On Sat, Jan 05, 2013 at 11:31:19AM -0500, Bradley C. Kuszmaul wrote: > What are the requirements for alignment of punched holes? Is 512-byte > alignment good enough? (I'll have 512-byte alignment anyway since I'll be > using direct I/O on these files.) No alignment at all - they have byte range granularity. Cheers, Dave. -- Dave Chinner david at fromorbit.com