How to manually delete backups

[TomTomGo]

@uroni

For reference, this is the section:

11.4 Cleaning the storage folder of files not known by UrBackup

Sometimes, e.g., by using a database backup, there are backups in the storage directory which UrBackupdoes not know about, i.e., there are no entries for those backups in the database. Or there areentries in the database which are not in the storage directory (any more). In those cases thecommand

urbackupsrv remove-unknown

on GNU/Linux or on Windows:

remove_unknown.bat

removes files and folders in the urbackup storage directory which are not present in the UrBackupdatabase.

This also goes over all symlinks and corrects them if necessary.

So in order to remove some image backups manually, we just have to delete the matching subvolumes (with BTRFS storage) from the storage and run urbackupsrv remove-unknown ?
Or do we have to delete matching entries from backup_server.db and run urbackupsrv remove-unknown ?

Regards,