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neutron
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OpenStack Networking (Neutron)
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Kevin Benton a86274e8eb Check tap bridge timestamps to detect local changes 
During a quick instance rebuild on Nova, it may remove a tap
interface and then plug it in within the agent polling window.
In this scenario the agent will not realize a device has changed
and will therefore not ask the server for info an subsequently
update its status. This will prevent the notification from being
sent back to Nova that the vif plugging has finished so the
VM will never resume state.

This adds a new timestamp collection method to the common agent
manager interface for devices that is used by the common agent
loop to determine if a device has locally changed.

The linux bridge implementation of it checks the timestamps on the
tap interface's 'bridge' directory, which will change whenever
the tap is added to bridge.

Conflicts:
	neutron/agent/linux/bridge_lib.py
	neutron/plugins/ml2/drivers/agent/_agent_manager_base.py
	neutron/plugins/ml2/drivers/agent/_common_agent.py
	neutron/plugins/ml2/drivers/linuxbridge/agent/linuxbridge_neutron_agent.py
	neutron/plugins/ml2/drivers/macvtap/agent/macvtap_neutron_agent.py
	neutron/tests/functional/agent/linux/test_bridge_lib.py
	neutron/tests/unit/plugins/ml2/drivers/agent/test__common_agent.py

(cherry picked from commit 7afbd3a6b8)
Change-Id: If172470e907848556b6a8aff13520f94245919bb
 		2016-03-24 10:56:04 +01:00
bin Replace 'import json' with oslo_serialization 2015-08-11 06:05:37 -07:00
devstack SR-IOV: devstack support for SR-IOV agent 2015-09-09 15:06:37 +03:00
doc Merge "Add tests that constrain db query count" into stable/liberty 2016-01-31 07:35:52 +00:00
etc Add option for nova endpoint type 2016-03-23 09:35:13 +00:00
neutron Check tap bridge timestamps to detect local changes 2016-03-24 10:56:04 +01:00
rally-jobs Changes in rally-jobs/README.rst 2015-06-04 10:34:15 -04:00
releasenotes Add the rebinding chance in _bind_port_if_needed 2016-02-17 15:52:48 +00:00
tools Update devstack plugin for dependent packages 2016-03-22 20:43:28 +00:00
.coveragerc Change ignore-errors to ignore_errors 2015-09-21 14:31:29 +00:00
.gitignore Add reno for release notes management 2015-11-11 23:21:50 -08:00
.gitreview Update default branch in .gitreview to stable/liberty 2015-09-24 15:58:53 +00:00
.mailmap Add mailmap entry 2014-05-16 13:40:04 -04:00
.pylintrc pylint: enable `duplicate-key` check 2015-06-04 13:10:44 +10:00
.testr.conf Workaround test stream corruption issue. 2015-09-05 04:19:40 +00:00
CONTRIBUTING.rst Workflow documentation is now in infra-manual 2014-12-05 03:30:37 +00:00
HACKING.rst Python3: use six.iteritems() instead of dict.iteritems() 2015-06-01 23:13:42 +02:00
LICENSE Adding Apache Version 2.0 license file. This is the official license agreement under which Quantum code is available to 2011-08-08 12:31:04 -07:00
MANIFEST.in Rename Quantum to Neutron 2013-07-06 15:02:43 -04:00
README.rst Update the URLs to the Cloud Admin Guide 2015-08-24 17:24:34 +02:00
TESTING.rst Add testing coverage .rst, missing test infrastructure to-dos 2015-08-10 20:37:23 -04:00
babel.cfg Use babel to generate translation file 2013-01-24 00:20:32 +08:00
openstack-common.conf Switch to the oslo_utils.fileutils 2015-07-15 08:09:26 +03:00
requirements.txt Updated from global requirements 2015-12-20 17:23:45 +00:00
run_tests.sh Remove check for bash usage 2015-04-07 15:15:33 +00:00
setup.cfg move usage_audit to cmd/eventlet package 2015-12-18 16:19:20 +00:00
setup.py Updated from global requirements 2015-09-21 18:56:49 +00:00
test-requirements.txt Updated from global requirements 2015-11-17 03:15:49 +00:00
tox.ini Make all tox targets constrained 2016-03-07 13:28:11 +01:00

README.rst

Welcome!

You have come across a cloud computing network fabric controller. It has identified itself as "Neutron." It aims to tame your (cloud) networking!

External Resources:

The homepage for Neutron is: http://launchpad.net/neutron. Use this site for asking for help, and filing bugs. Code is available on git.openstack.org at <http://git.openstack.org/cgit/openstack/neutron>.

The latest and most in-depth documentation on how to use Neutron is available at: <http://docs.openstack.org>. This includes:

Neutron Administrator Guide

http://docs.openstack.org/admin-guide-cloud/networking.html

Networking Guide

http://docs.openstack.org/networking-guide/

Neutron API Reference:

http://docs.openstack.org/api/openstack-network/2.0/content/

Current Neutron developer documentation is available at:

http://wiki.openstack.org/NeutronDevelopment

For help on usage and hacking of Neutron, please send mail to <mailto:openstack-dev@lists.openstack.org>.

For information on how to contribute to Neutron, please see the contents of the CONTRIBUTING.rst file.