvmcache_get_pvids(struct cmd_context *cmd, const char *vgname,
+				const char *vgid);

 void lvmcache_drop_metadata(const char *vgname, int drop_precommitted);
 void lvmcache_commit_metadata(const char *vgname);
@ -160,18 +167,19 @@ int lvmcache_foreach_pv(struct lvmcache_vginfo *vginfo,
 uint64_t lvmcache_device_size(struct lvmcache_info *info);
 void lvmcache_set_device_size(struct lvmcache_info *info, uint64_t size);
 struct device *lvmcache_device(struct lvmcache_info *info);
+int lvmcache_is_orphan(struct lvmcache_info *info);
 unsigned lvmcache_mda_count(struct lvmcache_info *info);
+int lvmcache_vgid_is_cached(const char *vgid);
 uint64_t lvmcache_smallest_mda_size(struct lvmcache_info *info);

-bool lvmcache_has_duplicate_devs(void);
-void lvmcache_del_dev_from_duplicates(struct device *dev);
-bool lvmcache_dev_is_unused_duplicate(struct device *dev);
-int lvmcache_pvid_in_unused_duplicates(const char *pvid);
-int lvmcache_get_unused_duplicates(struct cmd_context *cmd, struct dm_list *head);
-int vg_has_duplicate_pvs(struct volume_group *vg);
-
+int lvmcache_found_duplicate_pvs(void);
 int lvmcache_found_duplicate_vgnames(void);
-bool lvmcache_has_duplicate_local_vgname(const char *vgid, const char *vgname);
+
+void lvmcache_pvscan_duplicate_check(struct cmd_context *cmd);
+
+int lvmcache_get_unused_duplicate_devs(struct cmd_context *cmd, struct dm_list *head);
+
+int vg_has_duplicate_pvs(struct volume_group *vg);

 int lvmcache_contains_lock_type_sanlock(struct cmd_context *cmd);

@ -180,18 +188,40 @@ void lvmcache_get_max_name_lengths(struct cmd_context *cmd,

 int lvmcache_vg_is_foreign(struct cmd_context *cmd, const char *vgname, const char *vgid);

-bool lvmcache_scan_mismatch(struct cmd_context *cmd, const char *vgname, const char *vgid);
+void lvmcache_lock_ordering(int enable);

-int lvmcache_vginfo_has_pvid(struct lvmcache_vginfo *vginfo, const char *pvid_arg);
+int lvmcache_dev_is_unchosen_duplicate(struct device *dev);
+
+void lvmcache_remove_unchosen_duplicate(struct device *dev);
+
+int lvmcache_pvid_in_unchosen_duplicates(const char *pvid);
+
+int lvmcache_get_vg_devs(struct cmd_context *cmd,
+			 struct lvmcache_vginfo *vginfo,
+			 struct dm_list *devs);
+void lvmcache_set_independent_location(const char *vgname);
+
+int lvmcache_scan_mismatch(struct cmd_context *cmd, const char *vgname, const char *vgid);
+
+int lvmcache_vginfo_has_pvid(struct lvmcache_vginfo *vginfo, char *pvid);
+
+/*
+ * These are clvmd-specific functions and are not related to lvmcache.
+ * FIXME: rename these with a clvm_ prefix in place of lvmcache_
+ */
+void lvmcache_save_vg(struct volume_group *vg, int precommitted);
+struct volume_group *lvmcache_get_saved_vg(const char *vgid, int precommitted);
+struct volume_group *lvmcache_get_saved_vg_latest(const char *vgid);
+void lvmcache_drop_saved_vgid(const char *vgid);

 uint64_t lvmcache_max_metadata_size(void);
 void lvmcache_save_metadata_size(uint64_t val);

 int dev_in_device_list(struct device *dev, struct dm_list *head);

-bool lvmcache_has_bad_metadata(struct device *dev);
+int lvmcache_has_bad_metadata(struct device *dev);

-bool lvmcache_has_old_metadata(struct cmd_context *cmd, const char *vgname, const char *vgid, struct device *dev);
+int lvmcache_has_old_metadata(struct cmd_context *cmd, const char *vgname, const char *vgid, struct device *dev);

 void lvmcache_get_outdated_devs(struct cmd_context *cmd,
                                const char *vgname, const char *vgid,
@ -201,32 +231,18 @@ void lvmcache_get_outdated_mdas(struct cmd_context *cmd,
                                struct device *dev,
                                struct dm_list **mdas);

-bool lvmcache_is_outdated_dev(struct cmd_context *cmd,
-                              const char *vgname, const char *vgid,
-                              struct device *dev);
+int lvmcache_is_outdated_dev(struct cmd_context *cmd,
+                             const char *vgname, const char *vgid,
+                             struct device *dev);

 void lvmcache_del_outdated_devs(struct cmd_context *cmd,
                                const char *vgname, const char *vgid);

 void lvmcache_save_bad_mda(struct lvmcache_info *info, struct metadata_area *mda);

-void lvmcache_del_save_bad_mda(struct lvmcache_info *info, int mda_num, int bad_mda_flag);
-
 void lvmcache_get_bad_mdas(struct cmd_context *cmd,
-                           const char *vgname, const char *vgid,
-                           struct dm_list *bad_mda_list);
+			   const char *vgname, const char *vgid,
+			   struct dm_list *bad_mdas);

-void lvmcache_get_mdas(struct cmd_context *cmd,
-                       const char *vgname, const char *vgid,
-                       struct dm_list *mda_list);
-
-const char *dev_filtered_reason(struct device *dev);
-const char *devname_error_reason(const char *devname);
-
-struct metadata_area *lvmcache_get_dev_mda(struct device *dev, int mda_num);
-
-void lvmcache_extra_md_component_checks(struct cmd_context *cmd);
-
-unsigned int lvmcache_vg_info_count(void);

 #endif
--- a/lib/cache_segtype/cache.c
+++ b/lib/cache_segtype/cache.c
@ -335,7 +335,7 @@ static int _lookup_kallsyms(const char *symbol)

 static int _target_present(struct cmd_context *cmd,
 			   const struct lv_segment *seg __attribute__((unused)),
-			   unsigned *attributes)
+			   unsigned *attributes __attribute__((unused)))
 {
 	/* List of features with their kernel target version */
 	static const struct feature {
@ -504,6 +504,9 @@ static int _cache_text_import(struct lv_segment *seg,

 	seg->lv->status |= strstr(seg->lv->name, "_corig") ? LV_PENDING_DELETE : 0;

+	if (!attach_pool_lv(seg, pool_lv, NULL, NULL, NULL))
+		return_0;
+
 	if (!_settings_text_import(seg, sn))
 		return_0;

@ -525,26 +528,17 @@ static int _cache_text_import(struct lv_segment *seg,
 		if (!dm_config_get_uint64(sn, "data_len", &seg->data_len))
 			return SEG_LOG_ERROR("Couldn't read data_len in");

-		/* Will use CVOL ID, when metadata_id is not provided */
-		if (dm_config_has_node(sn, "metadata_id")) {
-			if (!(seg->metadata_id = dm_pool_alloc(seg->lv->vg->vgmem, sizeof(*seg->metadata_id))))
-				return SEG_LOG_ERROR("Couldn't allocate metadata_id in");
-			if (!dm_config_get_str(sn, "metadata_id", &uuid))
-				return SEG_LOG_ERROR("Couldn't read metadata_id in");
-			if (!id_read_format(seg->metadata_id, uuid))
-				return SEG_LOG_ERROR("Couldn't format metadata_id in");
-		}
+		if (!dm_config_get_str(sn, "metadata_id", &uuid))
+			return SEG_LOG_ERROR("Couldn't read metadata_id in");

-		/* Will use CVOL ID, when data_id is not provided */
-		if (dm_config_has_node(sn, "data_id")) {
-			if (!(seg->data_id = dm_pool_alloc(seg->lv->vg->vgmem, sizeof(*seg->data_id))))
-				return SEG_LOG_ERROR("Couldn't allocate data_id in");
-			if (!dm_config_get_str(sn, "data_id", &uuid))
-				return SEG_LOG_ERROR("Couldn't read data_id in");
-			if (!id_read_format(seg->data_id, uuid))
-				return SEG_LOG_ERROR("Couldn't format data_id in");
-		}
-		pool_lv->status |= LV_CACHE_VOL; /* Mark as cachevol LV */
+		if (!id_read_format(&seg->metadata_id, uuid))
+			return SEG_LOG_ERROR("Couldn't format metadata_id in");
+
+		if (!dm_config_get_str(sn, "data_id", &uuid))
+			return SEG_LOG_ERROR("Couldn't read data_id in");
+
+		if (!id_read_format(&seg->data_id, uuid))
+			return SEG_LOG_ERROR("Couldn't format data_id in");
 	} else {
 		/* Do not call this when LV is cache_vol. */
 		/* load order is unknown, could be cache origin or pool LV, so check for both */
@ -552,9 +546,6 @@ static int _cache_text_import(struct lv_segment *seg,
 			_fix_missing_defaults(first_seg(pool_lv));
 	}

-	if (!attach_pool_lv(seg, pool_lv, NULL, NULL, NULL))
-		return_0;
-
 	return 1;
 }

@ -590,17 +581,13 @@ static int _cache_text_export(const struct lv_segment *seg, struct formatter *f)
 		outf(f, "data_start = " FMTu64, seg->data_start);
 		outf(f, "data_len = " FMTu64, seg->data_len);

-		if (seg->metadata_id) {
-			if (!id_write_format(seg->metadata_id, buffer, sizeof(buffer)))
-				return_0;
-			outf(f, "metadata_id = \"%s\"", buffer);
-		}
+		if (!id_write_format(&seg->metadata_id, buffer, sizeof(buffer)))
+			return_0;
+		outf(f, "metadata_id = \"%s\"", buffer);

-		if (seg->data_id) {
-			if (!id_write_format(seg->data_id, buffer, sizeof(buffer)))
-				return_0;
-			outf(f, "data_id = \"%s\"", buffer);
-		}
+		if (!id_write_format(&seg->data_id, buffer, sizeof(buffer)))
+			return_0;
+		outf(f, "data_id = \"%s\"", buffer);
 	}

 	return 1;
@ -618,9 +605,6 @@ static int _cache_add_target_line(struct dev_manager *dm,
 {
 	struct lv_segment *cache_pool_seg;
 	struct lv_segment *setting_seg;
-	struct dm_config_node *policy_settings;
-	struct dm_config_node *cn;
-	unsigned  i, j;
 	union lvid metadata_lvid;
 	union lvid data_lvid;
 	char *metadata_uuid, *data_uuid, *origin_uuid;
@ -711,71 +695,16 @@ static int _cache_add_target_line(struct dev_manager *dm,
 		memset(&metadata_lvid, 0, sizeof(metadata_lvid));
 		memset(&data_lvid, 0, sizeof(data_lvid));
 		memcpy(&metadata_lvid.id[0], &seg->lv->vg->id, sizeof(struct id));
-		memcpy(&metadata_lvid.id[1], (seg->metadata_id) ? : &seg->pool_lv->lvid.id[1], sizeof(struct id));
+		memcpy(&metadata_lvid.id[1], &seg->metadata_id, sizeof(struct id));
 		memcpy(&data_lvid.id[0], &seg->lv->vg->id, sizeof(struct id));
-		memcpy(&data_lvid.id[1], (seg->data_id) ? : &seg->pool_lv->lvid.id[1], sizeof(struct id));
+		memcpy(&data_lvid.id[1], &seg->data_id, sizeof(struct id));

-		if (!(metadata_uuid = dm_build_dm_uuid(mem, UUID_PREFIX, (const char *)&metadata_lvid.s, "cmeta")))
+		if (!(metadata_uuid = dm_build_dm_uuid(mem, UUID_PREFIX, (const char *)&metadata_lvid.s, NULL)))
 			return_0;
-		if (!(data_uuid = dm_build_dm_uuid(mem, UUID_PREFIX, (const char *)&data_lvid.s, "cdata")))
+		if (!(data_uuid = dm_build_dm_uuid(mem, UUID_PREFIX, (const char *)&data_lvid.s, NULL)))
 			return_0;
 	}

-	policy_settings = seg->cleaner_policy ? NULL : setting_seg->policy_settings;
-	if (policy_settings && cache_pool_seg->policy_name) {
-		static const struct act {
-			const char *name;
-			const char *settings[20];
-		} _accepted[] = {
-			{
-				"MQ", {
-					"migration_threshold", "sequential_threshold", "random_threshold",
-					"read_promote_adjustment", "write_promote_adjustment",
-					"discard_promote_adjustment", NULL
-				},
-			}, {
-				"SMQ", {
-					"migration_threshold", NULL
-				}
-			}
-		};
-
-                /* Check if cache settings are acceptable to knownm policies */
-		for (i = 0; i < DM_ARRAY_SIZE(_accepted); i++) {
-			if (strcasecmp(cache_pool_seg->policy_name, _accepted[i].name))
-				continue;
-
-			for (cn = policy_settings->child; cn; cn = cn->sib) {
-				for (j = 0; _accepted[i].settings[j]; j++)
-					if (strcmp(cn->key, _accepted[i].settings[j]) == 0)
-						break; /* -> Valid setting */
-
-				/* Have we found 'unsupported' cache setting? */
-				if (!_accepted[i].settings[j]) {
-					/* Make a copy of policy settings a remove unsupported settings and Warn */
-					if (!(policy_settings = dm_config_clone_node_with_mem(mem, policy_settings, 0)))
-						return_0;
-				restart:
-					for (cn = policy_settings->child; cn; cn = cn->sib) {
-						for (j = 0; _accepted[i].settings[j]; j++) {
-							if (strcmp(cn->key, _accepted[i].settings[j]) == 0)
-								break; /* need to be dropped */
-						}
-						if (!_accepted[i].settings[j]) {
-							log_warn("WARNING: %s cache policy does not support \"%s=" FMTu64 "\" setting, "
-								 "remove with 'lvchange --cachesettings \"%s=default\" ...'.",
-								 _accepted[i].name, cn->key, cn->v->v.i, cn->key);
-							dm_config_remove_node(policy_settings, cn);
-							goto restart;
-						}
-					}
-					break;
-				}
-			}
-			break;
-		}
-	}
-
 	if (!dm_tree_node_add_cache_target(node, len,
 					   feature_flags,
 					   metadata_uuid,
@ -784,7 +713,7 @@ static int _cache_add_target_line(struct dev_manager *dm,
 					   seg->cleaner_policy ? "cleaner" :
 						   /* undefined policy name -> likely an old "mq" */
 						   cache_pool_seg->policy_name ? : "mq",
-					   policy_settings,
+					   seg->cleaner_policy ? NULL : setting_seg->policy_settings,
 					   seg->metadata_start,
 					   seg->metadata_len,
 					   seg->data_start,
--- a/lib/commands/toolcontext.c
+++ b/lib/commands/toolcontext.c
@ -32,7 +32,6 @@
 #include "lib/cache/lvmcache.h"
 #include "lib/format_text/archiver.h"
 #include "lib/lvmpolld/lvmpolld-client.h"
-#include "lib/device/device_id.h"

 #include <locale.h>
 #include <sys/stat.h>
@ -41,10 +40,6 @@
 #include <syslog.h>
 #include <time.h>

-#ifdef APP_MACHINEID_SUPPORT
-#include <systemd/sd-id128.h>
-#endif
-
 #ifdef __linux__
 #  include <malloc.h>
 #endif
@ -133,12 +128,9 @@ static const char *_read_system_id_from_file(struct cmd_context *cmd, const char
 	return system_id;
 }

-/* systemd-id128 new produced: f64406832c2140e8ac5422d1089aae03 */
-#define LVM_APPLICATION_ID SD_ID128_MAKE(f6,44,06,83,2c,21,40,e8,ac,54,22,d1,08,9a,ae,03)
-
 static const char *_system_id_from_source(struct cmd_context *cmd, const char *source)
 {
-	char buf[PATH_MAX];
+	char filebuf[PATH_MAX];
 	const char *file;
 	const char *etc_str;
 	const char *str;
@ -157,23 +149,10 @@ static const char *_system_id_from_source(struct cmd_context *cmd, const char *s
 		goto out;
 	}

-#ifdef APP_MACHINEID_SUPPORT
-	if (!strcasecmp(source, "appmachineid")) {
-		sd_id128_t id;
-
-		sd_id128_get_machine_app_specific(LVM_APPLICATION_ID, &id);
-
-		if (dm_snprintf(buf, PATH_MAX, SD_ID128_FORMAT_STR, SD_ID128_FORMAT_VAL(id)) < 0)
-			stack;
-		system_id = system_id_from_string(cmd, buf);
-		goto out;
-	}
-#endif
-
 	if (!strcasecmp(source, "machineid") || !strcasecmp(source, "machine-id")) {
 		etc_str = find_config_tree_str(cmd, global_etc_CFG, NULL);
-		if (dm_snprintf(buf, sizeof(buf), "%s/machine-id", etc_str) != -1)
-			system_id = _read_system_id_from_file(cmd, buf);
+		if (dm_snprintf(filebuf, sizeof(filebuf), "%s/machine-id", etc_str) != -1)
+			system_id = _read_system_id_from_file(cmd, filebuf);
 		goto out;
 	}

@ -250,7 +229,7 @@ static void _get_sysfs_dir(struct cmd_context *cmd, char *buf, size_t buf_size)
 		return;
 	}

-	(void) dm_strncpy(buf, sys_mnt, buf_size);
+	strncpy(buf, sys_mnt, buf_size);
 }

 static uint32_t _parse_debug_fields(struct cmd_context *cmd, int cfg, const char *cfgname)
@ -340,33 +319,6 @@ static int _parse_debug_classes(struct cmd_context *cmd)
 	return debug_classes;
 }

-static uint32_t _parse_log_journal(struct cmd_context *cmd, int cfg, const char *cfgname)
-{
-	const struct dm_config_node *cn;
-	const struct dm_config_value *cv;
-	uint32_t fields = 0;
-	uint32_t val;
-
-	if (!(cn = find_config_tree_array(cmd, cfg, NULL))) {
-		log_debug("Unable to find configuration for log/%s.", cfgname);
-		return 0;
-	}
-
-	for (cv = cn->v; cv; cv = cv->next) {
-		if (cv->type != DM_CFG_STRING) {
-			log_verbose("log/%s contains a value which is not a string.  Ignoring.", cfgname);
-			continue;
-		}
-
-		if ((val = log_journal_str_to_val(cv->v.str)))
-			fields |= val;
-		else
-			log_verbose("Unrecognised value for log/%s: %s", cfgname, cv->v.str);
-	}
-
-	return fields;
-}
-
 static void _init_logging(struct cmd_context *cmd)
 {
 	int append = 1;
@ -377,11 +329,12 @@ static void _init_logging(struct cmd_context *cmd)

 	/* Syslog */
 	cmd->default_settings.syslog = find_config_tree_bool(cmd, log_syslog_CFG, NULL);
-	if (cmd->default_settings.syslog)
-		init_syslog(1, DEFAULT_LOG_FACILITY);
-	else
+	if (cmd->default_settings.syslog != 1)
 		fin_syslog();

+	if (cmd->default_settings.syslog > 1)
+		init_syslog(cmd->default_settings.syslog);
+
 	/* Debug level for log file output */
 	cmd->default_settings.debug = find_config_tree_int(cmd, log_level_CFG, NULL);
 	init_debug(cmd->default_settings.debug);
@ -434,9 +387,6 @@ static void _init_logging(struct cmd_context *cmd)
 	init_debug_file_fields(_parse_debug_fields(cmd, log_debug_file_fields_CFG, "debug_file_fields"));
 	init_debug_output_fields(_parse_debug_fields(cmd, log_debug_output_fields_CFG, "debug_output_fields"));

-	cmd->default_settings.journal = _parse_log_journal(cmd, log_journal_CFG, "journal");
-	init_log_journal(cmd->default_settings.journal);
-
 	t = time(NULL);
 	ctime_r(&t, &timebuf[0]);
 	timebuf[24] = '\0';
@ -451,12 +401,15 @@ static void _init_logging(struct cmd_context *cmd)
 	reset_lvm_errno(1);
 }

-static int _check_disable_udev(const char *msg)
-{
+static int _check_disable_udev(const char *msg) {
 	if (getenv("DM_DISABLE_UDEV")) {
-		log_very_verbose("DM_DISABLE_UDEV environment variable set.");
-		log_very_verbose("Overriding configuration to use udev_rules=0, udev_sync=0, verify_udev_operations=1.");
-		log_very_verbose("LVM will %s.", msg);
+		log_very_verbose("DM_DISABLE_UDEV environment variable set. "
+				 "Overriding configuration to use "
+				 "udev_rules=0, udev_sync=0, verify_udev_operations=1.");
+		if (udev_is_running())
+			log_warn("Udev is running and DM_DISABLE_UDEV environment variable is set. "
+				 "Bypassing udev, LVM will %s.", msg);
+
 		return 1;
 	}

@ -609,7 +562,7 @@ static int _init_system_id(struct cmd_context *cmd)
 static int _process_config(struct cmd_context *cmd)
 {
 	mode_t old_umask;
-	const char *dev_ext_info_src = NULL;
+	const char *dev_ext_info_src;
 	const char *read_ahead;
 	struct stat st;
 	const struct dm_config_node *cn;
@ -643,25 +596,14 @@ static int _process_config(struct cmd_context *cmd)
 #endif

 	dev_ext_info_src = find_config_tree_str(cmd, devices_external_device_info_source_CFG, NULL);
-
-	if (dev_ext_info_src &&
-	    strcmp(dev_ext_info_src, "none") &&
-	    strcmp(dev_ext_info_src, "udev")) {
-		log_warn("WARNING: unknown external device info source, using none.");
-		dev_ext_info_src = NULL;
-	}
-
-	if (dev_ext_info_src && !strcmp(dev_ext_info_src, "udev")) {
-		if (udev_init_library_context()) {
-			init_external_device_info_source(DEV_EXT_UDEV);
-		} else {
-			log_warn("WARNING: failed to init udev for external device info, using none.");
-			dev_ext_info_src = NULL;
-		}
-	}
-
-	if (!dev_ext_info_src || !strcmp(dev_ext_info_src, "none"))
+	if (dev_ext_info_src && !strcmp(dev_ext_info_src, "none"))
 		init_external_device_info_source(DEV_EXT_NONE);
+	else if (dev_ext_info_src && !strcmp(dev_ext_info_src, "udev"))
+		init_external_device_info_source(DEV_EXT_UDEV);
+	else {
+		log_error("Invalid external device info source specification.");
+		return 0;
+	}

 	/* proc dir */
 	if (dm_snprintf(cmd->proc_dir, sizeof(cmd->proc_dir), "%s",
@ -718,8 +660,6 @@ static int _process_config(struct cmd_context *cmd)
 	 */
 	cmd->default_settings.udev_fallback = udev_disabled ? 1 : -1;

-	cmd->default_settings.issue_discards = find_config_tree_bool(cmd, devices_issue_discards_CFG, NULL);
-
 	init_retry_deactivation(find_config_tree_bool(cmd, activation_retry_deactivation_CFG, NULL));

 	init_activation_checks(find_config_tree_bool(cmd, activation_checks_CFG, NULL));
@ -765,7 +705,6 @@ static int _process_config(struct cmd_context *cmd)
 	init_pv_min_size((uint64_t)pv_min_kb * (1024 >> SECTOR_SHIFT));

 	cmd->check_pv_dev_sizes = find_config_tree_bool(cmd, metadata_check_pv_device_sizes_CFG, NULL);
-	cmd->event_activation = find_config_tree_bool(cmd, global_event_activation_CFG, NULL);

 	if (!process_profilable_config(cmd))
 		return_0;
@ -1024,13 +963,8 @@ static void _destroy_config(struct cmd_context *cmd)
 	/* CONFIG_FILE/CONFIG_MERGED_FILES */
 	if ((cft = remove_config_tree_by_source(cmd, CONFIG_MERGED_FILES)))
 		config_destroy(cft);
-	else if ((cft = remove_config_tree_by_source(cmd, CONFIG_FILE))) {
-		dm_list_iterate_items(cfl, &cmd->config_files) {
-			if (cfl->cft == cft)
-				dm_list_del(&cfl->list);
-		}
-		config_destroy(cft);
-	}
+	else
+		remove_config_tree_by_source(cmd, CONFIG_FILE);

 	dm_list_iterate_items(cfl, &cmd->config_files)
 		config_destroy(cfl->cft);
@ -1076,10 +1010,16 @@ static int _init_dev_cache(struct cmd_context *cmd)
 	if (!dev_cache_init(cmd))
 		return_0;

-	if ((device_list_from_udev = find_config_tree_bool(cmd, devices_obtain_device_list_from_udev_CFG, NULL))) {
-		if (!udev_init_library_context())
-			device_list_from_udev = 0;
-	}
+	/*
+	 * Override existing config and hardcode device_list_from_udev = 0 if:
+	 *   - udev is not running
+	 *   - udev is disabled using DM_DISABLE_UDEV environment variable
+	 */
+	if (_check_disable_udev("obtain device list by scanning device directory"))
+		device_list_from_udev = 0;
+	else
+		device_list_from_udev = udev_is_running() ?
+			find_config_tree_bool(cmd, devices_obtain_device_list_from_udev_CFG, NULL) : 0;

 	init_obtain_device_list_from_udev(device_list_from_udev);

@ -1126,7 +1066,7 @@ static int _init_dev_cache(struct cmd_context *cmd)
 	return 1;
 }

-#define MAX_FILTERS 11
+#define MAX_FILTERS 10

 static struct dev_filter *_init_filter_chain(struct cmd_context *cmd)
 {
@ -1145,9 +1085,6 @@ static struct dev_filter *_init_filter_chain(struct cmd_context *cmd)
 	 * sysfs filter. Only available on 2.6 kernels.  Non-critical.
 	 * Listed first because it's very efficient at eliminating
 	 * unavailable devices.
-	 *
-	 * TODO: I suspect that using the lvm_type and device_id
-	 * filters before this one may be more efficient.
 	 */
 	if (find_config_tree_bool(cmd, devices_sysfs_scan_CFG, NULL)) {
 		if ((filters[nr_filt] = sysfs_filter_create()))
@ -1163,7 +1100,7 @@ static struct dev_filter *_init_filter_chain(struct cmd_context *cmd)

 	/* global regex filter. Optional. */
 	if ((cn = find_config_tree_node(cmd, devices_global_filter_CFG, NULL))) {
-		if (!(filters[nr_filt] = regex_filter_create(cn->v, 0, 1))) {
+		if (!(filters[nr_filt] = regex_filter_create(cn->v))) {
 			log_error("Failed to create global regex device filter");
 			goto bad;
 		}
@ -1172,7 +1109,7 @@ static struct dev_filter *_init_filter_chain(struct cmd_context *cmd)

 	/* regex filter. Optional. */
 	if ((cn = find_config_tree_node(cmd, devices_filter_CFG, NULL))) {
-		if (!(filters[nr_filt] = regex_filter_create(cn->v, 1, 0))) {
+		if (!(filters[nr_filt] = regex_filter_create(cn->v))) {
 			log_error("Failed to create regex device filter");
 			goto bad;
 		}
@ -1186,13 +1123,6 @@ static struct dev_filter *_init_filter_chain(struct cmd_context *cmd)
 	}
 	nr_filt++;

-	/* filter based on the device_ids saved in the devices file */
-	if (!(filters[nr_filt] = deviceid_filter_create(cmd))) {
-		log_error("Failed to create deviceid device filter");
-		goto bad;
-	}
-	nr_filt++;
-
 	/* usable device filter. Required. */
 	if (!(filters[nr_filt] = usable_filter_create(cmd, cmd->dev_types, FILTER_MODE_NO_LVMETAD))) {
 		log_error("Failed to create usabled device filter");
@ -1234,7 +1164,7 @@ static struct dev_filter *_init_filter_chain(struct cmd_context *cmd)
 			nr_filt++;
 	}

-	if (!(composite = composite_filter_create(nr_filt, filters)))
+	if (!(composite = composite_filter_create(nr_filt, 1, filters)))
 		goto_bad;

 	return composite;
@ -1346,7 +1276,7 @@ int init_lvmcache_orphans(struct cmd_context *cmd)
 	struct format_type *fmt;

 	dm_list_iterate_items(fmt, &cmd->formats)
-		if (!lvmcache_add_orphan_vginfo(cmd, fmt->orphan_vg_name, fmt))
+		if (!lvmcache_add_orphan_vginfo(fmt->orphan_vg_name, fmt))
 			return_0;

 	return 1;
@ -1432,11 +1362,6 @@ static int _init_segtypes(struct cmd_context *cmd)
 		return 0;
 #endif

-#ifdef INTEGRITY_INTERNAL
-	if (!init_integrity_segtypes(cmd, &seglib))
-		return 0;
-#endif
-
 	return 1;
 }

@ -1555,7 +1480,6 @@ int init_run_by_dmeventd(struct cmd_context *cmd)
 	init_dmeventd_monitor(DMEVENTD_MONITOR_IGNORE);
 	init_ignore_suspended_devices(1);
 	init_disable_dmeventd_monitoring(1); /* Lock settings */
-	cmd->run_by_dmeventd = 1;

 	return 0;
 }
@ -1568,8 +1492,6 @@ void destroy_config_context(struct cmd_context *cmd)
 		dm_pool_destroy(cmd->mem);
 	if (cmd->libmem)
 		dm_pool_destroy(cmd->libmem);
-	if (cmd->pending_delete_mem)
-		dm_pool_destroy(cmd->pending_delete_mem);

 	free(cmd);
 }
@ -1598,9 +1520,6 @@ struct cmd_context *create_config_context(void)
 	if (!(cmd->mem = dm_pool_create("command", 4 * 1024)))
 		goto out;

-	if (!(cmd->pending_delete_mem = dm_pool_create("pending_delete", 1024)))
-		goto_out;
-
 	dm_list_init(&cmd->config_files);
 	dm_list_init(&cmd->tags);
 	dm_list_init(&cmd->hints);
@ -1653,6 +1572,8 @@ struct cmd_context *create_toolcontext(unsigned is_clvmd,
 	bindtextdomain(INTL_PACKAGE, LOCALEDIR);
 #endif

+	init_syslog(DEFAULT_LOG_FACILITY);
+
 	if (!(cmd = zalloc(sizeof(*cmd)))) {
 		log_error("Failed to allocate command context");
 		return NULL;
@ -1663,12 +1584,10 @@ struct cmd_context *create_toolcontext(unsigned is_clvmd,
 	cmd->handles_missing_pvs = 0;
 	cmd->handles_unknown_segments = 0;
 	cmd->hosttags = 0;
-	cmd->check_devs_used = 1;
 	dm_list_init(&cmd->arg_value_groups);
 	dm_list_init(&cmd->formats);
 	dm_list_init(&cmd->segtypes);
 	dm_list_init(&cmd->tags);
-	dm_list_init(&cmd->hints);
 	dm_list_init(&cmd->config_files);
 	label_init();

@ -1748,9 +1667,6 @@ struct cmd_context *create_toolcontext(unsigned is_clvmd,
 		goto out;
 	}

-	if (!(cmd->pending_delete_mem = dm_pool_create("pending_delete", 1024)))
-		goto_out;
-
 	if (!_init_lvm_conf(cmd))
 		goto_out;

@ -1787,8 +1703,6 @@ struct cmd_context *create_toolcontext(unsigned is_clvmd,
 	if (!_init_dev_cache(cmd))
 		goto_out;

-	devices_file_init(cmd);
-
 	memlock_init(cmd);

 	if (!_init_formats(cmd))
@ -1801,6 +1715,8 @@ struct cmd_context *create_toolcontext(unsigned is_clvmd,
 	if (!init_lvmcache_orphans(cmd))
 		goto_out;

+	dm_list_init(&cmd->unused_duplicate_devs);
+
 	if (!_init_segtypes(cmd))
 		goto_out;

@ -1820,8 +1736,6 @@ struct cmd_context *create_toolcontext(unsigned is_clvmd,
 	cmd->current_settings = cmd->default_settings;

 	cmd->initialized.config = 1;
-
-	dm_list_init(&cmd->pending_delete);
 out:
 	if (!cmd->initialized.config) {
 		destroy_toolcontext(cmd);
@ -1907,14 +1821,13 @@ int refresh_toolcontext(struct cmd_context *cmd)
 	 */

 	activation_release();
-	hints_exit(cmd);
+	hints_exit();
 	lvmcache_destroy(cmd, 0, 0);
 	label_scan_destroy(cmd);
 	label_exit();
 	_destroy_segtypes(&cmd->segtypes);
 	_destroy_formats(cmd, &cmd->formats);

-	devices_file_exit(cmd);
 	if (!dev_cache_exit())
 		stack;
 	_destroy_dev_types(cmd);
@ -1994,8 +1907,6 @@ int refresh_toolcontext(struct cmd_context *cmd)
 	if (!_init_dev_cache(cmd))
 		return_0;

-	devices_file_init(cmd);
-
 	if (!_init_formats(cmd))
 		return_0;

@ -2013,12 +1924,6 @@ int refresh_toolcontext(struct cmd_context *cmd)

 	cmd->initialized.config = 1;

-	if (!dm_list_empty(&cmd->pending_delete)) {
-		log_debug(INTERNAL_ERROR "Unprocessed pending delete for %d devices.",
-			  dm_list_size(&cmd->pending_delete));
-		dm_list_init(&cmd->pending_delete);
-	}
-
 	if (cmd->initialized.connections && !init_connections(cmd))
 		return_0;

@ -2036,7 +1941,7 @@ void destroy_toolcontext(struct cmd_context *cmd)

 	archive_exit(cmd);
 	backup_exit(cmd);
-	hints_exit(cmd);
+	hints_exit();
 	lvmcache_destroy(cmd, 0, 0);
 	label_scan_destroy(cmd);
 	label_exit();
@ -2045,7 +1950,6 @@ void destroy_toolcontext(struct cmd_context *cmd)
 	_destroy_filters(cmd);
 	if (cmd->mem)
 		dm_pool_destroy(cmd->mem);
-	devices_file_exit(cmd);
 	dev_cache_exit();
 	_destroy_dev_types(cmd);
 	_destroy_tags(cmd);
@ -2060,8 +1964,6 @@ void destroy_toolcontext(struct cmd_context *cmd)
 	if (cmd->libmem)
 		dm_pool_destroy(cmd->libmem);

-	if (cmd->pending_delete_mem)
-		dm_pool_destroy(cmd->pending_delete_mem);
 #ifndef VALGRIND_POOL
 	if (cmd->linebuffer) {
 		/* Reset stream buffering to defaults */
--- a/lib/commands/toolcontext.h
+++ b/lib/commands/toolcontext.h
@ -29,9 +29,7 @@ struct config_info {
 	int debug_classes;
 	int verbose;
 	int silent;
-	int suppress;
 	int test;
-	int yes;
 	int syslog;
 	int activation;
 	int suffix;
@ -41,8 +39,7 @@ struct config_info {
 	int udev_rules;
 	int udev_sync;
 	int udev_fallback;
-	int issue_discards;
-	uint32_t journal;
+	int cache_vgmetadata;
 	const char *msg_prefix;
 	const char *fmt_name;
 	const char *dmeventd_executable;
@ -151,12 +148,10 @@ struct cmd_context {
 	unsigned unknown_system_id:1;
 	unsigned include_historical_lvs:1;	/* also process/report/display historical LVs */
 	unsigned record_historical_lvs:1;	/* record historical LVs */
-	unsigned include_exported_vgs:1;
 	unsigned include_foreign_vgs:1;		/* report/display cmds can reveal foreign VGs */
 	unsigned include_shared_vgs:1;		/* report/display cmds can reveal lockd VGs */
 	unsigned include_active_foreign_vgs:1;	/* cmd should process foreign VGs with active LVs */
 	unsigned vg_read_print_access_error:1;	/* print access errors from vg_read */
-	unsigned allow_mixed_block_sizes:1;
 	unsigned force_access_clustered:1;
 	unsigned lockd_gl_disable:1;
 	unsigned lockd_vg_disable:1;
@ -165,9 +160,6 @@ struct cmd_context {
 	unsigned lockd_vg_default_sh:1;
 	unsigned lockd_vg_enforce_sh:1;
 	unsigned lockd_lv_sh_for_ex:1;
-	unsigned lockd_global_ex:1;		/* set while global lock held ex (lockd) */
-	unsigned lockf_global_ex:1;		/* set while global lock held ex (flock) */
-	unsigned nolocking:1;
 	unsigned vg_notify:1;
 	unsigned lv_notify:1;
 	unsigned pv_notify:1;
@ -177,42 +169,19 @@ struct cmd_context {
 	unsigned pvscan_cache_single:1;
 	unsigned can_use_one_scan:1;
 	unsigned is_clvmd:1;
-	unsigned md_component_detection:1;
 	unsigned use_full_md_check:1;
 	unsigned is_activating:1;
 	unsigned enable_hints:1;		/* hints are enabled for cmds in general */
 	unsigned use_hints:1;			/* if hints are enabled this cmd can use them */
 	unsigned pvscan_recreate_hints:1;	/* enable special case hint handling for pvscan --cache */
-	unsigned hints_pvs_online:1;		/* hints="pvs_online" */
 	unsigned scan_lvs:1;
 	unsigned wipe_outdated_pvs:1;
-	unsigned enable_devices_list:1;		/* command is using --devices option */
-	unsigned enable_devices_file:1;		/* command is using devices file */
-	unsigned pending_devices_file:1;	/* command may create and enable devices file */
-	unsigned create_edit_devices_file:1;	/* command expects to create and/or edit devices file */
-	unsigned edit_devices_file:1;		/* command expects to edit devices file */
-	unsigned filter_deviceid_skip:1;	/* don't use filter-deviceid */
-	unsigned filter_regex_with_devices_file:1; /* use filter-regex even when devices file is enabled */
-	unsigned filter_nodata_only:1;          /* only use filters that do not require data from the dev */
-	unsigned run_by_dmeventd:1;		/* command is being run by dmeventd */
-	unsigned sysinit:1;			/* --sysinit is used */
-	unsigned ignorelockingfailure:1;	/* --ignorelockingfailure is used */
-	unsigned check_devs_used:1;		/* check devs used by LVs */
-	unsigned print_device_id_not_found:1;	/* print devices file entries not found */
-	unsigned ignore_device_name_mismatch:1; /* skip updating devices file names */
-	unsigned backup_disabled:1;		/* skip repeated debug message */
-	unsigned event_activation:1;		/* whether event_activation is set */

 	/*
 	 * Devices and filtering.
 	 */
 	struct dev_filter *filter;
 	struct dm_list hints;
-	struct dm_list use_devices;		/* struct dev_use for each entry in devices file */
-	const char *md_component_checks;
-	const char *search_for_devnames;	/* config file setting */
-	const char *devicesfile;                /* from --devicesfile option */
-	struct dm_list deviceslist;             /* from --devices option, struct dm_str_list */

 	/*
 	 * Configuration.
@ -244,7 +213,6 @@ struct cmd_context {
 	char system_dir[PATH_MAX];
 	char dev_dir[PATH_MAX];
 	char proc_dir[PATH_MAX];
-	char devices_file_path[PATH_MAX];

 	/*
 	 * Reporting.
@ -264,8 +232,7 @@ struct cmd_context {
 	const char *report_list_item_separator;
 	const char *time_format;
 	unsigned rand_seed;
-	struct dm_list pending_delete;		/* list of LVs for removal */
-	struct dm_pool *pending_delete_mem;	/* memory pool for pending deletes */
+	struct dm_list unused_duplicate_devs; /* save preferences between lvmcache instances */
 };

 /*
--- a/lib/config/config.c
+++ b/lib/config/config.c
@ -501,15 +501,12 @@ int config_file_read_fd(struct dm_config_tree *cft, struct device *dev, dev_io_r
 			checksum_fn_t checksum_fn, uint32_t checksum,
 			int checksum_only, int no_dup_node_check)
 {
-	char namebuf[NAME_LEN + 1] __attribute__((aligned(8)));
-	int namelen = 0;
-	int bad_name = 0;
 	char *fb, *fe;
 	int r = 0;
-	int sz, use_plain_read = 1;
+	int use_mmap = 1;
+	off_t mmap_offset = 0;
 	char *buf = NULL;
 	struct config_source *cs = dm_config_get_custom(cft);
-	size_t rsize;

 	if (!_is_file_based_config_source(cs->type)) {
 		log_error(INTERNAL_ERROR "config_file_read_fd: expected file, special file "
@ -518,28 +515,26 @@ int config_file_read_fd(struct dm_config_tree *cft, struct device *dev, dev_io_r
 		return 0;
 	}

-	/* Only use plain read with regular files */
+	/* Only use mmap with regular files */
 	if (!(dev->flags & DEV_REGULAR) || size2)
-		use_plain_read = 0;
+		use_mmap = 0;

-	if (!(buf = zalloc(size + size2))) {
-		log_error("Failed to allocate circular buffer.");
-		return 0;
-	}
-
-	if (use_plain_read) {
-		/* Note: also used for lvm.conf to read all settings */
-		for (rsize = 0; rsize < size; rsize += sz) {
-			do {
-				sz = read(dev_fd(dev), buf + rsize, size - rsize);
-			} while ((sz < 0) && ((errno == EINTR) || (errno == EAGAIN)));
-
-			if (sz < 0) {
-				log_sys_error("read", dev_name(dev));
-				goto out;
-			}
+	if (use_mmap) {
+		mmap_offset = offset % lvm_getpagesize();
+		/* memory map the file */
+		fb = mmap((caddr_t) 0, size + mmap_offset, PROT_READ,
+			  MAP_PRIVATE, dev_fd(dev), offset - mmap_offset);
+		if (fb == (caddr_t) (-1)) {
+			log_sys_error("mmap", dev_name(dev));
+			goto out;
 		}
+		fb = fb + mmap_offset;
 	} else {
+		if (!(buf = malloc(size + size2))) {
+			log_error("Failed to allocate circular buffer.");
+			return 0;
+		}
+
 		if (!dev_read_bytes(dev, offset, size, buf))
 			goto out;

@ -547,25 +542,8 @@ int config_file_read_fd(struct dm_config_tree *cft, struct device *dev, dev_io_r
 			if (!dev_read_bytes(dev, offset2, size2, buf + size))
 				goto out;
 		}
-	}

-	fb = buf;
-
-	if (!(dev->flags & DEV_REGULAR)) {
-		memcpy(namebuf, buf, NAME_LEN);
-
-		while (namebuf[namelen] && !isspace(namebuf[namelen]) && namebuf[namelen] != '{' && namelen < (NAME_LEN - 1))
-			namelen++;
-		namebuf[namelen] = '\0';
-
-		/*
-		 * Check that the text metadata begins with a valid name.
-		 */
-		if (!validate_name(namebuf)) {
-			log_warn("WARNING: Metadata location on %s at offset %llu begins with invalid name.",
-				 dev_name(dev), (unsigned long long)offset);
-			bad_name = 1;
-		}
+		fb = buf;
 	}

 	/*
@ -577,13 +555,10 @@ int config_file_read_fd(struct dm_config_tree *cft, struct device *dev, dev_io_r
 	if (checksum_fn && checksum !=
 	    (checksum_fn(checksum_fn(INITIAL_CRC, (const uint8_t *)fb, size),
 			 (const uint8_t *)(fb + size), size2))) {
-		log_warn("WARNING: Checksum error on %s at offset %llu.", dev_name(dev), (unsigned long long)offset);
+		log_error("%s: Checksum error at offset %" PRIu64, dev_name(dev), (uint64_t) offset);
 		goto out;
 	}

-	if (bad_name)
-		goto out;
-
 	if (!checksum_only) {
 		fe = fb + size + size2;
 		if (no_dup_node_check) {
@ -598,7 +573,15 @@ int config_file_read_fd(struct dm_config_tree *cft, struct device *dev, dev_io_r
 	r = 1;

      out:
-	free(buf);
+	if (!use_mmap)
+		free(buf);
+	else {
+		/* unmap the file */
+		if (munmap(fb - mmap_offset, size + mmap_offset)) {
+			log_sys_error("munmap", dev_name(dev));
+			r = 0;
+		}
+	}

 	return r;
 }
@ -733,7 +716,7 @@ static struct dm_config_value *_get_def_array_values(struct cmd_context *cmd,
 		return array;
 	}

-	if (!(token = enc_value = strdup(def_enc_value))) {
+	if (!(p = token = enc_value = strdup(def_enc_value))) {
 		log_error("_get_def_array_values: strdup failed");
 		return NULL;
 	}
@ -932,7 +915,7 @@ static int _check_value_differs_from_default(struct cft_check_handle *handle,
 				} else {
 					str = v_def ? v_def->v.str
 						    : cfg_def_get_default_value(handle->cmd, def, CFG_TYPE_STRING, NULL);
-					diff = str ? strcmp(str, v->v.str) : 0;
+					diff = strcmp(str, v->v.str);
 				}
 				break;
 			case DM_CFG_EMPTY_ARRAY:
@ -1164,10 +1147,8 @@ int config_def_check(struct cft_check_handle *handle)
 	 * sections and settings with full path as a key.
 	 * If section name is variable, use '#' as a substitute.
 	 */
-	*vp = 0;
-	*rp = 0;
 	if (!handle->cmd->cft_def_hash) {
-		if (!(handle->cmd->cft_def_hash = dm_hash_create(60))) {
+		if (!(handle->cmd->cft_def_hash = dm_hash_create(64))) {
 			log_error("Failed to create configuration definition hash.");
 			r = 0; goto out;
 		}
@ -1733,7 +1714,6 @@ static int _out_prefix_fn(const struct dm_config_node *cn, const char *line, voi
 	const char *node_type_name = cn->v ? "option" : "section";
 	char path[CFG_PATH_MAX_LEN];
 	char commentline[MAX_COMMENT_LINE+1];
-	int is_deprecated = 0;

 	if (cn->id <= 0)
 		return 1;
@ -1747,14 +1727,13 @@ static int _out_prefix_fn(const struct dm_config_node *cn, const char *line, voi

 	cfg_def = cfg_def_get_item_p(cn->id);

-	is_deprecated = _def_node_is_deprecated(cfg_def, out->tree_spec);
-
 	if (out->tree_spec->withsummary || out->tree_spec->withcomments) {
 		_cfg_def_make_path(path, sizeof(path), cfg_def->id, cfg_def, 1);
 		fprintf(out->fp, "\n");
 		fprintf(out->fp, "%s# Configuration %s %s.\n", line, node_type_name, path);

-		if (out->tree_spec->withcomments && is_deprecated && cfg_def->deprecation_comment)
+		if (out->tree_spec->withcomments &&
+		    _def_node_is_deprecated(cfg_def, out->tree_spec))
 			fprintf(out->fp, "%s# %s", line, cfg_def->deprecation_comment);

 		if (cfg_def->comment) {
@ -1765,14 +1744,14 @@ static int _out_prefix_fn(const struct dm_config_node *cn, const char *line, voi
 						continue;
 					commentline[0] = '\0';
 				}
-				fprintf(out->fp, "%s#%s%s\n", line, commentline[0] ? " " : "", commentline);
+				fprintf(out->fp, "%s# %s\n", line, commentline);
 				/* withsummary prints only the first comment line. */
 				if (!out->tree_spec->withcomments)
 					break;
 			}
 		}

-		if (is_deprecated)
+		if (_def_node_is_deprecated(cfg_def, out->tree_spec))
 			fprintf(out->fp, "%s# This configuration %s is deprecated.\n", line, node_type_name);

 		if (cfg_def->flags & CFG_ADVANCED)
@ -1800,7 +1779,7 @@ static int _out_prefix_fn(const struct dm_config_node *cn, const char *line, voi
 			return_0;
 		fprintf(out->fp, "%s# Available since version %s.\n", line, version);

-		if (is_deprecated) {
+		if (_def_node_is_deprecated(cfg_def, out->tree_spec)) {
 			if (!_get_config_node_version(cfg_def->deprecated_since_version, version))
 				return_0;
 			fprintf(out->fp, "%s# Deprecated since version %s.\n", line, version);
--- a/lib/config/config_settings.h
+++ b/lib/config/config_settings.h
--- a/lib/config/defaults.h
+++ b/lib/config/defaults.h
@ -42,7 +42,7 @@
 #define DEFAULT_DEV_DIR "/dev"
 #define DEFAULT_PROC_DIR "/proc"
 #define DEFAULT_SYSTEM_ID_SOURCE "none"
-#define DEFAULT_OBTAIN_DEVICE_LIST_FROM_UDEV 0
+#define DEFAULT_OBTAIN_DEVICE_LIST_FROM_UDEV 1
 #define DEFAULT_EXTERNAL_DEVICE_INFO_SOURCE "none"
 #define DEFAULT_SYSFS_SCAN 1
 #define DEFAULT_MD_COMPONENT_DETECTION 1
@ -118,8 +118,6 @@
 #define DEFAULT_THIN_REPAIR_OPTION1 ""
 #define DEFAULT_THIN_REPAIR_OPTIONS_CONFIG "#S" DEFAULT_THIN_REPAIR_OPTION1
 #define DEFAULT_THIN_POOL_METADATA_REQUIRE_SEPARATE_PVS 0
-#define DEFAULT_THIN_POOL_CROP_METADATA 0
-#define DEFAULT_THIN_POOL_MAX_METADATA_SIZE_V1_KB (UINT64_C(255) * ((1 << 14) - 64) * 4)  /* KB */ /* 0x3f8040 blocks */
 #define DEFAULT_THIN_POOL_MAX_METADATA_SIZE (DM_THIN_MAX_METADATA_SIZE / 2)  /* KB */
 #define DEFAULT_THIN_POOL_MIN_METADATA_SIZE 2048  /* KB */
 #define DEFAULT_THIN_POOL_OPTIMAL_METADATA_SIZE (128 * 1024) /* KB */
@ -131,7 +129,6 @@
 #define DEFAULT_THIN_POOL_DISCARDS "passdown"
 #define DEFAULT_THIN_POOL_ZERO 1
 #define DEFAULT_POOL_METADATA_SPARE 1 /* thin + cache */
-#define DEFAULT_ZERO_METADATA 1		/* thin + cache */

 #ifdef CACHE_CHECK_NEEDS_CHECK
 #  define DEFAULT_CACHE_CHECK_OPTION1 "-q"
@ -167,7 +164,7 @@
 #define DEFAULT_VDO_INDEX_MEMORY_SIZE_MB	(DM_VDO_INDEX_MEMORY_SIZE_MINIMUM_MB)
 #define DEFAULT_VDO_SLAB_SIZE_MB	(2 * 1024)  // 2GiB ... 19 slabbits
 #define DEFAULT_VDO_ACK_THREADS		(1)
-#define DEFAULT_VDO_BIO_THREADS		(4)
+#define DEFAULT_VDO_BIO_THREADS		(1)
 #define DEFAULT_VDO_BIO_ROTATION	(64)
 #define DEFAULT_VDO_CPU_THREADS		(2)
 #define DEFAULT_VDO_HASH_ZONE_THREADS	(1)
@ -181,7 +178,8 @@
 * VDO pool will reverve some sectors in the front and the back of pool device to avoid
 * seeing same device twice in the system.
 */
-#define DEFAULT_VDO_POOL_HEADER_SIZE_KB  (512)
+#define DEFAULT_VDO_POOL_HEADER_SIZE  (1024)   // 512KiB
+


 #define DEFAULT_FSADM_PATH FSADM_PATH
@ -221,7 +219,7 @@
 #endif

 #define DEFAULT_COMMAND_LOG_REPORT 0
-#define DEFAULT_SYSLOG 0
+#define DEFAULT_SYSLOG 1
 #define DEFAULT_VERBOSE 0
 #define DEFAULT_SILENT 0
 #define DEFAULT_LOGLEVEL 0
@ -320,19 +318,4 @@

 #define DEFAULT_IO_MEMORY_SIZE_KB 8192

-#define DEFAULT_MD_COMPONENT_CHECKS "auto"
-
-#define DEFAULT_DEVICES_FILE "system.devices"
-
-#define DEFAULT_SEARCH_FOR_DEVNAMES "auto"
-
-#define DEFAULT_WWIDS_FILE "/etc/multipath/wwids"
-
-#define DEFAULT_EVENT_ACTIVATION_OPTION1 "service_to_event"
-#define DEFAULT_EVENT_ACTIVATION_OPTIONS "#S" DEFAULT_EVENT_ACTIVATION_OPTION1
-
-#define PVS_ONLINE_DIR DEFAULT_RUN_DIR "/pvs_online"
-#define VGS_ONLINE_DIR DEFAULT_RUN_DIR "/vgs_online"
-#define PVS_LOOKUP_DIR DEFAULT_RUN_DIR "/pvs_lookup"
-
 #endif				/* _LVM_DEFAULTS_H */
--- a/lib/datastruct/str_list.c
+++ b/lib/datastruct/str_list.c
@ -218,7 +218,7 @@ struct dm_list *str_to_str_list(struct dm_pool *mem, const char *str,
 		return NULL;
 	}

-	p1 = str;
+	p1 = p2 = str;
 	while (*p1) {
 		if (!(p2 = strstr(p1, delim)))
 			next = p2 = str + strlen(str);
--- a/lib/device/bcache-utils.c
+++ b/lib/device/bcache-utils.c
@ -39,32 +39,32 @@ static uint64_t _min(uint64_t lhs, uint64_t rhs)

 //----------------------------------------------------------------

-void bcache_prefetch_bytes(struct bcache *cache, int di, uint64_t start, size_t len)
+void bcache_prefetch_bytes(struct bcache *cache, int fd, uint64_t start, size_t len)
 {
 	block_address bb, be;

 	byte_range_to_block_range(cache, start, len, &bb, &be);
 	while (bb < be) {
-		bcache_prefetch(cache, di, bb);
+		bcache_prefetch(cache, fd, bb);
 		bb++;
 	}
 }

 //----------------------------------------------------------------

-bool bcache_read_bytes(struct bcache *cache, int di, uint64_t start, size_t len, void *data)
+bool bcache_read_bytes(struct bcache *cache, int fd, uint64_t start, size_t len, void *data)
 {
 	struct block *b;
 	block_address bb, be;
 	uint64_t block_size = bcache_block_sectors(cache) << SECTOR_SHIFT;
 	uint64_t block_offset = start % block_size;

-	bcache_prefetch_bytes(cache, di, start, len);
+	bcache_prefetch_bytes(cache, fd, start, len);

 	byte_range_to_block_range(cache, start, len, &bb, &be);

 	for (; bb != be; bb++) {
-        	if (!bcache_get(cache, di, bb, 0, &b))
+        	if (!bcache_get(cache, fd, bb, 0, &b))
 			return false;

 		size_t blen = _min(block_size - block_offset, len);
@ -79,21 +79,6 @@ bool bcache_read_bytes(struct bcache *cache, int di, uint64_t start, size_t len,
 	return true;
 }

-bool bcache_invalidate_bytes(struct bcache *cache, int di, uint64_t start, size_t len)
-{
-	block_address bb, be;
-	bool result = true;
-
-	byte_range_to_block_range(cache, start, len, &bb, &be);
-
-	for (; bb != be; bb++) {
-		if (!bcache_invalidate(cache, di, bb))
-			result = false;
-	}
-
-	return result;
-}
-
 //----------------------------------------------------------------

 // Writing bytes and zeroing bytes are very similar, so we factor out
@ -101,8 +86,8 @@ bool bcache_invalidate_bytes(struct bcache *cache, int di, uint64_t start, size_
 
 struct updater;

-typedef bool (*partial_update_fn)(struct updater *u, int di, block_address bb, uint64_t offset, size_t len);
-typedef bool (*whole_update_fn)(struct updater *u, int di, block_address bb, block_address be);
+typedef bool (*partial_update_fn)(struct updater *u, int fd, block_address bb, uint64_t offset, size_t len);
+typedef bool (*whole_update_fn)(struct updater *u, int fd, block_address bb, block_address be);

 struct updater {
 	struct bcache *cache;
@ -111,7 +96,7 @@ struct updater {
 	void *data;
 };

-static bool _update_bytes(struct updater *u, int di, uint64_t start, size_t len)
+static bool _update_bytes(struct updater *u, int fd, uint64_t start, size_t len)
 {
        struct bcache *cache = u->cache;
 	block_address bb, be;
@ -124,12 +109,12 @@ static bool _update_bytes(struct updater *u, int di, uint64_t start, size_t len)
 	// If the last block is partial, we will require a read, so let's 
 	// prefetch it.
 	if ((start + len) % block_size)
-        	bcache_prefetch(cache, di, (start + len) / block_size);
+        	bcache_prefetch(cache, fd, (start + len) / block_size);

 	// First block may be partial
 	if (block_offset) {
        	size_t blen = _min(block_size - block_offset, len);
-		if (!u->partial_fn(u, di, bb, block_offset, blen))
+		if (!u->partial_fn(u, fd, bb, block_offset, blen))
        		return false;

 		len -= blen;
@ -141,7 +126,7 @@ static bool _update_bytes(struct updater *u, int di, uint64_t start, size_t len)

        // Now we write out a set of whole blocks
        nr_whole = len / block_size;
-        if (!u->whole_fn(u, di, bb, bb + nr_whole))
+        if (!u->whole_fn(u, fd, bb, bb + nr_whole))
                return false;

 	bb += nr_whole;
@ -151,29 +136,27 @@ static bool _update_bytes(struct updater *u, int di, uint64_t start, size_t len)
        	return true;

        // Finally we write a partial end block
-        return u->partial_fn(u, di, bb, 0, len);
+        return u->partial_fn(u, fd, bb, 0, len);
 }

 //----------------------------------------------------------------

-static bool _write_partial(struct updater *u, int di, block_address bb,
+static bool _write_partial(struct updater *u, int fd, block_address bb,
                           uint64_t offset, size_t len)
 {
 	struct block *b;

-	if (!bcache_get(u->cache, di, bb, GF_DIRTY, &b))
+	if (!bcache_get(u->cache, fd, bb, GF_DIRTY, &b))
 		return false;

-	if (u->data) {
-		memcpy(((unsigned char *) b->data) + offset, u->data, len);
-		u->data = ((unsigned char *) u->data) + len;
-	}
+	memcpy(((unsigned char *) b->data) + offset, u->data, len);
+	u->data = ((unsigned char *) u->data) + len;

 	bcache_put(b);
 	return true;
 }

-static bool _write_whole(struct updater *u, int di, block_address bb, block_address be)
+static bool _write_whole(struct updater *u, int fd, block_address bb, block_address be)
 {
 	struct block *b;
 	uint64_t block_size = bcache_block_sectors(u->cache) << SECTOR_SHIFT;
@ -181,7 +164,7 @@ static bool _write_whole(struct updater *u, int di, block_address bb, block_addr
 	for (; bb != be; bb++) {
        	// We don't need to read the block since we are overwriting
        	// it completely.
-		if (!bcache_get(u->cache, di, bb, GF_ZERO, &b))
+		if (!bcache_get(u->cache, fd, bb, GF_ZERO, &b))
        		return false;
 		memcpy(b->data, u->data, block_size);
 		u->data = ((unsigned char *) u->data) + block_size;
@ -191,7 +174,7 @@ static bool _write_whole(struct updater *u, int di, block_address bb, block_addr
 	return true;
 }

-bool bcache_write_bytes(struct bcache *cache, int di, uint64_t start, size_t len, void *data)
+bool bcache_write_bytes(struct bcache *cache, int fd, uint64_t start, size_t len, void *data)
 {
        struct updater u;

@ -200,16 +183,16 @@ bool bcache_write_bytes(struct bcache *cache, int di, uint64_t start, size_t len
        u.whole_fn = _write_whole;
        u.data = data;

-	return _update_bytes(&u, di, start, len);
+	return _update_bytes(&u, fd, start, len);
 }

 //----------------------------------------------------------------

-static bool _zero_partial(struct updater *u, int di, block_address bb, uint64_t offset, size_t len)
+static bool _zero_partial(struct updater *u, int fd, block_address bb, uint64_t offset, size_t len)
 {
 	struct block *b;

-	if (!bcache_get(u->cache, di, bb, GF_DIRTY, &b))
+	if (!bcache_get(u->cache, fd, bb, GF_DIRTY, &b))
 		return false;

 	memset(((unsigned char *) b->data) + offset, 0, len);
@ -218,12 +201,12 @@ static bool _zero_partial(struct updater *u, int di, block_address bb, uint64_t
 	return true;
 }

-static bool _zero_whole(struct updater *u, int di, block_address bb, block_address be)
+static bool _zero_whole(struct updater *u, int fd, block_address bb, block_address be)
 {
 	struct block *b;

 	for (; bb != be; bb++) {
-		if (!bcache_get(u->cache, di, bb, GF_ZERO, &b))
+		if (!bcache_get(u->cache, fd, bb, GF_ZERO, &b))
        		return false;
        	bcache_put(b);
 	}
@ -231,7 +214,7 @@ static bool _zero_whole(struct updater *u, int di, block_address bb, block_addre
 	return true;
 }

-bool bcache_zero_bytes(struct bcache *cache, int di, uint64_t start, size_t len)
+bool bcache_zero_bytes(struct bcache *cache, int fd, uint64_t start, size_t len)
 {
        struct updater u;

@ -240,17 +223,17 @@ bool bcache_zero_bytes(struct bcache *cache, int di, uint64_t start, size_t len)
        u.whole_fn = _zero_whole;
        u.data = NULL;

-	return _update_bytes(&u, di, start, len);
+	return _update_bytes(&u, fd, start, len);
 }

 //----------------------------------------------------------------

-static bool _set_partial(struct updater *u, int di, block_address bb, uint64_t offset, size_t len)
+static bool _set_partial(struct updater *u, int fd, block_address bb, uint64_t offset, size_t len)
 {
 	struct block *b;
-	uint8_t val = (u->data) ? *((uint8_t *) u->data) : 0;
+	uint8_t val = *((uint8_t *) u->data);

-	if (!bcache_get(u->cache, di, bb, GF_DIRTY, &b))
+	if (!bcache_get(u->cache, fd, bb, GF_DIRTY, &b))
 		return false;

 	memset(((unsigned char *) b->data) + offset, val, len);
@ -259,14 +242,14 @@ static bool _set_partial(struct updater *u, int di, block_address bb, uint64_t o
 	return true;
 }

-static bool _set_whole(struct updater *u, int di, block_address bb, block_address be)
+static bool _set_whole(struct updater *u, int fd, block_address bb, block_address be)
 {
 	struct block *b;
-	uint8_t val = (u->data) ? *((uint8_t *) u->data) : 0;
+	uint8_t val = *((uint8_t *) u->data);
        uint64_t len = bcache_block_sectors(u->cache) * 512;

 	for (; bb != be; bb++) {
-		if (!bcache_get(u->cache, di, bb, GF_ZERO, &b))
+		if (!bcache_get(u->cache, fd, bb, GF_ZERO, &b))
        		return false;
        	memset((unsigned char *) b->data, val, len);
        	bcache_put(b);
@ -275,7 +258,7 @@ static bool _set_whole(struct updater *u, int di, block_address bb, block_addres
 	return true;
 }

-bool bcache_set_bytes(struct bcache *cache, int di, uint64_t start, size_t len, uint8_t val)
+bool bcache_set_bytes(struct bcache *cache, int fd, uint64_t start, size_t len, uint8_t val)
 {
        struct updater u;

@ -284,6 +267,6 @@ bool bcache_set_bytes(struct bcache *cache, int di, uint64_t start, size_t len,
        u.whole_fn = _set_whole;
        u.data = &val;

-	return _update_bytes(&u, di, start, len);
+	return _update_bytes(&u, fd, start, len);
 }

--- a/lib/device/bcache.c
+++ b/lib/device/bcache.c
@ -33,16 +33,11 @@

 #define SECTOR_SHIFT 9L

-#define FD_TABLE_INC 1024
-static int _fd_table_size;
-static int *_fd_table;
-
-
 //----------------------------------------------------------------

 static void log_sys_warn(const char *call)
 {
-	log_warn("WARNING: %s failed: %s.", call, strerror(errno));
+	log_warn("%s failed: %s", call, strerror(errno));
 }

 // Assumes the list is not empty.
@ -66,17 +61,23 @@ struct control_block {
 struct cb_set {
 	struct dm_list free;
 	struct dm_list allocated;
-	struct control_block vec[];
+	struct control_block *vec;
 } control_block_set;

 static struct cb_set *_cb_set_create(unsigned nr)
 {
-	unsigned i;
-	struct cb_set *cbs = malloc(sizeof(*cbs) + nr * sizeof(*cbs->vec));
+	int i;
+	struct cb_set *cbs = malloc(sizeof(*cbs));

 	if (!cbs)
 		return NULL;

+	cbs->vec = malloc(nr * sizeof(*cbs->vec));
+	if (!cbs->vec) {
+		free(cbs);
+		return NULL;
+	}
+
 	dm_list_init(&cbs->free);
 	dm_list_init(&cbs->allocated);

@ -92,10 +93,11 @@ static void _cb_set_destroy(struct cb_set *cbs)
 	// never be in flight IO.
 	if (!dm_list_empty(&cbs->allocated)) {
 		// bail out
-		log_warn("WARNING: async io still in flight.");
+		log_error("async io still in flight");
 		return;
 	}

+	free(cbs->vec);
 	free(cbs);
 }

@ -153,11 +155,11 @@ static void _async_destroy(struct io_engine *ioe)
 	free(e);
 }

-static int _last_byte_di;
+static int _last_byte_fd;
 static uint64_t _last_byte_offset;
 static int _last_byte_sector_size;

-static bool _async_issue(struct io_engine *ioe, enum dir d, int di,
+static bool _async_issue(struct io_engine *ioe, enum dir d, int fd,
 			 sector_t sb, sector_t se, void *data, void *context)
 {
 	int r;
@ -167,7 +169,6 @@ static bool _async_issue(struct io_engine *ioe, enum dir d, int di,
 	sector_t offset;
 	sector_t nbytes;
 	sector_t limit_nbytes;
-	sector_t orig_nbytes;
 	sector_t extra_nbytes = 0;

 	if (((uintptr_t) data) & e->page_mask) {
@ -181,7 +182,7 @@ static bool _async_issue(struct io_engine *ioe, enum dir d, int di,
 	/*
 	 * If bcache block goes past where lvm wants to write, then clamp it.
 	 */
-	if ((d == DIR_WRITE) && _last_byte_offset && (di == _last_byte_di)) {
+	if ((d == DIR_WRITE) && _last_byte_offset && (fd == _last_byte_fd)) {
 		if (offset > _last_byte_offset) {
 			log_error("Limit write at %llu len %llu beyond last byte %llu",
 				  (unsigned long long)offset,
@ -190,41 +191,11 @@ static bool _async_issue(struct io_engine *ioe, enum dir d, int di,
 			return false;
 		}

-		/*
-		 * If the bcache block offset+len goes beyond where lvm is
-		 * intending to write, then reduce the len being written
-		 * (which is the bcache block size) so we don't write past
-		 * the limit set by lvm.  If after applying the limit, the
-		 * resulting size is not a multiple of the sector size (512
-		 * or 4096) then extend the reduced size to be a multiple of
-		 * the sector size (we don't want to write partial sectors.)
-		 */
 		if (offset + nbytes > _last_byte_offset) {
 			limit_nbytes = _last_byte_offset - offset;
-
-			if (limit_nbytes % _last_byte_sector_size) {
+			if (limit_nbytes % _last_byte_sector_size)
 				extra_nbytes = _last_byte_sector_size - (limit_nbytes % _last_byte_sector_size);

-				/*
-				 * adding extra_nbytes to the reduced nbytes (limit_nbytes)
-				 * should make the final write size a multiple of the
-				 * sector size.  This should never result in a final size
-				 * larger than the bcache block size (as long as the bcache
-				 * block size is a multiple of the sector size).
-				 */
-				if (limit_nbytes + extra_nbytes > nbytes) {
-					log_warn("Skip extending write at %llu len %llu limit %llu extra %llu sector_size %llu",
-						 (unsigned long long)offset,
-						 (unsigned long long)nbytes,
-						 (unsigned long long)limit_nbytes,
-						 (unsigned long long)extra_nbytes,
-						 (unsigned long long)_last_byte_sector_size);
-					extra_nbytes = 0;
-				}
-			}
-
-			orig_nbytes = nbytes;
-
 			if (extra_nbytes) {
 				log_debug("Limit write at %llu len %llu to len %llu rounded to %llu",
 					  (unsigned long long)offset,
@ -239,22 +210,6 @@ static bool _async_issue(struct io_engine *ioe, enum dir d, int di,
 					  (unsigned long long)limit_nbytes);
 				nbytes = limit_nbytes;
 			}
-
-			/*
-			 * This shouldn't happen, the reduced+extended
-			 * nbytes value should never be larger than the
-			 * bcache block size.
-			 */
-			if (nbytes > orig_nbytes) {
-				log_error("Invalid adjusted write at %llu len %llu adjusted %llu limit %llu extra %llu sector_size %llu",
-					  (unsigned long long)offset,
-					  (unsigned long long)orig_nbytes,
-					  (unsigned long long)nbytes,
-					  (unsigned long long)limit_nbytes,
-					  (unsigned long long)extra_nbytes,
-					  (unsigned long long)_last_byte_sector_size);
-				return false;
-			}
 		}
 	}

@ -266,7 +221,7 @@ static bool _async_issue(struct io_engine *ioe, enum dir d, int di,

 	memset(&cb->cb, 0, sizeof(cb->cb));

-	cb->cb.aio_fildes = (int) _fd_table[di];
+	cb->cb.aio_fildes = (int) fd;
 	cb->cb.u.c.buf = data;
 	cb->cb.u.c.offset = offset;
 	cb->cb.u.c.nbytes = nbytes;
@ -274,15 +229,13 @@ static bool _async_issue(struct io_engine *ioe, enum dir d, int di,

 #if 0
 	if (d == DIR_READ) {
-		log_debug("io R off %llu bytes %llu di %d fd %d",
+		log_debug("io R off %llu bytes %llu",
 			  (unsigned long long)cb->cb.u.c.offset,
-			  (unsigned long long)cb->cb.u.c.nbytes,
-			  di, _fd_table[di]);
+			  (unsigned long long)cb->cb.u.c.nbytes);
 	} else {
-		log_debug("io W off %llu bytes %llu di %d fd %d",
+		log_debug("io W off %llu bytes %llu",
 			  (unsigned long long)cb->cb.u.c.offset,
-			  (unsigned long long)cb->cb.u.c.nbytes,
-			  di, _fd_table[di]);
+			  (unsigned long long)cb->cb.u.c.nbytes);
 	}
 #endif

@ -318,7 +271,9 @@ static bool _async_wait(struct io_engine *ioe, io_complete_fn fn)
 	struct async_engine *e = _to_async(ioe);

 	memset(&event, 0, sizeof(event));
-	r = io_getevents(e->aio_context, 1, MAX_EVENT, event, NULL);
+	do {
+		r = io_getevents(e->aio_context, 1, MAX_EVENT, event, NULL);
+	} while (r == -EINTR);

 	if (r < 0) {
 		log_sys_warn("io_getevents");
@ -358,16 +313,10 @@ static unsigned _async_max_io(struct io_engine *e)

 struct io_engine *create_async_io_engine(void)
 {
-	static int _pagesize = 0;
 	int r;
-	struct async_engine *e;
+	struct async_engine *e = malloc(sizeof(*e));

-	if ((_pagesize <= 0) && (_pagesize = sysconf(_SC_PAGESIZE)) < 0) {
-		log_warn("_SC_PAGESIZE returns negative value.");
-		return NULL;
-	}
-
-	if (!(e = malloc(sizeof(*e))))
+	if (!e)
 		return NULL;

 	e->e.destroy = _async_destroy;
@ -390,9 +339,8 @@ struct io_engine *create_async_io_engine(void)
 		return NULL;
 	}

-	e->page_mask = (unsigned) _pagesize - 1;
+	e->page_mask = sysconf(_SC_PAGESIZE) - 1;

-	/* coverity[leaked_storage] 'e' is not leaking */
 	return &e->e;
 }

@ -419,7 +367,7 @@ static void _sync_destroy(struct io_engine *ioe)
        free(e);
 }

-static bool _sync_issue(struct io_engine *ioe, enum dir d, int di,
+static bool _sync_issue(struct io_engine *ioe, enum dir d, int fd,
                        sector_t sb, sector_t se, void *data, void *context)
 {
 	int rv;
@ -435,7 +383,7 @@ static bool _sync_issue(struct io_engine *ioe, enum dir d, int di,
 	}

 	where = sb * 512;
-	off = lseek(_fd_table[di], where, SEEK_SET);
+	off = lseek(fd, where, SEEK_SET);
 	if (off == (off_t) -1) {
 		log_warn("Device seek error %d for offset %llu", errno, (unsigned long long)where);
 		free(io);
@ -450,12 +398,11 @@ static bool _sync_issue(struct io_engine *ioe, enum dir d, int di,
 	/*
 	 * If bcache block goes past where lvm wants to write, then clamp it.
 	 */
-	if ((d == DIR_WRITE) && _last_byte_offset && (di == _last_byte_di)) {
+	if ((d == DIR_WRITE) && _last_byte_offset && (fd == _last_byte_fd)) {
 		uint64_t offset = where;
 		uint64_t nbytes = len;
 		sector_t limit_nbytes = 0;
 		sector_t extra_nbytes = 0;
-		sector_t orig_nbytes = 0;

 		if (offset > _last_byte_offset) {
 			log_error("Limit write at %llu len %llu beyond last byte %llu",
@ -468,30 +415,9 @@ static bool _sync_issue(struct io_engine *ioe, enum dir d, int di,

 		if (offset + nbytes > _last_byte_offset) {
 			limit_nbytes = _last_byte_offset - offset;
-
-			if (limit_nbytes % _last_byte_sector_size) {
+			if (limit_nbytes % _last_byte_sector_size)
 				extra_nbytes = _last_byte_sector_size - (limit_nbytes % _last_byte_sector_size);

-				/*
-				 * adding extra_nbytes to the reduced nbytes (limit_nbytes)
-				 * should make the final write size a multiple of the
-				 * sector size.  This should never result in a final size
-				 * larger than the bcache block size (as long as the bcache
-				 * block size is a multiple of the sector size).
-				 */
-				if (limit_nbytes + extra_nbytes > nbytes) {
-					log_warn("Skip extending write at %llu len %llu limit %llu extra %llu sector_size %llu",
-						 (unsigned long long)offset,
-						 (unsigned long long)nbytes,
-						 (unsigned long long)limit_nbytes,
-						 (unsigned long long)extra_nbytes,
-						 (unsigned long long)_last_byte_sector_size);
-					extra_nbytes = 0;
-				}
-			}
-
-			orig_nbytes = nbytes;
-
 			if (extra_nbytes) {
 				log_debug("Limit write at %llu len %llu to len %llu rounded to %llu",
 					  (unsigned long long)offset,
@ -506,23 +432,6 @@ static bool _sync_issue(struct io_engine *ioe, enum dir d, int di,
 					  (unsigned long long)limit_nbytes);
 				nbytes = limit_nbytes;
 			}
-
-			/*
-			 * This shouldn't happen, the reduced+extended
-			 * nbytes value should never be larger than the
-			 * bcache block size.
-			 */
-			if (nbytes > orig_nbytes) {
-				log_error("Invalid adjusted write at %llu len %llu adjusted %llu limit %llu extra %llu sector_size %llu",
-					  (unsigned long long)offset,
-					  (unsigned long long)orig_nbytes,
-					  (unsigned long long)nbytes,
-					  (unsigned long long)limit_nbytes,
-					  (unsigned long long)extra_nbytes,
-					  (unsigned long long)_last_byte_sector_size);
-				free(io);
-				return false;
-			}
 		}

 		where = offset;
@ -531,9 +440,9 @@ static bool _sync_issue(struct io_engine *ioe, enum dir d, int di,

 	while (pos < len) {
 		if (d == DIR_READ)
-			rv = read(_fd_table[di], (char *)data + pos, len - pos);
+			rv = read(fd, (char *)data + pos, len - pos);
 		else
-			rv = write(_fd_table[di], (char *)data + pos, len - pos);
+			rv = write(fd, (char *)data + pos, len - pos);

 		if (rv == -1 && errno == EINTR)
 			continue;
@ -607,8 +516,7 @@ struct io_engine *create_sync_io_engine(void)
        e->e.wait = _sync_wait;
        e->e.max_io = _sync_max_io;

-	dm_list_init(&e->complete);
-	/* coverity[leaked_storage] 'e' is not leaking */
+        dm_list_init(&e->complete);
        return &e->e;
 }

@ -694,7 +602,7 @@ struct bcache {
 //----------------------------------------------------------------

 struct key_parts {
-	uint32_t di;
+	uint32_t fd;
 	uint64_t b;
 } __attribute__ ((packed));

@ -703,12 +611,12 @@ union key {
        uint8_t bytes[12];
 };

-static struct block *_block_lookup(struct bcache *cache, int di, uint64_t i)
+static struct block *_block_lookup(struct bcache *cache, int fd, uint64_t i)
 {
 	union key k;
 	union radix_value v;

-	k.parts.di = di;
+	k.parts.fd = fd;
 	k.parts.b = i;

 	if (radix_tree_lookup(cache->rtree, k.bytes, k.bytes + sizeof(k.bytes), &v))
@ -722,7 +630,7 @@ static bool _block_insert(struct block *b)
        union key k;
        union radix_value v;

-        k.parts.di = b->di;
+        k.parts.fd = b->fd;
        k.parts.b = b->index;
        v.ptr = b;

@ -733,10 +641,10 @@ static void _block_remove(struct block *b)
 {
        union key k;

-        k.parts.di = b->di;
+        k.parts.fd = b->fd;
        k.parts.b = b->index;

-	(void) radix_tree_remove(b->cache->rtree, k.bytes, k.bytes + sizeof(k.bytes));
+	radix_tree_remove(b->cache->rtree, k.bytes, k.bytes + sizeof(k.bytes));
 }

 //----------------------------------------------------------------
@ -875,7 +783,7 @@ static void _issue_low_level(struct block *b, enum dir d)

 	dm_list_move(&cache->io_pending, &b->list);

-	if (!cache->engine->issue(cache->engine, d, b->di, sb, se, b->data, b)) {
+	if (!cache->engine->issue(cache->engine, d, b->fd, sb, se, b->data, b)) {
 		/* FIXME: if io_submit() set an errno, return that instead of EIO? */
 		_complete_io(b, -EIO);
 		return;
@ -951,26 +859,21 @@ static struct block *_find_unused_clean_block(struct bcache *cache)
 	return NULL;
 }

-static struct block *_new_block(struct bcache *cache, int di, block_address i, bool can_wait)
+static struct block *_new_block(struct bcache *cache, int fd, block_address i, bool can_wait)
 {
 	struct block *b;

 	b = _alloc_block(cache);
-	while (!b) {
+	while (!b && !dm_list_empty(&cache->clean)) {
 		b = _find_unused_clean_block(cache);
 		if (!b) {
 			if (can_wait) {
 				if (dm_list_empty(&cache->io_pending))
 					_writeback(cache, 16);  // FIXME: magic number
-				_wait_all(cache);
-				if (dm_list_size(&cache->errored) >= cache->max_io) {
-					log_debug("bcache no new blocks for di %d index %u with >%d errors.",
-						  di, (uint32_t) i, cache->max_io);
-					return NULL;
-				}
+				_wait_io(cache);
 			} else {
-				log_debug("bcache no new blocks for di %d index %u",
-					  di, (uint32_t) i);
+				log_error("bcache no new blocks for fd %d index %u",
+					  fd, (uint32_t) i);
 				return NULL;
 			}
 		}
@ -979,7 +882,7 @@ static struct block *_new_block(struct bcache *cache, int di, block_address i, b
 	if (b) {
 		dm_list_init(&b->list);
 		b->flags = 0;
-		b->di = di;
+		b->fd = fd;
 		b->index = i;
 		b->ref_count = 0;
 		b->error = 0;
@ -1025,10 +928,10 @@ static void _miss(struct bcache *cache, unsigned flags)
 }

 static struct block *_lookup_or_read_block(struct bcache *cache,
-				  	   int di, block_address i,
+				  	   int fd, block_address i,
 					   unsigned flags)
 {
-	struct block *b = _block_lookup(cache, di, i);
+	struct block *b = _block_lookup(cache, fd, i);

 	if (b) {
 		// FIXME: this is insufficient.  We need to also catch a read
@ -1053,7 +956,7 @@ static struct block *_lookup_or_read_block(struct bcache *cache,
 	} else {
 		_miss(cache, flags);

-		b = _new_block(cache, di, i, true);
+		b = _new_block(cache, fd, i, true);
 		if (b) {
 			if (flags & GF_ZERO)
 				_zero_block(b);
@ -1095,12 +998,11 @@ static void _preemptive_writeback(struct bcache *cache)
 struct bcache *bcache_create(sector_t block_sectors, unsigned nr_cache_blocks,
 			     struct io_engine *engine)
 {
-	static long _pagesize = 0;
 	struct bcache *cache;
 	unsigned max_io = engine->max_io(engine);
-	int i;
+	long pgsize = sysconf(_SC_PAGESIZE);

-	if ((_pagesize <= 0) && ((_pagesize = sysconf(_SC_PAGESIZE)) < 0)) {
+	if (pgsize < 0) {
 		log_warn("WARNING: _SC_PAGESIZE returns negative value.");
 		return NULL;
 	}
@ -1115,7 +1017,7 @@ struct bcache *bcache_create(sector_t block_sectors, unsigned nr_cache_blocks,
 		return NULL;
 	}

-	if (block_sectors & ((_pagesize >> SECTOR_SHIFT) - 1)) {
+	if (block_sectors & ((pgsize >> SECTOR_SHIFT) - 1)) {
 		log_warn("bcache block size must be a multiple of page size");
 		return NULL;
 	}
@ -1152,25 +1054,13 @@ struct bcache *bcache_create(sector_t block_sectors, unsigned nr_cache_blocks,
 	cache->write_misses = 0;
 	cache->prefetches = 0;

-	if (!_init_free_list(cache, nr_cache_blocks, _pagesize)) {
+	if (!_init_free_list(cache, nr_cache_blocks, pgsize)) {
 		cache->engine->destroy(cache->engine);
 		radix_tree_destroy(cache->rtree);
 		free(cache);
 		return NULL;
 	}

-	_fd_table_size = FD_TABLE_INC;
-
-	if (!(_fd_table = malloc(sizeof(int) * _fd_table_size))) {
-		cache->engine->destroy(cache->engine);
-		radix_tree_destroy(cache->rtree);
-		free(cache);
-		return NULL;
-	}
-
-	for (i = 0; i < _fd_table_size; i++)
-		_fd_table[i] = -1;
-
 	return cache;
 }

@ -1186,9 +1076,6 @@ void bcache_destroy(struct bcache *cache)
 	radix_tree_destroy(cache->rtree);
 	cache->engine->destroy(cache->engine);
 	free(cache);
-	free(_fd_table);
-	_fd_table = NULL;
-	_fd_table_size = 0;
 }

 sector_t bcache_block_sectors(struct bcache *cache)
@ -1206,13 +1093,13 @@ unsigned bcache_max_prefetches(struct bcache *cache)
 	return cache->max_io;
 }

-void bcache_prefetch(struct bcache *cache, int di, block_address i)
+void bcache_prefetch(struct bcache *cache, int fd, block_address i)
 {
-	struct block *b = _block_lookup(cache, di, i);
+	struct block *b = _block_lookup(cache, fd, i);

 	if (!b) {
 		if (cache->nr_io_pending < cache->max_io) {
-			b = _new_block(cache, di, i, false);
+			b = _new_block(cache, fd, i, false);
 			if (b) {
 				cache->prefetches++;
 				_issue_read(b);
@ -1230,15 +1117,12 @@ static void _recycle_block(struct bcache *cache, struct block *b)
 	_free_block(b);
 }

-bool bcache_get(struct bcache *cache, int di, block_address i,
+bool bcache_get(struct bcache *cache, int fd, block_address i,
 	        unsigned flags, struct block **result)
 {
 	struct block *b;

-	if (di >= _fd_table_size)
-		goto bad;
-
-	b = _lookup_or_read_block(cache, di, i, flags);
+	b = _lookup_or_read_block(cache, fd, i, flags);
 	if (b) {
 		if (b->error) {
 			if (b->io_dir == DIR_READ) {
@ -1257,10 +1141,10 @@ bool bcache_get(struct bcache *cache, int di, block_address i,
 		*result = b;
 		return true;
 	}
-bad:
+
 	*result = NULL;

-	log_error("bcache failed to get block %u di %d", (uint32_t) i, di);
+	log_error("bcache failed to get block %u fd %d", (uint32_t) i, fd);
 	return false;
 }

@ -1324,7 +1208,7 @@ static bool _invalidate_block(struct bcache *cache, struct block *b)

 	if (b->ref_count) {
 		log_warn("bcache_invalidate: block (%d, %llu) still held",
-			 b->di, (unsigned long long) b->index);
+			 b->fd, (unsigned long long) b->index);
 		return false;
 	}

@ -1341,9 +1225,9 @@ static bool _invalidate_block(struct bcache *cache, struct block *b)
 	return true;
 }

-bool bcache_invalidate(struct bcache *cache, int di, block_address i)
+bool bcache_invalidate(struct bcache *cache, int fd, block_address i)
 {
-	return _invalidate_block(cache, _block_lookup(cache, di, i));
+	return _invalidate_block(cache, _block_lookup(cache, fd, i));
 }

 //----------------------------------------------------------------
@ -1359,27 +1243,27 @@ static bool _writeback_v(struct radix_tree_iterator *it,
 	struct block *b = v.ptr;

 	if (_test_flags(b, BF_DIRTY))
-		_issue_write(b);
+        	_issue_write(b);

-	return true;
+        return true;
 }

 static bool _invalidate_v(struct radix_tree_iterator *it,
                          uint8_t *kb, uint8_t *ke, union radix_value v)
 {
 	struct block *b = v.ptr;
-	struct invalidate_iterator *iit = container_of(it, struct invalidate_iterator, it);
+        struct invalidate_iterator *iit = container_of(it, struct invalidate_iterator, it);

 	if (b->error || _test_flags(b, BF_DIRTY)) {
-		log_warn("WARNING: bcache_invalidate: block (%d, %llu) still dirty.",
-			 b->di, (unsigned long long) b->index);
-		iit->success = false;
-		return true;
+        	log_warn("bcache_invalidate: block (%d, %llu) still dirty",
+                         b->fd, (unsigned long long) b->index);
+        	iit->success = false;
+        	return true;
 	}

 	if (b->ref_count) {
-		log_warn("WARNING: bcache_invalidate: block (%d, %llu) still held.",
-			 b->di, (unsigned long long) b->index);
+		log_warn("bcache_invalidate: block (%d, %llu) still held",
+			 b->fd, (unsigned long long) b->index);
 		iit->success = false;
 		return true;
 	}
@ -1392,137 +1276,42 @@ static bool _invalidate_v(struct radix_tree_iterator *it,
 	return true;
 }

-bool bcache_invalidate_di(struct bcache *cache, int di)
+bool bcache_invalidate_fd(struct bcache *cache, int fd)
 {
-	union key k;
+        union key k;
 	struct invalidate_iterator it;

-	k.parts.di = di;
+	k.parts.fd = fd;

 	it.it.visit = _writeback_v;
-	radix_tree_iterate(cache->rtree, k.bytes, k.bytes + sizeof(k.parts.di), &it.it);
+	radix_tree_iterate(cache->rtree, k.bytes, k.bytes + sizeof(k.parts.fd), &it.it);

 	_wait_all(cache);

 	it.success = true;
 	it.it.visit = _invalidate_v;
-	radix_tree_iterate(cache->rtree, k.bytes, k.bytes + sizeof(k.parts.di), &it.it);
-
-	if (it.success)
-		(void) radix_tree_remove_prefix(cache->rtree, k.bytes, k.bytes + sizeof(k.parts.di));
-
+	radix_tree_iterate(cache->rtree, k.bytes, k.bytes + sizeof(k.parts.fd), &it.it);
+	radix_tree_remove_prefix(cache->rtree, k.bytes, k.bytes + sizeof(k.parts.fd));
 	return it.success;
 }

 //----------------------------------------------------------------

-static bool _abort_v(struct radix_tree_iterator *it,
-                     uint8_t *kb, uint8_t *ke, union radix_value v)
+void bcache_set_last_byte(struct bcache *cache, int fd, uint64_t offset, int sector_size)
 {
-	struct block *b = v.ptr;
-
-	if (b->ref_count) {
-		log_fatal("bcache_abort: block (%d, %llu) still held",
-			 b->di, (unsigned long long) b->index);
-		return true;
-	}
-
-	_unlink_block(b);
-	_free_block(b);
-
-	// We can't remove the block from the radix tree yet because
-	// we're in the middle of an iteration.
-	return true;
-}
-
-void bcache_abort_di(struct bcache *cache, int di)
-{
-	union key k;
-	struct radix_tree_iterator it;
-
-	k.parts.di = di;
-
-	it.visit = _abort_v;
-	radix_tree_iterate(cache->rtree, k.bytes, k.bytes + sizeof(k.parts.di), &it);
-	(void) radix_tree_remove_prefix(cache->rtree, k.bytes, k.bytes + sizeof(k.parts.di));
-}
-
-//----------------------------------------------------------------
-
-void bcache_set_last_byte(struct bcache *cache, int di, uint64_t offset, int sector_size)
-{
-	_last_byte_di = di;
+	_last_byte_fd = fd;
 	_last_byte_offset = offset;
 	_last_byte_sector_size = sector_size;
 	if (!sector_size)
 		_last_byte_sector_size = 512;
 }

-void bcache_unset_last_byte(struct bcache *cache, int di)
+void bcache_unset_last_byte(struct bcache *cache, int fd)
 {
-	if (_last_byte_di == di) {
-		_last_byte_di = 0;
+	if (_last_byte_fd == fd) {
+		_last_byte_fd = 0;
 		_last_byte_offset = 0;
 		_last_byte_sector_size = 0;
 	}
 }

-int bcache_set_fd(int fd)
-{
-	int *new_table = NULL;
-	int new_size = 0;
-	int i;
-
- retry:
-	for (i = 0; i < _fd_table_size; i++) {
-		if (_fd_table[i] == -1) {
-			_fd_table[i] = fd;
-			return i;
-		}
-	}
-
-	/* already tried once, shouldn't happen */
-	if (new_size)
-		return -1;
-
-	new_size = _fd_table_size + FD_TABLE_INC;
-
-	new_table = realloc(_fd_table, sizeof(int) * new_size);
-	if (!new_table) {
-		log_error("Cannot extend bcache fd table");
-		return -1;
-	}
-
-	for (i = _fd_table_size; i < new_size; i++)
-		new_table[i] = -1;
-
-	_fd_table = new_table;
-	_fd_table_size = new_size;
-
-	goto retry;
-}
-
-/*
- * Should we check for unflushed or inprogress io on an fd
- * prior to doing clear_fd or change_fd?  (To catch mistakes;
- * the caller should be smart enough to not do that.)
- */
-
-void bcache_clear_fd(int di)
-{
-	if (di >= _fd_table_size)
-		return;
-	_fd_table[di] = -1;
-}
-
-int bcache_change_fd(int di, int fd)
-{
-	if (di >= _fd_table_size)
-		return 0;
-	if (di < 0) {
-		log_error(INTERNAL_ERROR "Cannot change not opened DI with FD:%d", fd);
-		return 0;
-	}
-	_fd_table[di] = fd;
-	return 1;
-}
--- a/lib/device/bcache.h
+++ b/lib/device/bcache.h
@ -16,12 +16,19 @@
 #define BCACHE_H

 #include "device_mapper/all.h"
-#include "base/memory/container_of.h"

 #include <linux/fs.h>
 #include <stdint.h>
 #include <stdbool.h>

+/*----------------------------------------------------------------*/
+
+// FIXME: move somewhere more sensible
+#define container_of(v, t, head) \
+    ((t *)((const char *)(v) - (const char *)&((t *) 0)->head))
+
+/*----------------------------------------------------------------*/
+
 enum dir {
 	DIR_READ,
 	DIR_WRITE
@ -34,7 +41,7 @@ typedef void io_complete_fn(void *context, int io_error);

 struct io_engine {
 	void (*destroy)(struct io_engine *e);
-	bool (*issue)(struct io_engine *e, enum dir d, int di,
+	bool (*issue)(struct io_engine *e, enum dir d, int fd,
 		      sector_t sb, sector_t se, void *data, void *context);
 	bool (*wait)(struct io_engine *e, io_complete_fn fn);
 	unsigned (*max_io)(struct io_engine *e);
@ -48,7 +55,7 @@ struct io_engine *create_sync_io_engine(void);
 struct bcache;
 struct block {
 	/* clients may only access these three fields */
-	int di;
+	int fd;
 	uint64_t index;
 	void *data;

@ -106,12 +113,12 @@ unsigned bcache_max_prefetches(struct bcache *cache);
 * they complete.  But we're talking a very small difference, and it's worth it
 * to keep callbacks out of this interface.
 */
-void bcache_prefetch(struct bcache *cache, int di, block_address index);
+void bcache_prefetch(struct bcache *cache, int fd, block_address index);

 /*
 * Returns true on success.
 */
-bool bcache_get(struct bcache *cache, int di, block_address index,
+bool bcache_get(struct bcache *cache, int fd, block_address index,
 	        unsigned flags, struct block **result);
 void bcache_put(struct block *b);

@ -129,42 +136,30 @@ bool bcache_flush(struct bcache *cache);
 * 
 * If the block is currently held false will be returned.
 */
-bool bcache_invalidate(struct bcache *cache, int di, block_address index);
+bool bcache_invalidate(struct bcache *cache, int fd, block_address index);

 /*
 * Invalidates all blocks on the given descriptor.  Call this before closing
 * the descriptor to make sure everything is written back.
 */
-bool bcache_invalidate_di(struct bcache *cache, int di);
+bool bcache_invalidate_fd(struct bcache *cache, int fd);

-/*
- * Call this function if flush, or invalidate fail and you do not
- * wish to retry the writes.  This will throw away any dirty data
- * not written.  If any blocks for di are held, then it will call
- * abort().
- */
-void bcache_abort_di(struct bcache *cache, int di);

 //----------------------------------------------------------------
 // The next four functions are utilities written in terms of the above api.
 
 // Prefetches the blocks neccessary to satisfy a byte range.
-void bcache_prefetch_bytes(struct bcache *cache, int di, uint64_t start, size_t len);
+void bcache_prefetch_bytes(struct bcache *cache, int fd, uint64_t start, size_t len);

 // Reads, writes and zeroes bytes.  Returns false if errors occur.
-bool bcache_read_bytes(struct bcache *cache, int di, uint64_t start, size_t len, void *data);
-bool bcache_write_bytes(struct bcache *cache, int di, uint64_t start, size_t len, void *data);
-bool bcache_zero_bytes(struct bcache *cache, int di, uint64_t start, size_t len);
-bool bcache_set_bytes(struct bcache *cache, int di, uint64_t start, size_t len, uint8_t val);
-bool bcache_invalidate_bytes(struct bcache *cache, int di, uint64_t start, size_t len);
+bool bcache_read_bytes(struct bcache *cache, int fd, uint64_t start, size_t len, void *data);
+bool bcache_write_bytes(struct bcache *cache, int fd, uint64_t start, size_t len, void *data);
+bool bcache_zero_bytes(struct bcache *cache, int fd, uint64_t start, size_t len);
+bool bcache_set_bytes(struct bcache *cache, int fd, uint64_t start, size_t len, uint8_t val);

-void bcache_set_last_byte(struct bcache *cache, int di, uint64_t offset, int sector_size);
-void bcache_unset_last_byte(struct bcache *cache, int di);
+void bcache_set_last_byte(struct bcache *cache, int fd, uint64_t offset, int sector_size);
+void bcache_unset_last_byte(struct bcache *cache, int fd);

 //----------------------------------------------------------------

-int bcache_set_fd(int fd); /* returns di */
-void bcache_clear_fd(int di);
-int bcache_change_fd(int di, int fd);
-
 #endif
--- a/lib/device/dev-cache.c
+++ b/lib/device/dev-cache.c
--- a/lib/device/dev-cache.h
+++ b/lib/device/dev-cache.h
@ -17,7 +17,6 @@
 #define _LVM_DEV_CACHE_H

 #include "lib/device/device.h"
-#include "lib/device/dev-type.h"
 #include "lib/misc/lvm-wrappers.h"

 struct cmd_context;
@ -28,12 +27,13 @@ struct cmd_context;
 struct dev_filter {
 	int (*passes_filter) (struct cmd_context *cmd, struct dev_filter *f, struct device *dev, const char *use_filter_name);
 	void (*destroy) (struct dev_filter *f);
-	void (*wipe) (struct cmd_context *cmd, struct dev_filter *f, struct device *dev, const char *use_filter_name);
+	void (*wipe) (struct dev_filter *f);
 	void *private;
 	unsigned use_count;
 	const char *name;
 };

+int dev_cache_index_devs(void);
 struct dm_list *dev_cache_get_dev_list_for_vgid(const char *vgid);
 struct dm_list *dev_cache_get_dev_list_for_lvid(const char *lvid);

@ -48,16 +48,15 @@ int dev_cache_exit(void);
 */
 int dev_cache_check_for_open_devices(void);

-void dev_cache_scan(struct cmd_context *cmd);
+void dev_cache_scan(void);
 int dev_cache_has_scanned(void);

 int dev_cache_add_dir(const char *path);
 struct device *dev_cache_get(struct cmd_context *cmd, const char *name, struct dev_filter *f);
+const char *dev_cache_filtered_reason(const char *name);

 struct device *dev_cache_get_by_devt(struct cmd_context *cmd, dev_t device, struct dev_filter *f, int *filtered);

-struct device *dev_hash_get(const char *name);
-
 void dev_set_preferred_name(struct dm_str_list *sl, struct device *dev);

 /*
@ -68,20 +67,8 @@ struct dev_iter *dev_iter_create(struct dev_filter *f, int unused);
 void dev_iter_destroy(struct dev_iter *iter);
 struct device *dev_iter_get(struct cmd_context *cmd, struct dev_iter *iter);

+void dev_reset_error_count(struct cmd_context *cmd);
+
 void dev_cache_failed_path(struct device *dev, const char *path);

-bool dev_cache_has_md_with_end_superblock(struct dev_types *dt);
-
-int get_sysfs_value(const char *path, char *buf, size_t buf_size, int error_if_no_value);
-int get_dm_uuid_from_sysfs(char *buf, size_t buf_size, int major, int minor);
-
-int setup_devices_file(struct cmd_context *cmd);
-int setup_devices(struct cmd_context *cmd);
-int setup_device(struct cmd_context *cmd, const char *devname);
-
-/* Normal device setup functions are split up for pvscan optimization. */
-int setup_devices_for_pvscan_cache(struct cmd_context *cmd);
-int setup_devname_in_dev_cache(struct cmd_context *cmd, const char *devname);
-int setup_devno_in_dev_cache(struct cmd_context *cmd, dev_t devno);
-
 #endif
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
David Teigland	adcdc20a67	improve some warning messages	2019-04-11 13:48:43 -05:00
David Teigland	dbd2e3855c	remove unused or moved code this would have been done as part of the prior commit, but 'diff' was becoming confused and made as mess.	2019-04-11 13:48:43 -05:00
David Teigland	22c55786d9	improve reading and repairing vg metadata The fact that vg repair is implemented as a part of vg read has led to a messy and complicated implementation of vg_read, and limited and uncontrolled repair capability. This splits read and repair apart. Summary ------- - take all kinds of various repairs out of vg_read - vg_read no longer writes anything - vg_read now simply reads and returns vg metadata - vg_read ignores bad or old copies of metadata - vg_read proceeds with a single good copy of metadata - improve error checks and handling when reading - keep track of bad (corrupt) copies of metadata in lvmcache - keep track of old (seqno) copies of metadata in lvmcache - keep track of outdated PVs in lvmcache - vg_write will do basic repairs - new command vgck --updatemetdata will do all repairs Details ------- - In scan, do not delete dev from lvmcache if reading/processing fails; the dev is still present, and removing it makes it look like the dev is not there. Records are now kept about the problems with each PV so they be fixed/repaired in the appropriate places. - In scan, record a bad mda on failure, and delete the mda from mda in use list so it will not be used by vg_read or vg_write, only by repair. - In scan, succeed if any good mda on a device is found, instead of failing if any is bad. The bad/old copies of metadata should not interfere with normal usage while good copies can be used. - In scan, add a record of old mdas in lvmcache for later, do not repair them while reading, and do not let them prevent us from finding and using a good copy of metadata from elsewhere. One result is that "inconsistent metadata" is no longer a read error, but instead a record in lvmcache that can be addressed separate from the read. - Treat a dev with no good mdas like a dev with no mdas, which is an existing case we already handle. - Don't use a fake vg "handle" for returning an error from vg_read, or the vg_read_error function for getting that error number; just return null if the vg cannot be read or used, and an error_flags arg with flags set for the specific kind of error (which can be used later for determining the kind of repair.) - Saving an original copy of the vg metadata, for purposes of reverting a write, is now done explicitly in vg_read instead of being hidden in the vg_make_handle function. - When a vg is not accessible due to "access restrictions" but is otherwise fine, return the vg through the new error_vg arg so that process_each_pv can skip the PVs in the VG while processing. (This is a temporary accomodation for the way process_each_pv tracks which devs have been looked at, and can be dropped later when process_each_pv implementation dev tracking is changed.) - vg_read does not try to fix or recover a vg, but now just reads the metadata, checks access restrictions and returns it. (Checking access restrictions might be better done outside of vg_read, but this is a later improvement.) - Move vg_read/_vg_read and its helper functions to read.c (mainly so that the diff is cleaner and more readable.) - helper functions moved to read.c remain largley unchanged: _is_foreign_vg _check_pv_ext _check_devs_used_correspond_with_lv _check_devs_used_correspond_with_vg _destroy_fid _access_vg_clustered _allow_extra_system_id _access_vg_lock_type is_system_id_allowed _access_vg_systemid - _vg_read now simply makes one attempt to read metadata from each mda, and uses the most recent copy to return to the caller in the form of a 'vg' struct. (bad mdas were excluded during the scan and are not retried) (old mdas were not excluded during scan and are retried here) - vg_read uses _vg_read to get the latest copy of metadata from mdas, and then makes various checks against it to produce warnings, and to check if VG access is allowed (access restrictions include: writable, foreign, shared, clustered, missing pvs). - Things that were previously silently/automatically written by vg_read that are now done by vg_write, based on the records made in lvmcache during the scan and read: . clearing the missing flag . updating old copies of metadata . clearing outdated pvs . updating pv header flags - Bad/corrupt metadata are now repaired; they were not before. Test changes ------------ - A read command no longer writes the VG to repair it, so add a write command to do a repair. (inconsistent-metadata, unlost-pv) - When a missing PV is removed from a VG, and then the device is enabled again, vgck --updatemetadata is needed to clear the outdated PV before it can be used again, where it wasn't before. (lvconvert-repair-policy, lvconvert-repair-raid, lvconvert-repair, mirror-vgreduce-removemissing, pv-ext-flags, unlost-pv) Reading bad/old metadata ------------------------ - "bad metadata": the mda_header or metadata text has invalid fields or can't be parsed by lvm. This is a form of corruption that would not be caused by known failure scenarios. A checksum error is typically included among the errors reported. - "old metadata": a valid copy of the metadata that has a smaller seqno than other copies of the metadata. This can happen if the device failed, or io failed, or lvm failed while commiting new metadata to all the metadata areas. Old metadata on a PV that has been removed from the VG is the "outdated" case below. When a VG has some PVs with bad/old metadata, lvm can simply ignore the bad/old copies, and use a good copy. This is why there are multiple copies of the metadata -- so it's available even when some of the copies cannot be used. The bad/old copies do not have to be repaired before the VG can be used (the repair can happen later.) A PV with no good copies of the metadata simply falls back to being treated like a PV with no mdas; a common and harmless configuration. When bad/old metadata exists, lvm warns the user about it, and suggests repairing it using a new metadata repair command. Bad metadata in particular is something that users will want to investigate and repair themselves, since it should not happen and may indicate some other problem that needs to be fixed. PVs with bad/old metadata are not the same as missing devices. Missing devices will block various kinds of VG modification or activation, but bad/old metadata will not. Previously, lvm would attempt to repair bad/old metadata whenever it was read. This was unnecessary since lvm does not require every copy of the metadata to be used. It would also hide potential problems that should be investigated by the user. It was also dangerous in cases where the VG was on shared storage. The user is now allowed to investigate potential problems and decide how and when to repair them. Repairing bad/old metadata -------------------------- When label scan sees bad metadata in an mda, that mda is removed from the lvmcache info->mdas list. This means that vg_read will skip it, and not attempt to read/process it again. If it was the only in-use mda on a PV, that PV is treated like a PV with no mdas. It also means that vg_write will also skip the bad mda, and not attempt to write new metadata to it. The only way to repair bad metadata is with the metadata repair command. When label scan sees old metadata in an mda, that mda is kept in the lvmcache info->mdas list. This means that vg_read will read/process it again, and likely see the same mismatch with the other copies of the metadata. Like the label_scan, the vg_read will simply ignore the old copy of the metadata and use the latest copy. If the command is modifying the vg (e.g. lvcreate), then vg_write, which writes new metadata to every mda on info->mdas, will write the new metadata to the mda that had the old version. If successful, this will resolve the old metadata problem (without needing to run a metadata repair command.) Outdated PVs ------------ An outdated PV is a PV that has an old copy of VG metadata that shows it is a member of the VG, but the latest copy of the VG metadata does not include this PV. This happens if the PV is disconnected, vgreduce --removemissing is run to remove the PV from the VG, then the PV is reconnected. In this case, the outdated PV needs have its outdated metadata removed and the PV used flag needs to be cleared. This repair will be done by the subsequent repair command. It is also done if vgremove is run on the VG. MISSING PVs ----------- When a device is missing, most commands will refuse to modify the VG. This is the simple case. More complicated is when a command is allowed to modify the VG while it is missing a device. When a VG is written while a device is missing for one of it's PVs, the VG metadata includes the MISSING_PV flag on the PV with the missing device. When the VG is next used, it needs to be treated as if this PV with the MISSING flag is still missing, even if the device has reappeared. vgreduce --removemissing will remove PVs with missing devices, or PVs with the MISSING flag where the device has reappeared. vgextend --restoremissing will clear the MISSING flag on PVs where the device has reappeared, allowing the VG to be used normally. This must be done with caution since the reappeared device may have old data that is inconsistent with data on other PVs. Bad mda repair -------------- The new command: vgck --updatemetadata VG first uses vg_write to repair old metadata, and other basic issues mentioned above (old metadata, outdated PVs, pv_header flags, MISSING_PV flags). It will also go further and repair bad metadata: . text metadata that has a bad checksum . text metadata that is not parsable . corrupt mda_header checksum and version fields	2019-04-11 13:48:26 -05:00
David Teigland	a02cda4e70	add a warning message when updating old metadata in an mda that had previously not been updated	2019-04-11 12:03:04 -05:00
David Teigland	c36d9a73ac	vgcfgbackup add error messages	2019-04-11 12:03:04 -05:00
David Teigland	77c8e031af	vgck --updatemetadata is a new command uses vg_write to correct more common or less severe issues, and also adds the ability to repair some metadata corruption that couldn't be handled previously.	2019-04-11 12:03:04 -05:00
David Teigland	92534a31eb	move pv header repairs to vg_write Correct PV header in-use or version fields from vg_write instead of vg_read.	2019-04-11 12:03:04 -05:00
David Teigland	b1ceee55a6	process_each_pv handle outdated pvs process_each_pv should account for outdated pvs in the list of all devices it is processing.	2019-04-11 12:03:04 -05:00
David Teigland	4de9e82b75	move wipe_outdated_pvs to vg_write and implement it based on a device, not based on a pv struct (which is not available when the device is not a part of the vg.) currently only the vgremove command wipes outdated pvs until more advanced recovery is added in a subsequent commit	2019-04-11 12:03:04 -05:00
David Teigland	a3601b4004	create separate lvmcache update functions for read and write The vg read and vg write cases need to update lvmcache differently, so create separate functions for them. The read case now handles checking for outdated mdas and moves them aside into a new list to be repaired in a subsequent commit.	2019-04-11 12:03:04 -05:00
David Teigland	21f7dfe510	fix vg_commit return value The existing comment was desribing the correct behavior, but the code didn't match. The commit is successful if one mda was committed. Making it depend on the result of the internal lvmcache update was wrong.	2019-04-11 12:03:04 -05:00
David Teigland	da39cf4a9e	change args for text label read function Have the caller pass the label_sector to the read function so the read function can set the sector field in the label struct, instead of having the read function return a pointer to the label for the caller to set the sector field. Also have the read function return a flag indicating to the caller that the scanned device was identified as a duplicate pv.	2019-04-11 12:03:04 -05:00
David Teigland	b536ae04d5	add mda arg to add_mda Allow the caller of lvmcache_add_mda() to have the new mda returned.	2019-04-11 12:03:04 -05:00
David Teigland	ce8d1ed130	keep track of which mdas have old metadata in lvmcache This will be used for more advanced repair in a subsequent commit.	2019-04-11 12:03:04 -05:00
David Teigland	a812f98c42	ability to keep track of outdated pvs in lvmcache Outdated PVs hold metadata for VG from which they have been removed. Add the ability to keep track of these in lvmcache. This will be used for more advanced repair in a subsequent commit.	2019-04-11 12:03:04 -05:00
David Teigland	838ba5930c	ability to keep track of bad mdas in lvmcache mda's that cannot be processed by lvm because of some corruption can be kept on a separate list. These will be used for more advanced repair in a subsequent commit.	2019-04-11 12:03:04 -05:00
David Teigland	990c824c21	add flags to keep track of bad metadata When reading metadata headers and text, use a new set of flags to identify specific errors that are seen. These will be used for more advanced repair in a subsequent commit.	2019-04-11 12:03:04 -05:00
David Teigland	4eff1da46f	separate code for setting devices from metadata parsing Pull the code that sets devs for PVs out of the metadata parsing code and call it separately.	2019-04-11 12:03:04 -05:00