dashboard: add reset_node option to VmStateChangeForm

circle/dashboard/forms.py

@@ -752,6 +752,7 @@ class VmStateChangeForm(forms.Form):
                     "but don't interrupt any tasks."))
     new_state = forms.ChoiceField(Instance.STATUS, label=_(
         "New status"))
+    reset_node = forms.BooleanField(required=False, label=_("Reset node"))
 
     def __init__(self, *args, **kwargs):
         show_interrupt = kwargs.pop('show_interrupt')

circle/vm/operations.py

@@ -811,7 +811,8 @@ class ChangeStateOperation(InstanceOperation):
     required_perms = ('vm.emergency_change_state', )
     concurrency_check = False
 
-    def _operation(self, user, activity, new_state="NOSTATE", interrupt=False):
+    def _operation(self, user, activity, new_state="NOSTATE", interrupt=False,
+                   reset_node=False):
         activity.resultant_state = new_state
         if interrupt:
             msg_txt = ugettext_noop("Activity is forcibly interrupted.")
@@ -821,6 +822,10 @@ class ChangeStateOperation(InstanceOperation):
                 i.finish(False, result=message)
                 logger.error('Forced finishing activity %s', i)
 
+        if reset_node:
+            self.instance.node = None
+            self.instance.save()
+
 
 class NodeOperation(Operation):
     async_operation = abortable_async_node_operation