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:
Sep. 17, 2019
Filed:
Jun. 28, 2016
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, an apparatus is disclosed. The apparatus includes a changed block module that obtains a list of changed blocks between a previous and a current backup of a virtual disk. The apparatus includes a mapping module that maps logical clusters of the virtual disk to the changed blocks and identifies files corresponding to the logical clusters. The apparatus further includes a changed file module that designates the files corresponding to the logical clusters as changed files, unless current attributes of the files for the current backup match attributes of the files in a backup file index corresponding to the previous backup of the virtual disk. The changed file module further stores the current attributes and extents for the changed files within blocks of a backup storage device for updating in the backup file index.