METHOD, APPARATUS AND COMPUTER PROGRAM PRODUCT FOR MANAGING DATA ACCESS
First Claim
1. A method of managing data access, comprising:
- in response to receiving a read request for target data, obtaining an external address of the target data from the read request, the external address being an address unmapped to a storage system;
determining, based on the external address, hit information of the target data in a cache of the storage system; and
determining, based on the hit information, an address from the external address and an internal address for providing the target data, the internal address being determined based on the external address and a mapping relationship.
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Accused Products
Abstract
In response to receiving a read request for target data, an external address of the target data is obtained from the read request, which is an address unmapped to a storage system; hit information of the target data in cache of the storage system is determined based on the external address; and based on the hit information, an address from the external address and an internal address for providing the target data is determined. The internal address is determined based on the external address and a mapping relationship. Therefore, it can shorten the data access path, accelerate the responding speed for the data access request, and allow the cache to prefetch the data more efficiently.
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Citations
14 Claims
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1. A method of managing data access, comprising:
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in response to receiving a read request for target data, obtaining an external address of the target data from the read request, the external address being an address unmapped to a storage system; determining, based on the external address, hit information of the target data in a cache of the storage system; and determining, based on the hit information, an address from the external address and an internal address for providing the target data, the internal address being determined based on the external address and a mapping relationship. - View Dependent Claims (2, 3, 4, 5)
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6. A method of managing data access, comprising:
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in response to receiving a write request for target data, obtaining the target data and an external address of the target data from the write request, the external address being an address unmapped to a storage system; storing the target data in association with the external address into a cache in the storage system; and in response to a cache flush request for the cache, determining a mapping relationship for mapping the external address to an internal address of the storage system; determining, based on the external address and the mapping relationship, the internal address for storing data in the cache into a memory of the storage system; and storing the data into the memory of the storage system based on the internal address.
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7. A device for managing data access, comprising:
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at least one processing unit; and at least one memory coupled to the at least one processing unit and storing instructions executable by the at least one processing unit, the instructions, when executed by the at least one processing unit, causing the device to perform acts comprising; in response to receiving a read request for target data, obtaining an external address of the target data from the read request, the external address being an address unmapped to a storage system; determining, based on the external address, hit information of the target data in a cache of the storage system; and determining, based on the hit information, an address from the external address and an internal address for providing the target data, the internal address being determined based on the external address and a mapping relationship. - View Dependent Claims (8, 9, 10, 11)
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12. A device for managing data access, comprising:
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at least one processing unit; and at least one memory coupled to the at least one processing unit and storing instructions executable by the at least one processing unit, the instructions, when executed by the at least one processing unit, causing the device to perform acts comprising; in response to receiving a write request for target data, obtaining the target data and an external address of the target data from the write request, the external address being an address unmapped to a storage system; storing the target data in association with the external address into a cache in the storage system; and in response to a cache flush request for the cache, determining a mapping relationship for mapping the external address to an internal address of the storage system; determining, based on the external address and the mapping relationship, the internal address for storing data in the cache into a memory of the storage system; and storing the data into the memory of the storage system based on the internal address.
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13. A computer program product having a non-transitory computer readable medium which stores a set of instructions to manage data access;
- the set of instructions, when carried out by computerized circuitry, causing the computerized circuitry to perform a method of;
in response to receiving a read request for target data, obtaining an external address of the target data from the read request, the external address being an address unmapped to a storage system; determining, based on the external address, hit information of the target data in a cache of the storage system; and determining, based on the hit information, an address from the external address and an internal address for providing the target data, the internal address being determined based on the external address and a mapping relationship.
- the set of instructions, when carried out by computerized circuitry, causing the computerized circuitry to perform a method of;
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14. A computer program product having a non-transitory computer readable medium which stores a set of instructions to manage data access;
- the set of instructions, when carried out by computerized circuitry, causing the computerized circuitry to perform a method of;
in response to receiving a write request for target data, obtaining the target data and an external address of the target data from the write request, the external address being an address unmapped to a storage system; storing the target data in association with the external address into a cache in the storage system; and in response to a cache flush request for the cache, determining a mapping relationship for mapping the external address to an internal address of the storage system; determining, based on the external address and the mapping relationship, the internal address for storing data in the cache into a memory of the storage system; and storing the data into the memory of the storage system based on the internal address.
- the set of instructions, when carried out by computerized circuitry, causing the computerized circuitry to perform a method of;
Specification