Synnefo » snf-ganeti

distribution (e.g. by allowing usage of public key infrastructure and

providing tools for management of basic software licensing).

- virtual disks

- network description

Additionally, the package may have some disk image files and other

additional resources (e.g. ISO images).

Supported disk formats

----------------------

Although OVF is claimed to support 'any disk format', what we are

- VMWare: ``.vmdk`` (which comes in at least 3 different flavours:

  ``sparse``, ``compressed`` and ``streamOptimized``)

- Red Hat Enterprise Virtualization: ``.raw`` (raw disk format),

  ``.cow`` (qemu's ``QCOW2``)

- other: AbiCloud, OpenNode Cloud, SUSE Studio, Morfeo Claudia,

The justification is the following:

- Raw format is supported as it is the main format of disk images used

  has the advantage of producing relatively small disk images, which

  is extremely important advantage when moving instances.

Import and export - the closer look

===================================

            <gnt:DiskTemplate</gnt:DiskTemplate>

            <gnt:OperatingSystem>

                <gnt:Name/>

            </gnt:OperatingSystem>

            <gnt:Hypervisor>

                <gnt:Name/>

            </gnt:Hypervisor>

            <gnt:Network>

            <gnt:Mode/>

  [instance]

      disk0_dump = filename     => File in References

      disk0_ivname = name       => generated automatically

      disk_count = number       => generated automatically

      disk_template = disk_type => gnt:DiskTemplate

      hypervisor = hyp-name     => gnt:Name in gnt:Hypervisor

If this happens you can specify all the missing parameters in

the command line. Please refer to `Command Line`_ section.

options when converting from VirtualBox, VMWare and OpenSuseStudio.

Export to other virtualization software

Disks

-----

format. There is also a possibility to provide virtual disk in chunks

of equal size. The latter will not be implemented in the first version,

but we do plan to support it eventually.

Please note, that due to security reasons we require the disk image to

be in the same directory as the ``.ovf`` description file.

present, we perform a simple check - if network name specified in

``NetworkSection`` contains words ``bridged`` or ``routed``, we consider

this to be the network type. Otherwise option ``auto`` is chosen, in

Hardware

--------

Other

-----

_`Command Line`

===============

The basic usage of the ovf tool is one of the following::

    ovfconverter import filename

This will result in a conversion based solely on the content of provided

file. In case some information required to make the conversion is

Disks

^^^^^

``--disk-template=diskless`` causes the converter to ignore all other

``--disk=number:size=value`` causes to create disks instead of

converting them from OVF package; numbers should start with ``0`` and be

``--tags=tag1,tag2,tag3`` is a means of providing tags specific for the

instance.

After the conversion is completed, you may use ``gnt-backup import`` to

import the instance into Ganeti.

Example::

	gnt-backup import xen.i1

	gnt-instance list

Export options

--------------

Export options include choice of disk formats to convert the disk image

By default, exported OVF package will not be contained in the OVA

package, but this may be changed by adding ``--ova`` option.

Please note that in order to create an OVF package, it is first

required that you export your VM using ``gnt-backup export``.

Implementation details

======================

---------------

Disk conversion for both import and export is done using external tool

Import

- save gathered information in ``config.ini`` file

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