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:
Aug. 29, 2017
Filed:
Apr. 21, 2015
Applicant:
International Business Machines Corporation, Armonk, NY (US);
Inventors:
Assignee:
INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 17/30 (2006.01);
U.S. Cl.
CPC ...
G06F 17/30324 (2013.01); G06F 17/3023 (2013.01); G06F 17/30088 (2013.01); G06F 17/30339 (2013.01); G06F 17/30952 (2013.01);
Abstract
A selective tuple versioning is used on a files system for preserving past states of file system nodes by adding a bitmap to a row for a node within a file system table for preserving the past state of the node in a file system, receiving a request for updating the node along with a node identification (ID) and associated attributes of the node needing to be updated, generating a second time value indicating the time of the updating, and duplicating the row for the node into a new row in the file system table with an end time set equal to the second time value if the bit in the bitmap for the node is set.