I spent last week rebuilding my entire setup — migrating from #Unraid to #Proxmox.
New storage layout, new VMs, new containers, new automations.
It’s amazing how a clean slate can simplify everything and spark new ideas.
Still tweaking, still optimizing, but honestly? Feels good to be back in the #hypervisor world.
Any of you doing winter homelab overhauls right now?
A question for SPARC experts – did anyone use virtualization/hypervisors on SPARC v9/Sun4u machines, i.e. before the availability of Sun4v processors? If so, is there any sample code for a (ideally bare-metal "type 1") hypervisor available?
The only reference I found is a paper by Leon SPARC (v8) users who conclude that SPARC v8 should be classically (Popek/Goldberg) virtualizable using a trap- and emulate approach.
Wouldn't it be cool if we built a little bootable #hypervisor that could run #Android in a protected VM for grandma, making her old computer safe, fast, and simple, and then, because it's built on that same secure fabric, you could just add more computers to the network for instant backup, shared resources, and more fun?
The last new #Linux #kernel for 2025 was just released and there are some really cool changes all around. One of the new additions is detection for FreeBSD's #bhyve #hypervisor. Wicked cool!
From the article:
"In what might be a sign of the quiet continued spread of FreeBSD, the kernel can now detect and handle that it is running under FreeBSD's built-in bhyve hypervisor. Coincidentally, FreeBSD 15.0 just appeared as well, and in this release bhyve supports over 255 virtual processors [PDF] in a VM. Now Linux can handle that configuration."
The juicy details are here:
Σειρά μαθημάτων Proxmox!
Virtualization στην πράξη με 3 μαθήματα-workshop
Εκκίνηση 06/12/2025
Σάββατα, 18:30-20:30
Πληροφορίες και δηλώσεις👉: https://www.greeklug.gr/el/activities/news/553-greeklug-20251206-proxmox
#μαθήματα #πληροφορική #proxmox #hypervisor #virtualization #kvm #virtualmachines #cloudit #lxc #infrastructure #sysadmin #devops #homelab #foss #ellak #ελλακ #freesoftware #opensource #gnu #linux
Что нового в Proxmox VE 9.1 (Ru перевод)
Proxmox VE 9.1 released with support for OCI container images, TPM state support in qcow2 format, enhanced control for nested virtualization in specialized VMs, better SDN status reporting
https://proxmox.com/en/about/company-details/press-releases/proxmox-virtual-environment-9-1
#proxmox #proxmoxve #debian #linux #virtualization #hypervisor #qemu
Incus-OS: Immutable Linux OS to run Incus as a hypervisor
https://linuxcontainers.org/incus-os/
#HackerNews #IncusOS #ImmutableLinux #Hypervisor #LinuxContainers #OpenSource
If you'd like to learn more about WHY #QubesOS exists, this older video from the founder of it may be of interest to you:
https://en.wikipedia.org/wiki/Joanna_Rutkowska
https://en.wikipedia.org/wiki/Qubes_OS
#QubesOS #Hypervisor #XenHypervisor #Compartmentalization #Virtualization #Fedora #Debian #Whonix #Qube #Linux
If you are wanting to try out #QubesOS, i'd recommend checking out the FAQ, forum and especially the HCL to give you some idea of whether or not or how well your particular hardware may work with it.
https://doc.qubes-os.org/en/latest/
#QubesOS #Hypervisor #XenHypervisor #Compartmentalization #Virtualization #Fedora #Debian #Whonix #Qube #Linux
DJ Ware has recently released a video for those who may have heard of #Qubes but never really looked into it as well as those who haven't and may have some interest in something more secure than what other #linux distros offer.
Qubes OS: The Last Bastion of Digital Freedom
#QubesOS #Hypervisor #XenHypervisor #Compartmentalization #Virtualization #Fedora #Debian #Whonix #Qube
Что такое виртуальная машина и чем она отличается от виртуальных систем
В комментариях к одной из моих первых статей на Хабре мне было предложено написать статью про виртуальные машины. Долго думал об этом, было много дел не располагающих к писательству, и вот собрался наконец. Начну с остренького. В ИТ есть только одна настоящая система виртуальных машин. Это zVM. Всё остальное претендующее на это название на самом деле является системами виртуальных ... систем. Давайте разбираться с котлетами и мухами.
#ProxmoxVE 8 to 9 Upgrade #Guide
This #tutorial walks through the in-place upgrade from #Proxmox8 to #Proxmox9, documenting each step along the way. Our goal was to ensure a smooth transition while preserving all existing #virtualmachines, #containers, and configurations. This guide covers verifying system health, updating repositories, performing the upgrade, and confirming the installation afterward, all from the #Proxmox Shell.
https://www.storagereview.com/review/proxmox-ve-8-to-9-upgrade-guide
#hypervisor #vurtualization
Proxmox VE
Proxmox Virtual Environment is a Debian-based system that focuses on providing enterprise-grade LXC and KVM management capabilities, and that I have been using for my homelab.(...)
🌘 Rust 打造 Hypervisor 入門：專為高效模糊測試設計
➤ 深入解析 Hypervisor 核心，掌握 Rust 實現與高效模糊測試技術
✤ https://tandasat.github.io/Hypervisor-101-in-Rust/
這是一門為期一天的密集課程，旨在快速引導學員深入瞭解 Hypervisor 的內部運作原理，並學習如何運用它們來實現高效能的模糊測試（fuzzing）。課程內容涵蓋硬體輔助虛擬化技術的基礎，例如 VMCS/VMCB、訪客-主機模式切換、EPT/NPT 等。此外，課程也將探討用於虛擬機內省（introspection）以進行模糊測試的實用技術，例如例外攔截。學員將透過講義和實際的程式碼練習，在 `Hypervisor-101-in-Rust/hypervisor` 目錄下的程式碼中進行操作。本課程特別使用 Rust 語言，並針對 GCC2023 分支的未完成程式碼進行了調整，以利於逐步練習。
+ 這門課聽起來非常有價值，特別是結合了 Rust 和 Hyper
#Hypervisor #Rust #虛擬化 #模糊測試 #系統程式設計
Write your own Rust-based RISC-V hypervisor in 1000 lines of code by Seiya Nuta:
https://1000hv.seiya.me/en/
https://github.com/nuta/hypervisor-in-1000-lines
Seya also published a guide to write a C-based RISC-V OS in 1000 LoC:
https://github.com/nuta/operating-system-in-1000-lines
🌘 千行 RISC-V Hypervisor 入門
➤ 從裸機開始，用 Rust 編寫你的第一個 RISC-V Hypervisor
✤ https://1000hv.seiya.me/en
本教學旨在引導讀者使用 Rust 語言，從零開始建構一個僅需約 1,000 行程式碼的最小化 RISC-V Hypervisor。這本書是先前《1,000 行作業系統》的續作，將介紹如何進行裸機程式開發，並利用 Rust 的生態系（crates）來加速開發過程，避開不必要的底層實作。最終目標是能夠啟動基於 Linux 的作業系統。
+ 太棒了！一直想學 Hypervisor，RISC-V 和 Rust 的組合聽起來很有趣。
+ 1,000 行聽起來很精簡，希望真的能學到核心概念，而不是被第三方庫牽著鼻子走。
#Hypervisor #RISC-V #作業系統 #程式開發
