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Date:      Wed, 4 Feb 2004 13:27:10 +0300
From:      Sergey 'DoubleF' Zaharchenko <doublef@tele-kom.ru>
To:        scott@sremick.net
Cc:        FreeBSD <freebsd-questions@freebsd.org>
Subject:   Re: "Cannot find file system superblock" error - how to recover?
Message-ID:  <20040204132710.78956223@Hal.localdomain>
In-Reply-To: <20040204070505.15051.qmail@web41110.mail.yahoo.com>
References:  <20040204082855.5111c74d@Hal.localdomain> <20040204070505.15051.qmail@web41110.mail.yahoo.com>

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On Tue, 3 Feb 2004 23:05:05 -0800 (PST)
"Scott I. Remick" <scott@sremick.net> probably wrote:

> --- Sergey 'DoubleF' Zaharchenko <doublef@tele-kom.ru> wrote:
> > Sorry, you were recovering an 80G disk, and now you say the 80G has 4.9
> > on it. Did you erase anything? Is this a remote machine?

> No, it was not the drive that had the OS on it. It was originally mounted as
> /data on a system that had FreeBSD 5.1 installed on a separate drive. We
> determined the 80GB was UFS1. You wanted to try troubleshooting using
> FreeBSD 4.9, so I obtained a spare system which I installed FreeBSD
> 4.9-RELEASE on. I then moved the 80GB from the 5.1 system (which is actually
> 5.2 now) and installed it into the 4.9 system on the 2nd controller. So now
> 4.9 is installed on a 20GB on /dev/ad0, and our problem 80GB is /dev/ad2.

Thank you for the explanation.

> > You can boot 4.9, right? Examine the output of disklabel ...s1 and
> > ...s1c to make heart feel better.

> bash-2.05b# disklabel /dev/ad2s1
[snip]
> 8 partitions:
> #        size   offset    fstype   [fsize bsize bps/cpg]
>   c: 156344517        0    unused        0     0        # (Cyl.    0 - 9731*)
>   e: 156344517        0    4.2BSD     2048 16384    89  # (Cyl.    0 - 9731*)

> bash-2.05b# disklabel /dev/ad2s1c
[snip]
> 8 partitions:
> #        size   offset    fstype   [fsize bsize bps/cpg]
>   c: 156344517        0    unused        0     0        # (Cyl.    0 - 9731*)
>   e: 156344517        0    4.2BSD     2048 16384    89  # (Cyl.    0 - 9731*)

Good:)

Well, as it's UFS1 as we've figured out, the next logical thing would be to
try mounting /dev/ad2s1c r/o, and if that fails, try fscking it.

--
DoubleF
The faster we go, the rounder we get.
		-- The Grateful Dead

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