I recently started using Fedora with btrfs, which I think was the default on install. So far all I’ve noticed is that backups and restores are really fast and easy.
Are there any important things to be aware of, like speed, drive lifespan or energy efficiency?
openSUSE is now one big btrfs partition. They dropped the separate xfs for the home partition maybe two years ago or so. It makes it less likely to run into a situation where the snapshots fill up the root partition (which is really ugly to recover from, because users will try to uninstall packages, which doesn’t help, since the files are still contained in a previous snapshot)…