Slow down mdadm raid resync/reshape when a user is connected to Jellyfin

jellyfin_smart_slowdown_mdadm_resync.sh

#!/bin/bash
# Require  jq :
#   sudo apt install -y jq
# Setup:
#   chmod  +x PATHTOSCRIPT/script.sh
# CRON example:
#  * * * * * PATHTOSCRIPT/script.sh

#Server uri without trailing slash
server_uri='http://JELLYFINSERVER'

# Jellyfin APIKEY
apikey='xxxxxxxxxxx'

i=0
while [ $i -lt 4 ]
do
  json_data=$(curl -s  -X 'GET' "${server_uri}/Sessions?activeWithinSeconds=960&api_key=${apikey}"   -H 'accept: application/json')
  nb_sessions=$(echo ${json_data} |jq '. | length')

  if [ "$nb_sessions" == "0" ]
  then
    # aucune session en cours
    for file in /proc/sys/dev/raid/*speed*_max  /sys/block/md*/md/*speed*_max 
    do
      grep 200000 ${file} > /dev/null 2>&1 || echo 200000 > ${file}
    done
    for file in /proc/sys/dev/raid/*speed*_min  /sys/block/md*/md/*speed*_min
    do
      grep 50000  ${file} > /dev/null 2>&1 || echo 50000 > ${file}
    done

  else
    for file in  /proc/sys/dev/raid/*speed*_max  /sys/block/md*/md/*speed*_max
    do
      grep 3000 ${file} > /dev/null 2>&1 || echo 3000 > ${file}
    done
    for file in  /proc/sys/dev/raid/*speed*_min  /sys/block/md*/md/*speed*_min
    do
      grep 1000  ${file} > /dev/null 2>&1 || echo 1000 > ${file}
    done
  fi
  i=$((i+1))
  sleep 14
done