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Re: FSFS Issue...

From: John Szakmeister <john_at_szakmeister.net>
Date: 2005-12-17 01:54:24 CET

On Sunday 04 December 2005 11:23, Malcolm Rowe wrote:
> On Sat, Dec 03, 2005 at 08:33:53PM -0500, John Szakmeister wrote:
> > Very interesting. I think I'm going to have to digest that for a little
> > while with some code in front of me though. I think I'll first try to
> > recreate the corruption now that I realize I may have the data to do it.
> Here's a concrete example, again using your r94.

Sorry I've been so quite lately... I've had some pretty tough hours at work
lately. I did manage to spend some time and take a look at those other
corrupted rev files. Your analysis is right on the mark for those files as
well. You can definitely see that the number of bytes overwritten is what
would have been left in a 4K buffer. I'm not sure where to proceed though.
I did see a suspicious looking bit of code in mod_dav_svn:is_our_resource()
where we attempt to coalesce some handles together but completely ignore all
errors. I haven't had much time lately to look into mod_dav_svn any further
though. At this point, it'll be sometime after the New Year before I get a
chance to really do a thorough audit of that code.

Just thought I'd keep you posted.


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Received on Sat Dec 17 01:55:10 2005

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