linux-ext4 - Re: EXT4-fs (dm-0): unsupported inode size: 0

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Message-ID: <20101102143143.GB25614@thunk.org>
Date:	Tue, 2 Nov 2010 10:31:43 -0400
From:	Ted Ts'o <tytso@....edu>
To:	Pol Hallen <ext4@...karound.org>
Cc:	linux-ext4@...r.kernel.org
Subject: Re: EXT4-fs (dm-0): unsupported inode size: 0

On Tue, Nov 02, 2010 at 02:29:06PM +0100, Pol Hallen wrote:
> Hi folks :-)
> 
> on a backup usb disk I've formatted ext4 (debian stable, kernel (2.6.32 
> vanilla).
> 
> Later sometimes when i try to mount this disk in syslog I see:
> 
> EXT4-fs (dm-0): unsupported inode size: 0
> 
> the health how disk is good..
> 
> tune2fs -l /dev/disk is:
> 
> tune2fs 1.41.12 (17-May-2010)
> tune2fs: Filesystem revision too high while trying to open /dev/mapper/pp
> Couldn't find valid filesystem superblock.
> 
> what is the problem? Is an ext4 problem?

Sounds like your superblock got corrupted in an interesting way.  Try
"e2fsck -b 32768 /dev/disk".

					- Ted
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