xe sr-probe type=nfs device-config:server=<device ip> device-config:serverpath=/path/to/export
xe sr-introduce uuid=<device uuid> shared=true type=nfs name-label=<name>
xe pbd-create sr-uuid=<uuid> host-uuid=<uuid> device-config:server=<device ip> device-config:serverpath=/path/to/export
xe pbd-plug uuid=<pbd uuid>
xe sr-scan uuid=<uuid>