Module rootfs 

Guest rootfs management module.

This module handles preparation and management of guest rootfs for MicroVM instances. The rootfs contains the minimal filesystem required to boot the guest agent.

Two rootfs providers are available:

• CopyProvider — full recursive copy (works everywhere)
• OverlayProvider — Linux overlayfs mount (near-instant CoW)

Structs

CopyProvider

Full recursive copy provider — works on all platforms.

GuestLayout

Guest filesystem layout.

OverlayProvider

Overlayfs provider — near-instant CoW mounts (Linux only).

RootfsBuilder

Builder for creating guest rootfs.

Constants

GUEST_WORKDIR

Working directory inside the guest VM.

Traits

RootfsProvider

Abstracts how a rootfs directory is prepared for a box from a cached lower layer.

Functions

default_provider

Auto-detect the best available rootfs provider for the current platform.

unmount_box_overlay

Unmount a box’s overlayfs merged view — best-effort and idempotent.