From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 13 May 2002 11:41:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 13 May 2002 11:41:41 -0400 Received: from c9outbound.ctmail.com ([216.163.188.209]:45327 "EHLO C9Mailgw02.amadis.com") by vger.kernel.org with ESMTP id ; Mon, 13 May 2002 11:41:39 -0400 Message-ID: <3CDFDEAA.A55E2A8F@starband.net> Date: Mon, 13 May 2002 11:41:30 -0400 From: Justin Piszcz X-Mailer: Mozilla 4.79 [en] (X11; U; Linux 2.4.18 i686) X-Accept-Language: en MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: Re: sg in 2.4.18 In-Reply-To: <20020513101050.A3879@coredump.electro-mechanical.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org I have two Plextor 12/10/32A CDRW's. IDE 0 - MASTER: HDD SLAVE: Plextor IDE 1 - MASTER: Plextor I burn two cds at the same time at 12X. The catch is, the Plextors have burn proof. When the CD-R drive goes to finalize the disc on IDE 0, the IDE 1 stops writing for 3-5 seconds, then it continues. This is because it is on the same chain as the HDD. So you ask, why not get a Promise controller and do that? I also have an ATA 100 Promise controller. Believe it or not, any combination with the promise controller only yields results worse than the setup I've mentioned above. I'm not sure why, but any combination you can think of (between the card, and two IDE busses on the motherboard) I have tried. Any combination involving the promise makes each drive resort to burnproof every 5-10 seconds, when I was doing tests, it took about 30-40 minutes to burn @ 12X (two cds parellel) due to falling back to burnproof every 5 seconds or so. Also, putting both burners on the same chain currently does not work. Because when cdrecord sends the command to FIX the cd after it is done burning the data, the command gets sent to both IDE drives causing cdrecord to blow up (the burn fails) on the other burner. William Thompson wrote: > Is it possible to open sg more than once for multiple devices? > > IE, cdrecord 2 cds at once. > - > 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/