dlm_controld waits for fencing which will never occur causing hang

Solution Verified - Updated -

Issue

  • GFS2 filesystem hang
  dlm_controld[3961]: 19846744 clvmd wait for fencing 
  • DLM will block indefinitely until the node is rebooted.

Environment

  • Red Hat Enterprise Linux 7 with the Resilient Storage Add On
  • pacemaker
  • GFS2 (Global Filesystem 2)

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