参考：wiki
VM Templates and Clones ：https://pve.proxmox.com/wiki/VM_Templates_and_Clones#Linked_Clone
其中提到：
Linked Clones works for theses storages: files in raw, qcow2, vmdk format (either on local storage or nfs); LVM-thin, ZFS, rbd, sheepdog, nexenta.
It's not supported with LVM & ISCSI storage.
案例：
https://forum.proxmox.com/threads/full-clone-feature-is-not-supported-for-drive-efidisk0-500.71511/ **Full clone feature is not supported for drive 'efidisk0' (500)?
https://foxi.buduanwang.vip/virtualization/pve/525.html/ pve链接克隆报错Linked clone **feature is not supported for drive 'scsi0' 解决办法