From owner-freebsd-current@FreeBSD.ORG Wed Apr 21 13:06:10 2010 Return-Path: Delivered-To: current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 1FEC21065672 for ; Wed, 21 Apr 2010 13:06:10 +0000 (UTC) (envelope-from yanefbsd@gmail.com) Received: from mail-qy0-f181.google.com (mail-qy0-f181.google.com [209.85.221.181]) by mx1.freebsd.org (Postfix) with ESMTP id CDA528FC16 for ; Wed, 21 Apr 2010 13:06:09 +0000 (UTC) Received: by qyk11 with SMTP id 11so8115865qyk.13 for ; Wed, 21 Apr 2010 06:06:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:received:message-id:subject:from:to:cc:content-type :content-transfer-encoding; bh=qkoThmJtDeodMIP3O1XZcEZ63kLTuA4rQK05SZs7lZ4=; b=R28buQDbaZAfwF+hoj7VCLQGlROj0IFV8rJ86IeBIxVldUohRswJo8VrHAO8yRP42J y0ewf4ur0YuyI9H4EI3YpvCSb23gUNf3FMjeMAIt+VGVbtW7I+KbvQb1cd6PM//llpv8 F/7afbVl8+5j3yk2Zq11xy+mfIwkJcc+gisUI= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=iz4UgPvcyv2r6dLjq3j0PeU6+k4yk7AoUeuJXBAFrE3L9CMaUjhye1zfVgrYIdp5Yj 3T3pq+03X8zb1wpjYicgMsagh5rFbaRRMoqSYsou0VC58iTAioSLyIA6NCfXjHMDue8B TXPnyzmO3+pS6AMfqZL+vpCE182AwmkuaMFQo= MIME-Version: 1.0 Received: by 10.229.28.85 with HTTP; Wed, 21 Apr 2010 06:06:08 -0700 (PDT) In-Reply-To: <20100421093940.3e6b181b@ernst.jennejohn.org> References: <20100421093940.3e6b181b@ernst.jennejohn.org> Date: Wed, 21 Apr 2010 06:06:08 -0700 Received: by 10.229.88.193 with SMTP id b1mr4539651qcm.27.1271855169027; Wed, 21 Apr 2010 06:06:09 -0700 (PDT) Message-ID: From: Garrett Cooper To: gary.jennejohn@freenet.de Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable 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: Wed, 21 Apr 2010 13:06:10 -0000 On Wed, Apr 21, 2010 at 12:39 AM, Gary Jennejohn wrote: > On Tue, 20 Apr 2010 12:15:48 -1000 (HST) > 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. =A0SUJ may be enabled with tunefs -j enable and disabl= ed >> with tunefs -j disable on an unmounted filesystem. =A0It 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. =A0This is a very large >> feature and fundamentally changes softupdates. =A0Although it has been >> extensively tested by many there may be unforseen problems. =A0If you ru= n >> 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 ensur= e >> the quickest response. >> > > And the crowd goes wild. > > SUJ is _great_ and I'm glad to see it finally making it into the tree. Indeed. I'm looking forward to testing the junk out of this -- this is definitely a good move forward with UFS2 :]... Cheers, -Garrett PS How does this interact with geom with journaling BTW? Has this been tested performance wise (I know it doesn't make logistical sense, but it does kind of seem to null and void the importance of geom with journaling, maybe...)?