From owner-freebsd-geom@FreeBSD.ORG Tue Oct 10 18:25:18 2006 Return-Path: X-Original-To: freebsd-geom@freebsd.org Delivered-To: freebsd-geom@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 9DBC916A416 for ; Tue, 10 Oct 2006 18:25:18 +0000 (UTC) (envelope-from xride@x12.dk) Received: from swip.net (mailfe05.tele2.dk [212.247.154.131]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0B3AB43D45 for ; Tue, 10 Oct 2006 18:25:17 +0000 (GMT) (envelope-from xride@x12.dk) X-T2-Posting-ID: lkM/Dn7LTUP9vUt2XCoVCw== X-Cloudmark-Score: 0.000000 [] Received: from x12.dk (account mp274051@get2net.dk [83.72.97.237] verified) by mailfe05.swip.net (CommuniGate Pro SMTP 5.0.8) with ESMTPA id 196923083; Tue, 10 Oct 2006 20:25:16 +0200 Received: by x12.dk (Postfix, from userid 666) id 5174C5083D; Tue, 10 Oct 2006 20:25:15 +0200 (CEST) Date: Tue, 10 Oct 2006 20:25:15 +0200 From: Soeren Straarup To: Poul-Henning Kamp Message-ID: <20061010182515.GA67525@x12.dk> References: <6952.1156795637@critter.freebsd.dk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <6952.1156795637@critter.freebsd.dk> User-Agent: Mutt/1.4.2.2i Cc: Christian Laursen , freebsd-geom@FreeBSD.org Subject: Re: Geom class project idea - geom_cow X-BeenThere: freebsd-geom@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: GEOM-specific discussions and implementations List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 10 Oct 2006 18:25:18 -0000 On Mon, Aug 28, 2006 at 08:07:17PM +0000, Poul-Henning Kamp wrote: > In message , Christian Laursen writes > : > >I have an idea for a geom class that I think could be useful in a number > >of scenarios. > > > >The basic idea is that it takes two existing providers and uses the first > >one as a starting point and the other one to keep changes to the first > >one using copy-on-write. > > This one has been one of the inspirations for GEOMs generality from > the very beginning, but so far nobody has actually written it. I would look into it but i might need some help.. I've been looking for a geom project lately. Maybe this would be a nice idea. But i need some insight in have the msg's are passed on up and down the geom layer. /Soeren -- Soeren Straarup | aka OZ2DAK aka Xride FreeBSD committer | FreeBSD since 2.2.6-R If a program is not working right, then send a patch