[libvirt-users] Questions regarding migration from QEMU to libvirt

Hi, My colleagues and I have a set of scripts that we use to automate our daily tasks related to the Linux Kernel. As a result, most of our code relies on the QEMU features; and recently we decided use libvirt instead of QEMU. However, we have some questions, and I would like to know if someone could help us. Follows: 1) Import our QEMU images with virsh Currently, we import the QEMU VMs with virt-install. Is it possible to automatically discover the distro variant of a QEMU image in order to use it in the “--os-variant” option? Here is how we register a VM: https://github.com/rodrigosiqueira/kworkflow/pull/23/files#diff-70617d452... 2) The requirement of sudo to create a network When we register our VM, we want to keep the ssh working well. However, every time we register a VM we create a new network bridge as a result it requires sudo. Is it possible to avoid this? Or at least make this a single action? Here is how we handled this: * The code for register: https://github.com/rodrigosiqueira/kworkflow/pull/23/files#diff-70617d452... * The configuration file that we adopted as a default: https://github.com/rodrigosiqueira/kworkflow/pull/23/files#diff-d8c164824... 3) When using libvirt it changes the owner of our image If we try to use libvirt, it changes the ownership of our QEMU images (root). We fixed it by changing the file “/etc/libvirt/qemu.conf”, and switch the option dynamic_ownership to “0”. What is the impact of that change? Is it dangerous? There is a way to avoid this change? Finally, here is the full code of the libvirt part: https://github.com/rodrigosiqueira/kworkflow/pull/23/files Thanks Best Regards -- Rodrigo Siqueira http://siqueira.tech Graduate Student Department of Computer Science University of São Paulo