System And Method For Synchronizing File Systems With Large Namespaces

摘要

A method for facilitating synchronization of a remote file system (RFS) and a local file system (LFS) includes maintaining a global revision identifier associated with the RFS, where the global revision identifier has a variable state, and responsive to the RFS being modified, updating metadata associated with one or more of the file system objects of the RFS based on a state of the global revision identifier. More particularly, the method includes updating the global revision identifier to a new state in response to the RFS modification and then updating the metadata of the folder(s) associated with the RFS modification. The RFS metadata is partitioned by folder and file to facilitate efficient searching based on a requested namespace view. Another method utilizes prior revision identifiers stored in the LFS to limit the RFS metadata returned to the local cloud during a rescan, by excluding the data set that has not changed, which improves the efficiency of the rescan synchronization.

主权项

1. In a remote file storage system, a method for facilitating synchronization of a remote file system (RFS) and a local file system (LFS), said RFS being located remotely from said LFS, said method comprising:
maintaining a global revision identifier associated with said RFS, said global revision identifier having a variable state; establishing a connection with a user; providing access to said RFS to said user, said RFS including a plurality of file system objects, each of said file system objects being associated with metadata; receiving an instruction to modify said RFS from said user; and responsive to said RFS being modified, updating said metadata associated with one or more of said file system objects of said RFS based on a state of said global revision identifier.