volrecover man page on DigitalUNIX

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volrecover(8)							 volrecover(8)

       volrecover - Performs volume recovery operations

       /sbin/volrecover	 [-g  diskgroup]  [-sb] [-npVv] [-o options] [volume |

       Specifies the disk group for the operation, either by disk group ID  or
       by  disk	 group name. By default, the disk group is chosen based on the
       volume or medianame operands. If no volume or  medianame	 operands  are
       given, all disks in this disk group will be recovered.

	      Without the -g option and operands, all volumes needing recovery
	      in all imported disk groups will be recovered.  Starts  disabled
	      volumes  selected by the operation. LSM starts the selected vol‐
	      umes with the -o delayrecover start option before performing any
	      other  recovery  actions. This requests that any operations that
	      can be delayed in starting a volume will be delayed.   In	 other
	      words,  only  those operations necessary to make a volume avail‐
	      able for use will occur. Other operations, such as mirror resyn‐
	      chronization,  attachment	 of  stale  plexes  and	 subdisks, and
	      recovery of stale RAID 5 parity are normally delayed.   Performs
	      recovery	operations in the background. With this option, volre‐
	      cover will run in the background to attach stale plexes and sub‐
	      disks  and  to resynchronize mirrored volumes and RAID 5 parity.
	      If the -b option is used with the -s  option,  volumes  will  be
	      started  before  recovery	 begins.   Performs no recovery opera‐
	      tions.  If used with the -s option, volumes are started, but  no
	      other  actions  are  taken. If the -n option is used with the -p
	      option, volrecover prints a list of startable volumes.  Prints a
	      list  of	selected volumes that are startable. The list contains
	      the following information: the volume name, the disk group ID of
	      the  volume,  the volume's usage type, and a list of state flags
	      pertaining to mirrors of the volume.

	      State flags and their meanings  are:  One	 of  the  mirrors  was
	      detached	by an I/O failure.  One of the mirrors needs recovery,
	      but the recovery is related to an administrative operation,  not
	      an  I/O  failure.	  Neither kdetach nor stale is appropriate for
	      the volume.  Performs a “mock run” of the command. Displays  the
	      commands that volrecover would execute if the operation actually
	      executed.	 Runs in verbose mode; displays information about each
	      task  started by volrecover. For recovery operations (as opposed
	      to start operations), a completion status is displayed when each
	      task  completes.	 Passes	 the  given option arguments to the -o
	      options for the volplex att and volume start operations  invoked
	      by volrecover. An option argument of the form prefix:options can
	      be specified to restrict the set of commands that the -o	option
	      should  be  applied  to.	See  volume(8)	and volplex(8) for the
	      options you can use with prefix.

	      Defined prefixes are: Applies to all invocations of  the	volume
	      utility (volume starts, mirror resynchronizations, RAID 5 parity
	      rebuilds, and RAID 5 subdisk recoveries) Applies to all  invoca‐
	      tions  of	 the  volplex utility (used only for attaching plexes)
	      Applies specifically to plex attach operations Applies  specifi‐
	      cally  to	 volume	 start operations Applies to volume resynchro‐
	      nizations. Starts the volume in degraded mode; defers resynchro‐
	      nization	until  you  initiate  it manually.  Applies to subdisk
	      recoveries Applies to mirror resynchronization and RAID 5 parity

       Specifies  the volume to recover. Limits recovery to the specified vol‐
       ume.  Specifies the disk to recover. Recovers all LSM  objects  on  the
       named disk.

       The  volrecover	utility performs plex attach, RAID 5 subdisk recovery,
       and resynchronization operations for the named volumes or  for  volumes
       that use the named disks (medianame).

       If no medianame or volume operands are specified, the operation applies
       to all volumes requiring recovery (or to all such volumes in the speci‐
       fied disk group).

       If  the	-s option is specified, disabled volumes will be started. With
       the -s and -n options, volumes are started, but no other recovery takes

       Recovery	 operations  are started in an order that prevents two concur‐
       rent operations from involving the same disk. Operations	 that  involve
       unrelated disks will run in parallel.

       To  recover  in	the  background	 any  detached subdisks or plexes that
       resulted from replacement of a specified disk, enter:

	      # volrecover -b medianame To monitor  the	 operations,  use  the

	      # volrecover -v medianame

       Commands: volplex(8), volume(8)

       Other: volintro(8)


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