Re: [Openstack-operators] User Survey usage of QEMU (as opposed to KVM) ?

On Wed, May 11, 2016 at 07:30:45PM -0400, Emilien Macchi wrote: :On Tue, May 3, 2016 at 11:43 AM, Matt Riedemann : wrote: :> Another thought is that deployment tools are just copying what devstack :> does, or what shows up in the configs in our dsvm gate jobs, and

Re: [Openstack-operators] User Survey usage of QEMU (as opposed to KVM) ?

On Tue, May 3, 2016 at 11:43 AM, Matt Riedemann wrote: > On 5/3/2016 10:01 AM, Daniel P. Berrange wrote: >> >> Hello Operators, >> >> One of the things that constantly puzzles me when reading the user >> survey results wrt hypervisor is the high number of respondants

Re: [Openstack-operators] User Survey usage of QEMU (as opposed to KVM) ?

On 11 May 2016 at 14:32, Maish Saidel-Keesing wrote: > > On 11/05/16 22:18, Chris Friesen wrote: > > On 05/11/2016 11:46 AM, Ronald Bradford wrote: > > I have been curious as to why as mentioned in the thread virt_type=kvm, > but > os-hypervisors API call states QEMU. > > >

Re: [Openstack-operators] User Survey usage of QEMU (as opposed to KVM) ?

On 05/11/2016 01:29 PM, Robert Starmer wrote: I don't disagree, what we're really getting at is that any lookup (ask the system what it's using on a particular instance, look at the config, look at the output of a nova CLI request, querry via Horizon), should all return the same answer. So one

Re: [Openstack-operators] User Survey usage of QEMU (as opposed to KVM) ?

On 11/05/16 22:18, Chris Friesen wrote: > On 05/11/2016 11:46 AM, Ronald Bradford wrote: >> I have been curious as to why as mentioned in the thread >> virt_type=kvm, but >> os-hypervisors API call states QEMU. > > Arguably in both cases the hypervisor is qemu. When virt_type=kvm we > simply

Re: [Openstack-operators] User Survey usage of QEMU (as opposed to KVM) ?

I don't disagree, what we're really getting at is that any lookup (ask the system what it's using on a particular instance, look at the config, look at the output of a nova CLI request, querry via Horizon), should all return the same answer. So one is a bug (Horizon), the other requires looking

Re: [Openstack-operators] User Survey usage of QEMU (as opposed to KVM) ?

Or we could just fix the problem within OpenStack to report the correct Hypervisor in the first place. This kind of reminds me of a story. Someone was trying to drive down a path on his bicycle, but there were some tacks on the path. So his wheel kept on getting full of holes. So they thought

Re: [Openstack-operators] User Survey usage of QEMU (as opposed to KVM) ?

On 05/11/2016 11:46 AM, Ronald Bradford wrote: I have been curious as to why as mentioned in the thread virt_type=kvm, but os-hypervisors API call states QEMU. Arguably in both cases the hypervisor is qemu. When virt_type=kvm we simply enable some additional acceleration. So rather than

Re: [Openstack-operators] User Survey usage of QEMU (as opposed to KVM) ?

You could just ask for the value of virt_type parameter from a compute host (or the output of something like grep 'virt_type' /etc/nova/nova*) if you are using qemu or kvm. I believe that's how nova figures out what parameters to use when launching an instance. On Wed, May 11, 2016 at 8:39 AM,

Re: [Openstack-operators] User Survey usage of QEMU (as opposed to KVM) ?

In the next user survey - could we clarify that qemu == full software cpu emulation and kvm (qemu/kvm) = hardware accelerated virtualization or some similar phrasing. It's totally possible that people are like: I run both qemu and kvm (thinking that’s qemu/kvm) - when in fact they only run kvm

Re: [Openstack-operators] User Survey usage of QEMU (as opposed to KVM) ?

Does anyone see a good way to fix this to report KVM or QEMU/KVM ? I guess the worry is whether this would count as a bug fix or an incompatible change. Tim On 11/05/16 17:51, "Kashyap Chamarthy" wrote: >On Tue, May 03, 2016 at 02:27:00PM -0500, Sergio Cuellar Valdes

Re: [Openstack-operators] User Survey usage of QEMU (as opposed to KVM) ?

I have been curious as to why as mentioned in the thread virt_type=kvm, but os-hypervisors API call states QEMU. Interestingly this command mentioned (which works on Ubuntu) gives me a FAIL and WARN on my home test setup that runs on physical H/W. $ virt-host-validate QEMU: Checking for

Re: [Openstack-operators] User Survey usage of QEMU (as opposed to KVM) ?

Which still brings me back to the original point. Is this a bug - and should it be reported as such? On 11/05/16 18:51, Kashyap Chamarthy wrote: > On Tue, May 03, 2016 at 02:27:00PM -0500, Sergio Cuellar Valdes wrote: > > [...] > >> I'm confused too about the use of KVM or QEMU In the computes

Re: [Openstack-operators] User Survey usage of QEMU (as opposed to KVM) ?

On Tue, May 03, 2016 at 02:27:00PM -0500, Sergio Cuellar Valdes wrote: [...] > I'm confused too about the use of KVM or QEMU In the computes the > file​/etc/nova/nova-compute.conf has: > > virt_type=kvm > > The output of: > > nova hypervisor-show | grep hypervisor_type > > is: > >

Re: [Openstack-operators] User Survey usage of QEMU (as opposed to KVM) ?

On Tue, May 03, 2016 at 07:06:56PM +, Jared Wilkinson wrote: > So forgive my lack of kvm/qemu knowledge but I couldn’t find anything > on Google on this. If you deployed an instance of a different architecture > than the physical CPU, wouldn’t qemu just emulate the processor (if you > were in

Re: [Openstack-operators] User Survey usage of QEMU (as opposed to KVM) ?

On Tue, May 03, 2016 at 10:20:34PM +0300, Maish Saidel-Keesing wrote: > I would think that the problem is that OpenStack does not really report > back that you are using KVM - it reports that you are using QEMU. > > Even when in nova.conf I have configured virt_type=kvm, when I run nova >

Re: [Openstack-operators] User Survey usage of QEMU (as opposed to KVM) ?

On 3 May 2016 at 10:01, Daniel P. Berrange wrote: > Hello Operators, > > One of the things that constantly puzzles me when reading the user > survey results wrt hypervisor is the high number of respondants > claiming to be using QEMU (as distinct from KVM). > > As a

Re: [Openstack-operators] User Survey usage of QEMU (as opposed to KVM) ?

what you should be looking for is hvm. On Tue, May 3, 2016 at 3:20 PM, Maish Saidel-Keesing wrote: > I would think that the problem is that OpenStack does not really report > back that you are using KVM - it reports that you are using QEMU. > > Even when in nova.conf I have

Re: [Openstack-operators] User Survey usage of QEMU (as opposed to KVM) ?

I would think that the problem is that OpenStack does not really report back that you are using KVM - it reports that you are using QEMU. Even when in nova.conf I have configured virt_type=kvm, when I run nova hypervisor-show XXX | grep hypervisor_type I am presented with the following |

Re: [Openstack-operators] User Survey usage of QEMU (as opposed to KVM) ?

So forgive my lack of kvm/qemu knowledge but I couldn’t find anything on Google on this. If you deployed an instance of a different architecture than the physical CPU, wouldn’t qemu just emulate the processor (if you were in virt_type=kvm) mode, or would libvirt throw some error? Thanks, Jared

Re: [Openstack-operators] User Survey usage of QEMU (as opposed to KVM) ?

On 5/3/2016 10:01 AM, Daniel P. Berrange wrote: Hello Operators, One of the things that constantly puzzles me when reading the user survey results wrt hypervisor is the high number of respondants claiming to be using QEMU (as distinct from KVM). As a reminder, in Nova saying virt_type=qemu

Re: [Openstack-operators] User Survey usage of QEMU (as opposed to KVM) ?

The only reason I can think of is that they are doing nested VMs and don't have the right nesting flag enabled in their base flag. On Tue, May 3, 2016 at 9:01 AM, Daniel P. Berrange wrote: > Hello Operators, > > One of the things that constantly puzzles me when reading the

[Openstack-operators] User Survey usage of QEMU (as opposed to KVM) ?

Hello Operators, One of the things that constantly puzzles me when reading the user survey results wrt hypervisor is the high number of respondants claiming to be using QEMU (as distinct from KVM). As a reminder, in Nova saying virt_type=qemu causes Nova to use plain QEMU with pure CPU emulation