LVCHANGE(8)						      System Manager's Manual						       LVCHANGE(8)

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}] [-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 deac-
	      tivate 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
	      Controls whether or not a mirrored logical volume is monitored by 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.

       --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  equiva-
	      lent 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)

Sistina Software UK					 LVM TOOLS 2.02.44-cvs (02-17-09)					       LVCHANGE(8)