- 1 libvirt Wiki
- 2 General project documentation
- 3 Books
- 4 Configuration Management
- 5 convert
- 6 Guest Management
- 7 libguestfs / guestfish
- 8 Networking
- 9 Perl
- 10 Provisioning
- 11 Remote Management
- 12 Security
- 13 Storage
- 14 Third Party Libvirt Applications
- 15 Other
- 16 Getting started with Avocado-VT
- 17 Getting started with the Wiki
- 18 Getting started with libvirt development
- 19 Google Summer of Code
This is the libvirt Wiki for user contributed content.
Due to frequent attacks from spammers who are able to defeat the various anti-spam measures, it has become necessary to disable new account creation.
We still welcome contributions from anyone interested in updating content. Simply send an email to the main libvirt development list asking for an account and one will be created for you with as little delay as practical. Please tell us your preferred wiki user name in the email - if you have no preferences we will create one with "ForenameSurname" style.
General project documentation
- Libvirt FAQ
- Introductory guides to a variety of libvirt topics
- General hints and tips
- Troubleshooting Guide
- Libvirt Docs Team To Do list
- Outstanding feature To Do list
- Switching over from running standalone QEMU to libvirt managed QEMU
- Anatomy of the libvirt library (IBM developerworks)
- Areas to focus on testing
- Puppet-virt - Puppet Module for Virtualization Management
- Converting VMware guests to libvirt/KVM guests - Blog entry showing how to convert a VMware guest domain to a libvirt/KVM guest domain
- Guest (VM) Lifecycle : Read This First - Introduces the concepts used with guests / virtual machines. Includes things like persistent vs transient domains, creating, starting, stopping domains, saving, restoring, snapshots, and secure wiping of disk images.
- Guest CPU model configuration with QEMU/KVM
- Guest CPU affinity and NUMA placement on host with QEMU/KVM
KVM / QEMU
- What benefits does libvirt offer to developers targetting QEMU+KVM?
- Many introductory guides to libvirt with KVM
- Introduction to qemu guest agent
Guest device Configuration
Host SCSI device
libguestfs / guestfish
- Guestfish: generating inline commands from shell scripts - Blog entry showing how to generate inline guestfish commands from shell scripts
- libguestfs: Live CD inspection - Blog entry showing use of virt-inspector to tell what operating system is on a Live CD image
- Virtual Networking : Read This First - Introduces the concepts and ideas used in libvirts' networking for guests
Detailed networking pieces
- Host sFlow - Open source add-on for exporting sFlow data from guests
- IPtables / firewall usage in libvirt
- Libvirtd_and_dnsmasq - Additional configuration settings needed for running a global dnsmasq in addition to a libvirt controlled one
- Networking hints and tips
- Routed subnets with virtual networking
- Tip: Find the IP address of a virtual machine - Blog entry showing how to get the IP address of a guest domain
- OVS_and_PVLANS - Setup OpenvSwitch Flows to emulate PVLANs
-  - Setup automatic name translation for your domains
- Sys-Virt - Daniel Berrange's perl module for managing guests
- cucumber-vhost - Automatic provisioning with Cobbler and Cucumber
- Foreman - Automatic provisioning with Foreman and libvirt
Transport Layer Security (TLS)
- In depth guide to configuring TLS in libvirt (with many pictures)
- How to set up your VNC client software to use TLS
QCow2 disk encryption
Disk and Memory Snapshots
Examples of live block operations
- Live disk backup with active blockcommit
- Live merge an entire disk image chain including current active disk
Third Party Libvirt Applications
- Enomaly Elastic Computing Platform (ECP) - Cloud Computing / Infrastructure as a Service Platform based on Libvirt API
The images in this wiki, along with their Inkscape SVG source, are on this page in one place in case you'd like to use or modify them for your own project:
In case you want to turn on debuging in libvirt follow:
For other (partially automated) debugging techniques, check
Getting started with Avocado-VT
Avocado-VT (and Avocado) installation
- To use Avocado-VT with its libvirt backend, the following packages are required: libvirt, virt-install, qemu-kvm, p7zip, genisoimage. Other packages are also recommended: fakeroot, policycoreutils-python-utils.
When installing libvirt on Fedora, make sure you have the following packages installed: libvirt-client, libvirt-python, libvirt-daemon-kvm, and libvirt-daemon-config-network.
To help you with copy and paste, here is a command with the complete list of packages needed on a Fedora system:
dnf install libvirt virt-install qemu-kvm p7zip genisoimage libvirt-client libvirt-python libvirt-daemon-kvm libvirt-daemon-config-network fakeroot policycoreutils-python-utils
- Start libvirtd service.
On systems with systemd, run
systemctl start libvirtd.service
Now that all packages are installed and services have been started, it's time to bootstrap Avocado-VT test providers, configuration and default image files, by running:
avocado vt-bootstrap --vt-type=libvirt
For more information on the bootstrap process, please refer to the the Avocado-VT docs.
To get an idea of the available tests, run
avocado list --vt-type=libvirt
And look for the "VT" tests. To actually run some tests (all virsh.help tests), run
avocado run virsh.help --vt-type=libvirt
Testing self-built libvirt
To test self-built libvirt rather then the one installed in the system, either built a proper package and install it or follow the steps below.
- Configure libvirt to use the same paths as the system one.
- Compile libvirt.
- Change libvirtd service to start your local libvirtd using /path/to/libvirt/run /path/to/libvirt/daemon/.libs/libvirtd. On systems with systemd change ExecStart in /etc/systemd/system/multi-user.target.wants/libvirtd.service. This hack is required for some tests that restart libvirtd service.
- Run tests using the self-built libvirt:
/path/to/libvirt/run avocado run virsh.help virsh.console --vt-type libvirt
Getting started with the Wiki
This wiki is using the MediaWiki software. The following links will provide help on wiki syntax and other matters
Getting started with libvirt development
Here is the list of small tasks that should enable you to start digging into libvirt source code base
Google Summer of Code
There is a separate page dedicated to Google Summer of Code 2019. Also, the list for future ideas for projects can be found here Google Summer of Code Ideas. The previous years can be found here, here and here. There is also a separate page for FAQ.