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The Open Virtualization Format (OVF) is an open standard for packaging and distributing virtual appliancesfor the use in virtual machines. An OVA file is a one file alternative to pack a multi file OVF directory. Thisis a short example how to convert OVA for the use in a proxmox 2.0 KVM environment. The OVA file wasexported from the Virtualbox software, where we had build a debian based virtual machine.

Extract the OVA ArchiveOVA files are TAR archives with the OVF directory inside. To extract the archive do

tar -xvf Virtual_Appliance_Debian.ova

=>

Virtual_Appliance_Debian.ovf

Virtual_Appliance_Debian-disk.vmdk

You get Virtual_Appliance_Debian-disk.vmdk which is a virtual machine disk file. The VMDK file format wasdeveloped for the use in VMWare or Virtualbox. It is an open format.

Converting VMDK to RAW and from RAW to qcow2With the free available software Virtualbox it is possible to convert VMDK disk files to RAW image format.

VBoxManage clonehd --format RAW Virtual_Appliance_Debian-disk.vmdk Virtual_Appliance_D

ebian-disk.raw

=> Virtual_Appliance_Debian-disk.raw

Convert the RAW image file to qemu format:

qemu-img convert -f raw Virtual_Appliance_Debian-disk.raw -O qcow2 Virtual_Appliance_

Debian-disk.qcow2

=> Virtual_Appliance_Debian-disk.qcow2

Published02 August 2012Tags

Linux 8

Ubuntu 8

Debian 8

OVA 1

Virtual Appliance 1

Converting OVA images to KVM Supporting tagline

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Use qcow2 files in Proxmox 2.0The use of an existing qcow2 file in proxmox 2.0 is very easy. Just create a new virtual machine andreplace the disk file with the qcow2 file.

create a new KVM virtual machine via the proxmox webinterface.Click Create VM.General: select Node, VM ID and Name.OS: Select the operating system type of your virtual machine.CD/DVD: Do not use any media.Hard Disk: Select existing lvm storage for storage and choose same or better bigger disk size asthe original VM disk size.other Tabs: as needed for the new virtual machine.Confirm: Click Finish

Proxmox has created a new disk file for the virtual machine. Do not start the new VM. Replace the proxmoxgenerated qcow2 file with our Virtual_Appliance_Debian-disk.qcow2

mv Virtual_Appliance_Debian-disk.qcow2 /var/lib/vz/images/105/vm-105-disk-1.qcow2

Start the virtual machine via the proxmox webinterface.

Insertion: About Unzipping 7zip filesSometimes we use 7zip compressed files for easier transportation of disk images. Install 7zip if not already installed:

sudo apt-get install p7zip

Unzip the 7zip file:

7z x Virtual_Appliance_Debian.ova.7z

see alsoexternal information sources: * Convert Virtualbox vdi to KVM qcow:

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http://blog.bodhizazen.net/linux/convert-virtualbox-vdi-to-kvm-qcow/ * Migration of servers to Proxmox VE:http://pve.proxmox.com/wiki/Migration_of_servers_to_Proxmox_VE#VMware_to_Proxmox_VE_.28KVM.29* qcow image format: http://people.gnome.org/~markmc/qcow-image-format.html

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