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lvsync(1M)							    lvsync(1M)

NAME
       lvsync - synchronize stale mirrors in LVM logical volumes

SYNOPSIS
       lv_path ...

   Remarks
       This command requires the installation of the optional HP MirrorDisk/UX
       software (not included in the standard HP-UX operating  system)	before
       it can be used.

       If the logical volume input arguments belong to a combination of volume
       groups version 1.0 and 2.0 or higher, the arguments  may	 not  be  pro‐
       cessed in the order they are listed on the command line.

DESCRIPTION
       The  command  synchronizes  the physical extents of each logical volume
       specified by lv_path.  Synchronization occurs only on physical  extents
       that  are  stale	 mirrors of the original logical extent.  The synchro‐
       nization process can be time consuming, depending on the hardware char‐
       acteristics and the amount of data.

   Arguments
       recognizes the following argument:

	      lv_path	The  block device path name of a mirrored logical vol‐
			ume.

   Options
       recognizes the following option:

	      Perform mirror synchronization of logical volumes within a  vol‐
	      ume group
			using  multiple	 parallel  threads.   Logical  volumes
			belonging to different volume groups will be  synchro‐
			nized  serially.   It is possible that logical volumes
			start and/or complete their synchronization in a  dif‐
			ferent order than specified on the command line.

			The  maximum  number of threads used can be controlled
			using the system tunable.

			NOTE: This option has no effect if the volume group is
			activated in shared mode.

EXTERNAL INFLUENCES
   Environment Variables
       determines the language in which messages are displayed.

       If is not specified or is null, it defaults to "C" (see lang(5)).

       If  any	internationalization variable contains an invalid setting, all
       internationalization variables default to "C" (see environ(5)).

EXAMPLES
       Synchronize the mirrors on a logical volume:

       Synchronize the mirrors on three logical volumes using multiple	paral‐
       lel threads:

       Add  mirror copies using with the option for three logical volumes, and
       then synchronize mirrors on these three logical volumes using  multiple
       parallel threads.

       First, add mirror copies to each logical volume using with the option:

       Now synchronize the mirrors on these three logical volumes using multi‐
       ple parallel threads:

SEE ALSO
       lvdisplay(1M), lvextend(1M), vgsync(1M).

		  Requires Optional HP MirrorDisk/UX Software	    lvsync(1M)

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