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:
Dec. 21, 2021
Filed:
Aug. 13, 2019
International Business Machines Corporation, Armonk, NY (US);
Michael S. Fruchtman, San Jose, CA (US);
Avishai H. Hochberg, San Jose, CA (US);
Vadzim I. Piletski, San Jose, CA (US);
James P. Smith, Redwood City, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
For accessing files from block-level backups of a virtual disk, a system, method, computer program product and apparatus are disclosed. The system includes an apparatus with a changed block module that determines changed blocks between a previous and a current block-level backup of a virtual disk. A mapping module maps logical clusters of the virtual disk to the changed blocks and identifies files corresponding to the logical clusters. A changed file module designates files corresponding to the logical clusters as changed files, unless current attributes of files for the current backup match attributes of the files in a backup file index corresponding to the previous backup. The changed file module stores the current attributes and extents for changed files within blocks of a backup storage device for updating in the backup file index. The method and computer program product perform these functions and may use the system and the apparatus.