linux-kernel - Re: libata EH running when switching VTs

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Date:	Tue, 25 Jan 2011 10:17:12 +0100
From:	Toralf Förster <toralf.foerster@....de>
To:	Robert Hancock <hancockrwd@...il.com>
Cc:	linux-kernel@...r.kernel.org, ide <linux-ide@...r.kernel.org>,
	Jens Rutschmann <Jens.Rutschmann@....info>
Subject: Re: libata EH running when switching VTs


Robert Hancock wrote at 02:23:30
> On 01/22/2011 11:31 AM, Toralf Förster wrote:
> >>> I'm wondering why I get this in /var/log/messages w/ kernel 2.6.37 when
> >>> I switch from VT7 (running xorg ) to VT12 (or 1 or 2 or another
> >>> number) and back:
> Curious, there seems to be no indication of why EH was triggered,
> doesn't seem to be have been due to an error. Does this also happen in
> single-user mode or with minimal processes running? It's possible that
> userspace is triggering this somehow.

It happens only, when I switch to the VT7 _and_ X is running there.
It dos not happen when switching  only between straight consoles like from VT1 
to VT2 or so.

BTW I Cc'ed Jens which have a similar problem with his ThinkPad T61:

>Hi Toralf,
>
>I saw lines similar to yours as well on my T61 during boot. It does not occur 
>when switching VTs.
>
>When I switch VTs as you described I get this in dmesg though:
>
>[  491.372673] ata1.00: configured for UDMA/133
>[  491.372677] ata1: EH complete
>[  491.680387] EXT4-fs (sda1): re-mounted. Opts: discard,commit=0
>[  491.683110] EXT4-fs (sda3): re-mounted. Opts: discard,commit=0
>
>This is with a vanilla 2.6.37

-- 
MfG/Kind regards
Toralf Förster

pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3

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