Red Hat Enterprise Linux 5 cluster node configured with fence_scsi reports SCSI reservation conflicts and during boot reports "scsi_reserve: [error] cman does not appear to be running"
Issue
scsi_reservereports "cman does not appear to be running" in/var/log/messagesduring boot, and later there are SCSI reservation conflicts:
Apr 2 11:16:37 node1 scsi_reserve: [error] cman does not appear to be running
- When mounting file systems on shared storage on a cluster node configured with
fence_scsi, the mount attempt fails and there are SCSI reservation conflicts in the logs:
# service gfs2 start
Mounting GFS2 filesystems: /sbin/mount.gfs2: mount point already used or other mount in progress
/sbin/mount.gfs2: error mounting lockproto lock_dlm
[FAILED]
Apr 2 12:41:57 node1 kernel: sd 6:0:0:23: reservation conflict
Apr 2 12:41:57 node1 multipathd: 71:16: reinstated
Apr 2 12:41:57 node1 kernel: sd 6:0:0:23: Unhandled error code
Apr 2 12:41:57 node1 multipathd: 360050768018186abf800000000000142: remaining active paths: 1
Environment
- Red Hat Enterprise Linux (RHEL) 5 with the High Availability Add On
- One or more nodes configured to use SCSI Persistent Reservation Fencing (
fence_scsi) - Either
cmanorscsi_reservechkconfig'd off- This issue is not applicable if both are enabled to start on boot
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