We had to move our svn repo to a different server. The paths to the repo were the same, but they were being served from, say server2.example.com instead of server1.example.com. Use the switch –relocate options in svn to make this happen.
$ svn switch --relocate svn+ssh://user@server1/usr/local/repos/trac/test svn+ssh://user@server2/user/local/repos/trac/test