The concept of a machine type represents the ABI or HW revision of the virtual hardware being used and presented to the guest. It is in general recommended to be upgraded on an upgrade of qemu/kvm, but so far there was no interface for that which was easy to use.
Such a change is picked up by a domain when it is (re-)started as the virtual HW can't be replaced at runtime.
Libvirt support various hipervisors and all have machine types. But a machine type in the sense that virt-machine-type cares about are only really present in a qemu/kvm based hipervisor.
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Snaps are applications packaged with all their dependencies to run on all popular Linux distributions from a single build. They update automatically and roll back gracefully.
Snaps are discoverable and installable from the Snap Store, an app store with an audience of millions.
If you’re running Ubuntu 16.04 LTS (Xenial Xerus) or later, including Ubuntu 18.04 LTS (Bionic Beaver) and Ubuntu 20.04 LTS (Focal Fossa), you don’t need to do anything. Snap is already installed and ready to go.
For versions of Ubuntu between 14.04 LTS (Trusty Tahr) and 15.10 (Wily Werewolf), as well as Ubuntu flavours that don’t include snap by default, snap can be installed from the Ubuntu Software Centre by searching for snapd.
Alternatively, snapd can be installed from the command line:
sudo apt update
sudo apt install snapd
Either log out and back in again, or restart your system, to ensure snap’s paths are updated correctly.
To install virt-machine-type, simply use the following command:
sudo snap install virt-machine-type --edge
Browse and find snaps from the convenience of your desktop using the snap store snap.
Interested to find out more about snaps? Want to publish your own application? Visit snapcraft.io now.
