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Date:      Fri, 29 Nov 2002 15:31:00 -0500
From:      Alexander Kabaev <ak03@gte.com>
To:        Wesley Morgan <morganw@chemikals.org>
Cc:        current@FreeBSD.ORG
Subject:   Re: Trashed Disk Labels
Message-ID:  <20021129153100.0112b71a.ak03@gte.com>
In-Reply-To: <20021129145155.I8411-100000@volatile.chemikals.org>
References:  <200211291938.gATJcS59077381@beastie.mckusick.com> <20021129145155.I8411-100000@volatile.chemikals.org>

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On Fri, 29 Nov 2002 14:53:06 -0500 (EST)
Wesley Morgan <morganw@chemikals.org> wrote:

> On Fri, 29 Nov 2002, Kirk McKusick wrote:
> 
> > I have had a report of a disk label getting trashed after booting
> > up to a kernel with the new UFS2 superblock format. I have just
> > checked in an update to ufs/ffs/ffs_vfsops.c (version 1.198) that
> > explicitly checks to make sure that it will not trash your disk
> > label. I highly recommend that you update to this version, even if
> > you are only running with UFS1 filesystems.
> >
> > 	Kirk McKusick
> 
> Great! Any tools available to extract my var/db/pkg dirs from this image
> of my trashed UFS2 filesystem? :>
> 
> -- 
> Hi! I'm a .signature virus! Copy me into your ~/.signature to help me
> spread!
> 
> 
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I successfully used ffsfind utility to locate filesystem boundaries on a disk
I trashed some time ago. I do not have the utility source available anymore,
but you can track it down quite easily on google, I believe.

The one I used was actually posted for NetBSD, but it compiled with minimal
changes on FreeBSD and Solaris too. You will have to teach it to recognize
UFS2 magic.

-- 
Alexander Kabaev

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