arcbox-virtio-blk 0.4.9

VirtIO block device (virtio-blk).

Implements the VirtIO block device specification for disk I/O.

Supports:

• Synchronous I/O with standard file operations
• Asynchronous I/O with tokio
• Direct I/O (O_DIRECT) for bypassing OS cache
• Memory-mapped I/O for zero-copy operations

Module layout

• backend: AsyncBlockBackend trait
• mmap: memory-mapped backend (zero-copy)
• direct_io: O_DIRECT backend (Linux only)
• request: wire types — config, header, status, request type
• device: VirtioBlock device + VirtioDevice impl