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:
Mar. 16, 2021
Filed:
Dec. 28, 2018
Virtuozzo International Gmbh, Schaffhausen, CH;
Virtuozzo International GmbH, Schaffhausen, CH;
Abstract
Systems and methods are disclosed herein for maintaining data integrity of data in a storage device. An exemplary method comprises determining whether checksums associated with data on the storage device are trusted or untrusted, responsive to determining that the checksums are trusted, retrieving the checksums from a checksum archive, otherwise initializing the checksums as unknown, when a received storage request is a write request, calculating a checksum of the data and updating the checksum in memory, when a received storage request is a read request and an in-memory checksum associated with the identified block is not unknown, calculating the checksum of the data in the identified block and comparing the checksum with an in-memory checksum associated with the identified block, determining that corruption has occurred when the checksums don't match and saving checksums associated with each of the uncorrupted data blocks of the storage device to an archive.