From owner-freebsd-sparc64@FreeBSD.ORG  Fri Jan  4 14:48:55 2013
Return-Path: <owner-freebsd-sparc64@FreeBSD.ORG>
Delivered-To: freebsd-sparc64@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by hub.freebsd.org (Postfix) with ESMTP id 2FB5AA01;
 Fri,  4 Jan 2013 14:48:55 +0000 (UTC)
 (envelope-from yanegomi@gmail.com)
Received: from mail-oa0-f44.google.com (mail-oa0-f44.google.com
 [209.85.219.44]) by mx1.freebsd.org (Postfix) with ESMTP id E6B78765;
 Fri,  4 Jan 2013 14:48:54 +0000 (UTC)
Received: by mail-oa0-f44.google.com with SMTP id n5so15239417oag.3
 for <multiple recipients>; Fri, 04 Jan 2013 06:48:48 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113;
 h=mime-version:in-reply-to:references:date:message-id:subject:from:to
 :cc:content-type;
 bh=QSbxuWjuOsaww8eKNLi9uf5vg30QA97c2n+xREbJUDw=;
 b=E0WcoBERq2LWdQVDXwQizXCtwzohgwcBmFdB4Ei7UflahXtFzr3SMVN6pOFzHYS0qs
 5nG6nG8aPsnDkkWmuHfTSkgyVk1qVg/U+pneiyOCDxYrF1g8ncRtPO1RDTtYJGPmVgRd
 lavJGZ0ZLuz/X/xcc4ajYlt09Jwql8JsC55ulJyPWApr4JxsD21j3rTMXuRYMFljqWaG
 e7iXJYmvM+JxLwY9jra4DQA9bfRv8SOo5ZnyQbKQrIZU/x0s3lWB2utTTjqcTTeUAx9l
 bParO4ipG5pymI4eP4+vOrkwmiQhBPRGRmaF1CJ3n1jTebQyksIxYv+1wgHwDp4v8OsY
 5Jxw==
MIME-Version: 1.0
Received: by 10.60.0.165 with SMTP id 5mr30829300oef.128.1357310928561; Fri,
 04 Jan 2013 06:48:48 -0800 (PST)
Received: by 10.76.143.33 with HTTP; Fri, 4 Jan 2013 06:48:48 -0800 (PST)
In-Reply-To: <201301041123.r04BNwTU014117@mech-cluster241.men.bris.ac.uk>
References: <201301041109.r04B97QU001888@mech-cluster241.men.bris.ac.uk>
 <201301041123.r04BNwTU014117@mech-cluster241.men.bris.ac.uk>
Date: Fri, 4 Jan 2013 06:48:48 -0800
Message-ID: <CAGH67wSCQvc2jway0MshPgRibnapC3q+Au58JtgN+4dEwjv30Q@mail.gmail.com>
Subject: Re: installworld error: ad0: FAILURE - READ_DMA status=51<READY, DSC, 
 ERROR> error=40<UNCORRECTABLE> LBA=28071584
From: Garrett Cooper <yanegomi@gmail.com>
To: mexas@bristol.ac.uk
Content-Type: text/plain; charset=ISO-8859-1
Cc: freebsd-current@freebsd.org, freebsd-sparc64@freebsd.org
X-BeenThere: freebsd-sparc64@freebsd.org
X-Mailman-Version: 2.1.14
Precedence: list
List-Id: Porting FreeBSD to the Sparc <freebsd-sparc64.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-sparc64>, 
 <mailto:freebsd-sparc64-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-sparc64>
List-Post: <mailto:freebsd-sparc64@freebsd.org>
List-Help: <mailto:freebsd-sparc64-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-sparc64>,
 <mailto:freebsd-sparc64-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 04 Jan 2013 14:48:55 -0000

On Fri, Jan 4, 2013 at 3:23 AM, Anton Shterenlikht <mexas@bristol.ac.uk> wrote:

...

> Is my disk dying?

Uncorrectable read errors suggest yes (especially because the LBA
varies between the two error messages). I would definitely backup your
data at the very least, and as others suggested use smartmontools [via
a livecd?].
Cheers,
-Garrett