Re: [openstack-dev] [neutron] Backup port info to restore the flow rules

2016-02-22 Thread Jian Wen
On Mon, Feb 22, 2016 at 7:03 PM, Ihar Hrachyshka wrote: > Agent could probably try to restore the state from its internal state. If > that’s the missing bit you want to have, I think that could stand for a > proper RFE. > Good point. Thanks. -- Best, Jian

Re: [openstack-dev] [neutron] Backup port info to restore the flow rules

2016-02-22 Thread Jian Wen
wrote: > Jian Wen <wenjia...@gmail.com> wrote: > > Hello, >> >> If we restart OvS/ovs-agent when one or more of Neutron, MySQL and >> RabbitMQ is not available, the flow rules in OvS will be gone. If >> Neutron/MySQL/RabbitMQ doesn't become available in time, t

[openstack-dev] [neutron] Backup port info to restore the flow rules

2016-02-16 Thread Jian Wen
Hello, If we restart OvS/ovs-agent when one or more of Neutron, MySQL and RabbitMQ is not available, the flow rules in OvS will be gone. If Neutron/MySQL/RabbitMQ doesn't become available in time, the VMs will lose their network connections. It's not easy for an operations engineer to manually

Re: [Openstack-operators] Liberty and OVS Agent restarts

2016-02-13 Thread Jian Wen
Good to see the priority of the bug has been upgraded. When we hit the bug, everyone was under huge pressure. On Fri, Feb 12, 2016 at 11:01 PM, Clayton O'Neill wrote: > I’ve tried it with both a blank value and the specific value. It > doesn’t appear to make a difference.

Re: [Openstack-operators] Kilo NFV Performance Optimization advices on compute nodes

2015-10-09 Thread Jian Wen
You can try either of the following methods to distributes the load of processing received packets and spreads them across multiple CPUs. Receive Packet Steering: Optimizing EC2 Network Throughput On Multi-Core Servers Multi-Queue

Re: [openstack-dev] [chef] A new Core member!

2015-04-19 Thread Jian Wen
Congrats On Sat, Apr 18, 2015 at 5:42 AM, JJ Asghar jasg...@chef.io wrote: Hey everyone! I’d like to announce that Zhiwei Chen has stepped up as a new Core Member. Please take a moment to congratulate him! Thanks Zhiwei! JJ Asghar

Re: [openstack-dev] [neutron] HA of dhcp agents?

2014-10-20 Thread Jian Wen
See dhcp_agents_per_network in neutron.conf. https://bugs.launchpad.net/neutron/+bug/1174132 2014-10-21 6:47 GMT+08:00 Noel Burton-Krahn n...@pistoncloud.com: I've been working on failover for dhcp and L3 agents. I see that in [1], multiple dhcp agents can host the same network. However, it

Re: [openstack-dev] [Neutron] Is network ordering of vNICs guaranteed?

2014-08-13 Thread Jian Wen
Ordering of vNICs is not 100% guaranteed for the cloud images which are not shipped with /etc/udev/rules.d/70-persistent-net.rules. e.g. attaching a port and deattaching another port, then reboot the instance. 2014-08-12 15:52 GMT+08:00 Aaron Rosen aaronoro...@gmail.com: This bug was true in

Re: [openstack-dev] [nova] nova bug scrub web page

2014-07-04 Thread Jian Wen
Awesome! Any plan to add the neutron project? 2014-07-04 5:00 GMT+08:00 Tracy Jones tjo...@vmware.com: Hi Folks – I have taken a script from the infra folks and jogo, made some tweaks and have put it into a web page. Please see it here http://54.201.139.117/demo.html This is all of

[openstack-dev] [eventlet] should we use spawn instead of spawn_n?

2013-11-28 Thread Jian Wen
eventlet.spawn_n is the same as eventlet.spawn, but it’s not possible to know how the function terminated (i.e. no return value or exceptions)[1]. If an exception is raised in the function, spawn_n prints a stack trace. The stack trace will not be written to the log file. It will be lost if we

Re: [openstack-dev] Reg : Security groups implementation using openflows in quantum ovs plugin

2013-11-28 Thread Jian Wen
I don't think we can implement a stateful firewall[1] now. Once connection tracking capability[2] is added to the Linux OVS, we could start to implement the ovs-firewall-driver blueprint. [1] http://en.wikipedia.org/wiki/Stateful_firewall [2]

Re: [Openstack] Need help - Compute Node restarted - Ramdom Instances doesn't get and IP anymore

2013-11-21 Thread Jian Wen
It is https://bugs.launchpad.net/neutron/+bug/1091605 The patch fixes the above bug introduces another bug: https://bugzilla.redhat.com/show_bug.cgi?id=1010941 On Thu, Nov 21, 2013 at 2:18 PM, Jean-Daniel BUSSY silversurfer...@gmail.com wrote: Nice! Thanks Thiago for the details. Looks like

Re: [Openstack] [nova in havana]: vm status update delay when vm process is killed...

2013-09-29 Thread Jian Wen
Hello, Juha I can't reproduce this bug in a devstack environment freshly installed today. Instance's power state should be synced in a very short delay window since the following bp. https://blueprints.launchpad.net/nova/+spec/compute-driver-events What is the exact version of nova are you

Re: [openstack-dev] run_tests in debug mode fails

2013-09-10 Thread Jian Wen
Hello, I can confirm this is a bug. I use nosetests instead for the moment. nosetests -s test.module nosetests -s another.test:TestCase.test_method nosetests -s a.test:TestCase nosetests -s /path/to/test/file.py:test_function On Mon, Sep 9, 2013 at 7:20 PM, Rosa, Andrea (HP Cloud Services)

Re: [Openstack] Error when calling l3-agent-router-add

2013-09-05 Thread Jian Wen
Hello, In grizzly and havana, a router can only be hosted by a single l3 agent. The related bug report is https://bugs.launchpad.net/neutron/+bug/1154622 On Fri, Sep 6, 2013 at 12:37 AM, BRINGARD, KEVIN kb7...@att.com wrote: I think Robert's comment is correct. The router is currently