It’s it a well known issue of database rebuild taking days for large backup sets. But this time it’s will rclone & od4b.
The reason od4b with rclone backend is to bypass 5k files limit per directory in od.
Database rebuild starts & rclone process starts & closes then doesn’t return back to task manager. Duplicati UI stays at Re-creating database for days doing nothing.
The only way to proceed is:
rclone -v -P sync od4b: backups D:\backups
Change destination path & rebuild database.
Tried with rclone 1.42, 1.44 Duplicati 220.127.116.11 & 18.104.22.168