btrfsck --readonly exited with status code 0
[1/7] checking root items
[2/7] checking extents
[3/7] checking free space tree
[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)
Opening filesystem to check...
Checking filesystem on /tmp/781013993.img
UUID: d552757d-9c39-40e3-95f0-16d819589928
found 57344 bytes used, no error found
total csum bytes: 96
total tree bytes: 45056
total fs tree bytes: 16384
total extent tree bytes: 4096
btree space waste bytes: 33999
file data blocks allocated: 12288
 referenced 12288