Error "kernel: zfcp 0.0.xxx: There is no light signal from the local fibre channel cable"
Issue
- Server in hung state and gives the below errors in /var/log/messages:
$ less /var/log/messages
22:08:31 servera kernel: zfcp 0.0.XXX: There is no light signal from the local fibre channel cable <=====
.
.
22:08:36 servera kernel: sd X:X:X:1: rejecting I/O to offline device
22:08:36 servera kernel: sd X:X:X:1: rejecting I/O to offline device
22:08:36 servera kernel: sd X:X:X:2: rejecting I/O to offline device
22:08:36 servera kernel: sd X:X:X:2: [sdx] killing request
22:08:36 servera kernel: sd X:X:X:2: rejecting I/O to offline device
22:08:36 servera kernel: sd X:X:X:X: rejecting I/O to offline device
22:08:36 servera kernel: sd X:X:X:X: [sdXXX] killing request
22:08:36 servera kernel: sd X:X:X:X: rejecting I/O to offline device
22:08:36 servera kernel: sd X:X:X:X: [sdXXX] killing request
22:08:36 servera kernel: sd X:X:X:X: [sdXXXX] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
22:08:36 servera kernel: sd X:X:X:X: [sdXXX] CDB: Read(10):
Environment
- Red Hat Enterprise Linux
- IBM Storage
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