Hi,
We seem to face a concurrent issue between 2 processes: "add-br" and "find
Interface" as follows
1. A "l3 agent" process added a port q-router to a bridge (br-int) by calling
"ovs-vsctl add-port" and the command returned successfully:
Jun 30 07:30:13 neutron1 ovs-vsctl: 00001|vsctl|INFO|Called as
/usr/bin/ovs-vsctl -- --may-exist add-port br-int qr-3cc2ad9c-a3 -- set
Interface qr-3cc2ad9c-a3 type=internal -- set Interface qr-3cc2ad9c-a3
external-ids:iface-id=3cc2ad9c-a3a5-4bd0-b5d9-bbb12ea8a4b0 -- set Interface
qr-3cc2ad9c-a3 external-ids:iface-status=active -- set Interface qr-3cc2ad9c-a3
external-ids:attached-mac=fa:16:3e:47:24:0c
2. On the other hand, after 2 secs, another "ovs agent" process finds the
interface, but ofport is empty:
$ ovs-vsctl -- --columns=external_ids,name,ofport find Interface
external_ids:iface-id=3cc2ad9c-a3a5-4bd0-b5d9-bbb12ea8a4b0
external_ids : {attached-mac="fa:16:3e:47:24:0c",
iface-id="3cc2ad9c-a3a5-4bd0-b5d9-bbb12ea8a4b0", iface-status=active}
name : "qr-3cc2ad9c-a3"
ofport : [] <<<<<< empty set
ofport the empty set means that the interface hasn't been created yet, even the
command "add-br" returned successfully???
3. After some more seconds, We checked and see that "ofport" is available.
Any ideas which causes the latency of "add-br" and how to improve it?
# ENVIRONMENT
Linux kernel: 3.2.0-51-generic
openvswitch: 1.4.6-0ubuntu1.12.04.2~lp1259285
$ modinfo openvswitch
filename: /lib/modules/3.2.0-51-generic/updates/dkms/openvswitch.ko
license: GPL
description: Open vSwitch switching datapath
srcversion: FA8A202C2BF3BE368305DCD
depends:
vermagic: 3.2.0-51-generic SMP mod_unload modversions
Many thanks,
Tri _______________________________________________
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