Date: Mon, 12 May 2003 15:22:22 +0200
From: Jens Axboe <axboe@suse.de>
To: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>, Oliver Neukum <oliver@neukum.org>,
       Oleg Drokin <green@namesys.com>, lkhelp@rekl.yi.org,
       linux-kernel@vger.kernel.org
Subject: Re: 2.5.69, IDE TCQ can't be enabled
Message-ID: <20030512132222.GA17033@suse.de>
References: <200305121455.58022.oliver@neukum.org> <Pine.SOL.4.30.0305121513270.18058-100000@mion.elka.pw.edu.pl>
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On Mon, May 12 2003, Bartlomiej Zolnierkiewicz wrote:
> 
> On Mon, 12 May 2003, Oliver Neukum wrote:
> 
> > > Just a note that we have found TCQ unusable on our IBM drives and we had
> > > some reports about TCQ unusable on some WD drives.
> > >
> > > Unusable means severe FS corruptions starting from mount.
> > > So if your FSs will suddenly start to break, start looking for cause with
> > > disabling TCQ, please.
> >
> > I can confirm that. This drive Model=IBM-DTLA-307045, FwRev=TX6OA60A,
> > SerialNo=YMCYMT3Y229 has eaten my filesystem with TCQ on 2.5.69
> >
> > 	Regards
> > 		Oliver
> 
> TCQ is marked EXPERIMENTAL and is known to be broken.
> Probably it should be marked DANGEROUS or removed?

Something external probably broke it long ago, I think it can be fixed
pretty easily. I just need to do it... Perhaps just removing the config
option would be safest?

-- 
Jens Axboe

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