libvirt users - Apr 2020 - Re: [Query] Facing issue in build libvirt6.0 on ubuntu 1804

Hi Michel,

Thanks for quick update.

  Weird. I have slightly older version and it works for me. Maybe
configure is picking something else, some weird binary/python script?

   * =>* I have python 3.6 version, is it required latest version e.g
Python 3.8 ?


 Ideally, you would construct the domain XML to match the command line
and then use 'virsh define' to store the XML in libvirt. From that point
on, libvirt will know about the domain and you can use all libvirt APIs
to control it.

   * =>*   could you please share sample xml & commands for reference to
try above procedure.
           Few Qemu parameters are as follows,
          -m 2048 -smp 2 -M q35
          -enable-kvm
          --cpu host

Regards,
Babu B
On Thu, Apr 30, 2020 at 4:33 PM Michal Privoznik <mprivozn@redhat.com>
wrote:
> On 4/30/20 12:53 PM, Ramesh B wrote:
> > Hi Michal,
> >
> > Please find the details below,
> > rst2html5 1.10.6 (Docutils 0.16 [release], Python 3.6.9, on linux)
> >
>
> Weird. I have slightly older version and it works for me. Maybe
> configure is picking something else, some weird binary/python script?
>
> >
> > is there any other way to access/control the guest os running on top
> QEMU ?
>
>
> Ideally, you would construct the domain XML to match the command line
> and then use 'virsh define' to store the XML in libvirt. From that
point
> on, libvirt will know about the domain and you can use all libvirt APIs
> to control it.
> Unless your cmd line is super complicated then usually virt-install
> --import in combination with --print-xml allows you to converge into the
> current config.
>
> Michal
>
>

On 4/30/20 2:26 PM, Ramesh B wrote:
> Hi Michel,
> 
> Thanks for quick update.
> 
>    Weird. I have slightly older version and it works for me. Maybe
> configure is picking something else, some weird binary/python script?
> 
> *=>* I have python 3.6 version, is it required latest version e.g Python
> 3.8 ?
No. I meant that perhaps configure was picking the script from say 
/usr/local/bin, e.g. some local, self installed version which is broken.
> 
> 
>   Ideally, you would construct the domain XML to match the command line
> and then use 'virsh define' to store the XML in libvirt. From that
point
> on, libvirt will know about the domain and you can use all libvirt APIs
> to control it.
> 
> *=>*   could you please share sample xml & commands for reference to
try
> above procedure.
>             Few Qemu parameters are as follows,
>            -m 2048 -smp 2 -M q35
>            -enable-kvm
>            --cpu host
<domain type='kvm>
   <name>fedora</name>
   <memory unit='GiB'>2</memory>
   <vcpu>2</vcpu>
   <os>
     <type arch='x86_64' machine='q35'>hvm</type>
   </os>
   <cpu mode='host-passthrough' check='none'>
     <topology sockets='1' dies='1' cores='2'
threads='2'/>
   </cpu>
   <devices>
     <emulator>/usr/bin/qemu-system-x86_64</emulator>
   </devices>
</domain>

Michal

Thanks, I'll check it out.

On Thu, Apr 30, 2020, 6:02 PM Michal Privoznik <mprivozn@redhat.com>
wrote:
> On 4/30/20 2:26 PM, Ramesh B wrote:
> > Hi Michel,
> >
> > Thanks for quick update.
> >
> >    Weird. I have slightly older version and it works for me. Maybe
> > configure is picking something else, some weird binary/python script?
> >
> > *=>* I have python 3.6 version, is it required latest version e.g
Python
> > 3.8 ?
>
> No. I meant that perhaps configure was picking the script from say
> /usr/local/bin, e.g. some local, self installed version which is broken.
>
> >
> >
> >   Ideally, you would construct the domain XML to match the command
line
> > and then use 'virsh define' to store the XML in libvirt. From
that point
> > on, libvirt will know about the domain and you can use all libvirt
APIs
> > to control it.
> >
> > *=>*   could you please share sample xml & commands for
reference to try
> > above procedure.
> >             Few Qemu parameters are as follows,
> >            -m 2048 -smp 2 -M q35
> >            -enable-kvm
> >            --cpu host
>
> <domain type='kvm>
>    <name>fedora</name>
>    <memory unit='GiB'>2</memory>
>    <vcpu>2</vcpu>
>    <os>
>      <type arch='x86_64'
machine='q35'>hvm</type>
>    </os>
>    <cpu mode='host-passthrough' check='none'>
>      <topology sockets='1' dies='1' cores='2'
threads='2'/>
>    </cpu>
>    <devices>
>      <emulator>/usr/bin/qemu-system-x86_64</emulator>
>    </devices>
> </domain>
>
> Michal
>
>