The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 21, 2017
Filed:
Feb. 15, 2013
Panzura, Inc., San Jose, CA (US);
John Richard Taylor, Tiburon, CA (US);
Randy Yen-pang Chou, San Jose, CA (US);
Andrew P. Davis, Santa Cruz, CA (US);
Panzura, Inc., Campbell, CA (US);
Abstract
The disclosed embodiments provide a system that uses overlay metadata in a cloud controller to generate incremental snapshots for a distributed filesystem. Two or more cloud controllers collectively manage distributed filesystem data that is stored in one or more cloud storage systems. More specifically, the cloud controllers cache and ensure data consistency for the data stored in the cloud storage systems, with each cloud controller maintaining a metadata hierarchy that reflects the current state of the distributed filesystem. During operation, a cloud controller receiving new data from a client: (1) stores the new data in the cloud controller; (2) creates a metadata entry for the new data in the locally maintained metadata hierarchy; (3) updates the overlay metadata to point to the metadata entry and the new data stored in the cloud controller; and (4) then uses the overlay metadata to generate an incremental snapshot for the new data.