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:
Mar. 14, 2017
Filed:
Jun. 28, 2013
Emc Corporation, Hopkinton, MA (US);
EMC IP Holding Company LLC, Hopkinton, MA (US);
Abstract
An improved technique involves managing conflicts over data changes between a data change initiator and multiple listeners to allow any of the listeners to prevent the initiator from changing data. Along these lines, a data change notification process resides in a storage processor in memory outside of an I/O stack in which the listeners and data change initiators reside. When a data change initiator prepares to perform a data change operation, it notifies the data change notification process. The data change notification process in turn sends a notification to the listeners that have registered with the data change notification process. If there is a peer data change notification process on another storage processor, the data change notification process sends a notification to that peer data change notification process so that the peer data change notification process may notify its registered listeners.