On Thu, 11 Dec 2008 8:19:03 am Ray Van Dolson wrote:

> I'm not sure why this hasn't caught on, but as soon as a solid and fast
> implementation of it exists in the Linux world I really think it can
> catch on for VM datastores.... I know we've hollered at Sun as to why
> they haven't rolled it out for ZFS yet!

Might NetApp have patented the technique ?

Would be a similar situation to the issues [1] that the KSM work [2] fell into 
with trying to prevent duplication of pages.

cheers,
Chris

[1] - http://lwn.net/Articles/309155/
[2] - http://lwn.net/Articles/306704/

-- 
 Chris Samuel  :  http://www.csamuel.org/  :  Melbourne, VIC

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