Specialist Part: RADOS, RBD and RGW

The nine chapters of this part examine the three main Ceph subsystems in depth: RADOS (the object model and the op path in the OSD, peering and the pg log, snapshots and clones), RBD (the image layout in RADOS, the I/O path in librbd and krbd, and rbd-mirror) and RGW (data and index layout, the request path, and multisite internals). Earlier chapters introduce each topic; this part checks data structures, algorithms and commands against the main branch and does not repeat those introductions.

1. 34Specialist Part (1): RADOS — Object Identity, Metadata and the Op Path Inside the OSD
2. 35Specialist Part (2): RADOS — The PG Log, Intervals, Missing Sets, and How Recovery and Backfill Work
3. 36Specialist Part (3): RADOS — Snapshots and Clones, Watch/Notify, OSD-Side cls, and the rados and pool Reference
4. 37Specialist Part (4): RBD — Layout on RADOS, Striping, Object Map and Fast-Diff, and the rbd Reference
5. 38Specialist Part (5): RBD — The librbd I/O Path, Layering and Copyup, Exclusive Lock, Caches and QoS
6. 39Specialist Part (6): RBD — Inside rbd-mirror: Journal versus Snapshot
7. 40Specialist Part (7): RGW — The Data Model on RADOS: Metadata, Bucket Index, Versioning, Manifest and Multipart
8. 41Specialist Part (8): RGW — The Request Path, SigV4, Quotas, Rate Limits, GC and Lifecycle
9. 42Specialist Part (9): RGW — Inside Multisite: Periods, Log Formats, Bucket Generations and the Sync Engine