Pacemaker Filesytem resource monitor fails after Vormetric encryption is started

Issue

• When the Vormetric encryption software is started on a pacemaker cluster Filesystem resource, the monitor operations fails with:

  warning: Unexpected result (not configured: Another device (/dev/mapper/clustervg-clusterlv) was recorded for monitor of clusterfs on nodea at Jun 16 12:00:00 2025 | exit-status=6 id=clusterfs_last_failure_0
  

• When trying to debug-monitor the resource, the /proc/mounts shows the filesystem mounted twice, one by the cluster and the other by the encryption which causes the failure on newer resource-agents versions:

  # pcs resource debug-monitor clusterfs --full
  Operation force-check for clusterfs (ocf:heartbeat:Filesystem) returned 7 (not running)
  --------------------------------------
  ++ 12:00:00: list_mounts:354: mount_list='proc  /proc   proc
  /dev/mapper/clustervg-clusterlv   /clusterfs   xfs
  /clusterfs   /clusterfs   secfs2'
  --------------------------------------
  + 12:00:00: Filesystem_status:815: local 'mounted_device=/dev/mapper/clustervg-clusterlv /clusterfs'
  + 12:00:00: Filesystem_status:817: '[' -n '/dev/mapper/clustervg-clusterlv /clusterfs' ']'
  + 12:00:00: Filesystem_status:818: '[' Xyes = Xyes ']'
  + 12:00:00: Filesystem_status:819: '[' -e /dev/clustervg/clusterlv ']'
  ++ 12:00:00: Filesystem_status:820: readlink -f /dev/clustervg/clusterlv
  + 12:00:00: Filesystem_status:820: local canonicalized_device=/dev/dm-2
  + 12:00:00: Filesystem_status:821: '[' 0 -ne 0 ']'
  + 12:00:00: Filesystem_status:828: '[' -e '/dev/mapper/clustervg-clusterlv /clusterfs' ']'
  + 12:00:00: Filesystem_status:835: local 'canonicalized_mounted_device=/dev/mapper/clustervg-clusterlv /clusterfs'
  + 12:00:00: Filesystem_status:837: '[' /dev/dm-2 '!=' '/dev/mapper/clustervg-clusterlv /clusterfs' ']'
  + 12:00:00: Filesystem_status:838: ocf_is_probe
  + 12:00:00: ocf_is_probe:555: '[' monitor = monitor -a 0 = 0 ']'
  + 12:00:00: Filesystem_status:839: ocf_log debug 'Another device (/dev/mapper/clustervg-clusterlv /clusterfs) is already mounted on /clusterfs'