Displaying WWPN information on POWER9 SystemsStarting with POWER9 System Firmware 930 (VH930_FW930.00 (35)) and above, the ioinfo command (in Open Firmware) has been disabled. This command has been used by AIX/Power Systems administrators for years to discover the WWPNs of their new Fibre Channel adapters.
If you attempt to use ioinfo on a system on 930 fimrware, you will see the following message.
0 > ioinfo
This function has been deprecated in preference of the SMS main menu I/O Device Information set of utility functions.
It suggests using the SMS, I/O Device Information option to find the WWPN device info. Here's a link to the documentation.
http
However, if the SAN port is disabled or not connected, then this function does not provide any useful (WWPN) information. Instead you see the following message.
Link down Cannot Init Link.
.--- | No SAN devices present | | Press any key to continue | `---
So, as an alternative, you can try the following procedure instead.
1) Boot into SMS - I/O Device Information. Obtain a list of the adapters and their location codes.
e.g.
PowerPC Firmware Version FW930.00 (VH930_035) SMS (c) Copyright IBM Corp. 2000,2019 All rights reserved. ---- Select Media Adapter 1. U78D 2. U78D 3. U78D 4. U78D 5. U78D 6. U78D 7. U78D 8. U78D
2) Boot into open firmware prompt (8), use the disp
dev /packages/gui disp
e.g.
0 > dev /packages/gui ok 0 > disp
Link down Cannot Init Link. PORT-WWN: 100000107b6dd43e
And of course, this is an undocumented feature and not officially supported. And I have no idea if this feature will also disappear from Open Firmware at some point in the future. |
Actually
it seems that somebody destroyed also functionality of WWPN info
collection from HMC, no matter if it is in discovery mode or not:
hscroot@localhost:~> lshwres -r io --rsubtype slotchildren -m
9009-41A-SNXXXXXXX -F
phys_loc,description,mac_address,wwpn,microcode_version
No results were found.
I
found this state extremely annoying and do not really understand reason
for such change. From my point of view it is really step back.
An
alternative for collecting wwpn on physical FC cards is to issue the
machine Power-on with hardware discovery mode on the HMC. As Power-on
is probably not a frequent task, best practice is to that at least once
for each new machine installed. When completed you can query the HMC
for FC adapters wwwpn and Ethernet MAC address data.