WARNING: Failed to connect to lvmetad. Falling back to device scanning.
  Volume group "ubuntu-vg" not found
  Cannot process volume group ubuntu-vg
  WARNING: Failed to connect to lvmetad. Falling back to device scanning.
  Reading all physical volumes.  This may take a while...
  Found volume group "ubuntu-vg" using metadata type lvm2
  WARNING: Failed to connect to lvmetad. Falling back to device scanning.
  2 logical volume(s) in volume group "ubuntu-vg" now active
/dev/mapper/ubuntu--vg-root: clean, 140397/491520 files, 925206/1966080 blocks