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Data storage method and apparatus

A data storage and data technology, applied in the field of data processing, can solve problems such as interference, low effective utilization of storage space, occupying multiple copies of storage space, etc., and achieve the effect of reducing performance impact

Inactive Publication Date: 2015-09-16
CHINA MOBILE COMM GRP CO LTD
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Problems solved by technology

Its main disadvantage is that for the cold data stored in the data storage node with fewer visits, it also needs to occupy multiple copies of storage space, making it impossible to free up more storage space for the hot data stored in the data storage node with more visits use, resulting in low effective utilization of storage space
In addition, for data backup operations, data needs to be read from online data storage nodes, which will have a certain impact and interference on normal business operations
[0005] To sum up, in a distributed data storage system, the effective utilization of storage space is low, and reading data from online data storage nodes will have certain impact and interference on normal business operations

Method used

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Embodiment Construction

[0014] The main realization principles, specific implementation methods and corresponding beneficial effects of the technical solutions of the embodiments of the present invention will be described in detail below with reference to each accompanying drawing.

[0015] The embodiment of the present invention proposes a data storage method, such as figure 1 As shown, the specific processing flow is as follows:

[0016] Step 11, in the distributed data storage system, determine whether the data in the data block is cold data, if the judgment result is yes, execute step 12, otherwise end the process.

[0017] Within the first set duration, determine the access frequency and value of each data block in the data storage node, and determine the access frequency of each data block, if the ratio of the access frequency to the access frequency and value of a single data block is less than the first When the threshold is set, it is determined that the data in the data block is cold data....

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Abstract

The invention discloses a data storage method and apparatus. The method comprises the following steps: in a distributed data storage system, if it is determined that data in a data block is cold data, receiving and storing the cold data as a backup; according to the cold data stored as the backup, when it is determined that data storage nodes are internally provided with at least two data blocks as the same as the cold data, reserving the data block in one of the data storage nodes; and indicating each data storage node in the distributed data storage system to share the reserved data block. According to the invention, the problems can be quite well solved that in the distributed data storage system, the effective utilization rate of storage space is quite low, and when data is read from the online data storage nodes for backup operation, certain interference and influences are exerted on normal service operation.

Description

technical field [0001] The present invention relates to the technical field of data processing, in particular to a data storage method and device. Background technique [0002] A distributed data storage system is composed of several data storage systems distributed on multiple computer nodes. Wherein, a data storage system distributed in multiple computer nodes may also be referred to as a data storage node. [0003] In a distributed data storage system, data backup is usually used to ensure the reliability of data storage. Among them, the data stored as a backup can be called a copy. In general, a distributed data storage system uses multiple copies to ensure the reliability of data storage. For example, the 2-copy or 3-copy technology is adopted, and the implementation method is to divide the storage volume provided to the user into data blocks of a fixed size. For data blocks, the system keeps a fixed number of data copies on different data storage nodes. With the c...

Claims

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Application Information

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IPC IPC(8): H04L29/08
Inventor 沈玉良张志宏钱岭孙少陵
Owner CHINA MOBILE COMM GRP CO LTD
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