From owner-freebsd-current@FreeBSD.ORG Sun Apr 25 01:06:27 2010 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id C5D6E106566C; Sun, 25 Apr 2010 01:06:27 +0000 (UTC) (envelope-from bruce@cran.org.uk) Received: from muon.cran.org.uk (unknown [IPv6:2001:470:1f09:679::1]) by mx1.freebsd.org (Postfix) with ESMTP id 8C7328FC0C; Sun, 25 Apr 2010 01:06:27 +0000 (UTC) Received: from muon.cran.org.uk (localhost [127.0.0.1]) by muon.cran.org.uk (Postfix) with ESMTP id 7BBB1C400C; Sun, 25 Apr 2010 01:06:26 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on muon.cran.org.uk X-Spam-Level: X-Spam-Status: No, score=-2.7 required=8.0 tests=AWL,BAYES_00,RDNS_DYNAMIC autolearn=no version=3.2.5 Received: from core.draftnet (87-194-158-129.bethere.co.uk [87.194.158.129]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by muon.cran.org.uk (Postfix) with ESMTPSA; Sun, 25 Apr 2010 01:06:26 +0000 (UTC) From: Bruce Cran To: freebsd-current@freebsd.org Date: Sun, 25 Apr 2010 02:06:25 +0100 User-Agent: KMail/1.13.2 (FreeBSD/9.0-CURRENT; KDE/4.4.2; amd64; ; ) References: In-Reply-To: MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <201004250206.25452.bruce@cran.org.uk> Cc: Jeff Roberson , current@freebsd.org Subject: Re: HEADS UP: SUJ Going in to head today X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 25 Apr 2010 01:06:27 -0000 On Tuesday 20 April 2010 23:15:48 Jeff Roberson wrote: > Hi Folks, > > You may have seen my other Soft-updates journaling (SUJ) announcements. > If not, it is a journaling system that works cooperatively with > soft-updates to eliminate the full background filesystem check after an > unclean shutdown. SUJ may be enabled with tunefs -j enable and disabled > with tunefs -j disable on an unmounted filesystem. It is backwards > compatible with soft-updates with no journal. > > I'm going to do another round of tests and buildworld this afternoon to > verify the diff and then I'm committing to head. This is a very large > feature and fundamentally changes softupdates. Although it has been > extensively tested by many there may be unforseen problems. If you run > into an issue that you think may be suj please email me directly as well > as posting on current as I sometimes miss list email and this will ensure > the quickest response. Should fsck always report that the filesystem has been modified when the journal is skipped, even when no errors are reported? -- Bruce Cran