CoreOS Container Linux (haven't checked out Fedora CoreOS) and its' fork Flatcar Linux do that. I couldn't find any good doc about this, but the idea is that:

CoreOS Container Linux (haven't checked out Fedora CoreOS) and its' fork Flatcar Linux do that. I couldn't find any good doc about this, but the idea is that: - RO /usr contains all the system, the rest is populated with tmpfilesd - There is two /usr partitions, the active one is selected with GPT priority attribute https://github.com/endocode/coreos-docs/blob/master/os/sdk-disk-partitions.md https://github.com/endocode/coreos-docs/blob/master/os/sdk-d...