[1/7] checking root items
[2/7] checking extents
[3/7] checking free space cache
failed to load free space cache for block group 25802579902464
failed to load free space cache for block group 25809181999104
failed to load free space cache for block group 25825311195136
failed to load free space cache for block group 25874871615488
failed to load free space cache for block group 25878688169984
failed to load free space cache for block group 25943870799872
failed to load free space cache for block group 25953791115264
failed to load free space cache for block group 25958034964480
failed to load free space cache for block group 26009165627392
failed to load free space cache for block group 26012416475136
failed to load free space cache for block group 26017191690240
failed to load free space cache for block group 26022993723392
failed to load free space cache for block group 26026326622208
failed to load free space cache for block group 26028005392384
failed to load free space cache for block group 26029697531904
failed to load free space cache for block group 26031335145472
failed to load free space cache for block group 26035739688960
failed to load free space cache for block group 26038951477248
failed to load free space cache for block group 26040670617600
failed to load free space cache for block group 26042488586240
failed to load free space cache for block group 26044310487040
failed to load free space cache for block group 26046139990016
failed to load free space cache for block group 26050416345088
failed to load free space cache for block group 26052245848064
failed to load free space cache for block group 27028807483392
failed to load free space cache for block group 27097526960128
failed to load free space cache for block group 27100748185600
failed to load free space cache for block group 27219933528064
failed to load free space cache for block group 27223154753536
failed to load free space cache for block group 27255367008256
[4/7] checking fs roots
[5/7] checking csums against data
mirror 2 bytenr 24480918798336 csum 236 expected csum 69
mirror 2 bytenr 24480918802432 csum 222 expected csum 206
mirror 2 bytenr 24480918806528 csum 22 expected csum 7
mirror 2 bytenr 24480918810624 csum 48 expected csum 150
mirror 2 bytenr 24480918814720 csum 139 expected csum 181
mirror 2 bytenr 24480918818816 csum 226 expected csum 203
mirror 2 bytenr 24480918822912 csum 238 expected csum 232
mirror 2 bytenr 24480918827008 csum 20 expected csum 247
mirror 2 bytenr 24480918831104 csum 232 expected csum 248
mirror 2 bytenr 24480918835200 csum 250 expected csum 181
mirror 2 bytenr 24480918839296 csum 143 expected csum 204
mirror 2 bytenr 24480918843392 csum 87 expected csum 164
mirror 2 bytenr 24480918847488 csum 162 expected csum 166
mirror 2 bytenr 24480918851584 csum 236 expected csum 239
mirror 2 bytenr 24480918855680 csum 224 expected csum 14
mirror 2 bytenr 24480918859776 csum 106 expected csum 92
[6/7] checking root refs
[7/7] checking quota groups skipped (not enabled on this FS)
Opening filesystem to check...
Checking filesystem on /dev/sdc
UUID: 9a2b7e4c-9825-47b0-88a2-b9cd9079174a
found 2200805031936 bytes used, no error found
total csum bytes: 2123914692
total tree bytes: 8101658624
total fs tree bytes: 4638113792
total extent tree bytes: 864944128
btree space waste bytes: 1454151410
file data blocks allocated: 13500945055744
 referenced 2770421379072