This is a very early alpha of ZFS on OSX, to be the next generation of MacZFS. Test this with the expectation of a kernel panic.

** zfs.kext depends upon spl.kext, so start with that repository.

It is tested primarily on Mac OS 10.8.4 and secondarily on 10.6.8, with the latest Macports.

See https://github.com/zfs-osx/ and http://MacZFS.org/ for more information. Note MacZFS's wiki on kernel development and panic decoding.

# git clone https://github.com/zfs-osx/zfs.git

KNOWN ISSUES.

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

Please note that 'llvm-gcc' or 'clang' has to be used for compiling KEXTs. Pure 'gcc' will produce instable builds.

 # ./configure CC=clang CXX=clang++
or
 # ./configure CC=llvm-gcc CXX=llvm-g++

# ./autogen.sh
# ./configure CC=clang CXX=clang++ --with-spl=/path/to/your/spl
# make

# rsync -ar --delete module/zfs/zfs.kext/ /tmp/zfs.kext/
# chown -R root:wheel /tmp/zfs.kext

# kextload -r /tmp/ -v /tmp/zfs.kext/

Requesting load of /tmp/zfs.kext.
/tmp/zfs.kext loaded successfully (or already loaded).

: kobj_open_file: "/etc/zfs/zpool.cache", err 0 from vnode_open
: ZFS: Loaded module v0.6.0-rc12alpha, ZFS pool version 5000, ZFS filesystem version 5

bash-3.2# ls -l /dev/zfs
crw-rw-rw-  1 root  wheel   33,   0 Feb 27 17:20 /dev/zfs


# ./zpool.sh status
no pools available


# ./zpool.sh create BOOM /Users/lundman/osx.zfs/diskimage.bin
zfs_mount: unused options: "defaults,atime,dev,exec,rw,suid,xattr,nomand,zfsutil"

# df -h
Filesystem      Size   Used  Avail Capacity iused   ifree %iused  Mounted on
/dev/disk0s2    20Gi   11Gi  8.5Gi    57% 2921478 2237422   57%   /
BOOM           472Mi   21Ki  472Mi     1%       6  966468    0%   /BOOM

# ls -l /BOOM/
total 3
drwx------  2 root  wheel  3 Apr  4 16:44 .fseventsd

# mkdir /BOOM/THIS.DIRECTORY.IS.ON.ZFS

drwxr-xr-x  2 root  wheel  2 Apr  4 16:45 THIS.DIRECTORY.IS.ON.ZFS

# ./cmd.sh zfs umount BOOM

# ./zpool.sh export BOOM

# ./zpool.sh import -d /Users/lundman/osx.zfs/
   pool: BOOM
     id: 17559987915944145476
  state: ONLINE
 action: The pool can be imported using its name or numeric identifier.
 config:

        BOOM                             ONLINE
          /Users/lundman/pool-image.bin  ONLINE

# ./zpool.sh import -d /Users/lundman/osx.zfs/ BOOM

# ls -l /BOOM/
total 3
drwx------  2 root  wheel  3 Apr  4 16:44 .fseventsd
drwxr-xr-x  2 root  wheel  2 Apr  4 16:45 THIS.DIRECTORY.IS.ON.ZFS

# ./zpool.sh import -d ~/image/ FROMSOLARIS
NAME          SIZE  ALLOC   FREE    CAP  DEDUP  HEALTH  ALTROOT
FROMSOLARIS   123M   354K   123M     0%  1.00x  ONLINE  -

• lundman