Mike, I believe that ZFS treats runs of zeros as holes in a sparse file, rather than as regular data. So they aren't really present to be counted for compressratio.
http://blogs.sun.com/bonwick/entry/seek_hole_and_seek_data http://mail.opensolaris.org/pipermail/zfs-discuss/2008-April/017565.html -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
