man lvchange () - change attributes of a logical volume
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 complete path.
See also
AUTHOR
Heinz Mauelshagen <Linux-LVM@Sistina.com>