Symantec 5 Testing the disks using vxfentsthdw utility, # /opt/VRTSvcs/vxfen/bin/vxfentsthdw

Configuring VCS clusters for data integrity 97

Preparing to configure disk-based I/O fencing

The same serial number information should appear when you enter the equivalent command on node B using the /dev/sdy path.

On a disk from another manufacturer, Hitachi Data Systems, the output is different and may resemble:

# /sbin/vxfenadm -i /dev/sdz

SCSI ID=>Host: 2 Channel: 0 Id: 0 Lun: E

Vendor	id	: HITACHI
Product id		: OPEN-3
Revision		:	0117
Serial	Number	:	0401EB6F0002

Testing the disks using vxfentsthdw utility

This procedure uses the /dev/sdx disk in the steps.

If the utility does not show a message that states a disk is ready, the verification has failed. Failure of verification can be the result of an improperly configured disk array. The failure can also be due to a bad disk.

If the failure is due to a bad disk, remove and replace it. The vxfentsthdw utility indicates a disk can be used for I/O fencing with a message resembling:

The disk /dev/sdx is ready to be configured for I/O Fencing on

node galaxy

For more information on how to replace coordinator disks, refer to the Veritas Cluster Server User's Guide.

To test the disks using vxfentsthdw utility

1Make sure system-to-system communication functions properly. See “Setting up inter-system communication” on page 44.

After you complete the testing process, remove permissions for communication and restore public network connections.

See “Removing permissions for communication” on page 103.

2From one node, start the utility. Do one of the following:

■ If you use ssh for communication:

#/opt/VRTSvcs/vxfen/bin/vxfentsthdw