Notes

Problem

Sonarr wasn’t starting, regardless of how I tried to launch it.

Solution

Checked Sonarr log: ~/.config/NzbDrone/logs/nzbdrone.txt

Found scary message: System.Data.SQLite.SQLiteException: database disk image is malformed

Fixed it:

1. Go to Sonarr config directory: cd ~/.config/NzbDrone

2. Backup Sonarr DB: mv nzbdrone.db nzbdrone.bkp.db

3. Create new Sonarr DB: touch nzbdrone.db

4. Dump backup DB contents into new DB: sqlite3 nzbdrone.bkp.dp “.dump" | sqlite3 nzbdrone.db source

5. Remove backup: rm nzbdrone.bkp.db