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:
Jun. 17, 2025
Filed:
Aug. 02, 2023
Vmware, Inc., Palo Alto, CA (US);
Kashish Bhatia, Bangalore, IN;
Zubraj Singha, Guwahati, IN;
Goresh Vitthalrao Musalay, Bangalore, IN;
VMware LLC, Palo Alto, CA (US);
Abstract
A data structure tracks the usage of an eager-zeroed virtual disk on a per block basis and this data structure is referenced during migration or cloning of the eager-zeroed virtual disk so that copying of the zero blocks can be avoided. A method of migrating or cloning the eager-zeroed virtual disk stored in a first storage device comprises: determining for each of a plurality of unique sets of blocks using this data structure, whether or not any of the blocks in the unique set has been written to since the initialization of the virtual disk; and for each unique set determined to have at least one block that has been written to since the initialization of the virtual disk, issuing a copy command to make a copy of all blocks in the unique set in a second storage device.