NAME¶
lvchange - change attributes of a logical volume
SYNOPSIS¶
lvchange [--addtag Tag] [-A|--autobackup y|n] [-a|--available
y|n|ey|en|ly|ln] [--alloc AllocationPolicy] [-C|--contiguous y|n] [-d|--debug]
[--deltag Tag] [--resync] [-h|-?|--help] [--ignorelockingfailure]
[--ignoremonitoring] [--monitor {y|n}] [--poll {y|n}] [--sysinit]
[--noudevsync] [-M|--persistent y|n] [--minor minor] [-P|--partial]
[-p|--permission r|rw] [-r/--readahead ReadAheadSectors|auto|none] [--refresh]
[-t|--test] [-v|--verbose] LogicalVolumePath [LogicalVolumePath...]
DESCRIPTION¶
lvchange allows you to change the attributes of a logical volume including
making them known to the kernel ready for use.
OPTIONS¶
See
lvm for common options.
- -a, --available y|n|ey|en|ly|ln
- Controls the availability of the logical volumes for use.
Communicates with the kernel device-mapper driver via libdevmapper to
activate (-ay) or deactivate (-an) the logical volumes.
- If clustered locking is enabled, -aey will activate
exclusively on one node and -aly will activate only on the local node. To
deactivate only on the local node use -aln. Logical volumes with
single-host snapshots are always activated exclusively because they can
only be used on one node at once.
- -C, --contiguous y|n
- Tries to set or reset 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.
- --resync
- Forces the complete resynchronization of a mirror. In
normal circumstances you should not need this option because
synchronization happens automatically. Data is read from the primary
mirror device and copied to the others, so this can take a considerable
amount of time - and during this time you are without a complete redundant
copy of your data.
- --minor minor
- Set the minor number.
- --monitor y|n
- Start or stop monitoring a mirrored or snapshot logical
volume with dmeventd, if it is installed. If a device used by a monitored
mirror reports an I/O error, the failure is handled according to
mirror_image_fault_policy and mirror_log_fault_policy set in
lvm.conf.
- --poll y|n
- Without polling a logical volume's backgrounded
transformation process will never complete. If there is an incomplete
pvmove or lvconvert (for example, on rebooting after a crash), use
--poll y to restart the process from its last checkpoint. However,
it may not be appropriate to immediately poll a logical volume when it is
activated, use --poll n to defer and then --poll y to
restart the process.
- --sysinit
- Indicates that lvchange(8) is being invoked from early
system initialisation scripts (e.g. rc.sysinit or an initrd), before
writeable filesystems are available. As such, some functionality needs to
be disabled and this option acts as a shortcut which selects an
appropriate set of options. Currently this is equivalent to using
--ignorelockingfailure, --ignoremonitoring, --poll n
and setting LVM_SUPPRESS_LOCKING_FAILURE_MESSAGES environment
variable.
- --noudevsync
- Disable udev synchronisation. The process will not wait for
notification from udev. It will continue irrespective of any possible udev
processing in the background. You should only use this if udev is not
running or has rules that ignore the devices LVM2 creates.
- --ignoremonitoring
- Make no attempt to interact with dmeventd unless --monitor
is specified. Do not use this if dmeventd is already monitoring a
device.
- -M, --persistent y|n
- Set to y to make the minor number specified
persistent.
- -p, --permission r|rw
- Change access permission to read-only or read/write.
- -r, --readahead ReadAheadSectors|auto|none
- Set read ahead sector count of this logical volume. For
volume groups with metadata in lvm1 format, this must be a value between 2
and 120 sectors. The default value is "auto" which allows the
kernel to choose a suitable value automatically. "None" is
equivalent to specifying zero.
- --refresh
- If the logical volume is active, reload its metadata. This
is not necessary in normal operation, but may be useful if something has
gone wrong or if you're doing clustering manually without a clustered lock
manager.
Examples¶
"lvchange -pr vg00/lvol1" changes the permission on volume lvol1 in
volume group vg00 to be read-only.
SEE ALSO¶
lvm(8),
lvcreate(8),
vgchange(8)