Locating The Wwpn For A Linux Host - IBM TotalStorage DS6000 Attachment Manual

Locating the WWPN for a Linux host

This topic provides instructions to locate the worldwide port name (WWPN) for an
Intel server running either the Red Hat or SUSE version of the Linux operating
system with a QLogic adapter.
1. To locate the WWPN without restarting the host system You can find the WWPN
2. To locate the WWPN with restarting the host system
When you configure storage on the storage unit for fibre-channel attachment, you
must specify the worldwide name (WWN) of the fibre-channel adapter in the IBM
TotalStorage DS Storage Manager.
On Linux systems, the required WWN displays in the /var/log/messages system log
file when you load the driver. This location, however, depends on the system
configuration. You can perform this task automatically during startup, or you can
manually perform the task to load the module using the insmod or modprobe
command.
Figure 88 on page 215 shows an example of what is displayed when you type more
/var/log/messages.
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DS6000 Host Systems Attachment Guide
Note: The lscfg -vl fcsx ROS level identifies the fibre-channel adapter firmware
level.
To display all adapters in the systems with the associated WWPN when using
SDD, enter the following SDD command: datapath query wwpn.
in your /proc/scsi/qlaadapter_type/n directory, where adapter_type is the host
adapter type and n is the host adapter number for your card. Your host adapter
type can be either qlaxxxx for QLogic adapters or lpfc for Emulex adapters.
a. Restart the server.
b. Press Alt+Q to get the FAST!Util menu.
Note: If you have more than one fibre-channel adapter installed, all the
fibre-channel adapters display. Scroll down to the adapter you want.
Press Enter.
c. From the FAST!Util menu, scroll down and select Select Host Adapter.
d. Scroll up and highlight Configuration Settings. Press Enter.
e. From the Configuration Settings menu, click Host Adapter Settings.
f. Write down the 16-digit alphanumeric string that is displayed on your screen.