Cluster filesystems like GFS2 require a lock manager. This service starts the daemon that provides user-space applications (such as the GFS2 daemon) with access to the in-kernel lock manager. Since we need it to be available on all nodes in the cluster, we have it cloned.
primitive dlm ocf:pacemaker:controld \
op monitor interval="120s"
clone dlm-clone dlm \
meta interleave="true
Note
TODO: Confirm interleave
is no longer needed