Data storage method and data reading method
A technology of data storage and data reading, applied in the direction of electrical digital data processing, input/output process of data processing, instruments, etc., can solve the problem of low reliability of data storage, and achieve the effect of improving the reliability of data storage
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Embodiment 1
[0030] According to an embodiment of the present invention, an embodiment of a data storage method is provided. It should be noted that the steps shown in the flowcharts of the drawings can be executed in a computer system such as a set of computer-executable instructions, and, although A logical order is shown in the flowcharts, but in some cases the steps shown or described may be performed in an order different from that shown or described herein.
[0031] The method embodiment provided in Embodiment 1 of the present application may be executed in a mobile terminal, a computer terminal, or a similar computing device. figure 1 A hardware structure block diagram of a computer terminal (or mobile device) for realizing the data storage method is shown. Such as figure 1 As shown, the computer terminal 10 (or mobile device 10) may include one or more (only one is shown in the figure) processor 102 (the processor 102 may include but not limited to microprocessor MCU or programmab...
Embodiment 2
[0068] According to an embodiment of the present invention, there is also provided a data reading method, which is applied to reading data from a plurality of stripe groups in any of the above items, such as Figure 4 shown, including:
[0069] Step S41 , determining a reading position of the data to be read, and determining a reading offset based on the reading position.
[0070] Specifically, the data to be read is stored in multiple data nodes of the distributed storage system by using the data storage method in any one of the above embodiments. Determine the read position of the data to be read, that is, to determine where to read data in multiple stripe groups, for example, to determine to read data at the 13k position of multiple stripe groups, then determine the read offset Can be 13k.
[0071] Step S42, calculating the quotient of the read offset and the size of the first storage area of each stripe group, and determining the sequence number of the second target st...
Embodiment 3
[0093] According to an embodiment of the present invention, a device for implementing the above data storage method is also provided, such as Figure 5 As shown, the device includes:
[0094] The first storage unit 51 is configured to sequentially store the data to be stored in the first storage areas of a plurality of stripe groups, and store the verification data of the stored data in each first storage area to the first storage area of the corresponding stripe group. In the two storage areas, the storage space of each stripe group includes the first storage area and the second storage area.
[0095] The second storage unit 52 is configured to use multiple invalid data stores to fill the remaining space when there is remaining space in the first storage area of the first target stripe group among the multiple stripe groups, and store the multiple invalid data The data amount information of the data is stored in the second storage area in the first target stripe group, w...
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