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

5
Validate the new disk group for I/O fencing compliance. Run the following
command:
# vxfentsthdw -c vxfendg
See “Testing the coordinator disk group using vxfentsthdw -c option”
on page 109.
6
If the new disk group is not already deported, run the following command to
deport the disk group:
# vxdg deport vxfendg
7
Make sure that the /etc/vxfenmode file is updated to specify the correct disk
policy.
See the Veritas Storage Foundation for Oracle RAC Installation and
Configuration Guide for more information.
8
From any node, start the vxfenswap utility. For example, if vxfendg is the
new diskgroup that you want to use as the coordinator diskgroup:
# vxfenswap -g vxfendg [-n]
The utility performs the following tasks:
■ Backs up the existing /etc/vxfentab file.
■ Creates a test file /etc/vxfentab.test for the diskgroup that is modified on
each node.
■ Reads the diskgroup you specified in the vxfenswap command and adds
the diskgroup to the /etc/vxfentab.test file on each node.
■ Verifies that the serial number of the new disks are identical on all the
nodes. The script terminates if the check fails.
■ Verifies that the new disk group can support I/O fencing on each node.
9
If the disk verification passes, the utility reports success and asks if you want
to replace the coordinator disk group.
10
Review the message that the utility displays and confirm that you want to
replace the coordinator disk group. Else skip to step 13.
Do you wish to commit this change? [y/n] (default: n) y
If the utility successfully commits, the utility moves the /etc/vxfentab.test
file to the /etc/vxfentab file.
The utility also updates the /etc/vxfendg file with this new diskgroup.
127Administering SF Oracle RAC and its components
Administering I/O fencing