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Crimson developer documentation

Contents

• crimson
  • Building Crimson
  • Deploying Crimson with cephadm
  • Crimson CPU allocation
  • Running Crimson
  • Object Store Backends
    • Native Backends
    • Non-Native Backends
  • vstart.sh
    • daemonize
    • logging
    • PG stats reported to mgr
    • Asock command
    • Prometheus text protocol
  • Profiling Crimson
    • Fio
    • CBT
  • Hacking Crimson
    • Seastar Documents
  • Debugging Crimson
    • Debugging with GDB
    • Human-readable backtraces with addr2line
  • Code Walkthroughs
• error handling
• osd
• The ClientRequest pipeline
  • Comparison with the classical OSD
• PoseidonStore
  • Key concepts and goals
    • Background
    • Motivation and Key idea
    • Observation
  • Design
    • I/O procedure
    • Crash consistency
    • Comparison
  • Detailed Design
    • WAL
    • Partition and Reactor thread
    • Cache
    • Sharded partitions (with cross-SP transaction)
    • CoW/Clone
  • Plans

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