====== FC ======

===== Determine FC ID (WWN) =====

==== RHEL 4.x or earlier ====

To find the WWN run the cat /proc/scsi/adapter_type/n command, where adapter_type is the host adapter type, and n is the host adapter number for your card. In most cases, the adapter type is qla2xxx.

  cat /proc/scsi/adapter_type/<n>

==== RHEL 5.x or later ====

The adapter WWN information can be found:

  cat /sys/class/fc_host/host<n>/port_name
  
  cat /sys/class/fc_host/host5/port_name
  0x5001438002a30302


===== Determine if FC link is online =====

==== RHEL 5.x or later ====

  cat /sys/class/fc_host/host*/port_state

  
===== Find HBA brand =====

==== Method 1 ====

  lspci | grep -i fibre
  08:00.0 Fibre Channel: QLogic Corp. ISP2532-based 8Gb Fibre Channel to PCI Express HBA (rev 02)
  08:00.1 Fibre Channel: QLogic Corp. ISP2532-based 8Gb Fibre Channel to PCI Express HBA (rev 02)
  
==== Method 2 ====
    
  cat /sys/class/scsi_host/host<n>/model_name
  QMH2462


===== HBA firmware =====

  cat /sys/class/scsi_host/host<n>/fw_version

  cat /sys/class/scsi_host/host[4-5]/fw_version
  5.06.02 (90d5)
  5.06.02 (90d5)

Alternatively:
  dmesg | grep fw
 
  Exaample output:
  qla2xxx 0000:08:00.0: firmware: requesting ql2500_fw.bin
  ISP2532: PCIe (2.5GT/s x8) @ 0000:08:00.0 hdma+, host#=4, fw=5.06.02 (90d5)
  ISP2532: PCIe (2.5GT/s x8) @ 0000:08:00.1 hdma+, host#=5, fw=5.06.02 (90d5)