From owner-freebsd-current Sat Jul 22 12:17:28 2000 Delivered-To: freebsd-current@freebsd.org Received: from mail.targetnet.com (mail.targetnet.com [207.245.246.3]) by hub.freebsd.org (Postfix) with ESMTP id 5389837B69C for ; Sat, 22 Jul 2000 12:17:25 -0700 (PDT) (envelope-from james@targetnet.com) Received: from james by mail.targetnet.com with local (Exim 3.02 #1) id 13G4lz-0000ES-00; Sat, 22 Jul 2000 15:17:19 -0400 Date: Sat, 22 Jul 2000 15:17:19 -0400 From: James FitzGibbon To: "Thomas T. Veldhouse" Cc: freebsd-current@FreeBSD.ORG Subject: Re: Journaling Filesystem ? Message-ID: <20000722151719.B99818@targetnet.com> References: <017101bff34e$12ca9c10$dd29680a@tgt.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 1.0pre1i In-Reply-To: <017101bff34e$12ca9c10$dd29680a@tgt.com> Organization: Targetnet.com Inc. Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG * Thomas T. Veldhouse (veldy@veldy.net) [000721 16:01]: > Hello. I was wondering if there is any work on a Journaling filesystem to > possible replace, or as an alternative to UFS. I have been following > ReiserFS for Linux quite closely, and I have had the chance to experiment > with it. It seems to be coming along nicely and the performance is great. > Are there plans for something along this line for FreeBSD? Is there a > project underway? At the Usenix 2000 Conference, a paper comparing Softupdates to a Journalling Filesystem was presented. The author said that the tests were performed on a FreeBSD box. AFAIK, the code is not yet available, but one of the other attendees mentioned that it would be 'some time in the near future'. The journally system allowed for the journal to exist as a file on the filesystem in question, or on a separate partition (which would be mounted synchronously to provide a level of protection from crashes). That having been said, the performance of the filesystem was not significantly different from softupdates. You can get at the paper if you're a Usenix member. The authors included Margo Selzer and Kirk McKusick, but the talk was given by another of the authors whose name I can't recall at the moment. -- j. James FitzGibbon james@targetnet.com Targetnet.com Inc. Voice/Fax +1 416 306-0466/0452 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message