File: //proc/fs/ext4/sda2/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 : 24274 1 8494 [ 0 1 0 0 1 0 1 1 0 1 1 1 1 2 ]
#1 : 25606 13 258 [ 6 6 3 5 4 0 2 2 2 4 2 2 0 2 ]
#2 : 32094 3 82 [ 2 2 2 2 2 3 1 3 3 0 0 1 1 3 ]
#3 : 32511 1 257 [ 1 1 1 1 1 1 1 1 0 1 1 1 1 3 ]
#4 : 32768 1 0 [ 0 0 0 0 0 0 0 0 0 0 0 0 0 4 ]
#5 : 5302 2 257 [ 2 2 2 1 2 2 1 2 1 1 0 2 0 0 ]
#6 : 32089 1 679 [ 1 0 0 1 1 0 1 0 1 0 1 1 1 3 ]
#7 : 32511 1 257 [ 1 1 1 1 1 1 1 1 0 1 1 1 1 3 ]
#8 : 16384 1 16384 [ 0 0 0 0 0 0 0 0 0 0 0 0 0 2 ]
#9 : 32511 1 257 [ 1 1 1 1 1 1 1 1 0 1 1 1 1 3 ]
#10 : 32768 1 0 [ 0 0 0 0 0 0 0 0 0 0 0 0 0 4 ]
#11 : 32768 1 0 [ 0 0 0 0 0 0 0 0 0 0 0 0 0 4 ]
#12 : 32768 1 0 [ 0 0 0 0 0 0 0 0 0 0 0 0 0 4 ]
#13 : 32768 1 0 [ 0 0 0 0 0 0 0 0 0 0 0 0 0 4 ]
#14 : 11919 4 0 [ 1 1 1 1 2 1 1 2 1 0 1 1 0 1 ]
#15 : 21423 1 11345 [ 1 1 1 1 0 1 0 1 1 1 0 0 1 2 ]