From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: [kekcsibe@gmail.com: PROBLEM: Pioneer DVD-RW DVR-112D does not work since linux 2.6.29] Date: Sat, 06 Feb 2010 09:33:28 +0900 Message-ID: <4B6CB8D8.8090304@gmail.com> References: <20100129044834.GB25869@liondog.tnic> <4B633A49.8000700@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from mail-px0-f182.google.com ([209.85.216.182]:59973 "EHLO mail-px0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750733Ab0BFIMO (ORCPT ); Sat, 6 Feb 2010 03:12:14 -0500 Received: by pxi12 with SMTP id 12so5193229pxi.33 for ; Sat, 06 Feb 2010 00:12:14 -0800 (PST) In-Reply-To: <4B633A49.8000700@gmail.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Robert Hancock Cc: kekcsibe@gmail.com, Borislav Petkov , linux-ide Hello, On 01/30/2010 04:43 AM, Robert Hancock wrote: > kazimir:~# mount /cdrom > sr 1:0:0:0: [sr0] Result: hostbyte=0x00 driverbyte=0x08 > sr 1:0:0:0: [sr0] Sense Key : 0x5 [current] > sr 1:0:0:0: [sr0] <> ASC=0xa8 ASCQ=0x1ASC=0xa8 ASCQ=0x1 > sr 1:0:0:0: [sr0] CDB: cdb[0]=0x28: 28 00 00 00 00 10 00 00 02 00 > end_request: I/O error, dev sr0, sector 64 > Buffer I/O error on device sr0, logical block 8 > > The kernel tried to read some sectors off the disk (command 0x28) and > the drive returned an error. ASC of 0xa8 is a vendor-specific error > code, so only Pioneer can likely say what that error means. > > You're sure that 2.6.22 is still able to successfully access this drive? > Any unusual dmesg output there? One thing which could affect this is the change in the isofs code. Locating the anchor blocks for isofs involves some guesswork and that part has changed somewhat during past several releases. Different kernel versions would request different sequence of blocks. It could be that access to certain sectors is confusing the drive. Thanks. -- tejun