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

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

NAME         top

       vgsplit - Move physical volumes into a new or existing volume group

SYNOPSIS         top

       vgsplit option_args position_args
           [ option_args ]

DESCRIPTION         top

       vgsplit moves one or more PVs from a source VG to a destination VG.
       The PVs can be specified explicitly or implicitly by naming an LV, in
       which case on PVs underlying the LV are moved.

       If the destination VG does not exist, a new VG is created (command
       options can be used to specify properties of the new VG, also see
       vgcreate(8).)

       LVs cannot be split between VGs; each LV must be entirely on the PVs
       in the source or destination VG.

       vgsplit can only move complete PVs. (See pvmove(8) for moving part of
       a PV.)

USAGE         top

       Split a VG by specified PVs.

       vgsplit VG VG PV ...
           [ COMMON_OPTIONS ]

       Split a VG by PVs in a specified LV.

       vgsplit -n|--name LV VG VG
           [ COMMON_OPTIONS ]

       Common options for command:
           [ -A|--autobackup y|n ]
           [ -c|--clustered y|n ]
           [ -l|--maxlogicalvolumes Number ]
           [ -p|--maxphysicalvolumes Number ]
           [ -M|--metadatatype lvm2|lvm1 ]
           [    --alloc
           contiguous|cling|cling_by_tags|normal|anywhere|inherit ]
           [    --[vg]metadatacopies all|unmanaged|Number ]

       Common options for lvm:
           [ -d|--debug ]
           [ -h|--help ]
           [ -q|--quiet ]
           [ -t|--test ]
           [ -v|--verbose ]
           [ -y|--yes ]
           [    --commandprofile String ]
           [    --config String ]
           [    --driverloaded y|n ]
           [    --longhelp ]
           [    --profile String ]
           [    --version ]

OPTIONS         top

       --alloc contiguous|cling|cling_by_tags|normal|anywhere|inherit
              Determines the allocation policy when a command needs to
              allocate Physical Extents (PEs) from the VG. Each VG and LV
              has an allocation policy which can be changed with
              vgchange/lvchange, or overriden on the command line.  normal
              applies common sense rules such as not placing parallel
              stripes on the same PV.  inherit applies the VG policy to an
              LV.  contiguous requires new PEs be placed adjacent to
              existing PEs.  cling places new PEs on the same PV as existing
              PEs in the same stripe of the LV.  If there are sufficient PEs
              for an allocation, but normal does not use them, anywhere will
              use them even if it reduces performance, e.g. by placing two
              stripes on the same PV.  Optional positional PV args on the
              command line can also be used to limit which PVs the command
              will use for allocation.  See lvm(8) for more information
              about allocation.

       -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.

       -c|--clustered y|n
              Specifies the clustered property of the new VG.

       --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
              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.

       -h|--help
              Display help text.

       --longhelp
              Display long help text.

       -l|--maxlogicalvolumes Number
              Sets the maximum number of LVs allowed in a VG.

       -p|--maxphysicalvolumes Number
              Sets the maximum number of PVs that can belong to the VG.  The
              value 0 removes any limitation.  For large numbers of PVs,
              also see options --pvmetadatacopies, and --vgmetadatacopies
              for improving performance.

       -M|--metadatatype lvm2|lvm1
              Specifies the type of on-disk metadata to use.  lvm2 (or just
              2) is the current, standard format.  lvm1 (or just 1) is a
              historical format that can be used for accessing old data.

       -n|--name String
              Move only PVs used by the named LV.

       --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.

       --[vg]metadatacopies all|unmanaged|Number
              Number of copies of the VG metadata that are kept.  VG
              metadata is kept in VG metadata areas on PVs in the VG, i.e.
              reserved space at the start and/or end of the PVs.  Keeping a
              copy of the VG metadata on every PV can reduce performance in
              VGs containing a large number of PVs.  When this number is set
              to a non-zero value, LVM will automatically choose PVs on
              which to store metadata, using the metadataignore flags on PVs
              to achieve the specified number.  The number can also be
              replaced with special string values: unmanaged causes LVM to
              not automatically manage the PV metadataignore flags.  all
              causes LVM to first clear the metadataignore flags on all PVs,
              and then to become unmanaged.

       -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: 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 is terabytes, p|P is
              petabytes, e|E is exabytes.  (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)

       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) 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)

       lvm2-activation-generator(8) blkdeactivate(8) lvmdump(8)

       dmeventd(8) lvmetad(8) lvmpolld(8) lvmlockd(8) lvmlockctl(8) clvmd(8)
       cmirrord(8) lvmdbusd(8)

       lvmsystemid(7) lvmreport(7) lvmraid(7) lvmthin(7) lvmcache(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, send it to linux-lvm@redhat.com.  This page was obtained
       from the project's upstream Git repository 
       ⟨git://sourceware.org/git/lvm2.git⟩ on 2017-05-03.  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 2.02.171(2)-git (2017-04-13)         VGSPLIT(8)

Pages that refer to this page: lvmcache(7)lvchange(8)lvconvert(8)lvcreate(8)lvdisplay(8)lvextend(8)lvm(8)lvmconfig(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)vgmerge(8)vgmknodes(8)vgreduce(8)vgremove(8)vgrename(8)vgs(8)vgscan(8)vgsplit(8)