How to Find Qlogic Fiber Channel HBA WWN's (World Wide Number)
9:57 PMFind the instance of the card's name in the /proc filesystem
If you see '/proc/scsi/qla2xxx' in the output you have a Qlogic FC HBA.$ sudo find /proc -type d -name qla2xxx /proc/scsi/qla2xxx
Change into the qla2xxx directory
$ cd /proc/scsi/qla2xxx
To find the WWN for each of the two "ports," check the egrep results for the files that came back with the word "adapter-port" in them.
$ grep -l "target-" *|xargs egrep -i 'QLogic|scsi' /dev/null 0:QLogic PCI to Fibre Channel Host Adapter for QLE2462: 0:Number of reqs in pending_q= 0, retry_q= 0, done_q= 0, scsi_retry_q= 0 0:SCSI Device Information: 0:scsi-qla0-adapter-node=2000001b32827b23; 0:scsi-qla0-adapter-port=2100001b32827b23; 0:scsi-qla0-target-0=5006016a39a04197; 0:scsi-qla0-port-0=50060160b9a04197:5006016a39a04197:3400ef:81; 0:SCSI LUN Information: 1:QLogic PCI to Fibre Channel Host Adapter for QLE2462: 1:Number of reqs in pending_q= 0, retry_q= 0, done_q= 0, scsi_retry_q= 0 1:SCSI Device Information: 1:scsi-qla1-adapter-node=2001001b32a27b23; 1:scsi-qla1-adapter-port=2101001b32a27b23; 1:scsi-qla1-target-0=5006016239a04197; 1:scsi-qla1-port-0=50060160b9a04197:5006016239a04197:0103ef:81; 1:SCSI LUN Information:
Alternate Methods
This has been tested on RHEL 5.$ cat /sys/class/scsi_host/host*/device/fc_host\:host*/port_name 0x500143800200b5c4 0x500143800200b5c6
$ /usr/bin/systool -c fc_host -v | grep port_name
port_name = "0x500110a0001798dc"
port_name = "0x500110a0001798de"
$ cat /sys/class/fc_host/host[0-9]*/port_name
port_name = "0x500110a0001798dc"
port_name = "0x500110a0001798de"
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