linux-kernel - Re: SATA problems

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Date:	Sat, 17 Feb 2007 13:47:36 -0300
From:	Pablo Sebastian Greco <lkml@...agreco.com.ar>
To:	Marcus Haebler <haebler@...il.com>
CC:	Tejun Heo <htejun@...il.com>, linux-kernel@...r.kernel.org
Subject: Re: SATA problems

Marcus Haebler wrote:
> I opened a bug report (228979) on bugzilla.redhat.com on this one because
> I have the same issue under FC6 2.6.19-1.2895. Here is the link:
>
>    https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=228979
>
> Do you have any more updates on this problem? Is there a way I can help
> by providing debug data?
>
> Thanks,
>
> Marcus
>
> On 1/23/07, Tejun Heo <htejun@...il.com> wrote:
>> Pablo Sebastian Greco wrote:
>> > Well, it took me a few days,  but I think I'm ready to report back. 
>> One
>> > of the drives was failing, and it stopped after rewiring power 
>> supply so
>> > the last problem seems to be corrected.
>> > OTOH, your blacklist seems to be needed too, now I'm running FC6
>> > distribution kernel 2.6.19-1.2895.fc6 (2.6.19.2 + some patches by
>> > fedora) and setting
>> > echo 1 >/sys/block/sdX/device/queue_depth
>> > on all the SAMSUNG drives (sdb, sdc and sdd)
>> > The second I type
>> > echo 31 >/sys/block/sdX/device/queue_depth
>> > on any of the drives I get these messages
>> >
>> > Jan 23 12:36:30 squid kernel: BUG: warning: (ap->ops->error_handler &&
>> > ata_tag_valid(ap->active_tag)) at
>> > drivers/ata/libata-core.c:4602/ata_qc_issue() (Not ta
>> > inted)
>>
>> This is kernel bug that needs fixing.  I'll investigate.
>>
>> -- 
>> tejun
>> -
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>>
>>
>
On my side, all the problems dissapeared on all the kernels after 
changing all 3 drives to non-NCQ drives, I was going crazy.

New dmesg attached

Pablo.

View attachment "dmesg.txt" of type "text/plain" (26754 bytes)