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

The vxfentsthdw utility fails when SCSI TEST UNIT READY command
fails
While running the vxfentsthdw utility, you may see a message that resembles as
follows:
Issuing SCSI TEST UNIT READY to disk reserved by other node
FAILED.
Contact the storage provider to have the hardware configuration
fixed.
The disk array does not support returning success for a SCSI TEST UNIT READY
command when another host has the disk reserved using SCSI-3 persistent
reservations. This happens with the Hitachi Data Systems 99XX arrays if bit 186
of the system mode option is not enabled.
Node is unable to join cluster while another node is being ejected
A cluster that is currently fencing out (ejecting) a node from the cluster prevents
a new node from joining the cluster until the fencing operation is completed. The
following are example messages that appear on the console for the new node:
...VxFEN ERROR V-11-1-25 ... Unable to join running cluster
since cluster is currently fencing
a node out of the cluster.
If you see these messages when the new node is booting, the vxfen startup script
on the node makes up to five attempts to join the cluster.
To manually join the node to the cluster when I/O fencing attempts fail
◆
If the vxfen script fails in the attempts to allow the node to join the cluster,
restart vxfen driver with the command:
# /sbin/init.d/vxfen stop
# /sbin/init.d/vxfen start
If the command fails, restart the new node.
System panics to prevent potential data corruption
When a node experiences a split-brain condition and is ejected from the cluster,
it panics and displays the following console message:
VXFEN:vxfen_plat_panic: Local cluster node ejected from cluster to
prevent potential data corruption.
Troubleshooting SF Oracle RAC
Troubleshooting I/O fencing
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