Navidrome Migration Script

Normally, if you change the path to your music library, you will lose all of your ratings and play metadata (play counts, last played, etc). This is because Navidrome sees new paths to your music, and will remove the old ones. The purpose of this script is to update the paths in Navidrome so you can keep your metadata if you have to move your music library.

What it does

To make Navidrome recognize your new library, you have to make your media files consistent. This requires two things:

The media files should point to the new path
The ID of your the file should be md5sum(new path)

How to use this script

Full Library Migration

This is useful if you have changed the path to your entire library (e.g. migrating from one machine to another, different host path)

Usage:

Stop Navidrome.
Back up your database (make a copy of navidrome.db). If there are navidrome.db-shm and navidrome.db-wal, save those as well.
Make note of the original path to your music library. This must be the FULL path to your library.
Copy/move your music to the new music folder. (The script will check the validity of the new paths)
- The new music path may contain symlinks if needed
Run the migration script: python3 migrate.py PATH_TO_DB ORIGINAL_MUSIC_FOLDER NEW_MUSIC_FOLDER.
Change the MusicFolder/ND_MUSICFOLDER variable to point to the new location of your library.
Start Navidrome, and run a full scan.

Switching between Windows and Linux/macOS

Migrating from Windows to a Linux/Mac (or vice versa) can be a pain. If you moved your files already and, use the --dos2unix option (or --unix2dos) and it will convert paths from Windows (\) to Unix (/) or vice versa.

NOTE: you should run this option on the DESTINATION OS if you want validations to work (they make sure that files exist at the new directory).

From Windows to Linux/macOS

python3 migrate.py navidrome.db  'E:\Media Server Content\' '/mnt/drive/Media Server Content/' --dos2unix

This will replace something such as E:\Media Server Content\blah\blah.mp3 to /mnt/drive/Media Server Content/blah/blah.mp3

From Linux/macOS to Windows:

python3 migrate.py navidrome.db changeLink '/mnt/drive/Media Server Content/' 'E:\Media Server Content\' --unix2dos

This will replace something such as /mnt/drive/Media Server Content/blah/blah.mp3 to E:\Media Server Content\blah\blah.mp3

Moving file/directory

This is useful if you just want to move a single folder in your library.

CAUTION: this script will move the target file/directory to the new location. If you have specified an existing file, it will get overridden.

Usage: python3 migrate.py PATH_TO_DB OLD_PATH NEW_PATH --move --partial

Notes:

If NEW_PATH is a directory, the file/directory at OLD_PATH will be moved into this directory (not overwrite).
Your database is only modified if the move succeeds. Note that a move is not guaranteed to be atomic (e.g. you are moving from one disk to another, and the destination fills up)
Similar to migration, you should stop Navidrome before doing this. However, the entire operation is atomic with respect to the database, so you can do this live.
If you omit --partial, this will move your entire library. In this case you must stop Navidrome first