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. 14, 2014
Filed:
Dec. 10, 2010
Paul R. Swan, Sammamish, WA (US);
Mathew George, Bellevue, WA (US);
David M. Kruse, Kirkland, WA (US);
Roopesh C. Battepati, Sammamish, WA (US);
Michael C. Johnson, Bothell, WA (US);
Paul R. Swan, Sammamish, WA (US);
Mathew George, Bellevue, WA (US);
David M. Kruse, Kirkland, WA (US);
Roopesh C. Battepati, Sammamish, WA (US);
Michael C. Johnson, Bothell, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
A connection state system is described herein that allows a client to resume a connection with a server or a different replacement server by remotely storing client state information in association with a resume key. The system provides a resume key filter operating at the server that facilitates the storing of volatile server state information. The state information can include information such as oplocks, leases granted to a client, and in-flight operations on a file handle. The resume key filter driver sits above the file system, which allows multiple file access protocols to use the filter. Upon a failover event, such as a server going down or losing connectivity to a client, the system can bring up another server or the same server and reestablish state for file handles held by various clients using the resume key filter.