Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754551AbXEBUv6 (ORCPT ); Wed, 2 May 2007 16:51:58 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754543AbXEBUv6 (ORCPT ); Wed, 2 May 2007 16:51:58 -0400 Received: from ug-out-1314.google.com ([66.249.92.175]:30545 "EHLO ug-out-1314.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754540AbXEBUv4 convert rfc822-to-8bit (ORCPT ); Wed, 2 May 2007 16:51:56 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=YpAvAuDFLmhEcUibtTF+8OIeQz/CueypGNr54dmHxQB1M2bGT+MC60dlaj8G8yMjVwkfSKz4Je8XPh375rK6NRHaDhRGS6/SMR+dPKBVEIYw1rGSwE0r3uflpm7f+WLC/XN5UGOl7pDL3rbqzF4KM0KeTjjbb/zU0MNAkDdqfhs= Message-ID: Date: Wed, 2 May 2007 21:51:50 +0100 From: "Miguel Sousa Filipe" To: "Diego Calleja" Subject: Re: FEATURE REQUEST: merge MD software raid and LVM in one unique layer. Cc: linux-kernel@vger.kernel.org In-Reply-To: <20070502221045.ad20b915.diegocg@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8BIT Content-Disposition: inline References: <20070502221045.ad20b915.diegocg@gmail.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1476 Lines: 40 On 5/2/07, Diego Calleja wrote: > El Wed, 2 May 2007 20:18:55 +0100, "Miguel Sousa Filipe" escribi?: > > > I find it high irritanting having two kernel interfaces and two > > userland tools that provide the same funcionality, which one should I > > use? > > I doubt users care about kernel's design; however the lack of unification of > userspace tools is a real problem. Just my 2?. > I believe they do, since the kernels desing obviate the need and use of several diferent tools (that shouldn't be needed) like for instance for having raid5 with snapshot and dinamic partition resizing we will allways need: md-raid5 lvm some FS. This md-raid5 and lvm separation is the evidence of how the kernels design & API affect usability and userspace tools that the user is obliged to use. I cannot have those features without "bumping" into this kernel design issue. This is also a problem for any developer who tries to improve usability in this area by creating some unified userland tools to manipulate MD & LVM. (Imagining myself implementing some userland tool to create some "storage devices" + mount points.. doesn't seem easy nor fun..). Best regards, -- Miguel Sousa Filipe - 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/