MFC of "Large set of CAM improvements" breaks I/O to Adaptec
29160 SCSI controller
petefrench at ticketswitch.com
Thu Apr 29 09:12:25 UTC 2010
> 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.
Glad you have managed to dupliate it - the queue depth thing is
inetersting, what changes did you make ? I can try them here and see
if they improve the situation on either of my two machines.
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