From owner-freebsd-geom@FreeBSD.ORG Sat Jul 21 13:24:57 2007 Return-Path: Delivered-To: freebsd-geom@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id BCDE216A417 for ; Sat, 21 Jul 2007 13:24:57 +0000 (UTC) (envelope-from tony@crosswinds.net) Received: from out-mx1.crosswinds.net (out-mx1.crosswinds.net [216.18.117.38]) by mx1.freebsd.org (Postfix) with ESMTP id 97BE613C45D for ; Sat, 21 Jul 2007 13:24:57 +0000 (UTC) (envelope-from tony@crosswinds.net) Received: from admin.crosswinds.net (out-mx1.crosswinds.net [216.18.117.38]) by out-mx1.crosswinds.net (Postfix) with ESMTP id 2407E2C485; Sat, 21 Jul 2007 09:25:19 -0400 (EDT) Received: by admin.crosswinds.net (Postfix, from userid 1001) id 0F59E403D; Sat, 21 Jul 2007 09:25:19 -0400 (EDT) Date: Sat, 21 Jul 2007 09:25:19 -0400 From: Tony Holmes To: Arne =?iso-8859-1?Q?W=F6rner?= Message-ID: <20070721132519.GA49264@crosswinds.net> References: <20070721121240.GA45291@crosswinds.net> <990910.43461.qm@web30309.mail.mud.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <990910.43461.qm@web30309.mail.mud.yahoo.com> User-Agent: Mutt/1.4.2.1i Cc: freebsd-geom@freebsd.org Subject: Re: Geom striped mirrors questions X-BeenThere: freebsd-geom@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: GEOM-specific discussions and implementations List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 21 Jul 2007 13:24:57 -0000 > --- Tony Holmes wrote: > > I am trying to set up a RAID 10 data array using 12 identical 33gb scsi > > disks. 2 are being kept for spares > > > > First I set up a single slice on each disk using: > > > > fdisk -I -1 /dev/da{0,1,2,3,4,5,6,7,8,9,10,11,12,13} > > > What is this good for? > > > Jul 21 08:06:57 db kernel: GEOM_STRIPE: Disk mirror/dm0 attached to ds0. > > Jul 21 08:06:57 db kernel: GEOM_STRIPE: Cannot add disk mirror/dm0c to ds0 > > (error=17). > > Jul 21 08:06:57 db kernel: GEOM_STRIPE: Disk mirror/dm1 attached to ds0. > > > I would interpret this as follows: > gstripe takes dm0 and dm1 into its ds0... > When it sniffed at dm0c it saw, that it has the same meta data as dm0, which > results in error number (errno) 17 (EEXISTS /usr/include/errno.h)... > > Resolution: > You should delete the fdisk meta data in the beginning (first 63 sectors) of > each disk for "cosmetic" reasons, because: > 1. It is not used... > 2. It creates unnecessary warnings... Ahhh, that was the basis of my confusion. I will try that! Thanks for the super fast response :) -- Tony Holmes Ph: (416) 993-1219 Founder and Senior Systems Architect Crosswinds Internet Communications Inc.