diff --git a/ceilometer/hardware/plugin.py b/ceilometer/hardware/plugin.py
index 3e6e5ecec..11aaa483c 100644
--- a/ceilometer/hardware/plugin.py
+++ b/ceilometer/hardware/plugin.py
@@ -21,7 +21,7 @@
 """Base class for plugins used by the hardware agent."""
 
 import abc
-
+import itertools
 import six
 
 from ceilometer.central import plugin
@@ -52,6 +52,7 @@ class HardwarePollster(plugin.CentralPollster):
         :param resources: end point to poll data from
         """
         h_cache = cache.setdefault(self.CACHE_KEY, {})
+        sample_iters = []
         for res in resources:
             parsed_url = network_utils.urlsplit(res)
             inspector = self._get_inspector(parsed_url)
@@ -64,16 +65,15 @@ class HardwarePollster(plugin.CentralPollster):
                     i_cache[res] = list(func(parsed_url))
                 # Generate samples
                 if i_cache[res]:
-                    return self.generate_samples(parsed_url, i_cache[res])
+                    sample_iters.append(self.generate_samples(parsed_url,
+                                                              i_cache[res]))
             except Exception as err:
                 LOG.exception(_('inspector call %(func)r failed for '
                                 'host %(host)s: %(err)s'),
                               dict(func=func,
                                    host=parsed_url.hostname,
                                    err=err))
-        # if no resources, we still need to return an iterable
-        # because of the interface requirement
-        return ()
+        return itertools.chain(*sample_iters)
 
     def generate_samples(self, host_url, data):
         """Generate an iterable Sample from the data returned by inspector
diff --git a/ceilometer/tests/hardware/pollsters/base.py b/ceilometer/tests/hardware/pollsters/base.py
index 363bc733b..99fab0305 100644
--- a/ceilometer/tests/hardware/pollsters/base.py
+++ b/ceilometer/tests/hardware/pollsters/base.py
@@ -58,7 +58,7 @@ class TestPollsterBase(test_base.BaseTestCase):
 
     def setUp(self):
         super(TestPollsterBase, self).setUp()
-        self.host = ["test://test"]
+        self.hosts = ["test://test", "test://test2"]
         self.useFixture(fixtures.MonkeyPatch(
             'ceilometer.hardware.inspector.get_inspector',
             self.faux_get_inspector))
@@ -69,10 +69,11 @@ class TestPollsterBase(test_base.BaseTestCase):
         mgr = manager.AgentManager()
         pollster = factory()
         cache = {}
-        samples = list(pollster.get_samples(mgr, cache, self.host))
+        samples = list(pollster.get_samples(mgr, cache, self.hosts))
         self.assertTrue(samples)
         self.assertIn(pollster.CACHE_KEY, cache)
-        self.assertIn(self.host[0], cache[pollster.CACHE_KEY])
+        for host in self.hosts:
+            self.assertIn(host, cache[pollster.CACHE_KEY])
 
         self.assertEqual(set([name]),
                          set([s.name for s in samples]))