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<div class="moz-cite-prefix">On 08/29/2013 08:53 AM, Carlos Martín
Sánchez wrote:<br>
</div>
<blockquote
cite="mid:CAEPYvFLe2eThS+Eh8D61pH3PUm1U4BvW=M_AL3pTwYXJs7Hing@mail.gmail.com"
type="cite">
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<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
moz-do-not-send="true" href="mailto:rsvancara@wsu.edu"
target="_blank">rsvancara@wsu.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div>
<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>
<br>
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.
<br>
<br>
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>
<div> </div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div>
<div
style="direction:ltr;font-size:10pt;font-family:Tahoma">
Also if I attempt to use the snapshot under storage,
I see this rather vague error:<br>
<br>
<h1 style="margin:14px
0px;padding:0px;font-size:1.2em;direction:ltr;font-family:'Open
Sans',sans-serif;font-weight:bold;font-style:normal;color:rgb(34,34,34);line-height:1.1;font-variant:normal;letter-spacing:normal;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(243,153,153)">
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>
<br>
</span><br>
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>
</div>
</div>
</div>
</blockquote>
I will have to dig through the other error logs to provide this
context. Maybe qcow2 is a better format for disks??? <br>
<br>
<blockquote
cite="mid:CAEPYvFLe2eThS+Eh8D61pH3PUm1U4BvW=M_AL3pTwYXJs7Hing@mail.gmail.com"
type="cite">
<div dir="ltr">
<div class="gmail_extra">
<div class="gmail_quote">
<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 moz-do-not-send="true"
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 moz-do-not-send="true"
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 moz-do-not-send="true"
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 moz-do-not-send="true"
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
moz-do-not-send="true"
href="http://www.opennebula.org/"
target="_blank">www.OpenNebula.org</a> | <a
moz-do-not-send="true"
href="mailto:cmartin@opennebula.org"
target="_blank">cmartin@opennebula.org</a> | <a
moz-do-not-send="true"
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"></span></div>
</div>
</div>
</div>
<br>
</div>
</div>
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</div>
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