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[Elod Illes <1902925@xxxxxxxxxxxxxxxxxx>]

** Changed in: nova/victoria
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1902925

Title:
  Upgrades to compute RPC API 5.12 are broken

Status in OpenStack Compute (nova):
  Fix Released
Status in OpenStack Compute (nova) victoria series:
  Fix Released

Bug description:
  In change https://review.opendev.org/#/c/715326/ we allowed a new
  argument to the rebuild_instance() RPC method named 'accel_uuids'.

  In the same change, in order to manage different version of computes, we allowed to not pass this argument if the destination RPC service is not able to speak 5.12.
  That being said, as we forgot to make the accel_uuids argument be nullable, we then accordingly cast a call to the compute manager without this attribute while it expects it, which would lead to a TypeError on the server side.

  FWIW, this can happen with any RPC pin, even with the compute='auto'
  default value as this value will elect to automatically pin a version
  that both the source and destination can support.

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