Add nfs check

legacy/update

@@ -60,8 +60,20 @@ check_for_valid_backup_location() {
     fi
 }
 
+check_nfs_mount() {
+    if ! findmnt -rno SOURCE,TARGET,FSTYPE $1 | grep -q nfs; then
+        echo -e "${IRED}$1 is not an active NFS mount.${NO_COLOR}"
+        read -p "Do you want to continue without an active NFS mount? [y/N] " input
+        case $input in
+            [Yy]) return 0 ;;
+            [Nn]|*) exit 1 ;;
+        esac
+    fi
+}
+
 if [ $BACKUP_LOCATION ]; then
     check_for_valid_backup_location "$BACKUP_LOCATION"
+    check_nfs_mount "$BACKUP_LOCATION"
 else
     echo -e "${IRED}No BACKUP_LOCATION in $HOME/.config/update.conf specified${NO_COLOR}"
     exit 1