}

# Mounts a persistent disk (formatting if needed) to store the persistent data
# on the master -- etcd's data, a few settings, and security certs/keys/tokens.
# safe-format-and-mount only formats an unformatted disk, and mkdir -p will
# leave a directory be if it already exists.
function mount-master-pd {
  find-master-pd
  if [[ -z "${MASTER_PD_DEVICE:-}" ]]; then
    return
  fi

  echo "Mounting master-pd"