I have been playing around with building a media server using Jellyfin along with Sonarr, Radarr and Jackett on Nixos using the native packages. I can get everything working, but I am running into an issue where Jellyfin play back will stop working. When I go play something the poster will come up but will never play. Also, when I log into the web app and am not playing anything the blue circle in the center of the page indicating processing will always be there.
I have been watching the Jellyfin error logs and will get stuff like:
[ERR]  Jellyfin.Server.Middleware.ExceptionMiddleware: Error processing request. URL "GET" "/LiveTv/Programs/Recommended". System.UnauthorizedAccessException: Access to the path '/dev/shm/lttng-ust-wait-8-276' is denied.
[ERR]  Jellyfin.Server.Middleware.ExceptionMiddleware: Error processing request. URL "GET" "/LiveTv/Programs/Recommended". System.UnauthorizedAccessException: Access to the path '/dev/shm/mono.1607' is denied.
When I look in /dev/shm:
sudo ls -la /dev/shm/ total 12 drwxrwxrwt 2 root root 100 Oct 23 11:30 . drwxr-xr-x 19 root root 3540 Oct 23 12:12 .. -rw-rw-rw- 1 jackett media 4096 Oct 23 08:04 lttng-ust-wait-8 -rw-r----- 1 jackett media 4096 Oct 23 08:04 lttng-ust-wait-8-276 -rw-r----- 1 sonarr media 4096 Oct 23 08:04 mono.1607
I should point out that don’t think I have ever seen a Radarr file here, but I am lumping it in with the rest.
I think what is going on here is that Sonarr, Radarr or Jackett are creating these files first and setting the permission such that Jellyfin can’t access them. I have tested this by disabling Sonarr, Radarr or Jackett and removing the files and when I do so Jellyfin works fine.
I am not sure if this is an issue with Nixos, Jellyfin, etc. or an underlining library like mono so I am not sure where to post a bug report. I am posting here to see if someone smarter than me has any idea how to proceed. Or point out its user error, and I am just doing something wrong.