#xen — Public Fediverse posts

as far as I understand

#Xen: What is the minimal hardware we need to emulate to get a VM? We might need to customise/change the operating system.

qemu(+kvm): Let's emulate the full PC with mainboard and all chipsets and everything. Damn that is slow. Lets reinvent optimised virtual hardware in the #VirtIO project.

as far as I understand

#Xen: What is the minimal hardware we need to emulate to get a VM? We might need to customise/change the operating system.

qemu(+kvm): Let's emulate the full PC with mainboard and all chipsets and everything. Damn that is slow. Lets reinvent optimised virtual hardware in the #VirtIO project.

as far as I understand

#Xen: What is the minimal hardware we need to emulate to get a VM? We might need to customise/change the operating system.

qemu(+kvm): Let's emulate the full PC with mainboard and all chipsets and everything. Damn that is slow. Lets reinvent optimised virtual hardware in the #VirtIO project.

as far as I understand

#Xen: What is the minimal hardware we need to emulate to get a VM? We might need to customise/change the operating system.

qemu(+kvm): Let's emulate the full PC with mainboard and all chipsets and everything. Damn that is slow. Lets reinvent optimised virtual hardware in the #VirtIO project.

Hugh Grant Tables. Heh. #xen

Xen Hypervisor – Open-Source-Virtualisierung für Systemadministratoren

https://andreas-moor.de/xen-hypervisor-open-source-virtualisierung-fuer-systemadministratoren/

#Xen jetzt mit 5 Jahren Sicherheitssupport

https://borncity.com/blog/2026/03/14/xen-dehnt-support-fuer-sicherheitsfixes-im-stable-branch-auf-5-jahre-aus/

At @bawuenet we're in the process of upgrading our #Xen #xcpng hypervisors to #uefi boot. Of course, we automate things and want to be able to reinstall our hypervisors from network boot. Our EFI netboot system is based on #ipxe which means it can only load EFI binaries. But xcp-ng ships the Xen kernel as a multiboot2 based image.
As probably one of the most weird ways to solve this problem, I've decided to chainload #grub2 from iPXE and learned a bit! 🧵

At @bawuenet we're in the process of upgrading our #Xen #xcpng hypervisors to #uefi boot. Of course, we automate things and want to be able to reinstall our hypervisors from network boot. Our EFI netboot system is based on #ipxe which means it can only load EFI binaries. But xcp-ng ships the Xen kernel as a multiboot2 based image.
As probably one of the most weird ways to solve this problem, I've decided to chainload #grub2 from iPXE and learned a bit! 🧵

At @bawuenet we're in the process of upgrading our #Xen #xcpng hypervisors to #uefi boot. Of course, we automate things and want to be able to reinstall our hypervisors from network boot. Our EFI netboot system is based on #ipxe which means it can only load EFI binaries. But xcp-ng ships the Xen kernel as a multiboot2 based image.
As probably one of the most weird ways to solve this problem, I've decided to chainload #grub2 from iPXE and learned a bit! 🧵

At @bawuenet we're in the process of upgrading our #Xen #xcpng hypervisors to #uefi boot. Of course, we automate things and want to be able to reinstall our hypervisors from network boot. Our EFI netboot system is based on #ipxe which means it can only load EFI binaries. But xcp-ng ships the Xen kernel as a multiboot2 based image.
As probably one of the most weird ways to solve this problem, I've decided to chainload #grub2 from iPXE and learned a bit! 🧵

So back on #QubesOS / #Xen. There is definitely something wrong with how it forwards the A380 into the #windows VM.

Now that I've remote desktop enabled (and can conenct with the A380 disconnected just fine) I now can also see a black screen via RDP when the A380 is passed into it.

(Note: passing the two end devices, aka the one for the video and the one for the audio of the A380 worked just fine in KVM on #NixOS. So it is something Xen/QubesOS does that breaks it...

So rebooted into NixOS and after having compiled some food I've tried passing through the end devices using KVM. And well it works with KVM. So what is wrong with my #QubesOS aka. #Xen config then?

Also because I thought it was funny I also tried attaching the Intel A380 to a windows XP VM.
The generic driver for the video card doesn't work.
It has a generic audio driver that almost works. It matches the device but fails to start :p

Oh, Xen cannot pcie passthrough "non endpoint devices" like KVM can. That makes things unnecessarily difficult...

Why can't I just passthrough the entire PCI-PCI bridge device?

#Xen #QubesOS #KVM

Sooo are we just going to ignore the vulnerability qsb-091-2023 "Xen Security Notice 1: winpvdrvbuild.xenproject.org potentially compromised"?

I do not see any more recent build of the XEN Windows PV Drivers.

Even the ones linked on the website https://xenproject.org/resources/downloads/ right now are only from 2023-07-13. Which is 11 days before that vulnerability was published.

Also the part that they replaced the executables with a warning text doesn't seem to apply to that website either...

#infosec #Xen

Each time I read stuff about Xen I want to prefer it. But then I see the benefit of running VMs and containers in parallel which is kind of not possible with Xen. Then I use bhyve/vmd/vmm/… again.
#Xen

Is there any technical reason why one would consider using Xen (or XCP-ng) over KVM at this point?

#Xen #XCP_ng #KVM #HomeLab

Is there any technical reason why one would consider using Xen (or XCP-ng) over KVM at this point?

#Xen #XCP_ng #KVM #HomeLab

What do you think, what is the better thing to user for a home lab setup with 1 and maybe in 1-2 years a 2nd host that is also used as the main desktop.

Or should I go with a full on VCF install (just kidding, I'd at most I can run it nested, as I'd have almost 0 resources available once all of its management components have booted up)

#HomeLab #NixOS #qemu #KVM #XEN #QubesOS

Morgen muss ich mein XCP-NG-Shirt anziehen, um wieder herunterzukommen von #AWS ESC und dem #BSI‑Thread, und ein Statement für eine großartige europäische Virtualisierungslösung von @vates abgeben. 😌

Wir können in Europa nämlich auch IT und so …

#vates #xcpng #virtualization #opensource #awsesc #digitalsovereignty #xen

Xen from Omega X has covered The Truth Untold by BTS
https://www.youtube.com/watch?v=CTFvGPGHi1o

#kpop #CoveredByKpop #Xen #OmegaX #Jinwoo #1Team

Xen from Omega X has covered The Truth Untold by BTS
https://www.youtube.com/watch?v=CTFvGPGHi1o

#kpop #CoveredByKpop #Xen #OmegaX #Jinwoo #1Team

Xen from Omega X has covered The Truth Untold by BTS
https://www.youtube.com/watch?v=CTFvGPGHi1o

#kpop #CoveredByKpop #Xen #OmegaX #Jinwoo #1Team

Xen from Omega X has covered The Truth Untold by BTS
https://www.youtube.com/watch?v=CTFvGPGHi1o

#kpop #CoveredByKpop #Xen #OmegaX #Jinwoo #1Team

Xen from Omega X has covered The Truth Untold by BTS
https://www.youtube.com/watch?v=CTFvGPGHi1o

#kpop #CoveredByKpop #Xen #OmegaX #Jinwoo #1Team

I'm looking for virtualization-based desktop Linux setup

I love virtualization in Linux and I would like to have operating system which will work only as minimal, air-gapped as much is possible host for my guest operating systems. Qubes OS project really interested me but it’s based on Xen hypervisor so it might cause troubles with GPU Passthrough which is really important for me also I’m more interested in KVM. In my case it’s not only about security and privacy but also about fun and learning. What can you recommend? I think that good choice might be Gentoo Linux because it allows for minimal installation and remove unnecessary software like CUPS, Bluetooth entirely with flags which will be great option for host only OS. But I had experience with Gentoo and it’s not easiest way 😅 Debian might be easier option but I will have less control over my system. Maybe you have other interesting options?

https://piefed.social/c/linux/p/1581319/i-m-looking-for-virtualization-based-desktop-linux-setup

I'm going to admit that I am doing something immature in my #homelab and I'm looking for opinions. I've got multiple #XCPng hosts, all using local storage. I have no NFS or iSCSI storage. That's kinda silly. Shared storage is super useful and I'm literally not using it.

Unless I go to some serious effort to make a high-performance SAN, I expect network storage performance to be so-so for VM storage, but maybe I'm too pessimistic. I currently only have copper gigabit in the rack. No fiber, no 2.5G copper or anything like that. I'm not sure if that's going to be viable for NFS or iSCSI.

I could dedicate a host to running TrueNAS Core with a bunch of storage. But what has always bugged me about this is that my storage host becomes a single point of failure for all the compute nodes. #TrueNAS is super reliable but everything has to reboot once in a while, and these stupid enterprise-grade servers take anywhere from 4-8 minutes to boot. If I had a single storage node, and I needed to reboot it for an OS upgrade, everything would hang for a while. That's no good. Not updating the OS on the storage system is also not good.

So what am I supposed to be doing for shared storage on a #Xen cluster? How do I avoid a storage host becoming a single point of failure? How do you update and reboot a storage node, without disrupting everything that depends on it?

#selfhosting #san #storage

Xen 4.21 open-source type-1 hypervisor adds a new PDX compression algorithm, updated toolchain requirements, and improvements across x86, Arm, and RISC-V.
https://linuxiac.com/xen-4-21-hypervisor-arrives-with-new-pdx-compression/

#xen #opensource #virtualization

🐢🎩 Look! ETH Zürich's team of digital wizards just unearthed another mystical attack, VMScape! 💥 But wait—Xen's #microkernel struts around untouched, laughing at its fallen peers KVM and VMware. 🕵️‍♂️ Apparently, the new recipe for security involves adding a sprinkle of "microkernel" and a dash of "not giving a damn." 🤷‍♂️
https://virtualize.sh/blog/vmscape-and-why-xen-dodged-it/ #ETHZürich #VMScape #cybersecurity #Xen #HackerNews #ngated

VMScape and why Xen dodged it

https://virtualize.sh/blog/vmscape-and-why-xen-dodged-it/

#HackerNews #VMScape #Xen #Virtualization #Tech #News #Analysis

[Перевод] Как я убедил виртуальную машину, что у неё есть кулер

Зачем вообще этим заморачиваться? Некоторые образцы malware выполняют различные проверки, чтобы определить, запущены ли они в виртуальной машине. Один из самых частых способов — проверка наличия определённых аппаратных компонентов, обычно не эмулируемых в виртуальных средах. Один из таких компонентов — кулер процессора . Например, malware может проверять наличие кулера процессора, поискав в WMI класс Win32_Fan : wmic path Win32_Fan get * Они делают это, чтобы не запускаться в виртуальных машинах, усложнив таким образом процесс анализа для исследователей безопасности. Зловредное ПО может определять, запущено ли оно в виртуальной машине, множеством разных способов. Есть различные классы WMI, позволяющие обнаружит присутствие виртуальной машины, например, Win32_CacheMemory , Win32_VoltageProbe и множество других . В этом посте я расскажу о кулере процессора. Мне просто понравилась идея убедить виртуальную машину, что он у неё есть. Однако такой же подход можно применить к другим аппаратным компонентам и классам WMI.

https://habr.com/ru/articles/923314/

#виртуальные_машины #malware #xen #qemu #qemukvm

As you can see in the screen cap the project has grown beyond just a one-man show

It is vital to understand that the project would not have been scaled in this manner & at this logarithmic rate, had it not been for important partners, who due to the power of the FediVerse, were quickly introduced to the project

Did not only gave words of interest they actually contributed with giving server space to boxyBSD.

Reed the Alt text voor more information

#BoxyBSD #programming #Coding #Debian #GNU #Linux #FediVerse #freeBSD #HowTos #KVM #Module #Development #OpenSource #OS #ProxLB #LoadBalancer #Proxmox #Ansible #Virtualization #Xen #Bash #csh #zsh #ksh #tksh

As you can see in the screen cap the project has grown beyond just a one-man show

It is vital to understand that the project would not have been scaled in this manner & at this logarithmic rate, had it not been for important partners, who due to the power of the FediVerse, were quickly introduced to the project

Did not only gave words of interest they actually contributed with giving server space to boxyBSD.

Reed the Alt text voor more information

#BoxyBSD #programming #Coding #Debian #GNU #Linux #FediVerse #freeBSD #HowTos #KVM #Module #Development #OpenSource #OS #ProxLB #LoadBalancer #Proxmox #Ansible #Virtualization #Xen #Bash #csh #zsh #ksh #tksh

As you can see in the screen cap the project has grown beyond just a one-man show

It is vital to understand that the project would not have been scaled in this manner & at this logarithmic rate, had it not been for important partners, who due to the power of the FediVerse, were quickly introduced to the project

Did not only gave words of interest they actually contributed with giving server space to boxyBSD.

Reed the Alt text voor more information

#BoxyBSD #programming #Coding #Debian #GNU #Linux #FediVerse #freeBSD #HowTos #KVM #Module #Development #OpenSource #OS #ProxLB #LoadBalancer #Proxmox #Ansible #Virtualization #Xen #Bash #csh #zsh #ksh #tksh

As you can see in the screen cap the project has grown beyond just a one-man show

It is vital to understand that the project would not have been scaled in this manner & at this logarithmic rate, had it not been for important partners, who due to the power of the FediVerse, were quickly introduced to the project

Did not only gave words of interest they actually contributed with giving server space to boxyBSD.

Reed the Alt text voor more information

#BoxyBSD #programming #Coding #Debian #GNU #Linux #FediVerse #freeBSD #HowTos #KVM #Module #Development #OpenSource #OS #ProxLB #LoadBalancer #Proxmox #Ansible #Virtualization #Xen #Bash #csh #zsh #ksh #tksh

As you can see in the screen cap the project has grown beyond just a one-man show

It is vital to understand that the project would not have been scaled in this manner & at this logarithmic rate, had it not been for important partners, who due to the power of the FediVerse, were quickly introduced to the project

Did not only gave words of interest they actually contributed with giving server space to boxyBSD.

Reed the Alt text voor more information

#BoxyBSD #programming #Coding #Debian #GNU #Linux #FediVerse #freeBSD #HowTos #KVM #Module #Development #OpenSource #OS #ProxLB #LoadBalancer #Proxmox #Ansible #Virtualization #Xen #Bash #csh #zsh #ksh #tksh

Please read the screen cap closely and also read the Alt text & realize how much boxyBSD has blown up

600 plus VMS!!!

#BoxyBSD #programming #Coding #Debian #GNU #Linux #FediVerse #freeBSD #HowTos #KVM #Module #Development #OpenSource #OS #ProxLB #LoadBalancer #Proxmox #Ansible #Virtualization #Xen #Bash #csh #zsh #ksh #tksh

Please read the screen cap closely and also read the Alt text & realize how much boxyBSD has blown up

600 plus VMS!!!

#BoxyBSD #programming #Coding #Debian #GNU #Linux #FediVerse #freeBSD #HowTos #KVM #Module #Development #OpenSource #OS #ProxLB #LoadBalancer #Proxmox #Ansible #Virtualization #Xen #Bash #csh #zsh #ksh #tksh

Please read the screen cap closely and also read the Alt text & realize how much boxyBSD has blown up

600 plus VMS!!!

#BoxyBSD #programming #Coding #Debian #GNU #Linux #FediVerse #freeBSD #HowTos #KVM #Module #Development #OpenSource #OS #ProxLB #LoadBalancer #Proxmox #Ansible #Virtualization #Xen #Bash #csh #zsh #ksh #tksh

Please read the screen cap closely and also read the Alt text & realize how much boxyBSD has blown up

600 plus VMS!!!

#BoxyBSD #programming #Coding #Debian #GNU #Linux #FediVerse #freeBSD #HowTos #KVM #Module #Development #OpenSource #OS #ProxLB #LoadBalancer #Proxmox #Ansible #Virtualization #Xen #Bash #csh #zsh #ksh #tksh

Please read the screen cap closely and also read the Alt text & realize how much boxyBSD has blown up

600 plus VMS!!!

#BoxyBSD #programming #Coding #Debian #GNU #Linux #FediVerse #freeBSD #HowTos #KVM #Module #Development #OpenSource #OS #ProxLB #LoadBalancer #Proxmox #Ansible #Virtualization #Xen #Bash #csh #zsh #ksh #tksh

An insightful article was written by @gyptazy
If this is of your interest, and you take the time to read, analyze between the lines what has been said, you will learn a lot from this

If you are passionate about Proxmox like I am, you will love to read these kind of posts, because they've been systematically, logically and relatively simply formulated, so that it's digestible for the end user of proxmox all the way up to the diehard programmer who hacks in Proxmox code

#BoxyBSD #programming #Coding #Debian #GNU #Linux #FediVerse #freeBSD #HowTos #KVM #Module #Development #OpenSource #OS #ProxLB #LoadBalancer #Proxmox #Ansible #Virtualization #Xen #Bash #csh #zsh #ksh #tksh

An insightful article was written by @gyptazy
If this is of your interest, and you take the time to read, analyze between the lines what has been said, you will learn a lot from this

If you are passionate about Proxmox like I am, you will love to read these kind of posts, because they've been systematically, logically and relatively simply formulated, so that it's digestible for the end user of proxmox all the way up to the diehard programmer who hacks in Proxmox code

#BoxyBSD #programming #Coding #Debian #GNU #Linux #FediVerse #freeBSD #HowTos #KVM #Module #Development #OpenSource #OS #ProxLB #LoadBalancer #Proxmox #Ansible #Virtualization #Xen #Bash #csh #zsh #ksh #tksh

An insightful article was written by @gyptazy
If this is of your interest, and you take the time to read, analyze between the lines what has been said, you will learn a lot from this

If you are passionate about Proxmox like I am, you will love to read these kind of posts, because they've been systematically, logically and relatively simply formulated, so that it's digestible for the end user of proxmox all the way up to the diehard programmer who hacks in Proxmox code

#BoxyBSD #programming #Coding #Debian #GNU #Linux #FediVerse #freeBSD #HowTos #KVM #Module #Development #OpenSource #OS #ProxLB #LoadBalancer #Proxmox #Ansible #Virtualization #Xen #Bash #csh #zsh #ksh #tksh

An insightful article was written by @gyptazy
If this is of your interest, and you take the time to read, analyze between the lines what has been said, you will learn a lot from this

If you are passionate about Proxmox like I am, you will love to read these kind of posts, because they've been systematically, logically and relatively simply formulated, so that it's digestible for the end user of proxmox all the way up to the diehard programmer who hacks in Proxmox code

#BoxyBSD #programming #Coding #Debian #GNU #Linux #FediVerse #freeBSD #HowTos #KVM #Module #Development #OpenSource #OS #ProxLB #LoadBalancer #Proxmox #Ansible #Virtualization #Xen #Bash #csh #zsh #ksh #tksh

An insightful article was written by @gyptazy
If this is of your interest, and you take the time to read, analyze between the lines what has been said, you will learn a lot from this

If you are passionate about Proxmox like I am, you will love to read these kind of posts, because they've been systematically, logically and relatively simply formulated, so that it's digestible for the end user of proxmox all the way up to the diehard programmer who hacks in Proxmox code

#BoxyBSD #programming #Coding #Debian #GNU #Linux #FediVerse #freeBSD #HowTos #KVM #Module #Development #OpenSource #OS #ProxLB #LoadBalancer #Proxmox #Ansible #Virtualization #Xen #Bash #csh #zsh #ksh #tksh

@MsDropbear42 the type-1/type-2 terminology should probably be retired at this point. #kvm exhibits a lot of type-2 behaviour (e.g. guests are processes to the kernel) although being #Linux it accesses the hardware directly. #Xen looks more like a typical type-1 layered #hypervisor although a lot of #hardware management is delegated to the #dom0 guest. And that's before you look at the architectural differences between for example #x86 and #arm (with and without #vhe).

If any #homelab folks have some spare disk space and bandwidth and want to help #resist, you can #selfhost an instance of ArchiveTeam Warrior as a VM.

The VM appliances are downloadable off of GitHub and then you just launch the VM and let it work.

If you use #xcp as your #xen hypervisor, and #xenorchestra to manage it, you might think you can just give it the GitHub URL and import. Sadly, no. I got an error. But the VM is only 165M, so if you download it to your laptop and then upload it via the XO web interface, it's trivial to launch.

New learning unit in our #NetworkAutomation #eAcademy focused on #Xen, a highly efficient and scalable #hypervisor 👉 https://connect.geant.org/2024/10/04/new-learning-unit-in-the-network-eacademy-hypervisor-based-virtualisation-xen

Whether you’re just starting with virtualisation or looking to expand your expertise, this course will provide you with the skills to deploy and manage virtualised environments using Xen.

👤 Trainer: Bojana Koteska, UKIM
⏳Duration: 90min

#Network #Virtualisation #OAV #Research #Education #Networking #eAcademy #NRENs #Training #LearningAndDevelopment