linux-kernel - Re: XFS shutting down due to IO timeout on SATA disk (pata

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Message-ID: <20080921215157.449ef5b7@neptune.home>
Date:	Sun, 21 Sep 2008 21:51:57 +0200
From:	Bruno Prémont <bonbons@...ux-vserver.org>
To:	Tejun Heo <tj@...nel.org>
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>,
	linux-ide@...r.kernel.org, Jeff Garzik <jgarzik@...ox.com>,
	Mark Lord <liml@....ca>
Subject: Re: XFS shutting down due to IO timeout on SATA disk (pata_via for
 CX700)

Hello,

On Tue, 16 September 2008 Tejun Heo <tj@...nel.org> wrote:
> > Just for the record, on the VIA there were no errors yet with
> > 2.6.27-rc6-git3 though I ran some compiling on it. As such it
> > *could* be that one of the patches pushed by Jeff helped:
> >   [libata] LBA28/LBA48 off-by-one bug in ata.h
> >   sata_inic162x: enable LED blinking
> >   ata: duplicate variable sparse warning
> 
> The only patch which could have affected the result is the off-by-one
> one; however, FLUSH timeout is a bit unexpected failure mode for the
> problem.  Can you please keep the system running for a whlie and see
> whether the problem occurs?

I haven't seen the error happen yet with 2.6.27-rc6-git3, so that off
by one bug might have had an incidence.
No warranty on that as I did also slightly change power-saving settings
for the disk around the time I updated kernel (-B254, -S241 parameters
to hdparm) and have not seen the error yet on 2.6.27-rc5-git9 since
then.

Will do more testing as time permits over the next days and report if I
find anything that looks useful (e.g. better way than time to trigger
the error or some of the hdparm options influencing the probability)

In case there is a patch that would eventually be able to get more info
when the error occurs I would be happy to apply it.

Bruno
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