From owner-freebsd-geom@FreeBSD.ORG Sun Apr 22 16:28:31 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 B9E0C16A400; Sun, 22 Apr 2007 16:28:31 +0000 (UTC) (envelope-from ivoras@fer.hr) Received: from ls405.t-com.hr (ls405.t-com.hr [195.29.150.135]) by mx1.freebsd.org (Postfix) with ESMTP id 448E713C45E; Sun, 22 Apr 2007 16:28:31 +0000 (UTC) (envelope-from ivoras@fer.hr) Received: from ls248.t-com.hr (ls248.t-com.hr [195.29.150.237]) by ls405.t-com.hr (Postfix) with ESMTP id 0C194144086; Sun, 22 Apr 2007 18:28:24 +0200 (CEST) Received: from ls248.t-com.hr (ls248.t-com.hr [127.0.0.1]) by ls248.t-com.hr (Qmlai) with ESMTP id 07348D50051; Sun, 22 Apr 2007 18:28:24 +0200 (CEST) Received: from ls248.t-com.hr (ls248.t-com.hr [127.0.0.1]) by ls248.t-com.hr (Qmlai) with ESMTP id D96C2D5004A; Sun, 22 Apr 2007 18:28:23 +0200 (CEST) X-Envelope-Sender-Info: g5URFa92gX9K/Rg9VFA/rK7Af78qf1/z4pTs7sG3zdc6StkSH1j7CT0zJW9WjWDV X-Envelope-Sender: ivoras@fer.hr Received: from [10.0.0.100] (89-172-244-220.adsl.net.t-com.hr [89.172.244.220]) by ls248.t-com.hr (Qmali) with ESMTP id A9D305E011A; Sun, 22 Apr 2007 18:28:23 +0200 (CEST) Message-ID: <462B8D25.3000303@fer.hr> Date: Sun, 22 Apr 2007 18:28:21 +0200 From: Ivan Voras User-Agent: Thunderbird 1.5.0.10 (Windows/20070221) MIME-Version: 1.0 To: Pawel Jakub Dawidek References: <20070422123852.GA52622@garage.freebsd.pl> <462B83D7.1010905@fer.hr> <20070422162601.GD52622@garage.freebsd.pl> In-Reply-To: <20070422162601.GD52622@garage.freebsd.pl> X-Enigmail-Version: 0.94.3.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig15334923F454E68A4415D27D" 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 16:28:31 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig15334923F454E68A4415D27D Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Pawel Jakub Dawidek wrote: > 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? AFAI= K >>>> the "async" handling of IO requests is done by the UFS, the writes a= re >>>> not rescheduled at the GEOM layer? >>> GJournal has some minimum knowledge about VFS. Before it does journal= >>> switch, it synchronize and suspends file system. This way we can be s= ure >>> everything is on disk in a consistent state. >> Thanks. So, this (async support) could actually work with other file >> systems, like ext2 and msdos? >=20 > Once gjournal is taught about them, yes. Then you're not interfacing in the VFS layer, you're hooking directly into UFS? --------------enig15334923F454E68A4415D27D Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFGK40lldnAQVacBcgRAk0+AKC8dl5aqeSqbaBRxtPQfUCv5X6zfwCfTARi VNVd/5ktJpUy/QdChEj69bA= =wPSp -----END PGP SIGNATURE----- --------------enig15334923F454E68A4415D27D--