[Pacemaker] very slow pacemaker/corosync shutdown

[David Lang]

I have been using heartbeat for many years, but am now setting up some new 
clusters with pacemaker/corosync. I'm not sure which component is having 
problems so I'm sending to both lists.

These are two machine clusters, configured per the RHEL quickstart on 
clusterlabs.org

I'm frequently running into a problem that shutting down pacemaker/corosync 
takes a very long time (several minutes)

this happens if we do 'service pacemaker stop' or just reboot the system.

If we do service pacemaker stop, it seems to pause at different places at 
different times, but frequently seems to pause at 'unloading cluster'

What's the best way to see what it's getting stuck doing? Is there a good way to 
tell if this is a pacemaker or corosync problem (so I can drop one of the lists 
from the thread)?

David Lang