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vgmerge



SYNOPSIS

       vgmerge  [-A|--autobackup{y|n}]  [-d|--debug]  [-h|--help]
       [-l|--list]  [-t|--test]  [-v|--verbose]   DestinationVol­
       umeGroupName SourceVolumeGroupName


DESCRIPTION

       vgmerge  merges  two  existing volume groups. The inactive
       SourceVolumeGroupName will be merged into the Destination­
       VolumeGroupName  if  physical  extent  sizes are equal and
       physical and  logical  volume  summaries  of  both  volume
       groups fit into DestinationVolumeGroupName's limits.

   OPTIONS
       -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  merged   DestinationVolumeGroupName   like
              "vgdisplay -v".

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

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


Examples

       "vgmerge -v databases my_vg" merges  the  inactive  volume
       group  named  "my_vg"  into  the active or inactive volume
       group named "databases" giving  verbose  runtime  informa­
       tion.


DIAGNOSTICS

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

       1  2 volume group names must be entered on command line
       2  volume group to merge from must be inactive
       3  error reading VGDA of volume group to merge into
       4  error reading VGDA of volume group to merge from
       5  error setting up VGDA for merge
       6  error extending VGDA by physical volume in kernel

       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 also1

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


AUTHOR

       Heinz Mauelshagen <Linux-LVM@Sistina.com>

Heinz Mauelshagen           LVM TOOLS                  VGMERGE(8)
  
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