Revision as of 22:25, 21 October 2015

Meetings

• Weekly on Thursday at 1500 UTC
• IRC channel: #openstack-meeting-3 on freenode
• Chair: Carl Baldwin (carl_baldwin)
• Meetings, with their notes and logs, will be found under http://eavesdrop.openstack.org/meetings/neutron_l3

Agenda

Meeting October 22nd, 2015

• Apologies for Absence
• Annoucements
• Bugs (all bugs Tagged with l3-ipam-dhcp, all bugs tagged with l3-dvr-backlog)
  • Critical
  • High importance
    • https://bugs.launchpad.net/neutron/+bug/1365473 Unable to create a router that's both HA and distributed.
      
      • Owner is now Adolfo Duarte. Working on server side fix: https://review.openstack.org/#/c/143169/. Patchset last update on 10/20
    • https://bugs.launchpad.net/neutron/+bug/1494351 Observed StaleDataError in gate-neutron-dsvm-api tests if reference IPAM driver is used.
      • 2 fixes under Gerrit topic: https://review.openstack.org/#/q/status:open+project:openstack/neutron+branch:master+topic:bug/1494351,n,z
    • https://bugs.launchpad.net/neutron/+bug/1486795 DVR: create or update port by using notify specific host rather than fanout. Confusion as to what of 3 proposed patchsets is the correct one:
      • https://review.openstack.org/#/c/221209/. Submitter of this one agrees that next patchset is a better solution
      • https://review.openstack.org/#/c/231555/. In merge conflict
      • https://review.openstack.org/#/c/215457/
    • https://bugs.launchpad.net/neutron/+bug/1486828 L3: Notify specific agent rather than fanout when associating floatingip.
      • Partial fix merged on 10/20: https://review.openstack.org/#/c/237476/
      • Proposed fix https://review.openstack.org/#/c/231455/
      • https://review.openstack.org/#/c/215136 was reverted by https://review.openstack.org/#/c/236955/
    • https://bugs.launchpad.net/neutron/+bug/1476097 [fwaas]Support fwaas to control east-west traffic in dvr router. Triaged and classified as rfe-approved by armax. Assignee lee jian (leejian0612). Fix was abandoned in August. Not visible activity since then.
    • https://bugs.launchpad.net/neutron/+bug/1505575 Fatal memory consumption by neutron-server with DVR at scale
      • Assigned to Oleg Bondarev (obondarev). Proposed fix: https://review.openstack.org/#/c/234067/ is active and getting reviews
    • https://bugs.launchpad.net/neutron/+bug/1462154 With DVR Pings to floating IPs replied with fixed-ips. Importance raised on 10/20 to high
      • Proposed fix: https://review.openstack.org/#/c/233334/
    • https://bugs.launchpad.net/neutron/+bug/1504726 The vm can not access the vip of load balancer under DVR enviroment. Assigned to Swami, gathering information.
    • https://bugs.launchpad.net/neutron/+bug/1507602 _get_router() sometimes raises RouterNotFound when called from under create_floatingip.
      • Merged fix: https://review.openstack.org/#/c/237476/. Is this only a partial fix?????
  • Other
    • https://bugs.launchpad.net/neutron/+bug/1505571 VM delete operation fails with 'Connection to neutron failed - Read timeout' error - eyes from the DVR team on this and the patch will be appreciated
• Routed network segments:
  • Spec: Model changes to support routed network groups https://review.openstack.org/#/c/225384/
  • Mail thread: https://www.mail-archive.com/openstack-dev@lists.openstack.org/msg58876.html
  • RFE https://bugs.launchpad.net/neutron/+bug/1458890
  • Proposed devref https://review.openstack.org/#/c/196812/
• DVR
  • Failure rate is consistently higher than non-DVR
  • Patchsets needed to fix instability:
    • https://review.openstack.org/#/c/228582/ Cache the ARP entries in L3 Agent for DVR
    • https://review.openstack.org/#/c/229561/ Test Patch 1 FIP Namespace issue
    • https://review.openstack.org/#/c/228026/ Static routes not added to qrouter namespace for DVR
    • https://review.openstack.org/#/c/225319/ Update internal snat port prefix for multiple IPv6 subnets
    • https://review.openstack.org/#/c/229010/ Add IPDevice.exists() method
• BGP dynamic routing
• IPAM
• ML3 router plugin
  • Collecting use cases https://etherpad.openstack.org/p/neutron-modular-l3-router-plugin-use-cases
• DNS
• Address Scopes
• IPv6
• Open discussion

Meeting commands

/join #openstack-meeting-3
#startmeeting neutron_l3
#topic Announcements
#undo topic
#link https://wiki.openstack.org/wiki/Meetings/Neutron-L3-Subteam
#action carl_baldwin will get something specific done this week <br /> ...<br /> <br /> <nowiki>#endmeeting

Sub-team Charter

Develops and Maintains L3 related components of Neutron.

Team Charter for Liberty

1. [IPAM] Support pluggable external IPAM
2. [Dynamic Routing] Integrate dynamic routing (with BGP implementation) with Neutron (not BGP/MPLS)
3. [DNS] Reconcile the DNS name of instances between Nova and Neutron. Once this is achieved, integrate Designate and Neutron
4. [Address Scopes] Implement Address Scopes as a first level abstraction in Neutron to improve the management or routable IPv4 and IPv6 ranges
5. [Network Segments] Add concept of L3 routed network segments (needs more definition)

Bugs

Critical

https://bugs.launchpad.net/neutron/+bug/1494114 - Bad router request: Router already has a port on subnet

High

https://bugs.launchpad.net/neutron/+bug/1404743 sporadic test failures due to VMs not getting a DHCP lease
https://bugs.launchpad.net/neutron/+bug/1469322 Associating a floatingip with a dual stack port requires the fixed-address to be specified

• Bugs Marked with at Least High Importance
• All Bugs Tagged with l3-ipam-dhcp
• https://bugs.launchpad.net/neutron/+bug/1475093 l3_db updates port db without calling l2 plugin: this bug is blocking ML2 mechanism driver
  • https://review.openstack.org/#/c/202357/
  • https://review.openstack.org/#/c/202358/
  • https://review.openstack.org/#/c/202359/

Routing Network Segments

(was pluggable-ext-net)

Superseded spec: https://review.openstack.org/#/c/88619/

Juno Design Summit: Session, Etherpad

bgp-dynamic-routing

List of patches under review. Under each sub-heading, I recommend reviewing the patches in the order listed.

• Changes
  • Introduce routing instance entity
  • Introduce dynamic routing agent and agent scheduling
  • Add BGP driver and synchronise data between agent and API

• Testing
  • How to test the patches

Is worth to mention that Dynamic Routing spec is being re-designed for Kilo and some entities and concepts can change.

BGP Speakers Comparison Juno Design Summit: Session

neutron-ipam

Juno Design Summit: Etherpad

ML3 Router plugin

• collecting use cases https://etherpad.openstack.org/p/neutron-modular-l3-router-plugin-use-cases
• blueprint https://blueprints.launchpad.net/neutron/+spec/l3-plugin-for-routervm
• spec https://review.openstack.org/#/c/105078/
• RFE https://bugs.launchpad.net/neutron/+bug/1461133

dns-resolution

This work is being resumed for Liberty.

Address Scopes

IPv6 Prefix Delegation

Re-proposed and approved for Liberty. Code and documentaion on gerrit for review.

Patches out for review, in order of precedence:

• Code
  • DB & API changes for IPv6 Prefix Delegation
  • L3 agent changes and reference implementation for IPv6 PD

• Documentation
  • Add content for the IPv6 Prefix Delegation Section

IPv6

The status of IPV6 under Neutron as of the end of Kilo is summarized here: IPv6 Manual. Please feel free to correct any mistakes or add missing information.

Currently, IPv6 Tempest tests are being beefed up:

• https://bugs.launchpad.net/tempest/+bug/1401726 Tempest IPv6 scenario tests use IPv4 and floating IPs to connect and test

Bugs which need discussion:

• https://launchpad.net/bugs/1460720 bug 1460720 Move ipv6_gateway L3 config to CLI

Other Blueprints

Blueprint: neutron-ovs-dvr

Distributed-Virtual-Router meetings are still on-going.

Need to keep an eye on the DVR tempest failure rate. This job is experimental but we hope to make it voting soon. It should have a similar failure rate to the full non-dvr tempest job.

Blueprint: dragonflow

This work is currently inactive while we work on DVR and a few other priorities.

Repo: https://github.com/stackforge/dragonflow
Blog: http://blog.gampel.net/2015/01/neutron-dvr-sdn-way.html

Blueprint: l3 plugin for routervm/modular l3 router plugin

This work will be resumed for Liberty. The blueprint will be updated for Liberty soon.

Need to discuss

• repository: in neutron or stackforge for Liberty?
  • plugin
  • reference implementation
  • config agent