All Questions
33
questions
32
votes
3
answers
73k
views
libvirt: "Failed to initialize a valid firewall backend"
I'm trying to set up a virtual NAT network device without DHCP for libvirt on an Arch Linux host.
What I have tried:
# virsh net-define network.xml
Network default defined from network.xml
[...
- 429
27
votes
1
answer
18k
views
What is the difference and relationship between kvm, virt-manager, qemu and libvirt?
I investigated this topic and here are my conclusions (But I still have questions. And please correct me if I made any mistake in my conclusions):
VMWare:
VMWare developed its VM Hypervisor SW in 1999,...
- 373
4
votes
2
answers
7k
views
Unable to resume KVM guest after rebooting host
I'm running KVM on Linux Mint 17.1, kernel 3.16.0-31-generic. The only guest is a Windows 8.1 VM. I've noticed that if I reboot the host while the guest is running, I'm unable to resume the guest ...
- 812
4
votes
1
answer
3k
views
Can I get more screen resolution options for a QEMU virtualized Windows using a VirtIO graphics card?
When virtualizing e.g. a Windows 10 installation with QEMU and using the default graphics card (with no command line option set), it shows up as a "Microsoft Basic Display Adapter", and one ...
- 165
3
votes
1
answer
6k
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 ...
3
votes
1
answer
1k
views
QEMU: How to find bottleneck in my virtual machine?
I am running an ubuntu virtual-machine on a 12.04 ubuntu server. Unfortunately the machine is extremly slow (just htop consumes 15%), even though having 8 cores etc.
Do you know a way to find the ...
- 135
3
votes
0
answers
4k
views
Virsh doesn't list virtual machines
On arch, I set up a number of VMs using virt-manager. My user is part of the libvirt group, and I can access virsh, but virsh list without root access doesn't list the VMs I created:
$ virsh list --...
- 1,472
3
votes
2
answers
818
views
Possible to move a guest OS on VirtManager (Linux) to Windows?
For VirtualBox or VMware Workstation,one could copy the guest OS data directory to another computer and run it there. For example, I could create a guest OS on Linux, and then copy the guest data ...
- 3,994
2
votes
1
answer
3k
views
How to(Libvirt) attach floppy image device to guest VM?
Say, I have floppy.vfd image.
How should I fill my xml file in order to attach floppy image?
I have template like
<disk type='*' device='*'>
<device name='*' type='*'/>
<...
anon
2
votes
2
answers
4k
views
Qemu: Is it possible to have BOTH the virtual display and VGA passthrough in a Windows guest?
This guy implies that it's possible to have both the virtual display and a VGA passthrough display device active at the same time..
I've tried this, both with libvirt and with the qemu commandline. ...
- 300
2
votes
1
answer
3k
views
How do i update available versions for operating system types in virt-manager
How do i update available versions for operating system types in virt-manager?
For example for Ubuntu, only up to Ubuntu 14.04 LTS is in the menu but I'm installing Ubuntu 16.04 LTS. Installation ...
- 402
2
votes
1
answer
8k
views
virt-manager - spice-guest-tools not working on Windows 10 guest
Host: Debian Bullseye
Guest: Windows 10 20H2
Hypervisor Details:
Hypervisor: KVM
Architecture: x86_64
Emulator: /usr/bin/qemu-system-x86_64
Chipset: Q35
Firmware: BIOS
Windows in the VM is running ...
2
votes
0
answers
759
views
libvirt and hotswappable single USB port with virt-manager - almost there?
Description
USB not visible on Debian guest. I cannot see anything obvious from the logs but because I do not have much virtualisation experience I assume I missed a step in the configuration, ...
1
vote
1
answer
4k
views
Unable to load Nvidia drivers in QEMU virtual machine
I have an Ubuntu Server 20.04 LTS on an Alienware Aurora R6 (i7-7700 CPU with a Nvidia GTX 1080). I am relatively new to type-1 hypervisor and have some experience with type-2 (VirtualBox).
On the ...
- 735
1
vote
1
answer
3k
views
Can't boot VirtualBox vdi virtual machine image converted to raw image in QEMU/KVM: not a bootable disk
I have a .vdi VM image created with VirtualBox and converted it to raw and qcow2 images like this:
VBoxManage clonehd --format RAW ./vm.vdi ./vm.img
qemu-img convert -f raw ./vm.img -O qcow2 ./vm....
- 344