yahoo-eng-team team mailing list archive

[Bogdan Dobrelya <1715374@xxxxxxxxxxxxxxxxxx>]

** Also affects: tripleo
   Importance: Undecided
       Status: New

** Changed in: tripleo
       Status: New => In Progress

** Changed in: tripleo
   Importance: Undecided => Critical

** Changed in: tripleo
    Milestone: None => stein-1

** Changed in: tripleo
     Assignee: (unassigned) => Bogdan Dobrelya (bogdando)

-- 
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to OpenStack Compute (nova).
https://bugs.launchpad.net/bugs/1715374

Title:
  Reloading compute with SIGHUP prenvents instances to boot

Status in OpenStack Compute (nova):
  Confirmed
Status in tripleo:
  In Progress

Bug description:
  When trying to boot a new instance at a compute-node, where nova-
  compute received SIGHUP(the SIGHUP is used as a trigger for reloading
  mutable options), it always failed.

    ========== nova/compute/manager.py ==============
      def cancel_all_events(self):
          if self._events is None:
              LOG.debug('Unexpected attempt to cancel events during shutdown.')
              return
          our_events = self._events
          # NOTE(danms): Block new events
          self._events = None                    <--- Set self._events to "None" 
      ...
      =================================================

    This will cause a NovaException when prepare_for_instance_event() was called.
    It's the cause of the failure of network allocation.

      ========== nova/compute/manager.py ==============
      def prepare_for_instance_event(self, instance, event_name):
          ...
          if self._events is None:
              # NOTE(danms): We really should have a more specific error
              # here, but this is what we use for our default error case
              raise exception.NovaException('In shutdown, no new events '
                                            'can be scheduled')
      =================================================

To manage notifications about this bug go to:
https://bugs.launchpad.net/nova/+bug/1715374/+subscriptions