From owner-freebsd-fs@FreeBSD.ORG  Sat Oct  2 12:25:52 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 AC7D4106566C
	for <freebsd-fs@freebsd.org>; Sat,  2 Oct 2010 12:25:52 +0000 (UTC)
	(envelope-from bruce@cran.org.uk)
Received: from muon.cran.org.uk (unknown [IPv6:2a01:348:0:15:5d59:5c40:0:1])
	by mx1.freebsd.org (Postfix) with ESMTP id 417838FC08
	for <freebsd-fs@freebsd.org>; Sat,  2 Oct 2010 12:25:52 +0000 (UTC)
Received: from muon.cran.org.uk (localhost [127.0.0.1])
	by muon.cran.org.uk (Postfix) with ESMTP id 58CB1E7F74;
	Sat,  2 Oct 2010 13:25:51 +0100 (BST)
Received: from unknown (client-82-31-11-222.midd.adsl.virginmedia.com
	[82.31.11.222])
	(using TLSv1 with cipher DHE-RSA-AES128-SHA (128/128 bits))
	(No client certificate requested)
	by muon.cran.org.uk (Postfix) with ESMTPSA;
	Sat,  2 Oct 2010 13:25:50 +0100 (BST)
Date: Sat, 2 Oct 2010 13:25:48 +0100
From: Bruce Cran <bruce@cran.org.uk>
To: Phan Quoc Hien <phanquochien@gmail.com>
Message-ID: <20101002132548.00002898@unknown>
In-Reply-To: <AANLkTik53kP7K-EcHy=uO2QdAJe5r7MvJxmbsCQ_b0Ye@mail.gmail.com>
References: <AANLkTi=eib81J1zUT_HmPcXOBFiLDFmyA8Q-KZV5HikE@mail.gmail.com>
	<op.vjx6e4o08527sy@212-123-145-58.ip.telfort.nl>
	<AANLkTik53kP7K-EcHy=uO2QdAJe5r7MvJxmbsCQ_b0Ye@mail.gmail.com>
X-Mailer: Claws Mail 3.7.6 (GTK+ 2.16.6; i586-pc-mingw32msvc)
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Cc: freebsd-fs@freebsd.org, Ronald Klop <ronald-freebsd8@klop.yi.org>
Subject: Re: Data loss when hard shutdown!
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, 02 Oct 2010 12:25:52 -0000

On Sat, 2 Oct 2010 19:19:12 +0700
Phan Quoc Hien <phanquochien@gmail.com> wrote:

> Thanks for your respond.!
> Yes. I pulled the power plug .
> I edited rc.conf and save it then pulling the power plug. And system
> boot next time rc.conf is a blank file...!

This is an issue when using SoftUpdates - data isn't written to disk
immediately, and empty files are produced when power is lost. See
http://www.freebsd.org/doc/en/books/faq/disks.html#SAFE-SOFTUPDATES for
details. 

-- 
Bruce Cran