From owner-freebsd-current@FreeBSD.ORG Sat Nov 13 09:51:50 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 CA6C816A4CE; Sat, 13 Nov 2004 09:51:50 +0000 (GMT) Received: from spider.deepcore.dk (cpe.atm2-0-53484.0x50a6c9a6.abnxx9.customer.tele.dk [80.166.201.166]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0111F43D1D; Sat, 13 Nov 2004 09:51:50 +0000 (GMT) (envelope-from sos@DeepCore.dk) Received: from [194.192.25.143] (laptop.deepcore.dk [194.192.25.143]) by spider.deepcore.dk (8.12.11/8.12.10) with ESMTP id iAD9pjSo089549; Sat, 13 Nov 2004 10:51:47 +0100 (CET) (envelope-from sos@DeepCore.dk) Message-ID: <4195D903.2090801@DeepCore.dk> Date: Sat, 13 Nov 2004 10:50:59 +0100 From: =?ISO-8859-1?Q?S=F8ren_Schmidt?= User-Agent: Mozilla Thunderbird 0.7.2 (X11/20040802) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Zoltan Frombach References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable X-mail-scanned: by DeepCore Virus & Spam killer v1.4 cc: Robert Watson cc: freebsd-current@freebsd.org cc: Garance A Drosihn Subject: Re: 5.3-RELEASE: WARNING - WRITE_DMA interrupt timout 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, 13 Nov 2004 09:51:50 -0000 Zoltan Frombach wrote: > This is still an issue for me. Please read this post of mine: > http://lists.freebsd.org/pipermail/freebsd-stable/2004-November/009420.= html >=20 > Can anyone help? I would gladely install test patches to track this=20 > problem down. My system is 5.3-R. And the WRITE_DMA warning happens at = > least twice a day, it is so predictable. With thanks, Hmmm, that warning is issued from ATA when requests has been returned to = the systems bio_taskqueue but the system hasn't finished them within the = timeout. Now this is an indication of the system being unresponsive=20 already at that point, or at least that was the idea. It has nothing to do with a bad drive, since the interrupt was seen the=20 drive has finished the request it was asked, its the layers above ATA=20 that doesn't respond to the request beeing returned as finished. -S=F8ren >=20 > Zoltan >=20 > Subject: Re: 5.3-RELEASE: WARNING - WRITE_DMA interrupt timout - what=20 > does it mean? >=20 >=20 >> At 7:58 PM -0800 11/9/04, Zoltan Frombach wrote: >> >>> Well, since I posted my original message, I investigated >>> this a bit further. And according to this post=20 >>> http://lists.freebsd.org/pipermail/freebsd-current/2004-May/027235.ht= ml >>> this is not necessarily an indication of a failing hard >>> drive... (Quote: "there is no harm done, but the taskqueue >>> was slow to respond...") And I can also tell you that this >>> very same hard drive *never* produced this error message in >>> the past 6 months while running FreeBSD 5.2-CURRENT (from >>> May 9, 2004). >> >> >> Fwiw, I am also seeing this warning/error message on a brand new >> machine with a brand new SATA hard disk in it. I have seen the >> message on multiple installs into different partitions on the same >> hard drive. I turned off some sysctl (hw.ata.ata_dma, *I think*) >> to see if that would avoid the problem, but it did not seem to. >> >> I usually do not notice any problem at the same time as the message, >> but I have seen a few buildworlds which just happened to abort at >> the same second this warning message appeared in /var/log/message. >> So, I am not sure the message is benign in all circumstances. >> >> I'm a bit busy with a variety of other issues right now, but I >> should have some time this coming weekend to run any tests or >> patches that might help to pin this down. >> >> --=20 >> Garance Alistair Drosehn =3D gad@gilead.netel.rpi.edu >> Senior Systems Programmer or gad@freebsd.org >> Rensselaer Polytechnic Institute or drosih@rpi.edu=20 >=20 >=20 > .