linux-kernel - Re: 2.6.27-rc1 (2fca5c): libata: kernel cant boot

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Message-ID: <20081024070955.GN22217@kernel.dk>
Date:	Fri, 24 Oct 2008 09:09:56 +0200
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Alexander Beregalov <a.beregalov@...il.com>
Cc:	tj@...nel.org, torvalds@...ux-foundation.org,
	LKML <linux-kernel@...r.kernel.org>, linux-ide@...r.kernel.org
Subject: Re: 2.6.27-rc1 (2fca5c): libata: kernel cant boot

On Fri, Oct 24 2008, Alexander Beregalov wrote:
> Hi
> 
> commit 2fca5ccf97d2c28bcfce44f5b07d85e74e3cd18e
> Author: Jens Axboe <jens.axboe@...cle.com>
> Date:   Wed Oct 22 09:34:49 2008 +0200
> 
>     libata: switch to using block layer tagging support
> 
> 
> This kernel can not read even 0 sector on disk with rootfs. It
> initialized disk, but cant read it at all.
>  CMD646 on Sparc
> 
> Rverting helped.

Doh, how annoying! What driver does that controller use? PATA doesn't
even use NCQ, so it's a bit of an oddity that it makes a difference at
all.

Can you provide the boot messages?

-- 
Jens Axboe

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