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[Openstack] Create VMs with Power architecture(ppc64) on OpenStack running on x86_64 nodes??


Thank you all for the valuable informations. So I will try with one compute
node which has qemu as libvirt_type in nova.conf and then I hope I can host
ppc64 VM's on that node.

On Mon, Nov 19, 2018 at 10:47 PM Sean Mooney <smooney at redhat.com> wrote:

> On Mon, 2018-11-19 at 14:48 -0600, Chris Friesen wrote:
> > On 11/19/2018 10:25 AM, Yedhu Sastri wrote:
> > > Hello All,
> > >
> > > I have some use-cases which I want to test in PowerPC
> > > architecture(ppc64). As I dont have any Power machines I would like to
> > > try it with ppc64 VM's. Is it possible to run these kind of VM's on my
> > > OpenStack cluster(Queens) which runs on X86_64 architecture nodes(OS
> > > RHEL 7)??
> > >
> > > I set the image property architecture=ppc64 to the ppc64 image I
> > > uploaded to glance but no success in launching VM with those images. I
> > > am using KVM as hypervisor(qemu 2.10.0) in my compute nodes and I
> think
> > > it is not built to support power architecture. For testing without
> > > OpenStack I manually built qemu on a x86_64 host with ppc64
> > > support(qemu-ppc64) and then I am able to host the ppc64 VM. But I
> dont
> > > know how to do this on my OpenStack cluster. Whether I need to
> manually
> > > build qemu on compute nodes with ppc64 support or I need to add some
> > > lines in my nova.conf to do this?? Any help to solve this issue would
> be
> > > much appreciated.
> >
> > I think that within an OpenStack cluster you'd have to dedicate a whole
> > compute node to running ppc64 and have it advertise the architecture as
> > ppc64.  Then when you ask for "architecture=ppc64" it should land on
> > that node.
> you know it says it for arm but you might be able to do this by setting
> hw_machine_type
> https://github.com/openstack/glance/blob/master/etc/metadefs/compute-libvirt-image.json#L34
> i know you can set the hw_machine_type to set teh default for all instace
> on a host
>
> https://docs.openstack.org/nova/latest/configuration/config.html#libvirt.hw_machine_type
> but i can rememebr it image property is alys used or if its just used for
> arm as the docs suggest.
>
> the hypervisor_type in the image should be set to qemu to make sure you
> avoid the kvm hosts as they will not work
> for cpu emulation.
>
>
> >
> > If this is for "development, testing or migration of applications to
> > Power" have you checked out these people?  They provide free Power VMs.
> >
> > http://openpower.ic.unicamp.br/minicloud/
> >
> > Chris
> >
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-- 

Thank you for your time and have a nice day,


With kind regards,
Yedhu Sastri
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