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Re: How well ext3 will tolerate errors?



Hi,

On Tue, Apr 23, 2002 at 03:48:40AM +0300, Jani Averbach wrote:
> On Mon, 22 Apr 2002, Stephen C. Tweedie wrote:

> > If the error is data corruption, then either parts of the journal will
> > be silently ignored (corrupting active metadata on the fs), or you'll
> > end up copying garbage to active filesystem metadata.
 
> And the metadata will be corrupted (obviously). What then? Is it
> recoverable by e2fsck?

It depends.

> I guess that the answer would be "it depends"

Yes. :)

*All* bets are off if you get bit flip errors.  Things become, by
definition, unpredictable.

> > Bitmaps, inode tables, directories.
 
> What are the changes that these errors are recoverable?

Bitmaps are always recoverable by e2fsck.  Pretty much everything else
will damage the fs to some extent.

Cheers,
 Stephen





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