Questions tagged [kvm]
KVM is the Kernel Virtual Machine, a virtualization hypervisor built into the Linux kernel.
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QEMU/KVM connection drops immediately after starting up virtual machine with GPU passthrough
I have a Windows 10 virtual machine with GPU passthrough in Virt-Manager. Recently it has suddenly started to crash the QEMU/KVM connection it is connected to, as in spontaneously disconnecting. Is ...
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Is my characterisation of KVM and QEMU accurate?
I usually write essays on topics I am studying to help my understanding. Below are excerpts from my study of Virtualisation. I would like comments from real professionals on their accuracy.
KVM is ...
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Remounting an overlayfs on underlying filesystem failure
I have quite a bit complex setup.
I'm running https://github.com/demostanis/demolinux. The root filesystem is made out of an overlayfs between a btrfs read-only subvolume and a read-write btrfs ...
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Logitech TrackMan Marble Mouse Back Button
Background
A Logitech TrackMan was configured to have its small right button trigger the back functionality in Firefox. Here's an image of the device from the Ubuntu Community wiki:
The keyboard and ...
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Why I see different cpu-migrations from top and perf stat?
New to system performance analyze.
I am curious on how CPU affinity affect kvm virtual machine.
So I try to bind vm's vcpu to physical cpu to improve vm's performance.
find the pid of the vm(ecs-...
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Debian 12 Cloud Image Deployment Issue - Growpart can not find grep and other basic utilities
I created a tutorial quite a while ago for easily deploying Debian 12 from the provided qcow2 images that are provided here: https://cloud.debian.org/images/cloud/bookworm/latest/. Unfortunately, I ...
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How can I create a VM in virt-manager that can access the internet through the host but can't even see the host or other devices on the LAN?
I want to be able to create multiple VMs for testing purposes -- questionable websites, files that could be infected with a virus, etc.
I want to make sure these VMs should be able to access the ...
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Trouble building KVM from source for Ubuntu 22.04. section size must match the kernel's
I'm trying to build KVM and I'm having trouble figuring out where I went wrong. It builds fine, I'm 99% sure I'm cloning the correct kernel tag in git, but it doesn't load.
I'm running Ubuntu 22.04, ...
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Not able to get Windows 11 VM working on KVM with intel 13900k
This is my first time posting here in hopes I can find an answer to an issue I have been experiencing with trying to get my Windows 11 VM running on KVM with my new Intel 13900KS. To be specific, this ...
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Rocky Linux Emergency Mode in KVMachine does not start
I have "inherited" a virtual server at German hoster STRATO with Rocky Linux 8, but no root password. I wanted to change this as usual, so in grub I entered
rd.break enforcing=0
Enter rd....
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KVM: Recover console of VM which connected to console of another VM
How do I recover the console of the first guest when itself is connected to a guest of which it is the host?
Host1:~$ virsh console Guest1
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Connected to domain 'Guest1'
Escape character is ^] (...
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Ubuntu Cloud Image terminal display resolution
I've been testing out the Cloud Image variants of Ubuntu Server on a Proxmox VE, but I encounter one issue with the NoVNC console - the resolution seems to be something like 640x480 which is very ...
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KVM/libvirt VMs layer 2 looks good but layer 3 isn't working
This looks like it's similar to this question but my setup (kvm/libvirt) looks closer to the answer than the question.
Host is running Debian 12 (bookworm) and is up-to-date with upgrades, nothing ...
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GPU passthrough (single GPU machine)
I am interested in a use case where I have a PC running KVM, and I want to map the host's VGA/DVI output to a guest machine. The host machine will not have 2x video cards. The net effect is that, ...
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KVM breaks my host's Internet connection
When the host first boots, route says:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
default 192.168.0.1 0.0.0.0 UG 0 ...
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