growisofs warnings when writing to Blu-ray Dual Layer discs

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http://serverfault.com – I'm archiving my media collection onto BD-R Dual Layer discs but keep getting the following IO errors at the end of the writing process (usually > 95% complete) : :-[ WRITE@LBA=168e800h failed with SK=5h/END OF USER AREA ENCOUNTERED ON THIS TRACK]: Input/output error :-( write failed: Input/output error /dev/sr0: flushing cache /dev/sr0: closing track /dev/sr0: closing session :-[ CLOSE SESSION failed with SK=5h/INVALID FIELD IN CDB]: Input/output error /dev/sr0: reloading tray My archiving process is detailed below: dirsplit -m -s 46G /path/to/folder > divides the original 61G folder in (HowTos)