Support for roboxes/generic boxes

[abbbi]

hi there,

i mainly using vagrant with the libvirt provider. There is a big variety of operating systems available, created by the
roboxes project (https://github.com/lavabit/robox). Maybe it would make sense to have support for these boxes
in the ovirt4 provider too? They should meet all requirements as they work on plain libvirt nicely (but are missing cloud-init).

This would make it easier to use existing boxes, and not having to use a dummy box with templates ..

[myoung34]

If you can find a way to shim them into the build i'd be happy to merge a PR, assuming they work as expected

[abbbi]

So as i quick test i did the following:

1. Downloaded vagrant box generic/centos8
2. uploaded the boxes image as disk to RHV 4.4
3. Made a template
4. Spinned up a VM from the template using vagrant-ovirt4, booted nicely, network configuration however failed.

The generic libvirt boxes depend on an internal libvirt management network and are by default configured
to use DHCP on the first network interface to be reachable by the vagrant provisioner. The deployment
flow is as follows:

1. vagrant checks if the box image exists in the libvirt volume
2. if not, uploads the box image to the volume
3. creates a new virtual machine based on a snapshot (would be template, in ovirt), assigns virtual
   machine to libvirt netwok with DHCP running
4. spins up virtual machine, waits until virtual machine receives IP from DHCP service
5. Runs provisioning steps on VM.

I think the one way one would get the same behavior with the ovirt4 provider is to have an external
network on the ovirt system using the OVN provider:

https://github.com/oVirt/ovirt-provider-ovn

which seems to have the feature to create networks with DHCP enabled, So provision with the vagrant-ovirt4
would be:

1. vagrant-ovirt4 checks if the generic/* image is available in the configured storage
2. if not, uploads the image and defines it as template
3. clones new VM from template, assigns OVN network to it
4. vm boots, receives IP via DHCP
5. provisioning scripts run..

[myoung34]

Is there anything actionable here? Im still unsure about this:

vagrant-ovirt4 checks if the generic/* image is available in the configured storage

Im not familiar with this functionality being in the provider itself. Is it inherited in the provider? Or is this on the ovirt server itself?

[abbbi]

Is there anything actionable here? Im still unsure about this:

vagrant-ovirt4 checks if the generic/* image is available in the configured storage

Im not familiar with this functionality being in the provider itself. Is it inherited in the provider? Or is this on the ovirt server itself?

vagrant-libvirt for example checks if the base image configured in the Vagrantfile is available in the local storage where
the virtual machine is provisioned. If not, it downloads the base image and uploads it to a storage volume, in order to
clone the vagrant cow vm snapshot from it.