file system resource does not fail its status checks after a file system has failed and remounted read-only in a RHEL 6 Update 6 High Availability cluster with rgmanager

Issue

• After updating to RHEL 6 Update 6, when I pull a fiber cable to test the cluster's reaction, our fs resource never fails its status checks even though the file system has remounted read-only.

# tail -f /var/log/messages
Jan 19 10:42:44 rhel6-node1 rgmanager[2836]: Service service:fstest started
[...]
Jan 19 10:43:05 rhel6-node1 multipathd: mpathc: remaining active paths: 0
Jan 19 10:43:31 rhel6-node1 multipathd: mpathc: Disable queueing
Jan 19 10:43:31 rhel6-node1 kernel: Buffer I/O error on device dm-3, logical block 131584
Jan 19 10:43:31 rhel6-node1 kernel: lost page write due to I/O error on dm-3
Jan 19 10:43:31 rhel6-node1 kernel: JBD: I/O error detected when updating journal superblock for dm-3.
Jan 19 10:43:31 rhel6-node1 kernel: Aborting journal on device dm-3.
Jan 19 10:43:31 rhel6-node1 kernel: Buffer I/O error on device dm-3, logical block 131584
Jan 19 10:43:31 rhel6-node1 kernel: lost page write due to I/O error on dm-3
Jan 19 10:43:31 rhel6-node1 kernel: JBD: I/O error detected when updating journal superblock for dm-3.
Jan 19 10:43:39 rhel6-node1 kernel: EXT3-fs (dm-3): error: ext3_journal_start_sb: Detected aborted journal
Jan 19 10:43:39 rhel6-node1 kernel: EXT3-fs (dm-3): error: remounting filesystem read-only

[root@rhel6-node1 ~]# tail -f /var/log/cluster/rgmanager.log
Jan 19 10:41:11 rgmanager Starting changed resources.
Jan 19 10:42:44 rgmanager Starting disabled service service:fstest
Jan 19 10:42:44 rgmanager [fs] mounting /dev/dm-3 on /mnt/testmnt
Jan 19 10:42:44 rgmanager [fs] mount -t ext3  /dev/dm-3 /mnt/testmnt
Jan 19 10:42:44 rgmanager Service service:fstest started
Jan 19 10:42:59 rgmanager [fs] Checking fs "mpathc", Level 20
Jan 19 10:43:09 rgmanager [fs] Checking fs "mpathc", Level 20
Jan 19 10:43:19 rgmanager [fs] Checking fs "mpathc", Level 20
Jan 19 10:43:29 rgmanager [fs] Checking fs "mpathc", Level 20
Jan 19 10:43:39 rgmanager [fs] Checking fs "mpathc", Level 20
Jan 19 10:43:49 rgmanager [fs] Checking fs "mpathc", Level 20
Jan 19 10:43:59 rgmanager [fs] Checking fs "mpathc", Level 20

• fs write tests during the status checks are incorrectly succeeding after a file system has failed