"ad0: TIMEOUT - WRITE_DMA" type errors with 7.0-RC1

[Joe Peterson]

I've seen mention of this kind of issue before, but I never saw a
solution, except that someone reported that a certain version of 6.x
seemed to make it go away - accounts of this problem are a bit vague.  I
am running 7.0-RC1, and I am seeing the errors periodically, and I am
wondering if this is a known issue.  Note that smartctl does not report
errors logged and gives a "PASSED" to the drive.  I am running at
UDMA100 ATA.  Also, if it matters, I am using ZFS.

Attached is a grep of the /var/log/messages file.  Let me know if anyone
has suggestions.

					Thanks!  Joe
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Jan 21 23:39:54 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=54112319
Jan 22 00:06:29 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=51610951
Jan 22 00:16:40 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=53031647
Jan 22 00:30:15 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=54243391
Jan 22 07:05:59 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=51768047
Jan 22 09:08:16 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=55890239
Jan 22 09:17:52 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=55919423
Jan 22 09:23:42 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=53470111
Jan 23 00:26:03 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=53588527
Jan 23 00:26:26 crater kernel: ad0: TIMEOUT - WRITE_DMA48 retrying (1 retry left) LBA=764596887
Jan 23 00:26:26 crater kernel: ad0: TIMEOUT - WRITE_DMA48 retrying (0 retries left) LBA=764596887
Jan 23 00:26:26 crater kernel: ad0: FAILURE - WRITE_DMA48 status=51<READY,DSC,ERROR> error=10<NID_NOT_FOUND> LBA=764596887
Jan 23 03:01:06 crater kernel: ad0: TIMEOUT - READ_DMA retrying (1 retry left) LBA=185819705
Jan 23 03:01:37 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=54837686
Jan 23 03:03:22 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=53472407
Jan 23 03:03:39 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=53627991
Jan 23 11:33:27 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=57479999
Jan 23 12:30:31 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=55407234
Jan 23 13:20:06 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=57779519
Jan 23 17:30:18 crater kernel: ad0: TIMEOUT - READ_DMA48 retrying (1 retry left) LBA=453849407
Jan 23 17:30:19 crater kernel: ad0: FAILURE - READ_DMA48 status=51<READY,DSC,ERROR> error=10<NID_NOT_FOUND> LBA=453849407
Jan 23 17:30:29 crater kernel: ad0: TIMEOUT - READ_DMA retrying (1 retry left) LBA=187373078
Jan 23 18:34:50 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=1017919
Jan 23 18:35:00 crater kernel: ad0: TIMEOUT - READ_DMA retrying (1 retry left) LBA=54547647
Jan 23 18:35:12 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=56354060
Jan 23 18:35:20 crater kernel: ad0: TIMEOUT - READ_DMA retrying (1 retry left) LBA=53919167
Jan 23 23:59:18 crater kernel: ad0: TIMEOUT - FLUSHCACHE retrying (1 retry left)
Jan 24 00:00:27 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=237661119
Jan 24 00:00:27 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (0 retries left) LBA=237661119
Jan 24 00:00:27 crater kernel: ad0: FAILURE - WRITE_DMA timed out LBA=237661119
Jan 24 00:00:27 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=236239553
Jan 24 00:00:27 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (0 retries left) LBA=236239553
Jan 24 00:00:27 crater kernel: ad0: FAILURE - WRITE_DMA timed out LBA=236239553
Jan 24 00:00:27 crater kernel: ad0: TIMEOUT - WRITE_DMA48 retrying (1 retry left) LBA=764595671
Jan 24 00:00:27 crater kernel: ad0: TIMEOUT - WRITE_DMA48 retrying (0 retries left) LBA=764595671
Jan 24 00:00:27 crater kernel: ad0: FAILURE - WRITE_DMA48 timed out LBA=764595671
Jan 24 00:01:13 crater kernel: ad0: TIMEOUT - WRITE_DMA48 retrying (1 retry left) LBA=764595671
Jan 24 00:01:13 crater kernel: ad0: TIMEOUT - WRITE_DMA48 retrying (0 retries left) LBA=764595671
Jan 24 00:01:13 crater kernel: ad0: FAILURE - WRITE_DMA48 timed out LBA=764595671
Jan 24 00:01:13 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=236180175
Jan 24 00:01:13 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (0 retries left) LBA=236180175
Jan 24 00:01:13 crater kernel: ad0: FAILURE - WRITE_DMA timed out LBA=236180175
Jan 24 00:01:13 crater kernel: ad0: TIMEOUT - FLUSHCACHE retrying (1 retry left)
Jan 24 00:01:13 crater kernel: ad0: TIMEOUT - FLUSHCACHE retrying (0 retries left)
Jan 24 02:31:53 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=236191551
Jan 24 04:54:57 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=238068287
Jan 24 04:55:56 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (0 retries left) LBA=238068287
Jan 24 04:55:56 crater kernel: ad0: FAILURE - WRITE_DMA timed out LBA=238068287
Jan 24 04:55:56 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=236315627
Jan 24 04:55:56 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (0 retries left) LBA=236315627
Jan 24 04:55:56 crater kernel: ad0: FAILURE - WRITE_DMA timed out LBA=236315627
Jan 24 04:55:56 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=238068415
Jan 24 04:55:56 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (0 retries left) LBA=238068415
Jan 24 04:55:56 crater kernel: ad0: FAILURE - WRITE_DMA timed out LBA=238068415
Jan 24 04:55:56 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=236315627
Jan 24 04:55:56 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (0 retries left) LBA=236315627
Jan 24 06:38:42 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=236217031
Jan 24 06:40:54 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=236354111
Jan 24 09:00:11 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=787071
Jan 24 23:56:40 crater kernel: ad0: TIMEOUT - WRITE_DMA48 retrying (1 retry left) LBA=764502723
Jan 24 23:56:43 crater kernel: ad0: FAILURE - WRITE_DMA48 status=51<READY,DSC,ERROR> error=10<NID_NOT_FOUND> LBA=764502723
Jan 25 03:01:08 crater kernel: ad0: TIMEOUT - WRITE_DMA48 retrying (1 retry left) LBA=765143487
Jan 25 03:01:58 crater kernel: ad0: FAILURE - WRITE_DMA48 status=51<READY,DSC,ERROR> error=10<NID_NOT_FOUND> LBA=765143487
Jan 25 03:01:58 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=53815221
Jan 25 03:01:58 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (0 retries left) LBA=53815221
Jan 25 03:01:58 crater kernel: ad0: FAILURE - WRITE_DMA timed out LBA=53815221
Jan 25 03:01:58 crater kernel: ad0: TIMEOUT - WRITE_DMA48 retrying (1 retry left) LBA=764668013
Jan 25 03:01:58 crater kernel: ad0: TIMEOUT - WRITE_DMA48 retrying (0 retries left) LBA=764668013
Jan 25 03:01:58 crater kernel: ad0: FAILURE - WRITE_DMA48 timed out LBA=764668013
Jan 25 03:01:58 crater kernel: ad0: TIMEOUT - WRITE_DMA48 retrying (1 retry left) LBA=765143359
Jan 25 03:01:58 crater kernel: ad0: TIMEOUT - WRITE_DMA48 retrying (0 retries left) LBA=765143359
Jan 25 03:03:13 crater kernel: ad0: FAILURE - WRITE_DMA48 timed out LBA=765143359
Jan 25 03:03:13 crater kernel: ad0: TIMEOUT - READ_DMA retrying (1 retry left) LBA=185665215
Jan 25 03:03:13 crater kernel: ad0: TIMEOUT - READ_DMA retrying (0 retries left) LBA=185665215
Jan 25 03:03:13 crater kernel: ad0: FAILURE - READ_DMA timed out LBA=185665215
Jan 25 03:03:13 crater kernel: ad0: TIMEOUT - WRITE_DMA48 retrying (1 retry left) LBA=764561207
Jan 25 03:03:13 crater kernel: ad0: FAILURE - WRITE_DMA48 status=51<READY,DSC,ERROR> error=10<NID_NOT_FOUND> LBA=764561207
Jan 25 03:03:13 crater kernel: ad0: TIMEOUT - WRITE_DMA48 retrying (1 retry left) LBA=764674815
Jan 25 03:03:13 crater kernel: ad0: TIMEOUT - WRITE_DMA48 retrying (0 retries left) LBA=764674815
Jan 25 03:03:13 crater kernel: ad0: FAILURE - WRITE_DMA48 timed out LBA=764674815
Jan 25 03:03:13 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=236113195
Jan 25 03:03:13 crater kernel: ad0: TIMEOUT - WRITE_DMA retrying (0 retries left) LBA=236113195
Jan 25 03:03:13 crater kernel: ad0: TIMEOUT - WRITE_DMA48 retrying (1 retry left) LBA=764561207
Jan 25 03:03:13 crater kernel: ad0: TIMEOUT - WRITE_DMA48 retrying (0 retries left) LBA=764561207
Jan 25 03:03:13 crater kernel: ad0: FAILURE - WRITE_DMA48 status=51<READY,DSC,ERROR> error=10<NID_NOT_FOUND> LBA=764561207
Jan 25 07:46:58 crater kernel: ad0: TIMEOUT - WRITE_DMA48 retrying (1 retry left) LBA=764587087
Jan 25 07:46:58 crater kernel: ad0: FAILURE - WRITE_DMA48 status=51<READY,DSC,ERROR> error=10<NID_NOT_FOUND> LBA=764587087