linux-ext4 - Re: ext4 - error with root drive mount

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Message-ID: <20090204062400.GZ14762@mit.edu>
Date:	Wed, 4 Feb 2009 01:24:00 -0500
From:	Theodore Tso <tytso@....edu>
To:	Jimmy Rentz <jedynamic@...lsouth.net>
Cc:	linux-ext4@...r.kernel.org
Subject: Re: ext4 - error with root drive mount

On Tue, Feb 03, 2009 at 07:15:31PM -0500, Jimmy Rentz wrote:
> 	I am unable to mount my ext4 root drive. 
> 
> 	I get this error:
> 	EXT4-fs: ext4_check_descriptors: Block bitmap for group 2688
> 	not in group (block 4205711663)!<3>EXT4-fs: group descriptors
> 	corrupted!
> 
> 	I had a similar error some time ago, but I thought it was power
> 	related.  I fixed the problem by running a fcsk.  

You'll need to fix it using fsck again.  I assume the back up
superblocks will have the correct value.

It would be interesting to see if there are any other errors picked up
by e2fsck.

> 	Any tips to debug this?

Can you reliably replicate this problem?  I've not seen any similar
reports of problems like this.

						- Ted
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