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.

Date of Patent:
Apr. 07, 2015

Filed:

Jun. 29, 2012
Applicants:

Dixitkumar Vishnubhai Patel, Monroe, NJ (US);

Srinivasa Rao Vempati, Upton, MA (US);

Jean-pierre Bono, Westborough, MA (US);

Luogeng Dai, Shanghai, CN;

Inventors:

Dixitkumar Vishnubhai Patel, Monroe, NJ (US);

Srinivasa Rao Vempati, Upton, MA (US);

Jean-Pierre Bono, Westborough, MA (US);

Luogeng Dai, Shanghai, CN;

Assignee:

EMC Corporation, Hopkinton, MA (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F 11/00 (2006.01); G06F 11/16 (2006.01);
U.S. Cl.
CPC ...
G06F 11/165 (2013.01);
Abstract

A method is used in recovering file system blocks of file systems. A first read error is encountered upon reading a file system block of a file system. The file system block includes a first set of chunks. A second read error is encountered upon reading a duplicate copy of the file system block. The duplicate copy of the file system block includes a second set of chunks. Each chunk of the first and second sets of chunks is evaluated. Based on the evaluation, the file system block is recovered.


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