From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263228AbTJZPwT (ORCPT ); Sun, 26 Oct 2003 10:52:19 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263229AbTJZPwT (ORCPT ); Sun, 26 Oct 2003 10:52:19 -0500 Received: from karnickel.franken.de ([193.141.110.11]:29188 "EHLO karnickel.franken.de") by vger.kernel.org with ESMTP id S263228AbTJZPwS (ORCPT ); Sun, 26 Oct 2003 10:52:18 -0500 Date: Sun, 26 Oct 2003 15:42:48 +0100 To: Thilo Schulz Cc: linux-kernel@vger.kernel.org Subject: Re: Files burnt to DVDs corrupt when DMA enabled, tested with Kernel 2.4 and 2.6 series. Message-ID: <20031026144247.GA14050@debian.franken.de> References: <200310261241.20531.arny@ats.s.bawue.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200310261241.20531.arny@ats.s.bawue.de> User-Agent: Mutt/1.5.4i From: erik@debian.franken.de (Erik Tews) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Oct 26, 2003 at 12:41:12PM +0100, Thilo Schulz wrote: > I have recently used the dvd+rwtools released by Andy Polyakov to burn DVDs on > my Pioneer DVR-A06 burner. > After burning, I ran a diff on the resulting files and found the burnt file to > be different from the original. A closer examination revealed, that a few > chunks of each having a length of exactly 28 bytes had been written > incorrectly to the DVD. > The count of incorrectly written chunks depends strongly on additional > activity to the burning process itself. The more I work on the gui (browse > the web etc.), the more errors are written. I think I can confirm this problem but give not so much informations. I had a 1200 Mhz Athlon running on a board with a onboard-controller and a promise udma 100 controller. I connected my dvd-write to one of these controllers, I don't know which anymore and I had corrupted data too, the system had nearly no load and I would guess that I had perpahs 5 places on a dvd which where corrupted. I used dma. The writer and the cable worked fine in a system with a dual-p3 with intel bx chipset. I think I was running a 2.4 kernel, newer than 2.4.20 I think. I currently got this system offline because I am moving. If you need more informations I will perhaps be able to gain them in a week or so.