HP StorageWorks XP Cluster Extension Software Administrator Guide (T1656-96035, April 2010)

2. Obtain the SCSI ID for a multipath device. Use the scsi_id command for SUSE Linux Enterprise
Server, and the hp_scsi_id command for Red Hat Enterprise Linux.
SUSE Linux Enterprise Server:
[root@node1 ]# scsi_id -guns /block/dm-21
360060e8014424600000142460000039d
Red Hat Enterprise Linux:
[root@node1]# hp_scsi_id -guns /block/dm-14
360060e8014424600000142460000039d
3. Use the multipath command to obtain the user-friendly name for the multipath device's generated
SCSI ID. In the following example, mpathq is the user-friendly name of a multipath device:
[root@node1]# multipath -ll | grep 360060e8014424600000142460000039d | awk
'{print $1}' mpathq
Configuring the pair/resync monitor
The pair/resync monitor is a service that verifies that disks are in the pair state, and resyncs them
when necessary. The pair/resync monitor determines whether the requesting server is allowed access
to the pair/resync monitor. To access the pair/resync monitor, you must update the remote access
hosts file and configure the pair/resync monitor port.
Updating the remote access hosts file
Enter the names of the remote systems in a remote access hosts file.
1. Open the /etc/opt/hpclx/conf/clxhosts file.
2. Enter each host name on a separate line.
You can leave blank lines, but do not enter comments. For example:
# cat /etc/opt/hpclx/conf/clxhosts
dcBserver
dcAserver
Configuring the pair/resync monitor port
Enter the port that the pair/resync monitor will monitor.
1. Open the /etc/services file.
Configuring XP Cluster Extension for Linux108