Re: [openstack-dev] [nova-compute][nova][libvirt] Extending Nova-Compute for image prefetching

Hi all, I'm glad to see much interest in this feature. I will prepare and submit nova specs by the end of this week. On Oct 23, 2015 5:47 PM, "Markus Zoeller" wrote: > Mathieu Gagné wrote on 10/22/2015 08:08:07 PM: > > > Could you maybe add a short

Re: [openstack-dev] [nova-compute][nova][libvirt] Extending Nova-Compute for image prefetching

Mathieu Gagné wrote on 10/22/2015 08:08:07 PM: > > Could you maybe add a short explanation what the use case is? IOW, > > when and why do I (in whatever role) prefetch images? > > > > This previous OpenStack Summit presentation at Paris is a great example > of use case: >

Re: [openstack-dev] [nova-compute][nova][libvirt] Extending Nova-Compute for image prefetching

tack-dev@lists.openstack.org> >> Date: 10/21/2015 06:44 AM >> Subject: Re: [openstack-dev] [nova-compute][nova][libvirt] Extending >> Nova-Compute for image prefetching >> >> Hi, Alberto, >> >> I'm really interested in your proposal, have you alread

Re: [openstack-dev] [nova-compute][nova][libvirt] Extending Nova-Compute for image prefetching

Subject: Re: [openstack-dev] [nova-compute][nova][libvirt] Extending > Nova-Compute for image prefetching > > Hi, Alberto, > > I'm really interested in your proposal, have you already submitted > your spec? or is there any topic for you to have a discussion with > Nova team i

Re: [openstack-dev] [nova-compute][nova][libvirt] Extending Nova-Compute for image prefetching

Hi, Alberto, I'm really interested in your proposal, have you already submitted your spec? or is there any topic for you to have a discussion with Nova team in design summit? I wonder what if the nova compute host use shared storage backend, like NFS or Ceph? I have another suggestion, we can

Re: [openstack-dev] [nova-compute][nova][libvirt] Extending Nova-Compute for image prefetching

On 10 October 2015 at 09:35, Alberto Geniola wrote: > Hi Michael, > > and thank you for your answer. > > Indeed, what I want to do is to add methods to the ImageCache.py module > (listing, adding, deleting). So far, this module only takes care of image > deletion: this

Re: [openstack-dev] [nova-compute][nova][libvirt] Extending Nova-Compute for image prefetching

Hi Michael, and thank you for your answer. Indeed, what I want to do is to add methods to the ImageCache.py module (listing, adding, deleting). So far, this module only takes care of image deletion: this represents the "cache" of images. Now, I want to populate the cache with some images on the

[openstack-dev] [nova-compute][nova][libvirt] Extending Nova-Compute for image prefetching

Hi all, I'm considering to extend the Nova-Compute API in order to provide image-prefetching capabilities to OS. In order to allow image prefetching, I ended up with the need to add three different APIs on the nova-compute nodes: 1. Trigger an image prefetching 2. List prefetched images

Re: [openstack-dev] [nova-compute][nova][libvirt] Extending Nova-Compute for image prefetching

I think I'd rephrase your definition of pre-fetched to be honest -- something more like "images on this hypervisor node without a currently running instance". So, your operations would become: - trigger an image prefetching - list unused base images (and perhaps when they were last used) -