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:
May. 12, 2015
Filed:
Jun. 05, 2012
Yariv Bachar, Tel Aviv, IL;
Aviv Kuvent, Raanana, IL;
Asaf Levy, Tel Aviv, IL;
International Business Machines Corporation, Armonk, NY (US);
Abstract
For preserving past states of file system nodes, selective tuple versioning on a file system table is used 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. A request is received for updating the node along with a node identification and associated attributes of the node needing to be updated. A second time value indicating the time of the updating is generated. The row for the node is duplicated 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. The row associated with the node is updated according to the update request.