diff --git a/nova/virt/libvirt/host.py b/nova/virt/libvirt/host.py
index 65ae0ff2f1..b75adf9269 100644
--- a/lib/python2.7/site-packages/nova/virt/libvirt/host.py
+++ b/lib/python2.7/site-packages/nova/virt/libvirt/host.py
@@ -503,21 +503,25 @@ class Host(object):
                 libvirt_version = conn.getLibVersion()
                 if op(libvirt_version,
                       versionutils.convert_version_to_int(lv_ver)):
+                    LOG.error("version check false because lv_ver too low")
                     return False
 
             if hv_ver is not None:
                 hypervisor_version = conn.getVersion()
                 if op(hypervisor_version,
                       versionutils.convert_version_to_int(hv_ver)):
+                    LOG.error("version check false because hv_ver too low")
                     return False
 
             if hv_type is not None:
                 hypervisor_type = conn.getType()
                 if hypervisor_type != hv_type:
+                    LOG.error("version check false because hv_type too low")
                     return False
 
             return True
-        except Exception:
+        except Exception as e:
+            LOG.exception("version check false because exception {}".format(e))
             return False
 
     def has_min_version(self, lv_ver=None, hv_ver=None, hv_type=None):