[one-users] Working with Ceph datastore - How to tell do linked snapshot for new VM?

[Campbell, Bill]

I submitted a request quite a while ago upon implementation of the driver to utilize RBD Format 2 images (which permit the usage of copy-on-write snapshots). It is on the roadmap to be implemented on improving Ceph integration (as you'll find that Ceph support is broken when using anything newer than the default libvirt-bin and qemu-kvm packages included with Ubuntu 12.04, even if using packages from the Ubuntu Cloud Archive). 

http://dev.opennebula.org/issues/1796#change-4486 

----- Original Message -----

From: "Igor Laskovy" <igor.laskovy at gmail.com> 
To: "Kenneth" <kenneth at apolloglobal.net> 
Cc: users at lists.opennebula.org 
Sent: Tuesday, September 3, 2013 7:20:14 AM 
Subject: Re: [one-users] Working with Ceph datastore - How to tell do linked snapshot for new VM? 

Thanks for reply! 

> The allocation time will depend on how fast your ceph network is. 

Actually, I asking about eliminate copy operation. In Ceph you can start images form snapshots and if you boot 100 VMs from one Image you will basically using only one large disk and 100 snapshots with data that will changed. This behaviour can be expected in opennebula somehow? 


On Tue, Sep 3, 2013 at 1:09 PM, Kenneth < kenneth at apolloglobal.net > wrote: 





Are you cloning/uploading an existing image to open nebula?. 

I'm using ceph datastore too. My kvm template image is a 21GB qcow2 (and raw) image but only 1.5GB of space is taken up. (that is before uploading to nebula). 

Images that will be stored in ceph will be converted to RBD and when nebula "sees" that a this disk is 21GB, it will be allocated. The allocation time will depend on how fast your ceph network is. 

And have you tried creating an empty datablock? Create an empty datablock in the ceph datastore and then install linux on that datablock, the allocation of an empty datablock is faster, though you'll need to install the OS afterwards. 




On 09/03/2013 05:57 PM, Igor Laskovy wrote: 

<blockquote>

Anybody? ;) 


On Sat, Aug 31, 2013 at 5:27 PM, Igor Laskovy < igor.laskovy at gmail.com > wrote: 

<blockquote>

Hello all! 
When I create VMs from image which located on ceph datastore, OpenNebula do full clone of that image - it takes precious time. Is it possible to tell do something like just quick snapshot and than working with it with VM? 
-- 
Igor Laskovy 
facebook.com/igor.laskovy 
studiogrizzly.com 





-- 
Igor Laskovy 
facebook.com/igor.laskovy 
studiogrizzly.com 

_______________________________________________
Users mailing list Users at lists.opennebula.org http://lists.opennebula.org/listinfo.cgi/users-opennebula.org 

</blockquote>

-- 
Thanks,
Kenneth 

_______________________________________________ 
Users mailing list 
Users at lists.opennebula.org 
http://lists.opennebula.org/listinfo.cgi/users-opennebula.org 


</blockquote>




-- 
Igor Laskovy 
facebook.com/igor.laskovy 
studiogrizzly.com 

_______________________________________________ 
Users mailing list 
Users at lists.opennebula.org 
http://lists.opennebula.org/listinfo.cgi/users-opennebula.org 


NOTICE: Protect the information in this message in accordance with the company's security policies. If you received this message in error, immediately notify the sender and destroy all copies.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.opennebula.org/pipermail/users-opennebula.org/attachments/20130903/1efcdf38/attachment-0002.htm>