Provided by: lvm2_2.03.16-2ubuntu1_amd64 bug

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
           --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

       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 ]
           [    --devices PV ]
           [    --devicesfile String ]
           [    --driverloaded y|n ]
           [    --journal String ]
           [    --lockopt String ]
           [    --longhelp ]
           [    --nohints ]
           [    --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
              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
              Restricts the devices that are visible and accessible to the command.  Devices  not
              listed  will  appear to be missing. 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.  Use  with  caution,  concurrent  commands  may produce incorrect
              results.

       --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

       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

       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), 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), lvmraid(7), lvmthin(7), lvmcache(7)