US 8,707,104 B1 · Systems and methods for error injection in data storage systems

Abstract

Embodiments of the solid-state storage system provided herein are configured to perform improved mechanisms for testing of error recovery of solid state storage devices. In some embodiments, the system is configured to introduce or inject errors into data storage commands or operations performed in the non-volatile memory. Injected errors include corruption of data stored in the non-volatile memory, deliberate failure to execute storage operations, and errors injected into communication protocols used between various elements of the device. In some embodiments, injected errors can include direct errors that trigger an immediate execution of error recovery mechanisms and delayed errors that trigger execution of error recovery mechanisms at a later time. Error recovery mechanisms can be tested in an efficient, reliable, and deterministic manner to help ensure effective operation of storage devices. The integrity of non-volatile memory can also be tested.

Claims27

Dependent claims

A method for testing a non-volatile storage system comprising a bridge configured to communicate with a controller over a first interface for receiving data access commands from the controller and communicate with a non-volatile solid-state memory over a second interface for communicating data access operations, the method comprising:

in accordance with a testing mode set by the controller, introducing, by the bridge, at least one error into execution of a storage access command directed to at least one memory location of a plurality of locations of the non-volatile memory;
providing, by the bridge, a report to the controller, the report indicating at least one of successful completion of the command and error;
executing, by at least one of the controller and the bridge, an error recovery mechanism configured to detect the introduced error;
and
in response to determining that the report indicates an unexpected error as a result of the at least one memory location being defective, imitating, by at least one of the controller and the bridge, the error recovery mechanism on the at least one memory location to correct the unexpected error.

2 more elements

Dependencies are inferred from the claim text.

Systems and methods for error injection in data storage systems

Life of this patent

Systems and methods for error injection in data storage systems

Life of this patent

Abstract

Claims27