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:
May. 25, 2021
Filed:
Jul. 11, 2019
Emc Ip Holding Company Llc, Hopkinton, MA (US);
Alex Soukhman, Raanana, IL;
Vladimir Shveidel, Pardes-Hana, IL;
Ronen Gazit, Tel Aviv, IL;
Uri Shabi, Tel Mond, IL;
EMC IP Holding Company LLC, Hopkinton, MA (US);
Abstract
Virtual block redirection clean-up is accomplished for a virtual block in a mapper tree for a logical volume that is redirected to a destination virtual block in the mapper tree. In response to redirection of the virtual block, a redirection notification is sent to each component in a set of dependent components. Each dependent component may store one or more pointers to pointers located within virtual blocks of the mapper tree. The redirected virtual block is cleaned up in response to determining that each dependent component has expressly indicated, in response to the redirection notification, that it does not store any pointer to any pointer that is located within the redirected virtual block.