kvm: Use -display none rather than -nographic

[ganeti-local] / doc / ovfconverter.rst

diff --git a/doc/ovfconverter.rst b/doc/ovfconverter.rst
index f45c9ed..774cf81 100644 (file)
--- a/doc/ovfconverter.rst
+++ b/doc/ovfconverter.rst
@@ -44,14 +44,59 @@ Neither USB nor CD-ROM drive are used in Ganeti. We decided to simply
 ignore unused elements of this section, so their presence won't raise
 any warnings.
 
-
 Operating System
 ----------------
 List of operating systems available on a cluster is viewable using
 ``gnt-os list`` command. When importing from external source, providing
 OS type in a command line (``--os-type=...``) is **required**. This is
-because rven if the type is given in OVF description, it is not detailed
+because even if the type is given in OVF description, it is not detailed
 enough for Ganeti to know which os-specific scripts to use.
+Please note, that instance containing disks may only be imported using
+OS script that supports raw disk images.
+
+References
+----------
+Files listed in ``ovf:References`` section cannot be hyperlinks.
+
+
+Limitations on export
+=====================
+
+Disk content
+------------
+Most Ganeti instances do not contain grub. This results in some
+problems when importing to virtualization software that does expect it.
+Examples of such software include VirtualBox and VMWare.
+
+To avoid trouble, please install grub inside the instance before
+exporting it.
+
+
+Import to VirtualBox
+--------------------
+``format`` option should be set to ``vmdk`` in order for instance to be
+importable by VirtualBox.
+
+Tests using existing versions of VirtualBox (3.16) suggest, that
+VirtualBox does not support disk compression or OVA packaging. In future
+versions this might change.
+
+
+Import to VMWare
+----------------
+Importing Ganeti instance to VMWare was tested using ``ovftool``.
+
+``format`` option should be set to ``vmdk`` in order for instance to be
+importable by VMWare.
+
+Presence of Ganeti section does seem to cause some problems and
+therefore it is recommended to use ``--external`` option on export.
+
+Import of compressed disks generated by ovfconverter was impossible in
+current version of ``ovftool`` (2.1.0). This seems to be related to old
+``vmdk`` version. Since the conversion to ``vmdk`` format is done using
+``qemu-img``, it is possible and in fact expected, that future versions
+of the latter tool will resolve this problem.
 
 
 Import examples
@@ -130,11 +175,34 @@ Ganeti-specific configuration to be saved. In that case, simply use the
 Known issues
 ============
 
-Export
-------
-When exporting to **VirtualBox**, you may encounter errors regarding
-network. If that is the case, simply change the network type in options
-to ``NAT``.
+Conversion errors
+-----------------
+If you are encountering trouble when converting the disk, please ensure
+that you have newest ``qemu-img`` version.
+
+OVA and compression
+-------------------
+The compressed disks and OVA packaging do not work correctly in either
+VirtualBox (old version) or VMWare.
+
+VirtualBox (3.16 OSE) does not seem to support those two, so there is
+very little we can do about this.
+
+As for VMWare, the reason behind it not accepting compressed or packed
+instances created by ovfconverter seems to be related to the old vmdk
+version.
+
+Problems on newest VirtualBox
+-----------------------------
+In Oracle VM Virtualbox 4.0+ there seems to be a problem when importing
+any OVF instance created by ovfconverter. Reasons are again unknown,
+this will be investigated.
+
+Disk space
+----------
+The disk space requirements for both import and export are at the moment
+very large - we require free space up to about 3-4 times the size of
+disks. This will most likely be changed in future versions.
 
 
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