Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262772AbTKEKAP (ORCPT ); Wed, 5 Nov 2003 05:00:15 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262790AbTKEKAP (ORCPT ); Wed, 5 Nov 2003 05:00:15 -0500 Received: from mail.gmx.net ([213.165.64.20]:25837 "HELO mail.gmx.net") by vger.kernel.org with SMTP id S262772AbTKEKAH (ORCPT ); Wed, 5 Nov 2003 05:00:07 -0500 X-Authenticated: #4512188 Message-ID: <3FA8CA87.2070201@gmx.de> Date: Wed, 05 Nov 2003 11:01:43 +0100 From: "Prakash K. Cheemplavam" User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.5) Gecko/20031102 X-Accept-Language: de-de, de, en-us, en MIME-Version: 1.0 To: Jens Axboe CC: linux-kernel@vger.kernel.org Subject: Re: 2.9test9-mm1 and DAO ATAPI cd-burning corrupt References: <3FA69CDF.5070908@gmx.de> <20031105084007.GZ1477@suse.de> <3FA8C916.3060702@gmx.de> <20031105095457.GG1477@suse.de> In-Reply-To: <20031105095457.GG1477@suse.de> X-Enigmail-Version: 0.76.7.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1941 Lines: 63 Jens Axboe wrote: > On Wed, Nov 05 2003, Prakash K. Cheemplavam wrote: > >>Jens Axboe wrote: >> >> >>>On Mon, Nov 03 2003, Prakash K. Cheemplavam wrote: >>> >>> >>>>Hi, >>>> >>>>well I am using k3b0.10.1 and either choosing cdrdao or cdrecord in >> >>DAO mode to burn the cd ends up in non-bit identical copies, wheres ion >>TAO (atleast with my 10x CD-RW I tested) the copy succeded. I tried >>several times, and always got this issue. >> >>>>bash-2.05b$ md5sum livecd-2.6_10-23-2003.iso >>>>f73f3a74239dfe94b322b85fd14a306e livecd-2.6_10-23-2003.iso >>>> >>>>TAO: >>>>bash-2.05b$ md5sum /dev/cdroms/cdrom1 >>>>f73f3a74239dfe94b322b85fd14a306e /dev/cdroms/cdrom1 >>>> >>>>DAO: >>>>bash-2.05b$ md5sum /dev/cdroms/cdrom1 >>>>09e7e2a51af4c64685831513fbac18c2 /dev/cdroms/cdrom1 >>> >>> >>> >>>Could you please try and cmp the two images, finding out how big the >>>corrupted chunks are and what kind of data they contain? >> >> >>After some further investigation I found out, that the data is NOT >>corrupted, but in a way truncated in DAO mode: When I read out the image >>from the CD-RW drive, about 5kbyte are missing at the end (and doing >>several burn, it is always the same amount). Strange enough if I read >>the DAO burnt disk out by my DVD-ROM, the image can be read out >>completely! Can you understand this behaviour? I don't think it is a >>problem of my burner, but rather of the atapi driver? > > > Is actual data missing at the end? If yes, I'd say this looks a lot more > like a cdrecord problem. Sorry, I wasn't precise: The data is on the disc, as my DVD-ROM restores the full image (md5sum matches), but the CD-RW does not. Prakash -- =-----= |=-P-=| =-----= - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/