Symantec Veritas Cluster Server One, Installation Manual

Page: 100 / 210

100 Adding shared storage and testing disks for SCSI-3 compliance
Setting up and testing data disks
Setting up and testing data disks
Verify that each disk you added for use as a data disk supports SCSI-3 persistent
reservations and I/O fencing. Use the
vxfentsthdw
utility to verify that the
storage you added supports SCSI-3 persistent reservations. The procedure may
destroy data on the disk.
Note: If the disks you want to test have data on them that you want to preserve,
use the -r (read-only) option of vxfentsthdw. Be advised that, with the -r option,
not all SCSI-3 compliance tests are run.
When you run the utility, you are prompted for:
■ The names of two systems connected to the storage disks.
■ The name of the disk as it is displayed on each system. A given disk may
have a different name on each system.
To test data disks using vxfentsthdw
1 Make sure the two systems are connected to the storage device you are
testing, and that the systems are running the same operating system.
2 Ensure that both systems have mutual connectivity via rsh or ssh
communications.
3 Start
vxfentsthdw
. Enter the following. If you are using ssh, omit the
-n
option:
/opt/VRTSvcsone/vxfen/bin/vxfentsthdw -n
4 At the prompts, provide the required information. If the test succeeds, the
following information is displayed:
The disk /dev/ disk_name is ready to be configured for I/O
Fencing on node name_of_first_node
The disk /dev/ disk_name is ready to be configured for I/O
Fencing on node name_of_second_node
If the testing does not display a message that the disk is ready to be
configured for I/O fencing, the disk has failed the testing.
5 Repeat this test on all shared data disks connected to the system.