XFS: the filesystem of the future?

Indeed. I have also read that deduplication on ZFS is 'broken' but I did not have a link to back that up. Still, technology has a way of improving such that 'resource usage' and maturity concerns of today become unimportant in 'the future'.

I agree that snapshotting/cloning are exciting features of systems like ZFS. The 'time-slider' that Sun added to Nautilus in OpenSolaris invoked quite a lot of jealousy in me. I also thought that Nexenta integrating ZFS into 'apt-get' with 'apt-clone' was simply brilliant. (Note: on Ubuntu, 'apt-clone' is something else)

As a developer, I sometimes do silly thing like build or install a bleeding edge version of an important library which I later regret. I would love to have a simple and seamless way to roll-back the clock or easily hit the save button just before I do something stupid. Version control is great for code repositories but it does not really help me when I mess up my filesystem or install a broken version on an IDE. Not that I do those kinds of things of course...