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Reject server create with extended resource req

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To prepare for the unlikely event that Neutron merges and an operator
enables the port-resource-request-groups neutron API extension before
nova adds support for it, this patch rejects server creation if such
extension is enabled in Neutron. Enabling that extension has zero
benefits without nova support hence the harsh but simple rejection.

A subsequent patch will reject server lifecycle operations in a more
sophisticated way and as soon as we support some operations, like
boot, the deployer might rightfully choose to enable the Neutron
extension.

Change-Id: I2c55d9da13a570efbc1c862116cea31aaa6aa02e
blueprint: qos-minimum-guaranteed-packet-rate
This commit is contained in:
Balazs Gibizer
2021-05-28 16:49:50 +02:00
parent 017b0a3d23
commit e357ad3c23
7 changed files with 128 additions and 7 deletions
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api-guide/source/port_with_resource_request.rst
+10
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@@ -39,5 +39,15 @@ servers with neutron ports having resource requests.
As of 23.0.0 (Wallaby), nova supports attaching neutron ports having QoS
minimum bandwidth rules.
Extended resource request
~~~~~~~~~~~~~~~~~~~~~~~~~
Since neutron 19.0.0 (Xena), neutron implements an extended resource request
format via the the ``port-resource-request-groups`` neutron API extension. As
of nova 24.0.0 (Xena), nova does not support the new extension. If the
extension is enabled in neutron, then nova will reject server create and move
operations, as well as interface attach operation. Admins should not enable
this API extension in neutron.
See :nova-doc:`the admin guide <admin/port_with_resource_request.html>` for
administrative details.