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



 NAME
      vgsync - synchronize stale logical volume mirrors in LVM volume groups

 SYNOPSIS
      /usr/sbin/vgsync vg_name ...

    Remarks
      This command requires the installation of the optional HP MirrorDisk/UX
      software, which is not included in the standard HP-UX operating system.

 DESCRIPTION
      The vgsync command synchronizes the physical extents of each mirrored
      logical volume in the volume group specified by vg_name  ....
      Synchronization occurs only on the physical extents that are stale
      mirrors of the original logical extent.

      The synchronization process can be time consuming, depending on the
      hardware characteristics and the amount of data.	Unless disabled, the
      mirrors within a volume group are synchronized automatically when the
      volume group is activated by the vgchange -a y command.

    Arguments
      vgsync recognizes the following argument:

	   vg_name	  The path name of a volume group.

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

      If LANG 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 volume group /dev/vg04:

	   vgsync /dev/vg04

 WARNINGS
      It is not advisable to interrupt a vgsync process.

 SEE ALSO
      lvsync(1M), vgchange(1M), vgdisplay(1M).









 Hewlett-Packard Company	    - 1 -   HP-UX Release 11i: November 2000