[dpdk-users] OVS Switch with DPDK

Sergey Matov smatov at mirantis.com
Wed Jun 22 08:37:40 CEST 2016


Hello.

Have you done dpdk-binding before adding DPDK interface to your bridge? It
can be done via (your DPDK dir)/tools/dpdk_nic_bind.py script.

2016-06-22 9:23 GMT+03:00 shyam yeduru <yedurushyam at hotmail.com>:

> Hi Team,
>
> We have a setup at our lab to demonstrate DPDK with OVS and With-Out. Here
> are my configuration details and error message.
>
> Hardware : HP DL 380 G8
> OS - Ubuntu 16.0.4
> OVS Package - 2.5
> DPDK has been installed along with OVS
>
> Packages installed : apt-get install openvswitch-switch-dpdk uvtool
> qemu-kvm
>
> Procedure is as follows:
> 1.0 enabled iommu on Kernel
> 2.0 enalbled hugepages
> NR_2M_PAGES=4096">> /etc/dpdk/dpdk.conf
> root at ovskvm1:~# mount | column -t | grep huge
> cgroup                        on  /sys/fs/cgroup/hugetlb
>  type  cgroup
> (rw,nosuid,nodev,noexec,relatime,hugetlb,release_agent=/run/cgmanager/agents/cgm-release-agent.hugetlb,nsroot=/)
> hugetlbfs                     on  /dev/hugepages
>  type  hugetlbfs   (rw,relatime)
> hugetlbfs-kvm                 on  /run/hugepages/kvm
>  type  hugetlbfs   (rw,relatime,mode=775,gid=111)
> nodev                         on  /var/opt/huge
> type  hugetlbfs   (rw,relatime,pagesize=1GB)
> hugetlb                       on  /run/lxcfs/controllers/hugetlb
>  type  cgroup
> (rw,relatime,hugetlb,release_agent=/run/cgmanager/agents/cgm-release-agent
> hugetlb,nsroot=/)
>
> 3.0 OVS conf settings
>
> DPDK_OPTS='--dpdk -c 0x1 -n 4 -m 2048 --vhost-owner libvirt-qemu:kvm
> --vhost-perm 0664'
>
>
> 4.0  Connecting  dpdk0 interface and two guests. We got issue while adding
> dpdko interface
>
> root at ovskvm1:~# ovs-vsctl show
> 0ee7d41d-3f51-43ae-9181-bb23aa81ebc7
>     Bridge "ovsdpdkbr0"
>         Port "vhost-user-2"
>             Interface "vhost-user-2"
>                 type: dpdkvhostuser
>         Port "vhost-user-1"
>             Interface "vhost-user-1"
>                 type: dpdkvhostuser
>         Port "ovsdpdkbr0"
>             Interface "ovsdpdkbr0"
>                 type: internal
>         Port "dpdk0"
>             Interface "dpdk0"
>                 type: dpdk
>                 error: "could not open network device dpdk0 (No such
> device)"
>     ovs_version: "2.5.0"
> root at ovskvm1:~#
>
>  ovs log
>
> root at ovskvm1:~# tailf /var/log/openvswitch/ovs-vswitchd.log
> 2016-06-22T06:10:46.041Z|00015|bridge|INFO|bridge ovsdpdkbr0: added
> interface ovsdpdkbr0 on port 65534
> 2016-06-22T06:10:46.041Z|00016|bridge|INFO|bridge ovsdpdkbr0: using
> datapath ID 00001e82be6ada4d
> 2016-06-22T06:10:46.041Z|00017|connmgr|INFO|ovsdpdkbr0: added service
> controller "punix:/var/run/openvswitch/ovsdpdkbr0.mgmt"
> 2016-06-22T06:10:46.079Z|00018|bridge|INFO|ovs-vswitchd (Open vSwitch)
> 2.5.0
> 2016-06-22T06:10:53.089Z|00019|memory|INFO|183016 kB peak resident set
> size after 10.2 seconds
> 2016-06-22T06:10:53.089Z|00020|memory|INFO|handlers:11 ports:1
> revalidators:5 rules:5
> 2016-06-22T06:18:16.397Z|00021|bridge|INFO|bridge ovsdpdkbr1: added
> interface ovsdpdkbr1 on port 65534
> 2016-06-22T06:18:16.397Z|00022|bridge|INFO|bridge ovsdpdkbr1: using
> datapath ID 00002e9f58d5d440
> 2016-06-22T06:18:16.397Z|00023|connmgr|INFO|ovsdpdkbr1: added service
> controller "punix:/var/run/openvswitch/ovsdpdkbr1.mgmt"
> 2016-06-22T06:18:28.972Z|00024|bridge|WARN|could not open network device
> dpdk0 (No such device)
>
> OVS-DPDK Process:
>
> root at ovskvm1:~# ps -ef|grep ovs|grep dpdk
> root      3568     1  0 12:31 ?        00:00:00 ovs-vswit... --dpdk -c 0x1
> -n 4 -m 2048 --vhost-owner libvirt-qemu:kvm --vhost-perm 0664 --
> unix:/var/run/openvswitch/db.sock -vconsole:emer -vsyslog:err -vfile:info
> --mlockall --no-chdir --log-file=/var/log/openvswitch/ovs-vswitchd.log
> --pidfile=/var/run/openvswitch/ovs-vswitchd.pid --detach --monitor
> root      3569  3568 99 12:31 ?        00:00:07 ovs-vswitchd --dpdk -c 0x1
> -n 4 -m 2048 --vhost-owner libvirt-qemu:kvm --vhost-perm 0664 --
> unix:/var/run/openvswitch/db.sock -vconsole:emer -vsyslog:err -vfile:info
> --mlockall --no-chdir --log-file=/var/log/openvswitch/ovs-vswitchd.log
> --pidfile=/var/run/openvswitch/ovs-vswitchd.pid --detach --monitor
>
> Can some one guide us , Where are we failing and how to over come this
> issue.
>
> Thanks
> Shyam Yeduru
>
>
>
>




-- 
*Best Regards*
*Sergey Matov*
*Mirantis Inc*


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