We are using kolla/kolla-ansible to deploy openstack.
Used configuration is ovs + vxlan + old (Opendaylight)

Opendaylight needs to have IP address assigned to br-ex bridge to enable 
connectivity via floatingIP to VMs.
Ovs is running in docker container.
After deployment ovs container is up and running and br-ex is in state DOWN
ip addr show br-ex
12: br-ex: <BROADCAST,MULTICAST> mtu 1500 qdisc noqueue state DOWN qlen 1000
    link/ether 68:05:ca:32:62:93 brd ff:ff:ff:ff:ff:ff
Then we assign IP and set it UP

ip addr show br-ex
12: br-ex: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state 
UNKNOWN qlen 1000
    link/ether 68:05:ca:3a:19:33 brd ff:ff:ff:ff:ff:ff
    inet 10.0.2.16/24 scope global br-ex
       valid_lft forever preferred_lft forever
    inet6 fe80::6a05:caff:fe3a:1933/64 scope link
       valid_lft forever preferred_lft forever

Then ovs container is restarted
docker restart openvswitch-vswitchd

Which cause ovs-vswitchd crash.

Expected behavior is that ovs-vswitchd starts correctly.


Running command: 'start-ovs'
/usr/local/bin/start-ovs: line 8:    22 Segmentation fault      (core dumped) 
/usr/sbin/ovs-vswitchd unix:/run/openvswitch/db.sock -vconsole:emer 
-vsyslog:err -vfile:info --mlockall 
--log-file=/var/log/kolla/openvswitch/ovs-vswitchd.log


Log:
2017-08-09T14:13:58.536Z|00001|vlog|INFO|opened log file 
/var/log/kolla/openvswitch/ovs-vswitchd.log
2017-08-09T14:13:58.540Z|00002|ovs_numa|INFO|Discovered 36 CPU cores on NUMA 
node 0
2017-08-09T14:13:58.540Z|00003|ovs_numa|INFO|Discovered 36 CPU cores on NUMA 
node 1
2017-08-09T14:13:58.540Z|00004|ovs_numa|INFO|Discovered 2 NUMA nodes and 72 CPU 
cores
2017-08-09T14:13:58.540Z|00005|reconnect|INFO|unix:/run/openvswitch/db.sock: 
connecting...
2017-08-09T14:13:58.540Z|00006|reconnect|INFO|unix:/run/openvswitch/db.sock: 
connected
2017-08-09T14:13:58.543Z|00007|dpdk|INFO|DPDK Disabled - Use 
other_config:dpdk-init to enable
2017-08-09T14:13:58.548Z|00008|ofproto_dpif|INFO|system@ovs-system: Datapath 
supports recirculation
2017-08-09T14:13:58.548Z|00009|ofproto_dpif|INFO|system@ovs-system: VLAN header 
stack length probed as 1
2017-08-09T14:13:58.548Z|00010|ofproto_dpif|INFO|system@ovs-system: MPLS label 
stack length probed as 1
2017-08-09T14:13:58.548Z|00011|ofproto_dpif|INFO|system@ovs-system: Datapath 
does not support truncate action
2017-08-09T14:13:58.548Z|00012|ofproto_dpif|INFO|system@ovs-system: Datapath 
supports unique flow ids
2017-08-09T14:13:58.548Z|00013|ofproto_dpif|INFO|system@ovs-system: Datapath 
does not support clone action
2017-08-09T14:13:58.548Z|00014|ofproto_dpif|INFO|system@ovs-system: Max sample 
nesting level probed as 3
2017-08-09T14:13:58.548Z|00015|ofproto_dpif|INFO|system@ovs-system: Datapath 
does not support eventmask in conntrack action
2017-08-09T14:13:58.548Z|00016|ofproto_dpif|INFO|system@ovs-system: Datapath 
supports ct_state
2017-08-09T14:13:58.548Z|00017|ofproto_dpif|INFO|system@ovs-system: Datapath 
supports ct_zone
2017-08-09T14:13:58.548Z|00018|ofproto_dpif|INFO|system@ovs-system: Datapath 
supports ct_mark
2017-08-09T14:13:58.548Z|00019|ofproto_dpif|INFO|system@ovs-system: Datapath 
supports ct_label
2017-08-09T14:13:58.548Z|00020|ofproto_dpif|INFO|system@ovs-system: Datapath 
supports ct_state_nat
2017-08-09T14:13:58.548Z|00021|ofproto_dpif|INFO|system@ovs-system: Datapath 
does not support ct_orig_tuple
2017-08-09T14:13:58.786Z|00001|ofproto_dpif_upcall(handler1)|INFO|received 
packet on unassociated datapath port 0
2017-08-09T14:13:58.786Z|00022|ofproto|WARN|br-ex: ignoring port br-ex (65535) 
because netdev br-ex cannot be opened (File exists)
2017-08-09T14:13:58.786Z|00023|bridge|INFO|bridge br-ex: added interface 
ens785f3 on port 1
2017-08-09T14:13:58.786Z|00024|bridge|WARN|could not open network device br-ex 
(File exists)
2017-08-09T14:13:58.786Z|00025|bridge|INFO|bridge br-ex: added interface 
br-ex-int-patch on port 2
2017-08-09T14:13:58.786Z|00026|bridge|INFO|bridge br-int: added interface 
br-int on port 65534
2017-08-09T14:13:58.786Z|00027|bridge|INFO|bridge br-int: added interface 
br-ex-patch on port 1
2017-08-09T14:13:58.786Z|00028|bridge|INFO|bridge br-ex: using datapath ID 
00006805ca326293
2017-08-09T14:13:58.787Z|00029|in_band|ERR|br-ex: failed to initialize in-band 
control: cannot open datapath local port br-ex (File exists)



ovs-vswitchd (Open vSwitch) 2.7.90

Built from source:
  OVS_BRANCH: bf090264e68d160d0ae70ebc93d59bc09d34cc8b
  OVS_REPO: http://github.com/openvswitch/ovs

cat /proc/version
Linux version 3.10.0-514.el7.x86_64 (buil...@kbuilder.dev.centos.org) (gcc 
version 4.8.5 20150623 (Red Hat 4.8.5-11) (GCC) ) #1 SMP Tue Nov 22 16:42:41 
UTC 2016
Centos 7.3


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