Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932451AbWAWKqP (ORCPT ); Mon, 23 Jan 2006 05:46:15 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932454AbWAWKqP (ORCPT ); Mon, 23 Jan 2006 05:46:15 -0500 Received: from gate.in-addr.de ([212.8.193.158]:60806 "EHLO mx.in-addr.de") by vger.kernel.org with ESMTP id S932451AbWAWKqO (ORCPT ); Mon, 23 Jan 2006 05:46:14 -0500 Date: Mon, 23 Jan 2006 11:45:22 +0100 From: Lars Marowsky-Bree To: Heinz Mauelshagen Cc: Neil Brown , Phillip Susi , Jan Engelhardt , "Lincoln Dale (ltd)" , Michael Tokarev , linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org, "Steinar H. Gunderson" Subject: Re: [PATCH 000 of 5] md: Introduction Message-ID: <20060123104522.GE2366@marowsky-bree.de> References: <17360.9233.215291.380922@cse.unsw.edu.au> <20060120183621.GA2799@redhat.com> <20060120225724.GW22163@marowsky-bree.de> <20060121000142.GR2801@redhat.com> <20060121000344.GY22163@marowsky-bree.de> <20060121000806.GT2801@redhat.com> <20060121001311.GA22163@marowsky-bree.de> <20060123094418.GX2801@redhat.com> <20060123102601.GD2366@marowsky-bree.de> <20060123103851.GY2801@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20060123103851.GY2801@redhat.com> X-Ctuhulu: HASTUR User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1290 Lines: 36 On 2006-01-23T11:38:51, Heinz Mauelshagen wrote: > > Ok, I still didn't get that. I must be slow. > > > > Did you implement some DM-internal stacking now to avoid the above > > mentioned complexity? > > > > Otherwise, even DM-on-DM is still stacked via the block device > > abstraction... > > No, not necessary because a single-level raid4/5 mapping will do it. > Ie. it supports parameters in the constructor as other targets > do as well (eg. mirror or linear). An dm-md wrapper would not support such a basic feature (which is easily added to md too) how? I mean, "I'm rewriting it because I want to and because I understand and own the code then" is a perfectly legitimate reason, but let's please not pretend there's really sound and good technical reasons ;-) Sincerely, Lars Marowsky-Br?e -- High Availability & Clustering SUSE Labs, Research and Development SUSE LINUX Products GmbH - A Novell Business -- Charles Darwin "Ignorance more frequently begets confidence than does knowledge" - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/