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:
Jan. 12, 2016
Filed:
Jun. 26, 2013
Emc Corporation, Hopkinton, MA (US);
Robert L. Fair, Cary, NC (US);
Shobhan Kumar Chinnam, Cupertino, CA (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
A computer-implemented method to reduce slow or stuck SCSI commands at a SCSI target is disclosed. The method starts with initiating a first request to acquire an exclusive lock for a first service daemon of a SCSI target to shut down a first service, where the SCSI target offers a plurality of services, and where each service corresponds to a service daemon. The first service daemon receives a first rejection of the exclusive lock for the first request as the exclusive lock is currently held by a second service daemon corresponding to a second service. Then the first service daemon initiates a second request to acquire the exclusive lock in an attempt to shut down the first service again after a delay period. In response to a second rejection, execution of SCSI commands associated with the second service currently possessing the exclusive lock is terminated.