From owner-freebsd-questions@FreeBSD.ORG Mon Jun 16 12:37:18 2008 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 965E0106567D for ; Mon, 16 Jun 2008 12:37:18 +0000 (UTC) (envelope-from z.szalbot@lc-words.com) Received: from relay.lc-words.com (relay.lc-words.com [62.121.130.110]) by mx1.freebsd.org (Postfix) with ESMTP id 3515A8FC24 for ; Mon, 16 Jun 2008 12:37:18 +0000 (UTC) (envelope-from z.szalbot@lc-words.com) Received: from localhost (localhost [127.0.0.1]) by relay.lc-words.com (Postfix) with ESMTP id EF4E7C9426 for ; Mon, 16 Jun 2008 14:36:13 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=lc-words.com; s=mainlcwords; t=1213619774; bh=wpNbM8swYjKqOvh9I7vv4eGW1Q6jTcIVr56 RPV7Tjos=; h=Message-ID:Date:From:Reply-To:MIME-Version:To:Subject: Content-Type:Content-Transfer-Encoding; b=pNwMceOOSvS/MxQuWQLwovGF H1qJ6EwqUm2w65a9WoDzS7GPja6uILbficvZvTmD52cPvYNT2y18Yxcsesir3jvidz/ PihZ5/5xIu9lyYfU88ChzjDkEHL91cr69TtjPmGviTc7a5TmXHE/AUfTKWo/+YLG4g3 KZIAPF1yxZk4I= Received: from relay.lc-words.com ([127.0.0.1]) by localhost (relay.lc-words.com [127.0.0.1]) (amavisd-maia, port 10024) with ESMTP id 70419-10 for ; Mon, 16 Jun 2008 14:36:13 +0200 (CEST) Received: from [127.0.0.1] (aejs72.neoplus.adsl.tpnet.pl [79.186.252.72]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) (Authenticated sender: z.szalbot@lc-words.com) by relay.lc-words.com (Postfix) with ESMTPSA id 7CC75C9425 for ; Mon, 16 Jun 2008 14:36:13 +0200 (CEST) Message-ID: <48565E7A.50807@lc-words.com> Date: Mon, 16 Jun 2008 14:37:14 +0200 From: Zbigniew Szalbot User-Agent: Thunderbird 2.0.0.14 (Windows/20080421) MIME-Version: 1.0 To: freebsd-questions@freebsd.org Content-Type: text/plain; charset=ISO-8859-2; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: Maia Mailguard Subject: RAID 1 / disk error / Offline uncorrectable sectors X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: z.szalbot@lc-words.com List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 16 Jun 2008 12:37:18 -0000 Hello, I'd like to ask your advice. We have RAID 1 / SATA turned on in BIOS. A couple of days ago smartd let me know about a disk problem. Jun 14 01:13:38 relay kernel: ad12: FAILURE - READ_DMA48 status=51 error=40 LBA=374468863 Jun 14 01:13:38 relay kernel: ar0: WARNING - mirror protection lost. RAID1 array in DEGRADED mode Jun 14 01:14:19 relay kernel: ad12: WARNING - WRITE_DMA taskqueue timeout - completing request directly Jun 14 01:14:19 relay kernel: ad12: WARNING - WRITE_DMA48 freeing taskqueue zombie request Jun 14 01:37:38 relay smartd[683]: Device: /dev/ad12, 1 Currently unreadable (pending) sectors Jun 14 01:37:38 relay smartd[683]: Device: /dev/ad12, 1 Offline uncorrectable sectors If I do smarctl -a /dev/ad12 I get 197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 1 198 Offline_Uncorrectable 0x0010 100 100 000 Old_age Offline - 1 My understanding is that RAID 1 no longer works because of this error. There is a bad sector on HD (Offline uncorrectable sectors) and the best we can do is replace the drive? Does it make sense to try to turn RAID 1 on ignoring this error (however, this is done in BIOS so the machine would have to be taken down in order to do that)? It seems serious enough for me not to ignore it but then I know close to nothing about HDs. Many thanks for your suggestions! Zbigniew Szalbot