Please see the attached logs (with "-v" option).

On Fri, Jul 1, 2016 at 7:06 PM, Ben Pfaff <b...@ovn.org> wrote:

> OK, in that case, can you run the command in circumstances such that it
> hangs, but adding the "-v" option?  That will cause it to print a log of
> debugging messages to stdout.  Give it a couple of seconds, then hit
> control+C and email all of the output that it printed.
>
> Thanks,
>
> Ben.
>
> On Fri, Jul 01, 2016 at 06:35:26PM -0500, Charlie Li wrote:
> > ovs-vsctl: cannot create a bridge named br0 because a bridge named br0
> > already exists
> >
> >
> > On Fri, Jul 1, 2016 at 5:22 PM, Ben Pfaff <b...@ovn.org> wrote:
> >
> > > If you hit control+C and run the ovs-vsctl command again, what happens?
> > >
> > > On Fri, Jul 01, 2016 at 05:06:27PM -0500, Charlie Li wrote:
> > > > I don't think so - "ps -ef" shows the following processes
> > > >
> > > > root      1458     1  0 16:17 ?        00:00:00 ./ovsdb-server
> > > > --remote=punix:/usr/local/var/run/openvswitch/db.sock
> > > --remote=db:Open_vSw
> > > > root      1464     1  0 16:18 ?        00:00:09 ./ovs-vswitchd
> --dpdk -c
> > > > 0x1 -n 4 -- unix:/usr/local/var/run/openvswitch/db.sock --pidfil
> > > > root      1468  1332  0 16:19 pts/0    00:00:00 sudo ./ovs-vsctl
> add-br
> > > br0
> > > > -- set bridge br0 datapath_type=netdev
> > > > root      1469  1468  0 16:19 pts/0    00:00:00 ./ovs-vsctl add-br
> br0 --
> > > > set bridge br0 datapath_type=netdev
> > > >
> > > >
> > > > On Fri, Jul 1, 2016 at 4:38 PM, Ben Pfaff <b...@ovn.org> wrote:
> > > >
> > > > > Does ovs-vswitchd die when you run that?
> > > > >
> > > > > On Fri, Jul 01, 2016 at 04:24:15PM -0500, Charlie Li wrote:
> > > > > > If I don't re-build DPDK and OVS, the following command will hang
> > > > > >
> > > > > > sudo ./ovs-vsctl add-br br0 -- set bridge br0
> datapath_type=netdev
> > > > > >
> > > > > > Looks like Bala reported the same issue (not sure if it is
> caused by
> > > the
> > > > > > same reason - not re-building OVS/DPDK)
> > > > > >
> > > > > > On Fri, Jul 1, 2016 at 3:21 PM, Ben Pfaff <b...@ovn.org> wrote:
> > > > > >
> > > > > > > On Fri, Jul 01, 2016 at 01:57:38PM -0500, Charlie Li wrote:
> > > > > > > > By now I am successful in running openvswitch-2.5.0 with
> > > DPDK-2.2.0
> > > > > by
> > > > > > > > following "INSTALL.DPDK.md <http://install.dpdk.md/>".
> > > > > > > >
> > > > > > > > I understand that I have to build DPDK and OVS for the very
> first
> > > > > time.
> > > > > > > >
> > > > > > > > # Build DPDK
> > > > > > > > cd $DPDK_DIR
> > > > > > > > make install T=x86_64-native-linuxapp-gcc
> > > > > > > >
> > > > > > > > # Configure & build OVS
> > > > > > > > cd $OVS_DIR
> > > > > > > > ./boot.sh
> > > > > > > > ./configure --with-dpdk=$DPDK_BUILD/
> > > > > > > > make CFLAGS='-O3 -march=native'
> > > > > > > >
> > > > > > > > But why do I have to build DPDK and OVS every time to run
> > > OVS-DPDK?
> > > > > > >
> > > > > > > You don't.  This doesn't make any sense.
> > > > > > >
> > > > > > > If you don't re-build OVS after you reboot, what happens?
> > > > > > >
> > > > >
> > >
>
$ sudo ./ovs-vsctl -v add-br br0 -- set bridge br0 datapath_type=netdev
2016-07-02T14:18:06Z|00002|reconnect|DBG|unix:/usr/local/var/run/openvswitch/db.sock:
 entering BACKOFF
2016-07-02T14:18:06Z|00003|hmap|DBG|lib/shash.c:112: 6 nodes in bucket (32 
nodes, 16 buckets)
2016-07-02T14:18:06Z|00004|reconnect|INFO|unix:/usr/local/var/run/openvswitch/db.sock:
 connecting...
2016-07-02T14:18:06Z|00005|reconnect|DBG|unix:/usr/local/var/run/openvswitch/db.sock:
 entering CONNECTING
2016-07-02T14:18:06Z|00006|poll_loop|DBG|wakeup due to [POLLOUT] on fd 4 
(<->/usr/local/var/run/openvswitch/db.sock) at lib/stream-fd.c:151
2016-07-02T14:18:06Z|00007|reconnect|INFO|unix:/usr/local/var/run/openvswitch/db.sock:
 connected
2016-07-02T14:18:06Z|00008|reconnect|DBG|unix:/usr/local/var/run/openvswitch/db.sock:
 entering ACTIVE
2016-07-02T14:18:06Z|00009|jsonrpc|DBG|unix:/usr/local/var/run/openvswitch/db.sock:
 send request, method="get_schema", params=["Open_vSwitch"], id=0
2016-07-02T14:18:06Z|00010|poll_loop|DBG|wakeup due to [POLLIN] on fd 4 
(<->/usr/local/var/run/openvswitch/db.sock) at lib/stream-fd.c:155
2016-07-02T14:18:06Z|00011|hmap|DBG|lib/shash.c:112: 6 nodes in bucket (8 
nodes, 4 buckets)
2016-07-02T14:18:06Z|00012|hmap|DBG|lib/shash.c:112: 6 nodes in bucket (32 
nodes, 16 buckets)
2016-07-02T14:18:06Z|00013|jsonrpc|DBG|unix:/usr/local/var/run/openvswitch/db.sock:
 received reply, result={"name":"Open_vSwitch","tables":{"QoS":{"isR            
   
oot":true,"columns":{"external_ids":{"type":{"max":"unlimited","value":"string","key":"string","min":0}},"type":{"type":"string"},"queues":{"type":{"ma
               
x":"unlimited","value":{"type":"uuid","refTable":"Queue"},"key":{"minInteger":0,"maxInteger":4294967295,"type":"integer"},"min":0}},"other_config":{"ty
               
pe":{"max":"unlimited","value":"string","key":"string","min":0}}}},"Queue":{"isRoot":true,"columns":{"external_ids":{"type":{"max":"unlimited","value":
               
"string","key":"string","min":0}},"dscp":{"type":{"key":{"minInteger":0,"maxInteger":63,"type":"integer"},"min":0}},"other_config":{"type":{"max":"unli
               
mited","value":"string","key":"string","min":0}}}},"Open_vSwitch":{"maxRows":1,"isRoot":true,"columns":{"datapath_types":{"type":{"max":"unlimited","mi
               
n":0,"key":"string"}},"statistics":{"type":{"max":"unlimited","value":"string","key":"string","min":0},"ephemeral":true},"external_ids":{"type":{"max":
               
"unlimited","value":"string","key":"string","min":0}},"cur_cfg":{"type":"integer"},"db_version":{"type":{"key":"string","min":0}},"other_config":{"type
               
":{"max":"unlimited","value":"string","key":"string","min":0}},"next_cfg":{"type":"integer"},"system_type":{"type":{"key":"string","min":0}},"system_ve
               
rsion":{"type":{"key":"string","min":0}},"ovs_version":{"type":{"key":"string","min":0}},"bridges":{"type":{"max":"unlimited","min":0,"key":{"type":"uu
               
id","refTable":"Bridge"}}},"ssl":{"type":{"key":{"type":"uuid","refTable":"SSL"},"min":0}},"manager_options":{"type":{"max":"unlimited","min":0,"key":{
               
"type":"uuid","refTable":"Manager"}}},"iface_types":{"type":{"max":"unlimited","min":0,"key":"string"}}}},"Flow_Sample_Collector_Set":{"isRoot":true,"c
               
olumns":{"external_ids":{"type":{"max":"unlimited","value":"string","key":"string","min":0}},"bridge":{"type":{"key":{"type":"uuid","refTable":"Bridge"
               
}}},"ipfix":{"type":{"key":{"type":"uuid","refTable":"IPFIX"},"min":0}},"id":{"type":{"key":{"minInteger":0,"maxInteger":4294967295,"type":"integer"}}}
               
},"indexes":[["id","bridge"]]},"Bridge":{"columns":{"rstp_status":{"type":{"max":"unlimited","value":"string","key":"string","min":0},"ephemeral":true}
               
,"datapath_version":{"type":"string"},"flow_tables":{"type":{"max":"unlimited","value":{"type":"uuid","refTable":"Flow_Table"},"key":{"minInteger":0,"m
               
axInteger":254,"type":"integer"},"min":0}},"protocols":{"type":{"max":"unlimited","min":0,"key":{"type":"string","enum":["set",["OpenFlow10","OpenFlow1
               
1","OpenFlow12","OpenFlow13","OpenFlow14","OpenFlow15"]]}}},"auto_attach":{"type":{"key":{"type":"uuid","refTable":"AutoAttach"},"min":0}},"mcast_snoop
               
ing_enable":{"type":"boolean"},"flood_vlans":{"type":{"max":4096,"min":0,"key":{"minInteger":0,"maxInteger":4095,"type":"integer"}}},"stp_enable":{"typ
               
e":"boolean"},"name":{"type":"string","mutable":false},"sflow":{"type":{"key":{"type":"uuid","refTable":"sFlow"},"min":0}},"ports":{"type":{"max":"unli
               
mited","min":0,"key":{"type":"uuid","refTable":"Port"}}},"mirrors":{"type":{"max":"unlimited","min":0,"key":{"type":"uuid","refTable":"Mirror"}}},"netf
               
low":{"type":{"key":{"type":"uuid","refTable":"NetFlow"},"min":0}},"external_ids":{"type":{"max":"unlimited","value":"string","key":"string","min":0}},
               
"other_config":{"type":{"max":"unlimited","value":"string","key":"string","min":0}},"datapath_type":{"type":"string"},"fail_mode":{"type":{"key":{"type
               
":"string","enum":["set",["secure","standalone"]]},"min":0}},"datapath_id":{"type":{"key":"string","min":0},"ephemeral":true},"controller":{"type":{"ma
               
x":"unlimited","min":0,"key":{"type":"uuid","refTable":"Controller"}}},"ipfix":{"type":{"key":{"type":"uuid","refTable":"IPFIX"},"min":0}},"rstp_enable
               
":{"type":"boolean"},"status":{"type":{"max":"unlimited","value":"string","key":"string","min":0},"ephemeral":true}},"indexes":[["name"]]},"IPFIX":{"co
               
lumns":{"external_ids":{"type":{"max":"unlimited","value":"string","key":"string","min":0}},"sampling":{"type":{"key":{"minInteger":1,"maxInteger":4294
               
967295,"type":"integer"},"min":0}},"cache_active_timeout":{"type":{"key":{"minInteger":0,"maxInteger":4200,"type":"integer"},"min":0}},"other_config":{
               
"type":{"max":"unlimited","value":"string","key":"string","min":0}},"targets":{"type":{"max":"unlimited","min":0,"key":"string"}},"obs_domain_id":{"typ
               
e":{"key":{"minInteger":0,"maxInteger":4294967295,"type":"integer"},"min":0}},"obs_point_id":{"type":{"key":{"minInteger":0,"maxInteger":4294967295,"ty
               
pe":"integer"},"min":0}},"cache_max_flows":{"type":{"key":{"minInteger":0,"maxInteger":4294967295,"type":"integer"},"min":0}}}},"SSL":{"maxRows":1,"col
               
umns":{"external_ids":{"type":{"max":"unlimited","value":"string","key":"string","min":0}},"certificate":{"type":"string"},"bootstrap_ca_cert":{"type":
               
"boolean"},"ca_cert":{"type":"string"},"private_key":{"type":"string"}}},"Interface":{"columns":{"mac":{"type":{"key":"string","min":0}},"cfm_fault_sta
               
tus":{"type":{"max":"unlimited","min":0,"key":"string"},"ephemeral":true},"lldp":{"type":{"max":"unlimited","value":"string","key":"string","min":0}},"
               
statistics":{"type":{"max":"unlimited","value":"integer","key":"string","min":0},"ephemeral":true},"cfm_flap_count":{"type":{"key":"integer","min":0}},
               
"type":{"type":"string"},"link_resets":{"type":{"key":"integer","min":0},"ephemeral":true},"name":{"type":"string","mutable":false},"lacp_current":{"ty
               
pe":{"key":"boolean","min":0},"ephemeral":true},"options":{"type":{"max":"unlimited","value":"string","key":"string","min":0}},"cfm_health":{"type":{"k
               
ey":{"minInteger":0,"maxInteger":100,"type":"integer"},"min":0},"ephemeral":true},"cfm_mpid":{"type":{"key":"integer","min":0}},"ingress_policing_rate"
               
:{"type":{"key":{"type":"integer","minInteger":0}}},"cfm_remote_mpids":{"type":{"max":"unlimited","min":0,"key":"integer"},"ephemeral":true},"mac_in_us
               
e":{"type":{"key":"string","min":0},"ephemeral":true},"status":{"type":{"max":"unlimited","value":"string","key":"string","min":0},"ephemeral":true},"l
               
ink_speed":{"type":{"key":"integer","min":0},"ephemeral":true},"link_state":{"type":{"key":{"type":"string","enum":["set",["down","up"]]},"min":0},"eph
               
emeral":true},"ofport":{"type":{"key":"integer","min":0}},"bfd_status":{"type":{"max":"unlimited","value":"string","key":"string","min":0}},"bfd":{"typ
               
e":{"max":"unlimited","value":"string","key":"string","min":0}},"ofport_request":{"type":{"key":{"minInteger":1,"maxInteger":65279,"type":"integer"},"m
               
in":0}},"ifindex":{"type":{"key":{"minInteger":0,"maxInteger":4294967295,"type":"integer"},"min":0},"ephemeral":true},"ingress_policing_burst":{"type":
               
{"key":{"type":"integer","minInteger":0}}},"external_ids":{"type":{"max":"unlimited","value":"string","key":"string","min":0}},"cfm_fault":{"type":{"ke
               
y":"boolean","min":0},"ephemeral":true},"other_config":{"type":{"max":"unlimited","value":"string","key":"string","min":0}},"admin_state":{"type":{"key
               
":{"type":"string","enum":["set",["down","up"]]},"min":0},"ephemeral":true},"mtu":{"type":{"key":"integer","min":0},"ephemeral":true},"cfm_remote_opsta
               
te":{"type":{"key":{"type":"string","enum":["set",["down","up"]]},"min":0},"ephemeral":true},"error":{"type":{"key":"string","min":0}},"duplex":{"type"
               
:{"key":{"type":"string","enum":["set",["full","half"]]},"min":0},"ephemeral":true}},"indexes":[["name"]]},"Manager":{"columns":{"external_ids":{"type"
               
:{"max":"unlimited","value":"string","key":"string","min":0}},"is_connected":{"type":"boolean","ephemeral":true},"other_config":{"type":{"max":"unlimit
               
ed","value":"string","key":"string","min":0}},"connection_mode":{"type":{"key":{"type":"string","enum":["set",["in-band","out-of-band"]]},"min":0}},"ta
               
rget":{"type":"string"},"inactivity_probe":{"type":{"key":"integer","min":0}},"status":{"type":{"max":"unlimited","value":"string","key":"string","min"
               
:0},"ephemeral":true},"max_backoff":{"type":{"key":{"type":"integer","minInteger":1000},"min":0}}},"indexes":[["target"]]},"Flow_Table":{"columns":{"ex
               
ternal_ids":{"type":{"max":"unlimited","value":"string","key":"string","min":0}},"prefixes":{"type":{"max":3,"min":0,"key":"string"}},"name":{"type":{"
               
key":"string","min":0}},"overflow_policy":{"type":{"key":{"type":"string","enum":["set",["evict","refuse"]]},"min":0}},"groups":{"type":{"max":"unlimit
               
ed","min":0,"key":"string"}},"flow_limit":{"type":{"key":{"type":"integer","minInteger":0},"min":0}}}},"Port":{"columns":{"statistics":{"type":{"max":"
               
unlimited","value":"integer","key":"string","min":0},"ephemeral":true},"mac":{"type":{"key":"string","min":0}},"trunks":{"type":{"max":4096,"min":0,"ke
               
y":{"minInteger":0,"maxInteger":4095,"type":"integer"}}},"rstp_status":{"type":{"max":"unlimited","value":"string","key":"string","min":0},"ephemeral":
               
true},"bond_updelay":{"type":"integer"},"bond_downdelay":{"type":"integer"},"bond_active_slave":{"type":{"key":"string","min":0}},"bond_fake_iface":{"t
               
ype":"boolean"},"name":{"type":"string","mutable":false},"lacp":{"type":{"key":{"type":"string","enum":["set",["active","off","passive"]]},"min":0}},"f
               
ake_bridge":{"type":"boolean"},"qos":{"type":{"key":{"type":"uuid","refTable":"QoS"},"min":0}},"interfaces":{"type":{"max":"unlimited","key":{"type":"u
               
uid","refTable":"Interface"}}},"rstp_statistics":{"type":{"max":"unlimited","value":"integer","key":"string","min":0},"ephemeral":true},"external_ids":
               
{"type":{"max":"unlimited","value":"string","key":"string","min":0}},"vlan_mode":{"type":{"key":{"type":"string","enum":["set",["access","native-tagged
               
","native-untagged","trunk"]]},"min":0}},"tag":{"type":{"key":{"minInteger":0,"maxInteger":4095,"type":"integer"},"min":0}},"other_config":{"type":{"ma
               
x":"unlimited","value":"string","key":"string","min":0}},"status":{"type":{"max":"unlimited","value":"string","key":"string","min":0},"ephemeral":true}
               
,"bond_mode":{"type":{"key":{"type":"string","enum":["set",["active-backup","balance-slb","balance-tcp"]]},"min":0}}},"indexes":[["name"]]},"NetFlow":{
               
"columns":{"external_ids":{"type":{"max":"unlimited","value":"string","key":"string","min":0}},"active_timeout":{"type":{"key":{"type":"integer","minIn
               
teger":-1}}},"targets":{"type":{"max":"unlimited","key":"string"}},"add_id_to_interface":{"type":"boolean"},"engine_id":{"type":{"key":{"minInteger":0,
               
"maxInteger":255,"type":"integer"},"min":0}},"engine_type":{"type":{"key":{"minInteger":0,"maxInteger":255,"type":"integer"},"min":0}}}},"Controller":{
               
"columns":{"external_ids":{"type":{"max":"unlimited","value":"string","key":"string","min":0}},"local_ip":{"type":{"key":"string","min":0}},"role":{"ty
               
pe":{"key":{"type":"string","enum":["set",["master","other","slave"]]},"min":0},"ephemeral":true},"is_connected":{"type":"boolean","ephemeral":true},"o
               
ther_config":{"type":{"max":"unlimited","value":"string","key":"string","min":0}},"controller_rate_limit":{"type":{"key":{"type":"integer","minInteger"
               
:100},"min":0}},"controller_burst_limit":{"type":{"key":{"type":"integer","minInteger":25},"min":0}},"connection_mode":{"type":{"key":{"type":"string",
               
"enum":["set",["in-band","out-of-band"]]},"min":0}},"enable_async_messages":{"type":{"key":"boolean","min":0}},"target":{"type":"string"},"local_netmas
               
k":{"type":{"key":"string","min":0}},"inactivity_probe":{"type":{"key":"integer","min":0}},"status":{"type":{"max":"unlimited","value":"string","key":"
               
string","min":0},"ephemeral":true},"local_gateway":{"type":{"key":"string","min":0}},"max_backoff":{"type":{"key":{"type":"integer","minInteger":1000},
               
"min":0}}}},"Mirror":{"columns":{"external_ids":{"type":{"max":"unlimited","value":"string","key":"string","min":0}},"select_all":{"type":"boolean"},"s
               
elect_src_port":{"type":{"max":"unlimited","min":0,"key":{"refTable":"Port","refType":"weak","type":"uuid"}}},"output_vlan":{"type":{"key":{"minInteger
               
":1,"maxInteger":4095,"type":"integer"},"min":0}},"statistics":{"type":{"max":"unlimited","value":"integer","key":"string","min":0},"ephemeral":true},"
               
select_vlan":{"type":{"max":4096,"min":0,"key":{"minInteger":0,"maxInteger":4095,"type":"integer"}}},"output_port":{"type":{"key":{"refTable":"Port","r
               
efType":"weak","type":"uuid"},"min":0}},"name":{"type":"string"},"select_dst_port":{"type":{"max":"unlimited","min":0,"key":{"refTable":"Port","refType
               
":"weak","type":"uuid"}}}}},"AutoAttach":{"columns":{"system_name":{"type":"string"},"mappings":{"type":{"max":"unlimited","value":{"minInteger":0,"max
               
Integer":4095,"type":"integer"},"key":{"minInteger":0,"maxInteger":16777215,"type":"integer"},"min":0}},"system_description":{"type":"string"}}},"sFlow
               
":{"columns":{"external_ids":{"type":{"max":"unlimited","value":"string","key":"string","min":0}},"agent":{"type":{"key":"string","min":0}},"header":{"
               
type":{"key":"integer","min":0}},"polling":{"type":{"key":"integer","min":0}},"sampling":{"type":{"key":"integer","min":0}},"targets":{"type":{"max":"u
               
nlimited","key":"string"}}}}},"version":"7.12.1","cksum":"2211824403 22535"}, 
id=0
2016-07-02T14:18:06Z|00014|hmap|DBG|lib/sset.c:53: 6 nodes in bucket (8 nodes, 
4 buckets)
2016-07-02T14:18:06Z|00015|hmap|DBG|lib/sset.c:53: 6 nodes in bucket (32 nodes, 
16 buckets)
2016-07-02T14:18:06Z|00016|jsonrpc|DBG|unix:/usr/local/var/run/openvswitch/db.sock:
 send request, method="monitor", params=["Open_vSwitch",null,{"Open_            
   
vSwitch":{"columns":["bridges","cur_cfg"]},"Interface":{"columns":["name","ofport"]},"Flow_Sample_Collector_Set":{"columns":["bridge"]},"Port":{"column
               
s":["fake_bridge","interfaces","name","tag"]},"Bridge":{"columns":["controller","datapath_type","fail_mode","name","ports"]},"Controller":{"columns":[]
               }}], id=1
2016-07-02T14:18:06Z|00017|jsonrpc|DBG|unix:/usr/local/var/run/openvswitch/db.sock:
 received reply, result={"Open_vSwitch":{"c67d14d9-857f-460d-90a2-da            
   79df5f9d09":{"new":{"cur_cfg":0,"bridges":["set",[]]}}}}, id=1
2016-07-02T14:18:06Z|00018|jsonrpc|DBG|unix:/usr/local/var/run/openvswitch/db.sock:
 send request, method="transact", params=["Open_vSwitch",{"where":[[            
   
"_uuid","==",["uuid","c67d14d9-857f-460d-90a2-da79df5f9d09"]]],"table":"Open_vSwitch","timeout":0,"op":"wait","rows":[{"bridges":["set",[]]}],"columns"
               
:["bridges"],"until":"=="},{"row":{"name":"br0","ports":["named-uuid","row67094deb_129b_4760_afef_46082914fc0f"],"datapath_type":"netdev"},"table":"Bri
               
dge","op":"insert","uuid-name":"rowd71a9941_b131_4485_a077_cd03e0720c90"},{"row":{"bridges":["named-uuid","rowd71a9941_b131_4485_a077_cd03e0720c90"]},"
               
where":[["_uuid","==",["uuid","c67d14d9-857f-460d-90a2-da79df5f9d09"]]],"table":"Open_vSwitch","op":"update"},{"row":{"type":"internal","name":"br0"},"
               
table":"Interface","op":"insert","uuid-name":"row786ac466_b3fa_42ed_91a3_c73b98506b45"},{"row":{"name":"br0","interfaces":["named-uuid","row786ac466_b3
               
fa_42ed_91a3_c73b98506b45"]},"table":"Port","op":"insert","uuid-name":"row67094deb_129b_4760_afef_46082914fc0f"},{"mutations":[["next_cfg","+=",1]],"wh
               
ere":[["_uuid","==",["uuid","c67d14d9-857f-460d-90a2-da79df5f9d09"]]],"table":"Open_vSwitch","op":"mutate"},{"where":[["_uuid","==",["uuid","c67d14d9-8
               
57f-460d-90a2-da79df5f9d09"]]],"table":"Open_vSwitch","op":"select","columns":["next_cfg"]},{"op":"comment","comment":"ovs-vsctl:
 ./ovs-vsctl -v add-br                br0 -- set bridge br0 
datapath_type=netdev"}], id=2
2016-07-02T14:18:06Z|00019|jsonrpc|DBG|unix:/usr/local/var/run/openvswitch/db.sock:
 received notification, method="update", params=[null,{"Interface":{            
   
"e0c6c65d-6420-428a-b260-0a7813bb8e05":{"new":{"ofport":["set",[]],"name":"br0"}}},"Open_vSwitch":{"c67d14d9-857f-460d-90a2-da79df5f9d09":{"old":{"brid
               
ges":["set",[]]},"new":{"cur_cfg":0,"bridges":["uuid","bc4fe747-1603-4ede-a94e-a64af3226cee"]}}},"Port":{"10f4a392-4c3d-4c24-a2e1-78f91c60f9f9":{"new":
               
{"fake_bridge":false,"tag":["set",[]],"name":"br0","interfaces":["uuid","e0c6c65d-6420-428a-b260-0a7813bb8e05"]}}},"Bridge":{"bc4fe747-1603-4ede-a94e-a
               
64af3226cee":{"new":{"name":"br0","ports":["uuid","10f4a392-4c3d-4c24-a2e1-78f91c60f9f9"],"datapath_type":"netdev","fail_mode":["set",[]],"controller":
               ["set",[]]}}}}]
2016-07-02T14:18:06Z|00020|jsonrpc|DBG|unix:/usr/local/var/run/openvswitch/db.sock:
 received reply, result=[{},{"uuid":["uuid","bc4fe747-1603-4ede-a94e            
   
-a64af3226cee"]},{"count":1},{"uuid":["uuid","e0c6c65d-6420-428a-b260-0a7813bb8e05"]},{"uuid":["uuid","10f4a392-4c3d-4c24-a2e1-78f91c60f9f9"]},{"count"
               :1},{"rows":[{"next_cfg":1}]},{}], id=2
2016-07-02T14:18:06Z|00021|poll_loop|DBG|wakeup due to 0-ms timeout at 
lib/ovsdb-idl.c:1729
2016-07-02T14:19:51Z|00022|poll_loop|DBG|wakeup due to [POLLIN] on fd 5 (FIFO 
pipe:[26870]) at lib/fatal-signal.c:224 (0% CPU usage)
2016-07-02T14:19:51Z|00023|fatal_signal|WARN|terminating with signal 2 
(Interrupt)
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