Date: Mon, 4 Nov 2002 01:23:19 -0700
From: Andreas Dilger <adilger@clusterfs.com>
To: linux-kernel@vger.kernel.org
Subject: Re: [Q] how to mount ext2 partition accidentally mounted as ext3
Message-ID: <20021104012319.A12166@munet-d.enel.ucalgary.ca>
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In-Reply-To: <20021104075252.GA575@pazke.ipt>; from pazke@orbita1.ru on Mon, Nov 04, 2002 at 10:52:52AM +0300
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On Nov 04, 2002  10:52 +0300, Andrey Panin wrote:
> Currently I'm working on resurrection of SGI Visual Workstation support 
> for 2.5 and some progress was made last week. 
> VISWS kernel even mounts root fs now (doesn't matter thet framebuffer driver 
> can't draw anything on the screen and uhci-hcd doesn't work :))
> 
> But I made one stupid mistake: EXT3 filesystem was enabled in .config file
> used for VISWS kernel compilation. So after the first boot of this kernel,
> I found that old 2.2.10 kernel making my VISWS self hosting can't mount
> root fs complaining about nonsupported filesystem feature.
> 
> My question is how can I make this fs mountable by 2.2.10 again ?

You just need to run a modern e2fsck on the filesystem to flush the
journal and clear the "needs_recovery" flag.  Alternately mounting
it once with a 2.[45] kernel and do a clean shutdown will do the same.

Cheers, Andreas
--
Andreas Dilger  \ "If a man ate a pound of pasta and a pound of antipasto,
                 \  would they cancel out, leaving him still hungry?"
http://www-mddsp.enel.ucalgary.ca/People/adilger/               -- Dogbert
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