[Bug 1568627] Re: OpenvSwitch with DPDK brings all VirtIO NICs down, software reboot also doesn't work.

2021-06-28 Thread James Page 
Marking this bug as Fix Released - newer versions of OVS don't slurp all
capable devices by default any longer.

** Changed in: openvswitch (Ubuntu)
   Status: Triaged => Fix Released

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Title:
  OpenvSwitch with DPDK brings all VirtIO NICs down, software reboot
  also doesn't work.

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[Bug 1568627] Re: OpenvSwitch with DPDK brings all VirtIO NICs down, software reboot also doesn't work.

2016-04-11 Thread ChristianEhrhardt 
Setting to Triaged but only low as it is documented, just not in that
conf file.

** Changed in: openvswitch (Ubuntu)
   Status: New => Triaged

** Changed in: openvswitch (Ubuntu)
   Status: Triaged => Invalid

** Changed in: openvswitch (Ubuntu)
   Importance: Undecided => Low

** Changed in: openvswitch (Ubuntu)
   Status: Invalid => Triaged

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Title:
  OpenvSwitch with DPDK brings all VirtIO NICs down, software reboot
  also doesn't work.

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[Bug 1568627] Re: OpenvSwitch with DPDK brings all VirtIO NICs down, software reboot also doesn't work.

2016-04-11 Thread ChristianEhrhardt 
Hi Thiago,
as James said this is a known dpdk behaviour - not special to OpenVswitch.

Any other DPDK tool like l2fwd or such would have killed you just the same.
We documented it in the serverguide.
No release for 16.04 yet but you can take a look at 
http://bazaar.launchpad.net/~ubuntu-core-doc/serverguide/trunk/view/head:/serverguide/C/network-config.xml

Maybe you can bzr branch lp:serverguide and render it for yourself until it is 
released.
It contains all the pitfalls I found so far.

Most of the time we also added notes to the .conf files, but not yet in this 
case.
James - what do you think should we add a warning in 
/etc/default/openvswitch-switch ?

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Title:
  OpenvSwitch with DPDK brings all VirtIO NICs down, software reboot
  also doesn't work.

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Re: [Bug 1568627] Re: OpenvSwitch with DPDK brings all VirtIO NICs down, software reboot also doesn't work.

2016-04-11 Thread Thiago Martins 
Awesome! I'm gonna try it... Thanks James!   :-D

On 11 April 2016 at 04:34, James Page  wrote:

> Hi Thiago
>
> DPDK can use the virtio-pci devices directly without them being bound to
> the userspace driver - as a result, the default configuration will try
> to consume all virtio-pci devices configured on the system; make sure
> the blacklist the primary network adapter so that DPDK does not try to
> use it.
>
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> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1568627
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> Title:
>   OpenvSwitch with DPDK brings all VirtIO NICs down, software reboot
>   also doesn't work.
>
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Title:
  OpenvSwitch with DPDK brings all VirtIO NICs down, software reboot
  also doesn't work.

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[Bug 1568627] Re: OpenvSwitch with DPDK brings all VirtIO NICs down, software reboot also doesn't work.

2016-04-11 Thread James Page 
Hi Thiago

DPDK can use the virtio-pci devices directly without them being bound to
the userspace driver - as a result, the default configuration will try
to consume all virtio-pci devices configured on the system; make sure
the blacklist the primary network adapter so that DPDK does not try to
use it.

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Title:
  OpenvSwitch with DPDK brings all VirtIO NICs down, software reboot
  also doesn't work.

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[Bug 1568627] Re: OpenvSwitch with DPDK brings all VirtIO NICs down, software reboot also doesn't work.

2016-04-11 Thread James Page 
Hi Thiago

DPDK can use the virtio-pci devices directly without them being bound to
the userspace driver - as a result, the default configuration will try
to consume all virtio-pci devices configured on the system; make sure
the blacklist the primary network adapter so that DPDK does not try to
use it.

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Title:
  OpenvSwitch with DPDK brings all VirtIO NICs down, software reboot
  also doesn't work.

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[Bug 1568627] Re: OpenvSwitch with DPDK brings all VirtIO NICs down, software reboot also doesn't work.

2016-04-10 Thread Thiago Martins 
WAIT! I was too fast on reply about Trusty...

On Trusty with Cloud Archive Liberty enabled, and even after this:

update-alternatives --set ovs-vswitchd /usr/lib/openvswitch-switch-dpdk
/ovs-vswitchd-dpdk

And this:

# grep DPDK_OPTS /etc/default/openvswitch-switch 
DPDK_OPTS='--dpdk -c 0x1 -n 4'

The command:

service openvswitch-switch stop
service openvswitch-switch start

 Does NOT bring "ovs-vswitchd" with "dpdk" options!

 So, this test with Trusty is invalid.

 I don't know how to enable OVS with DPDK on Trusty when with Cloud
Archive Liberty. The procedure might be different.

 I'll keep researching about this topic...

Cheers!
Thiago

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Title:
  OpenvSwitch with DPDK brings all VirtIO NICs down, software reboot
  also doesn't work.

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[Bug 1568627] Re: OpenvSwitch with DPDK brings all VirtIO NICs down, software reboot also doesn't work.

2016-04-10 Thread Thiago Martins 
Guys,

 I can confirm that this problem does exists on top of Trusty KVM Guest
with Linux 4.4 (same Xenial kernel), but with DPDK 2.0 and OpenvSwitch
2.4 from Liberty Cloud Archive, it works!!

 At least, the Trusty guest doesn't lose connectivity and soft reboot
works too! Precisely where Xenial fails...

 So, something is wrong with OpenvSwitch 2.5 when with DPDK 2.2 (Xenial
Combo).

 Happy hacking!

Thanks!
Thiago

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Title:
  OpenvSwitch with DPDK brings all VirtIO NICs down, software reboot
  also doesn't work.

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