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[Vasyl Saienko <vsaienko@xxxxxxxxxxxx>]

Public bug reported:

Node termination [0] calls update_available_resources [1] for all nodes.
With huge number of instances it leads to super slow operations.

[0] https://github.com/openstack/ironic/blob/master/ironic/nova/compute/manager.py#L90
[1] https://github.com/openstack/nova/blob/master/nova/compute/manager.py#L6375

** Affects: ironic
     Importance: Undecided
     Assignee: Vasyl Saienko (vsaienko)
         Status: New

** Affects: nova
     Importance: Undecided
     Assignee: Vasyl Saienko (vsaienko)
         Status: New

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

** Changed in: ironic
     Assignee: (unassigned) => Vasyl Saienko (vsaienko)

** Changed in: nova
     Assignee: (unassigned) => Vasyl Saienko (vsaienko)

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https://bugs.launchpad.net/bugs/1552446

Title:
  terminate instance update resources for all nodes

Status in Ironic:
  New
Status in OpenStack Compute (nova):
  New

Bug description:
  Node termination [0] calls update_available_resources [1] for all
  nodes. With huge number of instances it leads to super slow
  operations.

  [0] https://github.com/openstack/ironic/blob/master/ironic/nova/compute/manager.py#L90
  [1] https://github.com/openstack/nova/blob/master/nova/compute/manager.py#L6375

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