It looks like he's only snapshotting the root file system. One needs a system to back up the kernels and initrds in /boot as well. Even better -- an easy method to switch between (kernel, rootfs) pairs like what `rpm-ostree` provides for Silverblue.
I noticed that too, but I wasn't sure (still am not) whether that was really an issue or not since Fedora updates kernels aggressively even during the lifecycle, so most of the time the upgrade will get the same or similar version of the kernel with it. Do you think it's a big enough problem worth adding the additional work/complexity?
i run the latest lts kernel on CentOS 7 in production and do not have any issues so I assume that it's not really a big deal as Linux kernel is fairly good with backward compatibility
