Issue

• Our cluster was set up using Red Hat product documentation

 Clone Set: dlm-clone [dlm]
     Started: [ node1 node2 ]
 Clone Set: clvmd-clone [clvmd]
     Started: [ node1 node2 ]
 Clone Set: GFS2fs-clone [GFS2fs]
     Stopped: [ node1 node2 ]


Resources:
 Clone: dlm-clone
  Meta Attrs: interleave=true ordered=true
  Resource: dlm (class=ocf provider=pacemaker type=controld)
   Operations: monitor interval=30s on-fail=fence (dlm-monitor-interval-30s)
               start interval=0s timeout=90 (dlm-start-interval-0s)
               stop interval=0s timeout=100 (dlm-stop-interval-0s)
 Clone: clvmd-clone
  Meta Attrs: interleave=true ordered=true
  Resource: clvmd (class=ocf provider=heartbeat type=clvm)
   Attributes: with_cmirrord=true
   Operations: monitor interval=30s on-fail=fence (clvmd-monitor-interval-30s)
               start interval=0s timeout=90 (clvmd-start-interval-0s)
               stop interval=0s timeout=90 (clvmd-stop-interval-0s)
 Clone: GFS2fs-clone
  Meta Attrs: interleave=true
  Resource:  (class=ocf provider=heartbeat type=Filesystem)
   Attributes: device=/dev/GFS2vg/GFS2lv directory=/gfs2 fstype=gfs2 options=noatime
   Operations: monitor interval=10s on-fail=fence (GFS2fs-monitor-interval-10s)
               start interval=0s timeout=60 (GFS2fs-start-interval-0s)
               stop interval=0s timeout=60 (GFS2fs-stop-interval-0s)

• The pcs status command shows the following errors regarding the GFS2 filesystems:

Failed Actions:
* GFS2fs_start_0 on node1 'not installed' (5): call=26, status=complete, exitreason='Couldn't find device [/dev/GFS2vg/GFS2lv]. Expected /dev/??? to exist',
    last-rc-change='Tue Oct 12 12:46:47 2017', queued=0ms, exec=65ms
* GFS2fs_start_0 on node2 'not installed' (5): call=26, status=complete, exitreason='Couldn't find device [/dev/GFS2vg/GFS2lv]. Expected /dev/??? to exist',
    last-rc-change='Tue Oct 12 12:46:46 2017', queued=0ms, exec=63ms

• Constraints in this cluster are:

Ordering Constraints:
  start dlm-clone then start clvmd-clone (kind:Mandatory)
Colocation Constraints:
  clvmd-clone with dlm-clone (score:INFINITY)
Ticket Constraints:

• When the cluster is started, we see that the GFS2 resource is attempted to start before DLM and/or CLVM resource is started, resulting in this error: "Filesystem(GFS2fs)[123]: WARNING: Couldn't find device [/dev/GFS2vg/GFS2lv]. Expected /dev/??? to exist"

Oct 12 12:46:47 node1 Filesystem(GFS2fs)[123]: WARNING: Couldn't find device [/dev/GFS2vg/GFS2lv]. Expected /dev/??? to exist
Oct 12 12:46:48 node1 crmd[121]:  notice: Result of start operation for dlm on node1: 0 (ok)