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https://codeberg.org/privacy1st/nix-git
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45 lines
1.0 KiB
Bash
45 lines
1.0 KiB
Bash
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#!/usr/bin/env bash
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#
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# Watch disk power state (HDD spin-up and spin-down events).
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#
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# Arguments.
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disk='/dev/disk/by-id/ata-WDC_WD40EFRX-68N32N0_WD-WCC7K0CPF0N1'
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# Assert that this script is run as root.
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if [ "$(id -u)" -ne 0 ]; then
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printf '%s\n' 'Error: This script has to be run as root user.' 1>&2
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exit 1
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fi
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trap ctrl_c INT
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function ctrl_c() {
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echo "End: $(date +"%Y-%m-%dT%H:%M:%S%z")"
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exit 0
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}
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function notify-spin-down(){
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while hdparm -C "${disk}" | grep 'active/idle' >/dev/null; do
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sleep 15s
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done
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echo "$(date +"%Y-%m-%dT%H:%M:%S%z"): ${disk} has spun down"
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}
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function notify-spin-up(){
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while hdparm -C "${disk}" | grep 'standby' >/dev/null; do
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sleep 15s
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done
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echo "$(date +"%Y-%m-%dT%H:%M:%S%z"): ${disk} has spun up"
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}
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function main(){
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echo "Start: $(date +"%Y-%m-%dT%H:%M:%S%z")"
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hdparm -C "${disk}" | grep 'active/idle' >/dev/null && notify-spin-down
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hdparm -C "${disk}" | grep 'standby' >/dev/null && {
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while :; do
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notify-spin-up
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notify-spin-down
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done
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}
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echo "${disk} has unknown state"
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}
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main
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