22d4057a16
This patches adjusts the nova documentation about the extended port resource request support in nova as the neutron API extension did not land in Xena. Change-Id: I3b961426745084bdb4a6d04468f5a3c762be4cfa blueprint: qos-minimum-guaranteed-packet-rate
2.3 KiB
Using ports with resource request
Starting from microversion 2.72 nova supports creating servers with
neutron ports having resource request visible as a admin-only port
attribute resource_request. For example a neutron port has
resource request if it has a QoS minimum bandwidth rule attached.
Deleting such servers or detaching such ports works since Stein version
of nova without requiring any specific microversion.
However the following API operations are still not supported in nova:
- Creating servers with neutron networks having QoS minimum bandwidth rule is not supported. The user needs to pre-create the port in that neutron network and create the server with the pre-created port.
- Attaching Neutron ports and networks having QoS minimum bandwidth rule is not supported.
Also the following API operations are not supported in the 19.0.0 (Stein) version of nova:
- Moving (resizing, migrating, live-migrating, evacuating, unshelving after shelve offload) servers with ports having resource request is not yet supported.
As of 20.0.0 (Train), nova supports cold migrating and resizing
servers with neutron ports having resource requests if both the source
and destination compute services are upgraded to 20.0.0 (Train) and the
[upgrade_levels]/compute configuration does not prevent the
computes from using the latest RPC version. However cross cell resize
and cross cell migrate operations are still not supported with such
ports and Nova will fall back to same-cell resize if the server has such
ports.
As of 21.0.0 (Ussuri), nova supports evacuating, live migrating and unshelving 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
It is expected that neutron 20.0.0 (Yoga) will implement an extended
resource request format via the the
port-resource-request-groups neutron API extension. As of
nova 24.0.0 (Xena), nova already supports this extension if every
nova-compute service is upgraded to Xena version and the
[upgrade_levels]/compute configuration does not prevent the
computes from using the latest RPC version.
See the admin guide <admin/port_with_resource_request.html>
for administrative details.