major minor  #blocks  name

   8        0  976762584 sda
   8        1    1951744 sda1
   8        2  974809088 sda2
   8       16  976762584 sdb
   8       17    1951744 sdb1
   8       18  974809088 sdb2
   9        0    1950720 md0
   9        1  974678016 md1
 253        0   19529728 dm-0
 253        1    1949696 dm-1
 253        2  838860800 dm-2