major minor #blocks name 8 16 976762584 sdb 8 17 4198400 sdb1 8 18 2099200 sdb2 8 19 1049600 sdb3 8 20 969413632 sdb4 8 0 976762584 sda 8 1 4198400 sda1 8 2 2099200 sda2 8 3 1049600 sda3 8 4 969413632 sda4 9 127 4193280 md127 9 126 2096128 md126 9 125 969281536 md125 9 124 1049536 md124 7 0 4194304 loop0