From owner-freebsd-geom@FreeBSD.ORG  Wed Feb  9 23:17:24 2005
Return-Path: <owner-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 8B36016A4CE
	for <geom@freebsd.org>; Wed,  9 Feb 2005 23:17:24 +0000 (GMT)
Received: from critter.freebsd.dk (f170.freebsd.dk [212.242.86.170])
	by mx1.FreeBSD.org (Postfix) with ESMTP id B73AC43D1F
	for <geom@freebsd.org>; Wed,  9 Feb 2005 23:17:23 +0000 (GMT)
	(envelope-from phk@critter.freebsd.dk)
Received: from critter.freebsd.dk (localhost [127.0.0.1])
	by critter.freebsd.dk (8.13.1/8.13.1) with ESMTP id j19NHL4U003534;
	Thu, 10 Feb 2005 00:17:21 +0100 (CET)
	(envelope-from phk@critter.freebsd.dk)
To: des@des.no (=?iso-8859-1?q?Dag-Erling_Sm=F8rgrav?=)
From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
In-Reply-To: Your message of "Thu, 10 Feb 2005 00:14:40 +0100."
             <86y8dxiavz.fsf@dwp.des.no> 
Date: Thu, 10 Feb 2005 00:17:21 +0100
Message-ID: <3533.1107991041@critter.freebsd.dk>
Sender: phk@critter.freebsd.dk
cc: geom@freebsd.org
Subject: Re: getting a little carried away? 
X-BeenThere: freebsd-geom@freebsd.org
X-Mailman-Version: 2.1.1
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: Wed, 09 Feb 2005 23:17:24 -0000

In message <86y8dxiavz.fsf@dwp.des.no>, =?iso-8859-1?q?Dag-Erling_Sm=F8rgrav?= 
writes:
>this box has a RAID-1 array with a single slice containing six
>partitions:
>
>des@dwp ~% ls /dev/ar0*
>/dev/ar0        /dev/ar0s1a     /dev/ar0s1c     /dev/ar0s1e     /dev/ar0s1g
>/dev/ar0s1      /dev/ar0s1b     /dev/ar0s1d     /dev/ar0s1f
>
>the components of ar0 are ad4 and ad6.  I realize that a component in
>a RAID-1 array "tastes the same" to GEOM as a standalone disk, but I
>think this is a bit much, especially the adMcsN stuff:
>
>des@dwp ~% ls /dev/ad[46]*
>/dev/ad4        /dev/ad4cs1f    /dev/ad4s1e     /dev/ad6cs1c    /dev/ad6s1b
>/dev/ad4a       /dev/ad4cs1g    /dev/ad4s1f     /dev/ad6cs1d    /dev/ad6s1c
>/dev/ad4b       /dev/ad4d       /dev/ad4s1g     /dev/ad6cs1e    /dev/ad6s1d
>/dev/ad4c       /dev/ad4e       /dev/ad6        /dev/ad6cs1f    /dev/ad6s1e
>/dev/ad4cs1     /dev/ad4f       /dev/ad6a       /dev/ad6cs1g    /dev/ad6s1f
>/dev/ad4cs1a    /dev/ad4s1      /dev/ad6b       /dev/ad6d       /dev/ad6s1g
>/dev/ad4cs1b    /dev/ad4s1a     /dev/ad6c       /dev/ad6e
>/dev/ad4cs1c    /dev/ad4s1b     /dev/ad6cs1     /dev/ad6f
>/dev/ad4cs1d    /dev/ad4s1c     /dev/ad6cs1a    /dev/ad6s1
>/dev/ad4cs1e    /dev/ad4s1d     /dev/ad6cs1b    /dev/ad6s1a
>
>is this normal?  more to the point, is it desirable?

yes and yes.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.