From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jeff Garzik <jeff@garzik.org>
Subject: Re: ata4.00: exception Emask 0x0 SAct 0x1b7ffff SErr 0x0 action 0x6
 frozen
Date: Mon, 15 Nov 2010 13:42:20 -0500
Message-ID: <4CE17F0C.9020602@garzik.org>
References: <201011151533.17638.raid2@fuckaround.org>
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Sender: linux-raid-owner@vger.kernel.org
To: Pol Hallen <raid2@fuckaround.org>
Cc: linux-raid@vger.kernel.org
List-Id: linux-raid.ids

On 11/15/2010 09:33 AM, Pol Hallen wrote:
> howdy :-)
>
> in dmesg:
>
> [ 5485.000040] ata4.00: exception Emask 0x0 SAct 0x1b7ffff SErr 0x0 action 0x6
> frozen
> [ 5485.000103] ata4.00: failed command: READ FPDMA QUEUED
> [ 5485.000140] ata4.00: cmd 60/08:00:9f:00:00/00:00:7c:00:00/40 tag 0 ncq 4096
> in
> [ 5485.000141]          res 40/00:00:00:4f:c2/00:00:00:00:00/40 Emask 0x4
> (timeout)
> [ 5485.000265] ata4.00: status: { DRDY }
> [ 5485.000293] ata4.00: failed command: READ FPDMA QUEUED
> [ 5485.000325] ata4.00: cmd 60/60:08:c7:3e:84/00:00:56:00:00/40 tag 1 ncq
> 49152 in
> [ 5485.000326]          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4
> (timeout)
> [...]
>
> how check which disk should be broke broken? or is it a controller problem?
> thanks!


https://ata.wiki.kernel.org/index.php/Libata_error_messages