Incident on 21/10/2021. NixOS ZFS partition on laptop reported 0 available bytes on all pools. Teardown: Tried to setup Android Studio with emulator capabilities on my NixOS machine Installed a bunch of packages. Nix the package manager sucks up a lot of storage if not properly scrubbed. Installed and built so much on my machine that suddenly nothing worked anymore. du reported 100% full on everything.