QEMU System Emulation Management and Interoperability Guide — QEMU 4.0.0 documentation

# QEMU System Emulation Management and Interoperability Guide

This manual contains documents and specifications that are useful for making QEMU interoperate with other software.

Contents:

- Dirty Bitmaps and Incremental Backup
  - Dirty Bitmap Names
  - Bitmap Modes
  - Basic QMP Usage
  - Transactions
  - Incremental Backups
  - Errors
- Live Block Device Operations
  - Disk image backing chain notation
  - Brief overview of live block QMP primitives
  - Interacting with a QEMU instance
  - Example disk image chain
  - A note on points-in-time vs file names
  - Live block streaming — `block-stream`
  - Live block commit — `block-commit`
  - Live disk synchronization — `drive-mirror` and `blockdev-mirror`
  - Live disk backup — `drive-backup` and `blockdev-backup`
- Persistent reservation helper protocol
  - Connection and initialization
  - Command format