Using Serviceguard Extension for RAC, 8th Edition, March 2009

4. Creating Volumes and Adding a Cluster Filesystem
# vxassist -g ops_dg make vol1 10240m
#vxassist -g ops_dg make vol2 10240m
# vxassist -g ops_dg make vol3 300m
5. View the Configuration
# cmviewcl
CLUSTER STATUS
ever3_cluster up
NODE STATUS STATE
ever3a up running
ever3b up running
MULTI_NODE_PACKAGES
PACKAGE STATUS STATE AUTO_RUN SYSTEM
SG-CFS-pkg up running enabled yes
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.
Mirror Detachment Policies with CVM
The required CVM disk mirror detachment policy is ‘global’, which means that as soon as one
node cannot see a specific mirror copy (plex), all nodes cannot see it as well. The alternate policy
is ‘local’, which means that if one node cannot see a specific mirror copy, then CVM will deactivate
access to the volume for that node only.
This policy can be re-set on a disk group basis by using the vxedit command, as follows:
# vxedit set diskdetpolicy=global <DiskGroupName>
NOTE: The specific commands for creating mirrored and multi-path storage using CVM are
described in the HP-UX documentation for the Veritas Volume Manager.
Using CVM 3.x
This section has information on how to prepare the cluster and the system multi-node package
with CVM 3.x; (on HP-UX releases that support them; see “About Veritas CFS and CVM from
Symantec” (page 18)).
Preparing the Cluster for Use with CVM 3.x
In order to use the Veritas Cluster Volume Manager (CVM) version 3.x, the cluster must be
running with a special CVM package. This means that the cluster must already be configured
and running before you create disk groups.
Creating a Storage Infrastructure with CVM 61