VGCHANGE(8)

NAME
vgchange - change attributes of a volume group

SYNOPSIS
vgchange [-A/--autobackup y/n] [-a/--available y/n] [-d/--debug] [-h/-?/--help] [-l/--logicalvolume MaxLogicalVolumes] [-v/--verbose] [-x/--allocation y/n] [VolumeGroupName...]

DESCRIPTION
vgchange allows you to change the attributes of a volume group.

  OPTIONS

-A, --autobackup y/n
    Controls automatic backup of metadata after the change. 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.

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

Examples
"vgchange -a y" activates all known volume groups in the system. "vgchange -l 128 /dev/vg00" tries to change the maximum logical volume number of inactive volume group "vg00" to 128.

DIAGNOSTICS
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
9  error setting up copy on write exception table
10 error reading copy on write exception table from disk(s)
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>