osdir.com

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

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


(not sure if my answer has been sent, sorry if duplicate)
I don't touch ppc for a while but AFAIK this should work as long as you run
full emulation (qemu, not kvm) as libvirt_type in nova.conf and get the
qemu-system-ppc64le installed in the compute node. Assume also you get the
ppc64le image to launch your instance. Expect poor performance though.

On Mon, Nov 19, 2018 at 4:12 PM Sean Mooney <smooney at redhat.com> wrote:

> adding openstack dev.
> On Mon, 2018-11-19 at 18:08 +0000, Sean Mooney wrote:
> > On Mon, 2018-11-19 at 11:57 -0500, Ken D'Ambrosio wrote:
> > > On 2018-11-19 11:25, 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'm not 100% sure, but I'm 95% sure that the answer to your question
> is "No."  While there's much emulation that
> > > occurs, the CPU isn't so much emulated, but more abstracted.
> Constructing and running a modern CPU in software
> > > would
> > > be non-trivial.
> >
> > you can do this but not with kvm.
> > you need to revert the virt dirver in the nova.conf back to qemu to
> disable kvm to allow emulation of other
> > plathforms.
> > that said i have only emulated power on x86_64 using libvirt or qemu
> idrectly never with openstack but i belive we
> > used
> > to support this i just hav enot done it personally.
> > >
> > > -Ken
> > >
> > > > 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.
> > > >
> > > >
> > > > --
> > > > Thank you for your time and have a nice day,
> > > >
> > > > With kind regards,
> > > > Yedhu Sastri
> > > >
> > > > _______________________________________________
> > > > Mailing list:
> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
> > > > Post to     : openstack at lists.openstack.org
> > > > Unsubscribe :
> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
> > >
> > > _______________________________________________
> > > Mailing list:
> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
> > > Post to     : openstack at lists.openstack.org
> > > Unsubscribe :
> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
>
> __________________________________________________________________________
> OpenStack Development Mailing List (not for usage questions)
> Unsubscribe: OpenStack-dev-request at lists.openstack.org?subject:unsubscribe
> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
>


-- 
Rafael Folco
Senior Software Engineer
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstack.org/pipermail/openstack/attachments/20181119/f2ee5ee9/attachment.html>