yahoo-eng-team team mailing list archive

[Nguyen Duy Binh <1845161@xxxxxxxxxxxxxxxxxx>]

** Also affects: ubuntu
   Importance: Undecided
       Status: New

** Information type changed from Public to Public Security

** Changed in: ubuntu
       Status: New => Invalid

** No longer affects: ubuntu

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https://bugs.launchpad.net/bugs/1845161

Title:
  Neutron QoS Policy lost on interfaces

Status in neutron:
  Fix Released

Bug description:
  Instance lost the QoS on interfaces with some operations like: reboot
  hard, live-migrate, migrate

     Description
     ===========
     When perform some operation with VM like: reboot hard, live-migrate, migrate, sometime, the QoS policy on the VM interfaces lost and neutron doesn't handle to restore it

     So user can avoid QoS per-port limitation and utilise all hosts
  bandwidth.

     Steps to reproduce
     ==================
    1. Create instance with port in neutron network(or can create a network with a QoS Policy)

    2. Create QoS in neutron:
    $ openstack network qos policy create --share qos-100Mb
    $ openstack network qos rule create --type bandwidth-limit --max-kbps 100000 --max-burst-kbits 0 --egress  qos-100Mb
    $ openstack network qos rule create --type bandwidth-limit --max-kbps 100000 --max-burst-kbits 0 --ingress qos-100Mb

    3. Update port of the instance, assign policy:
    $ openstack port set --qos-policy qos-100Mb PORT_UUID

    4. Ensure, that QoS rule is applied to the port:

  $ ovs-vsctl list interface qvoxxxxxxx-xx

  ......
  ingress_policing_burst: 80000
  ingress_policing_rate: 100000
  .......

  $ /sbin/tc -s qdisc show dev qvoxxxxxxx-xx
  qdisc htb 1: root refcnt 2 r2q 10 default 1 direct_packets_stat 0 direct_qlen 1000
   Sent 9701 bytes 93 pkt (dropped 0, overlimits 0 requeues 0)
   backlog 0b 0p requeues 0
  qdisc ingress ffff: parent ffff:fff1 ----------------
   Sent 9576 bytes 130 pkt (dropped 0, overlimits 0 requeues 0)
   backlog 0b 0p requeues 0

    5. Perform operation like: reboot hard, live-migrate, migrate

    6. Sometime after that operation, VM interfaces lost its QoS policy

  ovs-vsctl list interface qvoxxxxxxx-xx
  ......
  ingress_policing_burst: 0
  ingress_policing_rate: 0
  .......

     Expected result
     ===============
    QoS rules are restore to the port

     Actual result
     =============
    QoS rules are lost, port has no limit

     Environment
     ===========
     1. Exact version of OpenStack:
     OpenStack Queens and Openstack Rocky

     2. Which networking type did you use?
     Neutron with Open vSwitch

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