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:
Apr. 19, 2022
Filed:
Nov. 08, 2019
Dell Products L.p., Round Rock, TX (US);
Gokul Thiruchengode Vajravel, Bangalore, IN;
Jyothi Bandakka, Bengaluru, IN;
Dell Products L.P., Round Rock, TX (US);
Abstract
A disk-based write filter can include a filter driver that is loaded below the file system driver to thereby provide write filter functionality at the disk level, and a supporting driver that is loaded above the file system driver. When an excluded file is opened, the supporting driver can obtain the file's disk sector information and provide it to the filter driver to cause the filter driver to pass through I/O requests that target sectors defined in the file's disk sector information. When the excluded file is closed, the supporting driver can again obtain the file's disk sector information and provide it to the filter driver to allow the filter driver to identify any additional sectors that may have been allocated to the file. The filter driver can copy any such sectors from an overlay to disk and commence passing through I/O requests that target these sectors.