nuke_btrfs_docker.sh

#!/usr/bin/env bash

if [[ $UID != 0 ]]; then
  echo "Must be run as root (Try: sudo ${0})"
  exit 1
fi

echo "This script nukes dockers graph directory & any btrfs subvolumes in it"
echo "Abort with ctrl+c now if you don't want this to happen (nuking starts in 10s)"
sleep 10

systemctl stop docker
btrfs subvolume list / | grep var/lib/docker | awk '{print "/" $9}' | xargs btrfs subvolume delete
rm -rf /var/lib/docker

echo "Restart docker with: "
echo -e "\tsystemctl start docker"
echo ""
echo "You can check dockers status with:"
echo -e "\tsystemctl status docker"