From owner-freebsd-current@FreeBSD.ORG Sat Aug 28 14:33:42 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 7587116A4CE; Sat, 28 Aug 2004 14:33:42 +0000 (GMT) Received: from web.portaone.com (mail.russia.cz [195.70.151.35]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8F62743D2F; Sat, 28 Aug 2004 14:33:41 +0000 (GMT) (envelope-from sobomax@portaone.com) Received: from [192.168.0.20] (portacare.portaone.com [195.140.247.242]) (authenticated bits=0) by web.portaone.com (8.12.8p2/8.12.8) with ESMTP id i7SEXbCd009935 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Sat, 28 Aug 2004 16:33:38 +0200 (CEST) (envelope-from sobomax@portaone.com) Message-ID: <413097B2.7060802@portaone.com> Date: Sat, 28 Aug 2004 17:33:22 +0300 From: Maxim Sobolev Organization: Porta Software Ltd User-Agent: Mozilla Thunderbird 0.7.3 (Windows/20040803) X-Accept-Language: en-us, en MIME-Version: 1.0 To: =?ISO-8859-1?Q?S=F8ren_Schmidt?= References: <412F85E9.1050004@portaone.com> <412FABA0.3020104@DeepCore.dk> In-Reply-To: <412FABA0.3020104@DeepCore.dk> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit cc: re@FreeBSD.ORG cc: current@FreeBSD.ORG cc: sos@FreeBSD.ORG Subject: Re: ATAPI burners support - significant regression in 5.x X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 28 Aug 2004 14:33:42 -0000 Indeed, the problem appears to be finally fixed - I can't reproduce it anymore. At least I've been burning one of my 24x RWs in a loop during the past 2 hours without any problems. Please don't forget to do MT5 after several days. Thank you very much! -Maxim Søren Schmidt wrote: > Maxim Sobolev wrote: > >> I've noticed that quality of support for ATAPI CD burners in 5.x has >> degraded significantly. Often when burning CD-RW (I have not >> experimented on CD-Rs for obvious reasons), burncd hangs in the >> middle, without any error messages. When it happens it doesn't respond >> to SIGKILL, eject button doesn't work and the only way to recover form >> this situation without reboot is to run atacontrol reinit. I've tested >> 3 different CD-RW devices on 3 different machines (2 runnning RELENG_5 >> and one running RELENG_5_2), and the same problem exists on all of >> them. All machines were idle during my experiments. >> >> The easy way to reproduce this problem is to create some dummy iso >> image (e.g. dd if=/dev/random of=/tmp/tmp.iso bs=1m count=650), put >> blank CD-RW medium into the burner and then run something along the >> lines: >> >> while true; do time burncd -s max data /tmp/tmp.iso; burncd -s max >> fixate; burncd -s max blank; sleep 5; done >> >> I've tried RW mediums with various speed ratings: 2x-4x, 4x-12x, >> 16x-24x the problem happens with all of them. It also makes no >> difference whether the medium is new or used. >> >> Turning DMA on or off doesn't solve the problem either. >> >> All is matter of time - sooner or later burncd hangs solidly, usually >> 30 minutes is enough to reproduce the problem. >> >> IMHO it is quite significant problem that have to be addressed before >> the 5.3 is out. At least if I am not correct and the problem happens >> due to problems with particular CD-RW devices, ata driver has to be >> "smarter" to recover from such situation gracefully, returning error >> code and leaving device in the useable position. > > > Does this happen on an up to date -current ? I'm pretty sure I fixed > this some time ago, but I could be wrong as I was only able to reproduce > this ecactly once. The problem was a race in ata_start where it could > loose a request. The only way to get it back "online" was to get > ata_start called again by fx issueing a command though another channel > (ioctl, atapicam). > > -Søren > > > >