Veritas Storage Foundation 5.1 SP1 for Oracle RAC Administrator"s Guide (5900-1512, April 2011)

If the utility does not show a message stating a disk is ready, verification has
failed. Failure of verification can be the result of an improperly configured disk
array. It can also be caused by a bad disk.
If the failure is due to a bad disk, remove and replace it. The vxfentsthdw utility
indicates a disk can be used for I/O fencing with a message resembling:
The disk /dev/vx/rdmp/c1t1d0 is ready to be configured for
I/O Fencing on node galaxy
Note: For A/P arrays, run the vxfentsthdw command only on active enabled paths.
To test disks using vxfentsthdw script
1
Make sure system-to-system communication is functioning properly.
2
From one node, start the utility.
# vxfentsthdw [-n]
3
After reviewing the overview and warning that the tests overwrite data on
the disks, confirm to continue the process and enter the node names.
******** WARNING!!!!!!!! ********
THIS UTILITY WILL DESTROY THE DATA ON THE DISK!!
Do you still want to continue : [y/n] (default: n) y
Enter the first node of the cluster: galaxy
Enter the second node of the cluster: nebula
4
Enter the names of the disks you are checking. For each node, the disk may
be known by the same name:
Enter the disk name to be checked for SCSI-3 PGR on node
galaxy in the format: /dev/vx/rdmp/cxtxdx
/dev/vx/rdmp/c2t13d0
Enter the disk name to be checked for SCSI-3 PGR on node
nebula in the format: /dev/vx/rdmp/cxtxdx
Make sure it's the same disk as seen by nodes galaxy and nebula
/dev/vx/rdmp/c2t13d0
If the serial numbers of the disks are not identical, then the test terminates.
5
Review the output as the utility performs the checks and report its activities.
Administering SF Oracle RAC and its components
Administering I/O fencing
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