Using Serviceguard Extension for RAC, 7th Edition, September 2008
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
Edit Cluster file
2. Create the Cluster
# cmapplyconf -C clm.asc
• Start the Cluster
# cmruncl
# cmviewcl
The following output will be displayed:
CLUSTER STATUS
ever3_cluster up
NODE STATUS STATE
ever3a up running
ever3b up running
3. Configure the Cluster Volume Manager (CVM)
Configure the system multi-node package, SG-CFS-pkg, to configure and start the CVM
stack. Unlike VxVM-CVM-pkg, the SG-CFS-pkg does not restrict heartbeat subnets to a
single subnet and supports multiple subnets.
Use the cmapplyconf command:
# cmapplyconf -P /etc/cmcluster/cfs/SG-CFS-pkg.conf
# cmrunpkg SG-CFS-pkg
When CVM starts up, it selects a master node, which 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
The following output will be displayed:
mode: enabled: cluster active - SLAVEmaster: ever3b
or
mode: enabled: cluster active - MASTERslave: ever3b
• 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 the volume group must be halted. This procedure is described in the
Managing Serviceguard Fifteenth Edition user’s guide Appendix G.
• Initializing Disks for CVM
It is necessary 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).
58 Serviceguard Configuration for Oracle 10g RAC