On Mon, Mar 18, 2024 at 3:50 PM Roger Oberholtzer
<roger.oberholtzer@gmail.com> wrote:
> Couldn't I make a snapshot via some other command than rollback?

Yes, you can make btrfs snapshot. Read "man btrfs-subvolume". It will
not be visible in the snapper interface until you add necessary
metadata. It will not be visible in the grub boot menu until you
recreate it (after having created snapper metadata). You will also
need to manually make it the default subvolume.

But if the goal is to just reboot into writable snapshot - you do not
need snapper configuration, so "btrfs subvolume snapshot" + "btrfs
subvolume set-default" will be enough.

The final option is to simply change the current snapshot to
read-write. There are many reasons why one should not do it, but if
you are desperate - see "man btrfs-property".