From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932296AbVIEQY3 (ORCPT ); Mon, 5 Sep 2005 12:24:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932316AbVIEQY3 (ORCPT ); Mon, 5 Sep 2005 12:24:29 -0400 Received: from orb.pobox.com ([207.8.226.5]:40419 "EHLO orb.pobox.com") by vger.kernel.org with ESMTP id S932296AbVIEQY2 (ORCPT ); Mon, 5 Sep 2005 12:24:28 -0400 Message-ID: <431C7131.3030506@rtr.ca> Date: Mon, 05 Sep 2005 12:24:17 -0400 From: Mark Lord User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.11) Gecko/20050728 X-Accept-Language: en, en-us MIME-Version: 1.0 To: Oliver Tennert Cc: linux-kernel@vger.kernel.org Subject: Re: DVD+-R[W] regression in 2.6.12/13 References: <200509051533.01465.tennert@science-computing.de> In-Reply-To: <200509051533.01465.tennert@science-computing.de> 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 Oliver Tennert wrote: > > "hdparm -I /dev/dvdrecorder" leads to the output: > > /dev/dvdrecorder: > HDIO_DRIVE_CMD(identify) failed: Input/output error > > The kernel tells me: > > [4296893.262000] hdd: drive_cmd: status=0x51 { DriveReady SeekComplete Error } > [4296893.262000] hdd: drive_cmd: error=0x04 { AbortedCommand } > [4296893.262000] ide: failed opcode was: 0xec Those messages are "normal" for an ATAPI drive. hdparm first tries the IDENTIFY opcode (0xec), and if that fails (above) it then tries the PACKET_IDENTIFY opcode (0xa1), which should work for ATAPI. I'm not sure why the "failed: Input/output error" (-EIO) result is being returned from the ATA layer in this case. Driver bug, most likely. Cheers