I found the VHD specification here: http://download.microsoft.com/download/f/f/e/ffef50a5-07dd-4cf8-aaa3-442c0673a029/Virtual%20Hard%20Disk%20Format%20Spec_10_18_06.doc
I am not sure if i understand it right, but it seems like data on disk gets "compressed" into the vhd (no empty space), so even a slight difference in the beginning of the file will slide through and ruin the pattern for block based dedup. As I am not an expert on file systems, someone with more expertise would be appreciated to look at this. Would be a real shame. -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
