Apparatus, system, and method for validating that correct data is read from a storage device

1. A method to validate that correct data is read from a storage device, the method comprising:

generating a hash value from a logical address of a read request for a data storage device;

reading, from the data storage device, data identified by the read request and a stored hash value stored with the data, the stored hash value generated from a logical address for data written to the data storage device; and

verifying that the generated hash value matches the stored hash value read from the data storage device.

2. The method of claim 1 , further comprising:

receiving a write storage request to write data of the write storage request to the data storage device, the write storage request comprising a logical address for the data of the write storage request; and

storing the data of the write storage request in the data storage device with a hash value generated from the logical address of the data of the write request.

3. The method of claim 2 , wherein the hash value stored with the data of the write storage request comprises the logical address for the data of the write request.

4. The method of claim 2 , wherein the hash value stored with the data of the write storage request comprises a hash value derived from the logical address of the data of the write request.

5. The method of claim 1 , further comprising re-reading the data of the read request from the data storage device in response to the generated hash value failing to match the stored hash value.

6. The method of claim 1 , further comprising rebuilding a logical-to-physical map for the data storage device in response to the generated hash value failing to match the stored hash value, the logical-to-physical map mapping the logical address of the read request to a physical location on the data storage device.

7. The method of claim 6 , further comprising re-reading the data of the read request and the stored hash value from the data storage device based on the rebuilt logical-to-physical map and verifying that the generated hash value matches the stored hash value re-read from the data storage device, each in response to rebuilding the logical-to-physical map.

8. The method of claim 1 , further comprising mapping, using a logical-to-physical map, the logical address of the read request to a physical location in the data storage device to determine a location in the data storage device from which to read the data of the read request and the stored hash value.

9. The method of claim 1 , wherein verifying that the generated hash value matches the stored hash value detects an error in retrieval of the data identified by the read request, the error comprising one or more of an error in a logical-to-physical map for the non-volatile memory and an error occurring in a control line for the non-volatile memory.

10. The method of claim 1 , wherein the generated hash value comprises the logical address of the read request and the stored hash value comprises the logical address of the data written to the data storage device.

11. The method of claim 1 , wherein the generated hash value is generated from the logical address of the read request and the stored hash value is generated from the logical address for data written to the data storage device.

12. The method of claim 1 , wherein the stored hash value is stored in a packet header, the packet header stored with the data of the read request.

13. An apparatus to validate that correct data is read from a storage device, the apparatus comprising:

means for generating a hash value from a logical address of a read request for a data storage device;

means for reading, from the data storage device, data identified by the read request and a stored hash value stored with the data, the stored hash value generated from a logical address for data written to the data storage device; and

means for verifying that the generated hash value matches the stored hash value read from the data storage device.

14. The apparatus of claim 13 , further comprising:

means for receiving a write storage request to write data of the write storage request to the data storage device, the write storage request comprising a logical address for the data of the write storage request; and

means for storing the data of the write storage request in the data storage device with a hash value generated from the logical address of the data of the write request.

15. The apparatus of claim 13 , further comprising means for rebuilding a logical-to-physical map for the data storage device in response to the generated hash value failing to match the stored hash value, the logical-to-physical map mapping the logical address of the read request to a physical location on the data storage device.

16. A system to validate that a correct data segment is read from a storage device, the system comprising:

a data storage device;

a storage controller comprising one or more of logic hardware and executable code, the executable code stored on a non-transitory computer readable storage medium, the storage controller configured to control data storage on the data storage device and to,

generate a hash value from a logical address of a read request for the data storage device;

read, from the data storage device, data identified by the read request and a stored hash value stored with the data, the stored hash value generated from a logical address for data written to the data storage device; and

verify that the generated hash value matches the stored hash value read from the data storage device.

17. The system of claim 16 , further comprising a computer device, wherein at least one of the data storage device and the storage controller is in communication with the computer device over a system bus.

18. The system of claim 16 , wherein the data storage device comprises a solid-state storage device.

19. The system of claim 16 , wherein the data storage device comprises a sequential storage device.

20. A computer program product comprising a non-transitory computer readable storage medium having computer usable program code executable to perform operations for validating that a correct data segment is read from a storage device, the operations of the computer program product comprising:

generating a hash value from a logical address of a read request for a data storage device, wherein a logical-to-physical map maps the logical address of the read request to a physical location in the data storage device;

reading, from the data storage device, data identified by the read request and a stored hash value stored with the data, the stored hash value generated from a logical address for data written to the data storage device; and

verifying that the generated hash value matches the stored hash value read from the data storage device to detect an error in retrieval of the data identified by the read request.

21. The computer program product of claim 20 , wherein the operations further comprise one or more of:

re-reading the data of the read request and the stored hash value from the data storage device in response to the generated hash value failing to match the stored hash value; and

rebuilding the logical-to-physical map in response to the generated hash value failing to match the stored hash value.

22. The computer program product of claim 20 , wherein the generated hash value comprises one or more of the logical address of the read request and a hash value derived from the logical address of the read request.

23. An apparatus to validate that correct data is read from a storage device, the apparatus comprising:

a hash generation module configured to generate a hash value from a logical address of a read request for a data storage device, wherein a logical-to-physical map maps the logical address of the read request to a physical location on the data storage device;

a read data module configured to read, from the physical location on the data storage device, data identified by the read request and a stored hash value stored with the data, the stored hash value generated from a logical address for data written to the data storage device; and

a hash check module configured to verify that the generated hash value matches the stored hash value to detect an error in retrieval of the data identified by the read request, wherein the hash generation module, the read data module, and the hash check module comprise one or more of logic hardware and executable code, the executable code stored on a non-transitory computer readable storage medium.

24. The apparatus of claim 23 , further comprising:

a write request receiver module configured to receive a write storage request to write data of the write storage request to the data storage device, the write storage request comprising a logical address for the data of the write storage request; and

a write data module configured to store the data of the write storage request in the data storage device with a hash value generated from the logical address of the data of the write request;

wherein the request receiver module and the write data module comprise one or more of logic hardware and executable code, the executable code stored on a non-transitory computer readable medium.

25. The apparatus of claim 23 , further comprising a rebuild module configured to rebuild the logical-to-physical map in response to the hash check module determining that the generated hash value fails to match the stored hash value, the rebuild module comprising one or more of logic hardware and executable code, the executable code stored on a non-transitory computer readable medium.