How to Test Nodes Using a Power-Off Method

Before You Begin

To perform these tests, you must first identify the device groups that each node masters. Perform these tests on all cluster pairs that share a disk device group. Each pair has a primary and a secondary for a particular device group. Use the scstat(1M) command to determine the initial primary and secondary.

1. Power off the primary node.

   Cluster interconnect error messages appear on the consoles of the existing nodes.

2. On another node, verify that the secondary took ownership of the device group that is mastered by the primary.

   Look for the output that shows the device group ownership.

   # scstat

3. Power on the initial primary. Boot the node into cluster mode.

   Wait for the system to boot. The system automatically starts the membership monitor software. The node then rejoins the Sun Cluster configuration.

4. Do you have the device group failback option enabled?

   Use the scconf -p command to determine if your device group has the device group failback option enabled.

   • If yes, skip to Step 6.

     The system boot process moves ownership of the device group back to the initial primary.

   • If no, proceed to Step 5.

5. From the initial primary, move ownership of the device group back to the initial primary.

   # scswitch -S -h nodename

6. Verify that the initial primary has ownership of the device group.

   Look for the output that shows the device group ownership.

   # scstat