From owner-freebsd-current@FreeBSD.ORG Tue Mar 6 08:21:55 2012 Return-Path: Delivered-To: current@freebsd.org Received: from mx2.freebsd.org (mx2.freebsd.org [69.147.83.53]) by hub.freebsd.org (Postfix) with ESMTP id 62082106564A; Tue, 6 Mar 2012 08:21:55 +0000 (UTC) (envelope-from dougb@FreeBSD.org) Received: from [127.0.0.1] (hub.freebsd.org [IPv6:2001:4f8:fff6::36]) by mx2.freebsd.org (Postfix) with ESMTP id 7817D14F120; Tue, 6 Mar 2012 08:21:53 +0000 (UTC) Message-ID: <4F55C91F.4040503@FreeBSD.org> Date: Tue, 06 Mar 2012 02:21:51 -0600 From: Doug Barton Organization: http://www.FreeBSD.org/ User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:10.0.2) Gecko/20120216 Thunderbird/10.0.2 MIME-Version: 1.0 To: Adrian Chadd References: <20120221143537.Horde.deyFDZjmRSRPQ52pxBIpnLA@webmail.leidinger.net> <4F4D51CB.2010508@FreeBSD.org> <4F4D5E5D.9040302@FreeBSD.org> <4F4DD288.5060106@FreeBSD.org> <4F4ED889.2070608@FreeBSD.org> <4F500BB9.4040307@FreeBSD.org> <4F5088CA.1090108@FreeBSD.org> <4F510FBD.50008@FreeBSD.org> <4F5117A6.2030003@FreeBSD.org> <4F5285CF.3010001@FreeBSD.org> <4F55B5E3.1080207@FreeBSD.org> In-Reply-To: X-Enigmail-Version: 1.3.5 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Cc: stable@freebsd.org, current@freebsd.org, =?UTF-8?B?eiBXxIVzaWtvd3NraQ==?= , Arnaud Lacombe , "Bjoern A. Zeeb" , Alexander Leidinger Subject: Re: flowtable usable or not 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: Tue, 06 Mar 2012 08:21:55 -0000 On 3/6/2012 2:12 AM, Adrian Chadd wrote: > You haven't been bitten by the storage layer or filesystem hackery > bits which has caused filesystem corruption. :) Ummm, I have, actually. I was one of the early adopters of SU+J and complained loudly when it ate my /var/ for lunch. I also use a lot of separate slices/partitions, so my system partition isn't getting written to very often, isn't using SU+J, and almost always comes up clean after a crash. My layout looks like this: FreeBSD 1 & 2 are the same: / + /usr /var /tmp (memory disk) /usr/local/ (this is the big partition, things like ports WRKDIRPREFIX and /usr/obj go here) Then I have separate ext2fs filesystems for /home, /data (cvs, svn, other big trees). These are accessible from my Linux partition, which is also where the shared swap partition is. Using ext2fs for things I really care about (like /home) or things that would take a long time to reproduce (like cvs and svn trees) has helped avoid some of the more exciting corruption/data loss events, and everything on the /usr/local's is either backed up, or trivially reproducable. > That said, FFS+SUJ has made recover-from-kernel-panic so much less > painful. Thankyou Jeffr and others! It's also made a mess out of snapshots ... The only thing I use SU+J for is /var and /usr/local (see above). > What I tend to do is either run current on a VM or organise some > dedicated -current laptops. And run the bits of -current I'm testing > on -8 and -9. Well you get a gold start for actually running it at all, so there you go. :) Doug