btrfs check --readonly

Checking filesystem on /dev/sda
UUID: 013cda95-8aab-4cb2-acdd-2f0f78036e02
checking extents
corrupt extent record: key 741942071296 168 1114112
ref mismatch on [741942071296 1114112] extent item 17870283321407697405, found 1
Backref 741942071296 root 5 owner 71723 offset 2589392896 num_refs 0 not found in extent tree
Incorrect local backref count on 741942071296 root 5 owner 71723 offset 2589392896 found 1 wanted 0 back 0x1924190
backpointer mismatch on [741942071296 1114112]
bad metadata [741942071296, 741943185408) crossing stripe boundary
bad extent [741942071296, 741943185408), type mismatch with chunk
Incorrect local backref count on 741943185408 root 5 owner 660806488293452 offset 63051125769457408 found 0 wanted 4160749568 back 0x1924390
Backref disk bytenr does not match extent record, bytenr=741943185408, ref bytenr=2199023255552
Backref 741943185408 root 5 owner 72012 offset 0 num_refs 0 not found in extent tree
Incorrect local backref count on 741943185408 root 5 owner 72012 offset 0 found 1 wanted 0 back 0x1921be0
backpointer mismatch on [741943185408 27484160]
checking free space cache
checking fs roots
checking csums
checking root refs
found 859558433576 bytes used err is 0
total csum bytes: 838453732
total tree bytes: 981811200
total fs tree bytes: 38387712
total extent tree bytes: 12320768
btree space waste bytes: 73256256
file data blocks allocated: 858788433920
 referenced 858787872768