Method and apparatus for implementing a file system

Details Method and apparatus for implementing a file system Method and apparatus for implementing a file system

G - Physics

06

F

G06F 12/00 (2006.01)

Patent

CA 2568337

A system and method for efficiently implementing a local or distributed file system is disclosed. The system may include a distributed virtual file system (~dVFS~) that utilizes a persistent intent log (~PIL~) to record transactions to be applied to the file system. The PIL is preferably implemented in stable storage, so that a logical operation may be considered complete as soon as the log record has been made stable. This allows the dVFS to continue immediately, without waiting for the operation to be applied to a local or real file system. The dVFS may further incorporate replication to one or more remote file systems as an integral facility.

La présente invention concerne un système et un procédé permettant de mettre en oeuvre efficacement un système de fichiers local ou réparti. Ce système peut comprendre un système de fichiers virtuel réparti ( dVFS ) qui utilise un journal d'intention persistante ( PIL ) pour enregistrer les transactions à appliquer au système de fichiers. Ce PIL est de préférence mise en oeuvre dans un stockage stable, de sorte qu'une opération logique puisse être considérée comme terminée dès que l'enregistrement du journal a été rendu stable. Ceci permet au système dVFS de continuer immédiatement, sans attendre que l'opération soit appliquée à un système de fichiers réel ou local. Ce système dVFS peut aussi incorporer une réplique d'un ou de plusieurs systèmes de fichiers distants sous forme de d'installation intégrale.

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