Wido:
Here is the important part of the XMLDump:
<cpu mode='host-passthrough' check='none' migratable='on'>
<topology sockets='1' dies='1' clusters='1' cores='1' threads='1'/>
<numa>
<cell id='0' cpus='0' memory='524288' unit='KiB'/>
</numa>
</cpu>
Of note: the memory spec is showing 512m instead of my configured 1g.
Let me work on that for a bit.
Ron
On Wed, 2026-04-08 at 23:00 +0200, Wido den Hollander via users wrote:
>
>
> Op 08-04-2026 om 22:50 schreef Ron Gage:
> > Wido:
> >
> > I already have guest.cpu.mode=host-passthrough. Should I be using
> > something else?
> >
>
> No, that should be it actually. Are you sure it's applied properly?
> Check the Libvirt XML of the VM if you see it in there.
>
> virsh list
> virsh dumpxml <vmid>
>
> Wido
>
> > Ron Gage
> >
> >
> > On Wed, 2026-04-08 at 22:39 +0200, Wido den Hollander via users
> > wrote:
> > >
> > >
> > > Op 08-04-2026 om 22:27 schreef Ron Gage:
> > > > Hi Alex:
> > > >
> > > > I am using NFS v4 for both primary and secondary storage.
> > > >
> > >
> > > That's not the problem. The problem is that by default the
> > > CloudStack
> > > Agent doesn't pass a CPU mode/type to Libvirt and thus Libvirt
> > > emulates
> > > a Qemu Virtual CPU.
> > >
> > > CentOS 9 doesn't like this and panics.
> > >
> > > Take a look at this setting:
> > > https://github.com/apache/cloudstack/blob/main/agent/conf/agent.properties#L187
> > >
> > > Wido
> > >
> > > > Ron
> > > >
> > > >
> > > > On 4/8/26 4:24 PM, Alex Evonosky wrote:
> > > > > What type of primary storage is being used?
> > > > >
> > > > > On Wed, Apr 8, 2026 at 3:57 PM Ron Gage <[email protected]>
> > > > > wrote:
> > > > >
> > > > > Hi all:
> > > > >
> > > > > This problem has me completely stumped. I am on a new
> > > > > 4.21
> > > > > install on CentOS Stream 9 for both management and host.
> > > > > When I
> > > > > boot a Linux ISO, I get something similar to this:
> > > > >
> > > > > The above is an instance on Centos Stream 9. I have
> > > > > similar
> > > > > misfortune with Debian 12.10 and 13.
> > > > >
> > > > > Has anyone encountered something like this before? Any
> > > > > hints
> > > > > on
> > > > > tracing this down perhaps?
> > > > >
> > > > > The only thing I have tried so far was to specify
> > > > > guest.cpu.mode=host-passthrough in the agent.properties
> > > > > on
> > > > > the KVM
> > > > > host.
> > > > >
> > > > > Thank you!
> > > > >
> > > > > Ron Gage
> > > > >
> > > > >
> >
--
Ron Gage
Westland, MI
