Heyha ! Read about dd on makeuseof after reading your post, to see how it works.
Restoring from an image seems exactly what I was looking for as a full backup restore.
However this kind of 1 command backup isn’t going to work on databases (mariadb, mysql…). How should I procede with my home directory where all my containers live and most of them having running databases?
Does it work with logical volumes? Is it possible to copy evrything except /home of the logical volumes?
Okay, thank you :)) too bad it looked liked a simple and elegant way…