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:
Feb. 18, 2020
Filed:
Jul. 30, 2018
Emc Ip Holding Company Llc, Hopkinton, MA (US);
Kedar S. Patwardhan, Irvine, CA (US);
Rajesh K. Nair, San Jose, CA (US);
EMC IP Holding Company LLC, Hopkinton, MA (US);
Abstract
In general, embodiments of the invention relate to a method for processing input/output (I/O requests). The method includes receiving an I/O request from a virtual machine executing on a host computing device, where the host computing device comprises a filter driver. The method further includes making a first determination that the filter driver is in a backup mode and based on the first determination, making a second determination that the I/O request intersects with a prior filter driver tracking list (FDTL). Further, in response to the second determination, the method includes pausing, by the filter driver, the processing of the I/O request, obtaining, from a primary disk, data associated with the I/O request, after obtaining the data, resuming the processing of the I/O request, where processing the I/O request results in the data on the primary disk being overwritten with new data.