From owner-freebsd-questions@FreeBSD.ORG Sun Dec 11 05:45:39 2011 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 7F3F71065677 for ; Sun, 11 Dec 2011 05:45:39 +0000 (UTC) (envelope-from freebsd-questions@herveybayaustralia.com.au) Received: from mail.unitedinsong.com.au (mail.unitedinsong.com.au [150.101.178.33]) by mx1.freebsd.org (Postfix) with ESMTP id 332278FC08 for ; Sun, 11 Dec 2011 05:45:39 +0000 (UTC) Received: from laptop1.herveybayaustralia.com.au (laptop1.herveybayaustralia.com.au [192.168.0.179]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by mail.unitedinsong.com.au (Postfix) with ESMTPSA id CD5A25C24 for ; Sun, 11 Dec 2011 15:58:00 +1000 (EST) Message-ID: <4EE442DC.7080107@herveybayaustralia.com.au> Date: Sun, 11 Dec 2011 15:42:52 +1000 From: Da Rock User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:7.0.1) Gecko/20111109 Thunderbird/7.0.1 MIME-Version: 1.0 To: freebsd-questions@freebsd.org References: <4EE32BB6.3020105@herveybayaustralia.com.au> <4EE38454.3020307@otenet.gr> <4EE3D1F0.60500@herveybayaustralia.com.au> <4EE3DA85.4070903@herveybayaustralia.com.au> <20111211002348.56497fde@gumby.homeunix.com> In-Reply-To: <20111211002348.56497fde@gumby.homeunix.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: 9.0 install and journaling X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 11 Dec 2011 05:45:39 -0000 On 12/11/11 10:23, RW wrote: > On Sun, 11 Dec 2011 08:17:41 +1000 > Da Rock wrote: > > >>> SUJ speeds up the check a lot, seconds as opposed to minutes. If >>> something happens to the journal, it falls back to a standard fsck. >> But fsck needs to be run manually- I have users that can't do that, >> and the filesystem corrupts. Ergo gjournal; it boots up and fixes on >> the fly. So SU+J needs a manual fsck before booting proper or can it >> just boot and be done? > It's not very different; gjournal and SU both attempt to leave the > filesystem in an coherent state, but both still need a preen to > recover lost space. In either case the preen can fail requiring a full > fsck. > > Journalled SU make SU behave more like gjournal in that you can do a > fast foreground check which avoids the lengthy background fsck and > avoids deferring the handling of unexpected inconsistencies to the next > boot. > Yes, but I don't do a fsck to recover gjournal- it has a miniscule blurp for a nanosecond and prints a message at boot and thats it. Is it the same with su+j? If it does then I'll drop gjournal (and the performance hit) and I'll use su+j when I jump to 9.0. I've never done fsck on a gjournal (yet).