Trouble, trouble, trouble …

Sep 30 06:07:12 norma kernel: 3w-9xxx: scsi4: AEN: INFO (0x04:0x002B): Verify completed:unit=0.
Oct  1 09:14:50 norma kernel: 3w-9xxx: scsi4: AEN: WARNING (0x04:0x0023): Sector repair completed:port=2, LBA=0x34C8E1C6.
Oct  1 09:14:50 norma kernel: 3w-9xxx: scsi4: AEN: WARNING (0x04:0x0023): Sector repair completed:port=2, LBA=0x34C8E100.
Oct  1 09:14:50 norma kernel: 3w-9xxx: scsi4: AEN: ERROR (0x04:0x0009): Drive timeout detected:port=2.
Oct  1 09:15:22 norma kernel: 3w-9xxx: scsi4: AEN: WARNING (0x04:0x0023): Sector repair completed:port=2, LBA=0x34C3F46E.
Oct  1 09:15:33 norma kernel: 3w-9xxx: scsi4: AEN: WARNING (0x04:0x0023): Sector repair completed:port=2, LBA=0x15EB7476.
Oct  1 09:16:00 norma kernel: 3w-9xxx: scsi4: AEN: WARNING (0x04:0x0023): Sector repair completed:port=2, LBA=0x34C8A406.
Oct  1 09:16:00 norma kernel: 3w-9xxx: scsi4: AEN: ERROR (0x04:0x0002): Degraded unit:unit=0, port=2.

Start yet another re-build …

Head node dead, 'bus error' reported for each and every command, array degraded (port 2 this time). Getting worryingly close to serious trouble by the look of it. Rebuild succeeded, restart jobs …