WARNING: This is the _old_ Lustre wiki, and it is in the process of being retired. The information found here is all likely to be out of date. Please search the new wiki for more up to date information.
Architecture Descriptions
The architecture descriptions listed below provide information about Lustre architecture and design and are intended to help users better understand the conceptual framework of the Lustre file system.
Note: These documents reflect the state of design of a Lustre feature at a particular point in time. They many contain information that is incomplete or obsolete and may not reflect the current architecture, features and functionality of Lustre.
Backup (File system backup)
Caching OSS (Caching on object storage servers)
Changelogs (Per-server logs of data or metadata changes)
Changelogs 1.6 (Used to facilitate efficient replication of large Lustre 1.6 filesystems)
Client Cleanup (Use cases, business drivers, models to consider, implementation contraints)
Clustered Metadata (Clustered metadata server capability)
Commit on Share (Better recover-ability in an environment where clients miss reconnect window)
CROW (CReate On Write optimizes create performance by deferring OSS object creation)
CTDB with Lustre (Cluster implementation of the TDB database with Lustre provides a solution for windows pCIFS)
Cuts (Technique for recovering file system metadata stored on file server clusters)
DMU OSD (An implementation of the Object Storage Device API for a Data Management Unit)
End-to-end Checksumming (Lustre network checksumming)
Epochs (used to merge distributed data and meta-data updates in a redundant cluster configuration)
External File Locking (File range lock and whole-file lock capabilities)
FIDs on OST (File identifiers used to identify objects on an object storage target)
Fileset (An efficient representation of a group of file identifiers (FIDs))
Flash Cache (Very fast read-only flash storage)
Free Space Management (Managing free space for stripe allocation)
GNS (Global namespace for a distributed file system)
HSM (Hierarchical storage management)
HSM and Cache (Reuse of components by Lustre features that involve migration of file system objects)
HSM Migration (Use cases and high-level architecture for migrating files between Lustre and a HSM system)
Interoperability fids zfs (Client, server, network, storage interoperability during migration to clusters based on file identifiers and the ZFS file system)
Interoperability 1.6 1.8 2.0 (interoperability definitions and QAS summary)
IO system (Client IO and server I/O request handling)
Libcfs (Portable runtime environment for process management and debugging support)
Punch and Extent Migration Requirements
