Permission errors when trying to move transcodes from cache to library

[zolointo]

Describe the bug
I noticed a cache drive full error in unraid, and then discovered that my tdarr docker's 100 file staging area was full.

Every file had a Status of Copy failed . Not certain on how long this had been going on for.

There seems to be a permissions issue based on the Copy Failed log output, but I am unable to recreate it in a console connection or troubleshoot further.

Attempted Troubleshooting

1. Tried re-queueing everything. Same Copy Failed error
2. Tried changing the PUID and PGID, but no impact
3. Ran container in Priviledged mode. No impact.
4. Verified I am able to ls/mk/rm/cp in the cache and media folders

Environment
Unraid 6.11.5
tdarr docker latest, shows up-to-date

Please provide the following information:
Docker run command
docker run
  -d
  --name='tdarr'
  --net='br0'
  --ip='192.168.1.121'
  --privileged=true
  -e TZ="America/New_York"
  -e HOST_OS="Unraid"
  -e HOST_HOSTNAME="server"
  -e HOST_CONTAINERNAME="tdarr"
  -e 'serverIP'='192.168.1.121'
  -e 'TCP_PORT_8266'='8266'
  -e 'TCP_PORT_8265'='8265'
  -e 'PUID'='99'
  -e 'PGID'='100'
  -e 'internalNode'='false'
  -e 'nodeIP'='0.0.0.0'
  -e 'nodeID'='MyInternalNode'
  -e 'TCP_PORT_8264'='8264'
  -e 'TCP_PORT_NODEPORT'='8264'
  -e 'NVIDIA_VISIBLE_DEVICES'='GPU-8b3a0c88-d852-6fc2-ccb1-cc60591ad36a'
  -e 'NVIDIA_DRIVER_CAPABILITIES'='all'
  -l net.unraid.docker.managed=dockerman
  -l net.unraid.docker.webui='http://[IP]:[PORT:8265]'
  -l net.unraid.docker.icon='https://raw.githubusercontent.com/selfhosters/unRAID-CA-templates/master/templates/img/tdarr.png'
  -v '/mnt/user/appdata/tdarr/server':'/app/server':'rw'
  -v '/mnt/user/appdata/tdarr/configs':'/app/configs':'rw'
  -v '/mnt/user/appdata/tdarr/logs':'/app/logs':'rw'
  -v '/mnt/user/media/':'/mnt/media':'rw'
  -v '/mnt/cache/tdarr_cache/':'/temp':'rw'
  --runtime=nvidia 'haveagitgat/tdarr'

Copy Failed log:
2023-01-09T13:47:24.810Z dcRz2RtKg:[Step S02] Beginning move/copy operation
2023-01-09T13:47:24.811Z dcRz2RtKg:Calculating old and new sizes of the following files
2023-01-09T13:47:24.811Z dcRz2RtKg:/mnt/media/TV/this & show/Season 5/episode folder/episode.mkv
2023-01-09T13:47:24.812Z dcRz2RtKg:/temp/episode-TdarrCacheFile-5DRWpLzWfJ.mkv
2023-01-09T13:47:24.812Z dcRz2RtKg:Old size 0.49176764115691185. New size 0.3193208696320653
2023-01-09T13:47:24.813Z dcRz2RtKg:Folder to folder conversion is off
2023-01-09T13:47:24.813Z dcRz2RtKg:New file path /mnt/media/TV/this & show/Season 5/episode folder/episode-TdarrCacheFile-8BxXkYFWJ0.mkv
2023-01-09T13:47:24.814Z dcRz2RtKg:Ensuring output folder path exists /mnt/media/TV/this & show/Season 5/episode folder
2023-01-09T13:47:25.815Z dcRz2RtKg:Calculating cache file size in bytes
2023-01-09T13:47:25.815Z dcRz2RtKg:342868173
2023-01-09T13:47:25.816Z dcRz2RtKg:Attempting to move cache file to output folder, method 1
2023-01-09T13:47:25.817Z dcRz2RtKg:File move error: Error: EXDEV: cross-device link not permitted, rename '/temp/episode-TdarrCacheFile-5DRWpLzWfJ.mkv' -> '/mnt/media/TV/this & show/Season 5/episode folder/episode-TdarrCacheFile-8BxXkYFWJ0.mkv'
2023-01-09T13:47:25.817Z dcRz2RtKg:File move error: Cache file /temp/episode-TdarrCacheFile-5DRWpLzWfJ.mkv (342868173 bytes) does not match size of new cache file /mnt/media/TV/this & show/Season 5/episode folder/episode-TdarrCacheFile-8BxXkYFWJ0.mkv (0 bytes)
2023-01-09T13:47:25.818Z dcRz2RtKg:Attempting to move cache file to output folder, method 2
2023-01-09T13:47:25.818Z dcRz2RtKg:File move error: Error: EACCES: permission denied, copyfile '/temp/episode-TdarrCacheFile-5DRWpLzWfJ.mkv' -> '/mnt/media/TV/this & show/Season 5/episode folder/episode-TdarrCacheFile-8BxXkYFWJ0.mkv'
2023-01-09T13:47:25.819Z dcRz2RtKg:File move error: Cache file /temp/episode-TdarrCacheFile-5DRWpLzWfJ.mkv (342868173 bytes) does not match size of new cache file /mnt/media/TV/this & show/Season 5/episode folder/episode-TdarrCacheFile-8BxXkYFWJ0.mkv (0 bytes)
2023-01-09T13:47:25.820Z dcRz2RtKg:Attempting to copy

[zolointo]

Found the solution on Discord.

Some of the sub-folders in my Media folder didn't have write permissions.

I did this:

• opened a console session in unraid to the tdarr docker
• switched to the media folder: /mnt/media
• applied a chmod -R 777
• applied a chown -R abc:users
• clicked the Retry Copy button (or whatever it was called)

Success! The files moved over immediately and the next round of transcodes were queued up without issue.