arcbox-fs

High-performance filesystem service for ArcBox.

This crate implements VirtioFS-based file sharing between host and guest, providing near-native file I/O performance.

Key Features

• Zero-copy: Direct memory mapping when possible
• Parallel I/O: Concurrent request handling
• Intelligent caching: Host-side metadata and data caching
• FUSE protocol: Compatible with standard virtiofs drivers

Architecture

Guest: mount -t virtiofs arcbox /mnt/arcbox
                   │
                   ▼
┌─────────────────────────────────────────┐
│              arcbox-fs                   │
│  ┌─────────────────────────────────┐   │
│  │         FuseServer               │   │
│  │  - Request dispatch              │   │
│  │  - Reply handling                │   │
│  └─────────────────────────────────┘   │
│  ┌─────────────────────────────────┐   │
│  │        PassthroughFs             │   │
│  │  - Direct host filesystem access │   │
│  │  - File handle management        │   │
│  └─────────────────────────────────┘   │
└─────────────────────────────────────────┘