On Mon, Sep 17, 2012 at 10:04:34PM -0400, Theodore Ts'o wrote:

Does anyone have test cases for SEEK_HOLE/SEEK_DATA handy?  As near as I
can tell xfstests doesn't have any tests for SEEK_HOLE/SEEK_DATA
functionality, and I was hoping someone had some test programs and test
sets already written.

Perhaps a cc to xfs@oss.sgi.com so the xfstests maintainers see the
question would be a sensible idea?

As it is, there are tests pending check-in that test
seek-data/seek-hole functionality - they were used to verify the
unwritten extent aware XFS implementation that recently went into
the kernel....

Cheers,

Dave.
-- 
Dave Chinner
david@fromorbit.com