Handle non-updatable storages (offline, stopped...)

cloudcontrol/node/hypervisor/lib.py

@@ -437,18 +437,21 @@ class Storage(object):
         return True if self.type in Storage.SHARED_TYPES else False
 
     def update(self):
-        self.lv_storage.refresh()
-        self.update_attr()
-
-        # update volumes
-        for vol_name in self.lv_storage.listVolumes():
-            if vol_name in self.volumes:
-                # update volume
-                self.volumes[vol_name].update()
-            else:
-                # add volume
-                v = Volume(self, self.lv_storage.storageVolLookupByName(vol_name))
-                self.volumes[v.name] = v
+        try:
+            self.lv_storage.refresh()
+            self.update_attr()
+
+            # update volumes
+            for vol_name in self.lv_storage.listVolumes():
+                if vol_name in self.volumes:
+                    # update volume
+                    self.volumes[vol_name].update()
+                else:
+                    # add volume
+                    v = Volume(self, self.lv_storage.storageVolLookupByName(vol_name))
+                    self.volumes[v.name] = v
+        except libvirt.libvirtError as err:
+            logger.warning('Unable to update storage %s: %s', self.name, err)
 
     def update_attr(self):
         self.state, self.capacity, self.allocation, self.available = self.lv_storage.info()