How to get HBA WWPN on Linux is a common task for a storage engineer. We need the WWPN to configure zone on the switch side.We will look at this question today.
In our SAN environment, we have two HBAs installed on the Linux system. We can get the HBA WWN/WWPN using the following way without installing any package.
Fibre Channel is a high-speed networking technology used for connecting storage devices (such as disk arrays) to servers or other devices in a SAN.
WWNN stands for World Wide Node Name, and it is a unique identifier assigned to a Fibre Channel (FC) node in a storage area network (SAN). In a SAN environment, a node typically refers to a device that connects to the FC fabric
WWPN stands for World Wide Port Name, and it is a unique identifier assigned to a Fibre Channel (FC) port in a storage area network (SAN).
How to check HBA WWNN WWPN on Linux?
$ find /sys/class/fc_host/*/ -name ‘port_name’ << retrieve path to wwpn entry
/sys/class/fc_host/host0/port_name
/sys/class/fc_host/host5/port_name
$ find /sys/class/fc_host/*/ -name ‘node_name’ << retrieve path to wwnn entry
/sys/class/fc_host/host0/node_name
/sys/class/fc_host/host5/node_name
$ grep -v “zZzZ” -H /sys/class/fc_host/host*/*_name
/sys/class/fc_host/host0/fabric_name:0x200a000decdf9601
/sys/class/fc_host/host0/node_name:0x2000001b32923dc9
/sys/class/fc_host/host0/port_name:0x2100001b32923dc9 <
/sys/class/fc_host/host0/symbolic_name:QLE2462 FW:v8.07.00 DVR:v10.01.00.22.07.9-k
/sys/class/fc_host/host5/fabric_name:0x2014000decdf9581
/sys/class/fc_host/host5/node_name:0x2001001b32b23dc9
/sys/class/fc_host/host5/port_name:0x2101001b32b23dc9 << WWPN
/sys/class/fc_host/host5/symbolic_name:QLE2462 FW:v8.07.00 DVR:v10.01.00.22.07.9-k
$ find /sys/devices -type d -name ‘host*’ | egrep -v “host_busy|fc_host|scsi_host” | sort
/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/host7
/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/host7/sas_host/host7
/sys/devices/pci0000:00/0000:00:03.0/0000:03:00.0/host0
/sys/devices/pci0000:00/0000:00:03.0/0000:03:00.1/host5
/sys/devices/pci0000:00/0000:00:1a.7/usb1/1-4/1-4:1.0/host6
/sys/devices/pci0000:00/0000:00:1f.2/ata1/host1
/sys/devices/pci0000:00/0000:00:1f.2/ata2/host2
/sys/devices/pci0000:00/0000:00:1f.5/ata3/host3
/sys/devices/pci0000:00/0000:00:1f.5/ata4/host4
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