Re: [Bug #12263] Sata soft reset filling log

Sergei Shtylyov
2009-02-16T15:31:28Z

Hello, I wrote:

>>>>>>> This message has been generated automatically as a part of a report
>>>>>>> of regressions introduced between 2.6.27 and 2.6.28.

>>>>>>> The following bug entry is on the current list of known regressions
>>>>>>> introduced between 2.6.27 and 2.6.28. Please verify if it still
>>>>>>> should
>>>>>>> be listed and let me know (either way).

>>>>>>> Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=12263
>>>>>>> Subject : Sata soft reset filling log
>>>>>>> Submitter : Justin Madru <bevicm-QP1aEjBt37AFQeE35raUng@public.gmane.org>
>>>>>>> Date : 2008-12-13 2:07 (64 days old)
>>>>>>> References :
>>>>>>> http://marc.info/?l=linux-kernel&m=122913412608533&w=4

>>>>>> I'm still seeing this on .29-rc5, and I think that my bug #12263
>>>>>> is a duplicate of bug #12609,
>>>>>> or more correctly it's a duplicate of mine because I reported first.

>>>>>> It seems like the bug has been fixed in tip/master for some time now.
>>>>>> Below is the diff of origin and tip from when I tested.

>>>>> Ingo, do you know whinch patch in -tip fixes this regression?

>>>> This one, done on Jan 10, more than a month ago:

>>>> f1d26da: Revert "libata: Add 32bit PIO support"

>>>> When a commit causes trouble in -tip qa i immediately revert it in
>>>> 95% of the cases, no questions asked. Especially if it's related to
>>>> persistent storage.

>>> OK, thanks.

>>> We seem to have a working fix patch for this issue in bug #12609.

>> Wait, if this is indeed post-2.6.27 regression, it couldn't
>> possibly have been caused by that patch which got merged during
>> 2.6.29-rc1 timeframe. Something's up with this bug...

> Also, it's been reported for a hard disk while regression in bug
> 12609 only hits the ATAPI devices. I think that bug 12263 needs to be reopened.

After referring to the SCSI command codes "cdb 0x1e" means ALLOW MEDIUM
REMOVAL command -- which could hardly be addressed to an usual hard disk. So,
it looks like we had a case of the confused bug report which has a lot of info
on the hard disk while errors were most probably happening with a CD/DVD
drive. :-)

MBR, Sergei