From owner-freebsd-current@FreeBSD.ORG Wed Oct 8 19:05:50 2003 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 DA90116A4B3 for ; Wed, 8 Oct 2003 19:05:50 -0700 (PDT) Received: from carver.gumbysoft.com (carver.gumbysoft.com [66.220.23.50]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0F90E43FBD for ; Wed, 8 Oct 2003 19:05:50 -0700 (PDT) (envelope-from dwhite@gumbysoft.com) Received: by carver.gumbysoft.com (Postfix, from userid 1000) id EE77D72DA3; Wed, 8 Oct 2003 19:05:49 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by carver.gumbysoft.com (Postfix) with ESMTP id EBF5972DA2; Wed, 8 Oct 2003 19:05:49 -0700 (PDT) Date: Wed, 8 Oct 2003 19:05:49 -0700 (PDT) From: Doug White To: Kris Kennaway In-Reply-To: <20031008013014.GA73539@rot13.obsecurity.org> Message-ID: <20031008190451.E50563@carver.gumbysoft.com> References: <20031007040349.GA10406@ergobrains.co.jp> <20031008013014.GA73539@rot13.obsecurity.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII cc: freebsd-current@freebsd.org cc: YONETANI Tomokazu Subject: Re: savecore: first and last dump headers disagree on /dev/ad0b 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: Thu, 09 Oct 2003 02:05:51 -0000 On Tue, 7 Oct 2003, Kris Kennaway wrote: > On Tue, Oct 07, 2003 at 06:11:30PM -0700, Doug White wrote: > > On Tue, 7 Oct 2003, YONETANI Tomokazu wrote: > > > > > The hardware is IBM NetFinity 6000R, and it has ServerWorks ROSB4 UDMA33 > > > controller, to which the IDE disk is attached. The size of the IDE hard > > > disk is 4Gbytes, and the size of the kernel dump and physical memory both > > > fits in that size. > > > > The ROSB4 is known to have data-corruption problems with running in UDMA > > mode. The dump is probably tripping over this, which is why Tor's patch > > works since it demotes the device back to PIO. > > I also had problems dumping onto a UDMA66 disk on a promise PDC20267 > controller - it seemed to dump OK (dump was readable after I recovered > the disk), but it (or maybe the crash itself) trashed the partition > table. > Well that woudl be funny since the problem boards were replaced with Tyan S2518s, which have a PDC20267 onboard as well as the ROSB4. The disks were attached to the Promise, and never had any data corruption issues with them, at least under linnex. -- Doug White | FreeBSD: The Power to Serve dwhite@gumbysoft.com | www.FreeBSD.org