From owner-freebsd-stable@FreeBSD.ORG Wed Sep 13 14:24:04 2006 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 7AF5716A4AB for ; Wed, 13 Sep 2006 14:24:04 +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 E5B8A43D7C for ; Wed, 13 Sep 2006 14:23:47 +0000 (GMT) (envelope-from pjd@garage.freebsd.pl) Received: by mail.garage.freebsd.pl (Postfix, from userid 65534) id D284F48A31; Wed, 13 Sep 2006 16:23:45 +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 3593748A25; Wed, 13 Sep 2006 16:23:41 +0200 (CEST) Date: Wed, 13 Sep 2006 16:23:29 +0200 From: Pawel Jakub Dawidek To: Christian Laursen Message-ID: <20060913142329.GC70245@garage.freebsd.pl> References: <45066E19.2040405@kuehlbox.de> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="HWvPVVuAAfuRc6SZ" Content-Disposition: inline In-Reply-To: X-PGP-Key-URL: http://people.freebsd.org/~pjd/pjd.asc X-OS: FreeBSD 7.0-CURRENT i386 User-Agent: mutt-ng/devel-r804 (FreeBSD) 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: freebsd-stable@freebsd.org Subject: Re: gjournal and Softupdates 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, 13 Sep 2006 14:24:04 -0000 --HWvPVVuAAfuRc6SZ Content-Type: text/plain; charset=iso-8859-2 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Sep 12, 2006 at 12:04:01PM +0200, Christian Laursen wrote: > Ivan Voras writes: >=20 > > - todays desktop drives can lie about writing data. SoftUpdates relies > > on some assumptions about when the data is physically written to > > media, and those are not always valid today >=20 > I think journaling relies on the same assumptions. Not gjournal, because it uses BIO_FLUSH I/O requests which flushes disk write cache when needed. --=20 Pawel Jakub Dawidek http://www.wheel.pl pjd@FreeBSD.org http://www.FreeBSD.org FreeBSD committer Am I Evil? Yes, I Am! --HWvPVVuAAfuRc6SZ Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (FreeBSD) iD8DBQFFCBRhForvXbEpPzQRAg+FAKCYMD1uZ4ppB0+SKQ83F1zac3Tl5wCfbGtu eWoun4Ozf4ajchr2V9ALZc8= =hEmD -----END PGP SIGNATURE----- --HWvPVVuAAfuRc6SZ--