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