I am trying to configure FreeNas 8 to expose an RAID-Z or RAID-Z2 volume via iSCSI. I have had limited success. If I delete the RAID-Z volume and simply expose a "physical" disk in the iSCSI setup then everything works no problem. I have 4 * 2TB disks that I wanted to add to the RAID-Z volume.
With the amount of success I'm starting to think that maybe it's not possible to do this (or least not possible from the web GUI). Has anyone else done this before? Is it possible? Is there a trick I haven't discovered?