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List: vbox-dev
Subject: Re: [vbox-dev] trying to clone a vm
From: Carlo Bongiovanni <carlo.bongiovanni () gmail ! com>
Date: 2013-07-23 14:43:57
Message-ID: CABccLP=aavGNTwS1=3TRzSabUYk0iLeyTsiF9N6Bf=1e+vpeOQ () mail ! gmail ! com
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Hi Klaus,
I elaborated your last answer and tried a lot to find what was wrong in my
code. I also discovered that probably I also needed to lock the session
before cloning the machine and I tried doing it.. I finally got this code,
surrounded with try/catch that I avoid to paste here for semplicity:
// find the machine to clone
IMachine m_clone = vbox.findMachine(vmuid_clone);
String m_clone_os = m_clone.getOSTypeId();
// create a new machine with the provided name
IMachine machine = vbox.createMachine(null, vmname, null,
m_clone_os, null);
machine.saveSettings();
vbox.registerMachine(machine);
// lock the src machine
session = mgr.getSessionObject();
m_clone.lockMachine(session, LockType.Write);
IMachine mutable = session.getMachine();
// clone options
CloneMode cm = CloneMode.MachineState;
List<CloneOptions> cloneOptionsList = new
ArrayList<CloneOptions>();
cloneOptionsList.add(CloneOptions.KeepAllMACs);
// clone the machine
IProgress p = machine.cloneTo(mutable, cm, cloneOptionsList);
// get percent of cloning option
log(p.getPercent());
// wait
p.waitForCompletion(-1);
// get percent of cloning option
log(p.getPercent());
// unlock the src machine
session.unlockMachine();
After the execution of this code, the p.getPercent() returns "50", and the
new machine is registered, but no disks are linked to it. Am I missing
something important?
Thanks for any feedback.
Best
Carlo
2013/7/15 Klaus Espenlaub <klaus.espenlaub@oracle.com>
> Hi Carlo,
>
> On 15.07.2013 10:01, Carlo Bongiovanni wrote:
> > Hi All,
> >
> > I am running VirtualBox 4.2.10 on Ubuntu 12.04.
> >
> > I am trying to clone a vm with the Java API. Doing this operation from
> > the console, I would issue the following command:
> > VBoxManage clonevm vmuid_src --name vmname_dest --register
> >
> > With Java I am doing the following:
> >
> > IMachine m_clone = vbox.findMachine(vmuid_src);
> > String m_clone_os = m_clone.getOSTypeId();
> > IMachine machine = vbox.createMachine(null, vmname_dest, null,
> > m_clone_os, null);
> > machine.saveSettings();
> > vbox.registerMachine(machine);
> >
> > CloneMode cm = CloneMode.MachineState;
> > List<CloneOptions> cloneOptionsList = new
> > ArrayList<CloneOptions>();
> > cloneOptionsList.add(CloneOptions.KeepAllMACs);
> >
> > machine.cloneTo(m_clone, cm, cloneOptionsList);
> >
> > After the execution of this code, I found a new vm in the list, but
> > without any storage attached. What am I missing? Can you direct me to
> > the right way to do it? I couldn't understand it from the sdkref.
>
> Your code has to wait until the cloning has completed. The IProgress
> object isn't returned for fun, it serves an important purpose. Without
> it there's no good way to tell when the cloning has finished. It can
> take a very long time, as your code creates a full clone which
> potentially means copying many GBytes of virtual disk contents. Only at
> the end of the VM cloning the settings are all in place...
>
> The best "sample" is always the source of VBoxManage - it's C++, but the
> API works in principle the same in all languages, with minor differences
> in the error handling and thus details of the parameter list.
>
> Klaus
> >
> > Thanks, best
> > Carlo
>
> _______________________________________________
> vbox-dev mailing list
> vbox-dev@virtualbox.org
> https://www.virtualbox.org/mailman/listinfo/vbox-dev
>
--
Carlo Bongiovanni
Tel. +49 173 9714421
callto://pacman81
gtalk: carlo.bongiovanni
[Attachment #5 (text/html)]
<div dir="ltr"><div><div>Hi Klaus, <br><br></div>I elaborated your last answer and \
tried a lot to find what was wrong in my code. I also discovered that probably I also \
needed to lock the session before cloning the machine and I tried doing it.. I \
finally got this code, surrounded with try/catch that I avoid to paste here for \
semplicity:<br>
<br> // find the machine to clone<br> IMachine m_clone = \
vbox.findMachine(vmuid_clone);<br> String m_clone_os = \
m_clone.getOSTypeId();<br> // create a new machine with the provided \
name<br>
IMachine machine = vbox.createMachine(null, vmname, null, m_clone_os, \
null);<br><br> machine.saveSettings();<br> \
vbox.registerMachine(machine);<br><br> // lock the src machine<br>
session = mgr.getSessionObject();<br> \
m_clone.lockMachine(session, LockType.Write);<br> IMachine mutable = \
session.getMachine();<br><br> // clone options<br> CloneMode cm \
= CloneMode.MachineState;<br>
List<CloneOptions> cloneOptionsList = new \
ArrayList<CloneOptions>();<br> \
cloneOptionsList.add(CloneOptions.KeepAllMACs);<br><br> // clone the \
machine<br> IProgress p = machine.cloneTo(mutable, cm, \
cloneOptionsList);<br>
<br> // get percent of cloning option<br> \
log(p.getPercent());<br><br> // wait<br> \
p.waitForCompletion(-1);<br><br> // get percent of cloning option<br> \
log(p.getPercent());<br>
<br> // unlock the src machine<br> \
session.unlockMachine();<br><br></div><div>After the execution of this code, the \
p.getPercent() returns "50", and the new machine is registered, but no \
disks are linked to it. Am I missing something important?<br>
<br></div><div>Thanks for any feedback. \
<br></div><div>Best<br>Carlo<br></div><div><br><br></div></div><div \
class="gmail_extra"><br><br><div class="gmail_quote">2013/7/15 Klaus Espenlaub <span \
dir="ltr"><<a href="mailto:klaus.espenlaub@oracle.com" \
target="_blank">klaus.espenlaub@oracle.com</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc \
solid;padding-left:1ex">Hi Carlo,<br> <div><div class="h5"><br>
On 15.07.2013 10:01, Carlo Bongiovanni wrote:<br>
> Hi All,<br>
><br>
> I am running VirtualBox 4.2.10 on Ubuntu 12.04.<br>
><br>
> I am trying to clone a vm with the Java API. Doing this operation from<br>
> the console, I would issue the following command:<br>
> VBoxManage clonevm vmuid_src --name vmname_dest --register<br>
><br>
> With Java I am doing the following:<br>
><br>
> IMachine m_clone = vbox.findMachine(vmuid_src);<br>
> String m_clone_os = m_clone.getOSTypeId();<br>
> IMachine machine = vbox.createMachine(null, vmname_dest, null,<br>
> m_clone_os, null);<br>
> machine.saveSettings();<br>
> vbox.registerMachine(machine);<br>
><br>
> CloneMode cm = CloneMode.MachineState;<br>
> List<CloneOptions> cloneOptionsList = new<br>
> ArrayList<CloneOptions>();<br>
> cloneOptionsList.add(CloneOptions.KeepAllMACs);<br>
><br>
> machine.cloneTo(m_clone, cm, cloneOptionsList);<br>
><br>
> After the execution of this code, I found a new vm in the list, but<br>
> without any storage attached. What am I missing? Can you direct me to<br>
> the right way to do it? I couldn't understand it from the sdkref.<br>
<br>
</div></div>Your code has to wait until the cloning has completed. The IProgress<br>
object isn't returned for fun, it serves an important purpose. Without<br>
it there's no good way to tell when the cloning has finished. It can<br>
take a very long time, as your code creates a full clone which<br>
potentially means copying many GBytes of virtual disk contents. Only at<br>
the end of the VM cloning the settings are all in place...<br>
<br>
The best "sample" is always the source of VBoxManage - it's C++, but \
the<br> API works in principle the same in all languages, with minor differences<br>
in the error handling and thus details of the parameter list.<br>
<br>
Klaus<br>
><br>
> Thanks, best<br>
> Carlo<br>
<br>
_______________________________________________<br>
vbox-dev mailing list<br>
<a href="mailto:vbox-dev@virtualbox.org">vbox-dev@virtualbox.org</a><br>
<a href="https://www.virtualbox.org/mailman/listinfo/vbox-dev" \
target="_blank">https://www.virtualbox.org/mailman/listinfo/vbox-dev</a><br> \
</blockquote></div><br><br clear="all"><br>-- <br><div dir="ltr"><span \
style="font-family:arial;font-size:small">Carlo Bongiovanni</span><br \
style="font-family:arial;font-size:small"><br \
style="font-family:arial;font-size:small">
<span style="font-family:arial;font-size:small">Tel. +49</span><span \
style="font-family:arial;font-size:small"> </span><span style="font-size:small">173 \
9714421</span><br style="font-family:arial;font-size:small"><span \
style="font-family:arial;font-size:small">callto://pacman81</span><br \
style="font-family:arial;font-size:small">
<span style="font-family:arial;font-size:small">gtalk: \
carlo.bongiovanni</span><br></div> </div>
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