Using Serviceguard Extension for RAC, 6th Edition, April 2008

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
You can 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 the volume group must be halted. This procedure is described
in the Managing Serviceguard Fifteenth Edition user’s guide Appendix G.
Creating a Storage Infrastructure with CVM 77