Restoring fast disk takeover
If PowerHA® SystemMirror® has placed a volume group in the passive-only state and the volume group has then been varied off manually, fast disk takeover has effectively been disabled for that volume group. A fallover of the owning resource group to this node will be forced to use normal disk takeover, which will require additional time.
A volume group can be varied off incorrectly as a result of manual cleanup of resources or any other time when an administrator is manually varying off volume groups.
Restore the fast disk takeover capability for a volume group on a given node by using one of the following methods:
- Stopping and restarting cluster services on the node
- Moving the owning resource group to the node. The owning resource group can then be moved back to its original location, if desired.
- Manually vary on the volume group in passive mode with the command:
varyonvg -n -C -P <volume group name>
These methods will restore the volume group to a state where fast disk takeover is again available for the given node.