I think Flatcar is alive and well. I haven't used it personally so I can't really comment much on it. As for building VM images, I don't actually do that in my

I think Flatcar is alive and well. I haven't used it personally so I can't really comment much on it. As for building VM images, I don't actually do that in my setup. I just use the base FCOS image, boot it with a barebones Butane to configure disks and then use the CoreOS Layering features to setup my workload. If you want to use ZFS on your setup, check out https://github.com/coreos/layering-examples/blob/main/build-zfs-module/Containerfile https://github.com/coreos/layering-examples/blob/main/build-... which has an example of building the ZFS on Linux module so you can setup your ZFS pools.