VGCHANGE(8)                                                        VGCHANGE(8)

       vgchange - change attributes of a volume group

       vgchange  [-A|--autobackup  {y|n}]  [-a|--available {y|n}] [-d|--debug]
       [-h|--help]   [-l|--logicalvolume   MaxLogicalVolumes]   [-v|--verbose]
       [--version] [-x|--allocation {y|n}] [VolumeGroupName...]

       vgchange  allows  you  to  change  the attributes of one or more volume
       groups.  Its main purpose is to activate  and  deactivate  VolumeGroup-
       Name,  or  all  volume groups if none is specified.  Only active volume
       groups are subject to changes and allow access to  their  logical  vol-
       umes.   During volume group activation, if vgchange recognizes snapshot
       logical volumes which were dropped because they ran out  of  space,  it
       displays  a  message  informing  the  administrator that such snapshots
       should be removed (see lvremove(8)).

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

       -a, --available{y|n}
              Controls  the availability of the volume group for input/output.
              In other words: makes a volume group known/unknown to  the  ker-

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

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

       -l, --logicalvolume MaxLogicalVolumes
              Changes the maximum logical volume number of an  existing  inac-
              tive volume group.

       -v, --verbose
              Displays  verbose  runtime  information about vgchange's activi-

              Displays tool and IOP version and exit successfully.

       -x, --allocation{y|n}
              Enables or disables the extension/reduction of this volume group
              with/by physical volumes.

       To activate all known volume groups in the system:

            vgchange -a y

       To  change  the  maximum  number  of logical volumes of inactive volume
       group vg00 to 128.

            vgchange -l 128 /dev/vg00

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

       1  error writing VGDA to physical volume(s)
       2  error changing extensibility of volume group
       3  error doing backup of VGDA
       4  extension of MaxLogicalVolume would cause overlapped physical extents
       5  error backup of volume group metadata
       6  error copying volume group metadata to work file
       7  error creating volume group directory and special files
       8  error removing volume group directory and special files

       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 volume groups can't be activated, run vgscan(8) and retry.

              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)

       Heinz Mauelshagen <>

Heinz Mauelshagen                  LVM TOOLS                       VGCHANGE(8)