yahoo-eng-team team mailing list archive

[Armando Migliaccio <1556786@xxxxxxxxxxxxxxxxxx>]

There's a lot of work on the Nova side on how resources are managed,
tracked and allocated. I can't see how this can fit in, especially when
that effort is well undergoing.

** Changed in: neutron
       Status: New => Won't Fix

** Changed in: neutron
     Assignee: zhaobo (zhaobo6) => (unassigned)

** Changed in: neutron
   Importance: Undecided => Wishlist

-- 
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to neutron.
https://bugs.launchpad.net/bugs/1556786

Title:
  [RFE]Don't check port quota in nova-api

Status in neutron:
  Won't Fix

Bug description:
  When nova use neutron as network-api, it will check neutron port quota
  in nova-api if we boot a instance with parameter network-id.
  In large-scale, if a tenant already has a large number instances, booting
  a instance needs much time to get used port number and check port
  quota through neutron API, sometimes the REST api will timeout and fail
  to create instance.
  we can see the spec in Nova[1]

  from nova side:[2]
  Ideally Nova would create all required ports as part of
  network validation, but port creation requires some details
  from the hypervisor.  So we just check the quota and return
  how many of the requested number of instances can be created

  from neutron side:
  it does not provide reservation mechanism, if nova
  wants to check the rest of port number for this tenant, nova must use
  neutron quota-show to get port quota, and use port-list to get already
  created port numbers, and then get the rest number, in large-scale,
  port-list will consume much time. And it will return a very big body maybe
  contain thousands port info. 

  
  For this issue, we propose to add a left resource-count  API based on quota, if it done, we could remove port-quota check in nova. We could propose 2 ways:
  1. query resource_count specified tenant_id and resource_type, it will return the left resource count specified of this tenant.
  2. query all resource_counts specified tenant_id, it will return all the left resource counts of this tenant.

  [1]https://review.openstack.org/#/c/250993/
  [2]https://github.com/openstack/nova/blob/12.0.0/nova/network/neutronv2/api.py#L1178

To manage notifications about this bug go to:
https://bugs.launchpad.net/neutron/+bug/1556786/+subscriptions