cman service delays or hangs when "Starting fencing" in RHEL 5

Solution Unverified - Updated -

Issue

  • When I start the cman service either manually or during boot, it stalls or hangs indefinitely on "Starting fencing"
# service cman start  
Starting cluster:  
 Loading modules... done  
 Mounting configfs... done  
 Starting ccsd... done  
 Starting cman... done  
 Starting qdiskd... done  
 Starting daemons... done  
 Starting fencing...
  • 2-node cluster rebooted, both nodes hang on fencing
  • Node does not join the fence domain on boot, but they seem to be able to communicate shortly after fencing fails

Environment

  • Red Hat Enterprise Linux 5 (RHEL) with the High Availability Add On

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