Unmount zpool and spin down HDDs

raid-sleep.sh

#!/bin/bash

# unmount zpool and issue sleep command to HDDs

if [[ $EUID > 0 ]]; then
    echo "ERROR: Please run as root"
    exit 1
fi

if ! [ -x "$(command -v hdparm)" ]; then
  echo "ERROR: hdparm is not installed"
  exit 1
fi

if ! [ -x "$(command -v chronic)" ]; then
  echo "ERROR: chronic is not installed"
  exit 1
fi

echo "Unmount WS-DB"
chronic zfs umount ws-db

echo -e "\nSpin down HDD-0"
chronic hdparm -y /dev/disk/by-vdev/RAID_A0

echo -e "\nSpin down HDD-1"
chronic hdparm -y /dev/disk/by-vdev/RAID_A1

echo -e "\nSpin down HDD-2"
chronic hdparm -y /dev/disk/by-vdev/RAID_A2

echo -e "\nSpin down HDD-3"
chronic hdparm -y /dev/disk/by-vdev/RAID_A3

echo -e "\nSpin down HDD-4"
chronic hdparm -y /dev/disk/by-vdev/RAID_B0

echo -e "\nSpin down HDD-5"
chronic hdparm -y /dev/disk/by-vdev/RAID_B1

echo -e "\nSpin down HDD-6"
chronic hdparm -y /dev/disk/by-vdev/RAID_B2

echo -e "\nSpin down HDD-7"
chronic hdparm -y /dev/disk/by-vdev/RAID_B3

echo -e "\nDone"