Storage Media Output Format

This document describes the media format written by the Storage daemon. The Storage daemon reads and writes in units of blocks. Blocks contain records. Each block has a block header followed by records, and each record has a record header followed by record data.

This chapter is intended to be a technical discussion of the Media Format and as such is not targeted at end users but rather at developers and system administrators that want or need to know more of the working details of Bacula.

• Definitions
• Storage Daemon File Output Format
• Overall Format
• Serialization
• Block Header
• Record Header
• Version BB02 Block Header
• Version 2 Record Header
• Volume Label Format
• Session Label
• Overall Storage Format
• Unix File Attributes
• Old Depreciated Tape Format

Possible Next Steps

Go to Bacula Porting Notes.

Go back to Developer Guide.