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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Cannot share an NFS directory with a Fedora host on Vagrant/libvirt
I am running a Fedora machine with Vagrant over libvirt:
# -*- mode: ruby -*-
# vi: set ft=ruby :
# All Vagrant configuration is done below. The "2" in Vagrant.configure
# configures the ...
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1
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Create a VM from snapshot use /dev/VDA instead /dev/SDA
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We have an OpenStack instance configured with multiple images, including CentOS, Redhat, and Ubuntu. When creating a new instance, the root partition attaches as SCSI without any issues. All images ...
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1
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Libvirtd TCP port 16514 queries
I have a server that is running libvirtd. I just checked libvirtd ports and see below output. I wondered Why port 16514 PID is always 1 and why tcp6 is handling ipv4 with multi connections.
Can anyone ...
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windows 2019 unattended install on kvm via libvirt can't find licence error
I'm trying to install windows server 2019 with autounattend.xml configuration on kvm via libvirt.
Installation fail on dialog with sign: "Can't find microsoft software license terms"
Despite ...
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systemd: How to wait for a network device provided dynamicly at runtime?
We have a server (hypervisor) hosting many virtual machines controlled by libvirt. libvirt provides a virtual network for communication between the virtual machines and the hypervisor. This virtual ...
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3
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Afer upgrading qemu, "unsupported machine type 'pc-i440fx-3.1"
I recently installed the latest version (3.1.0) of QEMU, and I have been having trouble getting virt-manager to work correctly, presumably because it isn't connected to the right dependencies. Some of ...
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NATing through a vpn with libvirt
I installed a server with libvirt, and I've created a test VM. When I use the default network for it's interface, it gets a private IP and the NATing seems to work fine.
I installed OpenVPN, so I have ...
CommunityBot
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1
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Migrating from libvirt + iptables to libvirt + nftables
I'm about to migrate a Debian Stretch host using qemu-kvm to Debian Buster.
I've seen people complaining on the Internet about issues due to nftables becoming default in place of iptables and libvirt ...
CommunityBot
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AppArmor issues with Libvirt
I have a fresh Ubuntu Server 22.04.3 and Debian 12.1.0 installed and updated. Along with Cockpit and Cockpit virtual machines on both tests machines.
I am getting the following errors and warning when ...
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Apparmor and libvirt - warnings and errors
I have a fresh Debian 12 installed and updated. Along with Cockpit and Cockpit virtual machines.
I am getting the following errors and warning when looking at the log section in Cockpit:
Failed to ...
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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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Converting QEMU Solaris VM to libvirt
I have a QEMU VM running Solaris 2.6 on a SPARCstation-5 machine. I currently start it with the following command:
qemu-system-sparc \
-name sunvm \
-machine SS-5 \
-m 256 \
-drive file=sunvm.img,bus=...
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Why libvirt ignore secure boot flag?
In libvirt version 6.0.0
I have following configuration
<type arch="x86_64" machine="pc-q35-4.2">hvm</type>
<loader readonly="yes" secure="no" ...
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1
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OpenStack instances power off by itself
Already asked this over on ask.openstack.org but I figured it would get more views here too.
I am running OpenStack Mitaka on a 5 node cluster, 1 controller/network node and 4 compute nodes. I am able ...
CommunityBot
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virsh attach-device for serial device
I would like to add a serial device (console) to a guest via the virsh attach-device command.
I have a console.xml file containing:
<serial type="pty">
<target port="0"/>
</serial>...
CommunityBot
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LibVirt: PXE-boot over HTTPS?
The title summarizes it all. I have a VM solution that involves LibVirt, QEmu, and KVM. PXE-boot over HTTP works, but doesn't work on HTTPS. There are no firewall problems, I've checked that already.
...
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Access libvirt+KVM virtual machines with DNS
I have an Ubuntu Trusty machine running KVM + Libvirt to manage small virtual machines, and using the standard NetworkManager to connect to regular networks.
I want to be able to access the virtual ...
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2
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How to access service from virtual machine of another machine in local network?
I have two Ubuntu machines A and B in my local network.
Computer B has an openmediavault instance set up via KVM.
Computer B has the IP address 192.168.177.58, the openmediavault instance provides a ...
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Cannot establish an IPv4 connection from my bridge to an external node on the same network (IPv6 works tho)
I am currently trying to build a little lab for testing purposes:
I have a Linux Host-System (currently Arch-Based)deploying 2 vms, abridge with an assigned NIC and a CISCO Router that is directly ...
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3
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libvirt cannot create default network
I can't start the default network for libvirt. I get the error in journalctl:
Jun 06 15:22:43 jenia libvirtd[889326]: Unable to create bridge virbr0: Package not installed
I did installed the ...
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1
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iptables port forward not working with libvirtd VM
For some reason, I'm unable to connect to my server inside a VM from the outside world, but I can definitely connect to my server from the hypervisor. The server application runs on ports 27500 and ...
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Forwarding ports to guests in libvirt / KVM
How can I forward ports on a server running libvirt/KVM to specified ports on VM's, when using NAT?
For example, the host has a public IP of 1.2.3.4. I want to forward port 80 to 10.0.0.1 and port 22 ...
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How do I prevent libvirt from adding iptables rules for guest NAT networks?
Similar to this old request on BugZilla for Fedora 8, I'm hoping something has changed since then or someone knows another way.
I want to manage the iptables rules by hand—the one-size-fits-all ...
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Networking KVM virtual machines to VLAN interface on host
I have a VLAN interface (enp98s0f0.4000) set up on my KVM host, which is a Hetzner dedicated server. The VLAN is set up to route through a Hetzner vSwitch, and I can ping out to Cloud instances ...
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qemu process memory usage greater than guest memory usage
I have a physical machine with 24 GB RAM hosting a few VMs using libvirt-qemu.
When creating VMs, I assign a lot of memory and no swap, so that the total of assigned memory can be greater than the ...
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0
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network does not work for VM after a while, only resolves after changing MAC
I have installed pfSense as a KVM guest in a Debian 11 host using libvirt.
The host has two interfaces. One is attached to the VM using macVLAN driver, and serves as pfSense's WAN interface. The other ...
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Machine type issue when migrating KVM VMs with live snapshots from Debian to Ubuntu
I'm trying to migrate around 40 KVM VMs (containing a few hundred live snapshots mostly used for automated testing on Windows) from a Ubuntu 22 server to a Debian 11 server. The machine type of most ...
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Assign outlet IP for a libvirt VM using routed network
My host network interface has got two IPs. Currently, I'm running my VMs in a routed network.
Host's network interface is a member of public zone in firewalld, with both forward and masquerade enabled....
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How to make KVM guest configs persistent across reboots/shutdown
I create a KVM Guest VM (virsh define a.xml, virsh start a.xml). Guest uses pre-configured/pre-made QCOW2 disk image, which represents a virtual router (Arista vEOS). Host is Redhat 9.1. Guest is ...
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Connect (create ethernet link) between two VMs using their assigned SR-IOV Virtual Functions (VFs)
I have two KVM virtual machines created on RHEL9. I partitioned an SR-IOV-capable Physical NIC such that I was able to get Virtual NICs (Virtual Functions) from it. For each VM, I assigned it a VF.
...
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Why I can't save network changes with virsh?
I am trying to add fixed address to specific virtual host, therefor I closed virtual machine and used sudo virsh net-edit somenet. After adding line
<host mac='52:54:00:26:61:22' name='virt....
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How do I route ALL VM (qemu-kvm, libvirt) traffic through proxy running in Host?
Host: Ubuntu 20.04
Proxy Client and Server: V2ray
Proxy Client connecting to Server and is available in the host on 127.0.0.110808 for Socks and 127.0.0.1:10809 for http.
VMs: Multiple vms running ...
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2
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Strange issue with bridges on Ubuntu server and libvirt; looks like MAC address conflict
We have been using bridges and libvirt VMs for a long time (starting with Ubuntu 16.04). Recently, we have encountered a problem with bridges (on VLAns). We have not yet identified what conditions ...
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Can you use virsh to reset vm id sequence? [duplicate]
Question in regards to "Id" for running VMs, using virsh running local Qemu VMs.
command virsh list will bring up a list of the current running VMs defined, eg,
Id Name State
--------------...
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qemu set different dynamic ip address for each machine
I need to run about 7 virtual machines via qemu at the same time. The problem is that they all have the same public IP address as the host. Is there any way to give them different ip addresses? host ...
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new VM's won't complete after I moved /var/lib/libvirt/images to a larger disc
I have been building VM's on my fedora 37 server for a while, when I suddenly started running out of disc space. So, I looked in the filesystem and saw that the new VM's had their discs built at /var/...
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3
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Do not start guest after virt-install
I like to set up a new guest but do not want to start it immediately.
I use virt-install with these options:
virt-install \
--connect qemu:///system \
--import \
--virt-type kvm \
--...
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answers
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On system startup, libvirtd fails with "Network is already in use" error
I'm configuring a new system to host VMs with libvirtd (AlmaLinux 8.9, 4.18.0-425.13.1.el8; libvirt 8.0.0-10.2) and I'm seeing a weird behavior when I reboot the system.
On boot, libvirtd fails to ...
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3
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Create iPXE UEFI bootable image for QEMU/Libvirt with custom next-server and filename
I can create a VM with libvirt/qemu to boot in UEFI mode. I know that it does iPXE by default, but I want to create/modify a iPXE image in order to override filename and next-server properties.
How ...
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How to use more then 2GB of ram when using running a nested BIOS VM using KVM
I have a Linux host running Debian 11 and on that host, I have a Ubuntu 22.04 VM. Inside that VM I want to run a Windows 10 VM using nested virtualization. The ubuntu VM is booted using EFI and nested ...
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Occasional packet loss between bridge interfaces
I have two virtualization servers based on libvirt and KVM. And sometimes I see packages get lost on one particular virtual machine. After restarting the virtualization host this problem is solved, ...
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1
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228
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Forcing static IP on libvirt
I've seen this question and others online, yet my problem persists.
I have a gentoo host with the following interface:
virbr0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet ...
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2
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628
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libvirt/qemu VM freezes when migrating between specific hosts
I have several servers (different ages) running on Ubuntu 22.04 with QEMU and libvirt.
When migrating VMs between some of these servers, the VM immediately freezes on the target system.
Tested guests ...
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84
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Virtualized Centos 7 on Ubuntu host: very slow I/O
I run a Centos 7 virtualized in Ubuntu 20.04. There is a huge I/O performance drop in the VM compared to the host. The host has plenty of RAM.
Host:
* MB/s = 1,000,000 bytes/s
* KB = 1000 bytes, KiB = ...
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How to create a shared Disk with the image stored on Host in KVM?
I am currently trying to setup a disk, using the raw img format on the host, which is then shared between multiple guest VMs (which are running Alpine Linux), using the libvirt / KVM virtualization ...
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Backing encrypted drive
Creating a backing image for the master image that is encrypted using LUKS:
qemu-img create -f qcow2 -b dev.qcow2 -F qcow2 -o encrypt.format=luks,encrypt.key-secret=dev --object secret,id=dev,data='...
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How to auto redirect a usb device on virt-manager
How do I automatically redirect a USB device to a remote KVM? preferrably filtered by ID.
I have a KVM running on a server (QEMU+SSH), and the display protocol is Spice. How could I always redirect a ...
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1
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Understanding Current/Maximum allocation of VirtManager (LibVirt)
When I first saw the UI in VirtManager, I thought "Maximum" is the amount of ram that appears to the guest, and "Current" is the reserved RAM when the VM starts. I thought that ...
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162
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libvirt virsh not using a predefined target while attaching interface
I am trying to automate the process of creating a Guest VM. I am using uvt-kvm to create the VM. I am also taking a network type as a parameter. This can be either nat or macvtap.
Now in the script I ...
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How do I force Virt-Manager to use the hosts' llvmpipe renderer so the guests get to use 3D acceleration?
I'm using virt-manager and set "3D Acceleration" as per what was recommended, but I'm getting this error:
qemu_gl_create_compile_shader: compile vertex error 0:2(10): error: GLSL ES 3.00 is ...
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