Add documentation on how to use OVS integration with the upcoming Libvirt 0.9.11 release.
Signed-off-by: Ansis Atteka <aatt...@nicira.com> --- INSTALL.Libvirt | 73 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 73 insertions(+), 0 deletions(-) create mode 100644 INSTALL.Libvirt diff --git a/INSTALL.Libvirt b/INSTALL.Libvirt new file mode 100644 index 0000000..61e474c --- /dev/null +++ b/INSTALL.Libvirt @@ -0,0 +1,73 @@ + How to Use Open vSwitch with Libvirt + ==================================== + +This document describes how to use Open vSwitch with Libvirt 0.9.11 or +later. The Open vSwitch support in libvirt 0.9.11 eliminates the need to +use OVS Linux Bridge compatibility layer (brcompatd) and interface up/down +scripts. This document assumes that you followed INSTALL.Linux to get Open +vSwitch setup on your Linux system and have libvirt 0.9.11 or later +installed. The Open vSwitch support is included by default in Libvirt. +Consult www.libvirt.org for instructions on how to build the latest Libvirt. + +Limitations +----------- +Currently there is no Open vSwitch support for networks that are managed +by libvirt (e.g. NAT). As of now only bridged networks are supported (those +where user has to manually create the bridge). + + +Setup +----- + +First create the Open vSwitch bridge by using the ovs-vsctl utility: + + % ovs-vsctl add-br ovsbr + +Once that is done, create a VM, if necessary, and edit its Domain XML file: + + % virsh edit <vm> + +Lookup in the Domain XML file the <interface> section. There should be one +such XML section per each interface the VM has. + + ... + <interface type='network'> + <mac address='52:54:00:71:b1:b6'/> + <source network='default'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> + </interface> + ... + +And change it to something like this: + + ... + <interface type='bridge'> + <mac address='52:54:00:71:b1:b6'/> + <source bridge='ovsbr'/> + <virtualport type='openvswitch'> + </virtualport> + <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> + </interface> + ... + +The interface type must be set to "bridge". The <source> XML element +specifies to which bridge this interface will be attached to. The +<virtualport> element indicates that bridge in <source> element is an +Open vSwitch bridge. + +Then (re)start the VM and verify if guest's vnet interface is attached to +the ovsbr bridge. + + % ovs-vsctl show + +Troubleshooting +--------------- + +If VM does not want to start, then try to run libvirtd process either +from the terminal or inspect Libvirt/Open vSwitch log files for possible +root cause. + +Bug Reporting +------------- + +Please report problems to b...@openvswitch.org. -- 1.7.9.1 _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
