When trying to access my recordings on my NAS, kodi seems to stop working for a short while when the NAS realizes that it is being accessed and starts spinning up the discs. I figured that it would be nice for the NAS to spin up earlier, if the screen saver of a „connected KODI“ is deactivated.

After enabling the JSON-RPC-TCP 9090-Port on Kodi (In System/Settings/Network/Services activate „Allow programs on this system to control Kodi for localhost access only“ and „Allow programs on other systems to control Kodi for access from other computers as well“), this script should be run at boottime on the NAS. Make sure to replace the accessed discs with your /dev/sdX-entries on your system. Also replace HOSTNAME with the host which as Kodi running, if the discs are in use on the same host, replace it with „localhost“.

The command must be run as root.

onidlespinupdiscs.sh:

#!/bin/bash
# Must be run as root
while true
do
  netcat -d HOSTNAME 9090 | (
    cnt=0
    line=
    while read -N 1 c; do
      line="$line$c"
      if [ "$c" = "{" ]; then
        cnt=$((cnt+1))
      elif [ "$c" = "}" ]; then
        cnt=$((cnt-1))
        if [ $cnt -eq 0 ]; then
          printf "%s\n" "$line"
          line=
        fi
      fi
    done
  ) | while read line
  do
    match=$(echo ${line} | grep -c "GUI.OnScreensaverDeactivated")
    if [ $match -eq 1 ]; then
      dd if=/dev/sdb bs=4096 count=1 of=/dev/null iflag=direct >/dev/null 2>&1 &
      dd if=/dev/sdc bs=4096 count=1 of=/dev/null iflag=direct >/dev/null 2>&1 &
    fi
  done
  sleep 60
done