File: //proc/thread-self/root/proc/thread-self/root/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 : 22262 7 8500 [ 4 5 6 6 2 6 3 2 2 3 1 1 0 2 ]
#1 : 7923 10 318 [ 5 7 6 3 3 2 3 5 3 0 0 1 1 0 ]
#2 : 3706 8 3438 [ 6 8 3 3 2 1 2 3 2 3 1 0 0 0 ]
#3 : 17452 2 3797 [ 2 1 0 1 0 1 0 0 2 1 0 0 0 2 ]
#4 : 19845 5 0 [ 1 4 1 1 1 1 1 2 2 3 1 0 4 0 ]
#5 : 32511 1 257 [ 1 1 1 1 1 1 1 1 0 1 1 1 1 3 ]
#6 : 32768 1 0 [ 0 0 0 0 0 0 0 0 0 0 0 0 0 4 ]
#7 : 32511 1 257 [ 1 1 1 1 1 1 1 1 0 1 1 1 1 3 ]
#8 : 8281 18 16384 [ 15 11 7 3 0 0 0 0 0 0 0 2 1 0 ]
#9 : 13291 4 257 [ 3 2 3 1 3 3 3 1 0 1 2 1 0 1 ]
#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 : 32768 1 0 [ 0 0 0 0 0 0 0 0 0 0 0 0 0 4 ]
#15 : 9249 18 0 [ 7 9 8 3 1 2 2 2 0 1 0 0 2 0 ]