From owner-freebsd-questions@FreeBSD.ORG  Mon Nov 21 01:32:05 2005
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
X-Original-To: freebsd-questions@freebsd.org
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 818B116A41F
	for <freebsd-questions@freebsd.org>;
	Mon, 21 Nov 2005 01:32:05 +0000 (GMT)
	(envelope-from dpkirchner@gmail.com)
Received: from xproxy.gmail.com (xproxy.gmail.com [66.249.82.194])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 1CCFE43D45
	for <freebsd-questions@freebsd.org>;
	Mon, 21 Nov 2005 01:32:04 +0000 (GMT)
	(envelope-from dpkirchner@gmail.com)
Received: by xproxy.gmail.com with SMTP id s9so514972wxc
	for <freebsd-questions@freebsd.org>;
	Sun, 20 Nov 2005 17:32:04 -0800 (PST)
DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com;
	h=received:message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references;
	b=Q91GnMGkPkjHn71QhvP55MKtSq6Gglre+ZudDK2LXq/nimqqkbjlwiTTx307D1HWvoWuKFA4pucYnzKqAYw0raEHfTiH07A5frirezblDVL7EiVsA2/etoe7/jqUXLbE9iQmJDRDJv+sdM9J1fSLBwkrrTnTkzKqJIkq4ZZbUaw=
Received: by 10.70.123.16 with SMTP id v16mr1575150wxc;
	Sun, 20 Nov 2005 17:32:04 -0800 (PST)
Received: by 10.70.104.18 with HTTP; Sun, 20 Nov 2005 17:32:04 -0800 (PST)
Message-ID: <35c231bf0511201732o22c4d765l1d40d7738bb0f8d6@mail.gmail.com>
Date: Sun, 20 Nov 2005 17:32:04 -0800
From: David Kirchner <dpk@dpk.net>
Sender: dpkirchner@gmail.com
To: Wojciech Puchar <wojtek@tensor.3miasto.net>
In-Reply-To: <20051121020105.S942@chylonia.3miasto.net>
MIME-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
Content-Disposition: inline
References: <20051121020105.S942@chylonia.3miasto.net>
Cc: freebsd-questions@freebsd.org
Subject: Re: background fsck
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 21 Nov 2005 01:32:05 -0000

On 11/20/05, Wojciech Puchar <wojtek@tensor.3miasto.net> wrote:
> what is the rule to decide if filesystem may be background checked or not=
?
>
> for example my / is checked foreground, while /home checked background.
>
> can't root partition be background checked too?

The root partition is probably checked in the foreground for safety
reasons, since the root partition is so critical to everything on the
server. Personally I don't use or trust background fscks -- when a
server comes back up after a crash, I'd rather it just finish the fsck
before coming up live, since the fsck does slow the server down
noticably (and if it was an already busy web server, this can be a
problem).

There's also the matter of serious problems with background fscks,
with open PRs:

http://www.freebsd.org/cgi/query-pr.cgi?pr=3Dkern/53137
http://www.freebsd.org/cgi/query-pr.cgi?pr=3Dkern/86423

and the less serious (since it is about UFS1):

http://www.freebsd.org/cgi/query-pr.cgi?pr=3Dkern/84589