Burning Blu Ray Discs

Look at this blog
For mkudffs, see arch: udftools

What I get is

24712708096/25000000000 (98.9%) @0.9x, remaining 1:08 RBU 100.0% UBU  76.6%
24726929408/25000000000 (98.9%) @0.9x, remaining 1:04 RBU 100.0% UBU  79.7%
24741150720/25000000000 (99.0%) @0.9x, remaining 1:01 RBU 100.0% UBU  85.9%
24755372032/25000000000 (99.0%) @0.9x, remaining 0:58 RBU 100.0% UBU  73.4%
:-[ WRITE@LBA=b87400h failed with SK=5h/END OF USER AREA ENCOUNTERED ON THIS TRACK]: Input/output error
:-( write failed: Input/output error
/dev/sr2: flushing cache
/dev/sr2: closing track
/dev/sr2: closing session
:-[ CLOSE SESSION failed with SK=5h/INVALID FIELD IN CDB]: Input/output error
/dev/sr2: reloading tray