https://rwmj.wordpress.com/2010/07/17/virtio-balloon/

https://docs.openvswitch.org/en/latest/faq/issues/

OVS[edit]

ovs-vsctl add-port swglobal vxlan_hv -- set interface vxlan_hv type=vxlan options:remote_ip=172.16.3.1 options:key=flow
ovs-vsctl set int swhv0 mtu_request=2000

ovs-vsctl add-port swglobal vxlan_hv2 -- set interface vxlan_hv2 type=vxlan options:remote_ip=172.16.3.11 options:key=flow
ovs-vsctl set int swglobal mtu_request=2000
ovs-vsctl set int swhv0 mtu_request=2000

hv0:~# virsh dumpxml gateway 
   <interface type='bridge'>
     <model type='virtio'/>
     <mtu size='2000'/>
     <alias name='net0'/>
   </interface>
   <interface type='bridge'>
     <model type='virtio'/>
     <mtu size='2000'/>
   </interface>

hv0:~# virsh dumpxml hv2 
   <interface type='bridge'>
     <model type='virtio'/>
     <mtu size='2000'/>
   </interface>

ovn-nbctl set-connection ptcp:6641
ovn-sbctl set-connection ptcp:6642

ovs-vsctl set Open_vSwitch . external_ids:ovn-remote="tcp:172.16.16.40:6642" external_ids:ovn-nb="tcp:172.16.16.40:6641" external_ids:ovn-encap-ip=172.16.16.11 external_ids:ovn-encap-type=vxlan
ovs-vsctl set Open_vSwitch . \
 external_ids:ovn-remote="tcp:$CENTRAL_IP:6642" \
 external_ids:ovn-nb="tcp:$CENTRAL_IP:6641" \
 external_ids:ovn-encap-ip=$LOCAL_IP \
 external_ids:ovn-encap-type="$ENCAP_TYPE"

ovn-nbctl ls-add sw0
ovn-nbctl lsp-add sw0 sw0-port1

cat /etc/modprobe.d/kvm_intel.conf
options kvm-intel nested=1
options kvm-intel enable_shadow_vmcs=1
options kvm-intel enable_apicv=1
options kvm-intel ept=1

TODO[edit]

https://access.redhat.com/solutions/732773
https://www.linux-kvm.org/page/Projects/auto-ballooning