lvchange man page on Knoppix

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LVCHANGE(8)							   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] [--ignorelocking‐
       failure]	 [--ignoremonitoring]	[--monitor   {y|n}]   [--poll	{y|n}]
       [--sysinit]   [--noudevsync]   [-M|--persistent	y|n]  [--minor	minor]
       [-P|--partial]  [-p|--permission	 r|rw]	[-r/--readahead	 ReadAheadSec‐
       tors|auto|none]	 [--refresh]  [-t|--test]  [-v|--verbose]  LogicalVol‐
       umePath [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.  Com‐
	      municates 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 logi‐
	      cal volumes. It's only possible to change a non-contiguous logi‐
	      cal  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 synchro‐
	      nization happens automatically.  Data is read from  the  primary
	      mirror  device and copied to the others, so this can take a con‐
	      siderable 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	 moni‐
	      tored  mirror  reports  an  I/O  error,  the  failure is handled
	      according to mirror_image_fault_policy and mirror_log_fault_pol‐
	      icy 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.	  How‐
	      ever,  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 equiva‐
	      lent  to	using	 --ignorelockingfailure,   --ignoremonitoring,
	      --poll n and setting LVM_SUPPRESS_LOCKING_FAILURE_MESSAGES envi‐
	      ronment 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 some‐
	      thing 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 2.02.95(2) (2012-03-06)	   LVCHANGE(8)
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