Public bug reported:
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.
** Affects: nova
Importance: Critical
Assignee: Sylvain Bauza (sylvain-bauza)
Status: Confirmed
** Affects: nova/victoria
Importance: Critical
Assignee: Sylvain Bauza (sylvain-bauza)
Status: Confirmed
** Tags: compute upgrade
** Changed in: nova
Status: New => Confirmed
** Changed in: nova
Importance: Undecided => High
** Changed in: nova
Importance: High => Critical
** Also affects: nova/victoria
Importance: Undecided
Status: New
** Changed in: nova/victoria
Importance: Undecided => Critical
** Changed in: nova
Assignee: (unassigned) => Sylvain Bauza (sylvain-bauza)
** Changed in: nova/victoria
Assignee: (unassigned) => Sylvain Bauza (sylvain-bauza)
** Changed in: nova/victoria
Status: New => Confirmed
** Tags added: compute upgrade
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Engineering Team, which is subscribed to OpenStack Compute (nova).
https://bugs.launchpad.net/bugs/1902925
Title:
Upgrades to compute RPC API 5.12 are broken
Status in OpenStack Compute (nova):
Confirmed
Status in OpenStack Compute (nova) victoria series:
Confirmed
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.
To manage notifications about this bug go to:
https://bugs.launchpad.net/nova/+bug/1902925/+subscriptions
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