From owner-freebsd-hardware@FreeBSD.ORG  Wed May 28 20:39:07 2003
Return-Path: <owner-freebsd-hardware@FreeBSD.ORG>
Delivered-To: freebsd-hardware@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 72C8837B401
	for <freebsd-hardware@freebsd.org>;
	Wed, 28 May 2003 20:39:07 -0700 (PDT)
Received: from Shenton.org (23.ebbed1.client.atlantech.net [209.190.235.35])
	by mx1.FreeBSD.org (Postfix) with SMTP id 9B31743F85
	for <freebsd-hardware@freebsd.org>;
	Wed, 28 May 2003 20:39:05 -0700 (PDT)
	(envelope-from chris@Shenton.Org)
Received: (qmail 13449 invoked by uid 1000); 29 May 2003 03:39:04 -0000
To: current@freebsd.org, freebsd-hardware@freebsd.org
From: Chris Shenton <chris@shenton.org>
Date: 28 May 2003 23:39:04 -0400
Message-ID: <87add6o207.fsf@Pectopah.shenton.org>
Lines: 37
User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Subject: DELL CERC amr RAID card beeping, dead drive? how to diagnose/fix?
X-BeenThere: freebsd-hardware@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: General discussion of FreeBSD hardware
	<freebsd-hardware.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hardware>,
	<mailto:freebsd-hardware-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hardware>
List-Post: <mailto:freebsd-hardware@freebsd.org>
List-Help: <mailto:freebsd-hardware-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hardware>,
	<mailto:freebsd-hardware-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 29 May 2003 03:39:07 -0000

I have a DELL 600SC which came with a DELL CERC RAID controller.  It's
recognized by FreeBSD-CURRENT as an "amr" device even though it's got
four ATA disk channels on it instead of the documented SCSI drives for
the PERC controller.  I have 4x WD1200JB ATA 120GB disks on it which
have been running fine for a few months as a set of RAID-5 volumes.
>From "dmesg":

  amrd0: <LSILogic MegaRAID logical drive> on amr0
  amrd0: 9999MB (20477952 sectors) RAID 5 (optimal)
  amrd1: <LSILogic MegaRAID logical drive> on amr0
  amrd1: 111093MB (227518464 sectors) RAID 5 (optimal)
  amrd2: <LSILogic MegaRAID logical drive> on amr0
  amrd2: 111093MB (227518464 sectors) RAID 5 (optimal)
  amrd3: <LSILogic MegaRAID logical drive> on amr0
  amrd3: 111099MB (227530752 sectors) RAID 5 (optimal)

An hour ago, it started beeping at me.  I suspect this is the CERC
card warning me that one of the disk drives has failed and that I'd
better do something about it. :-(

Is there a way to diagnose it from a live system, to query which of
the four ATA drives it thinks is dead, so I can replace it?

(Seems to me that a WD1200JB drive should last a lot longer than a few
months it's been running, in a properly ventilated DELL box; any ideas?)

Anyone have experience with this CERC controller and replacing a
drive?  My biggest fear is that I haven't tested the RAID rebuild and
that even when I do replace the failed (?) drive it won't do the
automatic rebuild and save my data.

Other suggestions?

Thanks.