How do I start and manage clvmd and cmirrord in a pacemaker cluster?

Solution Verified - Updated -

Issue

  • How do I start clvmd and cmirrord?
  • I'm not able to find any systemd services for clvmd or cmirrord
# systemctl start cmirror.service
Failed to issue method call: Unit cmirror.service failed to load: No such file or directory.
# systemctl start clvmd.service
Failed to issue method call: Unit clvmd.service failed to load: No such file or directory.
  • RHEL 7 is missing startup scripts for daemons like clvmd and cmirrord that existed in RHEL 5 and 6
  • Unable to start clvmd in pacemaker cluster

Environment

  • Red Hat Enterprise Linux (RHEL) 7 with the Resilient Storage Add On
  • Red Hat Enterprise Linux (RHEL) 6 with the Resilient Storage Add On
  • pacemaker
  • A need exists for LVM2 logical volumes shared by multiple cluster nodes
    • Optionally: A need exists for these volumes to be mirrored across redundant storage devices

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