On 11/13/2016 01:23 PM, Ivan Borodin wrote:

Good day gentlemen. I am building a study project and trying to configure openvswitch vlans outside libvirt by means of openvswitch itself.

Somehow with interface types 'bridge' and 'network', libvirt does attach domain to the existing port specified in <target dev=''/>, wiping the exixting settings and always deletes this port upon domain shutdown, thus making me loose ovs configuration.

Could you, please, tell me how should I configure an interface

You can set the vlan tag for an interface plugged into an OVS switch with the <vlan> tag: <interface type='bridge'> <source bridge='ovsbr0'/> <virtualport type='openvswitch'> <parameters interfaceid='.....'/> <virtualport> <vlan> <tag id='42'/> </vlan> http://www.libvirt.org/formatdomain.html#elementVlanTag (if you want vlan trunking, you can use <vlan trunk='yes'>, and then can specify multiple <tag> subelements for which vlan tags you want to allow.) If you want a simpler way to have all the guests on a particular switch use the same vlan tag, you can define a libvirt network that points to the OVS switch, set a vlan tag to be used for all guests connecting to that network, then define your guest's interface as <interface type='network'>, pointing to this new network definition. Details for that can be found at: http://www.libvirt.org/formatnetwork.html (search for "openvswitch" and "vlan").

or libvirt itself to avoid this libvirt's greedines.

libvirt 2.4.0

Thak you. Ivan.

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