Update script for better error handling

nixos/hosts/backups-rpi4/backup-script.nix

@@ -9,9 +9,28 @@ GOTIFY_TOKEN=`cat /var/run/secrets/gotify_token | head -n 1`
 payload="{\"message\": \"Backup has started\nDate: `date`\", \"priority\": 2,\"title\": \"backups-rpi4:  Backup Started\"}"
 curl -X "POST" "https://gotify.sysctl.io/message" -H "accept: application/json" -H "Content-Type: application/json" -H "X-Gotify-Key:  $GOTIFY_TOKEN" -d "$payload"
 
-drive1=`lsblk -o NAME,SERIAL | grep -v crypt | grep 9RGHYP8C | awk {'print $1'}`
+drive1=`lsblk -o NAME,SERIAL | grep -v luks | grep 9RGHYP8C | awk {'print $1'}`
-drive2=`lsblk -o NAME,SERIAL | grep -v crypt | grep 9RGXW93C | awk {'print $1'}`
+drive2=`lsblk -o NAME,SERIAL | grep -v luks | grep 9RGXW93C | awk {'print $1'}`
-drive3=`lsblk -o NAME,SERIAL | grep -v crypt | grep 5QH05G3F | awk {'print $1'}`
+drive3=`lsblk -o NAME,SERIAL | grep -v luks | grep 5QH05G3F | awk {'print $1'}`
+
+mount1=`mount -l | grep $drive1`
+mounted1=`echo $?`
+mount2=`mount -l | grep $drive2`
+mounted2=`echo $?`
+mount3=`mount -l | grep $drive3`
+mounted3=`echo $?`
+
+echo "status"
+echo "$drive1 / $mount1 / $mounted1"
+echo "$drive2 / $mount2 / $mounted2"
+echo "$drive3 / $mount3 / $mounted3"
+
+# If any drive isn't found, exit:
+if [[ $mounted1 != 0 ]] && [[ munted2 != 0 ]] && [[ $mounted3 != 0 ]] ; then
+  payload="{\"message\": \"Backup stopped.  One or more local drives are not mounted.\nDate: `date`\", \"priority\": 2,\"title\": \"backups-rpi4:  Backup Stopped\"}"
+  curl -X "POST" "https://gotify.sysctl.io/message" -H "accept: application/json" -H "Content-Type: application/json" -H "X-Gotify-Key:  $GOTIFY_TOKEN" -d "$payload"
+
+fi
 
 echo "Drive 1:  $drive1"
 echo "Drive 2:  $drive2"