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[Bug 1687599] Re: Bind 2nd VM to same OVS vhost-user port caused 1st vm
From: |
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Subject: |
[Bug 1687599] Re: Bind 2nd VM to same OVS vhost-user port caused 1st vm traffic broken |
Date: |
Sat, 09 Jan 2021 04:17:43 -0000 |
[Expired for QEMU because there has been no activity for 60 days.]
** Changed in: qemu
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/1687599
Title:
Bind 2nd VM to same OVS vhost-user port caused 1st vm traffic broken
Status in QEMU:
Expired
Bug description:
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
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