Veritas Volume Manager 5.0 Administrator's Guide (September 2006)

505Configuring Veritas Volume Manager
Configuring cluster support
5 From the master node only, use vxassist or VEA to create volumes in the disk
groups.
Note: RAID-5 volumes are not supported for sharing in a cluster.
6 If the cluster is only running with one node, bring up the other cluster nodes. Enter
the vxdg list command on each node to display the shared disk groups.
Converting existing VxVM disk groups to shared disk groups
To convert existing disk groups to shared disk groups:
1 Start the cluster on one node only to prevent access by other nodes.
2 Configure the disk groups using the following procedure.
To list all disk groups, use the following command:
# vxdg list
To deport the disk groups that are to be shared, use the following command:
# vxdg deport diskgroup
To import disk groups to be shared, use the following command:
# vxdg -s import diskgroup
This procedure marks the disks in the shared disk groups as shared and stamps them
with the ID of the cluster, enabling other nodes to recognize the shared disks.
If dirty region logs exist, ensure they are active. If not, replace them with larger ones.
To display the shared flag for all the shared disk groups, use the following command:
# vxdg list
The disk groups are now ready to be shared.
3 Bring up the other cluster nodes. Enter the
vxdg list command on each node to
display the shared disk groups. This command displays the same list of shared disk
groups displayed earlier.
For information on converting disk groups in a Veritas Cluster File System (CFS)
environment, see the Veritas Cluster File System Installation and Configuration Guide.