It seems to me like the directory where volumes are stored is not stored in memory on my part, and in the Unraid docker image file (which maybe isn't ideal, but it works): Filesystem Size Used Avail Use% Mounted on /dev/loop2 100G 77G 22G 78% /var/lib/docker /dev/loop2: [0040]:1613693 (/mnt/cache/system/docker/docker.img) Is there something in the way that Unraid handles that mapping, or is it something with the way the app interacts with docker volumes? I was positive this was working for me before updating to Unraid 7.x, so maybe I'm missing something.