UDF enhancements (read-write CD/DVD file system)

July 13, 2009 posted by Reinoud Zandijk

UDF is a full read-write operating system independent file system to be used on CD and DVD media but also very usable on `flash media'. See the OSTA website and Wikipedia for a more in depth overview. A read-only version made it to NetBSD-4.0 and a full read-write version made it to NetBSD-5.0

Recent enhancements to UDF available in NetBSD-current and pulled up to netbsd-5 are

  • Accurate disc space calculation that won't allow overfilling discs that could previously panic the machine.
  • Rewritten read-modify-write backend.
  • Significant reduction of system time spend when encountering huge numbers of nodes.


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