For a moment, comparing ZFS for Mac with ZFS in modern versions of Solaris …

*Encryption*

File system-level encryption for ZEVO and/or OpenZFS is very near the top 
of my wish list. 
<http://open-zfs.org/wiki/Projects#Platform_agnostic_encryption_support> 
reflects the OpenZFS developer communities' preference for compatibility 
with Oracle's closed implementation. 

Encrypted ZFS; and then I can free myself from the constraints of Apple 
Core Storage!

*Encryption aside*

I have no immediate need for the other features that Oracle added to closed 
source Solaris. YMMV :-)

*Open-source activities*

On Thursday, 10 October 2013 13:53:47 UTC+1, John Patrick wrote:

… OpenSolaris died and so the opensource drive to keep that active, it 
> seams to have stagnated
>

Truly, for a long time it was hard (for people like me) to get the big 
picture. 

Since OpenZFS launched, it should be easier to see how much has happened 
since the 2010 fork from the last release of OpenSolaris. My favourite 
quote from recent weeks: 

"… To some degree, OpenZFS is just putting a name to what we have already 
been doing as a community …"

– Eric Schrock (tweeted by me at <
https://twitter.com/grahamperrin/status/380395699734466560>). 
 

> behind the functionality provided by the Solaris version 
>

FYI 
<http://open-zfs.org/wiki/Talk:FAQ#Usability_of_Oracle_ZFS_pool_versions_29_and_greater>
 
 

> and all the issues with copyright, kernel mobiles vs user modules.
>

Licensing issues are frequently discussed but – as I see things – 
ultimately not an impediment to development. 

Linux perspective: 
<http://open-zfs.org/wiki/Talk:FAQ#Linux_licensing_questions> for some 
points of discussion that were spun off from the main FAQ page. 
Essentially: 

* it's fine to build and redistribute binary ZFS kernel modules. 

My Mac perspective: 

* in the respective licenses, there's nothing to prevent Apple from making 
great use of ZFS-related software. 

<https://news.ycombinator.com/item?id=6403566> for a Mac-related point from 
Hacker News discussion of the OpenZFS launch 
<https://news.ycombinator.com/item?id=6400175>. 

GP

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