[one-users] Shared datastore only to cluster

[Ruben S. Montero]

Hi Mário

I am not really sure I fully understand your question. So let me briefly
summarize the use of clusters and datasotres:
  * There are 2 datastore types. Images (to store VM disks) and System (to
run the VMs from there). Stopped VMs (disks and checkpoint) are in stored
in the System DS.
  * DS can be either shared among all the clusters (assigned to
CLUSTER_NONE) or assigned to a cluster.

So if you have a stopped guest that needs to be allocated to a different
cluster you should be able to do it as long as all the files are accessible
to both hosts. Otherwise it may not work (if the VM is using persistent
images for example).


Hope it is more clear now, if not come back

Ruben


On Wed, Aug 28, 2013 at 7:09 PM, Mário Reis <mario.reis at ivirgula.com> wrote:

> Hi all,
>
> i'm trying to build a opennebula infrastructure, but i guess i'm missing
> something basic about datastores.
>
> Currently i have 3 ubuntu hosts virtualizing several kvm guests. Created
> another guest and installed Opennebula 4.2 over a Gentoo in this new guest.
> Removed all VMs from the third host, created a cluster in sunstone
> interface, added to it this host. For far so good, the host is monitored
> and showing available CPU/RAM.
>
> Next step was to "import" a qcow2 image from a stopped guest and use it in
> this host. This files and shared across all hosts using ocfs2 over fc luns
> (opennebula guest don't actually have access to them).
>
> So, my problem here is:
>
> Can I add this image files to a datastore that only exists in the cluster
> hosts? It seems that i can't do this without placing them in the frontend
> guest.
>
>
>
>
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>


-- 
-- 
Join us at OpenNebulaConf2013 in Berlin, 24-26 September, 2013
-- 
Ruben S. Montero, PhD
Project co-Lead and Chief Architect
OpenNebula - The Open Source Solution for Data Center Virtualization
www.OpenNebula.org | rsmontero at opennebula.org | @OpenNebula
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