I'm seeing a similar behavior on my system, but across multiple devices
on a SAS drive array (front bays on a Supermicro-based system with
onboard mpt3sas card). The Sense Key here doesn't show a medium error,
and the multiple-drive behavior makes me think it's more likely either a
controller or cable problem. Interestingly, the issue only shows up
under heavy load (specifically a ZFS scrub).
During my next downtime window, I'm going to try to re-create the
problem while capturing a blktrace. Any other things to try at that
time, or a filter-mask I should apply?
[Wed Jun 6 14:30:19 2018] blk_update_request: I/O error, dev sdn,
sector 1757633640
[Wed Jun 6 14:37:10 2018] sd 15:0:5:0: unaligned partial completion
avoided (xfer_cnt=3072, sector_sz=4096)
[Wed Jun 6 14:37:10 2018] sd 15:0:5:0: [sdr] FAILED Result:
hostbyte=DID_OK driverbyte=DRIVER_SENSE
[Wed Jun 6 14:37:10 2018] sd 15:0:5:0: [sdr] Sense Key : Aborted
Command [current] [descriptor]
[Wed Jun 6 14:37:10 2018] sd 15:0:5:0: [sdr] Add. Sense: Nak received
[Wed Jun 6 14:37:10 2018] sd 15:0:5:0: [sdr] CDB: Read(10) 28 00 07 8a
c1 ca 00 00 01 00
[Wed Jun 6 14:37:10 2018] blk_update_request: I/O error, dev sdr,
sector 1012272720
[Wed Jun 6 15:20:43 2018] sd 15:0:8:0: unaligned partial completion
avoided (xfer_cnt=52224, sector_sz=4096)
[Wed Jun 6 15:20:43 2018] sd 15:0:8:0: [sdu] FAILED Result:
hostbyte=DID_OK driverbyte=DRIVER_SENSE
[Wed Jun 6 15:20:43 2018] sd 15:0:8:0: [sdu] Sense Key : Aborted
Command [current] [descriptor]
[Wed Jun 6 15:20:43 2018] sd 15:0:8:0: [sdu] Add. Sense: Nak received
[Wed Jun 6 15:20:43 2018] sd 15:0:8:0: [sdu] CDB: Read(10) 28 00 12 ab
dc 52 00 00 19 00
[Wed Jun 6 15:20:43 2018] blk_update_request: I/O error, dev sdu,
sector 2506023568
[Wed Jun 6 15:46:20 2018] sd 15:0:2:0: unaligned partial completion
avoided (xfer_cnt=11264, sector_sz=4096)
[Wed Jun 6 15:46:20 2018] sd 15:0:2:0: [sdo] FAILED Result:
hostbyte=DID_OK driverbyte=DRIVER_SENSE
[Wed Jun 6 15:46:20 2018] sd 15:0:2:0: [sdo] Sense Key : Aborted
Command [current] [descriptor]
[Wed Jun 6 15:46:20 2018] sd 15:0:2:0: [sdo] Add. Sense: Nak received
[Wed Jun 6 15:46:20 2018] sd 15:0:2:0: [sdo] CDB: Read(10) 28 00 40 a8
ef b5 00 00 03 00
[Wed Jun 6 15:46:20 2018] blk_update_request: I/O error, dev sdo,
sector 8678505896
