Public bug reported:
After commit https://review.opendev.org/c/openstack/neutron/+/371455
OVSAgentBridge.setup_controllers() no longer sets OpenFlow10 protocol for the
bridge, instead it was moved to ovs_lib.OVSBridge.create().
However some (custom) OVS bridges could be created by nova/os-vif when plugging
VM interface.
For such bridges neutron does not call create(), only setup_controllers() - as
a result such bridges support only OpenFlow13 and ovs-ofctl command fails:
2020-11-24T20:18:38Z|00001|vconn|WARN|unix:/var/run/openvswitch/br01711489f-fe.24081.mgmt:
version negotiation failed (we support version 0x01, peer supports version
0x04)
ovs-ofctl: br01711489f-fe: failed to connect to socket (Broken pipe)
Fix: return setting of OpenFlow10 (along with OpenFlow13) to
setup_controllers(). It's doesn't hurt even if bridge already has
OpenFlow10 in supported protocols.
** Affects: neutron
Importance: Low
Assignee: Oleg Bondarev (obondarev)
Status: New
** Tags: ovs ovs-lib
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https://bugs.launchpad.net/bugs/1905538
Title:
Some OVS bridges may lack OpenFlow10 protocol
Status in neutron:
New
Bug description:
After commit https://review.opendev.org/c/openstack/neutron/+/371455
OVSAgentBridge.setup_controllers() no longer sets OpenFlow10 protocol for the
bridge, instead it was moved to ovs_lib.OVSBridge.create().
However some (custom) OVS bridges could be created by nova/os-vif when
plugging VM interface.
For such bridges neutron does not call create(), only setup_controllers() -
as a result such bridges support only OpenFlow13 and ovs-ofctl command fails:
2020-11-24T20:18:38Z|00001|vconn|WARN|unix:/var/run/openvswitch/br01711489f-fe.24081.mgmt:
version negotiation failed (we support version 0x01, peer supports version
0x04)
ovs-ofctl: br01711489f-fe: failed to connect to socket (Broken pipe)
Fix: return setting of OpenFlow10 (along with OpenFlow13) to
setup_controllers(). It's doesn't hurt even if bridge already has
OpenFlow10 in supported protocols.
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