From owner-freebsd-current@FreeBSD.ORG Mon Dec 19 17:12:31 2005 Return-Path: X-Original-To: freebsd-current@FreeBSD.ORG Delivered-To: freebsd-current@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 99E2E16A41F for ; Mon, 19 Dec 2005 17:12:31 +0000 (GMT) (envelope-from olli@lurza.secnetix.de) Received: from lurza.secnetix.de (lurza.secnetix.de [83.120.8.8]) by mx1.FreeBSD.org (Postfix) with ESMTP id BFD8D43D4C for ; Mon, 19 Dec 2005 17:12:30 +0000 (GMT) (envelope-from olli@lurza.secnetix.de) Received: from lurza.secnetix.de (ovsjiv@localhost [127.0.0.1]) by lurza.secnetix.de (8.13.4/8.13.4) with ESMTP id jBJHCSRc049138 for ; Mon, 19 Dec 2005 18:12:29 +0100 (CET) (envelope-from oliver.fromme@secnetix.de) Received: (from olli@localhost) by lurza.secnetix.de (8.13.4/8.13.1/Submit) id jBJHCS7A049137; Mon, 19 Dec 2005 18:12:28 +0100 (CET) (envelope-from olli) Date: Mon, 19 Dec 2005 18:12:28 +0100 (CET) Message-Id: <200512191712.jBJHCS7A049137@lurza.secnetix.de> From: Oliver Fromme To: freebsd-current@FreeBSD.ORG In-Reply-To: X-Newsgroups: list.freebsd-current User-Agent: tin/1.5.4-20000523 ("1959") (UNIX) (FreeBSD/4.11-STABLE (i386)) X-Mailman-Approved-At: Mon, 19 Dec 2005 17:18:40 +0000 Cc: Subject: Re: "Native" journaling file systems? X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: freebsd-current@FreeBSD.ORG List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 19 Dec 2005 17:12:31 -0000 Svein Halvor Halvorsen wrote: > On 12/19/05, Justin Smith wrote: > > Are there any plans to develop UFS3--- i.e., a UFS2 file system with an > > added journal? > > Take a look at the gjournal system developed by Ivan Voras as a Google > Summer of Code project. I don't know how stable that is, but it's > probably worth a look. > > http://ivoras.sharanet.org/freebsd/gjournal.html It has one problem: After a crash, you cannot simply replay the journal in order to get the file system into a consistent state. You still have to run a full-blown fsck. That problem renders gjournal rather useless. > Also; Read-only XFS support was commited to 7.0 last week. Write > support is probably comming when the developer has time to write it. I would very much hope so (even though it is GPL so it can never replace UFS in FreeBSD). But write support is probably ten times more complex than read-only support, so that's a huge amount of work. I wouldn't hold my breath. Best regards Oliver -- Oliver Fromme, secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing Dienstleistungen mit Schwerpunkt FreeBSD: http://www.secnetix.de/bsd Any opinions expressed in this message may be personal to the author and may not necessarily reflect the opinions of secnetix in any way. "I started using PostgreSQL around a month ago, and the feeling is similar to the switch from Linux to FreeBSD in '96 -- 'wow!'." -- Oddbjorn Steffensen