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OpenStack Networking (Neutron)
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Andreas Scheuring 4cb9062319 lb: avoid doing nova VIF work plumbing tap to qbr 
neutron should rely on nova doing the job instead of trying to 'fix' it.
'Fixing' it introduces race conditions between lb agent and nova VIF
driver. Particularly, lb agent can scan for new tap devices in the
middle of nova plumbing qbr-tap setup, and attempt to do it on its own.
So if agent is more lucky to plug the tap device into the bridge, nova
may fail to do the same, getting the following error:

libvirtError: Unable to add bridge brqxxx-xx port tapxxx-xx: Device or
resource busy

This also requires a change in how the port admin_state_up is implemented
by setting the tap device's link state instead of moving it in or out
of the bridge.

Conflicts:
	neutron/common/constants.py
	neutron/plugins/ml2/drivers/linuxbridge/agent/linuxbridge_neutron_agent.py
	neutron/tests/unit/plugins/ml2/drivers/linuxbridge/agent/test_linuxbridge_neutron_agent.py

Co-Authored-By: Sean M. Collins <sean@coreitpro.com>
Co-Authored-By: Darragh O'Reilly <darragh.oreilly@hp.com>
Co-Authored-By: Andreas Scheuring <andreas.scheuring@de.ibm.com>
Closes-Bug: #1312016
(cherry picked from commit f42ea67995)

===

Also squashed in the following follow up fix:

lb: Correct String formatting to get rid of logged ValueError

The following error is caused by a missing String formatting in the
linuxbridge agent:
"ValueError: unsupported format character 'a' (0x61) at index 90
Logged from file linuxbridge_neutron_agent.py, line 447"

In addition a duplicated word in the log text has been fixed.

Change-Id: I587f1165fc7084dc9c4806149b65652f6e27b14e
(cherry picked from commit 1f86d8687b)

===

Also squashed in:

Only ensure admin state on ports that exist

The linux bridge agent was calling ensure_port_admin state
unconditionally on ports in treat_devices_added_or_updated.
This would cause it to throw an error on interfaces that
didn't exist so it would restart the entire processing loop.

If another port was being updated in the same loop before this
one, that port would experience a port status life-cycle of
DOWN->BUILD->ACTIVE->BUILD->ACTIVE
                   ^ <--- Exception in unrelated port causes cycle
                          to start over again.

This causes the bug below because the first active transition will
cause Nova to boot the VM. At this point tempest tests expect the
ports that belong to the VM to be in the ACTIVE state so it filters
Neutron port list calls with "status=ACTIVE". Therefore tempest would
not get any ports back and assume there was some kind of error with
the port and bail.

This patch just makes sure the admin state call is skipped if the port
doesn't exist and it includes a basic unit test to prevent a regression.

Conflicts:
	neutron/plugins/ml2/drivers/linuxbridge/agent/linuxbridge_neutron_agent.py

Closes-Bug: #1523638
Change-Id: I5330c6111cbb20bf45aec9ade7e30d34e8dd16ca
(cherry picked from commit 96c67e22f9)

===

Change-Id: I02971103407b4ec11a65218e9ef7e2708915d938
 		2016-03-24 11:43:46 +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 lb: avoid doing nova VIF work plumbing tap to qbr 2016-03-24 11:43:46 +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.