[Bug 1799737] [NEW] l3 agent external_network_bridge broken with ovs
Junien Fridrick
1799737 at bugs.launchpad.net
Wed Oct 24 15:53:33 UTC 2018
Public bug reported:
Hi,
I'm running queens on xenial. The following commit introduced a
regression :
https://git.openstack.org/cgit/openstack/neutron/commit/?id=2b1d413ee90dfe2e9ae41c35ab37253df53fc6cd
(fixing bug 1767422)
The following call is wrong (in router_info.py) :
self.driver.remove_vlan_tag(self.agent_conf.external_network_bridge,
interface_name)
In this call, interface_name is something like "qg-abcdefg-12", but
remove_vlan_tag() expects a tap interface. This results in the following
log :
2018-10-24 00:28:40.880 23623 DEBUG ovsdbapp.backend.ovs_idl.transaction [-] Running txn command(idx=0): DbClearCommand(column=tag, table=Port, record=qg-0410dbf1-51) do_commit /usr/lib/python2.7/dist-packages/ovsdbapp/backend/ovs_idl/transaction.py:84
2018-10-24 00:28:40.881 23623 DEBUG ovsdbapp.backend.ovs_idl.transaction [-] Transaction aborted do_commit /usr/lib/python2.7/dist-packages/ovsdbapp/backend/ovs_idl/transaction.py:112
Sadly, the cause of the "Transaction aborted" is hidden (in https://github.com/openstack/ovsdbapp/blob/master/ovsdbapp/backend/ovs_idl/transaction.py#L87). If I print the exception, I get the following :
2018-10-24 00:28:40.881 23623 DEBUG ovsdbapp.backend.ovs_idl.transaction
[-] EXCEPTION Cannot find Port with name=qg-0410dbf1-51 do_commit
/usr/lib/python2.7/dist-
packages/ovsdbapp/backend/ovs_idl/transaction.py:88
Checking the ovs database reveals that Port "names" are the tap interfaces, not the qg- interfaces. The ports staying the VLAN 4095 will basically make the network unusable. Using the following call fixes my problem :
self.driver.remove_vlan_tag(self.agent_conf.external_network_bridge,
self.driver._get_tap_name(interface_name,prefix=EXTERNAL_DEV_PREFIX))
It would be nice to print the exception caught in
https://github.com/openstack/ovsdbapp/blob/master/ovsdbapp/backend/ovs_idl/transaction.py#L87
by the way...
Thanks !
For reference :
$ dpkg -l|grep neutron
ii neutron-common 2:12.0.3-0ubuntu1~cloud0 all Neutron is a virtual network service for Openstack - common
ii neutron-dhcp-agent 2:12.0.3-0ubuntu1~cloud0 all Neutron is a virtual network service for Openstack - DHCP agent
ii neutron-l3-agent 2:12.0.3-0ubuntu1~cloud0 all Neutron is a virtual network service for Openstack - l3 agent
ii neutron-lbaas-common 2:12.0.0-0ubuntu1~cloud0 all Neutron is a virtual network service for Openstack - common
ii neutron-lbaasv2-agent 2:12.0.0-0ubuntu1~cloud0 all Neutron is a virtual network service for Openstack - LBaaSv2 agent
ii neutron-metadata-agent 2:12.0.3-0ubuntu1~cloud0 all Neutron is a virtual network service for Openstack - metadata agent
ii neutron-metering-agent 2:12.0.3-0ubuntu1~cloud0 all Neutron is a virtual network service for Openstack - metering agent
ii neutron-openvswitch-agent 2:12.0.3-0ubuntu1~cloud0 all Neutron is a virtual network service for Openstack - Open vSwitch plugin agent
ii python-neutron 2:12.0.3-0ubuntu1~cloud0 all Neutron is a virtual network service for Openstack - Python library
ii python-neutron-fwaas 1:12.0.0-0ubuntu1~cloud0 all Firewall-as-a-Service driver for OpenStack Neutron
ii python-neutron-lbaas 2:12.0.0-0ubuntu1~cloud0 all Loadbalancer-as-a-Service driver for OpenStack Neutron
ii python-neutron-lib 1.13.0-0ubuntu1~cloud0 all Neutron shared routines and utilities - Python 2.7
ii python-neutronclient 1:6.7.0-0ubuntu1~cloud0 all client API library for Neutron - Python 2.7
** Affects: neutron (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1799737
Title:
l3 agent external_network_bridge broken with ovs
Status in neutron package in Ubuntu:
New
Bug description:
Hi,
I'm running queens on xenial. The following commit introduced a
regression :
https://git.openstack.org/cgit/openstack/neutron/commit/?id=2b1d413ee90dfe2e9ae41c35ab37253df53fc6cd
(fixing bug 1767422)
The following call is wrong (in router_info.py) :
self.driver.remove_vlan_tag(self.agent_conf.external_network_bridge,
interface_name)
In this call, interface_name is something like "qg-abcdefg-12", but
remove_vlan_tag() expects a tap interface. This results in the
following log :
2018-10-24 00:28:40.880 23623 DEBUG ovsdbapp.backend.ovs_idl.transaction [-] Running txn command(idx=0): DbClearCommand(column=tag, table=Port, record=qg-0410dbf1-51) do_commit /usr/lib/python2.7/dist-packages/ovsdbapp/backend/ovs_idl/transaction.py:84
2018-10-24 00:28:40.881 23623 DEBUG ovsdbapp.backend.ovs_idl.transaction [-] Transaction aborted do_commit /usr/lib/python2.7/dist-packages/ovsdbapp/backend/ovs_idl/transaction.py:112
Sadly, the cause of the "Transaction aborted" is hidden (in https://github.com/openstack/ovsdbapp/blob/master/ovsdbapp/backend/ovs_idl/transaction.py#L87). If I print the exception, I get the following :
2018-10-24 00:28:40.881 23623 DEBUG
ovsdbapp.backend.ovs_idl.transaction [-] EXCEPTION Cannot find Port
with name=qg-0410dbf1-51 do_commit /usr/lib/python2.7/dist-
packages/ovsdbapp/backend/ovs_idl/transaction.py:88
Checking the ovs database reveals that Port "names" are the tap interfaces, not the qg- interfaces. The ports staying the VLAN 4095 will basically make the network unusable. Using the following call fixes my problem :
self.driver.remove_vlan_tag(self.agent_conf.external_network_bridge,
self.driver._get_tap_name(interface_name,prefix=EXTERNAL_DEV_PREFIX))
It would be nice to print the exception caught in
https://github.com/openstack/ovsdbapp/blob/master/ovsdbapp/backend/ovs_idl/transaction.py#L87
by the way...
Thanks !
For reference :
$ dpkg -l|grep neutron
ii neutron-common 2:12.0.3-0ubuntu1~cloud0 all Neutron is a virtual network service for Openstack - common
ii neutron-dhcp-agent 2:12.0.3-0ubuntu1~cloud0 all Neutron is a virtual network service for Openstack - DHCP agent
ii neutron-l3-agent 2:12.0.3-0ubuntu1~cloud0 all Neutron is a virtual network service for Openstack - l3 agent
ii neutron-lbaas-common 2:12.0.0-0ubuntu1~cloud0 all Neutron is a virtual network service for Openstack - common
ii neutron-lbaasv2-agent 2:12.0.0-0ubuntu1~cloud0 all Neutron is a virtual network service for Openstack - LBaaSv2 agent
ii neutron-metadata-agent 2:12.0.3-0ubuntu1~cloud0 all Neutron is a virtual network service for Openstack - metadata agent
ii neutron-metering-agent 2:12.0.3-0ubuntu1~cloud0 all Neutron is a virtual network service for Openstack - metering agent
ii neutron-openvswitch-agent 2:12.0.3-0ubuntu1~cloud0 all Neutron is a virtual network service for Openstack - Open vSwitch plugin agent
ii python-neutron 2:12.0.3-0ubuntu1~cloud0 all Neutron is a virtual network service for Openstack - Python library
ii python-neutron-fwaas 1:12.0.0-0ubuntu1~cloud0 all Firewall-as-a-Service driver for OpenStack Neutron
ii python-neutron-lbaas 2:12.0.0-0ubuntu1~cloud0 all Loadbalancer-as-a-Service driver for OpenStack Neutron
ii python-neutron-lib 1.13.0-0ubuntu1~cloud0 all Neutron shared routines and utilities - Python 2.7
ii python-neutronclient 1:6.7.0-0ubuntu1~cloud0 all client API library for Neutron - Python 2.7
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