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

412 Administering cluster functionality
Administering VxVM in cluster environments
Converting a disk group from shared to private
Note: Shared disk groups can only be deported on the master node.
To convert a shared disk group to a private disk group, first deport it on the master node
using this command:
# vxdg deport diskgroup
Then reimport the disk group on any cluster node using this command:
# vxdg import diskgroup
Moving objects between disk groups
As described in “Moving objects between disk groups” on page 195, you can use the vxdg
move command to move a self-contained set of VxVM objects such as disks and top-level
volumes between disk groups. In a cluster, you can move such objects between private
disk groups on any cluster node where those disk groups are imported.
Note: You can only move objects between shared disk groups on the master node. You
cannot move objects between private and shared disk groups.
Splitting disk groups
As described in “Splitting disk groups” on page 197, you can use the vxdg split
command to remove a self-contained set of VxVM objects from an imported disk group,
and move them to a newly created disk group.
Splitting a private disk group creates a private disk group, and splitting a shared disk
group creates a shared disk group. You can split a private disk group on any cluster node
where that disk group is imported. You can only split a shared disk group or create a
shared target disk group on the master node.
See “Moving objects between disk groups” on page 195.
Joining disk groups
As described in “Joining disk groups” on page 198, you can use the vxdg join command
to merge the contents of two imported disk groups. In a cluster, you can join two private
disk groups on any cluster node where those disk groups are imported.
If the source disk group and the target disk group are both shared, you must perform the
join on the master node.
Note: You cannot join a private disk group and a shared disk group.