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Re: [libvirt] Create a copy of a Domain



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 redhat com>
To: "IKI-サガル バルウェ" <sagar barve ikic co jp>
Cc: "Philipp Hahn" <hahn univention de>; <libvir-list 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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