OpenZFS on OS X (O3X) brings OpenZFS features to Apple's OS X.

** zfs.kext depends upon spl.kext, so start with that repository: https://github.com/openzfsonosx/spl.git

It is tested primarily on MacOs Mojave.

See http://openzfsonosx.org/ for more information.

Open Issues:

https://github.com/openzfsonosx/zfs/issues?state=open

Detailed compiling instructions can be found in the wiki:

https://openzfsonosx.org/wiki/Install

If you want to load it directly;

# ./load.sh

To use commands directly;

# ./cmd.sh zpool status

To load unsigned kexts you need to disable SIP for kexts. Or sign them with your own keys.

For messages use:

• Pre-Sierra:

  # tail -f /var/log/system.log

• Sierra and higher:

  # log stream --source --predicate 'senderImagePath CONTAINS "zfs" OR senderImagePath CONTAINS "spl"'

For example:

: ZFS: Loading module ...
: ZFS: ARC limit set to (arc_c_max): 1073741824
: ZFS: Loaded module v0.6.2-rc1_2_g691a603, ZFS pool version 5000, ZFS filesystem version 5
: ZFS filesystem version: 5
: ZFS: hostid set to 9e5e1b35 from UUID 'C039E802-1F44-5F62-B3A2-5E252F3EFF2A'

• OpenZFSonOsX team