File: //proc/self/root/proc/thread-self/root/proc/thread-self/root/proc/fs/ext4/sda1/mb_groups
#group: free frags first [ 2^0 2^1 2^2 2^3 2^4 2^5 2^6 2^7 2^8 2^9 2^10 2^11 2^12 2^13 ]
#0 : 28511 1 4257 [ 1 1 1 1 1 0 1 0 1 1 1 1 0 3 ]
#1 : 8570 8 183 [ 8 5 4 5 3 2 5 3 6 0 0 1 1 0 ]
#2 : 15441 21 6861 [ 7 11 11 13 8 5 2 4 2 1 1 4 1 0 ]
#3 : 27649 11 129 [ 7 5 6 5 5 1 1 0 1 3 5 6 2 0 ]
#4 : 16913 2 8192 [ 1 0 0 0 1 0 0 0 0 1 0 2 1 1 ]
#5 : 4732 3 822 [ 2 3 1 2 0 1 1 2 1 2 1 1 0 0 ]
#6 : 31243 2 0 [ 1 1 2 0 2 1 1 1 1 0 2 0 1 3 ]
#7 : 32639 1 129 [ 1 1 1 1 1 1 1 0 1 1 1 1 1 3 ]