Egnyte, Inc.

Remus Koos

Ravi Wijayaratne

Manish Marathe

Ray White

Amrit Jassal

Harikesavan Krishnan

Aahz

Rajesh Ram

Sriram Gopalan

Markku Mielityinen

Heikki J Toivonen

Dmitry Tisnek

Tal Broner

Hakan Ancin

Roman Levin

Purvi Talati

A method for synchronizing a local file system (LFS) and a remote (cloud) file system (RFS) includes the step of storing events indicative of differences between the LFS and the RFS, where the events are associated with file system objects of the LFS and RFS. The method further includes the steps of prioritizing the events, generating file system operations for the events based at least in part on the prioritization of the events, and performing at least some of the file system operations to synchronize the LFS and RFS. Prioritizing the events includes defining a plurality of service classes (e.g., based on type of event, event attribute, etc.), assigning a priority to each of the service classes, and assigning each event to one of said service classes. Systems are also described. The invention allocates limited synchronization resources based on a predefined policy to synchronize important file system objects sooner.

System and method for policy based synchronization of remote and local file systems

A novel method for restarting a steady-state synchronization process includes persisting synchronization data in non-volatile memory before restarting, and utilizing the persisted synchronization data to restart the synchronization where the prior steady-state synchronization process left off. In a particular embodiment, the synchronization data is indicative of a particular point of the synchronization process and is utilized to begin synchronizing from that point after the service is restarted. In a more particular embodiment, the synchronization data is a particular operation of a sequence of operations performed as part of the synchronization. In another particular embodiment, operations associated with a batch are applied before stopping the synchronization.

System and method for eliminating full rescan synchronizations on service restarts

A method for synchronizing a file system (FS) and a remote file system (RFS) includes monitoring the FS for FS events, generating FS event records, receiving RFS event records of RFS events, generating file system operations (FSOs) based on the FS and RFS event records, and communicating the FSOs to the FS and RFS to synchronize them. A method for generating the FSOs includes accessing a plurality of FS and/or RFS event records, processing the accessed records to generate processed event records, generating the FSOs based on the processed event records, and outputting the FSOs to cause synchronization of the FS and RFS. Systems are also described. The invention facilitates event-based, steady-state synchronization of local and remote file systems.

System and method for event-based synchronization of remote and local file systems

The invention prevents improper deletes of file system objects during rescan synchronizations of local and remote (cloud) file systems. File and folder deletes are validated (confirmed) during a rescan synchronization using events generated for a steady state synchronization process. Any improper deletes are fenced and not allowed to proceed during synchronization. A method for synchronizing local (LFS) and remote (RFS) file systems includes monitoring the LFS for changes, generating a first set of events as part of a first synchronization routine (e.g., a steady state synchronization routine), generating a second set of events as part of a second (rescan) synchronization routine, validating selected events of the second set with events of the first set to determine whether each of the selected events of the second set is valid or invalid, and synchronizing the file systems based on the events of the second set excluding those that have been invalidated. Storage systems are also disclosed.

System and method for delete fencing during synchronization of remote and local file systems

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San Jose, CA, United States of America

Remus Koos