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

Registered keys are lost on the coordinator disks

If the coordinator disks lose the keys that are registered, the cluster might panic

when a cluster reconfiguration occurs.

To refresh the missing keys

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Use the vxfenswap utility to replace the coordinator disks with the same

disks. The vxfenswap utility registers the missing keys during the disk

replacement.

See “Refreshing lost keys on coordinator disks” on page 130.

Replacing defective disks when the cluster is offline

If the disk becomes defective or inoperable and you want to switch to a new

diskgroup in a cluster that is offline, then perform the following procedure.

In a cluster that is online, you can replace the disks using the vxfenswap utility.

See “About the vxfenswap utility” on page 122.

Review the following information to replace coordinator disk in the coordinator

disk group, or to destroy a coordinator disk group.

Note the following about the procedure:

■ When you add a disk, add the disk to the disk group vxfencoorddg and retest

the group for support of SCSI-3 persistent reservations.

■ You can destroy the coordinator disk group such that no registration keys

remain on the disks. The disks can then be used elsewhere.

To replace a disk in the coordinator disk group when the cluster is offline

If VCS is running, shut it down:

# hastop -all

Make sure that the port h is closed on all the nodes. Run the following

command to verify that the port h is closed:

# gabconfig -a

Stop the VCSMM driver on each node:

# /sbin/init.d/vcsmm stop

Troubleshooting SF Oracle RAC

Troubleshooting I/O fencing

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