Wido (and everyone else who is interested): The problem stemmed from memory overprovisioning. I set the factor to 2 and that apparently didn't go so well with things. Setting the memory overprovisioning back to 1 allowed the VMs to start up properly.
Ron Gage 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
