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