Libvirt rate limit configuration data does not work for ethernet interfaces

[Anirban Chakraborty]

Libvirt network rate limiting configuration data of an ethernet interface are not honored when traffic is carried over that interface of the vm. For example, following configuration data, does not result in tc qdisc setting of the tap device in the host.

    <interface type="ethernet">
      <mac address="02:a3:a0:87:7f:61"/>
      <model type="virtio"/>
      <script path=""/>
      <target dev="tapa3a0877f-61"/>
      <bandwidth>
        <inbound average="800" peak="1000" burst="30"/>
        <outbound average="800" peak="1000" burst="30"/>
      </bandwidth>
    </interface>

[Anirban Chakraborty (abchak)]

The issue is fixed and here's the link to the patch. The root cause of the issue was that libvirt while configure tap device, doesn't apply qdisc settings to it. As a result, network traffic for this tap device is not shaped as per the configuration.

https://bitbucket.org/contrail_admin/libvirt/commits/c33be693e13fa9cd8daee448c80e9860050cb514
https://bitbucket.org/contrail_admin/libvirt/commits/a6aa7126d42994fd33ffe5c10f37e8ca765aaed2

[Foucault de Bonneval (foucaultdebonneval)]

This is not an Opencontrail bug, so I change the status to Invalid.

Anyway, huge thanks for the patch, we've been hitting the bug for a while now.

[Anirban Chakraborty (abchak)]

Adding clarification to the patches here.
Libvirt-0.9.8:
https://bitbucket.org/contrail_admin/libvirt/commits/c33be693e13fa9cd8daee448c80e9860050cb514
https://bitbucket.org/contrail_admin/libvirt/commits/a6aa7126d42994fd33ffe5c10f37e8ca765aaed2

Libvirt – 0.10.2:
https://bitbucket.org/contrail_admin/libvirt/commits/4e50747ce22b9532f75b48edb5d3d6feba962ecc
https://bitbucket.org/contrail_admin/libvirt/commits/a6aa7126d42994fd33ffe5c10f37e8ca765aaed2

The above patches have been submitted upstream libvirt and currently under discussion. Here's the link:
https://www.redhat.com/archives/libvir-list/2014-September/msg00251.html

[Yaguang Tang (heut2008)]

This bug affects Fuel 7.0,8.0 and 9.0 when using with Contrail plugin.

[Fuel Devops McRobotson (fuel-devops-robot)]

Change abandoned by Yaguang Tang <email address hidden> on branch: 9.0
Review: https://review.fuel-infra.org/25395