Re: [dpdk-users] docker container, EAL: failed to initialize virtio_user0 device

["Neeraj Tandon (netandon)" <netandon@cisco.com>]

Check the  /var/run/usvhost . Do you have the socket created there ?   Is that visible from docker.

Sometime back when I used a container, I passed a mac address for DPDK Parameters when starting the dpdk test_pmd application in container.

Regards,
Neeraj


On 5/20/17, 8:53 PM, "users on behalf of Wu, Xiaoban" <users-bounces@dpdk.org on behalf of Xiaoban_Wu@student.uml.edu> wrote:

    Hi DPDK Users,
    
    
    I am trying to use docker container and ovs(2.6.0)-dpdk(16.07) to setup a test. I want to setup two docker containers, each of them will use a virtual device (socket) created by the ovs-dpdk. The final purpose would let the two containers talk to each other.
    
    
    Setup ovs-dpdk
    
      1.  ovsdb-tool create $ovs-dir/etc/openvswitch/conf.db $ovs-dir/share/openvswitch/vswitch.ovsschema
      2.  ovsdb-server --remote=punix:$ovs-dir/var/run/openvswitch/db.sock --remote=db:Open_vSwitch,Open_vSwitch,manager_options --pidfile --detach
      3.  ovs-vsctl --no-wait set Open_vSwitch . other_config:dpdk-init=true
      4.  ovs-vsctl --no-wait set Open_vSwitch . other_config:dpdk-socket-mem="512,512"
      5.  ovs-vswitchd  unix:$ovs-dir/var/run/openvswitch/db.sock --pidfile --detach  --log-file=$ovs-dir/temp.log
    
    Setup bridge and ports
    
      1.  ovs-vsctl add-br br0 -- set bridge br0 datapath_type=netdev
      2.  ovs-vsctl add-port br0 vhost-user1 -- set Interface vhost-user1 type=dpdkvhostuser ofport_request=1
      3.  ovs-vsctl add-port br0 vhost-user2 -- set Interface vhost-user2 type=dpdkvhostuser ofport_request=2
      4.  ovs-ofctl add-flow br0 priority=1000,in_port=1,actions=output:2
      5.  ovs-ofctl add-flow br0 priority=1000,in_port=2,actions=output:1
    
    Run the docker container
    
      1.  docker run -it --privileged -v $ovs-dir/var/run/openvswitch/vhost-user1:/var/run/usvhost -v /mnt/huge/:/dev/hugepages/ $docker-image bash
    
    Run the dpdk application in the docker container
    
      1.  $dpdk-app -c 0x01 --socket-mem=128,0 --vdev=virtio_user0,path=/var/run/usvhost --file-prefix="docker1"
    
    However, I encountered this error
    PMD: vhost_user_setup(): connect error, Connection refused
    PMD: virtio_user_dev_init(): backend set up fails
    PMD: virtio_user_pmd_devinit(): virtio_user_dev_init fails
    EAL: failed to initialize virtio_user0 device
    
    It seems like the application in the docker container cannot connect the socket created by the ovs-dpdk.
    
    Can anybody please help me and point out some possible solutions? Looking forward to your reply. Thanks very much for your help.
    
    Best wishes,
    Xiaoban