How can I restore the user accounts after restoring the dump file, so that the repository starts functioning with the former user accounts and access rules?
According to Version Control with Subversion:
The Subversion repository dump format describes versioned repository changes only. It will not carry any information about uncommitted transactions, user locks on filesystem paths, repository or server configuration customizations (including hook scripts), and so on.
However, if you still have access to the old repository you may try copying the contents of conf subdirectory to the new repository (provided you are using vanilla svn authentication, and not HTTP/DAV).
来源：https://stackoverflow.com/questions/10186527/restore-users-in-svn-after-migration