major minor  #blocks  name

   8        0  488386584 sda
   8        1     204800 sda1
   8        2     512000 sda2
   8        3  487668736 sda3
 253        0  487666688 dm-0
 253        1   52428800 dm-1
 253        2   15396864 dm-2
 253        3  419840000 dm-3
