diff --git a/bundles/backup-server/metadata.py b/bundles/backup-server/metadata.py
index 3053070..b26bcff 100644
--- a/bundles/backup-server/metadata.py
+++ b/bundles/backup-server/metadata.py
@@ -31,9 +31,10 @@ def zfs(metadata):
                         if path == config.get('mountpoint'):
                             datasets[f"tank/{other_node.metadata.get('id')}/{dataset}"] = {
                                 'mountpoint': 'none',
+                                'readonly': 'on',
                                 'backup': False,
                             }
-
+                            continue
 
     return {
         'zfs': {
diff --git a/items/zfs_dataset.py b/items/zfs_dataset.py
index de4632c..730dc18 100644
--- a/items/zfs_dataset.py
+++ b/items/zfs_dataset.py
@@ -78,6 +78,7 @@ class ZFSDataset(Item):
         'recordsize': None,
         'dedup': None,
         'logbias': None,
+        'readonly': None,
     }
     ITEM_TYPE_NAME = "zfs_dataset"