Failed to rename .tmp to stream.m3u

Noticed a strange entry in the log when testing transcoding this evening. ffmpeg is throwing an unable to rename .tmp to .m3u due to permission denied. Is this something I should be concerned about?

My set up is an LXC instance running under root with an SMB share mount and hosting my channels directory. I did check and root is the owner for the mount and has the appropriate permissions. Channels and ffmpeg appear to be running under root as well.

For anyone that finds this thread down the line, ffmpeg does not like the transcoding folder being mounted. Going to try and move it with a symlink and see what happens.