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:
Mar. 13, 2018
Filed:
Dec. 19, 2014
Emc Corporation, Hopkinton, MA (US);
Hao Pan, Shanghai, CN;
Feng Zhang, Shanghai, CN;
Kenny Zhou, Shanghai, CN;
Yi Wang, Shanghai, CN;
Kent J. Costa, Cary, NC (US);
EMC IP Holding Company LLC, Hopkinton, MA (US);
Abstract
A method of efficiently checking a filesystem for errors is provided, the filesystem including a set of data blocks and a set of VBPs, the set of VBPs arranged in a set of VBP blocks, each VBP block storing a plurality of the VBPs. The method includes multiple stages, one stage including iterating through VBP blocks of the filesystem to generate a validity bitmap, and a later stage including traversing a block pointer structure associated with each of a set of files of the filesystem, the traversal making reference to the validity bitmap.