I have added a new provisioning module to support KVM using the libvirt virtualization API (Jira issue VCL-545). It is based on the code submitted by Xinquin Yu (Jira issue VCL-339). I split up the libvirt code and the KVM-specific code so that the base libvirt code can be used to support the other hypervisors that libvirt supports (Xen, Linux containers...). This should allow support to be added for other hypervisors rather easily without having to change the main libvirt.pm file.
I have created a documentation page at https://cwiki.apache.org/confluence/display/VCL/Libvirt+Provisioning+Module. This page is not complete but currently contains a basic description of the architecture. I also copied the POD documentation from the modules to this page describing the subroutines. I have successfully been able to load existing VMware-based images under KVM using this new module. The KVM.pm module automatically converts VMware images to KVM's qcow2 format. This works for VMware images saved in the flat or 2GB sparse formats. It also runs virt-win-reg to modify the registry of the converted image allowing it to load using an IDE disk/driver. Thanks to Young Oh for providing this information. There are some details which still need to be completed: -Image capture -Image retrieval from another management node Image capture should be pretty straight-forward but there are some VMware compatibility issues that will need to be addressed. VMware -> KVM conversion isn't an issue, but we'll need to figure out how to handle images saved under KVM. Ideally they will compatible to also run under VMware. They could be converted to the vmdk or raw format and then copied to the image repository. However, I believe these will be saved thick instead of sparse. It will take some experimenting to figure out the best way to handle this. I'd also like to add some features to utilize virt-win-reg to analyze which drivers are configured in the image when it is loaded. This information could be used to add the correct/best devices to the VM's XML definition. Regards, Andy
