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:
Oct. 22, 2019
Filed:
Feb. 22, 2018
Amazon Technologies, Inc., Seattle, WA (US);
Amazon Technologies, Inc., Seattle, WA (US);
Abstract
A router of a block-level data storage service receives a request to generate a snapshot of a block device. The router, based on routing metadata for the block-level data storage service, identifies active metadata that indicates a first cell that may maintain the block device and alternate metadata that indicates a second cell that may maintain the block device. Based on a first state of the block device in the first cell, a second state of the block device in the second cell, and a predetermined set of rules defining operations corresponding to outcomes associated with the first state and the second state, the router determines which of the first cell and the second cell authoritatively maintains the block device. The router transmits the request to the appropriate cell in accordance with the predetermined set of rules.