Linux "vgreduce" Command Line Options and Examples
Remove physical volume

vgreduce removes one or more unused PVs from a VG.USAGE Remove a PV from a VG. vgreduce VG PV .


Usage:

vgreduce option_args position_args
[ option_args ]






Command Line Options:

-a|--all
Removes all empty PVs if none are named on the command line.
vgreduce -a|--all ...
-A|--autobackup
Specifies if metadata should be backed up automatically after a change. Enabling this is stronglyadvised! See vgcfgbackup(8) for more information.
vgreduce -A|--autobackup ...
--commandprofile
The command profile to use for command configuration. See lvm.conf(5) for more information about pro‐files.
vgreduce --commandprofile ...
--config
Config settings for the command. These override lvm.conf settings. The String arg uses the same formatas lvm.conf, or may use section/field syntax. See lvm.conf(5) for more information about config.
vgreduce --config ...
-d|--debug
Set debug level. Repeat from 1 to 6 times to increase the detail of messages sent to the log fileand/or syslog (if configured).
vgreduce -d|--debug ...
--driverloaded
If set to no, the command will not attempt to use device-mapper. For testing and debugging.
vgreduce --driverloaded ...
-f|--force
Override various checks, confirmations and protections. Use with extreme caution.
vgreduce -f|--force ...
-h|--help
Display help text.
vgreduce -h|--help ...
--longhelp
Display long help text.
vgreduce --longhelp ...
--mirrorsonly
Only remove missing PVs from mirror LVs.
vgreduce --mirrorsonly ...
--profile
An alias for --commandprofile or --metadataprofile, depending on the command.
vgreduce --profile ...
-q|--quiet
Suppress output and log messages. Overrides --debug and --verbose. Repeat once to also suppress anyprompts with answer 'no'.
vgreduce -q|--quiet ...
--removemissing
Removes all missing PVs from the VG, if there are no LVs allocated on them. This resumes normal opera‐tion of the VG (new LVs may again be created, changed and so on). If this is not possible because LVsare referencing the missing PVs, this option can be combined with --force to have the command removeany partial LVs. In this case, any LVs and dependent snapshots that were partly on the missing disksare removed completely, including those parts on disks that are still present. If LVs spanned severaldisks, including ones that are lost, salvaging some data first may be possible by activating LVs inpartial mode.
vgreduce --removemissing ...
--reportformat
Overrides current output format for reports which is defined globally by the report/output_format set‐ting in lvm.conf. basic is the original format with columns and rows. If there is more than onereport per command, each report is prefixed with the report name for identification. json producesreport output in JSON format. See lvmreport(7) for more information.
vgreduce --reportformat ...
-t|--test
Run in test mode. Commands will not update metadata. This is implemented by disabling all metadatawriting but nevertheless returning success to the calling function. This may lead to unusual error mes‐sages in multi-stage operations if a tool relies on reading back metadata it believes has changed buthasn't.
vgreduce -t|--test ...
-v|--verbose
Set verbose level. Repeat from 1 to 4 times to increase the detail of messages sent to stdout andstderr.
vgreduce -v|--verbose ...
--version
Display version information.
vgreduce --version ...
-y|--yes
Do not prompt for confirmation interactively but always assume the answer yes. Use with extreme cau‐tion. (For automatic no, see -qq.)VARIABLESVGVolume Group name. See lvm(8) for valid names.PVPhysical Volume name, a device path under /dev. For commands managing physical extents, a PV posi‐tional arg generally accepts a suffix indicating a range (or multiple ranges) of physical extents(PEs). When the first PE is omitted, it defaults to the start of the device, and when the last PE isomitted it defaults to end. Start and end range (inclusive): PV[:PE-PE]... Start and length range(counting from 0): PV[:PE+PE]...StringSee 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 val‐ues, regardless of capitalization, e.g. 'k' and 'K' both refer to 1024. The default input unit isspecified 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 kilobytes, m|M is megabytes, g|G is gigabytes, t|T isterabytes, p|P is petabytes, e|E is exabytes. (This should not be confused with the output control
vgreduce -y|--yes ...
--units,
ENVIRONMENT VARIABLESSee lvm(8) for information about environment variables used by lvm. For example, LVM_VG_NAME can generally besubstituted for a required VG parameter.
vgreduce --units, ...