From owner-freebsd-current@FreeBSD.ORG Fri Aug 17 11:19:12 2007 Return-Path: Delivered-To: current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 00B6316A420; Fri, 17 Aug 2007 11:19:12 +0000 (UTC) (envelope-from pjd@garage.freebsd.pl) Received: from mail.garage.freebsd.pl (arm132.internetdsl.tpnet.pl [83.17.198.132]) by mx1.freebsd.org (Postfix) with ESMTP id 8DBEA13C480; Fri, 17 Aug 2007 11:19:11 +0000 (UTC) (envelope-from pjd@garage.freebsd.pl) Received: by mail.garage.freebsd.pl (Postfix, from userid 65534) id 5F3B845B26; Fri, 17 Aug 2007 13:19:10 +0200 (CEST) Received: from localhost (pjd.wheel.pl [10.0.1.1]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.garage.freebsd.pl (Postfix) with ESMTP id 7ECC245681; Fri, 17 Aug 2007 13:19:05 +0200 (CEST) Date: Fri, 17 Aug 2007 13:18:12 +0200 From: Pawel Jakub Dawidek To: Dag-Erling Sm??rgrav Message-ID: <20070817111812.GB9640@garage.freebsd.pl> References: <20070814165423.ebuvjb6dwswkgc8g@webmail.leidinger.net> <20070814153519.GA18648@rot26.obsecurity.org> <86643h3isp.fsf@ds4.des.no> <20070814213515.GA23492@rot26.obsecurity.org> <86d4xp21i3.fsf@ds4.des.no> <86lkccorig.fsf@ds4.des.no> <86tzqz5ia2.fsf@ds4.des.no> <86k5rv5eeg.fsf_-_@ds4.des.no> <20070817105604.GA9640@garage.freebsd.pl> <86bqd6ifjk.fsf@ds4.des.no> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="1UWUbFP1cBYEclgG" Content-Disposition: inline In-Reply-To: <86bqd6ifjk.fsf@ds4.des.no> User-Agent: Mutt/1.4.2.3i X-PGP-Key-URL: http://people.freebsd.org/~pjd/pjd.asc X-OS: FreeBSD 7.0-CURRENT i386 X-Spam-Checker-Version: SpamAssassin 3.0.4 (2005-06-05) on mail.garage.freebsd.pl X-Spam-Level: X-Spam-Status: No, score=-5.9 required=3.0 tests=ALL_TRUSTED,BAYES_00 autolearn=ham version=3.0.4 Cc: current@freebsd.org, mohans@freebsd.org Subject: Re: NFS hangs X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 17 Aug 2007 11:19:12 -0000 --1UWUbFP1cBYEclgG Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Aug 17, 2007 at 01:09:03PM +0200, Dag-Erling Sm??rgrav wrote: > Pawel Jakub Dawidek writes: > > Dag-Erling Sm??rgrav writes: > > > Starting to think it might be a server issue after all. The server r= uns > > > CURRENT from 2007-08-03. All exported file systems are ZFS; should I > > > try to disable the ZIL? That's the one part of ZFS I can think of th= at > > > would interact with NFS in a way other file systems don't. > > I can't see how ZIL can make any difference visible for NFS clients, > > except when your NFS server crashes. Although I'd keep ZFS on suspects > > list, as exporting ZFS file systems over NFS wasn't really heavily > > tested. >=20 > As I understand it, write operations pass through the ZIL to maintain > consistency? No consistency - ZFS is always consistent on disk, but without ZIL, for example fsync(2) is a no-op, which may confuse NFS clients in an event of NFS server crash. --=20 Pawel Jakub Dawidek http://www.wheel.pl pjd@FreeBSD.org http://www.FreeBSD.org FreeBSD committer Am I Evil? Yes, I Am! --1UWUbFP1cBYEclgG Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4 (FreeBSD) iD8DBQFGxYP0ForvXbEpPzQRAkN1AJ9Tpf84Yhkt/0jISCIjV6ZvthJQpACgxFau sq+hpVmHQP7vlQ7vODjddIg= =9RQO -----END PGP SIGNATURE----- --1UWUbFP1cBYEclgG--