status of copy-on-write filesystem?

[Chris Friesen]

I'm doing some work where it would simplify things greatly to have 
copy-on-write semantics available.

I've seen overlayfs and the proposed "-union" option for mount,  but 
there doesn't seem to be anything thats really ready for serious use.

Am I missing something?  Is someone working on this?


Thanks,

Chris


--
Chris Friesen                    | MailStop: 043/33/F10
Nortel Networks                  | work: (613) 765-0557
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