1 files changed, 85 insertions, 8 deletions

diff --git a/docs/release/userguide/live_migration.userguide.rst b/docs/release/userguide/live_migration.userguide.rst
index 9fa9b82fd..ff075ac26 100644
--- a/docs/release/userguide/live_migration.userguide.rst
+++ b/docs/release/userguide/live_migration.userguide.rst
@@ -72,16 +72,83 @@ QEMU v2.4.0
 
 Ethernet controller: Intel Corporation Ethernet Controller 10-Gigabit
 X540-AT2 (rev 01)
+
+Vhost-user with OVS/DPDK as backend:
+::
+The goal is to connect guests' virtio-net devices having vhost-user backend to OVS dpdkvhostuser
+ports and be able to run any kind of network traffic between them.
+
+Installation of OVS and DPDK:
+::
+Using vsperf,installing the OVS and DPDk. Prepare the directories
+
+.. code:: bash
+
+   mkdir -p /var/run/openvswitch
+   mount -t hugetlbfs -o pagesize=2048k none /dev/hugepages
+
+Load Kernel modules
+
+.. code:: bash
+
+   modprobe openvswitch
+
+For OVS setup, clean the environment
+
+.. code:: bash
+
+   rm -f /usr/local/var/run/openvswitch/vhost-user*
+   rm -f /usr/local/etc/openvswitch/conf.db
+
+Start database server
+
+.. code:: bash
+
+   ovsdb-tool create /usr/local/etc/openvswitch/conf.db $VSPERF/src/ovs/ovs/vswitchd/vswitch.ovsschema
+   ovsdb-server --remote=punix:$DB_SOCK --remote=db:Open_vSwitch,Open_vSwitch,manager_options --pidfile --detach
+
+Start OVS
+
+.. code:: bash
+
+   ovs-vsctl --no-wait init
+   ovs-vsctl --no-wait set Open_vSwitch . other_config:dpdk-lcore-mask=0xf
+   ovs-vsctl --no-wait set Open_vSwitch . other_config:dpdk-socket-mem=1024
+   ovs-vsctl --no-wait set Open_vSwitch . other_config:dpdk-init=true
+
+Configure the bridge
+
+.. code:: bash
+
+   ovs-vsctl add-br ovsbr0 -- set bridge ovsbr0 datapath_type=netdev
+   ovs-vsctl add-port ovsbr0 vhost-user1 -- set Interface vhost-user1 type=dpdkvhostuser
+   ovs-vsctl add-port ovsbr0 vhost-user2 -- set Interface vhost-user2 type=dpdkvhostuser
+
 QEMU parameters:
 ::
-${qemu} -smp ${guest_cpus} -monitor unix:${qmp_sock},server,nowait -daemonize \
--cpu host,migratable=off,+invtsc,+tsc-deadline,pmu=off \
--realtime mlock=on -mem-prealloc -enable-kvm -m 1G \
--mem-path /mnt/hugetlbfs-1g \
--drive file=/root/minimal-centos1.qcow2,cache=none,aio=threads \
--netdev user,id=guest0,hostfwd=tcp:5555-:22 \
--device virtio-net-pci,netdev=guest0 \
--nographic -serial /dev/null -parallel /dev/null
+qemu-system-x86_64 -enable-kvm -cpu host -smp 2
+-chardev socket,id=char1,path=/usr/local/var/run/openvswitch/vhost-user1
+-netdev type=vhost-user,id=net1,chardev=char1,vhostforce \
+-device virtio-net-pci,netdev=net1,mac=52:54:00:12:34:56 \
+-chardev socket,id=char2,path=/usr/local/var/run/openvswitch/vhost-user2\
+-netdev type=vhost-user,id=net2,chardev=char2,vhostforce \
+-device virtio-net-pci,netdev=net2,mac=54:54:00:12:34:56 -m 1024 -mem-path /dev/hugepages \
+-mem-prealloc -realtime mlock=on -monitor unix:/tmp/qmp-sock-src,server,nowait \
+-balloon virtio -drive file=/root/guest1.qcow2 -vnc :1 &
+
+Run the standby qemu with -incoming tcp:-incoming tcp:${incoming_ip}:${migrate_port}:${migrate_port}
+
+For local live migration
+
+.. code:: bash
+
+   incoming ip=0
+
+For peer -peer live migration
+
+.. code:: bash
+
+   incoming ip=dest_host
 
 Network connection
 
@@ -90,6 +157,16 @@ Network connection
    :alt: live migration network connection
    :figwidth: 80%
 
+Commands for performing live migration:
+::
+
+.. code:: bash
+
+   echo "migrate_set_speed 0" |nc -U /tmp/qmp-sock-src
+   echo "migrate_set_downtime 0.10" |nc -U /tmp/qmp-sock-src
+   echo "migrate -d tcp:0:4444" |nc -U /tmp/qmp-sock-src
+   #Wait till livemigration completed
+   echo "info migrate" | nc -U /tmp/qmp-sock-src
 
 Test Result
 -----------