Another wrapper (like mdstat), that’ll look through my Western Digital disks and fix any disk not having the head parking timeout set to a configured value.

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#!/bin/bash

FIRMWARE_TIMEOUT_SH=138

if [ ! -x /usr/sbin/idle3ctl ] ; then
  echo "idle3-tools is missing."
  exit 1
fi

for disk in /dev/sd?; do
  # idle time should be set to: 138 (300s)
  # 138-128=10
  # 10x30=300 seconds
  FIRMWARE_TIMEOUT_IS="$( /usr/sbin/idle3ctl -g $disk  | awk '{ print $5 }' )"

  if [ "$FIRMWARE_TIMEOUT_IS" -ne "$FIRMWARE_TIMEOUT_SH" ]; then
    /usr/sbin/idle3ctl -s$FIRMWARE_TIMEOUT_SH $disk
  fi
done