Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261551AbUC3Wmg (ORCPT ); Tue, 30 Mar 2004 17:42:36 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261517AbUC3WkQ (ORCPT ); Tue, 30 Mar 2004 17:40:16 -0500 Received: from parcelfarce.linux.theplanet.co.uk ([195.92.249.252]:33156 "EHLO www.linux.org.uk") by vger.kernel.org with ESMTP id S261472AbUC3Wjl (ORCPT ); Tue, 30 Mar 2004 17:39:41 -0500 Message-ID: <4069F71E.1040801@pobox.com> Date: Tue, 30 Mar 2004 17:39:26 -0500 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: Chris Wedgwood CC: "Stephen C. Tweedie" , Chris Mason , Bartlomiej Zolnierkiewicz , Jens Axboe , Linux Kernel Subject: Re: [PATCH] barrier patch set References: <20040319153554.GC2933@suse.de> <200403201723.11906.bzolnier@elka.pw.edu.pl> <1079800362.11062.280.camel@watt.suse.com> <200403201805.26211.bzolnier@elka.pw.edu.pl> <1080662685.1978.25.camel@sisko.scot.redhat.com> <1080674384.3548.36.camel@watt.suse.com> <1080683417.1978.53.camel@sisko.scot.redhat.com> <4069F2FC.90003@pobox.com> <20040330223625.GA1245@dingdong.cryptoapps.com> In-Reply-To: <20040330223625.GA1245@dingdong.cryptoapps.com> 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 Content-Length: 731 Lines: 21 Chris Wedgwood wrote: >>For IDE, O_DIRECT and O_SYNC can use special "FUA" commands, which >>don't return until the data is on the platter. > > > On modern drives how reliable is this? At one point disk-scrubbing > software which used FUA (to ensure data was being written to the > platters) showed that some drives completely ignore this. I'm suspicious of this, because of Bart's point... I haven't seen any PATA disks that did FUA, so it sounds like broken software. Jeff - 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/