NAME

       vgmerge — Merge volume groups

SYNOPSIS

       vgmerge position_args
           [ option_args ]

DESCRIPTION

       vgmerge  merges  two  existing  VGs. The inactive source VG is merged into the destination VG if physical
       extent sizes are equal and PV and LV summaries of both VGs fit into the destination VG's limits.

USAGE

       vgmerge VG VG
           [ -A|--autobackup y|n ]
           [ -l|--list ]
           [    --poolmetadataspare y|n ]
           [ COMMON_OPTIONS ]

       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|--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.

       -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.

       -l|--list
              Display merged destination VG like vgdisplay -v.

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

       --longhelp
              Display long help text.

       --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.

       --poolmetadataspare y|n
              Enable or disable the automatic creation and management of a spare pool metadata LV in the  VG.  A
              spare metadata LV is reserved space that can be used when repairing a pool.

       --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'.

       -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.

       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.

EXAMPLES

       Merge  an  inactive  VG  named  "vg00"  into  the active or inactive VG named "databases", giving verbose
       runtime information.
       vgmerge -v databases vg00

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)

Red Hat, Inc.                           LVM TOOLS 2.03.16(2) (2022-05-18)                             VGMERGE(8)