(Responding to myself) I finally managed to get everything running, despite a very brittle and overly complicated process. See my gist: https://gist.github.com/renodino/5bd8adc661bd2f00a5b662ed0713fd0f ... View more

I'm getting consistent "overlay2: Unknown option dm.basesize" in the logfile when I follow your instructions. I've also tried your storage-opt hack below, which produces the same error. I'm using Amazon Linux, and have plenty of storage config'd. Any ideas ? ... View more