Fc Troubleshooting

The Book of Knowledge

FC_Troubleshooting.md

Fibre Channel Troubleshooting

Check the existence and status of the fibre cards: lspci | grep -i qlogic

Three Ways to Check the status of the fibre cards


systool -c scsi_host -v |egrep -i 'fw_state|link'
/opt/hp/hp_fibreutils/adapter_info
egrep -i "link|run" /sys/class/scsi_host/host?/state

Check the existence of the LUN devices


/usr/sbin/inq -btl -no_dots


lsscsi -g #    (Optional by installing the lsscsi rpm package)

To identify and to locate the WWPN numbers of the installed fibre cards


for n in `ls -lrt /sys/class/fc_host/host[0-9]*/port_name|awk '{print $9}'|cut -d/ -f5`;
  do
    p=`cat /sys/class/fc_host/$n/port_name`; printf "$n - $p\n";
  done

Check if the SCLI (SANsurfer FC HBA CLI) package is installed in the o/s


yum list scli*

Check the status of the fibre cards


systool -c scsi_host -v |egrep -i 'fw_state|link'

Check the modprobe configuration for qla2xxx module


/etc/modprobe.conf or /etc/modprobe.d/qla2xxx.conf

should contain this line


install qla2xxx { /sbin/modprobe hpsa; } ; /sbin/modprobe --first-time --ignore-install qla2xxx options qla2xxx ql2xmaxqdepth=64 qlport_down_retry=64 ql2xloginretrycount=16 ql2xextended_error_logging=1