There's a decent guide on the net for a btrfs setup of gentoo...managed to hack my way through the install for the desktop NitroPC mini Ive been playing with.
https://gist.github.com/xmawja/da6a7ee664271631ae5cd4de0dc4f249
Not for the faint of heart, I borked my boot a few times had to chroot in and completely rebuild it more than once, but finally got it to boot with timeshift saving snapshots and grub-btrfs adding them to the boot menu. Next up swing ifnthose will actually restore and testing the openRC daemon for autoupdating the grub menu. I'll write it.up eventually 😆



