From owner-freebsd-fs@FreeBSD.ORG  Sat Oct  9 13:55:58 2010
Return-Path: <owner-freebsd-fs@FreeBSD.ORG>
Delivered-To: freebsd-fs@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id E946D106566B
	for <freebsd-fs@freebsd.org>; Sat,  9 Oct 2010 13:55:58 +0000 (UTC)
	(envelope-from hywel@hmallett.co.uk)
Received: from lisbon.directrouter.com (lisbon.directrouter.com
	[72.249.30.130])
	by mx1.freebsd.org (Postfix) with ESMTP id C70288FC25
	for <freebsd-fs@freebsd.org>; Sat,  9 Oct 2010 13:55:58 +0000 (UTC)
Received: from [83.60.14.249] (helo=[192.168.1.36])
	by lisbon.directrouter.com with esmtpsa (TLSv1:AES128-SHA:128)
	(Exim 4.69) (envelope-from <hywel@hmallett.co.uk>)
	id 1P4Ztz-0002Wg-9I; Sat, 09 Oct 2010 08:55:55 -0500
References: <4CAD6A44.8010707@telus.net>
	<4813F683-1FF0-4DC4-9BC0-A512258C81CA@hmallett.co.uk>
	<4CAE8E67.3080201@telus.net>
In-Reply-To: <4CAE8E67.3080201@telus.net>
Mime-Version: 1.0 (iPhone Mail 8B117)
Content-Transfer-Encoding: quoted-printable
Content-Type: text/plain;
	charset=us-ascii
Message-Id: <C003FC3B-CCA5-46D4-BFFD-ED60B1080F95@hmallett.co.uk>
X-Mailer: iPhone Mail (8B117)
From: Hywel Mallett <hywel@hmallett.co.uk>
Date: Sat, 9 Oct 2010 15:52:41 +0200
To: Carl <k0802647@telus.net>
X-AntiAbuse: This header was added to track abuse,
	please include it with any abuse report
X-AntiAbuse: Primary Hostname - lisbon.directrouter.com
X-AntiAbuse: Original Domain - freebsd.org
X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12]
X-AntiAbuse: Sender Address Domain - hmallett.co.uk
X-Source: 
X-Source-Args: 
X-Source-Dir: 
Cc: "freebsd-fs@freebsd.org" <freebsd-fs@freebsd.org>
Subject: Re: Should gmirrored gjournal provider have auto-synchronization?
X-BeenThere: freebsd-fs@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Filesystems <freebsd-fs.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-fs>,
	<mailto:freebsd-fs-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-fs>
List-Post: <mailto:freebsd-fs@freebsd.org>
List-Help: <mailto:freebsd-fs-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-fs>,
	<mailto:freebsd-fs-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 09 Oct 2010 13:55:59 -0000

On 8 Oct 2010, at 05:22, Carl <k0802647@telus.net> wrote:

> On 2010-10-07 3:21 PM, Hywel Mallett wrote:
>> gmirror guarantees that a collection of
>> writes either happens in it's entirety, or not at all.
>=20
> My admittedly limited understanding of gmirror is that it makes no such gu=
arantee. I think it is gjournal that guarantees the consistency of the file s=
ystem that sits on top of it, not gmirror, and this would be true even if th=
ere were no gmirror below it.=20
You are correct. I wrote gmirror in that sentence, but I meant gjournal.=20=