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

NOTE: The specific commands for creating mirrored and multi-path storage using CVM are
described in the HP-UX documentation for the Veritas Volume Manager.
Using CVM 3.x
This section has information on how to prepare the cluster with CVM 3.x (on HP-UX releases
that support Veritas CFS and CVM; see “About Veritas CFS and CVM from Symantec” (page 18)).
Preparing the Cluster for Use with CVM 3.x
In order to use the Veritas Cluster Volume Manager (CVM) version 3.5, the cluster must be running
with a special CVM package. This means that the cluster must already be configured and running
before you create disk groups.
NOTE: Cluster configuration is described in the previous section.
To prepare the cluster for CVM disk group configuration, you need to ensure that only one
heartbeat subnet is configured. Then use the following command, which creates the special
package that communicates cluster information to CVM:
# cmapplyconf -P /etc/cmcluster/cvm/VxVM-CVM-pkg.conf
WARNING! The above file should never be edited.
After the above command completes, start the cluster and create disk groups for shared use as
described in the following sections.
Starting the Cluster and Identifying the Master Node
Run the cluster, which will activate the special CVM package:
# cmruncl
After the cluster is started, it will now run with a special system multi-node package named
VxVM-CVM-pkg, which is on all nodes. This package is shown in the following output of the
cmviewcl -v command:
CLUSTER STATUS
bowls up
NODE STATUS STATE
spare up running
split up running
strike up running
SYSTEM_MULTI_NODE_PACKAGES:
PACKAGE STATUS STATE
VxVM-CVM-pkg up running
When CVM starts up, it selects a master node, and this is the node from which you must issue
the disk group configuration commands. To determine the master node, issue the following
command from each node in the cluster:
# vxdctl -c mode
One node will identify itself as the master. Create disk groups from this node.
Converting Disks from LVM to CVM
Use the vxvmconvert utility to convert LVM volume groups into CVM disk groups. Before
you can do this, the volume group must be deactivated, which means that any package that uses
100 Serviceguard Configuration for Oracle 9i RAC