At the september LISA meeting Jeff B. did suggest that they planned to - 
eventually - add the distributed aspect to ZFS, and when he's talking about the 
filesystem as a 'pool of blocks' it certainly seems like there's no reason 
(beyond some minor implementation issues :) why those blocks could not reside 
on different hosts. 

I have not looked at the ZFS implementation closely enough to know how it deals 
with protection of the inodes and directory structure (ie. if I lose a disk or 
host can I reconstruct the inodes and directory tree) so this may introduce 
some complexity if you want your filesystem to survive one- or multiple 
failures. 

I would've assumed this has been thought of, but after discovering that I can't 
add a disk to my raidz2 pool (but it's just a pool of blocks!) I'm slightly 
less confident of this ..
 
 
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