major minor  #blocks  name

   8        0 1874329600 sda
   8       16  468851544 sdb
   8       17     614400 sdb1
   8       18    1048576 sdb2
   8       19  467186688 sdb3
 253        0   52428800 dm-0
 253        1    4194304 dm-1
 253        2 1874325504 dm-2
 253        3  410562560 dm-3
