From owner-freebsd-questions@FreeBSD.ORG Sat Feb 10 14:47:18 2007 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id B4EAC16A40F for ; Sat, 10 Feb 2007 14:47:18 +0000 (UTC) (envelope-from scrappy@freebsd.org) Received: from hub.org (hub.org [200.46.204.220]) by mx1.freebsd.org (Postfix) with ESMTP id 7D88A13C48D for ; Sat, 10 Feb 2007 14:47:18 +0000 (UTC) (envelope-from scrappy@freebsd.org) Received: from localhost (unknown [200.46.204.183]) by hub.org (Postfix) with ESMTP id 9EE32118B40A; Sat, 10 Feb 2007 10:47:12 -0400 (AST) Received: from hub.org ([200.46.204.220]) by localhost (mx1.hub.org [200.46.204.183]) (amavisd-new, port 10024) with ESMTP id 11697-03; Sat, 10 Feb 2007 10:47:17 -0400 (AST) Received: from ganymede.hub.org (blk-89-241-126.eastlink.ca [24.89.241.126]) by hub.org (Postfix) with ESMTP id 12D93118B3E4; Sat, 10 Feb 2007 10:47:11 -0400 (AST) Received: from localhost (localhost [127.0.0.1]) by ganymede.hub.org (Postfix) with ESMTP id E1E895DEC2; Sat, 10 Feb 2007 10:47:17 -0400 (AST) Date: Sat, 10 Feb 2007 10:47:17 -0400 From: "Marc G. Fournier" To: Dan Nelson Message-ID: <0121884CDA5AC278CD6A7D52@ganymede.hub.org> In-Reply-To: <20070210070020.GP37689@dan.emsphone.com> References: <5D4377994F77F6A6C215D198@ganymede.hub.org> <20070210070020.GP37689@dan.emsphone.com> X-Mailer: Mulberry/4.0.7 (Linux/x86) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: inline Cc: freebsd-questions@freebsd.org Subject: Re: Bad sector on drive ... X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 10 Feb 2007 14:47:18 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - --On Saturday, February 10, 2007 01:00:21 -0600 Dan Nelson wrote: > In the last episode (Feb 10), Marc G. Fournier said: >> Short of a reformat, any way of marking the following as bad? :( >> >> Feb 10 02:27:20 ganymede kernel: ad4: FAILURE - READ_DMA >> status=51 error=40 LBA=176887263 Feb 10 >> 02:27:25 ganymede kernel: ad4: TIMEOUT - READ_DMA retrying (1 retry left) >> LBA=176887324 Feb 10 02:27:30 ganymede kernel: ad4: TIMEOUT - READ_DMA >> retrying (0 retries left) LBA=176887324 Feb 10 02:27:35 ganymede kernel: >> ad4: FAILURE - READ_DMA timed out LBA=176887324 > > Try writing to the block causing the error, using dd and the seek= > option; if the write succeeds, you're done (and the drive will have > either reused the block or reassigned it to a spare). 176887324 If it doesn't > succeed, copy what you can off the drive and toss it, since all its > spares are used up. > > I think LBA numbers map directly to seek= values assuming you keep > bs=512 and access /dev/ad4 . I'd try reading the bad block with dd to > verify it's the right one before doing a write, though. 'k, how do you use dd to write to a specific sector? dd of=/dev/ad4 seek=176887324 bs=512 if=/dev/null - ---- Marc G. Fournier Hub.Org Networking Services (http://www.hub.org) Email . scrappy@hub.org MSN . scrappy@hub.org Yahoo . yscrappy Skype: hub.org ICQ . 7615664 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (FreeBSD) iD8DBQFFzdr14QvfyHIvDvMRAtdXAKC4Fjjd7tn8tjtqyQzO10NlYYBXTACgmYaa bTZ9nTHTrd6HzUJXWm1ND6I= =YBMq -----END PGP SIGNATURE-----