All Questions
375
questions
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9
views
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 ...
- 1
0
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29
views
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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votes
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answers
28
views
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-...
- 1
0
votes
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answers
21
views
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 ...
- 431
0
votes
1
answer
24
views
libvirt can't bind device to runtime due to permission denied
I'm trying to start a new domain via libvirt virsh start my-domain.
But it fails with this permission denied error
error: internal error: Process exited prior to exec: libvirt: error : Failed to bind ...
- 101
1
vote
0
answers
203
views
Libvirt iptable chain LIBVIRT_FWX has no effect on interface internal traffic
I created a libvirt network in open mode and added the iptable rules that would have been created for a nat mode network. My plan is to basically create a nat network but add some custom iptable rules ...
- 11
0
votes
1
answer
167
views
Is it possibel to enable X86 PMU in QEMU emulation mode (without KVM)?
I am trying to run perf in my Linux system, but WSL2 and virtual-box 6.1 do NOT detect the hardware PMU in system.
So, I installed qemu-system-x86_64 in Linux VM, and tried to run QEMU in emulation ...
- 443
0
votes
0
answers
104
views
Booting Existing Linux Installation in qemu VM
There are 2 separate arch installations on my machine, one on an nvme drive and another on /dev/sda (EFI in /dev/sda1 and root in /dev/sda2). Trying to boot the arch on /dev/sda from inside the arch ...
- 101
0
votes
1
answer
486
views
Starting QEMU as another user
I'm currently trying to intercept/block specific requests from the guest in QEMU.
According to this question, it seems that the easiest way to do so is to run QEMU as a different user, so that I can ...
- 3
0
votes
0
answers
220
views
KVM Qemu + Libvirt -> Debian Host+Guest => OpenGL / 3D Acceleration -> No Effect
Hi I use debian12 with KVM+Qemu and libvirt ( VirtManager as a GUI ) to create my virtual Machines.
I want to have several Virtual machines that have "some" GPU Acceleration
NO Direct GPU ...
- 160
1
vote
0
answers
103
views
Running VMs and virsh command from qemu build from source
I am trying to build QEMU from source using the instructions given here. I am trying to implement a research paper which adds features to the migration mechanism of QEMU and so I need a custom build(...
- 11
0
votes
0
answers
40
views
Does it make sense to run mcelog inside of a kvm vm?
I would imagine it would catch qemu / kvm / libvirt bugs, and probably nothing related to the actual hardware. Running mcelog on the host of course, but is it worth it/helpful to run it inside a kvm ...
- 487
6
votes
1
answer
214
views
Is there a way to determine what process is rebooting a server?
I have a kvm vm that seems to be rebooting randomly. I'm not seeing anything in syslog about reboot, shutdown, error, core dump, panic, etc. No errors in libvirtd log on the host either, no errors in ...
- 487
2
votes
2
answers
401
views
How to start docker container X86 on Rasberry PI 4 with arm64 architecture?
I have Raspberry PI 4 with 8 GB memory.
And I have x86 container. It is working on x86/amd64 servers correctly.
I would like to port it to raspberry. It has ubuntu 22 released from Raspberry team.
I ...
0
votes
0
answers
36
views
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 ...
- 1