feat: Implementation of dynamic USB device allocation in a cluster using the Kubernetes DRA mechanism.

[yaroslavborbat]

Description

Implementation of dynamic USB device allocation in a cluster using the Kubernetes DRA mechanism.

How It Works

Udev monitor – a component that monitors USB devices in the system via udev. When a device is connected or disconnected, it receives events and updates the list of available resources.

Workflow chain:

1. Monitoring – the udev monitor subscribes to add/remove events for USB devices.
2. Resource Registration – detected devices are registered as allocatable resources on the node.
3. Allocation – when a pod is created with a request for a USB device via DRA, the driver allocates the requested device to the pod.
4. Release – after the pod is deleted, the device is returned to the available pool.

As a result, USB devices become dynamic resources: they do not need to be statically reserved in advance and are automatically accounted for when they appear or disappear in the system.

Support in Kubevirt

deckhouse/3p-kubevirt#49

Checklist

• The code is covered by unit tests.
• e2e tests passed.
• Documentation updated according to the changes.
• Changes were tested in the Kubernetes cluster manually.

Changelog entries

section: vm
type: feature
summary: Implementation of dynamic USB device allocation in a cluster using the Kubernetes DRA mechanism.