From owner-freebsd-hackers@FreeBSD.ORG Sun Mar 14 02:47:21 2004 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 0F33316A4CE for ; Sun, 14 Mar 2004 02:47:21 -0800 (PST) Received: from www.kukulies.org (www.kukulies.org [213.146.112.180]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0CD1943D2D for ; Sun, 14 Mar 2004 02:47:20 -0800 (PST) (envelope-from kuku@www.kukulies.org) Received: from www.kukulies.org (localhost [127.0.0.1]) by www.kukulies.org (8.12.10/8.12.10) with ESMTP id i2EAlH7Z016248 for ; Sun, 14 Mar 2004 11:47:18 +0100 (CET) (envelope-from kuku@www.kukulies.org) Received: (from kuku@localhost) by www.kukulies.org (8.12.10/8.12.10/Submit) id i2EAlHeN016247 for freebsd-hackers@freebsd.org; Sun, 14 Mar 2004 11:47:17 +0100 (CET) (envelope-from kuku) Date: Sun, 14 Mar 2004 11:47:17 +0100 From: "Christoph P. Kukulies" To: freebsd-hackers@freebsd.org Message-ID: <20040314104717.GA16158@gilberto.physik.rwth-aachen.de> References: <20040311153709.AD00216A4D6@hub.freebsd.org> <20040311174030.GB8190@tikitechnologies.com> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.4.1i Subject: Re: off topic - disk crash X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 14 Mar 2004 10:47:21 -0000 On Fri, Mar 12, 2004 at 03:58:16PM +0100, Dag-Erling Smørgrav wrote: > Clifton Royston writes: > > > Today an important (no backup of course) 46 GB IBM Deskstar > > > IDE disk crashed. > > This specific line of drives is infamous for a failure rate that's at > > least a full order of magnitude above the industry average for ATA > > drives. Google a bit for it. > > Not the entire DeskStar line, just the 75GXP series. I still have > several 16Gs and at least one 60GXP that have never given me any > trouble, and they were fast and silent for their time, head and > shoulders ahead of the competition. These days I mostly buy WD... > > > > The disk boots into FreeBSD but already at power on time the disk does > > > seek retries or some recalibration noise. > > Also known as the "click of death"... Thanks for all the helpful tips so far. It is a DLTA 307045 (3.5") Don't know whether this is a 75GXP. I'm getting either these: ad2: TIMEOUT - READ_DMA retrying (2 retries left) LBA=30583 Which don't stop the dd process. And these, ad2: FAILURE - READ_DMA status=51 error=40 LBA=9156 leading to termination. Also the transfer rate is terribly slow: (80 KB/s) I was able to save 18 MB (of 46 GB) (not much so far) Any other suggestions? Could I increase the retry count? Or enforce continuation even in case of hard errors? So that with a bit of luck I could find the FS later in the dump and be able to restore at least partially some files? -- Chris Christoph P. U. Kukulies kuku_at_physik.rwth-aachen.de