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David Teigland 7578a30534 pvscan: add options listlvs listvg checkcomplete
pvscan --cache <dev>
    . read only dev
    . create online file for dev

pvscan --listvg <dev>
    . read only dev
    . list VG using dev

pvscan --listlvs <dev>
    . read only dev
    . list VG using dev
    . list LVs using dev

pvscan --cache --listvg [--checkcomplete] <dev>
    . read only dev
    . create online file for dev
    . list VG using dev
    . [check online files and report if VG is complete]

pvscan --cache --listlvs [--checkcomplete] <dev>
    . read only dev
    . create online file for dev
    . list VG using dev
    . list LVs using dev
    . [check online files and report if VG is complete]
    . [check online files and report if LVs are complete]

[--vgonline]
can be used with --checkcomplete, to enable use of a vg online
file.  This results in only the first pvscan command to see
the complete VG to report 'VG complete', and others will report
'VG finished'.  This allows the caller to easily run a single
activation of the VG.

[--udevoutput]
can be used with --cache --listvg --checkcomplete, to enable
an output mode that prints LVM_VG_NAME_COMPLETE='vgname' that
a udev rule can import, and prevents other output from the
command (other output causes udev to ignore the command.)

The list of complete LVs is meant to be passed to lvchange -aay,
or the complete VG used with vgchange -aay.

When --checkcomplete is used, lvm assumes that that the output
will be used to trigger event-based autoactivation, so the pvscan
does nothing if event_activation=0 and --checkcomplete is used.

Example of listlvs
------------------

$ lvs -a vg -olvname,devices
  LV     Devices
  lv_a   /dev/loop0(0)
  lv_ab  /dev/loop0(1),/dev/loop1(1)
  lv_abc /dev/loop0(3),/dev/loop1(3),/dev/loop2(1)
  lv_b   /dev/loop1(0)
  lv_c   /dev/loop2(0)

$ pvscan --cache --listlvs --checkcomplete /dev/loop0
  pvscan[35680] PV /dev/loop0 online, VG vg incomplete (need 2).
  VG vg incomplete
  LV vg/lv_a complete
  LV vg/lv_ab incomplete
  LV vg/lv_abc incomplete

$ pvscan --cache --listlvs --checkcomplete /dev/loop1
  pvscan[35681] PV /dev/loop1 online, VG vg incomplete (need 1).
  VG vg incomplete
  LV vg/lv_b complete
  LV vg/lv_ab complete
  LV vg/lv_abc incomplete

$ pvscan --cache --listlvs --checkcomplete /dev/loop2
  pvscan[35682] PV /dev/loop2 online, VG vg is complete.
  VG vg complete
  LV vg/lv_c complete
  LV vg/lv_abc complete

Example of listvg
-----------------

$ pvscan --cache --listvg --checkcomplete /dev/loop0
  pvscan[35684] PV /dev/loop0 online, VG vg incomplete (need 2).
  VG vg incomplete

$ pvscan --cache --listvg --checkcomplete /dev/loop1
  pvscan[35685] PV /dev/loop1 online, VG vg incomplete (need 1).
  VG vg incomplete

$ pvscan --cache --listvg --checkcomplete /dev/loop2
  pvscan[35686] PV /dev/loop2 online, VG vg is complete.
  VG vg complete
2021-07-14 12:51:59 -05:00
autoconf autoconf: Fix py-compile permissions 2016-02-18 01:05:05 +00:00
base hash: replace hash with better function 2021-03-08 15:33:15 +01:00
conf vdo: support vdo_pool_header_size 2021-06-28 20:41:07 +02:00
coverity cov: drop model for origin_from_cow 2020-09-12 13:23:49 +02:00
daemons lvmdbusd: Wrap json.load in try/except 2021-06-17 09:14:29 -05:00
device_mapper clang: always initialized values 2021-04-23 23:00:55 +02:00
doc all: fix typos 2021-03-30 13:08:14 +02:00
include vdo: add vdoimport support 2021-07-09 14:57:59 +02:00
lib pvscan: add options listlvs listvg checkcomplete 2021-07-14 12:51:59 -05:00
libdaemon daemon-server: handle reaping threads better 2021-04-06 21:26:57 +02:00
libdm clang: always initialized values 2021-04-23 23:00:55 +02:00
man system_id: new appmachineid option 2021-07-14 11:28:11 -05:00
nix lockd: Clean up spec 2015-07-04 14:36:57 +02:00
po makefiles: fix pofile generation 2021-03-02 22:54:40 +01:00
scripts vdo: add vdoimport support 2021-07-09 14:57:59 +02:00
spec vdo: add vdoimport support 2021-07-09 14:57:59 +02:00
test system_id: new appmachineid option 2021-07-14 11:28:11 -05:00
tools pvscan: add options listlvs listvg checkcomplete 2021-07-14 12:51:59 -05:00
udev udev rule: remove lvmetad comments 2020-11-25 16:57:54 -06:00
.gitignore git: update .gitignore 2021-03-19 23:21:18 +01:00
acinclude.m4 [build] uncomment 'serial 3' in an m4 file. 2018-04-30 09:44:27 +01:00
aclocal.m4 configure: update 2020-12-11 12:16:16 +01:00
configure vdo: add vdoimport support 2021-07-09 14:57:59 +02:00
configure.ac system_id: new appmachineid option 2021-07-14 11:28:11 -05:00
COPYING doc: change fsf address 2016-01-21 12:11:37 +01:00
COPYING.BSD Add BSD 2-Clause License 2018-07-27 17:09:46 +02:00
COPYING.LIB Fix inconsistent licence notices: executables are GPLv2; libraries LGPLv2.1. 2007-08-20 20:55:30 +00:00
INSTALL quick review of docs 2008-11-04 17:49:22 +00:00
make.tmpl.in makefiles: add devmapper for devmapper-event 2021-04-12 10:35:55 +02:00
Makefile.in makefiles: reuse CSCOPE_DIRS for ctags 2021-04-12 09:54:16 +02:00
README Update README 2020-08-12 12:05:36 +02:00
TESTING docs: Add TESTING file 2017-12-14 16:45:47 +01:00
VERSION post-release 2021-05-07 23:09:15 +02:00
VERSION_DM post-release 2021-05-07 23:09:15 +02:00
WHATS_NEW thin: fix component detection of external origin 2021-07-14 12:56:08 +02:00
WHATS_NEW_DM post-release 2021-05-07 23:09:15 +02:00

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.

For more information about LVM2 read the changelog in the WHATS_NEW file.
Installation instructions are in INSTALL.

There is no warranty - see COPYING and COPYING.LIB.

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

The source code is stored in git:
  https://sourceware.org/git/?p=lvm2.git
  git clone git://sourceware.org/git/lvm2.git
mirrored to:
  https://github.com/lvmteam/lvm2
  git clone https://github.com/lvmteam/lvm2.git
  git clone git@github.com:lvmteam/lvm2.git

Mailing list for general discussion related to LVM2:
  linux-lvm@redhat.com
  Subscribe from https://www.redhat.com/mailman/listinfo/linux-lvm

Mailing lists for LVM2 development, patches and commits:
  lvm-devel@redhat.com
  Subscribe from https://www.redhat.com/mailman/listinfo/lvm-devel

  lvm2-commits@lists.fedorahosted.org (Read-only archive of commits)
  Subscribe from https://fedorahosted.org/mailman/listinfo/lvm2-commits

Mailing list for device-mapper development, including kernel patches
and multipath-tools:
  dm-devel@redhat.com
  Subscribe from https://www.redhat.com/mailman/listinfo/dm-devel

Website:
  https://sourceware.org/lvm2/

Report upstream bugs at:
  https://bugzilla.redhat.com/enter_bug.cgi?product=LVM%20and%20device-mapper
or open issues at:
  https://github.com/lvmteam/lvm2/issues

The source code repository used until 7th June 2012 is accessible using CVS:

  cvs -d :pserver:cvs@sourceware.org:/cvs/lvm2 login cvs
  cvs -d :pserver:cvs@sourceware.org:/cvs/lvm2 checkout LVM2

The password is cvs.