svnadmin hotcopy — Make a hot copy of a repository.
This subcommand makes a full “hot” backup of your repository, including all hooks, configuration files, and, of course, database files. If you pass the --clean-logs switch, svnadmin will perform a hotcopy of your repository, and then remove unused Berkeley DB logs from the original repository. You can run this command at any time and make a safe copy of the repository, regardless of whether other processes are using the repository.