May be look at rsync and rsync lib (http://librsync.sourceforge.net/) code to see if a ZFS API could be design to help rsync/librsync in the future as well as diff.
It might be a good idea for POSIX to have a single checksum and a multi-checksum interface. One problem could be block sizes, if a file is re-written and is the same size it may have different ZFS record sizes within, if it was written over a long period of time (txg's)(ignoring compression), and therefore you could not use ZFS checksum to compare two files. Side Note: It would be nice if ZFS on every txg only wrote full record sizes unless it was short on memory, or a file was closed. Maybe the txg could happen more often if it just scanned for full recordsize's writes and closed files. Or block which had not be altered for three scan's.???? -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
