[ovirt-users] Qemu prevents vm from starting up properly

[M R]

Hello!

Thank you very much! I had misunderstood how it was suppose to be
written in qemu_cmdline. There was a typo in syntax and error log
revealed it. It is working IF I use ["-spice",
"tls-ciphers=DES-CBC3-SHA"].
So I believe that installation is correctly done.

Though, my problem still exists.
This is what I have been trying to use for qemu_cmdline:
["-cpu", "kvm=off, hv_vendor_id=sometext"]
It does not work and most likely is incorrectly written.

I understood that qemu commands are often exported into xml files and
the command I'm trying to write is the following:

<features>
    <hyperv>
      <vendor_id state='on' value='customvalue'/>
    </hyperv>
    <kvm>
      <hidden state='on'/>
</kvm>
</features>

How do I write this in custom properties for qemu_cmdline?


best regards

Mikko



On 27 Sep 2017 3:27 pm, "Yedidyah Bar David" <didi at redhat.com> wrote:

> On Wed, Sep 27, 2017 at 1:14 PM, M R <gr8nextmail at gmail.com> wrote:
> > Hello!
> >
> > I did check logs from hosts, but didnt notice anything that would help
> me. I
> > can copy paste logs later.
> >
> > I was not trying to get qemu crash vm.
> > I'm trying to add new functionalities with qemu.
> >
> > I wasnt sure if my syntax was correct, so I copy pasted the example
> command
> > for spice from that website. And it still behaves similarly.
> >
> > My conclusion is that qemu cmdline is setup wrong or it's not working at
> > all. But I dont know how to check that.
>
> Please check/share /var/log/libvirt/qemu/* and /var/log/vdsm/* . Thanks.
>
> >
> > On 27 Sep 2017 12:32, "Yedidyah Bar David" <didi at redhat.com> wrote:
> >>
> >> On Wed, Sep 27, 2017 at 11:32 AM, M R <gr8nextmail at gmail.com> wrote:
> >> > Hello!
> >> >
> >> > I have followed instructions in
> >> > https://www.ovirt.org/develop/developer-guide/vdsm/hook/qemucmdline/
> >> >
> >> > After adding any command for qemu cmdline, vm will try to start, but
> >> > will
> >> > immediately shutdown.
> >> >
> >> > Is this a bug?
> >>
> >> If you intended, with the params you passed, to make qemu fail, for
> >> whatever
> >> reason (debugging qemu?), then it's not a bug :-) Otherwise, it is, but
> we
> >> can't know where.
> >>
> >> > or is the information in the link insufficient?
> >> > If it would be possible to confirm this and if there's a way to fix, I
> >> > would
> >> > really like to have step by step guide of how to get this working.
> >>
> >> Did you check relevant logs? vdsm/libvirt?
> >>
> >> Best,
> >> --
> >> Didi
>
>
>
> --
> Didi
>
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