Managing Serviceguard 12th Edition, March 2006

Building an HA Cluster Configuration
Creating the Storage Infrastructure and Filesystems with VERITAS Cluster Volume Manager (CVM)
Chapter 5 251
Creating the Storage Infrastructure and
Filesystems with VERITAS Cluster Volume
Manager (CVM)
In addition to configuring the cluster, you create the appropriate logical
volume infrastructure to provide access to data from different nodes.
This can be done with Logical Volume Manager (LVM), VERITAS
Volume Manager (VxVM), or VERITAS Cluster Volume Manager (CVM)
before cluster configuration. It can also be done with CVM configuration
(with or without Cluster File System) after cluster configuration. You
can also use a mixture of volume types, depending on your needs.
See “Migrating from LVM to VxVM Data Storage” on page 457 for a
discussion of migration.
This section has information about configuring the VERITAS Cluster
Volume Manager 3.5 and 4.1 without VERITAS CFS (Cluster File
System). The configuration may be needed to set up raw devices for
Serviceguard Extension for RAC.
The previous section (“Creating a Storage Infrastructure with VERITAS
Cluster File System (CFS)” on page 240) has information about
configuring a cluster with CFS and with CVM 4.1.
Both solutions - with and without CFS - use many of the same
commands, but the processes are in a slightly different order.
Before starting, make sure the directory in which VxVM commands are
stored (/usr/lib/vxvm/bin) is in your path. Once you have created the
root disk group with vxinstall, you can use VxVM commands or the
VERITAS Storage Administrator GUI, VEA, to carry out configuration
tasks. Detailed instructions for running vxinstall are given in the
VERITAS Volume Manager Release Notes. For more information, refer to
the VERITAS Volume Manager Administrator’s Guide.
Separate procedures are given below for:
• Initializing the Volume Manager
• Preparing the Cluster for Use with CVM
• Creating Disk Groups for Shared Storage
• Creating File Systems with CVM