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:
Nov. 21, 2023
Filed:
Oct. 04, 2021
Vmware, Inc., Palo Alto, CA (US);
Wenguang Wang, Santa Clara, CA (US);
Enning Xiang, Palo Alto, CA (US);
Pranay Singh, Palo Alto, CA (US);
Subhradyuti Sarkar, Palo Alto, CA (US);
VMware, Inc., Palo Alto, CA (US);
Abstract
The present disclosure is related to methods, systems, and machine-readable media for managing extent sharing between snapshots using mapping addresses. A first mapping address can be assigned to a first extent responsive to a request to write the first extent. A second mapping address can be assigned to a second extent responsive to a request to write the second extent. A snapshot can be created. A snapshot mapping address, that is monotonically increased from the second mapping address, can be assigned to the snapshot. A third mapping address, that is monotonically increased from the second mapping address, can be assigned to a third extent of the snapshot responsive to a request to write the third extent. An ownership status of each of the first extent, the second extent, and the third extent can be determined based respectively on: a comparison between the first mapping address and the snapshot mapping address, a comparison between the second mapping address and the snapshot mapping address, and a comparison between the third mapping address and the snapshot mapping address.