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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.:

US 12309271 B1

PDFFull Text
Date of Patent:
May. 20, 2025

Filed:

Jan. 31, 2023

Techniques for maintaining file consistency during file system cross-region replication

Applicant:

Oracle International Corporation, Redwood Shores, CA (US);

Inventors:

Satish Kumar Kashi Visvanathan, San Jose, CA (US);

Viggnesh Venugopal, Santa Clara, CA (US);

Stephen Anthony Fridella, Watertown, MA (US);

Ashwin Vijayavel, Sunnyvale, CA (US);

Assignee:

Oracle International Corporation, Redwood Shores, CA (US);

Attorney:

Kilpatrick Townsend & Stockton LLP

Primary Examiner:

Eddy Cheung

Int. Cl.
CPC ...
G06F 11/14 (2006.01); G06F 9/50 (2006.01); G06F 11/20 (2006.01); G06F 16/11 (2019.01); G06F 16/174 (2019.01); G06F 16/178 (2019.01); G06F 16/182 (2019.01); G06F 16/185 (2019.01); G06F 16/23 (2019.01); G06F 16/27 (2019.01); G06F 21/60 (2013.01); G06F 21/62 (2013.01); H04L 9/08 (2006.01); H04L 9/14 (2006.01); H04L 9/32 (2006.01); G06F 16/176 (2019.01); G06F 16/22 (2019.01);
U.S. Cl.
CPC ...
G06F 16/1844 (2019.01); G06F 9/505 (2013.01); G06F 11/1417 (2013.01); G06F 11/1451 (2013.01); G06F 11/1464 (2013.01); G06F 11/2023 (2013.01); G06F 11/2028 (2013.01); G06F 16/128 (2019.01); G06F 16/1756 (2019.01); G06F 16/178 (2019.01); G06F 16/185 (2019.01); G06F 16/2365 (2019.01); G06F 16/27 (2019.01); G06F 21/602 (2013.01); G06F 21/6218 (2013.01); H04L 9/0819 (2013.01); H04L 9/0836 (2013.01); H04L 9/0891 (2013.01); H04L 9/0894 (2013.01); H04L 9/14 (2013.01); H04L 9/3228 (2013.01); G06F 16/1774 (2019.01); G06F 16/2246 (2019.01); G06F 2201/84 (2013.01);
Abstract

Novel techniques are described for maintaining file consistency between different cloud infrastructure regions during cross-region file storage replication. The novel techniques comprise upon detecting a file deletion status (i.e., a file directory entry version marked as deletion) in a source file system during a replication cycle, retrieving file name from a valid file directory entry of a prior snapshot to construct a temporary file directory entry containing necessary information for a target file system to reconstruct a duplicate file directory entry version marked as deletion. The temporary file directory entry is transferred from the source file system to the target file system during the same replication cycle.

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