Metadata – Metadata Area

• Begins with a header:

  • Checksum of the header
  • Magic number (to assist recovery tools)
  • Version number: 1
  • Start byte of the header. For recovery tools. (e.g. It could be part of a loopback device in a filesystem inside another block device.)
  • Size of the metadata area
  • Offset, size and checksum of live metadata
  • Offset, size and checksum of uncommitted metadata

• Circular buffer containing the metadata.