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

Serviceguard Configuration for Oracle 10g RAC
Creating a Storage Infrastructure with CVM
Chapter 2 79
Creating Disk Groups 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 c0t3d2
Verify the configuration with the following command:
# vxdg list
NAME STATE ID
rootdg enabled 971995699.1025.node1
ops_dg enabled,shared 972078742.1084.node2
Creating Volumes
Use the vxassist command to create logical volumes. The following is
an example:
# vxassist -g ops_dg make log_files 1024m
This command creates a 1024 MB volume named log_files in a disk
group named ops_dg. The volume can be referenced with the block device
file /dev/vx/dsk/ops_dg/log_files or the raw (character) device file
/dev/vx/rdsk/ops_dg/log_files.
Verify the configuration with the following command:
# vxdg list
IMPORTANT After creating these files, use the vxedit command to change the
ownership of the raw volume files to oracle and the group membership
to dba, and to change the permissions to 660. Example:
# cd /dev/vx/rdsk/ops_dg
# vxedit -g ops_dg set user=oracle *
# vxedit -g ops_dg set group=dba *
# vxedit -g ops_dg set mode=660 *
The logical volumes are now available on the primary node, and the raw
logical volume names can now be used by the Oracle DBA.