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Chapter 9. Deploying different bond modes with OVS DPDK

Use this procedure to deploy different bond modes with OVS-DPDK in Red Hat OpenStack Platform.

9.1. Solution
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Make the following changes to the compute.yaml environment file. Note that this example also sets the MTU value to 2000. 

(...)
            -
              type: ovs_user_bridge
              name: br-link
              mtu: 2000
              use_dhcp: false
              members:
                -
                  type: ovs_dpdk_bond
                  name: dpdkbond0
                  ovs_options: "bond_mode=balance-slb"
                  mtu: 2000
                  ovs_extra:
                    - set interface dpdk0 mtu_request=$MTU
                    - set interface dpdk1 mtu_request=$MTU
                  members:
                    -
                      type: ovs_dpdk_port
                      name: dpdk0
                      members:
                        -
                          type: interface
                          name: p1p2
                    -
                      type: ovs_dpdk_port
                      name: dpdk1
                      members:
                        -
                          type: interface
                          name: p1p1
(...)
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Deploy or redeploy the overcloud with the template changes made above. When complete, perform the following steps on an overcloud node.

Verify the os-net-config configuration: 

cat /etc/os-net-config/config.json | python -m json.tool
(...)
        {
            "members": [
                {
                    "members": [
                        {
                            "members": [
                                {
                                    "name": "p1p2",
                                    "type": "interface"
                                }
                            ],
                            "name": "dpdk0",
                            "type": "ovs_dpdk_port"
                        },
                        {
                            "members": [
                                {
                                    "name": "p1p1",
                                    "type": "interface"
                                }
                            ],
                            "name": "dpdk1",
                            "type": "ovs_dpdk_port"
                        }
                    ],
                    "mtu": 2000,
                    "name": "dpdkbond0",
                    "ovs_extra": [
                        "set interface dpdk0 mtu_request=$MTU",
                        "set interface dpdk1 mtu_request=$MTU"
                    ],
                    "ovs_options": "bond_mode=balance-slb",
                    "type": "ovs_dpdk_bond"
                }
            ],
            "mtu": 2000,
            "name": "br-link",
            "type": "ovs_user_bridge",
            "use_dhcp": false
        },
(...)
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Verify the bond: 

[root@overcloud-compute-0 ~]# ovs-appctl bond/show dpdkbond0
---- dpdkbond0 ----
bond_mode: balance-slb
bond may use recirculation: no, Recirc-ID : -1
bond-hash-basis: 0
updelay: 0 ms
downdelay: 0 ms
next rebalance: 9221 ms
lacp_status: off
active slave mac: a0:36:9f:e5:da:82(dpdk1)

slave dpdk0: enabled
    may_enable: true

slave dpdk1: enabled
    active slave
    may_enable: true
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