Problem Summary: Using the Solaris shutdown command or similar commands (for example, uadmin) to bring down a cluster node may result in node panic and display
the following message:
CMM: Shutdown timer expired. Halting.
Workaround: Contact your Sun service representative for support. The panic is necessary to provide a guaranteed safe way for another node in the cluster to take over the services that were being hosted by the shutting-down node.