cluster lock fails on one node in 3 node cluster

[Dan Deck]

One fibre channel card has failed and we have lost the lock disk link on one node.
We are planning shutting down the one node, replacing the card and re-zoning.
I know that if the path stays the same we should have no issues bringing this node back into the cluster.
What issues would I face if the path changes and we try and bring this node back into the cluster?
Thanks for any responses.

Dan

[Steven E. Protter]

Shalom Dan,

The path is likely to change.

If so:

Edit the cluster configuration file.

cmquerycl
cmcheckconf
cmapplyconf

No way around it.

SEP

[Dan Deck]

I have to ask, why you think the path would change? The card would be going back into the same slot. The only thing that is changing is the WWPN?

[Dan Deck]

Forget my response as I asked what would happen if the path changes. I guess what I was wondering is can this system join the cluster if the lock disk it knows about is not available to it?

[Stephen Doud]

A node can join a cluster even if the path to the cluster lock has changed, or the lock disk has become non-responsive for whatever reason.

The only concern is that the system might need to access the lock VG/disk if there was a heartbeat outage, in which case the node would be TOC'd by Serviceguard because it cannot participate in cluster arbitration.