From owner-freebsd-questions@FreeBSD.ORG Tue Dec 16 22:25:09 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 C38AB1065670 for ; Tue, 16 Dec 2008 22:25:09 +0000 (UTC) (envelope-from onemda@gmail.com) Received: from yx-out-2324.google.com (yx-out-2324.google.com [74.125.44.28]) by mx1.freebsd.org (Postfix) with ESMTP id 719298FC08 for ; Tue, 16 Dec 2008 22:25:09 +0000 (UTC) (envelope-from onemda@gmail.com) Received: by yx-out-2324.google.com with SMTP id 8so2026702yxb.13 for ; Tue, 16 Dec 2008 14:25:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to :subject:cc:in-reply-to:mime-version:content-type :content-transfer-encoding:content-disposition:references; bh=L6UiB2YAva3cPYcSwU/r/K9m1GmXfrgaLrePQmVAtTQ=; b=DeIX857cszeDgh4waEBdWQ7TBFM4A0NqL98NEd57TWKshT0/vtc3PqJpSzJCgXVyR4 IbJ5zPY7g5Mxfb98VMcOi+0sViBGk2cPwPqLmkt9nSRMyScZKzZPfttSKAHH3fEUrFzr kuMf3KCi2FZ4xfGrZlTBsbge/Ab4VJ+9kuUl0= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version :content-type:content-transfer-encoding:content-disposition :references; b=q3YB66X8idh03v1yHawyuQqlMyFrg5Yx3HvFPIm34sJ1dDmUwWRIgOmCtrRLIW2++R ifjkYOviSwpjO2EfoE+UQl2LECJUpLyTHp+kKhDoU7MixPjuoL+LwHhx4lLCPG6in3Yq UyurjaMsH3OEnclHlvjUgRjRfLPo0jleeiweQ= Received: by 10.231.20.5 with SMTP id d5mr196069ibb.25.1229466308156; Tue, 16 Dec 2008 14:25:08 -0800 (PST) Received: by 10.231.16.202 with HTTP; Tue, 16 Dec 2008 14:25:08 -0800 (PST) Message-ID: <3a142e750812161425n33dd186au710d1df08d65c4a7@mail.gmail.com> Date: Tue, 16 Dec 2008 23:25:08 +0100 From: "Paul B. Mahol" To: "Bernard Dugas" In-Reply-To: <49481468.7070601@dugas-family.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline 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> <49481468.7070601@dugas-family.org> 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 22:25:09 -0000 On 12/16/08, Bernard Dugas wrote: > 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 :-( Well, I tested unionfs on CURRENT and it did not crashed on me. Feel free to test it on 7 STABLE and report results to developers. -- Paul