Using Serviceguard Extension for RAC, 8th Edition, March 2009

Stopping CVM...CVM is stopped
# cfscluster unconfig
The following output will be displayed:
CVM is now unconfigured
Creating a Storage Infrastructure with CVM
In addition to configuring the cluster, you create the appropriate logical volume infrastructure
to provide access to data from different nodes.
This is done with Logical Volume Manager (LVM), Veritas Volume Manager (VxVM), or Veritas
Cluster Volume Manager (CVM). LVM and VxVM configuration are done before cluster
configuration, and CVM configuration is done after cluster configuration (on HP-UX releases
that support Veritas CFS and CVM; see “About Veritas CFS and CVM from Symantec” (page 18)).
This section shows how to configure storage using the Veritas Cluster Volume Manager (CVM).
The examples show how to configure RAC disk groups, but you can also create CVM disk groups
for non-RAC use. For more information, including details about configuration of plexes (mirrors),
multi-pathing, and RAID, refer to the HP-UX documentation for the Veritas Volume Manager.
Initializing the Veritas Volume Manager
If you are about to create disk groups for the first time, you need to initialize the Volume Manager.
This is done by creating a disk group known as rootdg that contains at least one disk. Use the
following command after installing CVM on each node:
# vxinstall
This displays a menu-driven program that steps you through the CVM initialization sequence.
From the main menu, choose the “Custom” option, and specify the disk you wish to include in
rootdg.
IMPORTANT: Creating a rootdg disk group is only necessary the first time you use the Volume
Manager. CVM 4.1 or later does not require a rootdg.
Using CVM 4.x or later
This section has information on how to set up the cluster and the system multi-node package
with CVM (without the CFS filesystem); (on HP-UX releases that support them; see “About
Veritas CFS and CVM from Symantec” (page 18)).
Preparing the Cluster and the System Multi-node Package for use with CVM 4.x or later
The following steps describe how to prepare the cluster and the system multi-node package with
CVM 4.x or later only.
1. Create the Cluster file:
# cd /etc/cmcluster
# cmquerycl -C clm.asc -n ever3a -n ever3b
Creating a Storage Infrastructure with CVM 59