How do I start and manage DLM in a RHEL 7 pacemaker cluster? - Red Hat Customer Portal

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Issue

dlm_controld and the DLM module used to be loaded by cman during boot. How do I have it loaded automatically on startup in a RHEL 7 pacemaker cluster?
I have LVM2, GFS2, or other resources that depend on DLM. How can I configure them such that this dependency is enforced, and DLM is started and ready before these resources are started?

Environment

Red Hat Enterprise Linux (RHEL) 7 with the Resilient Storage Add On
lvm2-cluster (clvmd), GFS2, or other resources that require the Distributed Lock Manager (DLM)
pacemaker

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