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. 27, 2014
Filed:
Feb. 28, 2012
Sai Sudhir Anantha Padmanaban, Redmond, WA (US);
Vyacheslav Kuznetsov, Sammamish, WA (US);
Alan Warwick, Bellevue, WA (US);
Andrea D'amato, Kirkland, WA (US);
Sai Sudhir Anantha Padmanaban, Redmond, WA (US);
Vyacheslav Kuznetsov, Sammamish, WA (US);
Alan Warwick, Bellevue, WA (US);
Andrea D'Amato, Kirkland, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
The present invention extends to methods, systems, and computer program products for implementing persistent reservation techniques for establishing ownership of one or more physical disks. These persistent reservation techniques can be employed to determine ownership of physical disks in a storage pool as well as in any other storage configuration. Using the persistent reservation techniques of the present invention, when a network partition occurs, a defender of a physical disk does not remove a challenger's registration key until the defender receives notification that the challenger is no longer in the defender's partition. In this way, pending I/O from applications executing on the challenger will not fail due to the challenger's key being removed until the proper ownership of the physical disk can be resolved.