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:
Jul. 20, 2010
Filed:
Aug. 10, 2006
Hong LI, Acton, MA (US);
Christopher John Stakutis, Concord, MA (US);
Hong Li, Acton, MA (US);
Christopher John Stakutis, Concord, MA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Provided are techniques for transferring data. It is determined whether an indicators map is to be associated with a source file that is being opened, wherein the indicators map indicates which source blocks of the source file have been updated since last being transferred to a target file. In response to determining that an indicators map is to be associated with the source file, it is determined whether the indicators map exists. In response to determining that the indicators map exists, it is determined whether the indicators map is to be trusted based on a last modified time and a last source file size stored in the indicators map and the source file. In response to determining that the indicators map is to be trusted, the indicators map is initialized. Then, in response to receiving a write for the source file, the indicators map is updated to indicate which portion of the source file has been modified.