Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750774AbWBCNb0 (ORCPT ); Fri, 3 Feb 2006 08:31:26 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750772AbWBCNb0 (ORCPT ); Fri, 3 Feb 2006 08:31:26 -0500 Received: from mailhub.fokus.fraunhofer.de ([193.174.154.14]:50895 "EHLO mailhub.fokus.fraunhofer.de") by vger.kernel.org with ESMTP id S1750774AbWBCNbZ (ORCPT ); Fri, 3 Feb 2006 08:31:25 -0500 From: Joerg Schilling Date: Fri, 03 Feb 2006 14:29:44 +0100 To: rlrevell@joe-job.com, jim@why.dont.jablowme.net Cc: schilling@fokus.fraunhofer.de, mrmacman_g4@mac.com, matthias.andree@gmx.de, linux-kernel@vger.kernel.org, jengelh@linux01.gwdg.de, James@superbug.co.uk, j@bitron.ch, acahalan@gmail.com Subject: Re: CD writing in future Linux (stirring up a hornets' nest) Message-ID: <43E35AC8.nail5CAD55WJ3@burner> References: <43DDFBFF.nail16Z3N3C0M@burner> <1138642683.7404.31.camel@juerg-pd.bitron.ch> <43DF3C3A.nail2RF112LAB@burner> <1138710764.17338.47.camel@juerg-t40p.bitron.ch> <43DF6812.nail3B44TLQOP@burner> <20060202062840.GI5501@mail> <43E1EA35.nail4R02QCGIW@burner> <20060202161853.GB8833@voodoo> <787b0d920602020917u1e7267c5lbea5f02182e0c952@mail.gmail.com> <20060202210949.GD10352@voodoo> <1138915551.15691.123.camel@mindpipe> In-Reply-To: <1138915551.15691.123.camel@mindpipe> User-Agent: nail 11.2 8/15/04 MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1109 Lines: 29 Lee Revell wrote: > On Thu, 2006-02-02 at 16:09 -0500, Jim Crilly wrote: > > Apparently O_EXCL was added by Ubuntu and Debian to stop > > burns being corrupted by hald polling the device while a disc is > > being burned. > > IO priorities are the correct solution... No, they are not. The correct solution is to implement "hald" in a _cooperative_ way like e.g. vold on Solaris. The main point is not to poll to frequent (Solaris does once everz 3 seconds) and to use SCSI commands only that to not interrupt or disturb CD/DVD-writing. J?rg -- EMail:joerg@schily.isdn.cs.tu-berlin.de (home) J?rg Schilling D-13353 Berlin js@cs.tu-berlin.de (uni) schilling@fokus.fraunhofer.de (work) Blog: http://schily.blogspot.com/ URL: http://cdrecord.berlios.de/old/private/ ftp://ftp.berlios.de/pub/schily - 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/