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

■ The coordination points listed in the /etc/vxfenmode file on the different SF
Oracle RAC cluster nodes are not the same. If different coordination points
are listed in the /etc/vxfenmode file on the cluster nodes, then the operation
fails due to failure during the coordination point snapshot check.
■ There is no network connectivity from one or more SF Oracle RAC cluster
nodes to the CP server(s).
■ Cluster, nodes, or users for the SF Oracle RAC cluster nodes have not been
added on the new CP servers, thereby causing authorization failure.
Vxfen service group activity after issuing the vxfenswap command
After issuing the vxfenswap command, the Coordination Point agent reads the
details of coordination points from the vxfenconfig -l output and starts
monitoring the registrations on them.
During vxfenswap, when the vxfenmode file is being changed by the user, the
Coordination Point agent does not move to FAULTED state but continues
monitoring the old set of coordination points.
As long as the changes to vxfenmode file are not committed or the new set of
coordination points are not re-elected in vxfenconfig -l output, the Coordination
Point agent continues monitoring the old set of coordination points it read from
vxfenconfig -l output in every monitor cycle.
The status of the Coordination Point agent (either ONLINE or FAULTED) depends
upon the accessibility of the coordination points, the registrations on these
coordination points, and the fault tolerance value.
When the changes to vxfenmode file are committed and reflected in the
vxfenconfig -l output, then the Coordination Point agent reads the new set of
coordination points and proceeds to monitor them in its new monitor cycle.
Troubleshooting server-based I/O fencing in mixed mode
Use the following procedure to troubleshoot a mixed I/O fencing configuration
(configuration which uses both coordinator disks and CP server for I/O fencing).
This procedure uses the following commands to obtain I/O fencing information:
■ To obtain I/O fencing cluster information on the coordinator disks, run the
following command on one of the cluster nodes:
# vxfenadm -s diskname
Any keys other than the valid keys used by the cluster nodes that appear in
the command output are spurious keys.
215Troubleshooting SF Oracle RAC
Troubleshooting I/O fencing