Bind 2nd VM to same OVS vhost-user port caused 1st vm traffic broken

[steeven]

Binding 2nd VM to same OVS vhost-user port caused 1st vm traffic broken. If it illegal to share same vhost port, how about the first VM open the path exclusively?

#OVS side to create the vhost-user port:
ovs-vsctl add-br br0 -- set bridge br0 datapath_type=netdev
ovs-vsctl add-port br0 phy0 -- set Interface phy0 type=dpdk options:dpdk-devargs=0000:0a:00.0
ovs-vsctl add-port br0 dpdkvhostuser0 -- set Interface dpdkvhostuser0 type=dpdkvhostuser

#QEMU VM1
qemu-system-x86_64 -name vm1 -cpu host -enable-kvm -m 3072 -drive file=/opt/ubuntu1.qcow2 -numa node,memdev=mem -mem-prealloc -smp sockets=1,cores=2 -object memory-backend-file,id=mem,size=3072m,mem-path=/dev/hugepages,share=on -chardev socket,id=char0,path=/usr/local/var/run/openvswitch/dpdkvhostuser0 -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce -device virtio-net-pci,mac=00:00:00:00:00:01,netdev=mynet1,mrg_rxbuf=off

#VM2
qemu-system-x86_64 -name vm2 -cpu host -enable-kvm -m 3072 -drive file=/opt/ubuntu2.qcow2 -numa node,memdev=mem -mem-prealloc -smp sockets=1,cores=2 -object memory-backend-file,id=mem,size=3072m,mem-path=/dev/hugepages,share=on -chardev socket,id=char0,path=/usr/local/var/run/openvswitch/dpdkvhostuser0 -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce -device virtio-net-pci,mac=00:00:00:00:00:01,netdev=mynet1,mrg_rxbuf=off

[Thomas Huth (th-huth)]

The QEMU project is currently considering to move its bug tracking to another system. For this we need to know which bugs are still valid and which could be closed already. Thus we are setting older bugs to "Incomplete" now.
If you still think this bug report here is valid, then please switch the state back to "New" within the next 60 days, otherwise this report will be marked as "Expired". Thank you and sorry for the inconvenience.

[Launchpad Janitor (janitor)]

[Expired for QEMU because there has been no activity for 60 days.]