I have followed these steps for setting up zfs (maczfs, 10.8.3) with encryption. Everything works fine, till I restart the computer.

When I restarted my mac, diskutil informed me that the file system is incorrect and refuse to mount my ZFS pool disc:

 **Mount failed**    
 The disk “Workspace” could not be mounted. 
 Try running First Aid on the  disk and then retry mounting.

When I run the Verify Disc, I get an error:

...
The volume <UUID OF MY ZFS LOGICAL VOLUME> appears to be OK.
Checking file systemChecking Journaled HFS Plus volume.
Invalid B-tree node size
The volume   could not be verified completely.
Error: This disk needs to be repaired. Click Repair Disk.

The cause of the error is that the Logical Volume is ZFS.

How can I mount my ZFS partition? I wonder whether it is not an issue with maczfs or the way I created my pool (zpool create /dev/disk2).