I have a 2-node RHEL 4.5 cluster. I am using SCSI fencing which uses scsi-3 reservation. The 2 nodes are sharing devices on a FC storage array. I am using a single path; there is no multipath driver involved. I am also using GFS on top of LVM volumes.
When I shutdown one of the nodes, the cluster does not send any commands to the storage array to clear out the persistent reservations for that node. This causes the resources not to fail correctly to the other node since it cannot break the reservation done by the dead node. My questions are:
1. Is that a known issue?
2. Is there a way to turn some kind of debugging on the cluster that will allow me to watch if any scsi PRIN/PROUT commands are sent to the storage devices?