From owner-freebsd-stable@FreeBSD.ORG  Sun Apr 23 20:17:34 2006
Return-Path: <owner-freebsd-stable@FreeBSD.ORG>
X-Original-To: stable@FreeBSD.org
Delivered-To: freebsd-stable@FreeBSD.ORG
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 761C816A406
	for <stable@FreeBSD.org>; Sun, 23 Apr 2006 20:17:34 +0000 (UTC)
	(envelope-from kris@obsecurity.org)
Received: from elvis.mu.org (elvis.mu.org [192.203.228.196])
	by mx1.FreeBSD.org (Postfix) with ESMTP id B54B943D4C
	for <stable@FreeBSD.org>; Sun, 23 Apr 2006 20:17:33 +0000 (GMT)
	(envelope-from kris@obsecurity.org)
Received: from obsecurity.dyndns.org (elvis.mu.org [192.203.228.196])
	by elvis.mu.org (Postfix) with ESMTP id 990C51A3C29;
	Sun, 23 Apr 2006 13:17:33 -0700 (PDT)
Received: by obsecurity.dyndns.org (Postfix, from userid 1000)
	id E46745564E; Sun, 23 Apr 2006 16:17:32 -0400 (EDT)
Date: Sun, 23 Apr 2006 16:17:32 -0400
From: Kris Kennaway <kris@obsecurity.org>
To: Dmitry Morozovsky <marck@rinet.ru>
Message-ID: <20060423201732.GA74905@xor.obsecurity.org>
References: <20060423193208.N1187@woozle.rinet.ru>
Mime-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha1;
	protocol="application/pgp-signature"; boundary="Nq2Wo0NMKNjxTN9z"
Content-Disposition: inline
In-Reply-To: <20060423193208.N1187@woozle.rinet.ru>
User-Agent: Mutt/1.4.2.1i
Cc: stable@FreeBSD.org
Subject: Re: fsck_ufs locked in snaplk
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, 23 Apr 2006 20:17:34 -0000


--Nq2Wo0NMKNjxTN9z
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Sun, Apr 23, 2006 at 07:35:37PM +0400, Dmitry Morozovsky wrote:
> Colleagues,
>=20
> one of my servers had to be rebooted uncleanly and then I have background=
ed=20
> fsck locked for more than an our in snaplk:
>=20
> 742 root         1  -4    4  1320K   688K snaplk   0:02  0.00% fsck_ufs
>=20
> File system in question is 200G gmirror on SATA. Usually making a snapsho=
t=20
> (e.g., for making dumps) consumes 3-4 minutes for that fs, so it seems to=
 me=20
> that filesystem is in a deadlock.

Is the process performing I/O?  Background fsck deliberately runs at a
slow rate so it does not destroy I/O performance on the rest of the
system.

Kris

--Nq2Wo0NMKNjxTN9z
Content-Type: application/pgp-signature
Content-Disposition: inline

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.3 (FreeBSD)

iD8DBQFES+DcWry0BWjoQKURAq0FAKCTjjTerD+Y5GfRa7V9M9w0F6+aVwCg6qz8
fgtmYX8SNME2jN+MKp0LSfo=
=Djk5
-----END PGP SIGNATURE-----

--Nq2Wo0NMKNjxTN9z--