List WWN of online FC in HPUX server

List of commands to check WWN of online FC in the HPUX server. The article also includes a small script that can do this task in seconds!

For FC connectivity to storage on the HPUX server, we must share the WWN of the online FC. Getting WWN is a three-step process :

Step 1:

Identify FC devices under ioscan output.

# ioscan -fnCfc
Class     I  H/W Path    Driver S/W State   H/W Type     Description
==================================================================
fc        0  2/0/10/1/0  fcd   CLAIMED     INTERFACE    HP AB379-60101 4Gb Dual Port PCI/PCI-X Fibre Channel Adapter (FC Port 1)
                        /dev/fcd0
fc        1  2/0/10/1/1  fcd   CLAIMED     INTERFACE    HP AB379-60101 4Gb Dual Port PCI/PCI-X Fibre Channel Adapter (FC Port 2)
                        /dev/fcd1
fc        2  2/0/12/1/0  fcd   CLAIMED     INTERFACE    HP AB379-60101 4Gb Dual Port PCI/PCI-X Fibre Channel Adapter (FC Port 1)
                        /dev/fcd2
fc        3  2/0/12/1/1  fcd   CLAIMED     INTERFACE    HP AB379-60101 4Gb Dual Port PCI/PCI-X Fibre Channel Adapter (FC Port 2)
                        /dev/fcd3

In above output, you can see /dev/fcd0 to 3 are FC devices.

Step 2:

Check which FCs are online i.e. have cable connectivity with fcmsutil output.

# fcmsutil /dev/fcd0

                           Vendor ID is = 0x1077
                           Device ID is = 0x2422
            PCI Sub-system Vendor ID is = 0x103C
                   PCI Sub-system ID is = 0x12D7
                               PCI Mode = PCI-X 133 MHz
                       ISP Code version = 5.4.0
                       ISP Chip version = 3
                               Topology = PTTOPT_FABRIC
                             Link Speed = 4Gb
                     Local N_Port_id is = 0x010300
                  Previous N_Port_id is = None
            N_Port Node World Wide Name = 0x50060b00006975ed
            N_Port Port World Wide Name = 0x50060b00006975ec
            Switch Port World Wide Name = 0x200300051e046c0f
            Switch Node World Wide Name = 0x100000051e046c0f
              N_Port Symbolic Port Name = server1_fcd0
              N_Port Symbolic Node Name = server1_HP-UX_B.11.31
                           Driver state = ONLINE
                       Hardware Path is = 2/0/10/1/0
                     Maximum Frame Size = 2048
         Driver-Firmware Dump Available = NO
         Driver-Firmware Dump Timestamp = N/A
                                   TYPE = PFC
                         NPIV Supported = YES
                         Driver Version = @(#) fcd B.11.31.1103 Dec  6 2010

Check the driver state in the above output (highlighted). If it’s ONLINE that means this FC has cable connectivity. If its Awaiting Link UP then it does not have cable connectivity.

Step 3:

If it’s online check its WWN by checking N_Port Port World Wide Name value! That’s it. So WWN of above FC is 0x50060b00006975ec.

I have compiled all the above steps in a single script that you can run and get the WWN of online FC in seconds.

First test script in test server. Run it on your own risk.

Sample output :

# sh test.sh

FC : /dev/fcd0
0x50060b00006975ec

FC : /dev/fcd2
0x50060b00006973c8