Date: Sat, 21 Jul 2007 09:25:19 -0400 From: Tony Holmes <tony@crosswinds.net> To: Arne =?iso-8859-1?Q?W=F6rner?= <arne_woerner@yahoo.com> Cc: freebsd-geom@freebsd.org Subject: Re: Geom striped mirrors questions Message-ID: <20070721132519.GA49264@crosswinds.net> In-Reply-To: <990910.43461.qm@web30309.mail.mud.yahoo.com> References: <20070721121240.GA45291@crosswinds.net> <990910.43461.qm@web30309.mail.mud.yahoo.com>
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> --- Tony Holmes <tony@crosswinds.net> 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.
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