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Date: Mon, 12 May 2003 15:16:17 +0200 (MET DST)
From: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
cc: 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
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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?

Alan, what do you think?

--
Bartlomiej