714 lines
17 KiB
ReStructuredText
714 lines
17 KiB
ReStructuredText
.. BSD LICENSE
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Copyright(c) 2016 Intel Corporation. All rights reserved.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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* Neither the name of Intel Corporation nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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Live Migration of VM with SR-IOV VF
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===================================
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Overview
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--------
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It is not possible to migrate a Virtual Machine which has an SR-IOV Virtual Function (VF).
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To get around this problem the bonding PMD is used.
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The following sections show an example of how to do this.
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Test Setup
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----------
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A bonded device is created in the VM.
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The virtio and VF PMD's are added as slaves to the bonded device.
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The VF is set as the primary slave of the bonded device.
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A bridge must be set up on the Host connecting the tap device, which is the
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backend of the Virtio device and the Physical Function (PF) device.
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To test the Live Migration two servers with identical operating systems installed are used.
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KVM and Qemu 2.3 is also required on the servers.
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In this example, the servers have Niantic and or Fortville NIC's installed.
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The NIC's on both servers are connected to a switch
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which is also connected to the traffic generator.
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The switch is configured to broadcast traffic on all the NIC ports.
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A :ref:`Sample switch configuration <lm_bond_virtio_sriov_switch_conf>`
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can be found in this section.
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The host is running the Kernel PF driver (ixgbe or i40e).
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The ip address of host_server_1 is 10.237.212.46
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The ip address of host_server_2 is 10.237.212.131
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.. _figure_lm_bond_virtio_sriov:
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.. figure:: img/lm_bond_virtio_sriov.*
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Live Migration steps
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--------------------
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The sample scripts mentioned in the steps below can be found in the
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:ref:`Sample host scripts <lm_bond_virtio_sriov_host_scripts>` and
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:ref:`Sample VM scripts <lm_bond_virtio_sriov_vm_scripts>` sections.
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On host_server_1: Terminal 1
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.. code-block:: console
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cd /root/dpdk/host_scripts
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./setup_vf_on_212_46.sh
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For Fortville NIC
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.. code-block:: console
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./vm_virtio_vf_i40e_212_46.sh
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For Niantic NIC
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.. code-block:: console
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./vm_virtio_vf_one_212_46.sh
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On host_server_1: Terminal 2
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.. code-block:: console
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cd /root/dpdk/host_scripts
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./setup_bridge_on_212_46.sh
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./connect_to_qemu_mon_on_host.sh
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(qemu)
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On host_server_1: Terminal 1
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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**In VM on host_server_1:**
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.. code-block:: console
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cd /root/dpdk/vm_scripts
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./setup_dpdk_in_vm.sh
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./run_testpmd_bonding_in_vm.sh
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testpmd> show port info all
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The ``mac_addr`` command only works with kernel PF for Niantic
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.. code-block:: console
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testpmd> mac_addr add port 1 vf 0 AA:BB:CC:DD:EE:FF
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The syntax of the ``testpmd`` command is:
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Create bonded device (mode) (socket).
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Mode 1 is active backup.
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Virtio is port 0 (P0).
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VF is port 1 (P1).
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Bonding is port 2 (P2).
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.. code-block:: console
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testpmd> create bonded device 1 0
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Created new bonded device net_bond_testpmd_0 on (port 2).
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testpmd> add bonding slave 0 2
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testpmd> add bonding slave 1 2
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testpmd> show bonding config 2
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The syntax of the ``testpmd`` command is:
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set bonding primary (slave id) (port id)
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Set primary to P1 before starting bonding port.
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.. code-block:: console
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testpmd> set bonding primary 1 2
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testpmd> show bonding config 2
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testpmd> port start 2
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Port 2: 02:09:C0:68:99:A5
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Checking link statuses...
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Port 0 Link Up - speed 10000 Mbps - full-duplex
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Port 1 Link Up - speed 10000 Mbps - full-duplex
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Port 2 Link Up - speed 10000 Mbps - full-duplex
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testpmd> show bonding config 2
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Primary is now P1. There are 2 active slaves.
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Use P2 only for forwarding.
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.. code-block:: console
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testpmd> set portlist 2
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testpmd> show config fwd
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testpmd> set fwd mac
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testpmd> start
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testpmd> show bonding config 2
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Primary is now P1. There are 2 active slaves.
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.. code-block:: console
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testpmd> show port stats all
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VF traffic is seen at P1 and P2.
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.. code-block:: console
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testpmd> clear port stats all
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testpmd> set bonding primary 0 2
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testpmd> remove bonding slave 1 2
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testpmd> show bonding config 2
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Primary is now P0. There is 1 active slave.
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.. code-block:: console
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testpmd> clear port stats all
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testpmd> show port stats all
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No VF traffic is seen at P0 and P2, VF MAC address still present.
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.. code-block:: console
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testpmd> port stop 1
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testpmd> port close 1
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Port close should remove VF MAC address, it does not remove perm_addr.
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The ``mac_addr`` command only works with the kernel PF for Niantic.
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.. code-block:: console
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testpmd> mac_addr remove 1 AA:BB:CC:DD:EE:FF
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testpmd> port detach 1
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Port '0000:00:04.0' is detached. Now total ports is 2
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testpmd> show port stats all
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No VF traffic is seen at P0 and P2.
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On host_server_1: Terminal 2
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.. code-block:: console
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(qemu) device_del vf1
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On host_server_1: Terminal 1
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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**In VM on host_server_1:**
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.. code-block:: console
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testpmd> show bonding config 2
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Primary is now P0. There is 1 active slave.
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.. code-block:: console
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testpmd> show port info all
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testpmd> show port stats all
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On host_server_2: Terminal 1
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.. code-block:: console
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cd /root/dpdk/host_scripts
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./setup_vf_on_212_131.sh
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./vm_virtio_one_migrate.sh
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On host_server_2: Terminal 2
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.. code-block:: console
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./setup_bridge_on_212_131.sh
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./connect_to_qemu_mon_on_host.sh
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(qemu) info status
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VM status: paused (inmigrate)
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(qemu)
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On host_server_1: Terminal 2
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Check that the switch is up before migrating.
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.. code-block:: console
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(qemu) migrate tcp:10.237.212.131:5555
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(qemu) info status
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VM status: paused (postmigrate)
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For the Niantic NIC.
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.. code-block:: console
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(qemu) info migrate
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capabilities: xbzrle: off rdma-pin-all: off auto-converge: off zero-blocks: off
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Migration status: completed
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total time: 11834 milliseconds
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downtime: 18 milliseconds
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setup: 3 milliseconds
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transferred ram: 389137 kbytes
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throughput: 269.49 mbps
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remaining ram: 0 kbytes
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total ram: 1590088 kbytes
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duplicate: 301620 pages
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skipped: 0 pages
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normal: 96433 pages
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normal bytes: 385732 kbytes
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dirty sync count: 2
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(qemu) quit
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For the Fortville NIC.
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.. code-block:: console
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(qemu) info migrate
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capabilities: xbzrle: off rdma-pin-all: off auto-converge: off zero-blocks: off
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Migration status: completed
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total time: 11619 milliseconds
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downtime: 5 milliseconds
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setup: 7 milliseconds
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transferred ram: 379699 kbytes
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throughput: 267.82 mbps
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remaining ram: 0 kbytes
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total ram: 1590088 kbytes
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duplicate: 303985 pages
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skipped: 0 pages
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normal: 94073 pages
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normal bytes: 376292 kbytes
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dirty sync count: 2
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(qemu) quit
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On host_server_2: Terminal 1
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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**In VM on host_server_2:**
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Hit Enter key. This brings the user to the testpmd prompt.
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.. code-block:: console
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testpmd>
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On host_server_2: Terminal 2
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.. code-block:: console
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(qemu) info status
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VM status: running
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For the Niantic NIC.
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.. code-block:: console
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(qemu) device_add pci-assign,host=06:10.0,id=vf1
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For the Fortville NIC.
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.. code-block:: console
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(qemu) device_add pci-assign,host=03:02.0,id=vf1
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On host_server_2: Terminal 1
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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**In VM on host_server_2:**
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.. code-block:: console
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testomd> show port info all
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testpmd> show port stats all
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testpmd> show bonding config 2
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testpmd> port attach 0000:00:04.0
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Port 1 is attached.
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Now total ports is 3
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Done
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testpmd> port start 1
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The ``mac_addr`` command only works with the Kernel PF for Niantic.
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.. code-block:: console
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testpmd> mac_addr add port 1 vf 0 AA:BB:CC:DD:EE:FF
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testpmd> show port stats all.
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testpmd> show config fwd
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testpmd> show bonding config 2
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testpmd> add bonding slave 1 2
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testpmd> set bonding primary 1 2
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testpmd> show bonding config 2
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testpmd> show port stats all
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VF traffic is seen at P1 (VF) and P2 (Bonded device).
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.. code-block:: console
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testpmd> remove bonding slave 0 2
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testpmd> show bonding config 2
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testpmd> port stop 0
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testpmd> port close 0
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testpmd> port detach 0
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Port '0000:00:03.0' is detached. Now total ports is 2
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testpmd> show port info all
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testpmd> show config fwd
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testpmd> show port stats all
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VF traffic is seen at P1 (VF) and P2 (Bonded device).
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.. _lm_bond_virtio_sriov_host_scripts:
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Sample host scripts
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-------------------
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setup_vf_on_212_46.sh
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~~~~~~~~~~~~~~~~~~~~~
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Set up Virtual Functions on host_server_1
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.. code-block:: sh
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#!/bin/sh
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# This script is run on the host 10.237.212.46 to setup the VF
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# set up Niantic VF
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cat /sys/bus/pci/devices/0000\:09\:00.0/sriov_numvfs
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echo 1 > /sys/bus/pci/devices/0000\:09\:00.0/sriov_numvfs
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cat /sys/bus/pci/devices/0000\:09\:00.0/sriov_numvfs
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rmmod ixgbevf
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# set up Fortville VF
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cat /sys/bus/pci/devices/0000\:02\:00.0/sriov_numvfs
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echo 1 > /sys/bus/pci/devices/0000\:02\:00.0/sriov_numvfs
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cat /sys/bus/pci/devices/0000\:02\:00.0/sriov_numvfs
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rmmod i40evf
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vm_virtio_vf_one_212_46.sh
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~~~~~~~~~~~~~~~~~~~~~~~~~~
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Setup Virtual Machine on host_server_1
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.. code-block:: sh
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#!/bin/sh
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# Path to KVM tool
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KVM_PATH="/usr/bin/qemu-system-x86_64"
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# Guest Disk image
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DISK_IMG="/home/username/disk_image/virt1_sml.disk"
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# Number of guest cpus
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VCPUS_NR="4"
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# Memory
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MEM=1536
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taskset -c 1-5 $KVM_PATH \
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-enable-kvm \
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-m $MEM \
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-smp $VCPUS_NR \
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-cpu host \
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-name VM1 \
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-no-reboot \
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-net none \
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-vnc none -nographic \
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-hda $DISK_IMG \
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-netdev type=tap,id=net1,script=no,downscript=no,ifname=tap1 \
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-device virtio-net-pci,netdev=net1,mac=CC:BB:BB:BB:BB:BB \
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-device pci-assign,host=09:10.0,id=vf1 \
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-monitor telnet::3333,server,nowait
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setup_bridge_on_212_46.sh
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~~~~~~~~~~~~~~~~~~~~~~~~~
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Setup bridge on host_server_1
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.. code-block:: sh
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#!/bin/sh
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# This script is run on the host 10.237.212.46 to setup the bridge
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# for the Tap device and the PF device.
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# This enables traffic to go from the PF to the Tap to the Virtio PMD in the VM.
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# ens3f0 is the Niantic NIC
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# ens6f0 is the Fortville NIC
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ifconfig ens3f0 down
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ifconfig tap1 down
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ifconfig ens6f0 down
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ifconfig virbr0 down
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brctl show virbr0
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brctl addif virbr0 ens3f0
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brctl addif virbr0 ens6f0
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brctl addif virbr0 tap1
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brctl show virbr0
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ifconfig ens3f0 up
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ifconfig tap1 up
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ifconfig ens6f0 up
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ifconfig virbr0 up
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connect_to_qemu_mon_on_host.sh
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.. code-block:: sh
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#!/bin/sh
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# This script is run on both hosts when the VM is up,
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# to connect to the Qemu Monitor.
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telnet 0 3333
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setup_vf_on_212_131.sh
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~~~~~~~~~~~~~~~~~~~~~~
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Set up Virtual Functions on host_server_2
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.. code-block:: sh
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#!/bin/sh
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# This script is run on the host 10.237.212.131 to setup the VF
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# set up Niantic VF
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cat /sys/bus/pci/devices/0000\:06\:00.0/sriov_numvfs
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echo 1 > /sys/bus/pci/devices/0000\:06\:00.0/sriov_numvfs
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cat /sys/bus/pci/devices/0000\:06\:00.0/sriov_numvfs
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rmmod ixgbevf
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# set up Fortville VF
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cat /sys/bus/pci/devices/0000\:03\:00.0/sriov_numvfs
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echo 1 > /sys/bus/pci/devices/0000\:03\:00.0/sriov_numvfs
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cat /sys/bus/pci/devices/0000\:03\:00.0/sriov_numvfs
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rmmod i40evf
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vm_virtio_one_migrate.sh
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~~~~~~~~~~~~~~~~~~~~~~~~
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Setup Virtual Machine on host_server_2
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.. code-block:: sh
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#!/bin/sh
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# Start the VM on host_server_2 with the same parameters except without the VF
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# parameters, as the VM on host_server_1, in migration-listen mode
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# (-incoming tcp:0:5555)
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# Path to KVM tool
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KVM_PATH="/usr/bin/qemu-system-x86_64"
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# Guest Disk image
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DISK_IMG="/home/username/disk_image/virt1_sml.disk"
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# Number of guest cpus
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VCPUS_NR="4"
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# Memory
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MEM=1536
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taskset -c 1-5 $KVM_PATH \
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-enable-kvm \
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-m $MEM \
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-smp $VCPUS_NR \
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-cpu host \
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-name VM1 \
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-no-reboot \
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-net none \
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-vnc none -nographic \
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-hda $DISK_IMG \
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-netdev type=tap,id=net1,script=no,downscript=no,ifname=tap1 \
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-device virtio-net-pci,netdev=net1,mac=CC:BB:BB:BB:BB:BB \
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-incoming tcp:0:5555 \
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-monitor telnet::3333,server,nowait
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setup_bridge_on_212_131.sh
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~~~~~~~~~~~~~~~~~~~~~~~~~~
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Setup bridge on host_server_2
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.. code-block:: sh
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#!/bin/sh
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# This script is run on the host to setup the bridge
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# for the Tap device and the PF device.
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# This enables traffic to go from the PF to the Tap to the Virtio PMD in the VM.
|
|
|
|
# ens4f0 is the Niantic NIC
|
|
# ens5f0 is the Fortville NIC
|
|
|
|
ifconfig ens4f0 down
|
|
ifconfig tap1 down
|
|
ifconfig ens5f0 down
|
|
ifconfig virbr0 down
|
|
|
|
brctl show virbr0
|
|
brctl addif virbr0 ens4f0
|
|
brctl addif virbr0 ens5f0
|
|
brctl addif virbr0 tap1
|
|
brctl show virbr0
|
|
|
|
ifconfig ens4f0 up
|
|
ifconfig tap1 up
|
|
ifconfig ens5f0 up
|
|
ifconfig virbr0 up
|
|
|
|
.. _lm_bond_virtio_sriov_vm_scripts:
|
|
|
|
Sample VM scripts
|
|
-----------------
|
|
|
|
setup_dpdk_in_vm.sh
|
|
~~~~~~~~~~~~~~~~~~~
|
|
|
|
Set up DPDK in the Virtual Machine
|
|
|
|
.. code-block:: sh
|
|
|
|
#!/bin/sh
|
|
# this script matches the vm_virtio_vf_one script
|
|
# virtio port is 03
|
|
# vf port is 04
|
|
|
|
cat /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages
|
|
echo 1024 > /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages
|
|
cat /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages
|
|
|
|
ifconfig -a
|
|
/root/dpdk/usertools/dpdk-devbind.py --status
|
|
|
|
rmmod virtio-pci ixgbevf
|
|
|
|
modprobe uio
|
|
insmod /root/dpdk/x86_64-default-linuxapp-gcc/kmod/igb_uio.ko
|
|
|
|
/root/dpdk/usertools/dpdk-devbind.py -b igb_uio 0000:00:03.0
|
|
/root/dpdk/usertools/dpdk-devbind.py -b igb_uio 0000:00:04.0
|
|
|
|
/root/dpdk/usertools/dpdk-devbind.py --status
|
|
|
|
run_testpmd_bonding_in_vm.sh
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
Run testpmd in the Virtual Machine.
|
|
|
|
.. code-block:: sh
|
|
|
|
#!/bin/sh
|
|
# Run testpmd in the VM
|
|
|
|
# The test system has 8 cpus (0-7), use cpus 2-7 for VM
|
|
# Use taskset -pc <core number> <thread_id>
|
|
|
|
# use for bonding of virtio and vf tests in VM
|
|
|
|
/root/dpdk/x86_64-default-linuxapp-gcc/app/testpmd \
|
|
-l 0-3 -n 4 --socket-mem 350 -- --i --port-topology=chained
|
|
|
|
.. _lm_bond_virtio_sriov_switch_conf:
|
|
|
|
Sample switch configuration
|
|
---------------------------
|
|
|
|
The Intel switch is used to connect the traffic generator to the
|
|
NIC's on host_server_1 and host_server_2.
|
|
|
|
In order to run the switch configuration two console windows are required.
|
|
|
|
Log in as root in both windows.
|
|
|
|
TestPointShared, run_switch.sh and load /root/switch_config must be executed
|
|
in the sequence below.
|
|
|
|
On Switch: Terminal 1
|
|
~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
run TestPointShared
|
|
|
|
.. code-block:: console
|
|
|
|
/usr/bin/TestPointShared
|
|
|
|
On Switch: Terminal 2
|
|
~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
execute run_switch.sh
|
|
|
|
.. code-block:: console
|
|
|
|
/root/run_switch.sh
|
|
|
|
On Switch: Terminal 1
|
|
~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
load switch configuration
|
|
|
|
.. code-block:: console
|
|
|
|
load /root/switch_config
|
|
|
|
Sample switch configuration script
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
The ``/root/switch_config`` script:
|
|
|
|
.. code-block:: sh
|
|
|
|
# TestPoint History
|
|
show port 1,5,9,13,17,21,25
|
|
set port 1,5,9,13,17,21,25 up
|
|
show port 1,5,9,13,17,21,25
|
|
del acl 1
|
|
create acl 1
|
|
create acl-port-set
|
|
create acl-port-set
|
|
add port port-set 1 0
|
|
add port port-set 5,9,13,17,21,25 1
|
|
create acl-rule 1 1
|
|
add acl-rule condition 1 1 port-set 1
|
|
add acl-rule action 1 1 redirect 1
|
|
apply acl
|
|
create vlan 1000
|
|
add vlan port 1000 1,5,9,13,17,21,25
|
|
set vlan tagging 1000 1,5,9,13,17,21,25 tag
|
|
set switch config flood_ucast fwd
|
|
show port stats all 1,5,9,13,17,21,25
|