User`s guide

Chapter IX. FCoE Full Offload Initiator
Chelsio T5/T4 Unified Wire For Linux Page 163
Alternatively, the LUNs discovered by the Chelsio FCoE initiators can be accessed via easily-
identifiable ‘udev’ path device files like:
[root@host]# ls /dev/disk/by-path/pci-0000:04:00.0-csio-fcoe
<local_wwpn>:<remote_wwpn>:<lun_wwn>