Comment 1 for bug 1879928

Currently looking into a weird issue on the Pi4 4gb variant, which keeps failing docker tests with this:

docker: failed to register layer: write /var/snap/docker/common/var-lib-docker/image/overlay2/layerdb/tmp/write-set-491796711/diff: read-only file system.

The strange thing is it passed just fine on the 1gb and 2gb variants, so we're not yet sure if its related to the kernel yet or not.