dlm is failing to start. The reported error is "dlm_controld cannot find device /dev/misc/dlm-control with minor ...".

Solution Verified - Updated -

Issue

RHEL 8
dlm cluster resource is failing to start

Jun 13 01:50:55 node1 dlm_controld[2296404]: 922347 dlm_controld 4.1.0 started
Jun 13 01:51:05 node1 dlm_controld[2296404]: 922357 cannot find device /dev/misc/dlm-control with minor 123  <<---
Jun 13 01:51:05 node1 pacemaker-controld[1781010]:  notice: Result of start operation for dlm on node1: not running

RHEL 7
dlm cluster resource is failing to start

Sep 18 20:26:32 node1 dlm_controld[22956]: 112456 dlm_controld 4.0.7 started
Sep 18 20:26:32 node1 dlm_controld[22956]: 112456 cannot find device /dev/misc/dlm-control with minor 57    <<----
Sep 18 20:26:32 node1 crmd[10235]:  notice: Result of start operation for dlm on node1: 7 (not running)

Environment

  • Red Hat Enterprise Linux (RHEL) 7, 8 with the Resilient Storage Add Ons

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