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Message #61866
[Bug 1668277] [NEW] When enable l2pop, after deleting the DVR port, the associated flow entries still exists.
Public bug reported:
This results in a large number of useless flow entries in the br-tun
flow table, and they will not be aged.
Steps to reproduce:
1. Create a DVR router
neutron router-create Router --distributed True --ha False
2. Create an internal network and a subnet
neutron net-create Network
neutron subnet-create Network 10.0.0.0/24 --name Subnet
3. Set gateway and add subnet to Router
neutron router-gateway-set Router ext-net
neutron router-interface-add Router Subnet
4. Boot an instance in Network
nova boot --image <image_id> --flavor <flavor_id> --nic net_id=<net_id> VM
5. Login into VM using ssh or VNC console, and ping the Router to confirm network connectivity
ping 10.0.0.1
6. Check the MAC of the DVR SNAT port
neutron router-port-list Router
+--------------------------------------+------+-------------------+--------------------------------------------------------------------------------------+
| id | name | mac_address | fixed_ips |
+--------------------------------------+------+-------------------+--------------------------------------------------------------------------------------+
| 1bb7d911-1e25-4168-9cce-dd002798eaa0 | | fa:16:3e:24:85:25 | {"subnet_id": "62c3fd6f-39a9-4e59-aed2-84cf416f46f0", "ip_address": "10.0.0.11"} |
| 658b362c-ab0b-4c20-b574-7798eef2f1dc | | fa:16:3e:2c:91:7a | {"subnet_id": "40819ff3-6844-4e29-afd8-89b0c6b1078f", "ip_address": "172.16.55.134"} |
| 7096d242-58a3-449b-af67-c8c11ca0caa0 | | fa:16:3e:52:9d:4c | {"subnet_id": "62c3fd6f-39a9-4e59-aed2-84cf416f46f0", "ip_address": "10.0.0.1"} |
+--------------------------------------+------+-------------------+--------------------------------------------------------------------------------------+
neutron port-show 1bb7d911-1e25-4168-9cce-dd002798eaa0
+-----------------------+----------------------------------------------------------------------------------+
| Field | Value |
+-----------------------+----------------------------------------------------------------------------------+
| device_owner | network:router_centralized_snat |
| fixed_ips | {"subnet_id": "62c3fd6f-39a9-4e59-aed2-84cf416f46f0", "ip_address": "10.0.0.11"} |
| id | 1bb7d911-1e25-4168-9cce-dd002798eaa0 |
| mac_address | fa:16:3e:24:85:25 |
+-----------------------+----------------------------------------------------------------------------------+
7. Check the flow entries in compute node
sudo ovs-ofctl dump-flows br-tun | grep fa:16:3e:24:85:25
cookie=0x0, duration=18.515s, table=20, n_packets=0, n_bytes=0, hard_timeout=300, idle_age=18, priority=1,vlan_tci=0x0025/0x0fff,dl_dst= fa:16:3e:24:85:25 actions=load:0->NXM_OF_VLAN_TCI[],load:0x10067->NXM_NX_TUN_ID[],output:32
cookie=0x0, duration=18.866s, table=20, n_packets=0, n_bytes=0, idle_age=18, priority=2,dl_vlan=37,dl_dst= fa:16:3e:24:85:25 actions=strip_vlan,set_tunnel:0x10067,output:32
8. Delete the port
neutron router-interface-delete Router Subnet
9. Check the flow entry in compute node again
sudo ovs-ofctl dump-flows br-tun | grep fa:16:3e:24:85:25
cookie=0x0, duration=1733.776s, table=20, n_packets=0, n_bytes=0, hard_timeout=300, idle_age=1733, hard_age=280, priority=1,vlan_tci=0x0025/0x0fff,dl_dst= fa:16:3e:24:85:25 actions=load:0->NXM_OF_VLAN_TCI[],load:0x10067->NXM_NX_TUN_ID[],output:32
cookie=0x0, duration=1734.126s, table=20, n_packets=9, n_bytes=538, idle_age=280, priority=2,dl_vlan=37,dl_dst= fa:16:3e:24:85:25 actions=strip_vlan,set_tunnel:0x10067,output:32
** Affects: neutron
Importance: Undecided
Assignee: Yaohua Yan (sleepdream)
Status: In Progress
** Changed in: neutron
Assignee: (unassigned) => Yaohua Yan (sleepdream)
** Changed in: neutron
Status: New => In Progress
--
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https://bugs.launchpad.net/bugs/1668277
Title:
When enable l2pop, after deleting the DVR port, the associated flow
entries still exists.
Status in neutron:
In Progress
Bug description:
This results in a large number of useless flow entries in the br-tun
flow table, and they will not be aged.
Steps to reproduce:
1. Create a DVR router
neutron router-create Router --distributed True --ha False
2. Create an internal network and a subnet
neutron net-create Network
neutron subnet-create Network 10.0.0.0/24 --name Subnet
3. Set gateway and add subnet to Router
neutron router-gateway-set Router ext-net
neutron router-interface-add Router Subnet
4. Boot an instance in Network
nova boot --image <image_id> --flavor <flavor_id> --nic net_id=<net_id> VM
5. Login into VM using ssh or VNC console, and ping the Router to confirm network connectivity
ping 10.0.0.1
6. Check the MAC of the DVR SNAT port
neutron router-port-list Router
+--------------------------------------+------+-------------------+--------------------------------------------------------------------------------------+
| id | name | mac_address | fixed_ips |
+--------------------------------------+------+-------------------+--------------------------------------------------------------------------------------+
| 1bb7d911-1e25-4168-9cce-dd002798eaa0 | | fa:16:3e:24:85:25 | {"subnet_id": "62c3fd6f-39a9-4e59-aed2-84cf416f46f0", "ip_address": "10.0.0.11"} |
| 658b362c-ab0b-4c20-b574-7798eef2f1dc | | fa:16:3e:2c:91:7a | {"subnet_id": "40819ff3-6844-4e29-afd8-89b0c6b1078f", "ip_address": "172.16.55.134"} |
| 7096d242-58a3-449b-af67-c8c11ca0caa0 | | fa:16:3e:52:9d:4c | {"subnet_id": "62c3fd6f-39a9-4e59-aed2-84cf416f46f0", "ip_address": "10.0.0.1"} |
+--------------------------------------+------+-------------------+--------------------------------------------------------------------------------------+
neutron port-show 1bb7d911-1e25-4168-9cce-dd002798eaa0
+-----------------------+----------------------------------------------------------------------------------+
| Field | Value |
+-----------------------+----------------------------------------------------------------------------------+
| device_owner | network:router_centralized_snat |
| fixed_ips | {"subnet_id": "62c3fd6f-39a9-4e59-aed2-84cf416f46f0", "ip_address": "10.0.0.11"} |
| id | 1bb7d911-1e25-4168-9cce-dd002798eaa0 |
| mac_address | fa:16:3e:24:85:25 |
+-----------------------+----------------------------------------------------------------------------------+
7. Check the flow entries in compute node
sudo ovs-ofctl dump-flows br-tun | grep fa:16:3e:24:85:25
cookie=0x0, duration=18.515s, table=20, n_packets=0, n_bytes=0, hard_timeout=300, idle_age=18, priority=1,vlan_tci=0x0025/0x0fff,dl_dst= fa:16:3e:24:85:25 actions=load:0->NXM_OF_VLAN_TCI[],load:0x10067->NXM_NX_TUN_ID[],output:32
cookie=0x0, duration=18.866s, table=20, n_packets=0, n_bytes=0, idle_age=18, priority=2,dl_vlan=37,dl_dst= fa:16:3e:24:85:25 actions=strip_vlan,set_tunnel:0x10067,output:32
8. Delete the port
neutron router-interface-delete Router Subnet
9. Check the flow entry in compute node again
sudo ovs-ofctl dump-flows br-tun | grep fa:16:3e:24:85:25
cookie=0x0, duration=1733.776s, table=20, n_packets=0, n_bytes=0, hard_timeout=300, idle_age=1733, hard_age=280, priority=1,vlan_tci=0x0025/0x0fff,dl_dst= fa:16:3e:24:85:25 actions=load:0->NXM_OF_VLAN_TCI[],load:0x10067->NXM_NX_TUN_ID[],output:32
cookie=0x0, duration=1734.126s, table=20, n_packets=9, n_bytes=538, idle_age=280, priority=2,dl_vlan=37,dl_dst= fa:16:3e:24:85:25 actions=strip_vlan,set_tunnel:0x10067,output:32
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