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To: Bruce Evans <bde@zeta.org.au>
cc: guido@gvr.win.tue.nl, phk@critter.tfs.com, FreeBSD-hackers@FreeBSD.org
Subject: Re: disklabeling a vn device 
In-reply-to: Your message of "Tue, 01 Oct 1996 16:15:06 +1000."
             <199610010615.QAA15452@godzilla.zeta.org.au> 
Date: Mon, 30 Sep 1996 23:53:11 -0700
Message-ID: <23191.844152791@time.cdrom.com>
From: "Jordan K. Hubbard" <jkh@time.cdrom.com>
Sender: owner-hackers@FreeBSD.org
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> See /usr/src/release/doFS.sh for how to do it.  Gak!  NOT.  It edits

Nobody will be offended if you feel compelled to change any of that
script for the better.  However, the picture is still not quite so
rosy as you paint it:

> 	dd if=/dev/zero of=vnfile bs=1024k count=4
> 	vnconfig -c -s labels /dev/rvn0 vnfile

This spews:

	vn0: invalid primary partition table: no magic

Rather annoyingly on the console and can be fixed as Poul-Henning has
done in doFS.sh by doing instead:

 	dd if=/dev/zero of=vnfile bs=1024k count=4
	awk 'BEGIN {printf "%c%c", 85, 170}' | \
		dd of=vnfile obs=1 seek=510 conv=notrunc 2>/dev/null
 	vnconfig -c -s labels /dev/rvn0 vnfile

And:
	
> 	disklabel /dev/rvn0 | disklabel -R -r vn0 /dev/stdin

Produces:
	disklabel: /dev/rvn0c: Undefined error: 0

:-(

					Jordan