From owner-freebsd-stable@FreeBSD.ORG  Sun Jul 22 10:06:54 2012
Return-Path: <owner-freebsd-stable@FreeBSD.ORG>
Delivered-To: freebsd-stable@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 5B8F1106564A;
	Sun, 22 Jul 2012 10:06:54 +0000 (UTC)
	(envelope-from Holger.Kipp@alogis.com)
Received: from alogis.com (firewall.solit-ag.de [212.184.102.1])
	by mx1.freebsd.org (Postfix) with ESMTP id D1C1D8FC15;
	Sun, 22 Jul 2012 10:06:53 +0000 (UTC)
Received: from msx3.exchange.alogis.com (msx3exchange.alogis.com [10.1.1.6]
	(may be forged))
	by alogis.com (8.13.4/8.13.1) with ESMTP id q6MA290u074864;
	Sun, 22 Jul 2012 12:02:10 +0200 (CEST)
	(envelope-from Holger.Kipp@alogis.com)
Received: from MSX3.exchange.alogis.com ([fe80::c8ed:428a:a157:b61]) by
	msx3.exchange.alogis.com ([fe80::c8ed:428a:a157:b61%13]) with mapi id
	14.01.0255.000; Sun, 22 Jul 2012 12:02:03 +0200
From: Holger Kipp <Holger.Kipp@alogis.com>
To: James Snow <snow@teardrop.org>
Thread-Topic: Checksum errors across ZFS array
Thread-Index: AQHNZcSEbl6XSRsaOk2X1emR2Ezk6JcwtFgAgAAC3wCAAW8JAIAAeQ0AgAAGmYCAAAKFAIACbiGe
Date: Sun, 22 Jul 2012 10:02:02 +0000
Message-ID: <81B54AB0-1528-4A31-8090-2A8AB4A051C3@alogis.com>
References: <20120719152909.GL32960@teardrop.org>
	<002D6A20-D2A4-4909-B2EA-3DB562326050@tao.org.uk>
	<20120719171548.GM32960@teardrop.org>
	<BC2AD7AE-4D82-4989-9D51-F1F2329C00EB@tao.org.uk>
	<20120720222244.GA18627@teardrop.org>
	<5009DFBD.4080106@FreeBSD.org>,<20120720225522.GB18627@teardrop.org>
In-Reply-To: <20120720225522.GB18627@teardrop.org>
Accept-Language: en-GB, de-DE, en-US
Content-Language: de-DE
X-MS-Has-Attach: 
X-MS-TNEF-Correlator: 
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0
Cc: Dr Josef Karthauser <joe@tao.org.uk>, Doug Barton <dougb@freebsd.org>,
	"freebsd-stable@freebsd.org" <freebsd-stable@freebsd.org>
Subject: Re: Checksum errors across ZFS array
X-BeenThere: freebsd-stable@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Production branch of FreeBSD source code <freebsd-stable.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>, 
	<mailto:freebsd-stable-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-stable>
List-Post: <mailto:freebsd-stable@freebsd.org>
List-Help: <mailto:freebsd-stable-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>,
	<mailto:freebsd-stable-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 22 Jul 2012 10:06:54 -0000


Am 21.07.2012 um 00:57 schrieb "James Snow" <snow@teardrop.org>:

> On Fri, Jul 20, 2012 at 03:46:21PM -0700, Doug Barton wrote:
>>
>> You probably know this already, but just in case ... Software memory
>> tests cannot tell you conclusively that memory is good, only that it's
>> bad.
>
> I may have known that in a past life but certainly wasn't thinking about
> it now.
>
>> To make sure it's good you need a hardware tester.
>
> Is there one you'd recommend?

I usually found "make buildworld" to be pretty good at finding faulty memor=
y (within a few minutes) whilst memtest was running for hours without findi=
ng anything.

Holger


--
Holger Kipp
Diplom-Mathematiker
Senior Consultant

Tel. : +49 30 436 58 114
Fax. : +49 30 436 58 214
Mobil: +49 178 36 58 114
Email: holger.kipp@alogis.com

alogis AG
Alt-Moabit 90b
D-10559 Berlin

web : http://www.alogis.com

----------------------------------------------------------

alogis AG
Sitz/Registergericht: Berlin/AG Charlottenburg, HRB 71484
Vorstand: Arne Friedrichs, Joern Samuelson
Aufsichtsratsvorsitzender: Reinhard Mielke