Thank you Ruben,<br>I did that way you just described earlier this week this new setup.<br>My environment will grow and i am have some particularities on it as well, even the storage thing.<br><br>I am doing some customizations for my needs pontually, but also I have found some people in the list that faecd some issues like mine regarding an OpenFlow based network.<br>
<br>Again, thanks for the heads up, it was exactly what I got, was tyring to avoid some erroneous setup for a near future.<br><br>Cheers.<br><br><div class="gmail_quote">On Thu, Oct 4, 2012 at 6:07 PM, Ruben S. Montero <span dir="ltr"><<a href="mailto:rsmontero@opennebula.org" target="_blank">rsmontero@opennebula.org</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Rodolfo<br>
<br>
Yes you email was posted in the right place ;)<br>
<br>
Some thoughts, inlined....<br>
<div class="im"><br>
><br>
> My main concern is, is it possible to have multiple datastore types inside<br>
> the cluster (like adding future nodes to act as storage or any other NAS/SAN<br>
> device?)<br>
> Is there a good way to use this set up looking for future upgrades in terms<br>
> of resources?<br>
<br>
</div>Yes it is possible to have multiple storage backends, that was the<br>
main reason to introduce the datastore abstraction.<br>
<br>
In order to ease the upgrade to add more datastores (even of the same<br>
type, e.g. you buy a new NAS server and want to use both NFS<br>
datastores), I'd recommend not to mount/export the whole<br>
var/lib/one/datastore/ directory, but just the each datastore<br>
directory individually.<br>
<br>
For example if you have an image datastore (e.g. 100), export<br>
/var/lib/one/datastore/100 in your NFS server (that directory will be<br>
the datastore storage area) and mount that under<br>
/var/lib/one/datastore/100 in the hosts. For 3.6, do not mount it<br>
elsewhere and link it there (there is a bug solved in 3.8). And the<br>
same for the system datastore 0 (take a look at this picture [1]).<br>
Note that the system datastore only needs to be added to the hosts<br>
that run VMs.<br>
<br>
[1] <a href="http://opennebula.org/_detail/documentation:rel3.4:fs_shared.png?id=documentation%3Arel3.6%3Afs_ds" target="_blank">http://opennebula.org/_detail/documentation:rel3.4:fs_shared.png?id=documentation%3Arel3.6%3Afs_ds</a><br>
<div class="im"><br>
><br>
> *Other point, the other reason i am asking in which one to use is: Is it<br>
> possible to extend the created LVs on the fly without compromising the<br>
> running instance?<br>
> Regarding that performance is not a big concern right now.<br>
<br>
</div>This would need some hacking, Take a look at<br>
<br>
<a href="http://lists.opennebula.org/pipermail/users-opennebula.org/2012-September/020357.html" target="_blank">http://lists.opennebula.org/pipermail/users-opennebula.org/2012-September/020357.html</a><br>
<div class="im"><br>
><br>
> I hope I was a little bit concise in here. :)<br>
> I am stuck in a crossroad in which datastore type to use and any advice,<br>
> insight or tip would be very welcome and very helpful!<br>
<br>
</div>For your simple setup I'd recommend to go for the FS datastore, using<br>
NFS. The details in the documentation should be enough to set up this<br>
[2,3], but come back if you need more help<br>
<br>
[2] System datastore: <a href="http://opennebula.org/documentation:rel3.6:system_ds" target="_blank">http://opennebula.org/documentation:rel3.6:system_ds</a><br>
[3] FS Datastore: <a href="http://opennebula.org/documentation:rel3.6:fs_ds" target="_blank">http://opennebula.org/documentation:rel3.6:fs_ds</a><br>
<br>
<br>
Good Luck<br>
<br>
Best<br>
<br>
Ruben<br>
<div class="im">><br>
> Thanks in advance!<br>
><br>
> Cheers,<br>
><br>
> --<br>
> Have you tried turning it off and on again?<br>
><br>
</div>> _______________________________________________<br>
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><br>
<span class="HOEnZb"><font color="#888888"><br>
--<br>
Ruben S. Montero, PhD<br>
Project co-Lead and Chief Architect<br>
OpenNebula - The Open Source Solution for Data Center Virtualization<br>
<a href="http://www.OpenNebula.org" target="_blank">www.OpenNebula.org</a> | <a href="mailto:rsmontero@opennebula.org">rsmontero@opennebula.org</a> | @OpenNebula<br>
</font></span></blockquote></div><br><br clear="all"><br>-- <br>Have you tried turning it off and on again?<br>