Showstopper ATA bug in 6.1-PRE?

[Søren Schmidt]

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...

-Søren