From owner-freebsd-geom@FreeBSD.ORG Mon Mar 23 09:42:21 2009 Return-Path: Delivered-To: freebsd-geom@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id D8418106564A; Mon, 23 Mar 2009 09:42:21 +0000 (UTC) (envelope-from phk@critter.freebsd.dk) Received: from phk.freebsd.dk (phk.freebsd.dk [130.225.244.222]) by mx1.freebsd.org (Postfix) with ESMTP id 99F998FC23; Mon, 23 Mar 2009 09:42:21 +0000 (UTC) (envelope-from phk@critter.freebsd.dk) Received: from critter.freebsd.dk (critter.freebsd.dk [192.168.61.3]) by phk.freebsd.dk (Postfix) with ESMTP id 68FA03F129; Mon, 23 Mar 2009 09:42:20 +0000 (UTC) Received: from critter.freebsd.dk (localhost [127.0.0.1]) by critter.freebsd.dk (8.14.3/8.14.3) with ESMTP id n2N9gJOC043416; Mon, 23 Mar 2009 09:42:20 GMT (envelope-from phk@critter.freebsd.dk) To: Luigi Rizzo From: "Poul-Henning Kamp" In-Reply-To: Your message of "Sun, 22 Mar 2009 10:51:29 +0100." Date: Mon, 23 Mar 2009 09:42:19 +0000 Message-ID: <43415.1237801339@critter.freebsd.dk> Sender: phk@critter.freebsd.dk Cc: luigi@freebsd.org, Pawel Jakub Dawidek , Ivan Voras , freebsd-geom@freebsd.org Subject: Re: disk scheduling (was: Re: RFC: adding 'proxy' nodes to provider ports (with patch)) 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: Mon, 23 Mar 2009 09:42:22 -0000 In message , Luigi Rizzo writes: >>>Scheduling was just an example on where the problem came out, >> >> Scheduling is the *only* application I have seen mentioned for >> this special case geom construct ? > >man 4 geom has a section which explicitly mentions this construct, >with the same example that you posted in the thread: You will notice that there is no mention of "special classes" or "proxy nodes with special properties". If you want to do it, do it right. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.