Takeover or giveback failures

Check the Channel B cabling on the disk shelves, and tighten any loose cables.

Check the cabling to your cluster adapters, making sure that the cabling is correct, that the cables are properly seated in the adapters, and that the cables are secured to the adapters.

Check communication between the nodes by entering the following command:

cf status

Result

If there is a cabling error or the interconnect link is down, the system displays an error message indicating the error.

Check the licenses on the local and partner nodes. Both nodes must have the cluster license enabled.

Add missing licenses.

Check network connectivity.

See the appropriate System Administration guide for more information.

Reboot the cluster and rerun the takeover and giveback tests.

If you still do not have clustering enabled, call Customer Support.

Check communication between the local and partner nodes by entering the following command and observing the messages:

cf status

Result

If there is a problem with cabling or the adapter, the appropriate message is displayed. Recable or replace the cluster adapter, as needed.

If the error message indicates...

Then...

A cluster adapter error

Check the cluster adapter cabling. Make sure that the cabling is correct and properly seated at both ends of the cable.

That the NVRAM5 adapter is in the wrong slot number

Check the NVRAM5 slot number. Move it to the correct slot if it is in the wrong one.

A Channel B cabling error

Check the cabling of the Channel B disk shelf loops and reseat and tighten any loose cables.

A networking error

Check for network connectivity.

See the System Administration Guides for more information.

Run the cluster configuration checker script, as described in Setting options and parameters with the cluster configuration checker.

Correct any errors or differences displayed in the output.

Reboot the cluster and rerun the takeover and giveback tests.

If you still do not have clustering enabled, call Customer Support.