Managing Serviceguard Sixteenth Edition, March 2009

PACKAGE STATUS STATE AUTO_RUN SYSTEM
VxVM-CVM-pkg up running enabled yes
NOTE: Do not edit system multi-node package configuration files, such as
VxVM-CVM-pkg.conf and SG-CFS-pkg.conf. Create and modify the configuration
using thecfs administration commands.
Starting the Cluster and Identifying the Master Node
If it is not already running, start the cluster. This will automatically activate the special
CVM package:
cmruncl
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.
Initializing Disks for CVM
You need to initialize the physical disks that will be employed in CVM disk groups. If
a physical disk has been previously used with LVM, you should use the pvremove
command to delete the LVM header data from all the disks in the volume group (this
is not necessary if you have not previously used the disk with LVM).
To initialize a disk for CVM, log on to the master node, then use the vxdiskadm
program to initialize multiple disks, or use the vxdisksetup command to initialize
one disk at a time, as in the following example:
/usr/lib/vxvm/bin/vxdisksetup -i c4t3d4
Creating Disk Groups
Use the following steps to create disk groups.
1. Use the vxdg command to create disk groups. Use the -s option to specify shared
mode, as in the following example:
vxdg -s init logdata c0t3d2
2. Verify the configuration with the following command:
vxdg list
NAME STATE ID
rootdg enabled 971995699.1025.node1
logdata enabled,shared 972078742.1084.node2
244 Building an HA Cluster Configuration