[Starlingx-discuss] WG: cpu mode

[von Hoesslin, Volker]

this would be very nice, but if i try to launch a vm with a flavor that contain the given extra-spec, i get this error:

No valid host was found. There are not enough hosts available. compute-0: (VCpuModelFilter) Passthrough VCPU Model only available on 'kvm' hosts, compute-1: (VCpuModelFilter) Passthrough VCPU Model only available on 'kvm' hosts

volker...
________________________________________
Von: Chris Friesen [chris.friesen at windriver.com]
Gesendet: Montag, 21. Januar 2019 16:09
An: starlingx-discuss at lists.starlingx.io
Betreff: Re: [Starlingx-discuss] WG: cpu mode

You shouldn't need to modify nova.conf.

With the current codebase you should be able to specify
"hw:cpu_model=Passthrough" in the flavor extra-specs.

Chris

On 1/21/2019 8:30 AM, von Hoesslin, Volker wrote:
> i have set "host-passthrough" in "/etc/nova/nova.conf"
>
> =================================
> [DEFAULT]
> libvirt_cpu_mode = host-passthrough
>
> [libvirt]
> cpu_mode = host-passthrough
> =================================
>
> and restart nove service:
> # service nova-compute restart
>
> for now it works! "lscpu" on guest os shows me the AMD EPIC with all features, very nice. but after reboot the compute-node, the auto-config script change this setting back to "none":
>
> [libvirt]
> cpu_mode = none
>
> and passthrough did not work anymore :( so how can i prevent this auto-config or define my new config as persistent?



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