From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264098AbUHJKSR (ORCPT ); Tue, 10 Aug 2004 06:18:17 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263893AbUHJKOl (ORCPT ); Tue, 10 Aug 2004 06:14:41 -0400 Received: from ns.virtualhost.dk ([195.184.98.160]:53440 "EHLO virtualhost.dk") by vger.kernel.org with ESMTP id S264251AbUHJKNY (ORCPT ); Tue, 10 Aug 2004 06:13:24 -0400 Date: Tue, 10 Aug 2004 12:12:24 +0200 From: Jens Axboe To: Erik Mouw Cc: Joerg Schilling , linux-kernel@vger.kernel.org Subject: Re: PATCH: cdrecord: avoiding scsi device numbering for ide devices Message-ID: <20040810101224.GD11201@suse.de> References: <200408061330.i76DU2Tm005937@burner.fokus.fraunhofer.de> <20040806151017.GG23263@suse.de> <20040810084159.GD10361@merlin.emma.line.org> <20040810101123.GB2743@harddisk-recovery.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20040810101123.GB2743@harddisk-recovery.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Aug 10 2004, Erik Mouw wrote: > On Tue, Aug 10, 2004 at 10:41:59AM +0200, Matthias Andree wrote: > > It's not exactly fun if everything can do 48X but your favorite OS > > (Linux 2.4) is limited to say 8X because it only does PIO in spite of > > hdparm settings and everything else. > > FWIW, we burn CDs at 40x with a 2.4 kernel. It is however a hardware or > driver related issue: no problems whatsoever with VIA IDE interfaces, > but only PIO with the CD writer connected to a Promise 20268. It's not a problem with data CDs, it's only a problem with non-512b aligned sector sizes (like audio CDs). -- Jens Axboe