From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262127AbTELNLc (ORCPT ); Mon, 12 May 2003 09:11:32 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262134AbTELNLb (ORCPT ); Mon, 12 May 2003 09:11:31 -0400 Received: from ns.virtualhost.dk ([195.184.98.160]:22167 "EHLO virtualhost.dk") by vger.kernel.org with ESMTP id S262127AbTELNK4 (ORCPT ); Mon, 12 May 2003 09:10:56 -0400 Date: Mon, 12 May 2003 15:23:30 +0200 From: Jens Axboe To: Oleg Drokin Cc: Bartlomiej Zolnierkiewicz , Alan Cox , Oliver Neukum , lkhelp@rekl.yi.org, linux-kernel@vger.kernel.org Subject: Re: 2.5.69, IDE TCQ can't be enabled Message-ID: <20030512132330.GB17033@suse.de> References: <200305121455.58022.oliver@neukum.org> <20030512132209.GB4165@namesys.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20030512132209.GB4165@namesys.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, May 12 2003, Oleg Drokin wrote: > Hello! > > On Mon, May 12, 2003 at 03:16:17PM +0200, Bartlomiej Zolnierkiewicz 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 > > TCQ is marked EXPERIMENTAL and is known to be broken. > > Probably it should be marked DANGEROUS or removed? > > How do you think people will test code that is removed? > Or do you mean that nobody plans to look at this ever? > I remember that Jens Axboe promised to take a look at it some > months ago. Yeah, that is correct. OTOH, it's not a great loss. The SATA tcq will be much better, ide tcq is a really horrible beast. -- Jens Axboe