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vgchange



SYNOPSIS

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


DESCRIPTION

       vgchange allows you to change the  attributes  of  one  or
       more  volume  groups.  Its main purpose is to activate and
       deactivate VolumeGroupName, or all volume groups  if  none
       is  specified.   Only  active volume groups are subject to
       changes and allow access to their logical volumes.  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)).

   OPTIONS
       -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 kernel.

       -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 inactive volume group.

       -v, --verbose
              Displays   verbose   runtime   information    about
              vgchange's activities.

       --version
              Displays  tool  and  IOP  version and exit success­
              fully.

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


EXAMPLES

       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.


ENVIRONMENT VARIABLES

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

       LVM_VG_MAX_BACKUPS
              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).


SEE ALSO

       lvm(8), vgcreate(8)


AUTHOR

       Heinz Mauelshagen <Linux-LVM@Sistina.com>

Heinz Mauelshagen           LVM TOOLS                 VGCHANGE(8)
  
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