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Date:      Wed, 27 Jun 2007 10:05:12 +0200
From:      Nico -telmich- Schottelius <nico-freebsd-geom@schottelius.org>
To:        Arne =?utf-8?Q?W=F6rner?= <arne_woerner@yahoo.com>
Cc:        freebsd-geom@freebsd.org
Subject:   Re: Size of metadate?
Message-ID:  <20070627080512.GD19980@schottelius.org>
In-Reply-To: <66779.12351.qm@web30315.mail.mud.yahoo.com>
References:  <20070627074338.GC19980@schottelius.org> <66779.12351.qm@web30315.mail.mud.yahoo.com>

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Arne W=EF=BF=BDrner [Wed, Jun 27, 2007 at 12:57:45AM -0700]:
> > >   sysctl kern.geom.debugflags=3D16
> > >   dd of=3D/dev/amrd0 if=3D/dev/zero bs=3D512 skip=3D286746623 count=
=3D1
> > > [...]
> >=20
> > I am currently trying that: top reports that dd now uses 99% cpu and it
> > is running for about 3 minutes.
> >=20
> > I am wondering how long this may run?
> >=20
> Ohoh...
>=20
> It skips block from the input device...
> But it will not seek in the output device...

Hmpf, that's why seek=3D was mentioned...

> SO: TERMINATE IT!!! :-))

Too late.

> Or ur first sector on amrd0 will be destroyed FOREVER...!

So, any hints on how to recover the first 512 bytes for me?

Btw, I just repeated it with the seek=3D and it worked!

Now I've just to restore the mbr=20

   a) is there somewhere a copy in memory?
   B) redoing it shouldn't be a big problem, as the layout was written
   down :-)

Nico

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

PGP: BFE4 C736 ABE5 406F 8F42  F7CF B8BE F92A 9885 188C

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