Using Serviceguard Extension for RAC, 5th Edition, June 2007

Serviceguard Configuration for Oracle 10g RAC

Creating a Storage Infrastructure with CVM

Chapter 2102

# 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

mode: enabled: cluster active - MASTER

slave: 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 Fourteenth 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).

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: