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:
Sep. 28, 2021
Filed:
Jan. 29, 2019
International Business Machines Corporation, Armonk, NY (US);
Beth A. Peterson, Tucson, AZ (US);
Christopher D. Filachek, Lagrangeville, NY (US);
Mark A. Lehrer, Poughkeepsie, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method for removing stale messages from a storage controller is disclosed. In one embodiment, such a method includes querying, by a host system, a storage controller to determine ownership of a lock on the storage controller. The host system receives, in response to the query, information indicating that the lock has been granted to the host system. This allows the host system to treat the lock as being granted even though the host system has not received a 'lock granted' message from the storage controller. Before using the lock, the host system sends, to the storage controller, an instruction to clear any stale messages on the storage controller related to the lock. A corresponding system and computer program product are also disclosed.