LVCHANGE(8) System Manager's Manual LVCHANGE(8)
NAME
lvchange - change attributes of a logical volume
SYNOPSIS
lvchange [-A|--autobackup {y|n}] [-a|--available {y|n}] [-C|--contiguous {y|n}] [-d|--debug] [-h|--help] [-p|--permission {r|rw}]
[-r|--readahead ReadAheadSectors] [-v/--verbose] LogicalVolumePath [LogicalVolumePath...]
DESCRIPTION
lvchange allows you to change the attributes of a logical volume.
OPTIONS
-A, --autobackup y/n
Controls automatic backup of VG metadata after the change ( see vgcfgbackup(8) ). Default is yes.
-a, --available y/n
Controls the availability of the logical volumes for use. This is (among others) useful for changing the logical volume's name (
see lvrename(8) ) safely.
-C, --contiguous y/n
Tries to set or resets the contiguous allocation policy for logical volumes. It's only possible to change a non-contiguous logical
volume's allocation policy to contiguous, if all of the allocated physical extents are already contiguous.
-d, --debug
Enables additional debugging output (if compiled with DEBUG).
-h, --help
Print a usage message on standard output and exit successfully.
-p, --permission r/w
Change access permission to read-only or read/write.
-r, --readahead ReadAheadSectors
Change read ahead sector count per logical between 2 and 120.
-v, --verbose
Gives verbose runtime information about lvchange's activities.
Examples
"lvchange -x n /dev/vg00/lvol1" prevents the allocation of any physical extents on logical volume lvol1 in volume group vg00.
DIAGNOSTICS
lvchange returns an exit code of 0 for success or > 0 for error:
1 invalid logical volume name
2 error checking existence of volume group
3 logical volume cannot be opened
4 logical volume access permissions cannot be set
5 logical volume status cannot be set
6 logical volume allocation policy cannot be set
7 VGDA for logical volume cannot be written to the physical volumes
8 error changing read ahead sectors
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
ENVIRONMENT VARIABLES
LVM_AUTOBACKUP
If this variable is set to "no" then the automatic backup of VG metadata is disabled.
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).
LVM_VG_NAME
The default Volume Group Name to use. Setting this variable enables you to enter just the Logical Volume Name rather than its com-
plete path.
See also
lvm(8), lvcreate(8)
AUTHOR
Heinz Mauelshagen <Linux-LVM@Sistina.com>
Heinz Mauelshagen LVM TOOLS LVCHANGE(8)