> And the original paper on ZFS that appears to have been scrubbed from the internet mentions WAFL repeatedly (and you were a co-author so I'm not sure why you're saying you didn't reference NetApp or WAFL):

Cantrill was not involved in ZFS, and was not a co-author. Cantrill was involved with DTrace:

* https://www.usenix.org/conference/2004-usenix-annual-technic...

* https://www.cs.princeton.edu/courses/archive/fall05/cos518/p...

And the ZFS paper has hardly been scrubbed given it is widely cited:

* https://www.cs.hmc.edu/~rhodes/cs134/readings/The%20Zettabyt...

And the fact that the ZFS paper cites WAFL is hardly an indication of anything, given that NetApp's patent cites a whole bunch of other patents:

* https://patents.google.com/patent/US5819292#patentCitations

Heck, some of the cited patents were Sun's.

* https://en.wikipedia.org/wiki/NetApp#Legal_dispute_with_Sun_...