From owner-freebsd-stable@FreeBSD.ORG Tue Jun 22 15:25:05 2004 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4EAD516A4CF for ; Tue, 22 Jun 2004 15:25:05 +0000 (GMT) Received: from ganymede.hub.org (u46n208.hfx.eastlink.ca [24.222.46.208]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2746F43D2D for ; Tue, 22 Jun 2004 15:25:05 +0000 (GMT) (envelope-from scrappy@hub.org) Received: by ganymede.hub.org (Postfix, from userid 1000) id 7EECCE9472; Tue, 22 Jun 2004 10:57:46 -0300 (ADT) Received: from localhost (localhost [127.0.0.1]) by ganymede.hub.org (Postfix) with ESMTP id 7DDC2E9471; Tue, 22 Jun 2004 10:57:46 -0300 (ADT) Date: Tue, 22 Jun 2004 10:57:46 -0300 (ADT) From: "Marc G. Fournier" To: Bjoern Koenig In-Reply-To: <20040622130901.7F0A31A3@hoppel.local> Message-ID: <20040622104637.J845@ganymede.hub.org> References: <20040622130901.7F0A31A3@hoppel.local> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed cc: freebsd-stable@freebsd.org Subject: Re: nullfs in 4.10 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 22 Jun 2004 15:25:05 -0000 On Tue, 22 Jun 2004, Bjoern Koenig wrote: > Hello, > > first of all: > > THIS FILESYSTEM TYPE IS NOT YET FULLY SUPPORTED > (READ: IT DOESN'T WORK) AND USING IT MAY, IN FACT, > DESTROY DATA ON YOUR SYSTEM. USE AT YOUR OWN RISK. > BEWARE OF DOG. SLIPPERY WHEN WET. > > My experience: > > I had much less problems with unionfs -b, even with FreeBSD 4.10, to mount > for example /usr/ports into a jail temporarily. But for everything else you > should never use it. BS, and then some ... I have 4 servers in place right now, each running a minimum of 30 jail'd environments (my most full is running 67 right now) where usr is mounted using unionfs -b from a central template ... the *only* issues that I have is with fsck's on a long uptime takes a bit of time ... The only caveat I'll make *against* unionfs at this time, and something that I'd like to see fixed eventually ... do not try and mount / and expect a jail to run ... there is a FIFO(?) created in the /var directory that will cause the server to panic ... but, from what I can tell, that is the only really big, outstanding bug that will hit you. Between David Schultz and Tor, most of the rest of the "easy to trigger" bugs have been cleaned up. Note: when I say "easy to trigger" ... as I said above, my servers run between 30 and 70 jail'd environments using unionfs, each jail'd environment being a totally different configuration, running within them anything from jabber, to aolserver, to jakarta-tomcat, etc ... the longest I've had a server run before doing an OS upgrade on it was ~120days or so, without a hitch ... ---- Marc G. Fournier Hub.Org Networking Services (http://www.hub.org) Email: scrappy@hub.org Yahoo!: yscrappy ICQ: 7615664