Migration

This is the main entry for QEMU migration documentations. It explains how QEMU live migration works.

• Migration framework
  • Transports
  • Common infrastructure
  • Saving the state of one device
  • Stream structure
• Migration features
  • Postcopy
  • Dirty limit
  • VFIO device migration
  • Virtio device migration
  • Mapped-ram
  • CheckPoint and Restart (CPR)
  • QPL Compression
  • User Space Accelerator Development Kit (UADK) Compression
• Backwards compatibility
  • How backwards compatibility works
  • A device with different features on both sides
  • How to mitigate when we have a backward compatibility error
• Best practices
  • Debugging
  • Firmware