From owner-freebsd-questions@FreeBSD.ORG Sat Jun 7 09:15:24 2014 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 2E166EF5 for ; Sat, 7 Jun 2014 09:15:24 +0000 (UTC) Received: from mail.s1.d2ux.org (static.209.96.9.5.clients.your-server.de [5.9.96.209]) by mx1.freebsd.org (Postfix) with ESMTP id B14512CA2 for ; Sat, 7 Jun 2014 09:15:22 +0000 (UTC) Received: from mail.s1.d2ux.org (mail [10.0.0.3]) by mail.s1.d2ux.org (Postfix) with ESMTP id 2926284F25FC for ; Fri, 6 Jun 2014 10:35:25 +0200 (CEST) Received: from mail.s1.d2ux.org ([10.0.0.3]) by mail.s1.d2ux.org (mail.s1.d2ux.org [10.0.0.3]) (amavisd-new, port 10024) with ESMTP id 89iP36BTBnD0 for ; Fri, 6 Jun 2014 10:35:23 +0200 (CEST) Received: from www.s1.d2ux.org (unknown [10.0.0.4]) by mail.s1.d2ux.org (Postfix) with ESMTPS id 2CAF584F25DE for ; Fri, 6 Jun 2014 10:35:23 +0200 (CEST) Received: from 188.92.33.52 (188.92.33.52 [188.92.33.52]) by d2ux.org (Horde Framework) with HTTP; Fri, 06 Jun 2014 10:35:23 +0200 Date: Fri, 06 Jun 2014 10:35:23 +0200 Message-ID: <20140606103523.Horde.M-arxGpaecCk8BW2FZ_pXQ7@d2ux.org> From: Matthias Petermann To: freebsd-questions@freebsd.org Subject: Stability of unionfs - general recommendation? User-Agent: Internet Messaging Program (IMP) H5 (6.1.4) Content-Type: text/plain; charset=UTF-8; format=flowed; DelSp=Yes MIME-Version: 1.0 Content-Disposition: inline X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 07 Jun 2014 09:15:24 -0000 Hello, I'm planning a new server for the purpose of hosting multiple Jails. Each jail will get a dedicated UFS2 filesystem sourced from gvinum volumes. To make maintenance of the Jail base installation more efficient I consider to mount the dedicated filesystem(s) as an overlay above the base installation. Here is where unionfs comes into play as it provides these capabilities. My internet research yielded some questionable results on the stability of unionfs. I understood there was an "old" implementation and a "newer" one introduced in FreeBSD 6.3[1]. Anyway - I'm curious if someone has a similiar setup running and can provide me some advice when to use unionfs and when not. Thanks in advance & kind regards, Matthias [1] http://people.freebsd.org/~daichi/unionfs/ -- Matthias Petermann | www.petermann-it.de GnuPG: 0x5C3E6D75 | 5930 86EF 7965 2BBA 6572 C3D7 7B1D A3C3 5C3E 6D75