Public bug reported:
[Env]
OpenStack: icehouse
OS: ubuntu
enable l2 population
enable gre tunnel
[Description]
If the dhcp and l3 agent on the same host, then after this host is down, then
there will be a probability that scheduled to other same host, then sometimes
the ovs tunnel can't be created on the new scheduled host.
[Root cause]
After debugging, we found below log:
2015-01-14 13:44:18.284 9815 INFO neutron.plugins.ml2.drivers.l2pop.db
[req-e36fe1fe-a08c-43c9-9d9c-75fe714d6f91 None] query:[<neutron.db.model
s_v2.Port[object at 7f8d706a3650]
{tenant_id=u'ae27091dccf148249349d6396e10f230',
id=u'2061f5e4-c4a0-42ae-b611-4fe6c2c5cfbd', name=u'', network
_id=u'12ee7040-119a-47bf-a968-67509ebb8eda', mac_address=u'fa:16:3e:b6:20:8e',
admin_state_up=True, status=u'ACTIVE', device_id=u'dhcp28f6fc30-
af6e-5f44-ae85-dcc1cc074ee5-12ee7040-119a-47bf-a968-67509ebb8eda',
device_owner=u'network:dhcp'}>, <neutron.db.models_v2.Port[object at 7f8d706
a37d0] {tenant_id=u'ae27091dccf148249349d6396e10f230',
id=u'6e99eae8-5c6a-4b8e-b9e1-dbd8d133dfa1', name=u'',
network_id=u'12ee7040-119a-47bf-a9
68-67509ebb8eda', mac_address=u'fa:16:3e:22:56:ba', admin_state_up=True,
status=u'ACTIVE', device_id=u'e63a0802-d86d-4a30-95fa-0005a6aef6fb', d
evice_owner=u'network:router_interface'}>]
Above shows there will be a probability that two ACTIVE ports shows up in db
together, but from l2 pop mech_driver:
"
if agent_active_ports == 1 or (
self.get_agent_uptime(agent) < cfg.CONF.l2pop.agent_boot_time):
"
only in above condition the fdb entry will be added and notified to agent, so
failures are pop up.
** Affects: neutron
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1411163
Title:
No fdb entries added when failover dhcp and l3 agent together
Status in OpenStack Neutron (virtual network service):
New
Bug description:
[Env]
OpenStack: icehouse
OS: ubuntu
enable l2 population
enable gre tunnel
[Description]
If the dhcp and l3 agent on the same host, then after this host is down, then
there will be a probability that scheduled to other same host, then sometimes
the ovs tunnel can't be created on the new scheduled host.
[Root cause]
After debugging, we found below log:
2015-01-14 13:44:18.284 9815 INFO neutron.plugins.ml2.drivers.l2pop.db
[req-e36fe1fe-a08c-43c9-9d9c-75fe714d6f91 None] query:[<neutron.db.model
s_v2.Port[object at 7f8d706a3650]
{tenant_id=u'ae27091dccf148249349d6396e10f230',
id=u'2061f5e4-c4a0-42ae-b611-4fe6c2c5cfbd', name=u'', network
_id=u'12ee7040-119a-47bf-a968-67509ebb8eda',
mac_address=u'fa:16:3e:b6:20:8e', admin_state_up=True, status=u'ACTIVE',
device_id=u'dhcp28f6fc30-
af6e-5f44-ae85-dcc1cc074ee5-12ee7040-119a-47bf-a968-67509ebb8eda',
device_owner=u'network:dhcp'}>, <neutron.db.models_v2.Port[object at 7f8d706
a37d0] {tenant_id=u'ae27091dccf148249349d6396e10f230',
id=u'6e99eae8-5c6a-4b8e-b9e1-dbd8d133dfa1', name=u'',
network_id=u'12ee7040-119a-47bf-a9
68-67509ebb8eda', mac_address=u'fa:16:3e:22:56:ba', admin_state_up=True,
status=u'ACTIVE', device_id=u'e63a0802-d86d-4a30-95fa-0005a6aef6fb', d
evice_owner=u'network:router_interface'}>]
Above shows there will be a probability that two ACTIVE ports shows up in db
together, but from l2 pop mech_driver:
"
if agent_active_ports == 1 or (
self.get_agent_uptime(agent) <
cfg.CONF.l2pop.agent_boot_time):
"
only in above condition the fdb entry will be added and notified to agent, so
failures are pop up.
To manage notifications about this bug go to:
https://bugs.launchpad.net/neutron/+bug/1411163/+subscriptions
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