Proxmox VE 4.x 中文初階學習手冊
https://pve.proxmox.com/wiki/Storage:_ZFS
If you are experimenting with an installation of Proxmox inside a VM (Nested_Virtualization), don't use Virtio for disks of that VM, since are not supported by ZFS, use IDE or SCSI (it's ok also with Virtio type contorller) instead.
在虛擬機器裡安裝 Proxmox VE 做測試時，虛擬機的硬碟型態請勿選用 Virtio ，而應以 IDE 或 SCSI 代替