Low level object version tracking using non-volatile memory write generations
First Claim
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1. A method for retrieving versioned data in a non-volatile memory, the method comprising:
- receiving a read request for a data object; and
in response to the request;
determining, via an object table, whether two or more versions of the data object exist in memory;
in accordance with a determination that two or more versions exist in memory, obtaining, via the object table, a respective location where a particular version of the two or more versions of the data object is stored; and
reading at least the particular version of the two or more versions of the data object from the respective location into volatile memory;
wherein the object table comprises multiple records and each record includes a reference to an object list, a version number distinct from the reference to the object list, and an object index.
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Abstract
A method for retrieving versioned data in a non-volatile memory is provided. The method includes: (1) receiving a read request for a data object, (2) in response to the request, determining, via an object table, whether one or more versions of the data object exist in memory, (3) in accordance with a determination that one or more versions exist in memory, obtaining, via the object table, a respective location where each of the one or more versions of the data object are stored, and (4) reading at least one of the one or more versions of the data object from the respective location into volatile memory.
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18 Claims
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1. A method for retrieving versioned data in a non-volatile memory, the method comprising:
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receiving a read request for a data object; and in response to the request; determining, via an object table, whether two or more versions of the data object exist in memory; in accordance with a determination that two or more versions exist in memory, obtaining, via the object table, a respective location where a particular version of the two or more versions of the data object is stored; and reading at least the particular version of the two or more versions of the data object from the respective location into volatile memory; wherein the object table comprises multiple records and each record includes a reference to an object list, a version number distinct from the reference to the object list, and an object index. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for retrieving versioned data, the system comprising:
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non-volatile memory configured to store one or more data objects; and one or more non-volatile memory controllers configured to; receive a read request for a data object; in response to the request; determine, via an object table, whether two or more versions of the data object exist in the non-volatile memory; in accordance with a determination that two or more versions exist in the non-volatile memory, obtain, via the object table, a respective location where a particular version of the two or more versions of the data object is stored; and read at least the particular version of the two or more versions of the data object from the respective location into volatile memory; wherein the object table comprises multiple records and each record includes a reference to an object list, a version number distinct from the reference to the object list, and an object index. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification