update scripts for backups

nixos/hosts/backups-rpi4/scripts/rsync-data-vol.sh

@@ -41,7 +41,7 @@ if [[ $count -ge 4 ]] ; then
 fi
 
 # Check if the Synology is mounted
-check=$(ssh root@nuc-server df -h | grep 100.64.0.2 | wc -l)
+check=$(ssh root@nuc-server df -h | grep \/volume1\/Storage | wc -l)
 if [[ $check != 1 ]] ; then  
   echo "Synology is not mounted on nuc-server:  check returned $check"
   payload="{\"message\": \"Backup stopped.  Synology isn't mounted\nDate: `date`\", \"priority\": 2,\"title\": \"backups-rpi4:  $BACKUP_NAME Backup Stopped\"}"