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Configuring AMD SEV on Proxmox: Protecting VM Data Even If the Host is Compromised
Detailed guide on enabling AMD SEV on Proxmox to encrypt RAM and protect virtual machines from hypervisor-level attacks.
Posted inVirtualization
QEMU Monitor Console and QMP Protocol: Control, Debug, and Inject Errors into KVM VMs from the Hypervisor Layer
QEMU Monitor Console and QMP Protocol allow you to control KVM virtual machines directly from the hypervisor layer without SSH-ing into the guest OS. This guide covers connecting to the monitor, using QMP with Python for automation, and practical debugging techniques such as memory dumps, disk error injection, and network packet capture.
Posted inVirtualization
Building Your Own Vagrant Box from KVM/Libvirt: Optimizing Lab Environments for IT Teams
Don't let environment setup slow down your project. Discover how to build custom Vagrant Boxes from KVM/Libvirt to standardize workflows for your IT team.
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Proxmox PCI Resource Mapping Guide: Flexibly Assign GPU, USB, and NIC to VMs Using Labels on Proxmox 8
PCI Resource Mapping in Proxmox 8 lets you assign GPU, USB, and NIC devices to VMs using logical labels instead of hard-coded physical PCI addresses. Migrating VMs between cluster nodes requires no config changes — Proxmox automatically resolves the correct hardware for whichever node the VM is running on.
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Migrating a Linux Server to KVM: Using virt-p2v Instead of VMware Converter
A detailed guide on using virt-p2v to migrate physical Linux servers to KVM. A stable, free, and production-ready P2V solution that's a perfect replacement for VMware Converter.
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Configuring TRIM/UNMAP for KVM/Proxmox: Reclaiming ‘Occupied’ Disk Space
Stop virtual machine disks from bloating unnecessarily. Detailed guide on configuring TRIM/UNMAP for KVM/Proxmox to automatically reclaim physical space when deleting files.
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Vagrant + KVM/Libvirt: How to Double Your VM Speed on Linux
Don't let VirtualBox slow down your development on Linux. Switch to KVM/Libvirt to enjoy native performance, 15-second VM boots, and better system resource efficiency.
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3D Graphics Acceleration for KVM VMs: Forget GPU Passthrough, Just Use VirtIO-GPU!
Stop letting your Linux VM crawl along at a snail's pace. This guide shows you how to enable 3D graphics acceleration with VirtIO-GPU and Virgil3D, boosting frame rates by 5x without any GPU Passthrough setup.
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Guide to Repairing QCOW2 Disk Errors with qemu-img: Recovering Proxmox/KVM Data After a Crash
VM won't boot due to QCOW2 disk errors? Learn how to use qemu-img to check, repair, and rebuild virtual disk files to quickly recover critical data on Proxmox/KVM.
Posted inVirtualization
Deploying NVMe-over-Fabrics (NVMe-oF) on Linux: High-Speed Network Storage Setup and Optimization for KVM
A practical guide to deploying NVMe-over-Fabrics (NVMe-oF) over TCP on Linux — from a basic 5-minute setup to performance tuning and KVM infrastructure integration. Covers target and initiator configuration, persistent config, and benchmarking to verify results.