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

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Message-ID: <46A6598B.5080004@s5r6.in-berlin.de>
Date:	Tue, 24 Jul 2007 21:56:59 +0200
From:	Stefan Richter <stefanr@...6.in-berlin.de>
To:	Manuel Lauss <mano@...rinelk.homelinux.net>
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

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.

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.
-- 
Stefan Richter
-=====-=-=== -=== ==---
http://arcgraph.de/sr/

View attachment "test1-firewire-fw-sbp2-default-to-128k-transfers.patch" of type "text/plain" (853 bytes)

View attachment "test2-firewire-fw-sbp2-increase-busy-timeout.patch" of type "text/plain" (2133 bytes)