[Starlingx-discuss] [Starlingx-disscuss][ovs-dpdk] Reboot instance with physical pci-passthrough NIC causes OVS restart

张鲲鹏 zhang.kunpeng at 99cloud.net
Mon Jul 22 02:27:19 UTC 2019


Hi Chenjie,
I have attached those logs last email, I don’t know why you didn’t get them. I will attach it(logs.tar) again, if you cannot find it, tell me in time.


Thanks
Kunpeng

> On Jul 19, 2019, at 16:17, Xu, Chenjie <chenjie.xu at intel.com> wrote:
> 
> Hi Kunpeng,
> From the below logs, we can find that
> 1.      ovs agent detects that the OVS is dead.
> 2.      After OVS has been restarted, ovs agent tries to reset bridges and recover ports.
> 2019-07-19 02:04:23.188 243655 WARNING neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent [req-8c7be001-d68e-4d45-929e-50017d044bb0 - - - - -] OVS is dead. OVSNeutronAgent will keep running and checking OVS status periodically. <>
> 2019-07-19 02:04:23.401 186476 INFO eventlet.wsgi.server [req-fb780aa9-92a7-4cee-8195-fa34b5d7b0e0 2798eb7d8ca94c3eb4c134eb47bca7ea cea798d27ac44ca8b871877fd2adfeea default - -] 127.168.204.3,127.168.204.3 "GET /v1/alarms/summary HTTP/1.1" status: 200  len: 306 time: 0.0467389
> 2019-07-19 02:04:24.190 243655 WARNING neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent [req-8c7be001-d68e-4d45-929e-50017d044bb0 - - - - -] OVS is restarted. OVSNeutronAgent will reset bridges and recover ports.
>  
> Could you please attach the below logs?
> /var/log/openvswitch/ovs-vswitchd.log
> /var/log/openvswitch/ovsdb-server.log
> /var/log/syslog
> neutron log (the log file is specified in /etc/neutron/neutron.conf)
>  
> Best Regards,
> Xu, Chenjie
>  <>From: 张鲲鹏 [mailto:zhang.kunpeng at 99cloud.net] 
> Sent: Friday, July 19, 2019 10:21 AM
> To: Xu, Chenjie <chenjie.xu at intel.com>
> Cc: starlingx-discuss at lists.starlingx.io
> Subject: Re: [Starlingx-discuss] [Starlingx-disscuss][ovs-dpdk] Reboot instance with physical pci-passthrough NIC causes OVS restart
>  
> Hi Chenjie,
>  
> This is the logs. At UTC 2019:02:04 I restarted the VM. In openstack.log I found some error messages, I don’t know if it’s  relevant.
>  
> 2019-07-19 02:04:16.141 186477 INFO eventlet.wsgi.server [req-6600ca74-1f93-4e54-88c1-35f964f1e055 2798eb7d8ca94c3eb4c134eb47bca7ea cea798d27ac44ca8b871877fd2adfeea default - -] 127.168.204.3,127.168.204.3 "GET /v1/alarms/summary HTTP/1.1" status: 200  len: 306 time: 0.0178909
> 2019-07-19 02:04:21.077 243655 ERROR neutron.agent.linux.async_process [-] Error received from [ovsdb-client monitor tcp:127.0.0.1:6639 Interface name,ofport,external_ids --format=json]: ovsdb-client: tcp:127.0.0.1:6639: receive failed (End of file)
> 2019-07-19 02:04:21.077 243655 ERROR neutron.agent.linux.async_process [-] Process [ovsdb-client monitor tcp:127.0.0.1:6639 Interface name,ofport,external_ids --format=json] dies due to the error: ovsdb-client: tcp:127.0.0.1:6639: receive failed (End of file)
> 2019-07-19 02:04:22.077 243655 WARNING ovsdbapp.backend.ovs_idl.vlog [-] tcp:127.0.0.1:6639: send error: Connection refused
> 2019-07-19 02:04:22.079 243655 WARNING ovsdbapp.backend.ovs_idl.vlog [-] tcp:127.0.0.1:6639: connection dropped (Connection refused)
> 2019-07-19 02:04:22.089 243737 WARNING ovsdbapp.backend.ovs_idl.vlog [-] tcp:127.0.0.1:6639: send error: Connection refused
> 2019-07-19 02:04:22.090 243737 WARNING ovsdbapp.backend.ovs_idl.vlog [-] tcp:127.0.0.1:6639: connection dropped (Connection refused)
> 2019-07-19 02:04:23.171 243655 ERROR neutron.plugins.ml2.drivers.openvswitch.agent.openflow.native.ofswitch [req-8c7be001-d68e-4d45-929e-50017d044bb0 - - - - -] ofctl request version=0x4,msg_type=0x12,msg_len=0x38,xid=0xb04757ee,OFPFlowStatsRequest(cookie=0,cookie_mask=0,flags=0,match=OFPMatch(oxm_fields={}),out_group=4294967295,out_port=4294967295,table_id=23,type=1) timed out: Timeout: 10 seconds
> 2019-07-19 02:04:23.171 243655 ERROR neutron.plugins.ml2.drivers.openvswitch.agent.openflow.native.br_int [req-8c7be001-d68e-4d45-929e-50017d044bb0 - - - - -] Failed to communicate with the switch: RuntimeError: ofctl request version=0x4,msg_type=0x12,msg_len=0x38,xid=0xb04757ee,OFPFlowStatsRequest(cookie=0,cookie_mask=0,flags=0,match=OFPMatch(oxm_fields={}),out_group=4294967295,out_port=4294967295,table_id=23,type=1) timed out
> 2019-07-19 02:04:23.171 243655 ERROR neutron.plugins.ml2.drivers.openvswitch.agent.openflow.native.br_int Traceback (most recent call last):
> 2019-07-19 02:04:23.171 243655 ERROR neutron.plugins.ml2.drivers.openvswitch.agent.openflow.native.br_int   File "/usr/lib/python2.7/site-packages/neutron/plugins/ml2/drivers/openvswitch/agent/openflow/native/br_int.py", line 52, in check_canary_table
> 2019-07-19 02:04:23.171 243655 ERROR neutron.plugins.ml2.drivers.openvswitch.agent.openflow.native.br_int     flows = self.dump_flows(constants.CANARY_TABLE)
> 2019-07-19 02:04:23.171 243655 ERROR neutron.plugins.ml2.drivers.openvswitch.agent.openflow.native.br_int   File "/usr/lib/python2.7/site-packages/neutron/plugins/ml2/drivers/openvswitch/agent/openflow/native/ofswitch.py", line 147, in dump_flows
> 2019-07-19 02:04:23.171 243655 ERROR neutron.plugins.ml2.drivers.openvswitch.agent.openflow.native.br_int     reply_multi=True)
> 2019-07-19 02:04:23.171 243655 ERROR neutron.plugins.ml2.drivers.openvswitch.agent.openflow.native.br_int   File "/usr/lib/python2.7/site-packages/neutron/plugins/ml2/drivers/openvswitch/agent/openflow/native/ofswitch.py", line 95, in _send_msg
> 2019-07-19 02:04:23.171 243655 ERROR neutron.plugins.ml2.drivers.openvswitch.agent.openflow.native.br_int     raise RuntimeError(m)
> 2019-07-19 02:04:23.171 243655 ERROR neutron.plugins.ml2.drivers.openvswitch.agent.openflow.native.br_int RuntimeError: ofctl request version=0x4,msg_type=0x12,msg_len=0x38,xid=0xb04757ee,OFPFlowStatsRequest(cookie=0,cookie_mask=0,flags=0,match=OFPMatch(oxm_fields={}),out_group=4294967295,out_port=4294967295,table_id=23,type=1) timed out
> 2019-07-19 02:04:23.171 243655 ERROR neutron.plugins.ml2.drivers.openvswitch.agent.openflow.native.br_int
> 2019-07-19 02:04:23.188 243655 WARNING neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent [req-8c7be001-d68e-4d45-929e-50017d044bb0 - - - - -] OVS is dead. OVSNeutronAgent will keep running and checking OVS status periodically.
> 2019-07-19 02:04:23.401 186476 INFO eventlet.wsgi.server [req-fb780aa9-92a7-4cee-8195-fa34b5d7b0e0 2798eb7d8ca94c3eb4c134eb47bca7ea cea798d27ac44ca8b871877fd2adfeea default - -] 127.168.204.3,127.168.204.3 "GET /v1/alarms/summary HTTP/1.1" status: 200  len: 306 time: 0.0467389
> 2019-07-19 02:04:24.190 243655 WARNING neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent [req-8c7be001-d68e-4d45-929e-50017d044bb0 - - - - -] OVS is restarted. OVSNeutronAgent will reset bridges and recover ports.
> 2019-07-19 02:04:24.242 243655 INFO neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent [req-8c7be001-d68e-4d45-929e-50017d044bb0 - - - - -] Mapping physical network providernet-a to bridge br-phy0
> 2019-07-19 02:04:24.295 243655 INFO neutron.plugins.ml2.drivers.openvswitch.agent.openflow.native.ovs_bridge [req-8c7be001-d68e-4d45-929e-50017d044bb0 - - - - -] Bridge br-phy0 has datapath-ID 0000f8f21e640120
>  
> Kunpeng
> 
> 
> On Jul 19, 2019, at 09:29, Xu, Chenjie <chenjie.xu at intel.com <mailto:chenjie.xu at intel.com>> wrote:
>  
> Hi Kunpeng,
> You can check the bridge and openflows by the following commands:
> ovs-vsctl show
> ovs-ofctl dump-flows br-int <>
> ovs-ofctl dump-flows br-phy0
>  
> The virtual network used by VMs is based on those openflows. And restarting ovs-vswitchd can’t reinstall the openflows. That’s why when the ovs-vswitchd restart, you will lose the connections to VMs.
>  
> I think we need to figure out why ovs-vswitchd is restarted when you restart the VM. Could you please check the below logs to see why ovs-vswitchd is restarted?
>        /var/log/openvswitch/ovs-vswitchd.log
> /var/log/syslog
> neutron log (the log file is specified in /etc/neutron/neutron.conf)
>  
> Best Regards,
> Xu, Chenjie
>  
>  <>From: 张鲲鹏 [mailto:zhang.kunpeng at 99cloud.net <mailto:zhang.kunpeng at 99cloud.net>] 
> Sent: Thursday, July 18, 2019 7:09 PM
> To: Xu, Chenjie <chenjie.xu at intel.com <mailto:chenjie.xu at intel.com>>
> Cc: starlingx-discuss at lists.starlingx.io <mailto:starlingx-discuss at lists.starlingx.io>
> Subject: Re: [Starlingx-discuss] [Starlingx-disscuss][ovs-dpdk] Reboot instance with physical pci-passthrough NIC causes OVS restart
>  
> I also find that when the ovs-vswitchd is restarted, I will lose the connections to VMs.
>  
> Before restart ovs:
>  
> controller-0:/home/wrsroot# ip a
> 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN group default qlen 1000
>     link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
>     inet 127.0.0.1/8 scope host lo
>        valid_lft forever preferred_lft forever
>     inet 127.168.204.3/24 brd 127.168.204.255 scope host lo
>        valid_lft forever preferred_lft forever
>     inet 169.254.202.2/24 scope global lo
>        valid_lft forever preferred_lft forever
>     inet 127.168.204.2/24 scope host secondary lo
>        valid_lft forever preferred_lft forever
>     inet 127.168.204.5/24 scope host secondary lo
>        valid_lft forever preferred_lft forever
>     inet 127.168.204.6/24 scope host secondary lo
>        valid_lft forever preferred_lft forever
>     inet 127.168.204.152/24 scope host secondary lo
>        valid_lft forever preferred_lft forever
>     inet6 ::1/128 scope host
>        valid_lft forever preferred_lft forever
> 3: enp59s0f1: <BROADCAST,MULTICAST> mtu 1500 qdisc mq state DOWN group default qlen 1000
>     link/ether f8:f2:1e:64:01:21 brd ff:ff:ff:ff:ff:ff
> 4: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
>     link/ether 4c:d9:8f:72:fb:63 brd ff:ff:ff:ff:ff:ff
>     inet 172.16.180.154/24 brd 172.16.180.255 scope global eno1
>        valid_lft forever preferred_lft forever
>     inet6 fe80::4ed9:8fff:fe72:fb63/64 scope link
>        valid_lft forever preferred_lft forever
> 5: eno2: <BROADCAST,MULTICAST> mtu 1500 qdisc mq state DOWN group default qlen 1000
>     link/ether 4c:d9:8f:72:fb:64 brd ff:ff:ff:ff:ff:ff
> 6: enp94s0f0: <BROADCAST,MULTICAST> mtu 1500 qdisc mq state DOWN group default qlen 1000
>     link/ether 4c:d9:8f:5e:ab:88 brd ff:ff:ff:ff:ff:ff
> 7: enp94s0f1: <BROADCAST,MULTICAST> mtu 1500 qdisc mq state DOWN group default qlen 1000
>     link/ether 4c:d9:8f:5e:ab:89 brd ff:ff:ff:ff:ff:ff
> 8: enp175s0f0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
>     link/ether f8:f2:1e:64:80:60 brd ff:ff:ff:ff:ff:ff
>     inet6 fe80::faf2:1eff:fe64:8060/64 scope link
>        valid_lft forever preferred_lft forever
> 9: enp175s0f1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
>     link/ether f8:f2:1e:64:80:61 brd ff:ff:ff:ff:ff:ff
>     inet6 fe80::faf2:1eff:fe64:8061/64 scope link
>        valid_lft forever preferred_lft forever
> 10: ovs-netdev: <BROADCAST,PROMISC> mtu 1500 qdisc noop state DOWN group default qlen 1000
>     link/ether 62:34:73:47:50:be brd ff:ff:ff:ff:ff:ff
> 13: br-int: <BROADCAST,PROMISC> mtu 1500 qdisc noop state DOWN group default qlen 1000
>     link/ether c6:91:5d:27:b4:43 brd ff:ff:ff:ff:ff:ff
> 16: br-phy0: <BROADCAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN group default qlen 1000
>     link/ether f8:f2:1e:64:01:20 brd ff:ff:ff:ff:ff:ff
>     inet6 fe80::faf2:1eff:fe64:120/64 scope link
>        valid_lft forever preferred_lft forever
> 17: lldp16ba3755-27: <BROADCAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN group default qlen 1000
>     link/ether 7e:3a:87:a3:98:03 brd ff:ff:ff:ff:ff:ff
>     inet6 fe80::7c3a:87ff:fea3:9803/64 scope link
>        valid_lft forever preferred_lft forever
>  
> After:
>  
> controller-0:/home/wrsroot# systemctl restart ovs-vswitchd
> controller-0:/home/wrsroot# ip a
> 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN group default qlen 1000
>     link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
>     inet 127.0.0.1/8 scope host lo
>        valid_lft forever preferred_lft forever
>     inet 127.168.204.3/24 brd 127.168.204.255 scope host lo
>        valid_lft forever preferred_lft forever
>     inet 169.254.202.2/24 scope global lo
>        valid_lft forever preferred_lft forever
>     inet 127.168.204.2/24 scope host secondary lo
>        valid_lft forever preferred_lft forever
>     inet 127.168.204.5/24 scope host secondary lo
>        valid_lft forever preferred_lft forever
>     inet 127.168.204.6/24 scope host secondary lo
>        valid_lft forever preferred_lft forever
>     inet 127.168.204.152/24 scope host secondary lo
>        valid_lft forever preferred_lft forever
>     inet6 ::1/128 scope host
>        valid_lft forever preferred_lft forever
> 3: enp59s0f1: <BROADCAST,MULTICAST> mtu 1500 qdisc mq state DOWN group default qlen 1000
>     link/ether f8:f2:1e:64:01:21 brd ff:ff:ff:ff:ff:ff
> 4: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
>     link/ether 4c:d9:8f:72:fb:63 brd ff:ff:ff:ff:ff:ff
>     inet 172.16.180.154/24 brd 172.16.180.255 scope global eno1
>        valid_lft forever preferred_lft forever
>     inet6 fe80::4ed9:8fff:fe72:fb63/64 scope link
>        valid_lft forever preferred_lft forever
> 5: eno2: <BROADCAST,MULTICAST> mtu 1500 qdisc mq state DOWN group default qlen 1000
>     link/ether 4c:d9:8f:72:fb:64 brd ff:ff:ff:ff:ff:ff
> 6: enp94s0f0: <BROADCAST,MULTICAST> mtu 1500 qdisc mq state DOWN group default qlen 1000
>     link/ether 4c:d9:8f:5e:ab:88 brd ff:ff:ff:ff:ff:ff
> 7: enp94s0f1: <BROADCAST,MULTICAST> mtu 1500 qdisc mq state DOWN group default qlen 1000
>     link/ether 4c:d9:8f:5e:ab:89 brd ff:ff:ff:ff:ff:ff
> 8: enp175s0f0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
>     link/ether f8:f2:1e:64:80:60 brd ff:ff:ff:ff:ff:ff
>     inet6 fe80::faf2:1eff:fe64:8060/64 scope link
>        valid_lft forever preferred_lft forever
> 9: enp175s0f1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
>     link/ether f8:f2:1e:64:80:61 brd ff:ff:ff:ff:ff:ff
>     inet6 fe80::faf2:1eff:fe64:8061/64 scope link
>        valid_lft forever preferred_lft forever
> 10: ovs-netdev: <BROADCAST,PROMISC> mtu 1500 qdisc noop state DOWN group default qlen 1000
>     link/ether 62:34:73:47:50:be brd ff:ff:ff:ff:ff:ff
> 13: br-int: <BROADCAST,PROMISC> mtu 1500 qdisc noop state DOWN group default qlen 1000
>     link/ether c6:91:5d:27:b4:43 brd ff:ff:ff:ff:ff:ff
> 16: br-phy0: <BROADCAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
>     link/ether f8:f2:1e:64:01:20 brd ff:ff:ff:ff:ff:ff
>     inet6 fe80::faf2:1eff:fe64:120/64 scope link
>        valid_lft forever preferred_lft forever
> 17: lldp16ba3755-27: <BROADCAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
>     link/ether 7e:3a:87:a3:98:03 brd ff:ff:ff:ff:ff:ff
>     inet6 fe80::7c3a:87ff:fea3:9803/64 scope link
>        valid_lft forever preferred_lft forever
> 20: tapfb74713e-cc: <BROADCAST,PROMISC> mtu 1500 qdisc noop state DOWN group default qlen 1000
>     link/ether 0e:2d:36:ee:2d:85 brd ff:ff:ff:ff:ff:ff
> 21: tap1a965902-0b: <BROADCAST,PROMISC> mtu 1500 qdisc noop state DOWN group default qlen 1000
>     link/ether 5e:f6:81:31:54:21 brd ff:ff:ff:ff:ff:ff
>  
> One of the VMs:
>  
> <image001.png>
>  
> 
> On Jul 18, 2019, at 18:09, 张鲲鹏 <zhang.kunpeng at 99cloud.net <mailto:zhang.kunpeng at 99cloud.net>> wrote:
>  
> Hi Xu,Chenjie
>  
> I have tried to create VM with 2 pci_passthrough network ports without DPDK, there was the same problem when I rebooted it.
> Also, it was same when I reboot the VM with 2 SR-IOV VFs.
> Do you have any ideas to debug this problem?
>  
> Thanks 
> Kunpeng  
>  
> 
> On Jul 17, 2019, at 14:59, Xu, Chenjie <chenjie.xu at intel.com <mailto:chenjie.xu at intel.com>> wrote:
>  
> Hi Kunpeng,
> Maybe you can use SR-IOV and passthrough the VF which has similar performance to physical NIC to the VM. And then you can use DPDK inside the VM with the VF.
>  
> Sorry, I don’t have easy way to disable DPDK in stx1.0. The following command is used for stx2.0 which is still in progress:
> system modify --vswitch_type none
>  
> Best Regards,
> Xu, Chenjie
> From: 张鲲鹏 [mailto:zhang.kunpeng at 99cloud.net <mailto:zhang.kunpeng at 99cloud.net>] 
> Sent: Tuesday, July 16, 2019 5:40 PM
> To: Xu, Chenjie <chenjie.xu at intel.com <mailto:chenjie.xu at intel.com>>
> Cc: starlingx-discuss at lists.starlingx.io <mailto:starlingx-discuss at lists.starlingx.io>
> Subject: Re: [Starlingx-discuss] [Starlingx-disscuss][ovs-dpdk] Reboot instance with physical pci-passthrough NIC causes OVS restart
>  
> Hi Chenjie,
>  
> Well, I will try the network topology as you said. But passthrough NIC with DPDK is our customer’s requirement.
> And do you have some easy ways to disable dpdk of openvswitch in stx1.0? 
> I had tried to execute “system modify --vswitch_type none” before “system host-unlock controller-0", but it doesn’t work well.
>  
> Thanks 
> Kunpeng
>  
> On Jul 16, 2019, at 16:49, Xu, Chenjie <chenjie.xu at intel.com <mailto:chenjie.xu at intel.com>> wrote:
>  
> Hi Kunpeng,
> When you reboot the VM with two physical pci-passthrough NICs, ovs-vswtichd is restarted and the interfaces and bridges are down. The virtual networks used by the VMs are based on these interfaces and bridges. So other VMs will lost connections.
>  
> Typically you should not pass through a PCI device which is bound to DPDK to the VM. Are the 2 network ports which is used to passthrough to the VM bound to DPDK? If so, could you please try OVS-DPDK with the following network topology:
> 2 network port without DPDK      >      VM
> 2 network port with DPDK             >      Data Network
> 1 network port without DPDK       >      OAM
>  
> Best Regards,
> Xu, Chenjie
>  
> From: 张鲲鹏 [mailto:zhang.kunpeng at 99cloud.net <mailto:zhang.kunpeng at 99cloud.net>] 
> Sent: Tuesday, July 16, 2019 3:54 PM
> To: starlingx-discuss at lists.starlingx.io <mailto:starlingx-discuss at lists.starlingx.io>
> Subject: [Starlingx-discuss] [Starlingx-disscuss][ovs-dpdk] Reboot instance with physical pci-passthrough NIC causes OVS restart
>  
> Hi guys,
>  
> Recently I got a strange problem in StarlingX. When I reboot one VM with two physical pci-passthrough NICs, then all of VMs cannot be connected. I lost connections with all VMs and also the VMs lost each others. 
>  
> Below is the StarlingX environment.
>  
> 1. stx1.0 version, bootimage[1] 
> 2. Simplex deployment
> 3. 5 Network ports. Only one don’t support DPDK,and it is used to OAM Network. In the rest, two are used to data network, and another two are used to passthrough to a VM.
> 4. The VM was attached two more virtual networks. I have tested the case of attaching one virtual net, it was no problem. 
>  
> When I reboot the VM, something were happened. The interfaces and bridges were down, all the virtual dhcp services were down and ovs-vswitchd was restarted. But when I up the interfaces and dhcp services and reboot the other VMs, I have got the connections with them again.
>  
> It’s ok when to reboot the VM without physical NIC. We think it may be caused by ovs-dpdk, so we stop to use ovs-dpdk and start the ovs manually, the problem was gone.
>  
> I cannot understand the problem, anybody could give me some comments for it? Thanks a lot.
>  
> [1] http://mirror.starlingx.cengn.ca/mirror/starlingx/r2018.10/centos/2018.10.0/outputs/iso/bootimage.iso <http://mirror.starlingx.cengn.ca/mirror/starlingx/r2018.10/centos/2018.10.0/outputs/iso/bootimage.iso>
>  
> Kunpeng
> _______________________________________________
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> http://lists.starlingx.io/cgi-bin/mailman/listinfo/starlingx-discuss <http://lists.starlingx.io/cgi-bin/mailman/listinfo/starlingx-discuss>
>  
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