[libvirt] Create a copy of a Domain

[IKI-サガル バルウェ]

Thanks Daniel,

> virt-clone is written in python itself and most of its code is in a
> set of library modules, so you can call them directly if neccessary.
> Or just write the equivalent code yourself using libvirt python, since
> there isn't much too it
I will take a look into the virt-clone python code.

As for your previous suggestion:

>> >>I think you must at least change the UUID (/domain/uuid) and name
>> >>(/domain/name) in the XML description. Very like you also need to
>> >>duplicate
>> >>the used disk images and update their paths
>> >>(/domain/devices/disk/source/@file) accordingly, unless you really want
>> >>your
>> >>domians to share them.

I tried this, i.e. assigned a new uuid, name and also created a new disk 
image file and assigned the new path to the XML description.
Then tried to create a new VM using the "virDomainCreateXML" method passing 
the updated XML Desc.

But I get the following error:

error : POST operation failed: xend_post: error from xen daemon: (xend.err 
"Error creating domain: Boot loader didn't return any data!")

I searched about this error, and could not find anything I could understand.
Please help me with this.

Thanks and Regards
Sagar Barve

----- Original Message ----- 
From: "Daniel P. Berrange" <berrange at redhat.com>
To: "IKI-サガル　バルウェ" <sagar.barve at ikic.co.jp>
Cc: "Philipp Hahn" <hahn at univention.de>; <libvir-list at redhat.com>
Sent: Friday, June 11, 2010 6:32 PM
Subject: Re: [libvirt] Create a copy of a Domain


> On Fri, Jun 11, 2010 at 10:22:18AM +0900, IKI-サガル　バルウェ wrote:
>> Thanks Daniel,
>>
>> >>I think you must at least change the UUID (/domain/uuid) and name
>> >>(/domain/name) in the XML description. Very like you also need to
>> >>duplicate
>> >>the used disk images and update their paths
>> >>(/domain/devices/disk/source/@file) accordingly, unless you really want
>> >>your
>> >>domians to share them.
>>
>> I will definately try this out. As for changing the UUID, I think the new
>> value has to be unique in terms of all other Domains present. I am 
>> right??
>>
>> >Better yet use the 'virt-clone' command line tool, or virt-manager's 
>> >clone
>> >capability
>>
>> As for using 'virt-clone', is there a way to implement this using python
>> bindings for libvirt??
>> I want to provide the functionality in a python script.
>> I thought of doing this by directly executing the command line 
>> 'virt-clone'
>> command from my python script and check wheather it executes successfully
>> or not. We can do this by the 'os.system' function in python.
>
> virt-clone is written in python itself and most of its code is in a
> set of library modules, so you can call them directly if neccessary.
> Or just write the equivalent code yourself using libvirt python, since
> there isn't much too it
>
> Daniel
> -- 
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