From owner-freebsd-stable@FreeBSD.ORG Wed Jun 8 12:52:54 2005 Return-Path: X-Original-To: freebsd-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 7B87216A41C for ; Wed, 8 Jun 2005 12:52:54 +0000 (GMT) (envelope-from delphij@frontfree.net) Received: from tarsier.geekcn.org (tarsier.geekcn.org [210.51.165.229]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0358743D48 for ; Wed, 8 Jun 2005 12:52:53 +0000 (GMT) (envelope-from delphij@frontfree.net) Received: from beastie.frontfree.net (unknown [219.239.99.7]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by tarsier.geekcn.org (Postfix) with ESMTP id 0E39FEB17B7 for ; Wed, 8 Jun 2005 20:52:50 +0800 (CST) Received: from localhost (localhost.frontfree.net [127.0.0.1]) by beastie.frontfree.net (Postfix) with ESMTP id AEDEF1327FF; Wed, 8 Jun 2005 20:52:47 +0800 (CST) Received: from beastie.frontfree.net ([127.0.0.1]) by localhost (beastie.frontfree.net [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 45211-07; Wed, 8 Jun 2005 20:52:40 +0800 (CST) Received: by beastie.frontfree.net (Postfix, from userid 1001) id 676C61317B4; Wed, 8 Jun 2005 20:52:39 +0800 (CST) Date: Wed, 8 Jun 2005 20:52:39 +0800 From: Xin LI To: Pierre DAVID Message-ID: <20050608125239.GA45279@frontfree.net> References: <20050608123137.GA6872@vagabond.ma.maison> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="WIyZ46R2i8wDzkSu" Content-Disposition: inline In-Reply-To: <20050608123137.GA6872@vagabond.ma.maison> User-Agent: Mutt/1.4.2.1i X-GPG-key-ID/Fingerprint: 0xCAEEB8C0 / 43B8 B703 B8DD 0231 B333 DC28 39FB 93A0 CAEE B8C0 X-GPG-Public-Key: http://www.delphij.net/delphij.asc X-Operating-System: FreeBSD beastie.frontfree.net 5.4-RELEASE-p1 FreeBSD 5.4-RELEASE-p1 #1: Fri May 27 00:47:15 CST 2005 delphij@beastie.frontfree.net:/usr/obj/usr/src/sys/BEASTIE i386 X-URL: http://www.delphij.net X-By: delphij@beastie.frontfree.net X-Location: Beijing, China X-Virus-Scanned: amavisd-new at frontfree.net Cc: freebsd-stable@freebsd.org Subject: Re: Show stopper for large disks with 5.4-RELEASE X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 08 Jun 2005 12:52:54 -0000 --WIyZ46R2i8wDzkSu Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi, Pierre, On Wed, Jun 08, 2005 at 02:31:37PM +0200, Pierre DAVID wrote: > Hi, >=20 > we are setting up a mail server for ~50 000 users, with around 1.8TB > on a DAS storage (HP MSA 500). >=20 > We were planning to use FreeBSD (5.4-RELEASE), as with all other > servers in our machine room. >=20 > However, we are encountering a show stopper: after an unclean > shutdown, the snapshot that fsck creates is taking too much time > (more than 20 minutes). During the most part of this time, all I/O > are frozen on this large disk, so the server cannot serve our > clients. Our SLA constraints do not allow us to have these recovery > times. Would you please provide a bit more of information so we can investigate what was happening, like: - first few lines dumpfs(8) output from your storage filesystem - df -i on your storag filesystem - dmesg.boot from your /var/run I think the delay is too long. Taking a snapshot on a large volume is slow, but should not be that slow :-) We run similiar mail server at company, but with ~10x of users and 2x storage (divided into two RAID groups). Hope I would be able to provide some help. Cheers, --=20 Xin LI http://www.delphij.net/ See complete headers for GPG key and other information. --WIyZ46R2i8wDzkSu Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (FreeBSD) iD8DBQFCpuoX/cVsHxFZiIoRAmMMAKCB1QOwzZe+vfZrfiWFBPoZMZZFmACgiCAb azo2W+iKrbXUqNuuBVUkgrM= =MB6P -----END PGP SIGNATURE----- --WIyZ46R2i8wDzkSu--