From owner-freebsd-geom@FreeBSD.ORG Sun Apr 22 16:26:48 2007 Return-Path: X-Original-To: freebsd-geom@FreeBSD.org Delivered-To: freebsd-geom@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 71E9A16A403 for ; Sun, 22 Apr 2007 16:26:48 +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 1750B13C45E for ; Sun, 22 Apr 2007 16:26:47 +0000 (UTC) (envelope-from pjd@garage.freebsd.pl) Received: by mail.garage.freebsd.pl (Postfix, from userid 65534) id 75C1645CD9; Sun, 22 Apr 2007 18:26:46 +0200 (CEST) Received: from localhost (public-gprs38729.centertel.pl [91.94.23.121]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.garage.freebsd.pl (Postfix) with ESMTP id EF4DA456AB; Sun, 22 Apr 2007 18:26:34 +0200 (CEST) Date: Sun, 22 Apr 2007 18:26:01 +0200 From: Pawel Jakub Dawidek To: Ivan Voras Message-ID: <20070422162601.GD52622@garage.freebsd.pl> References: <20070422123852.GA52622@garage.freebsd.pl> <462B83D7.1010905@fer.hr> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="Q0rSlbzrZN6k9QnT" Content-Disposition: inline In-Reply-To: <462B83D7.1010905@fer.hr> 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=-2.5 required=3.0 tests=BAYES_00,RCVD_IN_NJABL_DUL autolearn=no version=3.0.4 Cc: freebsd-geom@FreeBSD.org Subject: Re: gjournal & async X-BeenThere: freebsd-geom@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: GEOM-specific discussions and implementations List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 22 Apr 2007 16:26:48 -0000 --Q0rSlbzrZN6k9QnT Content-Type: text/plain; charset=iso-8859-2 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sun, Apr 22, 2007 at 05:48:39PM +0200, Ivan Voras wrote: > Pawel Jakub Dawidek wrote: > > On Sun, Apr 22, 2007 at 02:43:29AM +0200, Ivan Voras wrote: > >> How does gjournal guarantee corectness if UFS is mounted async? AFAIK > >> the "async" handling of IO requests is done by the UFS, the writes are > >> not rescheduled at the GEOM layer? > >=20 > > GJournal has some minimum knowledge about VFS. Before it does journal > > switch, it synchronize and suspends file system. This way we can be sure > > everything is on disk in a consistent state. >=20 > Thanks. So, this (async support) could actually work with other file > systems, like ext2 and msdos? Once gjournal is taught about them, yes. --=20 Pawel Jakub Dawidek http://www.wheel.pl pjd@FreeBSD.org http://www.FreeBSD.org FreeBSD committer Am I Evil? Yes, I Am! --Q0rSlbzrZN6k9QnT Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (FreeBSD) iD8DBQFGK4yZForvXbEpPzQRAp6UAKChgbfkFMHYQw9XGYhC7R66VlrYFQCfUUrZ 8yunH3/Dcn5hDwePNJ4rDN4= =8Cyw -----END PGP SIGNATURE----- --Q0rSlbzrZN6k9QnT--