Questions tagged [linux-kvm]
Linux Kernel Virtual Machine is a virtualization system (VM)
368
questions
1
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0answers
14 views
QEMU/KVM emulating wacom-tablet
I'm trying to emulate an old machine and have working xserver with absolute input,
I've managed to add wacom driver to the guest (and I suppose that's the best I can do). The wacom driver does not ...
1
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1answer
33 views
QEMU/KVM emulating vmware graphics
I'm trying to migrate to virtual and old physical machine with nvidia GPU.
I've succesfully done it with virtualbox with vmware graphics emulation, worked like charm after some tuning.
On the other ...
1
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0answers
14 views
how to configure firewalld, port-forward to specific VM:port and permit VM to external
I have KVM/libvirt env as follows.
em1(external)
|
bridge0
/ | \
VM1 VM2 VM3
I hope to access to VM1(192.168.122.103) with 9091 port from external with following.
# firewall-cmd -...
1
vote
1answer
26 views
KVM / QEMU - Confused by bridge ip address (on Debian host)
I have followed a few guides to getting a bridge setup on my Debian VM host
The most useful I found to be this:
https://linuxconfig.org/how-to-use-bridged-networking-with-libvirt-and-kvm
I have read a ...
1
vote
1answer
27 views
libvirt / KVM/QEMU - Networks: What does “Open Network” do?
When setting up a network with libvirt & virt-manager, there is an option to choose "Open Network" as the "Network Mode" when forwarding traffic to a physical network.
What ...
0
votes
1answer
45 views
VM with VLAN trunk on KVM
what exactly do I need to configure on Ubuntu18-based QEMU/KVM server to pass a trunk with >1 VLANs to a VM on it? (basically the equivalent of setting VLAN ID to 4095 on a port with ESXi) Some ...
0
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0answers
83 views
Can't connect to a remote host with virt-manager
I'm trying to connect from a laptop (computer1) to a host (remote1).
On computer1 I have user1 on the host I have a different user (user2).
Both systems are running Debian, the remote1 system is a ...
0
votes
1answer
6 views
Cannot connect to KVM virtual machine using VNC (connection hangs)
I have been able to connect to KVM virtual machine since creation using the following commands.
I create a SSH tunnel using ssh admin@10.0.1.2 -L 5903:127.0.0.1:5903 -N -T and then run open vnc://...
0
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0answers
82 views
How to emulate Windows 10 on a jetson nano with kvm : which kind of machine type should I use?
I would like to run a vm on my jetson nano,emulating windows 10 with qemu and kvm. As you probably already know,the jetson nano runs on arch64 / tegra platform. As first step I have recompiled the ...
0
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0answers
44 views
Arch enable hyper-v features
Got told on Server Fault to post this here.
I am running on arch, and want to enable the following hyperv-fearures:
vpindex
synic
stimer
reset
frequencies
But I am running into an issue, where virt-...
0
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0answers
21 views
Virtualization server - picking the hardware with multiple host adapter
We have decided to pick two servers (hardware) and dedicate them to kvm virtualization, replicating data from server A to server B using DRBD + LVM (every guest will store its virtual disk into its ...
0
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0answers
171 views
QEMU-KVM & CPU/RAM performance
On my brand new machine I have set up QEMU/KVM on Ubuntu 20.04 and I'm running multiple Linux guests without issues. What is causing me some headaches is to get the Windows 10 guest (for gaming) to ...
0
votes
1answer
55 views
How do I pin a process to a single CPU core?
I have a 2 core 2 thread cpu and I want to pin one core for a Windows 10 VM and keep the other for the Linux host.
1
vote
1answer
51 views
Why wont Windows 10 Pro shut down with the ACPI power button when screen is locked locally?
We have Windows 10 running under KVM but it won't shut down when it gets an ACPI power button request triggered by virsh shutdown win10 after a user locks the console---however, it will under the ...
0
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0answers
22 views
Is there any way to have my laptop run Windows 10 while having a KVM-Hypervisor under it?
Before I start, I should let you know that my knowledge I have gained so far consists of self-study, so I might not get the correct terminology.
I use Windows 10 for all of my productivity work, but I ...
0
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0answers
17 views
Running a KVM VM on VirtualBox under Windows?
Is is possible to move a KVM VM (Fedora 33) to VirtualBox on Windows 10?
0
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0answers
110 views
Cannot create kvm domain on alpine linux
After installing kvm on alpine following this blog, I cannot create a new virtual machine on alpine, facing 2 problems.
domain configuration does not support video model qxl
Unable to complete ...
0
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0answers
100 views
Oracle VirtualBox for Ubuntu detecting avx & avx2 for one CPU but not the other
I have been looking into this issue for days now. In short, Oracle VirtualBox started supporting avx & avx2 since version 5.0.3. Right now, it's on 6.1.16, so way ahead.
I had many problems ...
0
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0answers
14 views
I can't mount KVM Virtual Disk '.qcow2' from other Linux Live CD to chroot invalid argument
Hi I have Linux CentOS 7 I create it using Virt-Manger , I boot-up and Linux Distro Live CD Tiny-core 9 to experiment with Linux shell and distro modification chroot
I list detected V disks with fdisk ...
0
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0answers
13 views
iptables not filtering after applying rules to KVM based virtual machine
I am following this serverfault post as I want the guest Centos7 Virtual Machine to access the internet but have no access to any LAN network. My Host machine is Red Hat 7. Here is the output of ...
0
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0answers
28 views
How to add new mouse to KVM guest
Host computer is Red Hat Enterprise Linux Workstation 7.4 and virtual guest is Red Hat Enterprise Linux Client release 5.11.
This computer comes with a mouse and keyboard and works. However, when a ...
0
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0answers
630 views
Virsh error, Failed to connect socket to '/var/run/libvirt/libvirt-sock': No such file or directory
I am trying to setup KVM, but when running certain wirsh commands like:
$ sudo virsh net-define br10.xml or $ sudo virsh pool-define-as debian_pool dir - - - - "/home/$USER/VM"
I get this:
...
0
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0answers
15 views
Virtual machines resource allocation and management with KVM
I am looking for virtual machines allocation and management with KVM on a host bare metal server. For example, I can find the maximum number of VCPUs using the following command
virsh domcapabilities |...
0
votes
1answer
375 views
How do I import qcow2 VM images in ovirt via Admin Portal?
With oVirt node and engine VM installed, I've added my qcow2 image to the export domain (/nfs/export). I've tried in both the base dir of export domain, and also in the following (where /nfs/export/...
1
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0answers
136 views
QEMU/KVM - Getting “Error connecting to graphical console: Error opening Spice console SpiceClientGtk missing” when trying to create a VM
I am trying to create a virtual machine using QEMU/KVM. I am getting an error:
Error connecting to graphical console: Error opening Spice console SpiceClientGtk missing
I have looked around but ...
1
vote
0answers
14 views
What is the best method or procedure for backup an OS to Proxmox today? [closed]
What is the best method or procedure(or tools) for backup an OS to Proxmox today?
let's say about 100 virtual machines are used, for example, 25% are Linux, 25% are Windows, 25% Linux with Postgres, ...
0
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0answers
72 views
Unable to run 32bit VM Guests on Ubuntu 20.04
I have an old 17" MacBook Pro that's too old for modern macOS with an intel i7-2720QM CPU.
I've installed Ubuntu 20.04 on it, running Linux kernel 5.4.0-52-generic.
Try as I might I can't get ...
0
votes
1answer
40 views
Network link becomes dead when using bridge interface in Debian
I have a hypervisor (Kernel-based Virtual Machine) running Debian buster which I recently upgraded from Debian stretch. I use network bridging to share my internet connection (it has two Ethernet ...
0
votes
1answer
118 views
Why my VM is more slow after hardware upgrade?
Old Host centos 8 :
old cpu : AMD Ryzen 3 2200g Quad-core (4 Core, 4 Threads) 3.50 Ghz Processor
old ram : 2 x Corsair 8 GB Vengeance LPX DDR4 2400MHz
SATA 3 SSD
Guest : microsoft windows pro ( ...
0
votes
0answers
8 views
Running KVM on a Ubuntu 18.04 server with a bridged network
I have a KVM system running on an Ubuntu 18.04 server with the networking bridged to enable connectivity to the guests from the outside network. The problem I am running into is that the guests do not ...
0
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0answers
829 views
VM Installation - libvirt.libvirtError: internal error: qemu unexpectedly closed the monitor
when I try to create my VM in Manjaro, I am getting this error.
Unable to complete install: 'internal error: qemu unexpectedly closed the monitor: 2020-10-29T14:25:27.745918Z qemu-system-x86_64: ...
0
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0answers
287 views
Virt-Manager and iPhone USB redirection
I have a Mac virtual machine installed using QEMU/KVM and I can't redirect my phone to the virtual OS.
It keeps saying: spice-client-error-quark: Could not redirect ... at 1-13: Device is in use by ...
1
vote
3answers
837 views
Allow Windows KVM Guest to Access Kubuntu Host Filesystem
I am trying to get my Windows Qemu KVM to be able to access the host Kubuntu filesystem, so that I can work with files on Linux and Windows at the same time. I tried looking for various guides online, ...
0
votes
0answers
11 views
Connect with SSH to Linux KVM guest during installation
During installation of a KVM guest OS, it's possible to connect to the system console via VNC and interact with the installer system during some phases of installation for example using the shell.
For ...
0
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0answers
46 views
Running a single vm on hypervisor or kvm over a distributed clusture
I know somewhat about Beowulf cluster and linux virtual server. But I want to know if there exist a way to run an os on two or more nodes in cluster-unware mode. I mean the os will just seet the total ...
0
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0answers
477 views
getting Error message while trying to install KVM vm from terminal, host machine is ubuntu20.04
so in the past when i was installing vms in kvm, i was using kvm GUI, but now i want to install virtual machine from terminal, this is what i tried to do:
virt-install --network bridge:virbr0 --name ...
0
votes
1answer
33 views
Remote access to 20.04 locks window manager after a few minutes being idle
I have a ubunutu 20.04 VM running on a KVM server. The KVM server is on an updated ubuntu 20.04 system. The VM is basically an unmodified version that was just downloaded and updated. Added x2go so ...
0
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0answers
45 views
How do I correctly set up a headless virtual machine with kvm?
I am trying to install openSUSE virtual machines on a Celeron J3160-based host machine also running openSUSE. It has four NICs, of which I have bridged three - one for each guest VM.
Originally when ...
1
vote
0answers
997 views
QEMU/KVM: Creating file sharing between Linux host and MacOS guest
I would like to create whatever possible way to enable file sharing between my Ubuntu 20.04 host and a MacOS Mojave running QEMU/KVM.
Things I've tried:
anything related to virt-manager. Doesn't work ...
0
votes
1answer
2k views
QEMU: CPU topology doesn‘t match maximum vcpu count
Problem:
The definition of a created vm for use with virt-manager fails. Error message:
"error: Failed to define domain from macOS.xml
error: unsupported configuration: CPU topology doesn't ...
0
votes
1answer
377 views
How to get IPv6 for libvirt/kvm guests on laptop via both wired and wifi?
How can I get KVM/libvirt guests to have transparent, global IPv6 access on a laptop that switches interfaces between wired and wireless?
I have a /56 from my ISP, my unifi gateway gets that ...
4
votes
0answers
480 views
Installing Windows virtualization features within KVM virtual machine causes early-boot guest crash
See updates below for what I've discovered about the more general nature of this problem.
I have a Windows VM running OVMF firmware with VFIO passthrough for a graphics card running on an Arch Linux ...
0
votes
1answer
46 views
How to upgrade a Windows XP vm in KVM to Windows 7?
I have found plenty of information online for installing either Windows XP or Windows 7 [1] vm, but my Windows 7 license is only for upgrade, which requires that Windows XP already be installed.
Is ...
1
vote
1answer
175 views
Is KVM performance for Windows guests significantly worse then other hypervisors?
I use KVM extensively to run Linux VMs, and have occasionally used it to run Windows, but not heavily.
A new acquaintance who should know advised me that KVM performs really badly under Windows (with ...
0
votes
1answer
211 views
System interrupts/DPC/ISR appear to be causing sound distortion in Windows 10. How can I determine the root cause?
I am having problems with audio distortion in Windows 10, but it varies in severity between apps. Foobar2000 is very heavily distorted on most tracks, with buzzes and skips. Windows Media Player also ...
2
votes
1answer
1k views
How to boot a UEFI image from a KVM virtual machine without `virt-manager`? (e.g. Home Assistant on OpenMediaVault/Cockpit)
Background
I would like to run Home Assistant (HASS) in a virtual machine on OpenMediaVault 5. Up until OMV 4, this was easy because OMV (and the underlying Debian) supported VirtualBox and VB ...
0
votes
1answer
851 views
KVM/QEMU: Virt manager put automatically EPYC-IBPB cpu in cpu configuration
I have a problem with virt manager. When I tick "copy host configuration" or write host-passthrough" and I start the VM, the CPU model returns automatically to EPYC-IBPB CPU.
And if I ...
0
votes
1answer
82 views
Do CPU cores within VMs benefit from hardware-based encryption?
I am running Proxmox and some VMs on it. I want to set up an nginx proxy that would take care of SSL offloading for all of my services. I am wondering if running it on one of the VMs would mean there ...
1
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0answers
23 views
KVM Guest VM (ubuntu) cannot access internet
This might be common issue and I have tried many things and still no luck and looking help here. I have look similar issue here but none resolve, please advise. My kvm vm guest cannot access internet. ...
0
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0answers
62 views
Some devices not getting IP from DHCP after adding bridge to server for VMs
I have a server that serves my office and home. For office work I have just added some VMs (one for MySQL and one for WWW and PHP). The server has isc-dhcp-server providing IPs for most devices on the ...
