Stress testing the UFS2 filesystem

[Kris Kennaway]

On Wed, May 03, 2006 at 07:48:17AM +0200, Bj?rn K?nig wrote:
> Kris Kennaway schrieb:
> >On Wed, May 03, 2006 at 12:32:29AM +0400, Pavel Merdine wrote:
> >>Of course I think we could do patches to overcome corrupting panics,
> >>but the core FreeBSD team would not accept this, as they are happy
> >>with panics and corruptions they make to other filesystems.
> >
> >Of course not, don't make silly accusations :-)
> >
> >The problem is much more difficult to solve than "making the panic an
> >error return".
> 
> I'm interested in more information about this issue. Do you have a 
> reference to an old discussion about this topic or do you like to 
> explain it a little bit further for me (and probably others)?

See the URL that Peter provided in his original post.

The issue that he is testing is how well the filesystem behaves when
you arbitrarily damage it and then run fsck (ideally, fsck should
detect all of the damage and repair it).  He seems to have found cases
where fsck does not detect and repair the damage, leading to panics at
runtime.

You can ignore Pavel's reply since he didn't have anything to add to
the discussion :-)

Kris
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