Questions tagged [libvirt]
libvirt is an API and toolkit for developing applications which manage virtual machine hypervisors, the virtual machines running under them, and virtual machine storage.
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check a vps guest memory usage and CPU usage
I have vps guests that are managed by KVM and libvirt. Using virt-df, I am able to check the real disk usage of each vps guest.
#virt-df [--options] -d domname
Is there a similar utility tool to ...
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libvirt and network filtering with nat - iptables overrides
At first, I want to say: I know, it was done initially wrong and I want to avoid doing everything again from the scratch because of general downtime.
I am running libvirt/KVM on RHEL. I've got VM ...
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Not able to start virtual machine/domain in KVM: Failed to get "write" lock
After host's restart, I'm not able to start virtual machine:
user@server-1:~$ virsh start docker-1
error: Failed to start domain docker-1
error: internal error: process exited while connecting to ...
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KVM hosts to be accessible from outside world for server purpose In centos 7
Today i just ran into a problem i just wanted to ask a question to all of you
I have just install kvm in my system and i have some how managed to get a node installed and working in the system Now ...
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Assign ethernet alias to KVM guest
I have a pool of IP addresses and a single ethernet cable. I have set aliases:
auto enp2s0:0
iface enp2s0:0 inet static
address x.x.x.x
netmask x.x.x.x
I want to dedicate some of the aliases to ...
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Limiting access to one libvirt domain via polkit (older .pksa format)
I have a hypervisor running libvirt on a Ubuntu 18.04 system. I need to configure access so that user 'joe' can only manage one domain.
Recently, policykit moved from the .pksa configuration files ...
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libvirt: difference in exposing LVM logical volumes VS libvirt storage pools
I started learning how to create a good virtualization stack with libvirt. I have created a LVM Volume Group that exposes a device block made of a Linux RAID. My idea is to give a Logical Volume to ...
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Switching back to libxl from xend without rebooting
I did something dumb: I enabled xend over libxl and started an instance with xend.
Now, libxl won't start any instances, even though I got rid of all the xend instances and stopped xend:
root@xen1 [~...
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Why can't I shutdown running kvm instance?
I have running kvm instance:
=# virsh list --all
Id Name State
----------------------------------------------------
2 debian-test running
When I ...
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Prevent hijacking IPs in a bridged network (KVM/libvirt)
Is there a solution to prevent a VM user assign/use IP addresses he doesn't own but are routed over the same bridge like his own addresses? The current setup looks like this with libvirt and KVM:
...
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Libvirt / QEmu Machine Fails and Refuses Restart Because of Memory Allocation Errors
I'm having a problem with libvirt. On a system restart all virtual machines (VMs) are started without a problem and keep running. Then at some point in time a set of machines shuts down according to ...
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NAT via iptables and virtual interface
I'm trying to implement the following scenario:
One VM-host, multiple guest VMs, each one gets its own IP-address (and domain).
Our server has only one physical interface, so the intended use is to ...
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Libvirtd start error
I had to remove libvirt manually using kill. Now when I'm trying to start libvirtd it says error: Unable to initialize network sockets. Check /var/log/messages or run without --daemon for more info.
...
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KVM and libvirt: How to configure a new disc device to an existing VM?
I've got an Ubuntu 9.04 server running two VM's. In /etc/libvirt/qemu/machine1.xml two disk devices are defined like this:
<devices>
<emulator>/usr/bin/kvm</emulator>
<disk ...
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Raw LVM disk write is four times faster on host than inside KVM guest?
I've got a Debian 10.6 Host, with a Debian 10.6 guest. KVM/Qemu/libvirt. The host has a software RAID 10 array with 6 mechanical disks. LVM is on top of the RAID array. One LV is passed into the guest ...
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Migrate windows guests from VirtualBox to KVM without re-activation?
The windows check the hardwareuuid of virtualbox VM for activation. Is there a way to use same UUID in KVM to prevent the reactivation?
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virsh: failed to connect to hypervisor as user
I'm currently running a RHEL 7.7 operating system.
I was trying to setup minkube environment using kvm2 driver, so what happens is that minikube starts pretty, but with some errors during the ...
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Possible to create libvirt network as non-root?
My end goal is to be able to use libvirt.uri = 'qemu:///session' with Vagrant, which means creating machines as non-root, but in order to do that I need to have a default libvirt network as non-root, ...
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KVM/QEMU: Windows Guest (WindowsServer) add new drive with attach disk SSD
I would like to add a new drive to my Windows Guest (Windows Server 2016). Let's say D:
I can not use network share(SAMBA,etc...). It is why I am trying to add new storage device.
add in myVM.xml
...
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How I increase GPU video RAM in virt-manager?
I have this text in my XML
<video>
<model type='qxl' ram='65536' vram='65536' vgamem='16384' heads='1' primary='yes'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' ...
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Using virt-builder to create image
I'm trying to automatically create cloud images using virt-builder.
I am using the following command in Centos 7 and it keeps failing. Any idea behind the issue ?
# virt-builder debian-9 -o /var/lib/...
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Why doesn't libvirt "Usermode Networking" start on boot?
Running Ubuntu 16.04, the default virbr0 interface is not started by default for me on boot, meaning I have to start it manually using the command,
$ sudo virsh net-start default
Not a big deal ...
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Is there anyway to do a live qcow2 backup without pausing vm's?
I'm trying to setup a KVM backup solution for our servers that would take live backups without stopping the system.
I Found several ready scripts which i have tested, but they all either stop or "...
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Libvirt: one NIC, multiple VM, all with Bridged mode
I have a question, is it possible to add one host NIC to multiple Virtual machines in libvirt with both of them using it as bridged mode. I've ran out of NIC-s and I still have 2 VM-s who need bridged ...
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Error when adding network interface to VM on KVM host using virsh
I'm attempting to script adding a network interface to a centos 6 guest. I know the interface can be set up using the virt-manager gui but it's highly desirable for it to be added as part of an ...
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Foreman: How to test if the deployment is on Bare Matal or in Libvirt?
I write a custom Kickstart as a Foreman provisioning template.
One of my problems is that I haven't found a way to determine if the new host will be installed on a bare metal or on a Hypervisor.
The @...
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Libvirt with Xen fails to start correctly Ubuntu 14.04
At the moment i'M really feeling a little helpless:
I tried to setup Ubuntu 14.04 with Xen and libvirt for management.
I created a VM but I did not auto-start (altough autostart is checked).
If I do ...
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Is there any way to lock/unlock a Hosted Engine in oVirt?
I have a weird situation with my Hosted Engine in oVirt.
We have an oVirt cluster set up using gluster as the storage for the engines isos and all the information. About a week ago two of the three ...
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Revert libvirt external snapshot
Having some issues understanding how to revert snapshots on ubuntu 14.04 using KVM...
Until now i have been using internal snapshots, however due to space issues (space not being re-allocated after ...
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routing a second public IP to multiple VM's
myself and a friend have rented a dedicated server and have used KVM and libvirt to create virtual machines for us to use. (we are using debian jessie on the host)
we purchased two additional IP ...
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How do I configure bridged networking for VMs
I'm setting up a KVM virtualization server in CentOS 6. How do I configure bridged networking? (I think I need network interface eth0 to be accessible to VMs)
I have tried to follow this guide:
How ...
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Changing the mac address in a libvirt xml config file breaks network connectivity for the guest
I'm using Xen with libvirt and trying to set it up on a bridged interface. I am able to install an OS and everything works as I would expect. If I save the xml output from "virsh dumpxml guest", edit ...
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KVM/libvirt host has vnet for each guest?
Totally new to KVM here, so maybe there is nothing wrong with my set up, but I am running 10 guest VMs on my Ubuntu 12.04 server via KVM and I just noticed that ifconfig returned a plethora of ...
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KVM hypervisor remote access without libvirt
I am a newbie in the area of Linux KVM virtualization. Can anybody help how to connect to my KVM hypervisor from a remote Linux machine without using LibVirt or any other third party library. I have ...
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CentOS libvirt reboot
I've noticed the following status message after system update (on SL 6.1 - yum update):
# /etc/init.d/libvirtd status
libvirtd dead but pid file exists
one of the updated packages was "libvirt". Is ...
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Can't connect to remote Xen libvirt with ssh, using virsh or virt-manager
I'm running Xen 4 on a Debian server running Squeeze (stable). I want to connect remotely over ssh using virt-manager or virsh, because I can do that on a Lenny server (oldstable).
Xen is installed ...
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Unable to connect Xend with virt-manager
I have installed debian 6.0.1a. I have install all XEN stuff. including xen kernel, libvirtd, ... but when i want to connect xend, virt-manager shows me this:
Verify that:
A Xen host kernel was ...
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Libvirt - UDP not working between host and VM
Host: 192.168.1.144/24
VMs(routed) network: 192.168.122.0/24
I have VMs connected to libvirt's routed network.
<network>
<name>routed-122</name>
<uuid>86ca64a6-7fea-4cf8-...
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How can the SPICE password of a libvirt+kvm+qemu virtual machine be changed while the machine is running?
I have a virtual machine that is running on a KVM+QEMU stack with libvirt. The VM is using a qxl or virtio display and has a spice graphics listening on a port.
I'd like to change the password (in ...
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Bind/Unbind PCI device on the Ubuntu host
I have to NIC devices on the host:
# list Ethernet PCI devices to find out names
lspci -nn | grep Ethernet
# 04:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI ...
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Why is my docker registry refusing connections from VMs in my local network but not the host?
For context - I am attempting to deploy OKD in an air-gapped environment, which requires mirroring an image registry. This private, secured registry is then pulled from by other machines in the ...
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libvirt Windows 10 VM issue
I am running Manjaro KDE and I have managed to setup a Windows 10 VM with GPU passthrough for Windows things and it was working great until I noticed a weird behavior. When I try to reboot the VM, or ...
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How to reduce KVM qcow2 disk size?
When I boot in my guest Debian it says it size is 2.7G.
df -h
Filesystem Size Used Avail Use% Mounted on
udev 718M 0 718M 0% /dev
tmpfs 147M 6.2M 141M 5% /run
/...
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libvirt uses ipv6, ipv6 disabled on host
This question was the same I have found to my issue. It has no answer.
I am running vagrant on my Ubuntu and have ipv6 disabled.
When I create an image with vagrant, libvirt returns:
Error while ...
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Where are the OS specific properties located used by virt-install --os-variant
Using
virt-install ... --os-variant win10 ...
virt-install create a new VM optimized for Windows 10.
But where are those OS specific properties located?
E.g. machine-type and the <hyperv> ...
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problems with bridge-networking libvirt on centos 8
I am running a centos 8 as virt-host with libvirt an kvm/qemu. Networking is set to bridge-mode with virbr0.
Suddenly and over-night this stops working:
The clients don't connect anymore, and if I try ...
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libvirt & openvswitch VLAN tagging on the fly
I'm working on a project using libvirt with qemu and openvswitch on Debian 10.
I would like to be able to modify the configuration of a network card of a domain in bash with the update-device command ...
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Libvirt and macvtap issue on Arch Linux [closed]
I'm using Arch Linux (up to date) with QEMU-KVM, libvirt and virt-manager as a front. I have several VMs, but only one running at a time so far. The VM I'm trying to get to work is on Debian 10, but I ...
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How do I boot the Debian 10 image with qemu/kvm?
I'm attempting to boot the openstack image of Debian 10 using qemu and encountering an error detecting the harddrive, the end of the boot up sequence is showing:
[ 0.989085] Run /init as init ...
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encrypted qemu virtual machines do not start after upgrade to buster: permission denied
I'm running an encrypted qemu virtual machine on a debian host with libvirt.
To setup the machine, I took the following steps:
Place the encryption key in a file $secretfile placed in /etc/libvirt/...
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