Re: ext3 corruption

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On Tue, 8 Aug 2006, 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
                  ^^^^^^^^^^^_________

It seems as though you have a LOT of RAM if you can make a 1TB
filesystem on the loopback device!

Seriously, what are you doing, attempting to mount a big file-system
through the loop-back device or is this a copied-down message message
you got during boot when initrd tried to mount a RAM disk?

> group 2338 not in group (block 1607003381)!
> EXT3-fs: group descriptors corrupted !
>

Ordinary disk repair involves running fsck on an UNMOUNTED file-system.

> A day before, it worked flawlessly.
>
> What could have happened, and what's the best course of action?

Any bad RAM, any shutdown without a proper unmount, any device hardware
error like DMA not completing properly, can cause file-system corruption.
That's why there are tools to fix it.


Cheers,
Dick Johnson
Penguin : Linux version 2.6.16.24 on an i686 machine (5592.62 BogoMips).
New book: http://www.AbominableFirebug.com/
_


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