File: //proc/fs/ext4/sdc2/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 : 2992 15 8792 [ 4 2 4 3 8 8 6 9 4 0 0 0 0 0 ]
#1 : 10819 27 640 [ 11 10 13 18 18 16 19 17 15 1 2 0 0 0 ]
#2 : 4407 11 519 [ 3 4 7 6 6 4 8 10 3 3 0 0 0 0 ]
#3 : 3961 11 579 [ 5 4 5 5 7 6 4 2 2 3 1 0 0 0 ]
#4 : 2302 14 582 [ 2 10 8 7 11 3 6 4 2 1 0 0 0 0 ]
#5 : 28739 25 584 [ 11 12 8 14 19 3 8 8 4 2 4 2 0 2 ]
#6 : 14169 18 514 [ 3 5 3 4 8 5 4 4 5 3 4 1 1 0 ]
#7 : 6625 24 579 [ 3 9 5 7 14 7 5 3 7 3 2 0 0 0 ]