btrfs check --readonly --backup

[1/7] checking root items
parent transid verify failed on 9529403506688 wanted 714057 found 714132
parent transid verify failed on 9529403506688 wanted 714057 found 714132
parent transid verify failed on 9529403506688 wanted 714057 found 714132
Ignoring transid failure
parent transid verify failed on 9529403523072 wanted 714057 found 714132
parent transid verify failed on 9529403523072 wanted 714057 found 714132
parent transid verify failed on 9529403523072 wanted 714057 found 714132
Ignoring transid failure
parent transid verify failed on 9529403998208 wanted 714057 found 714132
parent transid verify failed on 9529403998208 wanted 714057 found 714132
parent transid verify failed on 9529403998208 wanted 714057 found 714132
Ignoring transid failure
parent transid verify failed on 9529404014592 wanted 714057 found 714132
parent transid verify failed on 9529404014592 wanted 714057 found 714132
parent transid verify failed on 9529404014592 wanted 714057 found 714132
Ignoring transid failure
ERROR: child eb corrupted: parent bytenr=8175299641344 item=122 parent level=1 child level=1
ERROR: failed to repair root items: Input/output error
Opening filesystem to check...
Checking filesystem on /dev/<something>
UUID: <something>