Unraid rclone sync - "no space left on device"

I’v run into an issue with me trying to sync my media storage from my unraid setup. I’v done a sync of a bunch of small files, but after switching to syncing my media share, I suddenly get a “no space left on device” … im guessin that rclone somehow might store a temp copy of whatever file I am uploading. First bunch of files (lotsof small ones) went well, but this media archive isnt really doing very well. Just getting the same error for all files… Any thoughts by chance?