Issue

We would like you to assist in diagnosing a system panic which happened today on one of our production systems called hostname. The partner node took over services correctly so the customer impact was minimal. Unfortunately there is no system dump. The system came back without problems and was joined back to the cluster already. Last messages in syslog are:

Aug 18 12:58:24 hostname kernel: lpfc 0000:05:00.1: 1:(0):2755 ADISC failure DID:128C00 Status:x3/x16
Aug 18 12:58:27 hostname kernel: lpfc 0000:05:00.1: 1:(0):2755 ADISC failure DID:129F00 Status:x3/x16
Aug 18 12:59:59 hostname kernel: lpfc 0000:05:00.1: 1:(0):2755 ADISC failure DID:128D00 Status:x3/x16
Aug 18 13:00:27 hostname kernel: lpfc 0000:05:00.0: 0:(0):2755 ADISC failure DID:5D5700 Status:x3/x16
Aug 18 13:01:28 hostname kernel: lpfc 0000:05:00.1: 1:(0):2755 ADISC failure DID:129E00 Status:x3/x16
Aug 18 13:01:55 hostname kernel: lpfc 0000:05:00.0: 0:(0):2755 ADISC failure DID:5D5800 Status:x3/x16
Aug 18 13:02:27 hostname kernel: lpfc 0000:05:00.1: 1:(0):2755 ADISC failure DID:129D00 Status:x3/x16
Aug 18 13:02:44 hostname kernel: lpfc 0000:05:00.1: 1:(0):2755 ADISC failure DID:128E00 Status:x3/x16
Aug 18 13:27:53 hostname syslogd 1.4.1: restart.

Those lpfc ADISC error messages are known to us. They are all related to tape issues we have currently and are visible in syslogs of many RHEL5 and RHEL6 systems.
They are only reported for adapter ports 0000:05:00.0 and 0000:05:00.1 which are dedicated to tape access.
For disk access we have other 4 dedicated FC adapter ports on different HBAs.

There are no other messages in syslog nor ILO logs. The only other hint we have is a screen capture of the console which I will attach to this record.