[sciurus]

The author goes to great lengths to come up with a way for the software that was running on a terminated spot instance to be relaunched using the same root filesystem on a new spot instance, but they never explain why they need to do exactly this. Maybe they already ran everything in Docker containers on CoreOS, so their solution isn't a big shift, but I strongly suspect they could find a simpler way to save and restore state if they got over this obsession with preserving the root filesystem their software sees.