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#!/bin/sh
#
# sas_transport_lun_scan
#
# Selectively enable individual LUNs behind a SAS end device
#
# ACTION=="add", SUBSYSTEM=="sas_transport", ATTR{sas_address}=="sas_addr", \
# PROGRAM="sas_transport_lun_scan lun"
#
[ -z "$DEVPATH" ] && exit 1
if [ -n "$1" ]; then
LUN=$1
else
LUN=-
fi
ID=${DEVPATH##*/end_device-}
HOST=${ID%%:*}
CHANNEL=${ID%%-*}
CHANNEL=${CHANNEL#*:}
if [ -f /sys"$DEVPATH"/scsi_target_id ]; then
read -r TARGET < /sys"$DEVPATH"/scsi_target_id
fi
[ -z "$TARGET" ] && exit 1
echo "0 $TARGET $LUN" > /sys/class/scsi_host/host"$HOST"/scan
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