From owner-freebsd-questions@FreeBSD.ORG Tue Dec 16 20:47:51 2008 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 34D5F1065674 for ; Tue, 16 Dec 2008 20:47:51 +0000 (UTC) (envelope-from bernard@dugas-family.org) Received: from smtp11.ispronet.com (smtp11.ispronet.com [81.28.196.233]) by mx1.freebsd.org (Postfix) with ESMTP id E57918FC1F for ; Tue, 16 Dec 2008 20:47:50 +0000 (UTC) (envelope-from bernard@dugas-family.org) Received: from localhost (unknown [127.0.0.1]) by smtp11.ispronet.com (Postfix) with ESMTP id E075BB855; Tue, 16 Dec 2008 21:47:49 +0100 (CET) Received: from smtp11.ispronet.com ([127.0.0.1]) by localhost (smtp11.ispronet.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 38623-05; Tue, 16 Dec 2008 21:47:40 +0100 (CET) Received: from [192.168.1.34] (unknown [212.109.69.174]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp11.ispronet.com (Postfix) with ESMTP; Tue, 16 Dec 2008 21:47:40 +0100 (CET) Message-ID: <49481468.7070601@dugas-family.org> Date: Tue, 16 Dec 2008 21:49:44 +0100 From: Bernard Dugas User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; fr-FR; rv:1.7) Gecko/20040616 X-Accept-Language: fr,en MIME-Version: 1.0 To: "Paul B. Mahol" References: <20081216094719.EDCEE1065675@hub.freebsd.org> <49478749.2030200@dugas-family.org> <20081216123057.M61117@wojtek.tensor.gdynia.pl> <4947B50B.7010802@dugas-family.org> <20081216160327.N61449@wojtek.tensor.gdynia.pl> <3a142e750812160715p751483edh610a4adb055d31a2@mail.gmail.com> In-Reply-To: <3a142e750812160715p751483edh610a4adb055d31a2@mail.gmail.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: amavisd-new at ispronet.com Cc: Wojciech Puchar , freebsd-questions@freebsd.org Subject: Re: Optimising pxeboot disk size 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: Tue, 16 Dec 2008 20:47:51 -0000 Paul B. Mahol wrote: > On 12/16/08, Wojciech Puchar wrote: >>>When you want to change something, you add a rw TransparentLayer : >>>mount -tl yournfsserver:/StationYchanges/etc /etc >>> >>>So that changed or added files are only stored in this rw partition, thus >>>very small and easy to manage. >>> >>>This would be a kind of partition inheritance, like in object languages... >>> >>>Dreams are allowed :-) >> >>try mount_unionfs > > and mount_nullfs Thanks Paul, FreeBSD has always hidden treasures :-) MOUNT_NULLFS(8) doc is very detailled, but i can't find how to use it for my problem : being able to go from common shared configuration to specific private configuration. unionfs looks very close to my dream, but it is currently not available for production :-( Best regards, -- Bernard DUGAS Mobile +33 615 333 770