From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262070AbTJFV1L (ORCPT ); Mon, 6 Oct 2003 17:27:11 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262071AbTJFV1K (ORCPT ); Mon, 6 Oct 2003 17:27:10 -0400 Received: from parcelfarce.linux.theplanet.co.uk ([195.92.249.252]:52377 "EHLO www.linux.org.uk") by vger.kernel.org with ESMTP id S262070AbTJFV1H (ORCPT ); Mon, 6 Oct 2003 17:27:07 -0400 Message-ID: <3F81DE1D.6070304@pobox.com> Date: Mon, 06 Oct 2003 17:26:53 -0400 From: Jeff Garzik User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030703 X-Accept-Language: en-us, en MIME-Version: 1.0 To: "Daniel B." CC: linux-kernel@vger.kernel.org Subject: Re: IDE DMA errors, massive disk corruption: Why? Fixed Yet? Why not re-do failed op? References: <785F348679A4D5119A0C009027DE33C105CDB20A@mcoexc04.mlm.maxtor.com> <3F81CE9A.851806B8@smart.net> <200310062045.h96KjxJP008005@turing-police.cc.vt.edu> <3F81D995.D9C13F33@smart.net> In-Reply-To: <3F81D995.D9C13F33@smart.net> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Daniel B. wrote: > If the kernel starts a write command for block 993, wouldn't it wait > for a DMA interrupt signalling that the drive has received and accepted > the command before the kernel starts the write command for block 10934? With command queueing, no, it would not wait. > If it timed out waiting for that interrupt, can't it re-issue the > write for block 993 before proceeding? Assuming a large amount of sanity in your OS driver... certainly. Jeff