End-to-end checksumming for database environments

Details End-to-end checksumming for database environments End-to-end checksumming for database environments

2006-04-04

2006-04-04

Iqbal, Nadeem (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S052000, C714S049000

Reexamination Certificate

active

07024593

ABSTRACT:
Described are techniques used in detection of a data corruption in a computer system. A host issues a write request that includes a checksum value determined in accordance with data associated with the write request. The write request is received by a data storage system that performs data validation using the checksum. If the data validation succeeds, the write operation proceeds. Otherwise, it is determined that the data is corrupt and a checksum error is returned to the issuing host. The host issues a vendor-defined write request operation that includes the checksum as a data field in the request packet sent to the data storage system. Filter drivers are used in obtaining the checksum and modifying the write request packet to specify a vendor-defined write operation if checksumming is enabled for the write operation.

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