<div dir="ltr">Hi,<div><br></div><div class="gmail_extra"><div class="gmail_quote">On Thu, Aug 29, 2013 at 4:18 PM, Svancara, Randall <span dir="ltr"><<a href="mailto:rsvancara@wsu.edu" target="_blank">rsvancara@wsu.edu</a>></span> wrote:<br>
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<div style="direction:ltr;font-size:10pt;font-family:Tahoma">Hi,<br>
<br>
I read the documentation for Open Nebula. I understand that raw disks with KVM do not support snapshots (ok, I understand this is a technical limitation and I am migrating to qcow)<br>
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However if I go to the Virtual Machines, click on the virtual machine and then select the storage tab, there is an option for snapshot.
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Here is where I believe the documentation falls apart for this tool. What is the difference between snapshots in the snapshot tab and snapshot under storage.</div></div></blockquote><div><br></div><div>The VM guide has two sections, one for disk snapshots [1], and another for system snapshots [2]</div>
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Also if I attempt to use the snapshot under storage, I see this rather vague error:<br>
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Error</h1>
<span style="color:rgb(102,0,0);font-family:Tahoma,Arial,Helvetica,sans-serif;font-size:14px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:14px;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(243,153,153);float:none;display:inline!important">[VirtualMachineSaveDisk]
Cannot use selected DISK. The DISK 0 is already going to be saved.<br>
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I have to make this product available for less technical users. So first of all, what does this even mean. Second of all, is there any way to provide a more intuitive error message??? I do not see anywhere in the interface where there is something about
DISK 0 is going to be saved or a status of a scheduled job. <br>
<br></div></div></blockquote><div><br></div><div>Out of context, it is a vague error message. But to get this message, you have to perform a disk snapshot, and the wizard contains a tooltip explaining what it will do:</div>
<div><div><br></div><div>Sets the specified VM disk to be saved in a new Image.</div><div>Deferred: The Image is created immediately, but the contents are saved only if the VM is shut down gracefully (i.e., using Shutdown; not Delete)</div>
<div>Hot: The Image will be saved immediately.</div></div><div><br></div><div>The Storage disk table also contains a "save as" column, that after a disk snapshot operation is filled with that new Image's ID.</div>
<div>So, it basically means that you cannot save the disk in a new Image, because the disk is already going to be saved...</div><div><br></div><div><br></div><div><br></div><div>The best way to simplify OpenNebula for less technical users is to cut down the number of features exposed to them.</div>
<div>We allow this via Sunstone views, take a look at the cloud view [3].</div><div><br></div><div>Regards <br></div><div><br></div><div>[1] <a href="http://opennebula.org/documentation:rel4.2:vm_guide_2#disk_snapshoting">http://opennebula.org/documentation:rel4.2:vm_guide_2#disk_snapshoting</a><br>
</div><div>[2] <a href="http://opennebula.org/documentation:rel4.2:vm_guide_2#snapshotting">http://opennebula.org/documentation:rel4.2:vm_guide_2#snapshotting</a><br></div><div>[3] <a href="http://opennebula.org/documentation:rel4.2:suns_views#cloud_view">http://opennebula.org/documentation:rel4.2:suns_views#cloud_view</a><br>
</div><div> </div><div><div><div dir="ltr">--<br>Join us at <a href="http://opennebulaconf.com/" target="_blank">OpenNebulaConf2013</a> in Berlin, 24-26 September, 2013<br>--<div>Carlos Martín, MSc<br>Project Engineer<br>
OpenNebula - The Open-source Solution for Data Center Virtualization<div><span style="border-collapse:collapse;color:rgb(136,136,136);font-family:arial,sans-serif;font-size:13px"><a href="http://www.opennebula.org/" target="_blank">www.OpenNebula.org</a> | <a href="mailto:cmartin@opennebula.org" target="_blank">cmartin@opennebula.org</a> | <a href="http://twitter.com/opennebula" target="_blank">@OpenNebula</a></span><span style="border-collapse:collapse;color:rgb(136,136,136);font-family:arial,sans-serif;font-size:13px"><a href="mailto:cmartin@opennebula.org" target="_blank" style="color:rgb(42,93,176)"></a></span></div>
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