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|--contigu-
       ous 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  [LogicalVol-
       umePath...]

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 oth-
              ers, 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 incom-
              plete 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  ini-
              trd), 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   --ignore-
              lockingfailure,  --ignoremonitoring,  --poll n and setting LVM_SUPPRESS_LOCKING_FAILURE_MESSAGES environment vari-
              able.

       --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 use-
              ful 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 2.02.84(2) (2011-02-09)                                    LVCHANGE(8)