Directed placement of data in a redundant data storage system
First Claim
1. A data processing apparatus, comprising:
- one or more processors;
a memory;
a metadata store storing information about files that are stored in a distributed data storage system, and comprising a class database;
logic coupled to the processor(s) and to the metadata store and comprising stored sequences of instructions which, when executed by the processor(s), cause;
receiving and storing in the class database a definition of a class of data storage servers comprising one or more server selection criteria and one or more representation counts;
associating the class with one or more directories of the data storage system;
in response to a data client storing a data file in a directory of the one or more directories, determining a set of data storage servers that match the server selection criteria and storing a plurality of replicas in the data storage servers according to the one or more representation counts;
wherein the one or more representation counts control how many replicas, of data files that map to the class, are stored across the set of data storage servers that match the server selection criteria.
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Accused Products
Abstract
A data processing apparatus, comprising a metadata store storing information about files that are stored in a distributed data storage system, and comprising a class database; one or more processing units; logic configured for receiving and storing in the class database a definition of a class of data storage servers comprising one or more subclasses each comprising one or more server selection criteria; associating the class with one or more directories of the data storage system; in response to a data client storing a data file in a directory, binding the class to the data file, determining and storing a set of identifiers of one or more data storage servers in the system that match the server selection criteria, and providing the set of identifiers to the data client.
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Citations
18 Claims
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1. A data processing apparatus, comprising:
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one or more processors; a memory; a metadata store storing information about files that are stored in a distributed data storage system, and comprising a class database; logic coupled to the processor(s) and to the metadata store and comprising stored sequences of instructions which, when executed by the processor(s), cause; receiving and storing in the class database a definition of a class of data storage servers comprising one or more server selection criteria and one or more representation counts; associating the class with one or more directories of the data storage system; in response to a data client storing a data file in a directory of the one or more directories, determining a set of data storage servers that match the server selection criteria and storing a plurality of replicas in the data storage servers according to the one or more representation counts; wherein the one or more representation counts control how many replicas, of data files that map to the class, are stored across the set of data storage servers that match the server selection criteria. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A non-transitory computer-readable data storage medium comprising stored sequences of instructions which, when executed by one or more processing unit(s), cause:
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receiving and storing, in a class database, a definition of a class of data storage servers comprising one or more server selection criteria and one or more representation counts; associating the class with one or more directories of the data storage system; in response to a data client storing a data file in a directory of the one or more directories, determining a set of data storage servers that match the server selection criteria and storing a plurality of replicas in the data storage servers according to the representation counts; wherein the one or more representation counts control how many replicas, of data files that map to the class, are stored across the set of data storage servers that match the server selection criteria. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A computer-implemented method for use in a computer system comprising one or more processors, comprising:
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receiving and storing, in a class database, a definition of a class of data storage servers comprising one or more server selection criteria and one or more representation counts; associating the class with one or more directories of the data storage system; in response to a data client storing a data file in a directory of the one or more directories, determining a set of data storage servers that match the server selection criteria and storing a plurality of replicas in the data storage servers according to the one or more representation counts; wherein the one or more representation counts control how many replicas, of data files that map to the class, are stored across the set of data storage servers that match the serve selection criteria. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification