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Re: Debilitating "Checksum Mismatch" Errors

From: Karl Fogel <kfogel_at_google.com>
Date: 2006-09-02 06:51:56 CEST

"P. Michael Hutchins" <pmh0232@draper.com> writes:
> I'm working on a large, multi-contractor project, for which an
> administrator set up a svn server.
> Almost every time I try to do an svn update, it fails due to a
> checksum mismatch..
> ..eg: Error: Checksum mismatch for [snip] updates.log'; expected:
> 05d99cf6749910c077d723f6de01816d', actual:
> 6c1154361b8aed07c961064b6ea31a85

I sympathize with how frustrating this must be. But, it might help if
we knew some basic stuff, such as the version(s) of svn client and
server, the operating systems on which everything is running, whether
virus-scanning software is also running, when in your workcycle the
errors typically start appearing, etc. Details take time, but they
are the main way answers get found.

See http://subversion.tigris.org/bugs.html for more about how to
report bugs / ask questions.

Good luck,

> The only thing I've found that will enable me to proceed is to delete
> either the file that's mentioned..
> (in my ~sandbox~)
> (I was gonna say the "offending" file, but I don't understand the
> error message well enf to know whether it's referring to a file on the
> server or my local copy.)
> ..or the whole folder it's in.
> ...which is annoying, disruptive - and takes a good while ... to
> download lotsa files all over again.
> Our task leader doesn't have this problem, for some reason - but
> everyone else here does - to the point that they gave up trying to use
> svn long ago -- and similarly for many at the other contractors.
> I've spent vast quantities of time trying to research what the problem
> might be - only to have to give up, due to the enormous number of
> Google hits on this: Clearly, this is a huge problem with svn.
> I give very very little credence to notions of cosmic rays, network
> errors, file corruption, etc. as possible causes for this problem -
> especially since one of us alleges to not have these problems.
> So all I can do is beseech you to advise me/us how to track down
> what's going wrong, & get it fixed.
> Is it possible that people can write files to the server in
> (extra-svn, maybe) ways that would cause this?
> That's what seems most likely to me.
> Can a user say "I could not care less about what you think the
> checksums should be - and I certainly don't want the update I
> requested to be disrupted by such checks."? I would in a heartbeat.
> Thank you,
> -- M.
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Received on Sat Sep 2 06:53:14 2006

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