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Re: a flavor with no disk nor ephemeral storage ?

To: hzguanqiang <hzguanqiang@xxxxxxxxxxxxxxxx>
From: Jacques LANDRU <landru@xxxxxxxxxxxxxxxx>
Date: Mon, 22 Jul 2013 17:16:12 +0200 (CEST)
Cc: openstack@xxxxxxxxxxxxxxxxxxx
In-reply-to: <195849504.56338.1374478009687.JavaMail.hzguanqiang@corp.netease.com>
Thread-index: O1trU4Rx12NdI2ZYZMmMJB0JC4l7Dw==
Thread-topic: a flavor with no disk nor ephemeral storage ?

Hi,

>Of course you can. Through command 'nova help flavor-create'， You will see how to make it.
Yes I read the manual before posting.
I can create a flavor  with disk and ephemeral set to zero, but when I start VMs, each one makes a copy of the DVD image under /var/lib/nova/instances/_base. And each instance has a qcow files under /var/lib/nova/instances/instancexxxxxx/

What I need is several diskless virtual appliance clones booting from a single liveDVD iso image.
Is there a simple way to clone virual iso appliances with no extra storage load ?
In my case, I plan to have the liveDVD iso image file on ramdisk, and all diskless virtual appliance clones booting from that single ram located liveDVD.
This behviour is quite easy to implement on libvirt envrionment on a simple workstation, but now I want to transpose on an openstack environment for an "on demand cloning" service.

regards.

Jacques Landru

----- Mail original -----
De: "hzguanqiang" <hzguanqiang@xxxxxxxxxxxxxxxx>
À: "Jacques LANDRU" <landru@xxxxxxxxxxxxxxxx>
Cc: "openstack" <openstack@xxxxxxxxxxxxxxxxxxx>
Envoyé: Lundi 22 Juillet 2013 09:26:43
Objet: Re:  [Openstack] a flavor with no disk nor ephemeral storage ?

On 2013-07-19 21:41, Jacques LANDRU <landru@xxxxxxxxxxxxxxxx> wrote:

>Hi,
>
>For an academic cloud, I plan to deploy virtual lab appliance clones booting from a unique shared iso liveDVD file located on a ramdisk.
>Using "nova flavor-create" command, is there a way to create a new flavor with no disk, nor ephemeral storage for this kind of virtual machines ?
>
>Thanks.
>
>Jacques Landru
>
>    -----oOo-----
> Jacques Landru
>   mel:  landru~hat~telecom-lille.fr
>   tel:  +33 (0)3 2033 5556
>   fax:  +33 (0)3 2033 5598
>
> Telecom Lille
> Cite scientifique, rue G. Marconi, BP20145
> 59653 VILLENEUVE D'ASCQ  Cedex
>  web: http://www.telecom-lille.fr
>  Tel: +33 (0)3 2033 5577 
>  Fax: +33 (0)3 2033 5599 
>    -----oOo-----

 Of course you can. Through command 'nova help flavor-create'， You will see how to make it.

------------------     
Best regards!
GuanQiang
2013-07-22

References

a flavor with no disk nor ephemeral storage ?
From: Jacques LANDRU, 2013-07-19
Re: a flavor with no disk nor ephemeral storage ?
From: hzguanqiang, 2013-07-22