On 07/22/2014 07:14 AM, Mike Tutkowski wrote:
Hi,
I'm thinking Wido knows the answer to this, but - of course - anyone feel
free to chime in. :)
Hehe
I was looking at this video of Wido's from CCCEU13 in Amsterdam:
https://www.youtube.com/watch?v=57voBP_zdf8&feature=youtu.be
In it, Wido talks about cloning a template on the Ceph cluster, then
deploying multiple VMs from the clones.
It's done automatically by the KVM Agent.
The first time a template is downloaded from Secondary Storage to
Primary Storage it's a full copy.
After that the KVM Agent creates a RBD snapshot called
"cloudstack-base-snap" and that snapshot is used for all operations
afterwards.
The KVM Agent knows there is a snapshot called "cloudstack-base-snap"
and that snapshot is then used when a new Instance is deployed from that
template.
There is nothing special you have to do. Simply deploy a template and
it's done for you.
I was wondering if we have documentation that would show me how this
actually works in CloudStack (first from a user's standpoint and then from
a developer's standpoint).
See the explanation above!
Wido
Thanks!
