Questions tagged [virtual-machine]
A virtual machine (VM) is a guest Operating System running in a completely isolated environment within a normal host operating system. Modern virtual machines are implemented with either software emulation or hardware virtualization or (in most cases) both together.
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Internal Error: libxenlight failed to create new domain "FreeBSD-13.2"
I tried to use xen as a hypervisor instead of kvm + libvirt + virt-manager to boot FreeBSD on my ARM Chromebook where I have installed Devuan 5,since Stefano said :
Libvirt + virt-manager with the xen ...
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same ip and subnet in 2 different bridges
I am trying to create 2 different virtual networks in the same ip range (not using NAT) in virt manager.
This doesn't work with the gui or editing the xml of the new virtual network.
Is creating ...
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SMBus controller is not enabled
I worked with EVE-ng, everything was fine. Recently, it was necessary to increase the space on the virtual disk for eve, all the tasks could not be performed. After adding an additional disk and then ...
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How to save GRE tunnel in my vm?
Well, I created a gre tunnel in virtualbox connecting two linux vms, and it worked very well. But whenever I reboot the vms, the gre simply disappears. Is there any command I can use to save gre? Or, ...
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Passthough special keys from keyboard to guest OS?
I have a MS Natural Keyboard 4000 and I want to use its special keys in my guest OS. Both are Linux Mint.
Without any additional configuration some keys are passed (Home, Mail, Volume, Fav, etc.) but ...
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Iptables redirect outside requests to 127.0.0.1 (VirtualBox)
I have a guest virtual machine installed with the output:
ifconfig:
enp0s3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 10.0.2.15 netmask 255.255.255.0 broadcast 10.0.2.255 inet6 ...
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modprobe: FATAL: Module cifs not found in directory (Wrong version)
Running Ubuntu 22 in a Windows VM. Trying to give it access to a shared folder on my windows drive.
mount -t cifs -o username=user '//ip/folder' /folder_on_ubuntu
mount error: cifs filesystem not ...
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FATAL: do_vbutil_kernel: Missing required config file
I'm trying to compile Xen on my ARM Chromebook following this tutorial :
https://wiki.xenproject.org/wiki/Xen_ARM_with_Virtualization_Extensions/Chromebook
I've reached almost on the end of tutorial ...
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exynos-mixer 14450000.mixer: [drm:exynos_drm_register_dma] *ERROR* Device 14450000.mixer lacks support for IOMMU
We are trying to boot Xen on a Samsung XE303C12 Chromebook aka "snow" following the suggestions in the slide show presentation here:
https://www.slideshare.net/xen_com_mgr/xpds16-porting-xen-...
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Recurring disk-related issues when booting virtual machine
I'm experiencing a recurring issue with my virtual Ubuntu server. Every three days, this problem occurs exclusively on this particular virtual machine. The server requires a journal recovery, followed ...
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Using IPMI in virtualization - what is the difference betweem virtualbmc project of openstack and QEMU device ipmi-bmc-sim?
I'm setting up a virtual lab on my laptop (using kvm/qemu), and need an IPMI solution (e.g., to use STONITH as is etc.).
I have looked at virtualBMC and QEMU ipmi-bmc-sim (search for ipmi on the page)
...
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RHEL9 make most of virtualisation features from RHEL7, how to upgrade to a modern OS?
I have a hypervisor that is installed on a CentOS 7.9.2009, with qemu-kvm. I have some virtualised old VMs that I would like to migrate elsewhere on a more modern system.
I tried CentOS 9.0 and Rocky ...
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What does it mean that "virtualbox" would like to receive keystrokes from any application? Is this safe or malicious
I'm using a MacBook and I'm installing my first virtual machine using virtualboxmanager I received from a google IT Support Specialist course. I'm currently learning about the command line linux bash ...
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KVM error under MX Linux 21 after upgrade
I got KVM error after hardware upgrade upgrade (more RAM and changed MB with same model from another computer (got 2 equal) due to broken ports). It worked as a charm, now I got error:
Traceback (...
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UNIX SVR4.2 > How do I find the IP address on a Virtualbox system?
I have installed a VirtualBox VM of UNIX System V Release 4.2 and have discovered just how barren the internet is on documentation of it. Only a few modern commands exist, although obviously because ...
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Why is it recommended to add nodatacow to a VM image on BTRFS, but using a QCOW2 disk is ok?
As far as I know, it is recommended to disable copy on write for VM images to avoid performance degradation on BTRFS. However, no one recommends against using qcow2 disk image format, despite being a ...
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How to create a virtual monitor to confine a full-screen application
I use Weylus to draw remotely in my Debian system from my smartphone which dimensions exceed all those of my physical monitors and are not a scale of them. The problem is in reason of their dimensions ...
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Debian virtual machine no connectivity with two network adapters
I am running several Debian 12 (both host and guests) virtual machines using VirtualBox.
All of a sudden, today they started having connectivity issues (i.e., I couldn't ping 8.8.8.8). I recently ...
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Performance problems when running Wireguard between virtual machines
I’m running into performance problems with Wireguard tunnels running between two virtual machines on the same hypervisor (running under Qemu/KVM) and I would greatly appreciate any insights/advice ...
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Why a user could run qemu virtual machine in KVM mode without access to /dev/kvm on Debian 12 (bookworm)?
One user account A, could run qemu VMs with kvm enabled, with the option -enable-kvm.
But user A does not have access to /dev/kvm. The related user groups and /dev/kvm permission is as follows.
$ id
...
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VMWare Fusion Linux Ubuntu not recognizing mac OS, asking to erase disk
Im trying to install Ubuntu on my virtual machine, VMWare Fusion. I'm running version 12.2.5, and I downloaded the .iso file for ubuntu for version 23.4 here: https://ubuntu.com/download/desktop
I ...
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Problems with booting same Linux installation on both physical System and VM for dual use
The question basically boils down to "how does a Linux installation need to be setup in order to be able to do boot from both VM and the physical machine?"
I try to achieve 2 goals with this ...
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Ubuntu Virtual Machine not detecting Arduino, it yields "Can't attach the USB"
I am facing an issue when I try to detect the Arduino on the Virtual Machine which is running Ubuntu 20.04. When I connect Arduino on my Laptop (Macbook), the Arduino IDE on the Mac detects the ...
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Error : virHostCPUGetKVMMaxVCPUs: KVM is not supported on this platform: Function not implemented
I'm running Debian bookworm on my ARM Chromebook,model "xe303c12" and I've recompiled the kernel (5.4) to enable KVM,so now my system sounds like this :
$ lsb_release -a
No LSB modules are ...
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131
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Laggy mouse cursor on windows guest
I have virt-manager, qemu, kvm setup. I have installed Windows 11 and Arch Linux guests. On Arch Linux, I don't have any additional guest drives for virtualization to work.
On Arch Linux, when the ...
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Joining mininet hosts to Active DIrectory VM
I am trying to add mininet hosts to domain in a test environment. I have a host OS (WIn 10) with 2 VMs. One mininet VM and the other WIndows Server 2012 VM which is domain controller. I want the ...
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Is it possible to get a resolution greater than 1920x1200 on openbsd in qemu ( virt-manager)?
How to increase screen resolution in openbsd if it possible? It is necessary to have a resolution such as 2k or 4k.
Tried virtio, qxl there is even smaller than in VGA, checked the maximum resolution ...
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archlinux on vm (created by libvirt) can not start up?
there is the domain xml for vm0x01:
<domain type='kvm' id="1">
<name>vm0x01</name>
<uuid>4dea24b3-1d52-d8f3-2516-782e98a23fa1</uuid>
<genid>...
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File Permission problems with a Linux VM - unable to read file
I have built a Rocky Linux (9.1) Virtual machine, and I am having permission problems with some of the files. Note also (after looking at the linked 'similar questions'), this is a local mount, not ...
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Is it possible to implement kvm/qemu VM guests and host connected through shared memory to collect and cache data between them
The configuration:
host: Ubuntu:20.04 OS
guest: Ubuntu20.04 OS
The two files use the 9p file system for interworking.
The mount command is as follows,
mount -t 9p -o trans=virtio tmp_shared /mnt -...
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Can't connect: No route to host -- l2ping Linux
I'm testing out l2ping via a Ubuntu VM on a MacOS machine, ran using UTM QEMU.
The following command:
sudo l2ping -s 5000 -f <my speaker's bluetooth MAC address>
produces
Can't connect: No ...
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QEMU-KVM Freezes on Guest Reboot - How do I fix this?
I haven't tested it on a Linux guest, but on a Windows 10 virtual machine guest most reboots freeze in the middle of starting back up. This has never happened with me on VirtualBox, and I wouldn't ...
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Can not find USB stick after attach it to VM
Am an amateur debian11 user (In contrast to an expert :-). My pc installed Debian 11 KVM/QEMU. Under Virt-Manager, VM connect to host USB successfully with the option == redirect USB device.
Need to ...
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Two host name for a virtual machine - 1st name given during development release , 2nd name in production
We want release VM images to customer .
After deploying VM image, customer want to have their own VM name, basically two host name is needed
1st name given during development let us call "factory ...
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Editing a debian img with QEMU
I'm trying to run an existing debian img with QEMU, edit it by installing custom packages and adding various configs, verify that it works and then write it to an sd card so I can boot it from a ...
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Share folders between host and Debian(guest) using Vbox
After following these steps to share folders between host and guest, it works correctly without any errors, but I have a problem: when I turn off the machine or restart it, I cannot share the same ...
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How to block a range of ip adresses with libirt's nwfilter for a specific mac(VM)
I'm a bit lost how to block a range of Ip adresses(preferbly for a specific mac adress of a VM)
<filter name='local-fileserver-only' chain='ipv4' priority='-700'>
<uuid>blank for now</...
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qemu-system-x86_64 not found when moving VMs between computers
I am moving GNOME Boxes virtual machines from Fedora to Guix following the guide on Fedora wiki.
On the Fedora workstation:
$ virsh list --all
Id Name State
-------------------------------...
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Incorrect MAC error while using ssh from windows to linux
I am trying to ssh from a windows system to an azure centos vm. But I am getting error incorrect MAC ... On further checking i identified it only happens when the mac algorithm used is umac-128-etm@...
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Separating work and personal network activity [closed]
I asked a question here that got no answers and only one comment (and then my own answer), so maybe I was asking the wrong question.
I use the same computer for work and for personal use. I keep the ...
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Disk size issue in Linux lite running in VirtualBox and different information from different apps
I have a VM running Linux Lite 5 for quite some time now. Recently I've been having disk space issues.
I have cleared as much as I can and I have also increased the size of the virtual disk in virtual ...
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is it possible to oversell KVM VPS? [closed]
I found a cloud service provider selling VPS with a cheaper price compared to other companies. They claim to use kvm for virtualization so it made me curious is overselling hardware the reason of this ...
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Virtualize 3070 For Ubuntu VM and Win 11 Host
I am using Hyper-V as my hypervisor and would like to virtualize my 3070 and pass it to the Ubuntu VM.
Is it possible to do this without DDA? From what I have read, DDA gives the entire GPU to the VM ...
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isc-dhcp-server and dnsmasq is not working in Virt Manager(debian) KVM
I am trying to make a DHCP server in a VM what I pass a PCI ethenet adaptor to.
with dnsmasq I get the "interface ens7 does not exist"
dnsmasq.conf
interface=ens7
port=53
I tryed isc-dhcp-...
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virt-sysprep libguestfs read-only filesystem error when cloning VM
I am trying to follow this guide to clone a qemu VM. However, when I try to run virt-sysprep on the image it gives me this error:
virt-sysprep: error: libguestfs error: rm_f:
/$Recycle.Bin/S-1-5-21-...
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Can't write to Live CD system
I am not new to Linux, but am new to creating my own virtual machine environment. I am using Linux to learn how to do penetration testing, and have been required to download lots of different software ...
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97
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Fedora Incorrect Login when installing vm through qemu
I am trying to boot fedora vm on Linux Test Pc from qemu. It actually shows the temporary password for first login. But when I try that password it is saying Login is Incorrect.
I don't know why the ...
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VirtualBox 7.0 guest freezes whenever the guest is switched into full-screen mode, fix?
On my Linux Mint 21.1 Cinnamon running an nvidia-driver-530...
VirtualBox 7.0 guest freezes whenever the guest is switched into full-screen mode. The exact version follows:
$ apt-cache policy ...
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KVM vm network performance is super slow compared to host
I am running a KVM Windows 11 VM guest with an arch linux host. I have tried across multiple windows and linux guests and the network performance is the same across the guests, so this is not a guest ...
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QEMU command with NVME boot is functional but cannot convert to virt-install parameters
I'm attempting to convert a working qemu command to virt-install parameters. The working command is:
qemu-system-x86_64 -bios /usr/share/OVMF/OVMF_CODE.fd -boot c -drive file=/vm/image.qcow2,if=none,...
