HP StorageWorks XP Cluster Extension Software Installation Guide (T1656-96034, April 2010)

3. Configure LVM.
For instructions, see “Configuring LVM” on page 38.
4. Install and configure the cluster software on each cluster node.
For more information, see “Installing and configuring the cluster software” on page 39.
Enabling XP RAID Manager instances
To enable XP RAID Manager instances to start at system boot, configure the /etc/init.d/raidmgr
file.
In the following example, instances 11 and 22 are enabled:
# Generic init script for RAID Manager XP provided with Cluster Extension XP
#
# Note that there are two methods by which we can start
# RAID Manager XP at boot time.
# The default method is to look for files of the form
# /etc/horcm<instance number>.conf
# and thus determine the instance numbers.
#
# However, we recommend to statically define the instances which need to be
# started, then uncomment and edit the following line:
#
RAIDMGR_INSTANCES="11 22"
...
Configuring multipath software
For information about installing and configuring the Multi-path Device Mapper for Linux Software,
see the Multi-path Device Mapper for Linux Software application and release notes. You can find
these documents on the Manuals page of the HP Business Support Center website: http://www.hp.com/
support/manuals. In the Storage Software section, click Multi-path Device Mapper for Linux Software.
To use an HBA driver's native multipath failover, follow the instructions in the documentation provided
by the manufacturer.
Load balancing affects multipath performance. To ensure optimal load balancing, see the installation
and configuration procedures in your multipath software documentation.
NOTE:
For a list of supported multipath software, see the XP array information on the HP SPOCK website:
http://www.hp.com/storage/spock.
Configuring LVM
The shared data disks used by XP Cluster Extension reside on an XP disk array that is mirrored to the
remote data center using XP Continuous Access. The P-VOLs have read/write access and the S-VOLs
have read-only access. To access disks that are in read/write mode, the P-VOL of the mirrored disk
pair must be in the local (currently active) data center.
Complete the following procedure to make each disk accessible to the nodes in the remote data
center:
Installing XP Cluster Extension Software for Linux38