Sonarr can't import episodes Win32 IO returned 50

Sonarr version (exact version): 3.0.6.1196
Mono version (if Sonarr is not running on Windows): 5.20.1.34
OS: Docker - 3.0.6.1196-ls103 by linuxserver.io
Debug logs: link
Description of issue: Sonarr can’t import episodes

I’m running Sonarr on docker (on a Qnap NAS) it has been working fine for a couple of months, but since last week this error has made impossible for it to import episodes.

“System.IO.IOException: Win32 IO returned 50.”

All shows are blocked because of this.

I have two volumes mounted on the docker container:

  • /downloads: where other container with transmission dumps the downloaded files.
  • /tv: target folder which Plex reads from.

From the container I can move files between both volumes. I used cp and mv, both worked fine. There is plenty free space on the target disc.

I have read things about downgrading mono. I don’t understand what is “mono” or how to downgrade it.

I would appreciate any help. Thanks a lot.

  1. /tv and /download generally means your dockering wrong… double space for seeds and extra HDD abuse; see https://trash-guides.info/hardlinks

  2. those are not debug logs at all…those are maybe events?
    https://wiki.servarr.com/Sonarr_Troubleshooting#Logging_and_Log_Files

  3. the error is a QNAP issue / you issue: “Disk quota exceeded”
    Presumably you have some quotas set on the disk and that is the root cause of the problem…perhaps on a per user basis? i.e. the user sonarr is running as?

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