ooking through old bug tickets... is this still an issue with the latest
version of QEMU? Or could we close this ticket nowadays? And what is a
"question ping between 2 vm error" ?
** Changed in: qemu
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1708617
Title:
qemu2.9 meet a question using reconnect about ovs+dpdk
Status in QEMU:
Incomplete
Bug description:
env:
qemu-2.9
dpdk-16.11
ovs-2.6.1
host os:Linux compute 3.10.0-514.el7.x86_64 #1 SMP Tue Nov 22 16:42:41 UTC
2016 x86_64 x86_64 x86_64 GNU/Linux
guest os is same with host
1. ovs service is normal
2. start 2 qemu vm, using vhostuser port as server
taskset 0x3f qemu-system-x86_64 -cpu host -smp 2,cores=2 -drive
file=$QCOW2_IMAGE -m 4096M --enable-kvm -name $VM_NAME -nographic -object
memory-backend-file,id=mem,size=$GUEST_MEM,mem-path=/dev/hugepages,share=on
-numa node,memdev=mem -mem-prealloc -chardev
socket,id=char1,path=$VHOST_SOCK_DIR/dpdkvhostuser0,server -netdev
type=vhost-user,id=mynet1,chardev=char1,vhostforce,queues=2 -device
virtio-net-pci,mac=00:00:00:00:00:01,netdev=mynet1,mq=on,vectors=6 -nographic
-vnc :0
qemu-system-x86_64: -chardev
socket,id=char1,path=/usr/local/var/run/openvswitch/dpdkvhostuser0,server: QEMU
waiting for connection on:
disconnected:unix:/usr/local/var/run/openvswitch/dpdkvhostuser0,server
taskset 0x3f qemu-system-x86_64 -cpu host -smp 2,cores=2 -drive
file=$QCOW2_IMAGE -m 4096M --enable-kvm -name $VM_NAME -nographic -object
memory-backend-file,id=mem,size=$GUEST_MEM,mem-path=/dev/hugepages,share=on
-numa node,memdev=mem -mem-prealloc -chardev
socket,id=char1,path=$VHOST_SOCK_DIR/dpdkvhostuser0,server -netdev
type=vhost-user,id=mynet1,chardev=char1,vhostforce,queues=2 -device
virtio-net-pci,mac=00:00:00:00:00:01,netdev=mynet1,mq=on,vectors=6 -nographic
-vnc :0
qemu-system-x86_64: -chardev
socket,id=char1,path=/usr/local/var/run/openvswitch/dpdkvhostuser0,server: QEMU
waiting for connection on:
disconnected:unix:/usr/local/var/run/openvswitch/dpdkvhostuser1,server
3. add br and vhostuser port as client
ovs-vsctl add-br br1 -- set bridge br1 datapath_type=netdev
ovs-vsctl add-port br1 dpdkvhostuser0 -- set Interface dpdkvhostuser0
type=dpdkvhostuserclient
options:vhost-server-path="/usr/local/var/run/openvswitch/dpdkvhostuser0"
ovs-vsctl add-port br1 dpdkvhostuser1 -- set Interface dpdkvhostuser1
type=dpdkvhostuserclient
options:vhost-server-path="/usr/local/var/run/openvswitch/dpdkvhostuser1"
4. ping between 2 vm is ok
5. restart ovs process
systemctl restart openvswitch
6. there is a question ping between 2 vm error
7. change qemu from 2.9 to 2.7, everything become ok
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