When using FreeNAS 11, I have created several snapshots manually and share via ISCSI to VMs for readonly storage disk. But when trying update to TrueNAS 12 rellease, the exist share can not work. instead I have tested share thr original vdev or the snapshot-clone can work. By the way ,when trying to create a new iscsi targe after select a snapshot click save, it will prompt can not find the specific vdev. Sorry I have returned to 11.3 U5, If you need any further information I can help to re-update to 12 to get some screenshot or error log. Thanks.