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vgchange(8)
NAME
  vgchange - Sets the availability of a volume group to yes or no

SYNOPSIS
  /usr/sbin/vgchange -a Availability [-lps] VolumeGroupName

DESCRIPTION
				     Note

       This command is no longer supported on Digital UNIX systems.
       Features formerly provided by the Logical Volume Manager (LVM)
       are now provided by the Logical Storage Manager (LSM).  Existing
       LVM volumes must be migrated to LSM, using an encapsulation
       process.	 For information about moving LVM volumes to LSM, see
       the vollvmencap(8) reference page and the manual Logical Storage
       Manager.


  The vgchange command activates or deactivates one or more volume groups.
  The change depends on the value specified by the -a flag; namely, y or n.

  The vgchange -a n command deactivates the VolumeGroupName and its
  associated logical volumes. You must close the logical volumes prior to
  invoking the vgchange -a n command.  For example, if the logical volume
  contains a file system, you must unmount the filesystem.

  The vgchange -a y command activates the VolumeGroupName, and all associated
  physical and logical volumes. When a volume group is activated, it is
  available for use, its logical volumes are available, and its physical
  extents are synchronized (if they are stale).	 However, if you included the
  -s flag on the command line, synchronization does not occur.	If the
  program can not access a physical volume, it lists the volume's status as
  missing. If too many physical volumes in the volume group are missing, the
  program notifies you that the group does not have a quorum and cannot be
  activated. The -p flag allows you to activate the volume group only if all
  of the physical volumes belonging to the volume group are available. If the
  -l flag is set, later attempts to open the logical volumes will fail.	 To
  make an open of these logical volumes succeed, the command lvchange -a y
  must be executed.

FLAGS
  -a Availability
	    Sets the availability of the volume group. The Availability
	    parameter is represented by one of the following:

	    y	      Makes a volume group available.

	    n	      Makes a volume group temporarily unavailable.

  -l	    Disables the open of the logical volumes that belongs to the
	    volume group.

  -p	    Activates the volume group only if all of the physical volumes
	    that belong to it are available.

  -s	    Disables the synchronization of the stale physical extents within
	    the volume group specified with the VolumeGroupName parameter.
	    This flag only makes sense when -a y is specified.

EXAMPLES
   1.  To activate the volume group vg03, enter:
	    vgchange -a y /dev/vg03

   2.  To deactivate the volume group vg03, enter:
	    vgchange -a n /dev/vg03

   3.  To activate volume group vg03 without synchronizing extents that are
       not current, enter:
	    vgchange -a y -s /dev/vg03

FILES
  /usr/sbin/vgchange
	    Specifies the command path

RELATED INFORMATION
  Commands:  vgcreate(8), umount(8), vgdisplay(8), vgextend(8), vgreduce(8)