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RE: Always reproducible base checksum mismatch error

From: Philipp Wollermann <philipp_at_igowo.de>
Date: 2007-11-22 14:36:33 CET

Hi again,

Philipp Wollermann wrote on 2007-11-22:
> John Szakmeister wrote on 2007-11-22:
>> Can you run 'svnadmin verify' on the repository? You're likely to get
>> the same error. If so, then you may be the first person I've met who
>> can consistently cause this fsfs corruption error. Changing to mpm-
>> prefork makes the issue go away, but I'm not entirely sure why.
> Changing to mpm-prefork didn't change anything (I remembered to
> completely restart apache). I still get the same error and WC
> corruption. If you like and have the time, we can meet on IRC to discuss
> the issue (my nick is philwo).

It gets funny. :) I investigated further:

Using BDB as backend works perfectly even over HTTP using mpm_worker. I'll convert my repository to BDB now, so we can continue working on our project, but I'd like to help you solve this FSFS-corruption bug.

So, to summarize, on my machine I can consistently reproduce the following:
FSFS + mpm_worker: WC corruption
FSFS + mpm_prefork: WC corruption
BDB + mpm_prefork: works perfectly
BDB + mpm_worker: works perfectly

Regards,
Philipp

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Received on Thu Nov 22 14:57:12 2007

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