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#!/bin/bash # # fc_wwpn_id # # Generates device node names links based on FC WWPN # Copyright (c) 2016 Hannes Reinecke, SUSE Linux GmbH # # This program is free software; you can redistribute it and/or modify it # under the terms of the GNU General Public License as published by the # Free Software Foundation version 2 of the License. # DEVPATH=$1 SCSIPATH=$(cd -P "/sys$DEVPATH/device" \|\| exit; echo "$PWD") d=$SCSIPATH [ -d "$d/scsi_disk" ] \|\| exit 0 target_lun=${d##:} while [ -n "$d" ] ; do d=${d%/} e=${d##/} case "$e" in rport) rport=$e rport_dir="/sys/class/fc_remote_ports/$rport" if [ -d "$rport_dir" ] ; then rport_wwpn=$(cat "$rport_dir/port_name") fi ;; host*) host=$e host_dir="/sys/class/fc_host/$host" if [ -d "$host_dir" ] ; then host_wwpn=$(cat "$host_dir/port_name") break; fi esac done if [ -n "$rport_wwpn" ] \|\| [ -n "$host_wwpn" ] ; then echo "FC_TARGET_LUN=$target_lun" fi if [ -n "$rport_wwpn" ] ; then echo "FC_TARGET_WWPN=$rport_wwpn" fi if [ -n "$host_wwpn" ] ; then echo "FC_INITIATOR_WWPN=$host_wwpn" fi