From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Garzik Subject: Re: Burning CDs as user produces coasters (Plextor drive) Date: Mon, 24 Mar 2008 16:50:53 -0400 Message-ID: <47E8142D.4040301@garzik.org> References: <9d2cd630803241039m79c47754v6562404133a61274@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from srv5.dvmed.net ([207.36.208.214]:39094 "EHLO mail.dvmed.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752558AbYCXUuz (ORCPT ); Mon, 24 Mar 2008 16:50:55 -0400 In-Reply-To: <9d2cd630803241039m79c47754v6562404133a61274@mail.gmail.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Gregor Jasny Cc: Linux Kernel Mailing List , linux-ide@vger.kernel.org Gregor Jasny wrote: > Hi, > > since some time burning ISO CD images as user fails. > Wodim stops during OPC and the kernel prints some messages: > > scsi: unknown opcode 0xe9 > scsi: unknown opcode 0xed > scsi: unknown opcode 0xf5 > scsi: unknown opcode 0xeb > > If I burn as root, everything works fine. The used CD writer is a > "PLEXTOR DVDR PX-712A 1.09". I've seen in the wodim/cdrecord > sources that plextor drives are handled different from other drives. > > Do you know what the above listed commands are for? > Maybe they could be included in blk_verify_command? > If your'e not sure about the dangerousness maybe as a config option? What drivers and kernel versions work (and which fail)? Jeff