Public bug reported:
When creating the router and enable pd subnet with the below commands:
neutron router-create ha-router
neutron router-gateway-set ha-router public
neutron router-interface-add ha-router ipv6-pd-subnet
lla timeout on creating with the following trace in l3 agent log:
raceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/eventlet/hubs/hub.py", line 457,
in fire_timers
timer()
File "/usr/local/lib/python2.7/dist-packages/eventlet/hubs/timer.py", line
58, in __call__
cb(*args, **kw)
File "/opt/stack/neutron/neutron/agent/linux/pd.py", line 228, in
_ensure_lla_task
sleep=2)
File "/opt/stack/neutron/neutron/common/utils.py", line 750, in
wait_until_true
eventlet.sleep(sleep)
File "/usr/local/lib/python2.7/dist-packages/eventlet/greenthread.py", line
34, in sleep
hub.switch()
File "/usr/local/lib/python2.7/dist-packages/eventlet/hubs/hub.py", line 294,
in switch
return self.greenlet.switch()
Timeout: 40 seconds
Note that the order of neutron commands are significant.
Checking the l3 agent log further, gateways were added twice in a row.
The later one removed the lla added in the earlier, which caused the
timeout.
2016-11-03 11:03:26.517 ^[[00;32mDEBUG neutron.agent.l3.router_info
[^[[00;36m-^[[00;32m] ^[[01;35m^[[00;32mExternal gateway added:
port({u'allowed_address_pairs': [], u'extra_dhcp_opts': [], u'updated_at':
u'2016-11-03T15:03:22Z', u'device_owner': u'network:router_gateway',
u'revision_number': 5, u'port_security_enabled': False, u'binding:profile': {},
u'binding:vnic_type': u'normal', u'fixed_ips': [{u'subnet_id':
u'e8cbec96-2ea4-43d5-a717-93b03231d393', u'prefixlen': 24, u'ip_address':
u'172.24.4.7'}, {u'subnet_id': u'68fc0073-619a-43ca-be62-569842366e48',
u'prefixlen': 64, u'ip_address': u'2001:db8::8'}], u'id':
u'95b57ead-f411-4f7b-8eda-e2a7b4623ac6', u'security_groups': [],
u'binding:vif_details': {}, u'address_scopes': {u'4': None, u'6': None},
u'binding:vif_type': u'unbound', u'mac_address': u'fa:16:3e:2e:2f:58',
u'project_id': u'', u'status': u'DOWN', u'subnets': [{u'dns_nameservers': [],
u'ipv6_ra_mode': None, u'gateway_ip': u'172.24.4.1', u'cidr': u'172.24.4.0/24',
u'id': u
'e8cbec96-2ea4-43d5-a717-93b03231d393', u'subnetpool_id': None},
{u'dns_nameservers': [], u'ipv6_ra_mode': None, u'gateway_ip': u'2001:db8::2',
u'cidr': u'2001:db8::/64', u'id': u'68fc0073-619a-43ca-be62-569842366e48',
u'subnetpool_id': None}], u'binding:host_id': u'ip6-devstack-43',
u'description': u'', u'device_id': u'0269742e-56e5-468c-974a-859bb1966a62',
u'name': u'', u'admin_state_up': True, u'network_id':
u'8da945b9-8ac2-4d1b-840f-094dbd794500', u'tenant_id': u'', u'created_at':
u'2016-11-03T15:03:22Z', u'mtu': 1500, u'extra_subnets': []}),
interface(qg-95b57ead-f4),
ns(qrouter-0269742e-56e5-468c-974a-859bb1966a62)^[[00m ^[[00;33mfrom
(pid=28145) _external_gateway_added
/opt/stack/neutron/neutron/agent/l3/router_info.py:632^[[00m
.....
2016-11-03 11:03:34.338 DEBUG neutron.agent.linux.utils [-] Running
command (rootwrap daemon): ['ip', 'netns', 'exec', 'qrouter-0269742e-
56e5-468c-974a-859bb1966a62', 'ip', '-6', 'addr', 'add',
'fe80::f816:3eff:fecc:7a22/64', 'scope', 'link', 'dev', 'qg-
95b57ead-f4'] from (pid=28145) execute_rootwrap_daemon
/opt/stack/neutron/neutron/agent/linux/utils.py:100
The above log took place when the gw_port was added the first time .
2016-11-03 11:03:34.413 ^[[00;32mDEBUG neutron.agent.l3.router_info
[^[[00;36m-^[[00;32m] ^[[01;35m^[[00;32mExternal gateway added:
port({u'allowed_address_pairs': [], u'extra_dhcp_opts': [], u'updated_at':
u'2016-11-03T15:03:30Z', u'device_owner': u'network:router_gateway',
u'revision_number': 8, u'port_security_enabled': False, u'binding:profile': {},
u'binding:vnic_type': u'normal', u'fixed_ips': [{u'subnet_id':
u'e8cbec96-2ea4-43d5-a717-93b03231d393', u'prefixlen': 24, u'ip_address':
u'172.24.4.7'}, {u'subnet_id': u'68fc0073-619a-43ca-be62-569842366e48',
u'prefixlen': 64, u'ip_address': u'2001:db8::8'}], u'id':
u'95b57ead-f411-4f7b-8eda-e2a7b4623ac6', u'security_groups': [],
u'binding:vif_details': {u'port_filter': True, u'ovs_hybrid_plug': True},
u'address_scopes': {u'4': None, u'6': None}, u'binding:vif_type': u'ovs',
u'mac_address': u'fa:16:3e:2e:2f:58', u'project_id': u'', u'status': u'ACTIVE',
u'subnets': [{u'dns_nameservers': [], u'ipv6_ra_mode': None, u'gateway_ip':
u'172.
24.4.1', u'cidr': u'172.24.4.0/24', u'id':
u'e8cbec96-2ea4-43d5-a717-93b03231d393', u'subnetpool_id': None},
{u'dns_nameservers': [], u'ipv6_ra_mode': None, u'gateway_ip': u'2001:db8::2',
u'cidr': u'2001:db8::/64', u'id': u'68fc0073-619a-43ca-be62-569842366e48',
u'subnetpool_id': None}], u'binding:host_id': u'ip6-devstack-43',
u'description': u'', u'device_id': u'0269742e-56e5-468c-974a-859bb1966a62',
u'name': u'', u'admin_state_up': True, u'network_id':
u'8da945b9-8ac2-4d1b-840f-094dbd794500', u'tenant_id': u'', u'created_at':
u'2016-11-03T15:03:22Z', u'mtu': 1500, u'extra_subnets': []}),
interface(qg-95b57ead-f4),
ns(qrouter-0269742e-56e5-468c-974a-859bb1966a62)^[[00m ^[[00;33mfrom
(pid=28145) _external_gateway_added
/opt/stack/neutron/neutron/agent/l3/router_info.py:632^[[00m
......
2016-11-03 11:03:38.513 DEBUG neutron.agent.linux.utils [-] Running command
(rootwrap daemon): ['ip', 'netns', 'exec',
'qrouter-0269742e-56e5-468c-974a-859bb1966a62', 'ip', '-6', 'addr', 'del',
'fe80::f816:3eff:fecc:7a22/64', 'dev', 'qg-95b57ead-f4'] from (pid=28145)
execute_rootwrap_daemon /opt/stack/neutron/neutron/agent/linux/utils.py:100
the above log took place when the gw_port was added the second time
** Affects: neutron
Importance: Undecided
Assignee: Baodong (Robert) Li (baoli)
Status: New
** Changed in: neutron
Assignee: (unassigned) => Baodong (Robert) Li (baoli)
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https://bugs.launchpad.net/bugs/1639042
Title:
Prefix delegation doesn't work in the described scenario
Status in neutron:
New
Bug description:
When creating the router and enable pd subnet with the below commands:
neutron router-create ha-router
neutron router-gateway-set ha-router public
neutron router-interface-add ha-router ipv6-pd-subnet
lla timeout on creating with the following trace in l3 agent log:
raceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/eventlet/hubs/hub.py", line
457, in fire_timers
timer()
File "/usr/local/lib/python2.7/dist-packages/eventlet/hubs/timer.py", line
58, in __call__
cb(*args, **kw)
File "/opt/stack/neutron/neutron/agent/linux/pd.py", line 228, in
_ensure_lla_task
sleep=2)
File "/opt/stack/neutron/neutron/common/utils.py", line 750, in
wait_until_true
eventlet.sleep(sleep)
File "/usr/local/lib/python2.7/dist-packages/eventlet/greenthread.py", line
34, in sleep
hub.switch()
File "/usr/local/lib/python2.7/dist-packages/eventlet/hubs/hub.py", line
294, in switch
return self.greenlet.switch()
Timeout: 40 seconds
Note that the order of neutron commands are significant.
Checking the l3 agent log further, gateways were added twice in a row.
The later one removed the lla added in the earlier, which caused the
timeout.
2016-11-03 11:03:26.517 ^[[00;32mDEBUG neutron.agent.l3.router_info
[^[[00;36m-^[[00;32m] ^[[01;35m^[[00;32mExternal gateway added:
port({u'allowed_address_pairs': [], u'extra_dhcp_opts': [], u'updated_at':
u'2016-11-03T15:03:22Z', u'device_owner': u'network:router_gateway',
u'revision_number': 5, u'port_security_enabled': False, u'binding:profile': {},
u'binding:vnic_type': u'normal', u'fixed_ips': [{u'subnet_id':
u'e8cbec96-2ea4-43d5-a717-93b03231d393', u'prefixlen': 24, u'ip_address':
u'172.24.4.7'}, {u'subnet_id': u'68fc0073-619a-43ca-be62-569842366e48',
u'prefixlen': 64, u'ip_address': u'2001:db8::8'}], u'id':
u'95b57ead-f411-4f7b-8eda-e2a7b4623ac6', u'security_groups': [],
u'binding:vif_details': {}, u'address_scopes': {u'4': None, u'6': None},
u'binding:vif_type': u'unbound', u'mac_address': u'fa:16:3e:2e:2f:58',
u'project_id': u'', u'status': u'DOWN', u'subnets': [{u'dns_nameservers': [],
u'ipv6_ra_mode': None, u'gateway_ip': u'172.24.4.1', u'cidr': u'172.24.4.0/24',
u'id':
u'e8cbec96-2ea4-43d5-a717-93b03231d393', u'subnetpool_id': None},
{u'dns_nameservers': [], u'ipv6_ra_mode': None, u'gateway_ip': u'2001:db8::2',
u'cidr': u'2001:db8::/64', u'id': u'68fc0073-619a-43ca-be62-569842366e48',
u'subnetpool_id': None}], u'binding:host_id': u'ip6-devstack-43',
u'description': u'', u'device_id': u'0269742e-56e5-468c-974a-859bb1966a62',
u'name': u'', u'admin_state_up': True, u'network_id':
u'8da945b9-8ac2-4d1b-840f-094dbd794500', u'tenant_id': u'', u'created_at':
u'2016-11-03T15:03:22Z', u'mtu': 1500, u'extra_subnets': []}),
interface(qg-95b57ead-f4),
ns(qrouter-0269742e-56e5-468c-974a-859bb1966a62)^[[00m ^[[00;33mfrom
(pid=28145) _external_gateway_added
/opt/stack/neutron/neutron/agent/l3/router_info.py:632^[[00m
.....
2016-11-03 11:03:34.338 DEBUG neutron.agent.linux.utils [-] Running
command (rootwrap daemon): ['ip', 'netns', 'exec', 'qrouter-0269742e-
56e5-468c-974a-859bb1966a62', 'ip', '-6', 'addr', 'add',
'fe80::f816:3eff:fecc:7a22/64', 'scope', 'link', 'dev', 'qg-
95b57ead-f4'] from (pid=28145) execute_rootwrap_daemon
/opt/stack/neutron/neutron/agent/linux/utils.py:100
The above log took place when the gw_port was added the first time .
2016-11-03 11:03:34.413 ^[[00;32mDEBUG neutron.agent.l3.router_info
[^[[00;36m-^[[00;32m] ^[[01;35m^[[00;32mExternal gateway added:
port({u'allowed_address_pairs': [], u'extra_dhcp_opts': [], u'updated_at':
u'2016-11-03T15:03:30Z', u'device_owner': u'network:router_gateway',
u'revision_number': 8, u'port_security_enabled': False, u'binding:profile': {},
u'binding:vnic_type': u'normal', u'fixed_ips': [{u'subnet_id':
u'e8cbec96-2ea4-43d5-a717-93b03231d393', u'prefixlen': 24, u'ip_address':
u'172.24.4.7'}, {u'subnet_id': u'68fc0073-619a-43ca-be62-569842366e48',
u'prefixlen': 64, u'ip_address': u'2001:db8::8'}], u'id':
u'95b57ead-f411-4f7b-8eda-e2a7b4623ac6', u'security_groups': [],
u'binding:vif_details': {u'port_filter': True, u'ovs_hybrid_plug': True},
u'address_scopes': {u'4': None, u'6': None}, u'binding:vif_type': u'ovs',
u'mac_address': u'fa:16:3e:2e:2f:58', u'project_id': u'', u'status': u'ACTIVE',
u'subnets': [{u'dns_nameservers': [], u'ipv6_ra_mode': None, u'gateway_ip': u'17
2.24.4.1', u'cidr': u'172.24.4.0/24', u'id':
u'e8cbec96-2ea4-43d5-a717-93b03231d393', u'subnetpool_id': None},
{u'dns_nameservers': [], u'ipv6_ra_mode': None, u'gateway_ip': u'2001:db8::2',
u'cidr': u'2001:db8::/64', u'id': u'68fc0073-619a-43ca-be62-569842366e48',
u'subnetpool_id': None}], u'binding:host_id': u'ip6-devstack-43',
u'description': u'', u'device_id': u'0269742e-56e5-468c-974a-859bb1966a62',
u'name': u'', u'admin_state_up': True, u'network_id':
u'8da945b9-8ac2-4d1b-840f-094dbd794500', u'tenant_id': u'', u'created_at':
u'2016-11-03T15:03:22Z', u'mtu': 1500, u'extra_subnets': []}),
interface(qg-95b57ead-f4),
ns(qrouter-0269742e-56e5-468c-974a-859bb1966a62)^[[00m ^[[00;33mfrom
(pid=28145) _external_gateway_added
/opt/stack/neutron/neutron/agent/l3/router_info.py:632^[[00m
......
2016-11-03 11:03:38.513 DEBUG neutron.agent.linux.utils [-] Running command
(rootwrap daemon): ['ip', 'netns', 'exec',
'qrouter-0269742e-56e5-468c-974a-859bb1966a62', 'ip', '-6', 'addr', 'del',
'fe80::f816:3eff:fecc:7a22/64', 'dev', 'qg-95b57ead-f4'] from (pid=28145)
execute_rootwrap_daemon /opt/stack/neutron/neutron/agent/linux/utils.py:100
the above log took place when the gw_port was added the second time
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