From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 3 Oct 2002 11:42:07 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 3 Oct 2002 11:42:07 -0400 Received: from e5.ny.us.ibm.com ([32.97.182.105]:55708 "EHLO e5.ny.us.ibm.com") by vger.kernel.org with ESMTP id ; Thu, 3 Oct 2002 11:42:05 -0400 Message-ID: <3D9C6537.2D52E074@us.ibm.com> Date: Thu, 03 Oct 2002 10:41:43 -0500 From: Mike Tran Organization: IBM X-Mailer: Mozilla 4.76 [en] (X11; U; Linux 2.5.40-evms i686) X-Accept-Language: en MIME-Version: 1.0 To: Christoph Hellwig Cc: Shawn , linux-kernel@vger.kernel.org, evms-devel@lists.sourceforge.net Subject: Re: [Evms-devel] Re: EVMS Submission for 2.5 References: <02100216332002.18102@boiler> <20021003153256.B17513@infradead.org> <20021003100341.B32461@q.mn.rr.com> <20021003163117.A23642@infradead.org> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Christoph Hellwig wrote: > On Thu, Oct 03, 2002 at 10:03:41AM -0500, Shawn wrote: > > On 10/03, Christoph Hellwig said something like: > > > On Wed, Oct 02, 2002 at 04:33:20PM -0500, Kevin Corry wrote: > > > > EVMS provides a new, stand-alone subsystem to the kernel > > > > > > i.e. it duplictes existing block layer/volume managment functionality.. > > > > Ok, LVM1 is non-existant if that's what you're referring to. Really, > > this replaces LVM1, but your statement WRT md still has merit. As for > > md duplication, it has been stated already that a preferred approach > > might be to send only core functionality bits for now, leaving that > > out till that question can be addressed. > > I speak of all drivers/md/* and fs/partitions/*. > I have sent Neil Brown an email asking for his thoughts on a possible code merge. Neil is on vacation until 10/7. I would say that the EMVS MD code & original MD code are very similar. The most significant difference is the MD array discovery and setup code. EVMS MD does in-kernel discovery, whereas Linux MD has both in-kernel discovery (via fs/partitions/check.c) and user space initiated discovery (IOCTL). Mike Tran