I’m using ZFS in RAID1 for my /home directory on Gentoo, but not for the root filesystem. Setting it up actually isn’t too bad. It should be straightforward to install and only a couple commands to create and mount the zpool.

When I upgrade the system, sometimes it does not autoimport the zpool on next boot, and I need to do a # zpool import -f pool_name && reboot, but otherwise there have been no issues.

General ZFS config info:

https://wiki.gentoo.org/wiki/ZFS#Zpools

https://wiki.archlinux.org/title/ZFS#Configuration

Root filesystem info:

https://wiki.gentoo.org/wiki/ZFS#ZFS_root

https://wiki.archlinux.org/title/Install_Arch_Linux_on_ZFS#Installation