Not the OP, but I used btrfs till a couple of years ago for my root partition. Because of the nature of snapshots, the partition gradually fills up after big s

Not the OP, but I used btrfs till a couple of years ago for my root partition. Because of the nature of snapshots, the partition gradually fills up after big system updates. The usual `df` command is inaccurate with btrfs. Instead there's a set of btrfs specific tooling that you need to learn which can show the actual space in use. Freeing up unused space from older snapshots also requires manual work. I often had to start removing the oldest snapshot and it'd turn out that it didn't free up enough space. Continue repeating the step of deleting oldest snapshot and hoping it frees up enough space. It's possible the tooling is better/convenient now, but I prefer to stick with ext4 now.