Managing Serviceguard Sixteenth Edition, March 2009

the Veritas Installation Guide for your version. For more information, refer to the
Veritas Volume Manager Administrator’s Guide for your version.
Separate procedures follow for:
• Initializing the Volume Manager
• Preparing the Cluster for Use with CVM
• Creating Disk Groups for Shared Storage
For more information, including details about configuration of plexes (mirrors),
multipathing, and RAID, refer to the HP-UX documentation for the Veritas Volume
Manager. See the documents for HP Serviceguard Storage Management Suite posted
at http://docs.hp.com.
Initializing the Veritas Volume Manager
If you are about to create disk groups for the first time, you need to initialize the Volume
Manager.
Use the following command after installing VxVM/CVM on each node:
vxinstall
This displays a menu-driven program that steps you through the VxVM/CVM
initialization sequence.
• If you are using CVM 3.5, you must create a disk group known as rootdg that
contains at least one disk. From the main menu, choose the “Custom” option, and
specify the disk you wish to include in rootdg.
IMPORTANT: The rootdg in version 3.5 of Veritas Volume Manager is not the
same as the HP-UX root disk if an LVM volume group is used for the HP-UX root
filesystem (/). Note also that rootdg cannot be used for shared storage. However,
rootdg can be used for other local filesystems (e.g., /export/home), so it need
not be wasted.
Note that you should create a root disk group only once on each node.
• CVM 4.1 and later do not require that you create the special Veritas rootdg disk.
Preparing the Cluster for Use with CVM
In order to use the Veritas Cluster Volume Manager (CVM), you need a cluster that is
running with a Serviceguard-supplied CVM system multi-node package. This means
that the cluster must already be configured and running before you create disk groups.
Configure system multi-node and multi-node packages using the command line, not
Serviceguard Manager. Once configured, these cluster-wide packages’ properties have
a special tab under Cluster Properties.
242 Building an HA Cluster Configuration