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737 lines
30 KiB
Plaintext
737 lines
30 KiB
Plaintext
Version 2.02.09 -
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==================================
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Add lvm_getpagesize wrapper.
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Add --maxphysicalvolumes to vgchange.
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Version 2.02.08 - 15th August 2006
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==================================
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Add checks for duplicate LV name, lvid and PV id before writing metadata.
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Report all sanity check failures, not just the first.
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Fix missing lockfs on first snapshot creation.
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Add unreliable --trustcache option to reporting commands.
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Fix locking for mimage removal.
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Fix clvmd_init_rhel4 'status' exit code.
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Version 2.02.07 - 17th July 2006
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================================
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Fix activation logic in lvchange --persistent.
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Don't ignore persistent minor numbers when activating.
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Use RTLD_GLOBAL when loading shared libraries.
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Add some forgotten memlock checks to _vg_read to protect against full scans.
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Add mutex to dmeventd_mirror to avoid concurrent execution.
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Fix vgreduce --removemissing to return success if VG is already consistent.
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Fix return code if VG specified on command line is not found.
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Fix PV tools to include orphaned PVs in default output again.
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Fixed unaligned access when using clvm.
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Fix an extra dev_close in a label_read error path.
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Append patches to commit emails.
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Fix target_register_events args.
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Prevent snapshots of mirrors.
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Add DISTCLEAN_TARGETS to make template for configure.h.
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More fixes to error paths.
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Fix lvcreate corelog validation.
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Add --config for overriding most config file settings from cmdline.
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Quote arguments when printing command line.
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Remove linefeed from 'initialising logging' message.
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Add 'Completed' debug message.
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Don't attempt library exit after reloading config files.
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Always compile with libdevmapper, even if device-mapper is disabled.
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Version 2.02.06 - 12th May 2006
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===============================
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Propagate --monitor around cluster.
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Add --monitor to vgcreate and lvcreate to control dmeventd registration.
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Filter LCK_NONBLOCK in clvmd lock_vg.
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Add --nosync to lvcreate with LV flag NOTSYNCED.
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Use mirror's uuid for a core log.
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Add mirror log fault-handling policy.
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Improve mirror warning messages and tidy dmeventd syslog output.
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Propagate nosync flag around cluster.
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Allow vgreduce to handle mirror log failures.
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Add --corelog to lvcreate and lvconvert.
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Create a log header for replacement in-sync mirror log.
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Use set_lv() and dev_set() to wipe sections of devices.
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Add mirror_in_sync() flag to avoid unnecessary resync on activation.
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Add mirror_library description to example.conf.
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Fix uuid_from_num() buffer overrun.
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Make SIZE_SHORT the default for display_size().
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Fix some memory leaks in error paths found by coverity.
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Use C99 struct initialisers.
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Move DEFS into configure.h.
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Clean-ups to remove miscellaneous compiler warnings.
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Improve stripe size validation.
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Increase maximum stripe size limit to physical extent size for lvm2 metadata.
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Fix activation code to check for pre-existing mirror logs.
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Tighten region size validation.
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Ignore empty strings in config files.
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Require non-zero regionsize and document parameter on lvcreate man page.
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Invalidate cache if composition of VG changed externally.
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Version 2.02.05 - 21st April 2006
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=================================
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Fix vgid string termination in recent cache code.
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Version 2.02.04 - 19th April 2006
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=================================
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Check for libsepol.
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Add some cflow & scope support.
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Separate out DEFS from CFLAGS.
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Remove inlines and use unique function names.
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Version 2.02.03 - 14th April 2006
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=================================
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vgrename accepts vgid and exported VG.
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Add --partial to pvs.
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When choosing between identically-named VGs, also consider creation_host.
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Provide total log suppression with 2.
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Fix vgexport/vgimport to set/reset PV exported flag so pv_attr is correct.
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Add vgid to struct physical_volume and pass with vg_name to some functions.
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If two or more VGs are found with the same name, use one that is not exported.
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Whenever vgname is captured, also capture vgid and whether exported.
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Remove an incorrect unlock_vg() from process_each_lv().
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Update extent size information in vgchange and vgcreate man pages.
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Introduce origin_from_cow() and lv_is_visible().
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pvremove without -f now fails if there's no PV label.
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Support lvconvert -s.
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Suppress locking library load failure message if --ignorelockingfailure.
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Propagate partial mode around cluster.
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Fix archive file expiration.
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Fix dmeventd build.
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clvmd now uses libcman rather than cman ioctls.
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clvmd will allow new cman to shutdown on request.
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Version 2.02.02 - 7th February 2006
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===================================
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Add %.so: %.a make template rule.
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Switchover library building to use LIB_SUFFIX.
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Only do lockfs filesystem sync when suspending snapshots.
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Always print warning if activation is disabled.
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vgreduce removes mirror images.
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Add --mirrorsonly to vgreduce.
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vgreduce replaces active LVs with error segment before removing them.
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Set block_on_error parameter if available.
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Add target_version.
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Add details to format1 'Invalid LV in extent map' error message.
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Fix lvscan snapshot full display.
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Bring lvdisplay man page example into line.
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Add mirror dmeventd library.
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Add some activation logic to remove_mirror_images().
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lvconvert can remove specified PVs from a mirror.
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lvconvert turns an existing LV into a mirror.
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Allow signed mirrors arguments.
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Move create_mirror_log() into toollib.
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Determine parallel PVs to avoid with ALLOC_NORMAL allocation.
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Fix lv_empty.
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Version 2.02.01 - 23rd November 2005
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====================================
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Fix lvdisplay cmdline to accept snapshots.
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Fix open RO->RW promotion.
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Fix missing vg_revert in lvcreate error path.
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Version 2.02.00 - 10th November 2005
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====================================
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Extend allocation areas to avoid overflow with contiguous with other PVs.
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Stop lvcreate attempting to wipe zero or error segments.
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Added new lvs table attributes.
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Separated out activation preload.
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Moved activation functions into libdevmapper.
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Fixed build_dm_name.
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Add return macros.
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Added xen xvd devices.
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Clear up precommitted metadata better.
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A pvresize implementation.
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Fix contiguous allocation when there are no preceding segments.
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Add mirror_seg pointer to lv_segment struct.
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Only keep a device open if it's known to belong to a locked VG.
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Fix lvdisplay to show all mirror destinations.
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Replacement suspend code using libdevmapper dependency tree.
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Add DEFS to make.tmpl.
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Use dm_is_dm_major instead of local copy.
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Allow mapped devices to be used as PVs.
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Move set_selinux_context into libdevmapper.
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Fix automatic text metadata buffer expansion (using macro).
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Cache formatted text metadata buffer between metadata area writes.
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Add pe_start field to pvs.
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Add 'LVM-' prefix to uuids.
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Split lv_segment_area from lv_segment to permit extension.
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Replacement deactivation code using libdevmapper dependency tree.
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Simplify dev_manager_info().
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Attempt to load missing targets using modprobe.
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Add -a to lvscan.
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Move mknodes into libdevmapper.
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Move bitset, hash, pool and dbg_malloc into libdevmapper.
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Version 2.01.15 - 16th October 2005
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===================================
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Refuse to run pvcreate/pvremove on devices we can't open exclusively.
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Use ORPHAN lock definition throughout.
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Validate chunksize in lvcreate.
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Reduce chunksize limit to 512k.
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Fix chunksize field in reports.
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Don't hide snapshots from default 'lvs' output.
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Add is_dm_major() for use in duplicate device detection in lvmcache_add().
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Really switch device number in lvmcache when it says it is doing so.
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Option for bitset memory allocation using malloc as well as pool.
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Don't assume exactly two mirrors when parsing mirror status.
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Suppress fsync() error message on filesystems that don't support it.
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Fix yes_no_prompt() error handling.
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Add lvm.conf comment warning against multiple filter lines.
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Tidy lvmconf.sh.
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Add format1 dev_write debug messages.
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Add clustered VG attribute to report.
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Move lvconvert parameters into struct lvconvert_params.
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Add clustered VG flag to LV lock requests.
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Change LV locking macros to take lv instead of lvid.
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Prepend 'cluster' activation parameter to mirror log when appropriate.
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Pass exclusive flag to lv_activate and on to target activation code.
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Prevent snapshot creation in a clustered VG for now.
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Factor out adjusted_mirror_region_size() and generate_log_name_format().
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Move compose_log_line() into mirror directory.
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Factor out _get_library_path().
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Don't kill idling clvmd threads.
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clvmd no longer takes out locks for non-clustered LVs.
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Recognise ATA over Ethernet (aoe) devices.
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Version 2.01.14 - 4th August 2005
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=================================
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Fix lvconvert PV parameter in help string.
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Prevent snapshots getting activated in a clustered VG.
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Separate out _build_dev_string.
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Move zero_lv to toollib.
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Fix pool format handler to work with pv segment code.
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Version 2.01.13 - 13th July 2005
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================================
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Fix pvmove segment splitting.
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Abstract vg_validate.
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Only make one attempt at contiguous allocation.
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Fix lvm1 format metadata read.
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Fix lvm1 format non-mirror lvcreate.
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Version 2.01.12 - 14th June 2005
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================================
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Various allocation-related pvmove fixes.
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Log an error if clvmd can't resolve a host name got from CCS.
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Fix potential spin loop in clvmd.
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Version 2.01.11 - 13th June 2005
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================================
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Added lvmconf.sh.
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Use matchpathcon mode parameter.
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Don't defer closing dead FDs in clvmd.
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Remove hard-coded 64k text metadata writing restriction.
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Make VG name restrictions consistent.
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Introduce lvconvert. So far only removes mirror images.
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Allow mirror images to be resized.
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Allow mirror images to have more than one segment.
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Centralise restrictions on LV names.
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Always insert an intermediate layer for mirrors.
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Suppress hidden LVs from reports unless --all is given.
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Use square brackets for hidden LVs in reports.
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Allow the creation of mirrors with contiguous extents.
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Always perform sanity checks against metadata before committing it to disk.
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Split lv_extend into two steps: choosing extents + allocation to LV(s).
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Add mirror log region size to metadata.
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Use list_iterate_items throughout and add list*back macros.
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Introduce seg_ macros to access areas.
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Add segtype_is_ macros.
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Support tiny metadata areas for pool conversions.
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Mirror activation handles disk log as well as core.
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Activation code recognises mirror log dependency.
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Add mirror_log and regionsize fields to report.
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Fix non-orphan pvchange -u.
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Fix vgmerge to handle duplicate LVIDs.
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Move archiver code from tools into library.
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vgscan/change/display/vgs automatically create metadata backups if needed.
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Merge cloned allocation functions.
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Fix contiguous allocation policy with linear.
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Cope with missing format1 PVs again.
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Remove lists of free PV segments.
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Simplify pv_maps code and remove slow bitset algorithm.
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Red-Hat-ify the clvmd rhel4 initscript.
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%Zu->%zu
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Fix loopfiles alias alloc & mem debugging.
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Un-inline dbg_strdup.
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lv_reduce tidying.
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Remove some unnecessary parameters.
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Introduce seg_is macros.
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Version 2.01.10 - 3rd May 2005
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==============================
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Don't create backup and archive dirs till needed.
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Reinstate full PV size when removing from VG.
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Support loopfiles for testing.
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Tidy lv_segment interface.
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pv_segment support.
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vgchange --physicalextentsize
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Internal snapshot restructuring.
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Remove unused internal non-persistent snapshot option.
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Allow offline extension of snapshot volumes.
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Move from 2-step to 3-step on-disk metadata commit.
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Scan ramdisks too and allow non-O_DIRECT fallback.
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Annotate, tidy and extend list.h.
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Alignment tidying.
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Make clvmd work around some "bugs" in gulm's node state notifications.
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Tidy clvmd's SIGHUP handler
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Version 2.01.09 - 4th April 2005
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================================
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Add --ignorelockingfailure to vgmknodes.
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clvmd: Don't allow user operations to start until the lvm thread is fully up.
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clvmd-gulm: set KEEPALIVE on sockets.
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Version 2.01.08 - 22nd March 2005
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=================================
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Add clustered attribute so vgchange can identify clustered VGs w/o locking.
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Improve detection of external changes affecting internal cache.
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Add 'already in device cache' debug message.
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Add -a to pvdisplay -C.
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Avoid rmdir opendir error messsages when dir was already removed.
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Tighten signal handlers.
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Avoid some compiler warnings.
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Additional rename failure error message.
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read/write may be macros.
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clvmd: don't take out lvm thread lock at startup, it only protects jobs list.
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Version 2.01.07 - 8th March 2005
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================================
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Cope with new devices appearing by rescanning /dev if a uuid can't be found.
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Remove DESTDIR from LVM_SHARED_PATH.
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clvmd fixes: make FDs close-on-exec
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gulm unlocks VG & orphan locks at startup in case they are stale
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gulm now unlocks VG & orphan locks if client dies.
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Version 2.01.06 - 1st March 2005
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================================
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Suppress 'open failed' error messages during scanning.
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Option to suppress warnings of file descriptors left open.
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Fix default value of metadatacopies in documentation (2->1).
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Fix clvmd-gulm locking.
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./configure --enable-debug now enables debugging code in clvmd.
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Fix clvmd-gulm node up/down code so it actually works.
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clvmd-gulm now releases locks when shut down.
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Version 2.01.05 - 18th February 2005
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====================================
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Static binary invokes dynamic binary if appropriate.
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Make clvmd config check a little more tolerant.
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gulm clvmd can now cope with >1 message arriving in a TCP message.
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Version 2.01.04 - 9th February 2005
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===================================
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Add fixed offset to imported pool minor numbers.
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Update binary pathnames in clvmd_init_rhel4.
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lvm2cmd.so should skip the check for open fds.
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Remove unused -f from pvmove.
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Gulm clvmd doesn't report "connection refused" errors.
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clvmd does a basic config file sanity check at startup.
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Fix potential thread shutdown race in clvmd.
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Version 2.01.03 - 1st February 2005
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===================================
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More 64-bit display/report fixes.
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More informative startup mesg if can't create /etc/lvm.
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Fix snapshot device size bug (since 2.01.01).
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clvmd announces startup and cluster connection in syslog.
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Gulm clvmd doesn't hang trying to talk to a rebooted node.
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Gulm clvmd doesn't print cman error on startup.
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Version 2.01.02 - 21st January 2005
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===================================
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Update clvmd_init_rhel4: use lvm.static and don't load dlm.
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Fix some size_t printing.
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Fix 64 bit xlate consts.
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Split out pool sptype_names to avoid unused const.
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Always fail if random id generation fails.
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Recognise gnbd devices.
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Fix clvmd startup bug introduced in cman/gulm amalgamation.
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Improve reporting of node-specific locking errors.
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Version 2.01.01 - 19th January 2005
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===================================
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Fix clvmd lv_info_by_lvid open_count.
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Store snapshot and origin sizes separately.
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Update vgcreate man page.
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Version 2.01.00 - 17th January 2005
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===================================
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Fix vgscan metadata auto-correction.
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Only ask libdevmapper for open_count when we need it.
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Adjust RHEL4 clvmd init script priority.
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Enable building of CMAN & GULM versions of clvmd into a single binary
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Version 2.00.33 - 7th January 2005
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==================================
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pvcreate wipes first 4 sectors unless given --zero n.
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gulm clvmd now uses new ccsd key names.
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gulm clvmd now doesn't ignore the first node in cluster.conf
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Improve clvmd failure message if it's already running.
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Allow user to kill clvmd during initialisation.
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Fix off-by-one error in cluster_locking that could cause read hangs.
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Version 2.00.32 - 22nd December 2004
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====================================
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Drop static/dl restriction for now.
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Fix an error fprintf.
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Fix vgdisplay -s. Breaks (undocumented) lvs/pvs/vgs -s instead for now.
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Fix device reference counting on re-opens.
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Ignore sysfs symlinks when DT_UNKNOWN.
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Add clvmd init script for RHEL4.
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Skip devices that are too small to be PVs.
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Fix pvchange -x segfault with lvm2-format orphan.
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Cope with empty msdos partition tables.
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Add CONTRIBUTORS file.
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Version 2.00.31 - 12th December 2004
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====================================
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Reopen RO file descriptors RW if necessary.
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Version 2.00.30 - 10th December 2004
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====================================
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Additional device-handling debug messages.
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Additional verbosity level -vvvv includes line numbers and backtraces.
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Verbose messages now go to stderr not stdout.
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Close any stray file descriptors before starting.
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Refine partitionable checks for certain device types.
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Allow devices/types to override built-ins.
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Fix lvreduce man page .i->.I
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Fix vgsplit man page title.
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Fix clvmd man makefile.
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Extend dev_open logging.
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Make clvmd_fix_conf.sh UNDOable.
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Version 2.00.29 - 27th November 2004
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====================================
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xlate compilation fix.
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Version 2.00.28 - 27th November 2004
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====================================
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Fix partition table & md signature detection.
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Minor configure/makefile tidy.
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Export version.h from tools for clvmd.
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Version 2.00.27 - 24th November 2004
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====================================
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Trap large memory allocation requests.
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Fix to partition table detection code.
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Improve filter debug mesgs.
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Make clvmd_fix_conf.sh UNDOable
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Version 2.00.26 - 23rd November 2004
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====================================
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Improve pool debugging stats.
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Detect partition table signature.
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pvcreate wipes md superblocks. (With --uuid or --restorefile it prompts.)
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Separate out md superblock detection code.
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Prevent snapshot origin resizing.
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Improve a vgremove error message.
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Update some man pages.
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Allow y/n with -ae args (exclusive activation).
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Fixes to lvcreate vgname parsing.
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Fix dm_name string size calculation.
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Improve clvmd error reporting during startup.
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Make clvmd cope with large gaps in node numbers IDs.
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Make clvmd initialisation cope better with debugging output.
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Tidy clvmd socket callbacks so all work happens outside main loop.
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clvmd -V now displays lvm version too.
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Add optional gulm build for clvmd
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Version 2.00.25 - 29th September 2004
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=====================================
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Fix return code from rm_link for vgmknodes.
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Make clvmd LV hash table thread-safe.
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Fix clvmd locking so it will lock out multiple users on the same node.
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Fix clvmd VG locking to it can cope with multiple VG locks.
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Remove spurious trailing dot in lvreduce man page.
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Fix vgremove locking.
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Version 2.00.24 - 16th September 2004
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=====================================
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Fix pool_empty so it really does empty the memory pool.
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Rename old segtypes files to segtype.
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Some fixes to memory debugging code.
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Exclude internal commands formats & segtypes from install.
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Version 2.00.23 - 15th September 2004
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=====================================
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Export dm name build & split functions.
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Use O_NOATIME on devices if available.
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Write log message when each segtype/format gets initialised.
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New commands 'segtypes' and 'formats'.
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Suppress pvmove abort message in test mode.
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Improve pvcreate/remove device not found error message.
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Allow pvmove to move data within the same PV.
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Describe how pvmove works on man page.
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Test for incompatible format/segtype combinations in lv_extend.
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Fix lvchange example on man page.
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Version 2.00.22 - 3rd September 2004
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====================================
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Fix /dev/vgname perms.
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Restructure xlate.h.
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Add clvmd man page.
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Version 2.00.21 - 19th August 2004
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==================================
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Update cnxman-socket.h from cman.
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Recognise iseries/vd devices.
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Use 'make install_cluster' to install cluster extensions only.
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Cope with DT_UNKNOWN in sysfs.
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Fix extents_moved metadata size comment.
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Remove duplicate line in pvremove help text.
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Support variable mirror region size.
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Support PE ranges in pvmove source PV.
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Fixes to as-yet-unused LV segment splitting code.
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Change alloc_areas to pe_ranges and allow suppression of availability checks.
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Add dev_size column to pvs.
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Add report columns for in-kernel device number.
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Version 2.00.20 - 3 July 2004
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=============================
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More autoconf fixes.
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Fix device number handling for 2.6 kernels.
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Version 2.00.19 - 29 June 2004
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==============================
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Reduce severity of setlocale failure message.
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Recognise argv[0] "initrd-lvm" (pld-linux).
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Make -O2 configurable.
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Added --disable-selinux to configure script.
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LD_FLAGS->LDFLAGS & LD_DEPS->LDDEPS in configure script.
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Add init_debug to clvmd.
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Version 2.00.18 - 24 June 2004
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|
==============================
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Fix vgchange activation.
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Add cluster support.
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Version 2.00.17 - 20 June 2004
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==============================
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configure --enable-fsadm to try out fsadm. fsadm is not tested yet.
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Display all filtered devices, not just PVs, with pvs -a.
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Fix sync_dir() when no / in filename
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vgcfgbackup -f accepts template with %s for VG name.
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Extend hash functions to handle non-null-terminated data.
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Add local activation support.
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Tidy relative paths in makefile includes.
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fsadm support for fsck and resizing - needs testing.
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Add read-only GFS pool support.
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Add lvm2create_initrd script from http://poochiereds.net/svn/lvm2/
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Fix rounding of large diplayed sizes.
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Suppress decimal point when using units of sectors/bytes.
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Additional kernel target checks before pvmove & snapshot creation.
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Add i2o_block.
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Version 2.00.16 - 24 May 2004
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=============================
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Set area_count within alloc_lv_segment.
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Remove error labels from lvresize.
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Fix a pvs error path.
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xxchange -ae for exclusive activation.
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Don't return non-zero status if there aren't any volume groups.
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Add --alloc argument to tools.
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Rename allocation policies to contiguous, normal, anywhere, inherit.
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nextfree becomes normal; anywhere isn't implemented yet.
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LV inherits allocation policy from VG. Defaults: LV - inherit; VG - normal
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Additional status character added to vgs to indicate allocation policy.
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Add reset_fn to external_locking.
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Ensure presence of virtual targets before attempting activating.
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Attempt to fix resizing of snapshot origins.
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Restructure lvresize, bringing it closer to lvcreate.
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A quick sanity check on vg_disk struct when read in. More checks needed.
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Only include visible LVs in active/open counts.
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Add virtual segment types, zero and error. A large sparse device can be
|
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constructed as a writeable snapshot of a large zero segment.
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Add --type to lvcreate/resize.
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Push lv_create & alloc policy up to tool level.
|
|
Fix pvdisplay return code.
|
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Detect invalid LV names in arg lists.
|
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Reporting uses line-at-a-time output.
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|
lvm2 format sets unlimited_vols format flag.
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Internal-only metadata flag support.
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Basic checking for presence of device-mapper targets.
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Separate out polldaemon.
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Revise internal locking semantics.
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Move find_pv_by_name to library.
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Rename move->copy.
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Add devices to segments report.
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Begin separating out segment code. There's a lot of change here.
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Compress any (obsolete) long LVM1 pvids encountered.
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Support for tagged config files.
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Don't abort operations if selinux present but disabled.
|
|
Fix typo in configure which left HAVE_LIBDL unset.
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|
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Version 2.00.15 - 19 Apr 2004
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|
=============================
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configure --with-owner= --with-group= to avoid -o and -g args to 'install'
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|
Version 2.00.14 - 16 Apr 2004
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|
=============================
|
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Use 64-bit file functions by default.
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|
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Version 2.00.13 - 16 Apr 2004
|
|
=============================
|
|
Set devices/md_component_detection = 1 to ignore devices containing md
|
|
superblocks. [Luca Berra]
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|
Ignore error setting selinux file context if fs doesn't support it.
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|
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Version 2.00.12 - 14 Apr 2004
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=============================
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Install a default lvm.conf into /etc/lvm if there isn't one already.
|
|
Allow different installation dir for lvm.static (configure --staticdir=)
|
|
Fix inverted selinux error check.
|
|
Recognise power2 in /proc/devices.
|
|
Fix counting in lvs_in_vg_opened. [It ignored devices open more than once.]
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Version 2.00.11 - 8 Apr 2004
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|
============================
|
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Set fallback_to_lvm1 in lvm.conf (or configure --enable-lvm1_fallback)
|
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to run lvm1 binaries if running a 2.4 kernel without device-mapper.
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Version 2.00.10 - 7 Apr 2004
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============================
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More fixes for static build.
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Add basic selinux support.
|
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Fix sysfs detection.
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Version 2.00.09 - 31 Mar 2004
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=============================
|
|
Update copyright notices for Red Hat.
|
|
Fix vgmknodes to remove dud /dev/mapper entries. (libdevmapper update reqd).
|
|
Add LVM1-style colon output to vgdisplay.
|
|
lvchange --refresh to reload active LVs.
|
|
Add string display to memory leak dump.
|
|
Add locking flags & memlock option.
|
|
Add list_versions to library.
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|
Ignore open hidden LVs when checking if deactivation is OK.
|
|
Suppress move percentage when device inactive.
|
|
Add lv_info_by_lvid.
|
|
Various tidy-ups to the build process.
|
|
Rebaseline internal verbose level.
|
|
Add --nolocking option for read operations if locking is failing.
|
|
Add option to compile into a library.
|
|
When compiled without libdevmapper, only print warning message once.
|
|
Fix lvreduce PV extent calculations.
|
|
Fix DESTDIR to work with configure path overrides.
|
|
Always use / as config file separator & rename internal config file variables.
|
|
Add support for tagging PV/VG/LVs and hosts.
|
|
Fix rare bug in recognition of long cmdline argument forms.
|
|
Add basic internationalisation infrastructure.
|
|
Don't recurse symlinked dirs such as /dev/fd on 2.6 kernels.
|
|
Update autoconf files.
|
|
Add sysfs block device filtering for 2.6 kernels.
|
|
Update refs for move to sources.redhat.com.
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|
|
|
Friday 14th November 2003
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|
=========================
|
|
Some bug fixes & minor enhancements, including:
|
|
Backwards compatibility with LVM1 metadata improved.
|
|
Missing man pages written.
|
|
Tool error codes made more consistent.
|
|
vgmknodes written.
|
|
O_DIRECT can be turned off if it doesn't work in your kernel.
|
|
dumpconfig to display the active configuration file
|
|
|
|
You need to update libdevmapper before using 'vgmknodes' or 'vgscan --mknodes'.
|
|
If your root filesystem is on an LV, you should run one of those two
|
|
commands to fix up the special files in /dev in your real root filesystem
|
|
after finishing with your initrd. Also, remember you can use
|
|
'vgchange --ignorelockingfailure' on your initrd if the tool fails because
|
|
it can't write a lock file to a read-only filesystem.
|
|
|
|
Wednesday 30th April 2003
|
|
=========================
|
|
A pvmove implementation is now available for the new metadata format.
|
|
|
|
When running a command that allocates space (e.g. lvcreate), you can now
|
|
restrict not only which disk(s) may be used but also the Physical Extents
|
|
on those disks. e.g. lvcreate -L 10 vg1 /dev/hda6:1000-2000:3000-4000
|
|
|
|
|
|
Monday 18th November 2002
|
|
========================
|
|
|
|
The new format of LVM metadata is ready for you to test!
|
|
We expect it to be more efficient and more robust than the original format.
|
|
It's more compact and supports transactional changes and replication.
|
|
Should things go wrong on a system, it's human-readable (and editable).
|
|
|
|
Please report any problems you find to the mailing list,
|
|
linux-lvm@sistina.com. The software has NOT yet been thoroughly
|
|
tested and so quite possibly there'll still be some bugs in it.
|
|
Be aware of the disclaimer in the COPYING file.
|
|
|
|
While testing, we recommend turning logging on in the configuration file
|
|
to provide us with diagnostic information:
|
|
log {
|
|
file="/tmp/lvm2.log"
|
|
level=7
|
|
activation=1
|
|
}
|
|
|
|
You should schedule regular backups of your configuration file and
|
|
metadata backups and archives (normally kept under /etc/lvm).
|
|
|
|
Please read docs/example.conf and "man lvm.conf" to find out more about
|
|
the configuration file.
|
|
|
|
To convert an existing volume group called vg1 to the new format using
|
|
the default settings, use "vgconvert -M2 vg1". See "man vgconvert".
|
|
|
|
-M (or --metadatatype in its long form) is a new flag to indicate which
|
|
format of metadata the command should use for anything it creates.
|
|
Currently, the valid types are "lvm1" and "lvm2" and they can be
|
|
abbreviated to "1" and "2" respectively. The default value for this
|
|
flag can be changed in the global section in the config file.
|
|
|
|
Backwards-compatible support for the original LVM1 metadata format is
|
|
maintained, but it can be moved into a shared library or removed
|
|
completely with configure's --with-lvm1 option.
|
|
|
|
Under LVM2, the basic unit of metadata is the volume group. Different
|
|
volume groups can use different formats of metadata - vg1 could use
|
|
the original LVM1 format while vg2 used the new format - but you can't
|
|
mix formats within a volume group. So to add a PV to an LVM2-format
|
|
volume group you must run "pvcreate -M2" on it, followed by "vgextend".
|
|
|
|
With LVM2-format metadata, lvextend will let you specify striping
|
|
parameters. So an LV could consist of two or more "segments" - the
|
|
first segment could have 3 stripes while the second segment has just 2.
|
|
|
|
LVM2 maintains a backup of the current metadata for each volume group
|
|
in /etc/lvm/backup, and puts copies of previous versions in
|
|
/etc/lvm/archive. "vgcfgbackup" and "vgcfgrestore" can be used to
|
|
create and restore from these files. If you fully understand what
|
|
you're doing, metadata can be changed by editing a copy of a current
|
|
backup file and using vgcfgrestore to reload it.
|
|
|
|
Please read the pvcreate man page for more information on the new
|
|
format for metadata.
|
|
|
|
All tools that can change things have a --test flag which can be used
|
|
to check the effect of a set of cmdline args without really making the
|
|
changes.
|
|
|
|
|
|
What's not finished?
|
|
====================
|
|
The internal cache. If you turn on debugging output you'll see lots of
|
|
repeated messages, many of which will eventually get optimised out.
|
|
|
|
--test sometimes causes a command to fail (e.g. vgconvert --test) even
|
|
though the real command would work: again, fixing this is waiting for
|
|
the work on the cache.
|
|
|
|
Several of the tools do not yet contain the logic to handle full
|
|
recovery: combinations of pvcreate and vgcfgrestore may sometimes be
|
|
needed to restore metadata if a tool gets interrupted or crashes or
|
|
finds something unexpected. This applies particularly to tools that
|
|
work on more than one volume group at once (e.g. vgsplit).
|
|
|
|
Display output. Some metadata information cannot yet be displayed.
|
|
|
|
Recovery tools to salvage "lost" metadata directly from the disks:
|
|
but we hope the new format will mean such tools are hardly ever needed!
|
|
|