Showstopper ATA bug in 6.1-PRE?

[Søren Schmidt]

Wilko Bulte wrote:
> On Thu, Feb 09, 2006 at 03:37:07PM +0100, Sren Schmidt wrote..
>> Wilko Bulte wrote:
>>> On Wed, Feb 08, 2006 at 10:44:05PM +0100, Sren Schmidt wrote..
>>>> Wilko Bulte wrote:
>>>>> On Wed, Feb 08, 2006 at 10:02:08PM +0100, Sren Schmidt wrote..
>>>>>> Wilko Bulte wrote:
>>>>>>> Hi Soren,
>>>>>>>
>>>>>>> I just went to 6.1-PRE on my main machine, coming from 6.0-STABLE
>>>>>>> of roughly end of december.
>>>>>>>
>>>>>>> And I hit some stuff that really worries me:
>>>>>>>
>>>>>>> - the freshly built kernel keels over with (hand transcribed):
>>>>>>>
>>>>>>> ata3: reiniting channel SATA connect ... 
>>>>>>> SATA connected
>>>>>>> sata_connect_devices 0x1 <ATA_MASTER>
>>>>>>>
>>>>>>> ad6: req=0xC35ba0c8 SETFEATURES SETTRANSFERMODE semaphore timeout 
>>>>>>> !! DANGER Will RObinson !!
>>>>>>>
>>>>>>> (... is where I cannot read my own handwriting, it scrolled quite fast 
>>>>>>> on
>>>>>>> the screen..)
>>>>>>>
>>>>>>> Boot device is a SATA RAID1 on a Promise 2300.
>>>>>> Hmm, that should not happen. Could you try to backstep just ATA to 
>>>>>> before the MFC, that is 24/1/06 and let me know if that helps please ?
>>>>> First impression is that the problem is gone.  None of the previously 
>>>>> reported errors are seen.  I am running a level 0 dump from disk to disk
>>>>> to see if the box remains stable.  Given that this is my primary machine
>>>>> I sure hope it will be :-)
>>>>>
>>>>>>> Another snag is that my ad10 disk on 6.0-STABLE suddenly became ad12 on
>>>>>>> 6.1-PRE
>>>>>> Hmm that is because there is only 2 ports on your promise which is now 
>>>>>> correctly identified, before it was errounsly found as 3 ports.
>>>>> Ah, OK.  I would suggest a note to the Release Note writers would be a 
>>>>> good
>>>>> thing, devices changing location after an upgrade in the -stable branch
>>>>> is unnerving ;-)
>>>> Well, the good thing is that I can reproduce the error here, the bad 
>>>> thing is that it slipped through testing on -current...
>>>> Oh, well, I'll look into it ASAP...
>>> Thank you Soren!
>> OK, had a few this afternoon, could you try this patch and let me know 
>> if it helps, at least it makes the problem go away on my testbed..
> 
> Is this relative to HEAD or RELENG_6?  I cannot / will not go to HEAD
> with this machine (my main production box.. :-)

Doesn't matter, ATA is the same on both...

-Søren