linux-kernel - Re: [BUG] firewire: mass-storage i/o-problems

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Date:	Wed, 25 Jul 2007 07:12:08 +0200
From:	Manuel Lauss <mano@...rinelk.homelinux.net>
To:	Stefan Richter <stefanr@...6.in-berlin.de>
Cc:	Andreas Micklei <andreas.micklei@...star.de>,
	Andreas Messer <andreas.messer@...d-mail.uni-wuerzburg.de>,
	linux-kernel@...r.kernel.org, linux1394-devel@...ts.sourceforge.net
Subject: Re: [BUG] firewire: mass-storage i/o-problems

On Tue, Jul 24, 2007 at 09:56:59PM +0200, Stefan Richter wrote:
> Manuel Lauss wrote:
> > Actually, copying data to the disk while playing/seeking through a moviefile
> > which is also located on it is already enough. Forget the NFS thing...
> > 
> > Afterwards the firewire_sbp2 module has to be rmmod-ed and modprobed again
> > or it will continue to throw errors even for single reads.
> > 
> > I hope this helps tracking it down...
> 
> I tried this and similar tests on my main PC (PCIe based) and on an
> Athlon/KM266 PC, with 1394b and 1394a hardware.  Nothing happened,
> except for a single "status write for unknown orb", followed by command
> abort from which the disk immediately recovered.  I did many tests and
> it didn't happen again.  I.e. it's probable that the supposed bug
> happens here too, but very rarely.

I tried 2.6.23 in the meantime, it's *MUCH* harder to trigger; in fact
I had to skip through movies for ~10 minutes to get the orb timeout.
The disk was inaccessible for a few seconds then recovered fine.

> Could you (and everyone else who has repeated I/O errors with the new
> drivers, but not with the old drivers) test the attached patches, one
> patch at a time?  They apply to 2.6.22.

Will do.

Thanks,
	Manuel Lauss
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