From owner-freebsd-questions@FreeBSD.ORG Tue Aug 21 13:59:06 2007 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 375DB16A420 for ; Tue, 21 Aug 2007 13:59:06 +0000 (UTC) (envelope-from freebsd-questions-local@be-well.ilk.org) Received: from mail2.sea5.speakeasy.net (mail2.sea5.speakeasy.net [69.17.117.4]) by mx1.freebsd.org (Postfix) with ESMTP id 121C613C48A for ; Tue, 21 Aug 2007 13:59:05 +0000 (UTC) (envelope-from freebsd-questions-local@be-well.ilk.org) Received: (qmail 9939 invoked from network); 21 Aug 2007 13:59:05 -0000 Received: from dsl092-078-145.bos1.dsl.speakeasy.net (HELO be-well.ilk.org) ([66.92.78.145]) (envelope-sender ) by mail2.sea5.speakeasy.net (qmail-ldap-1.03) with SMTP for ; 21 Aug 2007 13:59:04 -0000 Received: by be-well.ilk.org (Postfix, from userid 1147) id 9FE8F2843A; Tue, 21 Aug 2007 09:59:03 -0400 (EDT) To: Rakhesh Sasidharan References: <20070820121349.D51751@obelix.home.rakhesh.com> From: Lowell Gilbert Date: Tue, 21 Aug 2007 09:59:03 -0400 In-Reply-To: <20070820121349.D51751@obelix.home.rakhesh.com> (Rakhesh Sasidharan's message of "Mon\, 20 Aug 2007 12\:31\:56 +0400 \(GST\)") Message-ID: <44abslgfa0.fsf@be-well.ilk.org> User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.0.99 (berkeley-unix) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: freebsd-questions@freebsd.org Subject: Re: GEOM, Vinum difference X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: freebsd-questions@freebsd.org List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 21 Aug 2007 13:59:06 -0000 Rakhesh Sasidharan writes: > I see that if I want to do disk striping/ concating/ mirroring, > FreeBSD offers the GEOM utilities and the Vinum LVM (which fits into > the GEOM architecture). Why do we have two different ways of doing the > same tasks -- any advantages/ disadvantages to either approach? > > I did check the archives before posting this question. Got a couple of > hits, but they seem to be old info. Hence this question. > > The GEOM utilities seem to be newer, fancier, and probably the > future. Vinum seems to be how things used to happen earlier. After > GEOM was introduced, if Vinum had been discarded, I would have > understood. But it wasn't. Instead, it was rewritten for GEOM and is > probably still actively maintained. So I wonder why we have two ways > of doing the same tasks ... > > What I understand from the archives is that Vinum was _probably_ > rewritten for GEOM coz the GEOM utilities were still new and not as > time tested as Vinum. Is that the case? So will Vinum continue to be > around for a while or it be discarded? geom(4) does not provide RAID. It provides framework services that are used by gvinum(8), (and by many other disk-related capabilities).