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NAME

       diskutil - Administers quorum partitions in a cluster.

SYNOPSIS

       diskutil -I | -p | -t

DESCRIPTION

       The diskutil utility enables you to administer the quorum partitions in
       a cluster.

OPTIONS

       You can specify the following diskutil options:

       -I     Initializes the quorum partitions. The  -I  option  deletes  any
              cluster  database  and cluster state information from the quorum
              partitions.  Therefore, only invoke diskutil -I when you want to
              initialize the quorum partitions as part of the cluster software
              installation procedure.  Do not invoke diskutil -I on a  running
              cluster.

       -p     Displays  a  summary of the header data structure for the quorum
              partitions.  You can check if the quorum partitions  are  mapped
              to  the  same  physical disk on both cluster systems by invoking
              diskutil -p on each system  and  ensuring  that  the  output  is
              identical.    If   the  output  is  not  identical,  the  quorum
              partitions may not be set up correctly.

              For example:

              # diskutil -p
              ----- Shared State Header ------
              Magic# = 0x39119fcd
              Version = 1
              Updated on Fri Aug 18 15:55:53 2000
              Updated by node 1
              --------------------------------

       -t     Verifies that the cluster system can read information  from  the
              quorum  partitions.   When  you  invoke diskutil -t, the cluster
              system identifies the quorum partition devices and then attempts
              to   read   information  from  both  partitions.   The  read  is
              successful if the system determines that the data is a valid set
              of  initialized  cluster  state  information. If the read is not
              successful, the quorum partitions may not be set up correctly.

              For example:

              # diskutil -t
              Successfully verified that the quorum partitions are accessible.

       Note  that  other diskutil options are only for development, and should
       not be used.

SEE ALSO

       See  the  cluster  Installation  and  Administration  manual  for  more
       information.

                                 October 2000                      diskutil(8)