libvirt users - Oct 2017 - Re: Need to increase the rx and tx buffer size of my interface

On 10/26/2017 10:38 AM, Ashish Kurian wrote:
> Hi Yalan and Michal,
> 
> Thank you for your response. So what I understand is that I can change
> rx_queue size even if I use direct type interface and qemu driver as long
> as the driver is virtio. Am I right? 
Yes.
> If that is the case why am I getting
> the error saying that
> 
> error: XML document failed to validate against schema: Unable to validate
> doc against /usr/share/libvirt/schemas/domain.rng
> Extra element devices in interleave
> Element domain failed to validate content
What's your libvirt version? For rx_queue_size you need 2.3.0 or newer.
For tx_queue_size you need 3.7.0 or newer (not that there's one yet).
> 
> for the following xml config? Btw I changed vepa to bridged mode hoping it
> would help me. Also note that I tried the following without any driver name
> and it still failed.
> 
> 
> <interface type='direct'>
>       <mac address='52:54:00:72:f9:eb'/>
>       <source dev='enp7s0f0' mode='bridge'/>
>       <model type='virtio'/>
>       <driver name='qemu' queues='5'
rx_queue_size='512'>
>         <host csum='off' gso='off' tso4='off'
tso6='off' ecn='off'
> ufo='off' mrg_rxbuf='off'/>
>         <guest csum='off' tso4='off' tso6='off'
ecn='off' ufo='off'/>
>       </driver>
> 
This works for me. I'm running recent git.

Michal

Hi Michal,

Mine is

iplab@iceman:~$ libvirtd --version
libvirtd (libvirt) 1.3.1

I think this can be the issue. I will update and try again



Best Regards,
Ashish Kurian

On Thu, Oct 26, 2017 at 10:46 AM, Michal Privoznik <mprivozn@redhat.com>
wrote:
> On 10/26/2017 10:38 AM, Ashish Kurian wrote:
> > Hi Yalan and Michal,
> >
> > Thank you for your response. So what I understand is that I can change
> > rx_queue size even if I use direct type interface and qemu driver as
long
> > as the driver is virtio. Am I right?
>
> Yes.
>
> > If that is the case why am I getting
> > the error saying that
> >
> > error: XML document failed to validate against schema: Unable to
validate
> > doc against /usr/share/libvirt/schemas/domain.rng
> > Extra element devices in interleave
> > Element domain failed to validate content
>
> What's your libvirt version? For rx_queue_size you need 2.3.0 or newer.
> For tx_queue_size you need 3.7.0 or newer (not that there's one yet).
>
> >
> > for the following xml config? Btw I changed vepa to bridged mode
hoping
> it
> > would help me. Also note that I tried the following without any driver
> name
> > and it still failed.
> >
> >
> > <interface type='direct'>
> >       <mac address='52:54:00:72:f9:eb'/>
> >       <source dev='enp7s0f0' mode='bridge'/>
> >       <model type='virtio'/>
> >       <driver name='qemu' queues='5'
rx_queue_size='512'>
> >         <host csum='off' gso='off'
tso4='off' tso6='off' ecn='off'
> > ufo='off' mrg_rxbuf='off'/>
> >         <guest csum='off' tso4='off'
tso6='off' ecn='off' ufo='off'/>
> >       </driver>
> >
>
> This works for me. I'm running recent git.
>
> Michal
>

Hi Michal,

I installed the latest version from the git and did run the libvirt from
the new directory using /home/to/your/checkout/daemon/libvirtd

But I still see that the version is 1.3.1. I have also stopped the already
running libvirt daemon and ran the new daemon from the directory and it is
showing 1.3.1

Best Regards,
Ashish Kurian

On Thu, Oct 26, 2017 at 10:50 AM, Ashish Kurian <ashishbnv@gmail.com>
wrote:
> Hi Michal,
>
> Mine is
>
> iplab@iceman:~$ libvirtd --version
> libvirtd (libvirt) 1.3.1
>
> I think this can be the issue. I will update and try again
>
>
>
> Best Regards,
> Ashish Kurian
>
> On Thu, Oct 26, 2017 at 10:46 AM, Michal Privoznik
<mprivozn@redhat.com>
> wrote:
>
>> On 10/26/2017 10:38 AM, Ashish Kurian wrote:
>> > Hi Yalan and Michal,
>> >
>> > Thank you for your response. So what I understand is that I can
change
>> > rx_queue size even if I use direct type interface and qemu driver
as
>> long
>> > as the driver is virtio. Am I right?
>>
>> Yes.
>>
>> > If that is the case why am I getting
>> > the error saying that
>> >
>> > error: XML document failed to validate against schema: Unable to
>> validate
>> > doc against /usr/share/libvirt/schemas/domain.rng
>> > Extra element devices in interleave
>> > Element domain failed to validate content
>>
>> What's your libvirt version? For rx_queue_size you need 2.3.0 or
newer.
>> For tx_queue_size you need 3.7.0 or newer (not that there's one
yet).
>>
>> >
>> > for the following xml config? Btw I changed vepa to bridged mode
hoping
>> it
>> > would help me. Also note that I tried the following without any
driver
>> name
>> > and it still failed.
>> >
>> >
>> > <interface type='direct'>
>> >       <mac address='52:54:00:72:f9:eb'/>
>> >       <source dev='enp7s0f0' mode='bridge'/>
>> >       <model type='virtio'/>
>> >       <driver name='qemu' queues='5'
rx_queue_size='512'>
>> >         <host csum='off' gso='off'
tso4='off' tso6='off' ecn='off'
>> > ufo='off' mrg_rxbuf='off'/>
>> >         <guest csum='off' tso4='off'
tso6='off' ecn='off' ufo='off'/>
>> >       </driver>
>> >
>>
>> This works for me. I'm running recent git.
>>
>> Michal
>>
>
>