VGSPLIT(8)                                                          VGSPLIT(8)

       vgsplit - split a volume groups

       vgsplit  [-A|--autobackup  {y|n}]  [-d|-ebug]  [-h|--help]  [-l|--list]
       [-t|--test] [-v|--verbose] [--version] ExistingVolumeGroupName  NewVol-
       umeGroupName PhysicalVolumePath [PhysicalVolumePath...]

       vgsplit  moves  one  or  more  PhysicalVolumePath(s)  from ExistingVol-
       umeGroupName into NewVolumeGroupName.  Physical volumes that are  split
       off  to  the new volume group must not contain any partial logical vol-
       umes.  Use pvmove(8) to move logical volumes to  the  desired  physical

       -A, --autobackup {y|n}
              Controls  automatic  backup  of VG metadata after the merge (see
              vgcfgbackup(8)).  Default is yes.

       -d, --debug
              Enables additional debugging output (if compiled with DEBUG).

       -h, --help
              Print a usage message on standard output and exit  successfully.

       -l, --list
              Display split volume group names like vgdisplay -v.

       -t, --test
              Do a test run WITHOUT any real changes.

       -v, --verbose
              Display  verbose runtime information about vgsplit's activities.

              Display tool and IOP version and exit successfully.

       To separate physical volumes /dev/sdk1 and /dev/sdn1 from the  existing
       volume group databases and put them into new volume group my_vg.

            vgsplit -v databases my_vg /dev/sdk1 /dev/sdn1

       vgsplit returns an exit code of 0 for success and > 0 for error:

       1  invalid volume group name
       2  invalid physical volume name
       3  malloc error
       4  error reading VGDA of existing volume group
       5  new volume group already exists
       6  error setting up VGDA for split
       7  logical volume to be split into new volume group must be inactive
       8  logical volume doesn't exist
       9  error removing logical volume from kernel
       10 error reducing VGDA by physical volume in kernel
       11 error writing changed existing VGDA to physical volume(s)
       12 error writing new VGDA to physical volume(s)
       13 error creating device special files for changed existing volume group
       14 error creating device special files for new volume group
       15 error creating new VGDA in kernel
       16 error inserting new volume group name into lvmtab

       95 driver/module not in kernel
       96 invalid I/O protocol version
       97 error locking logical volume manager
       98 invalid lvmtab (run vgscan(8))
       99 invalid command line

              If  this variable is set to "no" then the automatic backup of VG
              metadata is turned off.

              This variable determines the backup history depth of  kept  VGDA
              copy  files in /etc/lvmconf.  It can be set to a positive number
              between 0 and 999.  The higher this number is, the more  changes
              you can restore using vgcfgrestore(8).

       lvm(8), vgcreate(8), vgextend(8), vgreduce(8), vgmerge(8), pvmove(8)

       Heinz Mauelshagen <>

Heinz Mauelshagen                  LVM TOOLS                        VGSPLIT(8)