Btrfs Fedora 16 de-duplication

I have been using btrfs for my /home sense Fedora 15 was in RC1, and I always though that it was doing de-duplication on all files for me, but I recently learend that it is not, how disappointing… I then started to look in to what options I have with btrfs, and I learned from #btrfs on irc.freenode.net that I accurately can copy files so they de-duplicate. I made this little silent video, to give a live demo of de-duplication.

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