From owner-freebsd-arch@FreeBSD.ORG  Wed Nov 12 23:14:47 2003
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To: Peter Jeremy <PeterJeremy@optushome.com.au>
From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
In-Reply-To: Your message of "Thu, 13 Nov 2003 17:42:51 +1100."
             <20031113064251.GB39616@cirb503493.alcatel.com.au> 
Date: Thu, 13 Nov 2003 08:14:42 +0100
Message-ID: <4937.1068707682@critter.freebsd.dk>
cc: arch@freebsd.org
Subject: Re: newfs and mount vs. half-baked disks 
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In message <20031113064251.GB39616@cirb503493.alcatel.com.au>, Peter Jeremy wri
tes:
>On Wed, Nov 12, 2003 at 09:56:14AM +0100, Poul-Henning Kamp wrote:
>>It might not be a bad idea to store the relevant magics in a
>>/etc/ufs.conf file, but there are some details about device vs.
>>media/filesystem identification in particular in context of dynanic
>>devices to that must be worked out.
>
>How do you handle the situation when the master superblock on / is
>hosed and you need to find the filesystem parameters (in
>/etc/ufs.conf) before you can access /?

I usually take great care to always newfs / with default parameters,
because then I can use newfs -N /dev/ad0a to see where the superblocks
are to be found.

>If the BSD-style disklabels are going away, at least the root
>parameters need to be in the boot blocks or somewhere similar.

Sure, send a patch.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.