[ovs-discuss] [dpdk-dev] DPDK OVS on Ubuntu 14.04# Issue's Resolved# Successfully setup DPDK OVS with vhostuser
Abhijeet Karve
abhijeet.karve at tcs.com
Thu Dec 17 12:40:32 UTC 2015
Hi Przemek,
Thank you so much for sharing the ref guide.
Would be appreciate if clear one doubt.
At present we are setting up openstack kilo interactively and further
replacing ovs with ovs-dpdk enabled.
Once the above setup done, We are creating instance in openstack and
passing that instance id to QEMU command line which further passes the
vhost-user sockets to instances, enabling the DPDK libraries in it.
Isn't this the correct way of integrating ovs-dpdk with openstack?
Thanks & Regards
Abhijeet Karve
From: "Czesnowicz, Przemyslaw" <przemyslaw.czesnowicz at intel.com>
To: Abhijeet Karve <abhijeet.karve at tcs.com>
Cc: "dev at dpdk.org" <dev at dpdk.org>, "discuss at openvswitch.org"
<discuss at openvswitch.org>, "Gray, Mark D" <mark.d.gray at intel.com>
Date: 12/17/2015 05:27 PM
Subject: RE: [dpdk-dev] DPDK OVS on Ubuntu 14.04# Issue's Resolved#
Successfully setup DPDK OVS with vhostuser
HI Abhijeet,
For Kilo you need to use ovsdpdk mechanism driver and a matching agent to
integrate ovs-dpdk with OpenStack.
The guide you are following only talks about running ovs-dpdk not how it
should be integrated with OpenStack.
Please follow this guide:
https://github.com/openstack/networking-ovs-dpdk/blob/stable/kilo/doc/source/getstarted/ubuntu.rst
Best regards
Przemek
From: Abhijeet Karve [mailto:abhijeet.karve at tcs.com]
Sent: Wednesday, December 16, 2015 9:37 AM
To: Czesnowicz, Przemyslaw
Cc: dev at dpdk.org; discuss at openvswitch.org; Gray, Mark D
Subject: RE: [dpdk-dev] DPDK OVS on Ubuntu 14.04# Issue's Resolved#
Successfully setup DPDK OVS with vhostuser
Hi Przemek,
We have configured the accelerated data path between a physical interface
to the VM using openvswitch netdev-dpdk with vhost-user support. The VM
created with this special data path and vhost library, I am calling as
DPDK instance.
If assigning ip manually to the newly created Cirros VM instance, We are
able to make 2 VM's to communicate on the same compute node. Else it's not
associating any ip through DHCP though DHCP is in compute node only.
Yes it's a compute + controller node setup and we are using following
software platform on compute node:
_____________
Openstack: Kilo
Distribution: Ubuntu 14.04
OVS Version: 2.4.0
DPDK 2.0.0
_____________
We are following the intel guide
https://software.intel.com/en-us/blogs/2015/06/09/building-vhost-user-for-ovs-today-using-dpdk-200
When doing "ovs-vsctl show" in compute node, it shows below output:
_____________________________________________
ovs-vsctl show
c2ec29a5-992d-4875-8adc-1265c23e0304
Bridge br-ex
Port phy-br-ex
Interface phy-br-ex
type: patch
options: {peer=int-br-ex}
Port br-ex
Interface br-ex
type: internal
Bridge br-tun
fail_mode: secure
Port br-tun
Interface br-tun
type: internal
Port patch-int
Interface patch-int
type: patch
options: {peer=patch-tun}
Bridge br-int
fail_mode: secure
Port "qvo0ae19a43-b6"
tag: 2
Interface "qvo0ae19a43-b6"
Port br-int
Interface br-int
type: internal
Port "qvo31c89856-a2"
tag: 1
Interface "qvo31c89856-a2"
Port patch-tun
Interface patch-tun
type: patch
options: {peer=patch-int}
Port int-br-ex
Interface int-br-ex
type: patch
options: {peer=phy-br-ex}
Port "qvo97fef28a-ec"
tag: 2
Interface "qvo97fef28a-ec"
Bridge br-dpdk
Port br-dpdk
Interface br-dpdk
type: internal
Bridge "br0"
Port "br0"
Interface "br0"
type: internal
Port "dpdk0"
Interface "dpdk0"
type: dpdk
Port "vhost-user-2"
Interface "vhost-user-2"
type: dpdkvhostuser
Port "vhost-user-0"
Interface "vhost-user-0"
type: dpdkvhostuser
Port "vhost-user-1"
Interface "vhost-user-1"
type: dpdkvhostuser
ovs_version: "2.4.0"
root at dpdk:~#
_____________________________________________
Open flows output in bridge in compute node are as below:
_____________________________________________
root at dpdk:~# ovs-ofctl dump-flows br-tun
NXST_FLOW reply (xid=0x4):
cookie=0x0, duration=71796.741s, table=0, n_packets=519, n_bytes=33794,
idle_age=19982, hard_age=65534, priority=1,in_port=1 actions=resubmit(,2)
cookie=0x0, duration=71796.700s, table=0, n_packets=0, n_bytes=0,
idle_age=65534, hard_age=65534, priority=0 actions=drop
cookie=0x0, duration=71796.649s, table=2, n_packets=0, n_bytes=0,
idle_age=65534, hard_age=65534,
priority=0,dl_dst=00:00:00:00:00:00/01:00:00:00:00:00
actions=resubmit(,20)
cookie=0x0, duration=71796.610s, table=2, n_packets=519, n_bytes=33794,
idle_age=19982, hard_age=65534,
priority=0,dl_dst=01:00:00:00:00:00/01:00:00:00:00:00
actions=resubmit(,22)
cookie=0x0, duration=71794.631s, table=3, n_packets=0, n_bytes=0,
idle_age=65534, hard_age=65534, priority=1,tun_id=0x5c
actions=mod_vlan_vid:2,resubmit(,10)
cookie=0x0, duration=71794.316s, table=3, n_packets=0, n_bytes=0,
idle_age=65534, hard_age=65534, priority=1,tun_id=0x57
actions=mod_vlan_vid:1,resubmit(,10)
cookie=0x0, duration=71796.565s, table=3, n_packets=0, n_bytes=0,
idle_age=65534, hard_age=65534, priority=0 actions=drop
cookie=0x0, duration=71796.522s, table=4, n_packets=0, n_bytes=0,
idle_age=65534, hard_age=65534, priority=0 actions=drop
cookie=0x0, duration=71796.481s, table=10, n_packets=0, n_bytes=0,
idle_age=65534, hard_age=65534, priority=1
actions=learn(table=20,hard_timeout=300,priority=1,NXM_OF_VLAN_TCI[0..11],NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[],load:0->NXM_OF_VLAN_TCI[],load:NXM_NX_TUN_ID[]->NXM_NX_TUN_ID[],output:NXM_OF_IN_PORT[]),output:1
cookie=0x0, duration=71796.439s, table=20, n_packets=0, n_bytes=0,
idle_age=65534, hard_age=65534, priority=0 actions=resubmit(,22)
cookie=0x0, duration=71796.398s, table=22, n_packets=519, n_bytes=33794,
idle_age=19982, hard_age=65534, priority=0 actions=drop
root at dpdk:~#
root at dpdk:~#
root at dpdk:~#
root at dpdk:~# ovs-ofctl dump-flows br-tun
int NXST_FLOW reply (xid=0x4):
cookie=0x0, duration=71801.275s, table=0, n_packets=0, n_bytes=0,
idle_age=65534, hard_age=65534, priority=2,in_port=10 actions=drop
cookie=0x0, duration=71801.862s, table=0, n_packets=661, n_bytes=48912,
idle_age=19981, hard_age=65534, priority=1 actions=NORMAL
cookie=0x0, duration=71801.817s, table=23, n_packets=0, n_bytes=0,
idle_age=65534, hard_age=65534, priority=0 actions=drop
root at dpdk:~#
_____________________________________________
Further we don't know what all the network changes(Packet Flow addition)
if required for associating IP address through the DHCP.
Would be really appreciate if have clarity on DHCP flow establishment.
Thanks & Regards
Abhijeet Karve
From: "Czesnowicz, Przemyslaw" <przemyslaw.czesnowicz at intel.com>
To: Abhijeet Karve <abhijeet.karve at tcs.com>, "Gray, Mark D" <
mark.d.gray at intel.com>
Cc: "dev at dpdk.org" <dev at dpdk.org>, "discuss at openvswitch.org" <
discuss at openvswitch.org>
Date: 12/15/2015 09:13 PM
Subject: RE: [dpdk-dev] DPDK OVS on Ubuntu 14.04# Issue's Resolved#
Successfully setup DPDK OVS with vhostuser
Hi Abhijeet,
If you answer below questions it will help me understand your problem.
What do you mean by DPDK instance?
Are you able to communicate with other VM's on the same compute node?
Can you check if the DHCP requests arrive on the controller node? (I'm
assuming this is at least compute+ controller setup)
Best regards
Przemek
> -----Original Message-----
> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Abhijeet Karve
> Sent: Tuesday, December 15, 2015 5:56 AM
> To: Gray, Mark D
> Cc: dev at dpdk.org; discuss at openvswitch.org
> Subject: Re: [dpdk-dev] DPDK OVS on Ubuntu 14.04# Issue's Resolved#
> Successfully setup DPDK OVS with vhostuser
>
> Dear All,
>
> After seting up system boot parameters as shown below, the issue is
> resolved now & we are able to successfully setup openvswitch netdev-dpdk
> with vhostuser support.
>
> __________________________________________________________
> _______________________________________________________
> Setup 2 sets of huge pages with different sizes. One for Vhost and
another
> for Guest VM.
> Edit /etc/default/grub.
> GRUB_CMDLINE_LINUX="iommu=pt intel_iommu=on hugepagesz=1G
> hugepages=10 hugepagesz=2M hugepages=4096"
> # update-grub
> - Mount the huge pages into different directory.
> # sudo mount -t hugetlbfs nodev /mnt/huge_2M -o pagesize=2M
> # sudo mount -t hugetlbfs nodev /mnt/huge_1G -o pagesize=1G
> __________________________________________________________
> _______________________________________________________
>
> At present we are facing an issue in Testing DPDK application on setup.
In our
> scenario, We have DPDK instance launched on top of the Openstack Kilo
> compute node. Not able to assign DHCP IP from controller.
>
>
> Thanks & Regards
> Abhijeet Karve
>
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