From owner-freebsd-geom@FreeBSD.ORG  Tue Jan 24 22:43:17 2006
Return-Path: <owner-freebsd-geom@FreeBSD.ORG>
X-Original-To: freebsd-geom@freebsd.org
Delivered-To: freebsd-geom@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 9D6B716A42A
	for <freebsd-geom@freebsd.org>; Tue, 24 Jan 2006 22:43:17 +0000 (GMT)
	(envelope-from sergey.lungu@gmail.com)
Received: from uproxy.gmail.com (uproxy.gmail.com [66.249.92.201])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 9ED8E43D45
	for <freebsd-geom@freebsd.org>; Tue, 24 Jan 2006 22:43:16 +0000 (GMT)
	(envelope-from sergey.lungu@gmail.com)
Received: by uproxy.gmail.com with SMTP id o2so5283uge
	for <freebsd-geom@freebsd.org>; Tue, 24 Jan 2006 14:43:15 -0800 (PST)
DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com;
	h=received:date:from:to:cc:subject:message-id:in-reply-to:references:x-mailer:mime-version:content-type:content-transfer-encoding;
	b=ZvUAjT6zL4+atd5wnP4QggS2t6rBp7/ey6fHak9vZAfOi2MAR/cOl4O1FEb0AE8l4YRaZwU/83iyBjYjzwQQs7UHu3s7MMpuRUfw9PUrrkcPFeCnEd8XRWMfHtf12u9EtrMo8vEUkuIDkt9aemjuYColAc8Qxzl0DQKmBvEjG7Q=
Received: by 10.66.222.2 with SMTP id u2mr247ugg;
	Tue, 24 Jan 2006 14:43:14 -0800 (PST)
Received: from ogre.obchaga.org ( [195.225.128.22])
	by mx.gmail.com with ESMTP id a1sm5483056ugf.2006.01.24.14.43.13;
	Tue, 24 Jan 2006 14:43:14 -0800 (PST)
Date: Wed, 25 Jan 2006 01:43:10 +0300
From: Sergey Lungu <sergey.lungu@gmail.com>
To: Pawel Jakub Dawidek <pjd@FreeBSD.org>
Message-Id: <20060125014310.3f1ce1c9.sergey.lungu@gmail.com>
In-Reply-To: <20060124222747.GA7617@garage.freebsd.pl>
References: <20060122192257.273734cf.sergey.lungu@gmail.com>
	<20060124222747.GA7617@garage.freebsd.pl>
X-Mailer: Sylpheed version 2.0.4 (GTK+ 2.8.10; i386-portbld-freebsd6.0)
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Cc: freebsd-geom@freebsd.org
Subject: Re: GEOM stripe + concat
X-BeenThere: freebsd-geom@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: GEOM-specific discussions and implementations
	<freebsd-geom.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-geom>,
	<mailto:freebsd-geom-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-geom>
List-Post: <mailto:freebsd-geom@freebsd.org>
List-Help: <mailto:freebsd-geom-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-geom>,
	<mailto:freebsd-geom-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 24 Jan 2006 22:43:17 -0000

On Tue, 24 Jan 2006 23:27:47 +0100 Pawel Jakub Dawidek
<pjd@FreeBSD.org> wrote:

> On Sun, Jan 22, 2006 at 07:22:57PM +0300, Sergey Lungu wrote:
> +> Hello,
> +> 
> +> I have FreeBSD 6.0-RELEASE running on my FTP server. There are
> three +> disks on that box: two identical 120GB and one 300GB. I am
> using gvinum +> for stripping between first two disks. I am going to
> give gstripe a +> try, sine gvinum is too unstable.
> +> 
> +> So, the questin is:
> +> Am I able to concatenate created stripe with 300GB disk? And is it
> wise +> at all?
> 
> I'd do something like this:
> 
> da0 - 120GB disk
> da1 - 120GB disk
> da2 - 300GB disk
> 
> da2a - 240GB partition
> da2d - 60GB partition
> 
> concat( stripe( concat(da0, da1), da2a ), da2d)
> 
> In other words:
> 
> 	# gconcat C0 da0 da1
> 	# gstripe S0 concat/C0 da2a
> 	# gconcat C1 stripe/S0 da2d
> 	# newfs -U /dev/concat/C1
> 
> This way you have 240GB in stripe and only 60GB without stripe (so
> slower).

Nice :)
Perhaps this is dangerous and slow!?
I'll try that.

What about:
	da0  - 120GB
	da1  - 120GB
	da2  - 300GB
	da2a - 120GB
	da2d - 120GB
	da2e - 60GB

	concat(stripe(da0, da1, da2a, da2e), da2e)

>From mathematical point of view this looks simplified :)

-- 
Sergey Lungu

It is better for civilization to be going down the drain,
than to be coming up it.