[Openstack] [Neutron][SRIOV][docs] Enabling SRIOV on OpenStack Juno step-by-step guide

Sam Stoelinga sammiestoel at gmail.com
Mon Jul 20 13:49:39 UTC 2015


I think it's a lot clearer already, I also made a minor modification to
SRIOV agent part. Next to that I will see if I can add the content to
OpenStack networking manual under advanced configuration. Have filed a bug
against openstack-manuals here:
https://bugs.launchpad.net/openstack-manuals/+bug/1476242 will move forward
if bug get's consensus that content is ok to be added to networking guide.

Sam

On Mon, Jul 20, 2015 at 6:56 PM, Moshe Levi <moshele at mellanox.com> wrote:

> Hi,
>
> I have update the SR-IOV wiki
> https://wiki.openstack.org/wiki/SR-IOV-Passthrough-For-Networking
> Let me know if it clearer now.
>
> Thanks,
>         Moshe Levi.
>
> > -----Original Message-----
> > From: Andreas Scheuring [mailto:scheuran at linux.vnet.ibm.com]
> > Sent: Monday, July 20, 2015 12:34 PM
> > To: Sam Stoelinga
> > Cc: Moshe Levi; openstack at lists.openstack.org
> > Subject: Re: [Openstack] [Neutron][SRIOV][docs] Enabling SRIOV on
> > OpenStack Juno step-by-step guide
> >
> > That's right.
> >
> > But the firewall_driver = NoopFirewallDriver is an agent configuration,
> so if
> > you would have the sriov-agent configured with this driver, you still
> could
> > configure an ovs agent with another driver I guess. Does that make sense?
> > If so, maybe we could add this information to the wiki as well!
> >
> > Thanks!
> >
> > Andreas
> >
> >
> >
> > On Mo, 2015-07-20 at 16:58 +0800, Sam Stoelinga wrote:
> > > I want to add that I'm not using the NoopFirewall as I'm using
> > > agent_required = False. So all instances that are not using SRIOV can
> > > still use security groups like normal. Instances that are using SRIOV
> > > won't have security groups applied though.
> > >
> > > On Mon, Jul 20, 2015 at 3:21 PM, Moshe Levi <moshele at mellanox.com>
> > > wrote:
> > >
> > >
> > >         > -----Original Message-----
> > >         > From: Andreas Scheuring [mailto:scheuran at linux.vnet.ibm.com]
> > >         > Sent: Monday, July 20, 2015 10:04 AM
> > >         > To: Moshe Levi
> > >         > Cc: Sam Stoelinga; openstack at lists.openstack.org
> > >         > Subject: Re: [Openstack] [Neutron][SRIOV][docs] Enabling
> > >         SRIOV on
> > >         > OpenStack Juno step-by-step guide
> > >         >
> > >         > +1 for updating the wiki
> > >         > +1 for adding a section to the docs
> > >         >
> > >         >
> > >         > Moshe,
> > >         > what about the firewall support Sam mentioned? I assume
> > >         fwaas is
> > >         > supported, as it runs on the network node which uses ovs,
> > >         but Security
> > >         > Groups are not working as you're using the
> > >         NoopFirewallDriver, right?
> > >         Yes that is correct. I will update that as well in the wiki.
> > >
> > >         > Or is there another FW driver that could be used?
> > >         >
> > >         > Thanks
> > >         >
> > >         >
> > >         >
> > >         > On So, 2015-07-19 at 08:12 +0000, Moshe Levi wrote:
> > >         > > See my comments inline
> > >         > >
> > >         > >
> > >         > >
> > >         > > From: Sam Stoelinga [mailto:sammiestoel at gmail.com]
> > >         > > Sent: Sunday, July 19, 2015 10:37 AM
> > >         > > To: Moshe Levi
> > >         > > Cc: openstack at lists.openstack.org
> > >         > > Subject: Re: [Openstack] [Neutron][SRIOV][docs] Enabling
> > >         SRIOV on
> > >         > > OpenStack Juno step-by-step guide
> > >         > >
> > >         > >
> > >         > >
> > >         > >
> > >         > > I think it was not fair to say it's not up to date. It
> > >         seems it's up
> > >         > > to date, but current downsides of existing OpenStack wikis
> > >         on SRIOV
> > >         > > are missing info, many different Wikis and hard to consume
> > >         the info:
> > >         > >
> > >         > >
> > >         > > 1.
> > >
> https://wiki.openstack.org/wiki/SR-IOV-Passthrough-For-Networking
> > >         > >
> > >         > >
> > >         > > 2. https://wiki.openstack.org/wiki/Nova-neutron-sriov
> > >         > >
> > >         > >
> > >         > > 3.
> > >         https://wiki.openstack.org/wiki/PCI_passthrough_SRIOV_support
> > >         > >
> > >         > >
> > >         > > 4. https://wiki.openstack.org/wiki/Pci_passthrough
> > >         > >
> > >         > >
> > >         > >
> > >         > > [ML] – I think the only wiki users should be using is
> > >         > >
> > >
> https://wiki.openstack.org/wiki/SR-IOV-Passthrough-For-Networking
> > >         > >  [2],[3] are the blueprints and [4] is PCI-Pass-through
> > >         without SR-IOV
> > >         > > and it refer to [1] which is good.
> > >         > >
> > >         > >
> > >         > >
> > >         > >
> > >         > > Things that I noticed that were missing / could be better:
> > >         > >
> > >         > >
> > >         > > 1.     Adding PCIDeviceFilter to nova-scheduler
> > >         > >
> > >         > > [ML] I think you mean the PciPassthroughFilter and you are
> > >         correct indeed
> > >         > it is missing. I will update the wiki.
> > >         > > 2.     How to enable VFs on compute nodes
> > >         > >
> > >         > > [ML] – This  vendor specific but we can add links to
> > >         vendor wiki page
> > >         > > on how to configure their NIC to support SR-IOV
> > >         > >
> > >         > >
> > >         > > 3. This wiki:
> > >         https://wiki.openstack.org/wiki/Nova-neutron-sriov
> > >         > > contains incorrect information.
> > >         > >
> > >         > >
> > >         > > Current wrong: "neutron port-create <net-uuid-from-step-1>
> > >         --name
> > >         > > sriov_port --vnic-type direct "
> > >         > >
> > >         > >
> > >         > > should be "neutron port-create <net-uuid-from-step-1>
> > >         --name
> > >         > > sriov_port --binding:vnic_type direct"
> > >         > >
> > >         > > [ML] – this is blueprint but I will check if I can update
> > >         it.
> > >         > >
> > >         > >
> > >         > > 3.     Make it more clear that agent_required = False is
> > >         totally fine
> > >         > > and may be better. From what I read you have to disable
> > >         the firewall
> > >         > > functionality if you enable sriov-agent? Not sure if that
> > >         > > understanding is correct.
> > >         > >
> > >         > > [ML] – I agree this is totally need clarification. The
> > >         > > agent_required=False is used when you have Intel NIC that
> > >         doesn’t
> > >         > > support admin up/down  change. SR-IOV NIC that support
> > >         admin up/down
> > >         > > change should be configured with agent_required =True.
> > >         > >
> > >         > > I will update the wiki explaining that flag.  (by the way
> > >         we hope to
> > >         > > change it in liberty and deprecate the agent_required
> > >         flag)
> > >         > >
> > >         > >
> > >         > >
> > >         > >
> > >         > >
> > >         > > I would prefer this information to have release bound
> > >         documentation in
> > >         > > for example the Networking
> > >         > > Guide: http://docs.openstack.org/networking-guide/ or the
> > >         Cloud
> > >         > > Administrator
> > >         > > Guide:
> > >         http://docs.openstack.org/admin-guide-cloud/content/
> > >         > >
> > >         > > [ML] – Ok, I guess this is required change in
> > >         > > openstack/openstack-manuals repository. Can you help and
> > >         adding
> > >         > > documentations  there? Just put me as review.  If not I
> > >         will try do it
> > >         > > myself or find someone in Mellanox.
> > >         > >
> > >         > >
> > >         > >
> > >         > >
> > >         > > I believe that using the pci sys interface is vendor
> > >         compatible. Would
> > >         > > be great if you could confirm. Could you try testing $
> > >         echo '7'
> > >         > > > /sys/class/net/eth3/device/sriov_numvfs on a mellanox
> > >         card?
> > >         > >
> > >         > >
> > >         > > This way we don't have to write vendor specific docs on
> > >         enabling VFs
> > >         > > :)
> > >         > >
> > >         > >
> > >         > > When using modprobe ixgbe max_vfs=7 it tells you that
> > >         using max_vfs is
> > >         > > deprecated and that the pci sys interface should be used.
> > >         That's how I
> > >         > > found out about this.
> > >         > >
> > >         > > [ML] – unfortunately it is not generic  in Melllanox you
> > >         need to
> > >         > > configure number of VFs and number of probes (also Single
> > >         Port  or
> > >         > > Duel Port ) it is more complicateL
> > >         > >
> > >         > > see https://community.mellanox.com/docs/DOC-1484
> > >         > >
> > >         > >
> > >         > >
> > >         > >
> > >         > > On Sun, Jul 19, 2015 at 2:44 PM, Moshe Levi
> > >         <moshele at mellanox.com>
> > >         > > wrote:
> > >         > >
> > >         > >         Hi Sam,
> > >         > >
> > >         > >
> > >         > >
> > >         > >         Can you explain why you think that the
> > >         > >
> > >
> https://wiki.openstack.org/wiki/SR-IOV-Passthrough-For-Networking
> > >         > is out of date?
> > >         > >
> > >         > >         Moreover you blog explain how to configure SR-IOV
> > >         on Intel
> > >         > >         NIC, but keep in mind Neutron SRIOV is generic and
> > >         can support
> > >         > >         any other vendors such  as Mellanox.
> > >         > >
> > >         > >         Maybe will should add links to how to configure
> > >         SR-IOV NIC for
> > >         > >         several  Vendors. We can start with Mellanox and
> > >         Intel NIC.
> > >         > >         What do you think?
> > >         > >
> > >         > >
> > >         > >
> > >         > >
> > >         > >
> > >         > >         From: Sam Stoelinga [mailto:sammiestoel at gmail.com]
> > >         > >         Sent: Saturday, July 18, 2015 5:55 PM
> > >         > >         To: openstack at lists.openstack.org
> > >         > >         Subject: [Openstack] [Neutron][SRIOV][docs]
> > >         Enabling SRIOV on
> > >         > >         OpenStack Juno step-by-step guide
> > >         > >
> > >         > >
> > >         > >
> > >         > >
> > >         > >         Hi networking gurus,
> > >         > >
> > >         > >
> > >         > >
> > >         > >
> > >         > >         While it may be easy for many of you to enable
> > >         Neutron SRIOV
> > >         > >         on OpenStack it wasn't a smooth ride for me. I
> > >         documented
> > >         > >         exactly which steps were required to enable SRIOV
> > >         on OpenStack
> > >         > >         on my
> > >         > >         blog:
> > >         > >
> > >         http://samos-it.com/posts/sriov-openstack-juno-fuel-6-1.html
> > >         > >
> > >         > >
> > >         > >
> > >         > >
> > >         > >
> > >         > >         It seems there is no official documentation yet
> > >         other than 2
> > >         > >         out of date wiki pages. I would like take the
> > >         content of my
> > >         > >         blog post to official OpenStack docs if you
> > >         guys/girls think
> > >         > >         it's useful for the broader audience.
> > >         > >
> > >         > >
> > >         > >
> > >         > >
> > >         > >
> > >         > >         Regards,
> > >         > >
> > >         > >
> > >         > >         Sam Stoelinga
> > >         > >
> > >         > >
> > >         > >
> > >         > >
> > >         > >
> > >         > >
> > >         > >
> > >         > >
> > >         > >
> > >         > >
> > >         > >
> > >         > > _______________________________________________
> > >         > > Mailing list:
> > >         http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
> > >         > > Post to     : openstack at lists.openstack.org
> > >         > > Unsubscribe :
> > >         > >
> > >         http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
> > >         >
> > >         > --
> > >         > Andreas
> > >         > (IRC: scheuran)
> > >         >
> > >
> > >
> > >
> > >
> >
> > --
> > Andreas
> > (IRC: scheuran)
> >
>
>
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