CentOS virt - Apr 2011 - Confused by "qemu-img convert"

Hi All,

Okay.  Now I am confused.

I have a bunch of virtual machines running under Virtual Box 3.2.12.
I want to run them under KVM and drop Virtual Box from these
systems.

Supposedly "qemu-img convert" now supports direct conversion
from vdi to whatever KVM uses.  So I fired up the man page and
got really confused.  Then I fired up Google and got worse
confused.

Might I impose on some kind individual to write down a sample
run string that would show me how to do this?

Many thanks,
-T

> Hi All,
>
> Okay.  Now I am confused.
>
> I have a bunch of virtual machines running under Virtual Box 3.2.12.
> I want to run them under KVM and drop Virtual Box from these
> systems.
>
> Supposedly "qemu-img convert" now supports direct conversion
> from vdi to whatever KVM uses.  So I fired up the man page and
> got really confused.  Then I fired up Google and got worse
> confused.
>
> Might I impose on some kind individual to write down a sample
> run string that would show me how to do this?
>
> Many thanks,
> -T
>
Is it as easy as?

qemu-img convert -f vdi oldImage.vdi -O qcow2 newImage.qcow

Do I need a ton of disk space to go to a full hard drive
then back to a small virtual hard drive?

Do I need the Virtual Box XML file for anything or just
the VDI?

Many thanks,
-T

On 4/22/11 10:18 PM, MargoAndTodd wrote:
> I have a bunch of virtual machines running under Virtual Box 3.2.12.
> I want to run them under KVM and drop Virtual Box from these
> systems.
Hi. I am curious why you are making the switch out of VirtualBox. We are 
beginning to test it with the new VirtBox 4.0.x series now that it has 
been open sourced.

We currently run Xen, VMWare (both Server and ESX) and a test KVM box 
and are always looking for others experiences.


Sincerely,

William "Bill" Kern