Hello,
I've recently set up a ZFS pool on the SSD of my 2014 Macbook Pro. My disk contains two slices (HFS+ and ZFS), both encrypted with FileVault2. Right now, I am interested to learn more about ZFS, this is my first experience with it. The thing that brought me to it is the lack of sparse file support on HFS+, but so far I really like the design of ZFS (pools, snapshots, datasets etc.) and working with ZFS on my notebook.
I was wondering one thing, though. Does ZFS support TRIM on an SSD drive? I'm not sure that in my particular configuration - using FileVault - it's even the responsibility of ZFS to implement TRIM, or this is done at the CoreStorage layer.
In any case, many thanks to the developers and contributors of this project for bringing this technology to OS X.
Cheers,
Radu