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# Script to blink the LED on a SAS disk.
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# By default it blinks the LED for 30 seconds, thereafter leaving
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# the LED in the state it was prior to this command being called.
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# The blink is one second on, one second off, etc.
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# Uses sdparm rather than sg3_utils as the former is simpler to
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# use for setting mode page value.
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# Douglas Gilbert 20070317
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echo "Usage: sas_disk_blink [-h] [-s <n>] <sas_device>"
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echo " -h, --help print usage message"
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echo " -s <n>, --set <n> where <n> is:"
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echo " 0 - set RLM to 0"
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echo " 1 - set RLM to 1"
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echo " >1 - blink LED for <n> seconds"
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echo " (default: blink for 30 seconds)"
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echo "Use Ready LED Meaning (RLM) mode page field to blink SAS device LED"
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while test ! -z "$opt" -a -z "${opt##-*}"; do
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h|-help) usage ; exit 0 ;;
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s|-set) shift ; let seconds=$1 ;;
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*) echo "Unknown option: -$opt " ; exit 1 ;;
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if ( which sdparm >/dev/null 2>&1 ) ; then
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echo "sdparm not found"
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sdparm -t sas -c RLM $1
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elif [ $seconds = "1" ]
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sdparm -t sas -s RLM $1
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elif [ $seconds -gt 1 ]
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outt=$(sdparm -t sas -g RLM -H $1)
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if [ ${outt:0:4} = "0x00" ]
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echo "start blinking for $seconds seconds"
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for (( times = 1; times < $seconds; times=$times+2 )); do
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sdparm -q -t sas -s RLM $1
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sdparm -q -t sas -c RLM $1
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sdparm -q -t sas -c RLM $1
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sdparm -q -t sas -s RLM $1
added
removed
scripts/sas_disk_blink
