On Tue, 5 Mar 2013, David Magda wrote:
It's also possible to reduce the amount that rsync has to walk the entire
file tree.

Most folks simply do a "rsync --options /my/source/ /the/dest/", but if
you use "zfs diff", and parse/feed the output of that to rsync, then the
amount of thrashing can probably be minimized. Especially useful for file
hierarchies that very many individual files, so you don't have to stat()
every single one.

Zfs diff only works for zfs filesystems. If one is using zfs filesystems then rsync may not be the best option. In the real world, data may be sourced from many types of systems and filesystems.

Bob Friesenhahn
bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/
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