major minor  #blocks  name

   8        0  976762584 sda
   8        1     291840 sda1
   8        2     292864 sda2
   8        3  976176128 sda3
  11        0    1048575 sr0
 253        0   19529728 dm-0
 253        1    1949696 dm-1
 253        2   10240000 dm-2
 253        3   20480000 dm-3