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<span style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:11pt; color:black">Even though the each hosts already see them as SAN disks, they need to be mounted like nfs volumes on each EACh host because of the method for OpenNebula?
<br>
<br>
And each time we add new SAN disks, we just add another link to each ESX host?<br>
<br>
<br>
<br>
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Sent from my Android phone using TouchDown (www.nitrodesk.com)<br>
<br>
<span style="color:black">-----Original Message----- <br>
<b>From:</b> Tino Vazquez [cvazquez@c12g.com]<br>
<b>Received:</b> Monday, 01 Jul 2013, 12:27pm<br>
<b>To:</b> Michael Curran [michael.curran@connectsolutions.com]<br>
<b>CC:</b> users@lists.opennebula.org [users@lists.opennebula.org]<br>
<b>Subject:</b> Re: [one-users] datastore and san disks<br>
<br>
</span></span></div>
<font size="2"><span style="font-size:10pt;">
<div class="PlainText">Hi Michael,<br>
<br>
> Treating the env. as SAN disks, I don’t need a datastore on the OpenNebula VM? I just need to share a volume of some sorts on the ESXi hosts? Im not getting this clearly<br>
<br>
That is correct, for the configuration you are describing you will<br>
need to use the OpenNebula datastore and transfer VMFS drivers.<br>
<br>
* The datastore drivers are in charge of staging images from<br>
different sources to the images datastore.<br>
* The transfer drivers deals with moving the images from the images<br>
datastores to the system datastore (where the running VM images are<br>
stored).<br>
<br>
In particular, the datastore VMFS drivers have one attribute<br>
(BRDIGE_LIST) that describes the ESXs to act as gateways to stage the<br>
images in images datastores (they will be picked in a round robin<br>
fashion). For this reason, the OpenNebula front-end doesn't need to<br>
mount any datastores (plus, it would be tricky to manage a VMFS volume<br>
from a linux distribution).<br>
<br>
> And it also reads like my SAN disks should be specifically assigned to each ESXi hosts – our production env. has 100’s of SAN disks and they are shared to all ESXi hosts – that seems a bit strange<br>
<br>
You need to mount in each host all the datastores where you store<br>
images that you want to run VMs from in that particular host. That is,<br>
if you have 100 different disks you can have a 100 different images<br>
datastores. You can chose to mount all 100 in all your ESX hosts, or<br>
you can group the ESX hosts that are going to share certain images<br>
datastores in the same cluster. OpenNebula will deduce from the VM<br>
definition in which cluster that VM should be placed, so the images<br>
that conform the VM can be pulled from the images datastores that hold<br>
them.<br>
<br>
I hope the above clarifies your questions. If they don't, please come<br>
back with your doubts and we will do our best to clarify them.<br>
<br>
Regards,<br>
<br>
-Tino<br>
--<br>
Constantino Vázquez Blanco, PhD, MSc<br>
C12G Labs - OpenNebula for the Enterprise<br>
<a href="http://www.c12g.com">www.c12g.com</a> | cvazquez@c12g.com | @C12G<br>
<br>
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On Mon, Jul 1, 2013 at 2:42 PM, Michael Curran<br>
<michael.curran@connectsolutions.com> wrote:<br>
> Hello ---<br>
><br>
><br>
><br>
> I am working through setting up a test environment for OpenNebula , and most<br>
> of it has been exceptionally straight-forward and simple. However, working<br>
> through the datastore assignment has been a bit tricky, because the<br>
> documentation reads as if all the SAN has to be assigned to specific nodes<br>
> within the configuration, and it is shared to all nodes.<br>
><br>
><br>
><br>
> I am using vmware esxi 5.1 for testing and we have a rather robust VMware<br>
> environment already, and are looking to leverage OpenNebula to improve our<br>
> ability to stand up new VMs with less user interaction and speeding up the<br>
> process with the tasks that OpenNebula can easily help automate and improve<br>
><br>
><br>
><br>
> My test environment has the following<br>
><br>
><br>
><br>
> 1) OpenNebula VM for management<br>
><br>
> 2) 2 ESXi 5.1 hosts<br>
><br>
> 3) 3 Datastores shared to both nodes as iSCSI attached devices<br>
><br>
><br>
><br>
> Treating the env. as SAN disks, I don’t need a datastore on the OpenNebula<br>
> VM? I just need to share a volume of some sorts on the ESXi hosts? Im not<br>
> getting this clearly<br>
><br>
><br>
><br>
> And it also reads like my SAN disks should be specifically assigned to each<br>
> ESXi hosts – our production env. has 100’s of SAN disks and they are shared<br>
> to all ESXi hosts – that seems a bit strange<br>
><br>
><br>
><br>
> Could someone help me understand what I am missing here so I can complete<br>
> the build of my test env.?<br>
><br>
><br>
><br>
> Michael Curran | connectsolutions | Lead Network Architect<br>
><br>
> Phone 614.568.2285 | Mobile 614.403.6320 | <a href="http://www.connectsolutions.com">
www.connectsolutions.com</a><br>
><br>
><br>
><br>
><br>
> _______________________________________________<br>
> Users mailing list<br>
> Users@lists.opennebula.org<br>
> <a href="http://lists.opennebula.org/listinfo.cgi/users-opennebula.org">http://lists.opennebula.org/listinfo.cgi/users-opennebula.org</a><br>
><br>
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