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#Virtualization
#Libvirt
#Windows 11
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 to pl...
#Virtualization
#Libvirt
#Windows 11
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 - Emulate...
#Debian
#Virtualization
#Libvirt
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 Xor...
#Debian
#Virtualization
#Libvirt
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 d...
#Virtualization
#Libvirt
#Linux
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 fou...
#Virtualization
#Libvirt
#Linux
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...
#Virtualization
#Libvirt
#Linux
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 store som...
#Debian
#Virtualization
#Libvirt
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...
#Debian
#Virtualization
#Libvirt
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...
#Virtualization
#Libvirt
#Linux
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...
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