Hetzner is already doing it with very energy efficient Ampere ARM servers delivering world-class-cost-and-energy-saving-virtual-servers. (Gigabyte has them as well UNTESTED!) #SuperCharge #IT processes with #OpenSource + #GNU #Linux (call it #GNU #Linux and give the dude that wrote gcc some […]
Yes… … well… YESSS finally it works! BUT! IT’S VERY BUGGY! programs crash now and then… so it’s not “production” ready. … the foxlet approach worked 😀 (also got stuck in the last minute of setup of mojave… but after […]
snapshots are stored inside the qcow2 harddisk file of the vm, which is good in terms of “simple”, just one file, where in virtualbox there is the disk.vdi and snapshots are stored in a separate folder as separate files. when […]
update: 2024-04: system running well the system is running very well on GNU Linux Debian 12 + Windows (for gaming) dualboot (first install windows then GNU Linux and let grub handle the boot) the system reached it’s limits with Generation […]
Even managed to run this system ONLY with SOLAR POWER from March to November (but not winter X-D) Of course RISC(V/ARM) based (mobile) gaming systems would be those that use the least amount of power per frame 😀 But it […]
virt-manager Links: run search: https://dwaves.de/?s=kvm GNU Linux Debian 10/11/Ubuntu – how to install kvm virtualization (qemu) – basic virsh commands – kvm cheat sheed – howto workaround virt-manager “emulator may not have search permissions for the path”
# if the user wants to be converted from VirtualBox to kvm # 1. first clone the VirtualBox vm into a new vm (to consolidate all snapshots into one vdi # 2. convert file format # convert qcow2 to vdi […]
with virt-manager, it is a breeze to select the PCI device (in this case enp3s0 NIC) for pass through to guest vm, in case the vm shall get it’s very own dedicated nic: notice: the passed NIC dissapears from the […]
it is actually like this, in virt-manager, that chipset and bios can only be changed during first setup “begin installation” it then is fixed and can not be changed in virt-manager
let’s say: in theory – it works – in practice vmware and kvm (RedHat) would REALLY have to work together to make this work for real. in reality – there are (currently) massive sata harddisk driver problems between esxi 6.7 […]
first off the praise: kvm-qemu is a high performance nicely scriptable virtualization system if it works, it can do pretty things 🙂 IN CONTRAST TO iESXI SH** WARE CLONING A VM IS A EASY AS: virt-clone –original debian12 –name debian12-clone […]
a bit of a warning: the NAT fowarding script is a bit of hardcore kvm “hack” that might not work (kvm is under development), wish to kvm and virsh-manager developers: please please integrate an easy way (like in virtualbox) for […]
how to setup kvm on Debian: hostnamectl; # tested on Static hostname: lenovo Operating System: Debian GNU/Linux 10 (buster) Kernel: Linux 4.19.0-17-amd64 Architecture: x86-64 hostnamectl; # also on Operating System: Debian GNU/Linux 12 (bookworm) Kernel: Linux 6.1.0-17-amd64 # with virsh […]
“thin provisioning” means “virtually” allocate more harddisk space, than the harddisk (physically) has, then grow the virtual harddisk file according to it’s needs (store more files = size of harddisk.img grows dynamically) # debian 10; # tested via bash terminal: […]
hostnamectl; # tested on Static hostname: giada Icon name: computer-desktop Chassis: desktop Operating System: Debian GNU/Linux 10 (buster) Kernel: Linux 4.19.0-17-amd64 Architecture: x86-64 su – root apt update # will install Java Web Start and openjdk-11-jre apt install icedtea-netx java-common […]
so RedHat developed the virsh manager, but not qemu itself. https://stackoverflow.com/questions/43704856/what-are-the-differences-between-qemu-and-virtualbox QEMU is a generic and open source machine emulator and virtualizer. When used as a machine emulator, QEMU can run OSes and programs made for one machine (e.g. an […]
BACKGROUND INFO: how does kvm use qemu? KVM (Kernel-based Virtual Machine) is a virtualization solution for Linux on x86 hardware. It allows running multiple virtual machines (VMs) on a GNU Linux host by leveraging hardware virtualization extensions such as Intel […]
got the server cheap from ebay. has unfortunately only 4x 2.5″ SAS (3.5″ would be better = more storage) one SAS drive already faulty. using the native Hardware RAID10 (4x 75GByte Hitachi HGST Ultrastar C10K600 450GB (HUC106045CSS600) 2,5″ SAS2 64MB […]
(IPMI) https://en.wikipedia.org/wiki/Intelligent_Platform_Management_Interface IPMI is a series of specifications that provide standardized interfaces to the so-called “platform management” services. (src) ((BMC) Baseboard Management Controller) https://de.wikipedia.org/wiki/Baseboard_Management_Controller allows you to see the screen of your server via a simple java enhanced webbrowser – […]
as addressed here, kvm allows GPU pass through to VM. Basically making it possible to run Sidexis4 client on a linux host. when connecting via RDP (Microsoft Remote Desktop) Sidexis complains about the Graphic card being not suitable… but starts […]
update: gaming inside kvm vm on GNU Linux host? YES! but TWO (2x) GPUs / dedicated grafix cards are needed! (or one one onboard gpu and one PCIE dedicated GPU card) “QEMU/KVM VGA PCI Pass-Through of a dedicated AMD Radeon […]
the best about samba: thanks for samba, it provides users with a fast (of course depends also on harddisk speed) rock-solid no-limit-to-maximum-users file-server for maximum file-transfer-and-sharing-and-storage productivity (and they will USE that T: temp drive for EVERYTHING! prepare for TERRABYTES […]
usually it works like this… the user sets upa Template (like basic WindowsXXX or Linux installation) and clone this template for various purposes (spezialize on…). in KVM it looks like this: su – root virt-clone –connect=qemu:///system –original CloneThisVM –name NameOfClone […]
“Error starting domain: internal error Network ‘default’ is not active.” how to permanently fix it: su – root; # become root virsh net-start default virsh net-autostart default Details: Error starting domain: Requested operation is not valid: network ‘default’ is not […]
Posted on October 4, 2014 by Dan Nanni Leave a comment source: http://ask.xmodulo.com/change-default-location-libvirt-vm-images.html Question: I am using libvirt and virt-manager to create VMs on my Linux system. I noticed that the VM images are stored in /var/lib/libvirt/images directory. Is there […]
gui-way: DO NOT USE ANY OTHER HARDDISK FORMAT THAN THE DEFAULT QCOW2!!! with VirtualBox it’s the same. THEORETICALLY they support Micro$oft’$ HYPER_V_DISK_IMAGE.VHD BUT PRACTICALLY THINGS WILL FALL APART QUICKLY! (broken/corrupted disk image) So just stick to the defaults and you […]
You can not have VirtualBox and KVM running on the same host at once. If you want to do Android App development on Linux (which uses KVM for running the Emulator) then you have a problem 😀 KVM seems to […]
This video was published on Sep 13, 2012… I/O-Wise KVM does not seem to do a lot of RAM-Caching… VirtualBox does? dd shurely runs a lot faster on VirtualBox 😀 KVM does some impressive GPU-Pass-Through: Gaming on a Linux host […]
Virtualization is a must, if you want to have 50x mail servers, 20x windows servers and 10x linux servers on the same machine 😉 meaning: if your requirements reach a certain complexity, you will not be able to get all […]