Veritas Storage Foundation 5.1 SP1 for Oracle RAC Release Notes (5900-1513, April 2011)

Workaround: This message may be safely ignored.
CVMVolDg agent may fail to deport CVM disk group
The CVM disk group is deported based on the order in which the CVMVolDg
resources are taken offline. If the CVMVolDg resources in the disk group contain
a mixed setting of 1 and 0 for the CVMDeportOnOffline attribute, the disk group
is deported only if the attribute value is 1 for the last CVMVolDg resource taken
offline. If the attribute value is 0 for the last CVMVolDg resource taken offline,
the disk group is not deported.
Workaround: If multiple CVMVolDg resources are configured for a shared disk
group, set the value of the CVMDeportOnOffline attribute to 1 for all of the
resources.
Deporting issues with shared disk groups
If you manually deport a shared disk group, the CVMVolDg agent does not
automatically reimport it as a shared disk group. You must manually reimport it
as a shared disk group.
Stopping cluster nodes configured with I/O fencing
The I/O fencing feature protects against data corruption resulting from a failed
cluster interconnect or “split brain.”
For more information, see Veritas Cluster Server User’s Guide.
I/O fencing uses SCSI-3 Persistent Reservation keys to implement data protection.
The software places keys on I/O fencing coordinator and data disks. The
administrator must be aware of several operational changes needed when working
with clusters protected by I/O fencing. Specific shutdown procedures ensure keys
are removed from coordinator disks and data disks to prevent possible difficulties
with subsequent cluster startup. Using the reboot command rather than the
shutdown command bypasses shutdown scripts and can leave keys on the
coordinator and data disks. Depending on the order of reboot and subsequent
startup events, the cluster might warn of a possible split brain condition and fail
to start up.
Workaround: Use the shutdown command instead of the reboot command to
perform a graceful reboot for systems.
# /usr/sbin/shutdown -r now
43Storage Foundation for Oracle RAC Release Notes
Known issues