Loss of quorum on remaining cluster node after other node fenced in RHEL 5

Issue

• We were testing fencing with fence_ipmilan and when the other node powered off, the remaining node (where we were running the test from) lost quorum:

# fence_ipmilan -a 192.168.2.10 -l fence -p administrator -P
Rebooting machine @ IPMI:192.168.2.10...Done
# 
Message from syslogd@ at Mon Apr 15 10:38:45 2013 ...
node1 clurgmgrd[28655]: <emerg> #1: Quorum Dissolved 

• clustat reported "Operation requires quorum" when the second node of my two-node + qdisk cluster was down:

# clustat
Service states unavailable: Operation requires quorum
Cluster Status for Stage_GCC @ Mon Apr 15 10:40:50 2013
Member Status: Inquorate

 Member Name                                    ID   Status
 ------ ----                                    ---- ------
 node1.example.com                                  1 Online, Local
 node2.example.com                                  2 Offline

• clustat is not showing the quorum device in my cluster