On Apache
Under GNU General Public License
2025-11-21 18:03 @216.73.216.164 CrawledBy Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
VGREDUCE(8) System Manager's Manual VGREDUCE(8)
NAME
vgreduce - Remove physical volume(s) from a volume group
SYNOPSIS
vgreduce option_args position_args
[ option_args ]
-a|--all
-A|--autobackup y|n
--commandprofile String
--config String
-d|--debug
--driverloaded y|n
-f|--force
-h|--help
--lockopt String
--longhelp
--mirrorsonly
--nolocking
--profile String
-q|--quiet
--removemissing
--reportformat basic|json
-t|--test
-v|--verbose
--version
-y|--yes
DESCRIPTION
vgreduce removes one or more unused PVs from a VG.
USAGE
Remove a PV from a VG.
vgreduce VG PV ...
[ COMMON_OPTIONS ]
-
Remove all unused PVs from a VG.
vgreduce -a|--all VG
[ COMMON_OPTIONS ]
-
Remove all missing PVs from a VG.
vgreduce --removemissing VG
[ --mirrorsonly ]
[ COMMON_OPTIONS ]
-
Common options for command:
[ -A|--autobackup y|n ]
[ -f|--force ]
[ --reportformat basic|json ]
Common options for lvm:
[ -d|--debug ]
[ -h|--help ]
[ -q|--quiet ]
[ -t|--test ]
[ -v|--verbose ]
[ -y|--yes ]
[ --commandprofile String ]
[ --config String ]
[ --driverloaded y|n ]
[ --lockopt String ]
[ --longhelp ]
[ --nolocking ]
[ --profile String ]
[ --version ]
OPTIONS
-a|--all
Removes all empty PVs if none are named on the command line.
-A|--autobackup y|n
Specifies if metadata should be backed up automatically after a change. Enabling
this is strongly advised! See vgcfgbackup(8) for more information.
--commandprofile String
The command profile to use for command configuration. See lvm.conf(5) for more in-
formation about profiles.
--config String
Config settings for the command. These override lvm.conf settings. The String arg
uses the same format as lvm.conf, or may use section/field syntax. See lvm.conf(5)
for more information about config.
-d|--debug ...
Set debug level. Repeat from 1 to 6 times to increase the detail of messages sent
to the log file and/or syslog (if configured).
--driverloaded y|n
If set to no, the command will not attempt to use device-mapper. For testing and
debugging.
-f|--force ...
Override various checks, confirmations and protections. Use with extreme caution.
-h|--help
Display help text.
--lockopt String
Used to pass options for special cases to lvmlockd. See lvmlockd(8) for more in-
formation.
--longhelp
Display long help text.
--mirrorsonly
Only remove missing PVs from mirror LVs.
--nolocking
Disable locking.
--profile String
An alias for --commandprofile or --metadataprofile, depending on the command.
-q|--quiet ...
Suppress output and log messages. Overrides --debug and --verbose. Repeat once to
also suppress any prompts with answer 'no'.
--removemissing
Removes all missing PVs from the VG, if there are no LVs allocated on them. This
resumes normal operation of the VG (new LVs may again be created, changed and so
on). If this is not possible because LVs are referencing the missing PVs, this op-
tion can be combined with --force to have the command remove any partial LVs. In
this case, any LVs and dependent snapshots that were partly on the missing disks
are removed completely, including those parts on disks that are still present. If
LVs spanned several disks, including ones that are lost, salvaging some data first
may be possible by activating LVs in partial mode.
--reportformat basic|json
Overrides current output format for reports which is defined globally by the re-
port/output_format setting in lvm.conf. basic is the original format with columns
and rows. If there is more than one report per command, each report is prefixed
with the report name for identification. json produces report output in JSON for-
mat. See lvmreport(7) for more information.
-t|--test
Run in test mode. Commands will not update metadata. This is implemented by dis-
abling all metadata writing but nevertheless returning success to the calling func-
tion. This may lead to unusual error messages in multi-stage operations if a tool
relies on reading back metadata it believes has changed but hasn't.
-v|--verbose ...
Set verbose level. Repeat from 1 to 4 times to increase the detail of messages sent
to stdout and stderr.
--version
Display version information.
-y|--yes
Do not prompt for confirmation interactively but always assume the answer yes. Use
with extreme caution. (For automatic no, see -qq.)
VARIABLES
VG
Volume Group name. See lvm(8) for valid names.
PV
Physical Volume name, a device path under /dev. For commands managing physical ex-
tents, a PV positional arg generally accepts a suffix indicating a range (or multi-
ple ranges) of physical extents (PEs). When the first PE is omitted, it defaults to
the start of the device, and when the last PE is omitted it defaults to end. Start
and end range (inclusive): PV[:PE-PE]... Start and length range (counting from 0):
PV[:PE+PE]...
String
See the option description for information about the string content.
Size[UNIT]
Size is an input number that accepts an optional unit. Input units are always
treated as base two values, regardless of capitalization, e.g. 'k' and 'K' both re-
fer to 1024. The default input unit is specified by letter, followed by |UNIT.
UNIT represents other possible input units: bBsSkKmMgGtTpPeE. b|B is bytes, s|S is
sectors of 512 bytes, k|K is KiB, m|M is MiB, g|G is GiB, t|T is TiB, p|P is PiB,
e|E is EiB. (This should not be confused with the output control --units, where
capital letters mean multiple of 1000.)
ENVIRONMENT VARIABLES
See lvm(8) for information about environment variables used by lvm. For example,
LVM_VG_NAME can generally be substituted for a required VG parameter.
SEE ALSO
lvm(8) lvm.conf(5) lvmconfig(8)
pvchange(8) pvck(8) pvcreate(8) pvdisplay(8) pvmove(8) pvremove(8) pvresize(8) pvs(8) pvs-
can(8)
vgcfgbackup(8) vgcfgrestore(8) vgchange(8) vgck(8) vgcreate(8) vgconvert(8) vgdisplay(8)
vgexport(8) vgextend(8) vgimport(8) vgimportclone(8) vgmerge(8) vgmknodes(8) vgreduce(8)
vgremove(8) vgrename(8) vgs(8) vgscan(8) vgsplit(8)
lvcreate(8) lvchange(8) lvconvert(8) lvdisplay(8) lvextend(8) lvreduce(8) lvremove(8)
lvrename(8) lvresize(8) lvs(8) lvscan(8)
lvm-fullreport(8) lvm-lvpoll(8) lvm2-activation-generator(8) blkdeactivate(8) lvmdump(8)
dmeventd(8) lvmpolld(8) lvmlockd(8) lvmlockctl(8) cmirrord(8) lvmdbusd(8)
lvmsystemid(7) lvmreport(7) lvmraid(7) lvmthin(7) lvmcache(7)
Red Hat, Inc. LVM TOOLS 2.03.11(2) (2021-01-08) VGREDUCE(8)
Generated by $Id: phpMan.php,v 4.55 2007/09/05 04:42:51 chedong Exp $ Author: Che Dong
On Apache
Under GNU General Public License
2025-11-21 18:03 @216.73.216.164 CrawledBy Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)