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[QunyingRan <ran.qunying@xxxxxxxxxx>]

Public bug reported:

There is no host filter in neutron to ensure resources available for
network when booting instance。 Now, when booting instance, nova will
select one host and send message to neutron agent, but the agent is
inactive actually. For bandwith, it's limited in physical interfaces, if
instance ports which had bandwidth-limited-rule and  needed bandwidth
resource more than that physical interfaces have, the qos policy will be
invalid. So if we need to add a host filter in neutron, when creating a
instance nova send a message to neutron to get available hosts for
network resource and then boot instance.

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1603833

Title:
  If we need a host filter in neutron ?

Status in neutron:
  New

Bug description:
  There is no host filter in neutron to ensure resources available for
  network when booting instance。 Now, when booting instance, nova will
  select one host and send message to neutron agent, but the agent is
  inactive actually. For bandwith, it's limited in physical interfaces,
  if instance ports which had bandwidth-limited-rule and  needed
  bandwidth resource more than that physical interfaces have, the qos
  policy will be invalid. So if we need to add a host filter in neutron,
  when creating a instance nova send a message to neutron to get
  available hosts for network resource and then boot instance.

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