VCS and scsi reservations

Solution Verified - Updated -

Issue

  • Why do I see scsi resets, unhandled errors, and scsi reservations while using Symantec's VCS cluster?
kernel: lpfc 0000:03:00.0: 0:(0):0713 SCSI layer issued Device Reset (1, 32) return x2002
kernel: sd 0:0:0:19: [sdt] Unhandled error code
kernel: sd 0:0:0:19: [sdt] Result: hostbyte=DID_REQUEUE driverbyte=DRIVER_OK
kernel: sd 0:0:0:19: [sdt] CDB: Read(10): 28 00 0b 09 db 90 00 04 00 0

kernel: sd 3:0:0:1: reservation conflict
kernel: sd 3:0:0:1: reservation conflict
kernel: sd 3:0:1:2: reservation conflict
kernel: sd 3:0:1:2: reservation conflict
kernel: sd 3:0:0:3: reservation conflict
kernel: sd 3:0:0:3: reservation conflict

Environment

  • Red Hat Enterprise Linux 6
  • Symantec's VCS (vers. ~)

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