vgreduce(8) — Linux manual page

NAME | SYNOPSIS | DESCRIPTION | USAGE | OPTIONS | VARIABLES | ENVIRONMENT VARIABLES | SEE ALSO | COLOPHON

VGREDUCE(8)              System Manager's Manual              VGREDUCE(8)

NAME         top

       vgreduce — Remove physical volume(s) from a volume group

SYNOPSIS         top

       vgreduce option_args position_args
           [ option_args ]

        -a|--all
        -A|--autobackup y|n
           --commandprofile String
           --config String
        -d|--debug
           --devices PV
           --devicesfile String
           --driverloaded y|n
        -f|--force
        -h|--help
           --journal String
           --lockopt String
           --longhelp
           --mirrorsonly
           --nohints
           --nolocking
           --profile String
        -q|--quiet
           --removemissing
           --reportformat basic|json
        -t|--test
        -v|--verbose
           --version
        -y|--yes

DESCRIPTION         top

       vgreduce removes one or more unused PVs from a VG.

USAGE         top

       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 ]
           [    --devices PV ]
           [    --devicesfile String ]
           [    --driverloaded y|n ]
           [    --journal String ]
           [    --lockopt String ]
           [    --longhelp ]
           [    --nohints ]
           [    --nolocking ]
           [    --profile String ]
           [    --version ]

OPTIONS         top

       -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 information about profiles.

       --config String
              Config settings for the command. These override lvm.conf(5)
              settings.    The   String  arg  uses  the  same  format  as
              lvm.conf(5),  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).

       --devices PV
              Devices  that  the  command  can  use.  This  option can be
              repeated or accepts a comma separated list of devices. This
              overrides the devices file.

       --devicesfile String
              A file listing devices that LVM should use.  The file  must
              exist   in   /etc/lvm/devices/  and  is  managed  with  the
              lvmdevices(8)  command.   This  overrides  the  lvm.conf(5)
              devices/devicesfile and devices/use_devicesfile settings.

       --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.

       --journal String
              Record   information   in   the   systemd   journal.   This
              information is in addition to information  enabled  by  the
              lvm.conf  log/journal setting.  command: record information
              about the command.   output:  record  the  default  command
              output.  debug: record full command debugging.

       --lockopt String
              Used  to  pass  options for special cases to lvmlockd.  See
              lvmlockd(8) for more information.

       --longhelp
              Display long help text.

       --mirrorsonly
              Only remove missing PVs from mirror LVs.

       --nohints
              Do not use the hints file to  locate  devices  for  PVs.  A
              command  may  read  more devices to find PVs when hints are
              not used. The command will still perform standard hint file
              invalidation where appropriate.

       --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 option 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  report/output_format setting in
              lvm.conf(5).  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  format.  See
              lvmreport(7) for more information.

       -t|--test
              Run in test mode. Commands will not update metadata.   This
              is  implemented  by  disabling  all  metadata  writing  but
              nevertheless returning success  to  the  calling  function.
              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         top

       VG     Volume Group name.  See lvm(8) for valid names.

       PV     Physical Volume name, a device path under /dev.  For
              commands managing physical extents, a PV positional 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 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 refer
              to 1024.  The default input unit is specified by letter,
              followed by |UNIT.  UNIT represents other possible input
              units: 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         top

       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         top

       lvm(8), lvm.conf(5), lvmconfig(8), lvmdevices(8),

       pvchange(8), pvck(8), pvcreate(8), pvdisplay(8), pvmove(8),
       pvremove(8), pvresize(8), pvs(8), pvscan(8),

       vgcfgbackup(8), vgcfgrestore(8), vgchange(8), vgck(8),
       vgcreate(8), vgconvert(8), vgdisplay(8), vgexport(8), vgextend(8),
       vgimport(8), vgimportclone(8), vgimportdevices(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), blkdeactivate(8), lvmdump(8),

       dmeventd(8), lvmpolld(8), lvmlockd(8), lvmlockctl(8), cmirrord(8),
       lvmdbusd(8), fsadm(8),

       lvmsystemid(7), lvmreport(7), lvmcache(7), lvmraid(7), lvmthin(7),
       lvmvdo(7), lvmautoactivation(7)

COLOPHON         top

       This page is part of the lvm2 (Logical Volume Manager 2) project.
       Information about the project can be found at 
       ⟨http://www.sourceware.org/lvm2/⟩.  If you have a bug report for
       this manual page, see ⟨https://github.com/lvmteam/lvm2/issues⟩.
       This page was obtained from the project's upstream Git repository
       ⟨git://sourceware.org/git/lvm2.git⟩ on 2025-02-02.  (At that time,
       the date of the most recent commit that was found in the
       repository was 2025-01-31.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there is
       a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to
       man-pages@man7.org

Red Hat, Inc.     LVM TOOLS 2.03.31(2)-git (2025-01-14)       VGREDUCE(8)

Pages that refer to this page: lvmcache(7)lvchange(8)lvconvert(8)lvcreate(8)lvdisplay(8)lvextend(8)lvm(8)lvmconfig(8)lvmdevices(8)lvmdiskscan(8)lvm-fullreport(8)lvm-lvpoll(8)lvreduce(8)lvremove(8)lvrename(8)lvresize(8)lvs(8)lvscan(8)pvchange(8)pvck(8)pvcreate(8)pvdisplay(8)pvmove(8)pvremove(8)pvresize(8)pvs(8)pvscan(8)vgcfgbackup(8)vgcfgrestore(8)vgchange(8)vgck(8)vgconvert(8)vgcreate(8)vgdisplay(8)vgexport(8)vgextend(8)vgimport(8)vgimportclone(8)vgimportdevices(8)vgmerge(8)vgmknodes(8)vgreduce(8)vgremove(8)vgrename(8)vgs(8)vgscan(8)vgsplit(8)