MFC of "Large set of CAM improvements" breaks I/O to Adaptec 29160 SCSI controller

[Andy Farkas]

2010/4/29 Alexander Motin <mav at freebsd.org>:
> Pete French wrote:
>>> I have some 29160N locally and I'll try to reproduce this.
>>
>> I would suggest you try gmirror across two drives - that is how
>> both myself and the original poster first noticed the issue.
>
> Thanks. First step successful - I can steadily reproduce problem on
> CURRENT. raidtest with 200 I/O streams over gmirror of two disks on same
> channel triggers issue in seconds. Any I/O on channel dying after both
> disks report "Queue full" error same time. The rest of system works
> fine. If I preliminarily manually adjust queue depth of one disk -
> everything works fine. I'll investigate it tomorrow.
>
> --
> Alexander Motin
>

Thanks. Look forward to any results.

-andyf