Can't increment mergeinfo count ... to negative value

I have a problem with my subversion repository. I'm currently not able to do copy operations on the repository.

If I try to copy a part of the repository to a new folder in the repository I get the following error

[Wed Nov 03 10:50:42 2010] [error] [client 10.10.62.5] Could not MOVE/COPY /svn/Server/!svn/bc/41280/trunk. [500, #0]

[Wed Nov 03 10:50:42 2010] [error] [client 10.10.62.5] Unable to make a filesystem copy. [500, #160004]

[Wed Nov 03 10:50:42 2010] [error] [client 10.10.62.5] Can't increment mergeinfo count on node-revision 0.0.t41280-ub6 to negative value -8520666390062167758 [500, #160004]

Can anybody tell me what the cause of this error me开发者_如何学运维ssage is and what I can do to resolve it?

Regards Bosco

Looks like you have some data corruption. Do a svnadmin verify on the server and check the health of your server disk.

edit: The error code associated with the error message in the SVN source code is SVN_ERR_FS_CORRUPT, so I'm pretty sure there is data corruption in your repository. The fact that svnadmin verify does not detect this is most likely a bug which you should report at http://subversion.apache.org/. But first make sure that you still have these issues (both the original problem and the fact that svnadmin verify does not report errors) after installing the latest version of SVN on the server.

I've already done the verification. It results in no error. The strange thing is that I can commit, merge and do every other operation on the repository. The only thing that doesn't work is doing a copy operation.