Error: no space left on device

[timmehtimtims]

Set up yesterday for the first time and it's started throwing this error:
Mar 9 12:06:33 ERR Failed watching new directory error="watch directory: /mnt/unionfs/movies/The Perfect Teacher (2010): no space left on device" path="/mnt/unionfs/movies/The Perfect Teacher (2010)" trigger=inotify

Have it setup to notify from radarr for the /mnt/unionfs/movies directory

[l3uddz]

is /mnt/unionfs a fuse mount? if so, inotify does not work with fuse as far as im aware.

your best option would be to point it towards a local folder, e.g. /mnt/local/movies

if the unionfs folder is indeed local and not a fuse mountpoint, you may be hitting an inotify watcher limit (see https://dev.to/rubiin/ubuntu-increase-inotify-watcher-file-watch-limit-kf4).

[l3uddz]

Assuming the above was the cause.