If I'm not mistaken, Sun did the same thing with Solaris and ZFS; rolling forwards or backwards was just a matter of choosing the rootfs snapshot of choice. You

If I'm not mistaken, Sun did the same thing with Solaris and ZFS; rolling forwards or backwards was just a matter of choosing the rootfs snapshot of choice. You can even run multiple zones from the same base snapshot and have their own (ephemeral) writes on their own timelines. And on BSD we can do similar things with Jails. Considering all those technologies (LCX, cgv2, Jails, Zones, containerd etc.), you'd think we're all heading for the same goal and might as well combine strengths instead of yet another packaging/state manager method. Maybe once Snap, Flatpak, Nix etc. all get one or two generational replacements we'll get the state/mutability/layered approach right (at least on Linux) and we can all focus on MAC in a way that is less convoluted than LSM/AppArmor etc. But I bet we'll all still be in SBOM hell for years to come before that gets attention again.