From owner-freebsd-geom@FreeBSD.ORG  Wed Jun 27 07:52:51 2007
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Date: Wed, 27 Jun 2007 09:43:38 +0200
From: Nico -telmich- Schottelius <nico-freebsd-geom@schottelius.org>
To: Arne =?utf-8?Q?W=F6rner?= <arne_woerner@yahoo.com>
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Cc: freebsd-geom@freebsd.org
Subject: Re: Size of metadate?
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Arne W=EF=BF=BDrner [Tue, Jun 26, 2007 at 11:13:57PM -0700]:
> --- Nico -telmich- Schottelius <nico-freebsd-geom@schottelius.org> wrote:
> > ddna045# dd of=3D/dev/amrd0 if=3D/dev/zero bs=3D512 skip=3D286746623 co=
unt=3D1
> > dd: /dev/amrd0: Operation not permitted
> >=20
> I do not know, why this doesnt work...
>=20
> Is it possible, that amrd0 (or a partition/slice of it) is mounted somewh=
ere?

Yes:

ddna045# mount
/dev/amrd0s1a on / (ufs, local)


> [...]
> U could try the same dd command with sysctl kern.geom.debugflags set to 1=
6:
>   sysctl kern.geom.debugflags=3D16
>   dd of=3D/dev/amrd0 if=3D/dev/zero bs=3D512 skip=3D286746623 count=3D1
> [...]

I am currently trying that: top reports that dd now uses 99% cpu and it
is running for about 3 minutes.

I am wondering how long this may run?

Nico

--=20
Think about Free and Open Source Software (FOSS).
http://nico.schottelius.org/documentations/foss/the-term-foss/

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