Hi Neutrons, I met this situation once in the release Liberty. Here is the thing. When the create_port_chain() is called, (@networking-sfc/networking_sfc/services/sfc/drivers/ovs/driver.py) it goes the following code path -> _thread_update_path_nodes() ->_update_path_node_flowrules() ->_update_path_node_port_flowrules() ->_build_portchain_flowrule_body() ->_update_path_node_next_hops() ->_get_port_subnet_gw_info_by_port_id ->_get_port_subnet_gw_info() raise exc.SfcNoSubnetGateway if you didn't give the network a router, it raises SfcNoSubnetGateway . And then back to the plugin.py: create_port_chain(), cache the exception sfc_exc.SfcDriverError as e In this exception, there is a delete_port_chain() method. But due to the synchronization problem between DB and ovs-bridge, it will delete failure. I hope this info. could help anyone who uses a liberty version. Next time, don't forget giving a router before creating a port chain.
I don't see this code path in the master branch. It may be better in mitaka. Thanks Vincent 2016-08-31 2:19 GMT+08:00 Cathy Zhang <cathy.h.zh...@huawei.com>: > Hi Alioune, > > > > It is weird that when you create a port chain, you get a “chain delete > failed” error message. > > We never had this problem. Chain deletion is only involved when you do > “delete chain” or “update chain”. > > Not sure which networking code file combination you are using or whether > it is because your system is not properly cleaned up or not properly > installed. > > We are going to release the networking-sfc mitaka version soon. > > I would suggest that you wait a little bit and then use the official > released mitaka version and reinstall the feature on your system. > > > > Thanks, > > Cathy > > > > *From:* Alioune [mailto:baliou...@gmail.com] > *Sent:* Tuesday, August 30, 2016 8:03 AM > *To:* OpenStack Development Mailing List (not for usage questions) > *Cc:* Cathy Zhang; Mohan Kumar; Henry Fourie > *Subject:* Re: [openstack-dev][neutron][networking-sfc] Unable to create > openstack SFC > > > > Hi, > > Have you received my previous email ? > > > > Regards, > > > > On 15 August 2016 at 13:39, Alioune <baliou...@gmail.com> wrote: > > Hi all, > > I'm trying to launch Openstack SFC as explained in[1] by creating 2 SFs, 1 > Web Server (DST) and the DHCP namespace as the SRC. > > I've installed OVS (Open vSwitch) 2.3.90 with Linux kernel 3.13.0-62 and > the neutron L2-agent runs correctly. > > I followed the process by creating classifier, port pairs and port_group > but I got a wrong message "delete_port_chain failed." when creating > port_chain [2] > > I tried to create the neutron ports with and without the option > "--no-security-groups" then tcpdpump on SFs tap interfaces but the ICMP > packets don't go through the SFs. > > > > Can anyone advice to fix? that ? > > What's your channel on IRC ? > > > > Regards, > > > > > > [1] https://wiki.openstack.org/wiki/Neutron/ServiceInsertionAndChaining > > [2] > > vagrant@ubuntu:~/openstack_sfc$ ./08-os_create_port_chain.sh > > delete_port_chain failed. > > vagrant@ubuntu:~/openstack_sfc$ cat 08-os_create_port_chain.sh > > #!/bin/bash > > > > neutron port-chain-create --port-pair-group PG1 --port-pair-group PG2 > --flow-classifier FC1 PC1 > > > > [3] Output OVS Flows > > > > vagrant@ubuntu:~$ sudo ovs-ofctl dump-flows br-tun -O OpenFlow13 > > OFPST_FLOW reply (OF1.3) (xid=0x2): > > cookie=0xbc2e9105125301dc, duration=9615.385s, table=0, n_packets=146, > n_bytes=11534, priority=1,in_port=1 actions=resubmit(,2) > > cookie=0xbc2e9105125301dc, duration=9615.382s, table=0, n_packets=0, > n_bytes=0, priority=0 actions=drop > > cookie=0xbc2e9105125301dc, duration=9615.382s, table=2, n_packets=5, > n_bytes=490, priority=0,dl_dst=00:00:00:00:00:00/01:00:00:00:00:00 > actions=resubmit(,20) > > cookie=0xbc2e9105125301dc, duration=9615.381s, table=2, n_packets=141, > n_bytes=11044, priority=0,dl_dst=01:00:00:00:00:00/01:00:00:00:00:00 > actions=resubmit(,22) > > cookie=0xbc2e9105125301dc, duration=9615.380s, table=3, n_packets=0, > n_bytes=0, priority=0 actions=drop > > cookie=0xbc2e9105125301dc, duration=9615.380s, table=4, n_packets=0, > n_bytes=0, priority=0 actions=drop > > cookie=0xbc2e9105125301dc, duration=8617.106s, table=4, n_packets=0, > n_bytes=0, priority=1,tun_id=0x40e actions=push_vlan:0x8100,set_ > field:4097->vlan_vid,resubmit(,10) > > cookie=0xbc2e9105125301dc, duration=9615.379s, table=6, n_packets=0, > n_bytes=0, priority=0 actions=drop > > cookie=0xbc2e9105125301dc, duration=9615.379s, table=10, n_packets=0, > n_bytes=0, priority=1 actions=learn(table=20,hard_ > timeout=300,priority=1,cookie=0xbc2e9105125301dc,NXM_OF_ > VLAN_TCI[0..11],NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[],load:0- > >NXM_OF_VLAN_TCI[],load:NXM_NX_TUN_ID[]->NXM_NX_TUN_ID[], > output:NXM_OF_IN_PORT[]),output:1 > > cookie=0xbc2e9105125301dc, duration=9615.378s, table=20, n_packets=5, > n_bytes=490, priority=0 actions=resubmit(,22) > > cookie=0xbc2e9105125301dc, duration=9615.342s, table=22, n_packets=146, > n_bytes=11534, priority=0 actions=drop > > vagrant@ubuntu:~$ sudo ovs-ofctl dump-flows br-int -O OpenFlow13 > > OFPST_FLOW reply (OF1.3) (xid=0x2): > > cookie=0xbc2e9105125301dc, duration=6712.090s, table=0, n_packets=0, > n_bytes=0, priority=10,icmp6,in_port=7,icmp_type=136 actions=resubmit(,24) > > cookie=0xbc2e9105125301dc, duration=6709.623s, table=0, n_packets=0, > n_bytes=0, priority=10,icmp6,in_port=8,icmp_type=136 actions=resubmit(,24) > > cookie=0xbc2e9105125301dc, duration=6555.755s, table=0, n_packets=0, > n_bytes=0, priority=10,icmp6,in_port=10,icmp_type=136 > actions=resubmit(,24) > > cookie=0xbc2e9105125301dc, duration=6559.596s, table=0, n_packets=0, > n_bytes=0, priority=10,icmp6,in_port=9,icmp_type=136 actions=resubmit(,24) > > cookie=0xbc2e9105125301dc, duration=6461.028s, table=0, n_packets=0, > n_bytes=0, priority=10,icmp6,in_port=11,icmp_type=136 > actions=resubmit(,24) > > cookie=0xbc2e9105125301dc, duration=6712.071s, table=0, n_packets=13, > n_bytes=546, priority=10,arp,in_port=7 actions=resubmit(,24) > > cookie=0xbc2e9105125301dc, duration=6709.602s, table=0, n_packets=0, > n_bytes=0, priority=10,arp,in_port=8 actions=resubmit(,24) > > cookie=0xbc2e9105125301dc, duration=6555.727s, table=0, n_packets=0, > n_bytes=0, priority=10,arp,in_port=10 actions=resubmit(,24) > > cookie=0xbc2e9105125301dc, duration=6559.574s, table=0, n_packets=12, > n_bytes=504, priority=10,arp,in_port=9 actions=resubmit(,24) > > cookie=0xbc2e9105125301dc, duration=6461.005s, table=0, n_packets=15, > n_bytes=630, priority=10,arp,in_port=11 actions=resubmit(,24) > > cookie=0xbc2e9105125301dc, duration=9620.388s, table=0, n_packets=514, > n_bytes=49656, priority=0 actions=NORMAL > > cookie=0xbc2e9105125301dc, duration=9619.277s, table=0, n_packets=0, > n_bytes=0, priority=20,mpls actions=resubmit(,10) > > cookie=0xbc2e9105125301dc, duration=6712.111s, table=0, n_packets=25, > n_bytes=2674, priority=9,in_port=7 actions=resubmit(,25) > > cookie=0xbc2e9105125301dc, duration=6559.621s, table=0, n_packets=24, > n_bytes=2576, priority=9,in_port=9 actions=resubmit(,25) > > cookie=0xbc2e9105125301dc, duration=6555.777s, table=0, n_packets=2, > n_bytes=140, priority=9,in_port=10 actions=resubmit(,25) > > cookie=0xbc2e9105125301dc, duration=6461.082s, table=0, n_packets=47, > n_bytes=4830, priority=9,in_port=11 actions=resubmit(,25) > > cookie=0xbc2e9105125301dc, duration=6709.646s, table=0, n_packets=3, > n_bytes=230, priority=9,in_port=8 actions=resubmit(,25) > > cookie=0xbc2e9105125301dc, duration=9619.265s, table=10, n_packets=0, > n_bytes=0, priority=0 actions=drop > > cookie=0xbc2e9105125301dc, duration=9620.378s, table=23, n_packets=0, > n_bytes=0, priority=0 actions=drop > > cookie=0xbc2e9105125301dc, duration=9620.368s, table=24, n_packets=0, > n_bytes=0, priority=0 actions=drop > > cookie=0xbc2e9105125301dc, duration=6709.633s, table=24, n_packets=0, > n_bytes=0, > priority=2,icmp6,in_port=8,icmp_type=136,nd_target=fe80::f816:3eff:fe2a:fe > actions=NORMAL > > cookie=0xbc2e9105125301dc, duration=6712.101s, table=24, n_packets=0, > n_bytes=0, > priority=2,icmp6,in_port=7,icmp_type=136,nd_target=fe80::f816:3eff:fee7:1362 > actions=NORMAL > > cookie=0xbc2e9105125301dc, duration=6559.607s, table=24, n_packets=0, > n_bytes=0, > priority=2,icmp6,in_port=9,icmp_type=136,nd_target=fe80::f816:3eff:fe91:95ee > actions=NORMAL > > cookie=0xbc2e9105125301dc, duration=6555.766s, table=24, n_packets=0, > n_bytes=0, > priority=2,icmp6,in_port=10,icmp_type=136,nd_target=fe80::f816:3eff:fe76:d998 > actions=NORMAL > > cookie=0xbc2e9105125301dc, duration=6461.055s, table=24, n_packets=0, > n_bytes=0, > priority=2,icmp6,in_port=11,icmp_type=136,nd_target=fe80::f816:3eff:fe5e:ed96 > actions=NORMAL > > cookie=0xbc2e9105125301dc, duration=6709.611s, table=24, n_packets=0, > n_bytes=0, priority=2,arp,in_port=8,arp_spa=55.55.55.12 > actions=resubmit(,25) > > cookie=0xbc2e9105125301dc, duration=6555.741s, table=24, n_packets=0, > n_bytes=0, priority=2,arp,in_port=10,arp_spa=55.55.55.14 > actions=resubmit(,25) > > cookie=0xbc2e9105125301dc, duration=6712.080s, table=24, n_packets=13, > n_bytes=546, priority=2,arp,in_port=7,arp_spa=55.55.55.11 > actions=resubmit(,25) > > cookie=0xbc2e9105125301dc, duration=6559.584s, table=24, n_packets=12, > n_bytes=504, priority=2,arp,in_port=9,arp_spa=55.55.55.13 > actions=resubmit(,25) > > cookie=0xbc2e9105125301dc, duration=6461.015s, table=24, n_packets=15, > n_bytes=630, priority=2,arp,in_port=11,arp_spa=55.55.55.15 > actions=resubmit(,25) > > cookie=0xbc2e9105125301dc, duration=6709.714s, table=25, n_packets=0, > n_bytes=0, priority=2,in_port=8,dl_src=fa:16:3e:2a:00:fe actions=NORMAL > > cookie=0xbc2e9105125301dc, duration=6559.641s, table=25, n_packets=34, > n_bytes=2940, priority=2,in_port=9,dl_src=fa:16:3e:91:95:ee actions=NORMAL > > cookie=0xbc2e9105125301dc, duration=6461.117s, table=25, n_packets=60, > n_bytes=5320, priority=2,in_port=11,dl_src=fa:16:3e:5e:ed:96 > actions=NORMAL > > cookie=0xbc2e9105125301dc, duration=6712.130s, table=25, n_packets=36, > n_bytes=3080, priority=2,in_port=7,dl_src=fa:16:3e:e7:13:62 actions=NORMAL > > cookie=0xbc2e9105125301dc, duration=6555.801s, table=25, n_packets=0, > n_bytes=0, priority=2,in_port=10,dl_src=fa:16:3e:76:d9:98 actions=NORMAL > > > > > > __________________________________________________________________________ > OpenStack Development Mailing List (not for usage questions) > Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev > >
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