Virtualization | Raddinox.com

GPU Passthrough to Windows 11 using libvirt & qemu

In my last post I installed Windows 11 in a virtual machine. But just a plain virtual machine with Windows 11 isn’t much fun, so lets give the virtual machine a GPU …

17 Jan 2022

Install Windows 11 in virtual machine using virt-manager

Lets install Windows 11 in a virtual machine using an emulated TPM module. It can be useful to have a virtual Windows machine for some software. Install SWTPM - Emulated …

15 Jan 2022

Debian Sid, Fix broken graphics output with GPU passthrough

I realized I had no graphics output before Windows has loaded in my virtual machine with GPU passthrough. Or if I was using a FreeBSD/Linux VM I had no graphics until …

13 Jan 2022

Dual NVIDIA GPU with passthrough on Debian

I have a brand new Gigabyte x570 Aorus Pro, this motherboard has super awesome iommu groups. Finally can I use both my NVME drives and two GPUs. My old Ryzen 5 3600 cpu …

01 Nov 2021

ESXI Failed to power on virtual machine <vm-name>. The attempted operation cannot be performed in the current state (Powered off).

I some times get this, mostly because I remove the ISO that is attached as an dvd to the virtual machine. Usually after I have installed an OS. This is very annoying. But …

08 Dec 2020

Restore data from QCow2 missing backing file (data recovery part 4)

I have successfully restored data from my QCow2 file with a missing backing file. I wrote lots of C code to be able to convert the QCow2 file into an IMG file. Then I …

30 Nov 2020

Read QCow2 file using C (data recovery part 3)

Time to write some code but I will not go into all the details on how to write C code. I will only reference some of the C code specific to reading the actual QCow2 file. …

28 Nov 2020

QCow2 File format (data recovery part 2)

QCow2 image file is used by Qemu for virtual harddrive images. I will not go into any details about the file format, I will only scratch the surface enough to be able to …

26 Nov 2020

Failed at backup... (data recovery part 1)

So everywhere can you read about how important it is to backup your data. Are you actually doing it? I don’t do it, although I have a private git server where I …

24 Nov 2020

Linux gaming VM issues (part 5 of Debian as type 1 hypervisor)

So I have been running a Linux virtual machine as my main OS for a while. Recently I changed things a bit, moved my Linux VM over to the big GPU (RTX2060) and enlarged …

03 Oct 2020

Isolating CPU cores from VM host

It is possible to isolate the CPU cores/threads from the Host OS, so it will not use those cores/threads for anything. This is done by using the isolcpus paramater to the …

03 Oct 2020

Activate hugepages to use with libvirt

Hugepages is a good way to improve performance on virtual machines, as it will pre-allocate lots of RAM dedicated for use by libvirt/qemu, or something else that can use …

18 Sep 2020

Solaris 7 SPARC Edition in Qemu using VNC

I have Solaris 7 SPARC and Intel platform edition on original CD release. I can’t remember from where I received it. But still it is old and it’s Unix so I …

23 Aug 2020

Game streaming server (part 4 of Debian as type 1 hypervisor)

Using my Windows VM to act as a game streaming server, both Geforce Experience and Steam. Well I have already tried to game on Linux and for me it works perfectly, I have …

18 Aug 2020

Libvirt automatic USB passthrough scripts

Short guide to setup automatic USB passthrough for a virtual machine. With these scripts it is possible to dedicate USB port(s) for one virtual machine. Anything plugged …

09 Aug 2020

Install Debian VM (part 3 of Debian as type 1 hypervisor)

To make the Debian host OS acting like a type 1 hypervisor, the desktop OS must run as a virtual machine too. So the second GPU will be passthrough to the second virtual …

09 Aug 2020

Installing Windows VM and passthrough GPU (part 2 of Debian as type 1 hypervisor)

Now we are ready to install our first virtual machine. But first we need something to install from. You can download the ISO directly from Microsoft these days, just make …

05 Aug 2020

Debian as type 1 hypervisor for gaming, part 1

This is my notes of how I got a Gaming VM up and running on Debian. And I just don’t want to do stuff like others, so I am going to run a second VM for my Linux …

05 Aug 2020