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:
Dec. 03, 2013
Filed:
Oct. 24, 2011
Kurt Alan Shoens, Los Altos, CA (US);
Kurt Alan Shoens, Los Altos, CA (US);
Oracle International Corporation, Redwood City, CO (US);
Abstract
Embodiments of the invention include systems and methods for providing writable snapshot functionality for file systems. Pointer-based snapshots can be taken of an active version of the file system resulting in either (1) a read-only snapshot image and a new active version of the file system resulting from a read-only snapshot operation; or (2) a read-only snapshot image and two new active versions of the file system resulting from a writable snapshot operation. The two active file systems generated from writable snapshot operations are each independently and concurrently writable. Various techniques are also presented for handling multiple, concurrently active file systems. For example, novel techniques are described for allowing snapshot restore, compaction, and other functionality to operate in an environment having multiple read-only and writable versions of the file system.