Using Serviceguard Extension for RAC, 3rd Edition, May 2006

Serviceguard Configuration for Oracle 9i RAC
Creating a Storage Infrastructure with CVM
Chapter 3138
# 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 - SLAVE
master: 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 Thirteenth Edition user’s guide
Appendix G.
• 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:
# /etc/vx/bin/vxdisksetup -i c4t4d0
• Create the Disk Group for RAC
Use the vxdg command to create disk groups. Use the -s option
to specify shared mode, as in the following example:
# vxdg -s init ops_dg c4t4d0
4. Creating Volumes and Adding a Cluster Filesystem
# vxassist -g ops_dg make vol1 10240m