Re: [openstack-dev] [Openstack] Some question about image provision in openstack

2013-12-28 Thread Clint Byrum
Excerpts from Pengfei Zhang's message of 2013-12-25 21:47:29 -0800:
> Hi,
>  I come across two question about the image provision and distribute in 
> openstack(nova),
> 1.Afaik, in current version, nova-compute use the curl to download image from 
> glance (or other places). Are there any alternative methods to choose (such 
> torrent)?

We've been looking into alternatives as part of the TripleO project to
deploy OpenStack on top of itself. Torrent-like methods do look
promising.

> 2.In fact, to boot a VM above hypervisor, there is no need to transfer the 
> whole image-file to local. Will the mechanism to transfer the image on demand 
> makes sense?
>

The simplest solution like that today that I know of is to put your
image storage in CEPH, setup Cinder to use CEPH, and then boot from
volume with thin provisioning. The image will never be "transferred",
the root volume will just always live on a writable CEPH snapshot.

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[openstack-dev] [Openstack] Some question about image provision in openstack

2013-12-25 Thread Pengfei Zhang
Hi,
 I come across two question about the image provision and distribute in 
openstack(nova),
1.Afaik, in current version, nova-compute use the curl to download image from 
glance (or other places). Are there any alternative methods to choose (such 
torrent)?
2.In fact, to boot a VM above hypervisor, there is no need to transfer the 
whole image-file to local. Will the mechanism to transfer the image on demand 
makes sense?
 
Thanks,
Pengfei

Have a nice holiday!

Pengfei Zhang
Geek, Programmer, Phd Candidate
Changsha, Hunan, CN
(t) +86 186 8476 1376

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[openstack-dev] [Openstack] Some question about image provision in openstack

2013-12-25 Thread Pengfei Zhang
Hi,
  I come across two question about the image provision and distribute in 
openstack(nova),
1.Afaik, in current version, nova-compute use the curl to download image from 
glance (or other places). Are there any alternative methods to choose (such 
torrent)?
2.In fact, to boot a VM above hypervisor (e.g.,KVM, Xen), there is no need to 
transfer the whole image-file to local. Will the mechanism to transfer the 
image on demand on VM booting process makes sense?
 
Thanks,
Pengfei

Have a nice holiday!

Pengfei Zhang
Geek, Programmer, Phd Candidate
Changsha, Hunan, CN
(t) +86 186 8476 1376___
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