I work with a guy who has cddl&#x27;d his project . He likes the license ; I don&#x27;t nag him to change it to an isc license . He has his reasons for the cddl, I might not agree with all of it but I am great full he open sourced it .  If sun &#x2F;oracle didn&#x27;t open source zfs or dtrace we would be all be using Solaris and paying to use it . So if FreeBSD , NetBSD , illumos have a properly compatable licenses for zfs . Embrace that ; if you don&#x27;t want to, check out dragonflybsd and hammerfs, look at btree on Linux , check out openbfs on haiku . 
I can&#x27;t stress this enough Canonical is a shitty company who needs to make waves to stay relevant . I don&#x27;t know why anyone uses their crap . Wait I remember they are a commercial company with a marketing department who gets paid to polish that turd . What was so bad about Debian ? If you don&#x27;t like Debian Why not give a a bsd a try . Hell why not just try Smart os and a lx-branded zone . You get zfs , dtrace , and all of the ful of full Linux comparability .