Re: ext3 corruption

From: Molle Bestefich
Date: Wed Aug 09 2006 - 06:33:51 EST

Molle Bestefich wrote:
I have a ~1TB filesystem that fails to mount, the message is:

EXT3-fs error (device loop0): ext3_check_descriptors: Block bitmap for
group 2338 not in group (block 1607003381)!
EXT3-fs: group descriptors corrupted !

A day before, it worked flawlessly.

What could have happened, and what's the best course of action?

I should probably mention that I've been bitten by e2fsck before.
I had a filesystem with minor damage, but after running e2fsck it was
completely nuked.
Nothing was recoverable.

So before anyone suggest running e2fsck, I'd really like someone
knowledgeable to tell me what e2fsck is going to do about "group
descriptors corrupted" *BEFORE* I go ahead and blindly run it.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at