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

Table 3-19
Troubleshooting I/O fencing warning messages (continued)
RecommendationPossible causesWarning
■ Configure a minimum of
three coordinator disks.
■ Add or remove
coordinators disks to
meet the odd coordinator
disk criterion. Use the
vxfenswap utility to add
or remove disks.
See “About the vxfenswap
utility” on page 122.
■ If the coordinator disk is
faulty, replace the disk
using the vxfenswap
utility.
See “About the vxfenswap
utility” on page 122.
■ I/O fencing is enabled with
only one coordinator disk.
■ The number of disks
configured for I/O fencing are
even.
VxFEN is running
with only one
coordinator disk.
Loss of this disk
will prevent
cluster
reconfiguration on
loss of a node.
Symantec recommends
configuring a
minimum of 3
coordinator disks.
VxFEN is running
with even number of
coordinator disks.
There must be odd
number of
coordinator disks.
Replace the disk
disk name using
OCDR procedure.
Refresh the key on the
coordinator disk.
For instructions:
See “Refreshing lost keys on
coordinator disks”
on page 130.
The key may have been
accidentally removed.
The coordinator
disk (disk name)
does not have the
required key for
the local node.
209Troubleshooting SF Oracle RAC
Troubleshooting I/O fencing