On Feb 15, 2013, at 11:08 AM, Edward Ned Harvey 

Anybody using maczfs / ZEVO?  Have good or bad things to say, in terms of 
reliability, performance, features?

My main reason for asking is this:  I have a mac, I use Time Machine, and I 
have VM's inside.  Time Machine, while great in general, has the limitation of 
being unable to intelligently identify changed bits inside a VM file.  So you 
have to exclude the VM from Time Machine, and you have to run backup software 
inside the VM.

I would greatly prefer, if it's reliable, to let the VM reside on ZFS and use 
zfs send to backup my guest VM's.

I am not looking to replace HFS+ as the primary filesystem of the mac; although 
that would be cool, there's often a reliability benefit to staying on the 
supported, beaten path, standard configuration.  But if ZFS can be used to hold 
the guest VM storage reliably, I would benefit from that.


ZEVO's great as long as you don't mind managing everything from the command 
line.  I had to figure out how to identify the disks, as it manages them a 
little differently in MacOS.  I had some minor issues hosting iTunes/iPhoto 
libraries on ZFS volumes, with it being a little more sluggish & freezing up 
slightly.  Other than that it worked fine.  I'm back on HFS+ for iTunes/iPhoto 
now, but I'm hopeful it'll be resolved in a future release so I can switch back 

MacZFS will give zpool version 8 & zfs version 2, whereas ZEVO is zpool version 
28 &zfs version 5, so make your decision accordingly.  I have not tried MacZFS 
in a long time, so I couldn't say if it is better or worse than ZEVO.

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