[ovirt-users] fail to restore ovirt-engine

please someone, any ideas? engine-backup --mode=restore --file=backup --log=log_file_name --provision-db --restore-permissions Preparing to restore: - Unpacking file 'backup' Restoring: - Files Provisioning PostgreSQL users/databases: - user 'engine', database 'engine' FATAL: Existing database 'engine' or user 'engine' found and temporary ones created - Please clean up everything and try again