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. 07, 2025
Filed:
Dec. 29, 2023
Dell Products L.p., Round Rock, TX (US);
Dell Products L.P., Round Rock, TX (US);
Abstract
Access control data stored in the storage servers of a distributed data storage system is modified according to received access control commands and accessed to process host I/O requests without requiring the use of locks. Processing of certain access control commands includes allocating a new volume descriptor to store the updated access control data for a corresponding storage volume, and remapping the storage volume to the new volume descriptor with a single write operation. Each volume descriptor stores both reservation type and reservation holder data for the corresponding storage volume within a single memory register, allowing host I/O request processing logic to read both reservation type and reservation holder using a single read operation, and access control command processing logic to modify both reservation type and reservation holder using a single write operation. A registrants bitmap in the volume descriptor represents hosts registered for the corresponding storage volume.