Opening filesystem to check...
Checking filesystem on /dev/mapper/ST2000DL003-###############
UUID: 8039cd28-5e4c-46a7-8a5f-############
[1/7] checking root items
[2/7] checking extents
Chunk[256, 228, 2000512090112] stripe[2, 1048576] is not found in dev extent
Chunk[256, 228, 2001585831936] stripe[2, 313542049792] is not found in dev extent
Chunk[256, 228, 2001619386368] stripe[2, 832159350784] is not found in dev extent
Device extent[3, 831110774784, 1073741824] didn't find the relative chunk.
Device extent[3, 833258258432, 33554432] didn't find the relative chunk.
Device extent[3, 833291812864, 1073741824] didn't find the relative chunk.
Dev extent's total-byte(832183468032) is not equal to byte-used(358629769216) in dev[1, 216, 2]
Dev extent's total-byte(834364506112) is not equal to byte-used(709743345664) in dev[1, 216, 3]
ERROR: errors found in extent allocation tree or chunk allocation
[3/7] checking free space cache
block group 1166181138432 has wrong amount of free space, free space cache has 17334272 block group has 17350656
failed to load free space cache for block group 1166181138432
there is no free space entry for 1999438381056-1999438479360
cache appears valid but isn't 1999438348288
[4/7] checking fs roots
[5/7] checking only csums items (without verifying data)
[6/7] checking root refs
[7/7] checking quota groups skipped (not enabled on this FS)
found 829745819648 bytes used, error(s) found
total csum bytes: 808489372
total tree bytes: 1653473280
total fs tree bytes: 736575488
total extent tree bytes: 64471040
btree space waste bytes: 192745626
file data blocks allocated: 835171110912
 referenced 827757674496