diff --git a/jarvis_util/util/hostfile.py b/jarvis_util/util/hostfile.py
index 5d015de..a91b6c2 100644
--- a/jarvis_util/util/hostfile.py
+++ b/jarvis_util/util/hostfile.py
@@ -172,6 +172,9 @@ def subset(self, count):
         sub.hosts_ip = self.hosts_ip[:count]
         return sub
 
+    def copy(self):
+        return self.subset(len(self))
+
     def is_subset(self):
         return len(self.hosts) != len(self.all_hosts)