This is a useful tutorial
Pretty cool; one thing I found — I needed to leave the /boot off of the kernel line in config.txt — with the /boot, it wouldn’t. Additionally, running rpi-update (which wasn’t in your instructions) installs a kernel which does not have THIN configured, so the devmapper doesn’t work…
Additionally, the git clone line appears to be missing src/$WEAVE at the end.
I’m continuing to work through it; I plan to attempt to add swarm to the mix & will post once I have it working…..