CN109408287B - Data reliability storage and recovery method, system and device - Google Patents
Data reliability storage and recovery method, system and device Download PDFInfo
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- CN109408287B CN109408287B CN201811142227.4A CN201811142227A CN109408287B CN 109408287 B CN109408287 B CN 109408287B CN 201811142227 A CN201811142227 A CN 201811142227A CN 109408287 B CN109408287 B CN 109408287B
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- G06F11/1471—Saving, restoring, recovering or retrying involving logging of persistent data for recovery
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Abstract
The present invention relates to the field of data processing, and in particular, to a method, system, and apparatus for storing and recovering data reliability. The storing and recovering method comprises the following steps: setting a first storage area, a second storage area, a third storage area and a fourth storage area which have the same storage space size and all store the same data information in the data storage area; and performing identity verification on the data information of the first storage area and the second storage area; if the data information of the first storage area is the same as the data information of the second storage area, the data information of the first storage area is subjected to the same verification with the data information of the third storage area or the fourth storage area, and if the data information of the first storage area is different from the data information of the fourth storage area, the data information of the first storage area is copied into the third storage area or the fourth storage area. According to the invention, by ensuring that accidents occur in the data storage process, when the data are different, correct data are recovered according to the data information of the third storage area or the fourth storage area, and the integrity and the correctness of the data are ensured; and improving the reliability and fault tolerance of the system.
Description
Technical Field
The present invention relates to the field of data processing, and in particular, to a method, system, and apparatus for storing and recovering data reliability.
Background
In software systems, it is often necessary to store some important marking data to preserve some important data or the state of the system.
Meanwhile, the size of the marked data is usually smaller but may contain more than one storage unit, but if unexpected situations occur in the data storage process, such as power failure, unexpected termination of the storage process and the like, a part of the stored data is updated, another part of the stored data is not updated, and the data is incomplete.
Disclosure of Invention
The invention aims to solve the technical problems of providing a data reliability storage and recovery method aiming at the defects in the prior art, and solves the problem that data is incomplete in the data storage process.
The invention aims to solve the technical problems of providing a data reliability storage and recovery system aiming at the defects in the prior art, and solves the problem that data is incomplete in the data storage process.
The invention aims to solve the technical problems that a storage device is provided for solving the problems of incomplete data in the data storage process aiming at the defects in the prior art.
The technical scheme adopted for solving the technical problems is as follows: there is provided a storage and recovery method of data reliability, the storage and recovery method comprising the steps of: setting a first storage area, a second storage area, a third storage area and a fourth storage area which have the same storage space size and all store the same data information or blank data in the data storage area; when the data storage area is updated, the data information is updated to the first storage area, the second storage area, the third storage area and the fourth storage area in sequence; and performing identity verification on the data information of the first storage area and the second storage area; if the data information of the first storage area and the second storage area is the same, the data information is used as correct data information, the correct data information is subjected to identity verification with the data information of the third storage area and the fourth storage area, and if the data information is different, the correct data information is copied into the third storage area and the fourth storage area; if the data information of the first storage area is different from the data information of the second storage area, copying the data information of the third storage area or the fourth storage area into the first storage area and the second storage area.
The preferred scheme is that the storing and recovering method further comprises the steps of: when the data information of the first storage area is different from the data information of the second storage area, carrying out the identity verification on the data information of the third storage area and the fourth storage area; if the data information of the third storage area and the fourth storage area are the same, copying the data information of the third storage area or the fourth storage area into the first storage area and the second storage area.
The preferred scheme is that the storing and recovering method further comprises the steps of: taking the same data information stored in the first storage area, the second storage area, the third storage area and the fourth storage area as initial default values; or, taking blank data information as an initial default value; and when the data information of the first storage area and the second storage area are different and the data information of the third storage area and the fourth storage area are different, restoring the first storage area, the second storage area, the third storage area and the fourth storage area to the initial default values.
Among them, the preferred scheme is: the method of the identity verification adopts a byte-by-byte comparison method of the data information.
The preferred scheme is that the storing and recovering method further comprises the steps of: setting a trigger event; and after triggering the triggering event, carrying out identity verification on the data information of the first storage area and the second storage area.
Among them, the preferred scheme is: the triggering event includes a power loss or an unexpected termination of the stored procedure.
The technical scheme adopted for solving the technical problems is as follows: the storage and recovery system comprises a storage unit and a control unit, wherein the storage unit comprises a first storage area, a second storage area, a third storage area and a fourth storage area which are consistent in storage space size and all store the same data information, the control unit comprises a processing module, a verification module, a copy module and a loading module, the verification module, the copy module and the loading module are respectively connected with the processing module, and the processing module stores a control program of the storage and recovery method; the loading module updates the data information into each storage space of the storage unit; the verification module performs identity verification on the data information of any two storage spaces of the storage unit; the copying module copies the data information of one storage space of the storage unit to another storage space.
Among them, the preferred scheme is: the storage and recovery system further comprises an initial default setting module and an initial default recovery module which are connected with the processing module, wherein the initial default setting module takes the same data information stored in the first storage area, the second storage area, the third storage area and the fourth storage area as an initial default or takes blank data information as an initial default; and the initial default value recovery module recovers the first storage area, the second storage area, the third storage area and the fourth storage area to initial default values when the data information of the first storage area and the second storage area is different and the data information of the third storage area and the fourth storage area is also different.
The technical scheme adopted for solving the technical problems is as follows: there is provided a storage device storing a computer program executable to implement the steps of the storage and retrieval method as described.
Compared with the prior art, the invention has the beneficial effects that by designing the storage and recovery method, the system and the storage device for the data reliability, the identity verification is carried out on the data information of the first storage area and the second storage area, so that the situation that accidents occur in the storage process of the data can be ensured, and when the data are different, the correct data can be recovered according to the data information of the third storage area or the fourth storage area, and the integrity and the correctness of the data are ensured; and improving the reliability and fault tolerance of the system.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic flow chart of data update according to the present invention;
FIG. 2 is a flow chart of the storing and recovering method of the present invention;
FIG. 3 is a schematic flow chart of the further identity verification of FIG. 2;
FIG. 4 is a flow chart of the initial default setting of the present invention;
FIG. 5 is a flow chart of the present invention for resetting to an initial default setting after a change;
FIG. 6 is a flow chart of the triggering event of the present invention;
FIG. 7 is a schematic diagram of a storage and retrieval system of the present invention;
FIG. 8 is a schematic diagram of the initial default module of the present invention;
fig. 9 is a schematic structural view of the trigger module of the present invention.
Detailed Description
Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1, 2 and 3, the present invention provides a preferred embodiment of a method for storing and recovering data reliability.
A method for storing and recovering data reliability includes setting the first, the second, the third and the fourth storage areas with identical storage space size and storing the same data information or blank data in the data storage area; wherein, and referring to fig. 1, when the data storage area performs data update, the data information is sequentially updated to the first storage area, the second storage area, the third storage area and the fourth storage area.
The method comprises the following specific steps: step S11, preparing data update; step S12, updating the data information to the first storage area; step S13, updating the data information to the second storage area; step S14, updating the data information to a third storage area; step S15, the data information is updated to the fourth storage area. Until step S15 is completed, this indicates that the updating step is completed. If unexpected situations occur in the data storage process, such as power failure, unexpected termination of the storage process, etc., a part of the stored data is updated, another part of the stored data is not updated, and incomplete situations occur in the data, which can cause the data of the first storage area, the second storage area, the third storage area and the fourth storage area to be different.
Further, through the data updating module, the data updating comprises three operations of inserting, modifying and deleting the data, and the data needing to be updated is updated into the corresponding first storage area, the second storage area, the third storage area and the fourth storage area.
In this embodiment, and referring to fig. 2, the storing and recovering method includes the steps of:
step S21, carrying out identity verification on the data information of the first storage area and the second storage area;
step S221, if the data information of the first storage area is the same as the data information of the second storage area, the data information of the first storage area is verified to be the same as the data information of the third storage area and the fourth storage area;
step S222, if the data information of the first storage area is different, copying the data information of the first storage area into a third storage area and a fourth storage area;
step S23, if the data information of the first storage area and the second storage area are different, the data information of the third storage area or the fourth storage area is copied to the first storage area and the second storage area.
Specifically, first, if an unexpected situation occurs during the data storage process, two situations may be caused, where the data information of the first storage area and the second storage area are different, or the data information of the first storage area and the third storage area or the fourth storage area are different. Therefore, step S21 is first performed, the method of identity verification adopts a byte-by-byte comparison method of data information, and the storage verification of small data is facilitated by a storage and recovery method, so that the update integrity of the data is improved.
If the data information of the first storage area and the second storage area are the same, the data information is used as correct data information, the correct data information is subjected to the identity verification with the data information of the third storage area and the fourth storage area, and if the data information is different, the correct data information is copied into the third storage area and the fourth storage area.
Further, by determining that the step S221 and the step S23 are performed, if the step S221 is performed, at least the data information of the first storage area and the second storage area is proved to be the latest data information, at this time, it is necessary to verify whether the data information of the third storage area and the fourth storage area is the latest data information, and the data information of the third storage area and the fourth storage area may be verified by the identity verification with the data information of the first storage area, or the data information of the third storage area and the fourth storage area may be verified to be the latest data information if the data information of the third storage area and the fourth storage area are identical, and the latest data information of the third storage area and the latest data information of the second storage area may be updated to the third storage area and the fourth storage area.
And if proceeding to step S23, at least the update failure is proved, the data information of the first storage area or the second storage area is erroneous, for example, the first storage area fails to store, for example, the data of the first storage area is up-to-date, but the second storage area fails to store.
In this embodiment, and referring to fig. 3, the storing and recovering method further includes the steps of:
step S21, carrying out identity verification on the data information of the first storage area and the second storage area;
step S231, when the data information of the first storage area and the data information of the second storage area are different, performing identity verification on the data information of the third storage area and the data information of the fourth storage area;
step S232, if the data information of the third storage area and the fourth storage area are the same, copying the data information of the third storage area or the fourth storage area into the first storage area and the second storage area.
Specifically, at this time, in the above step S23, it is also necessary to perform the identity verification on the data information of the third storage area and the fourth storage area, and the data information of the third storage area and the fourth storage area are the same under normal conditions, and the data information of the third storage area or the fourth storage area is copied into the first storage area and the second storage area; if not, the system is considered to be abnormal.
As shown in fig. 4 and 5, the present invention provides a preferred embodiment of initial default setting and recovery data.
The storing and recovering method further comprises the steps of:
step S411, the same data information stored in the first storage area, the second storage area, the third storage area and the fourth storage area is used as an initial default value;
step S412, taking the blank data information as an initial default value;
and S42, restoring the first storage area, the second storage area, the third storage area and the fourth storage area to initial default values when the data information of the first storage area and the second storage area are different and the data information of the third storage area and the fourth storage area are different.
Specifically, when the data information of the first storage area and the second storage area are different, the data information of the third storage area and the fourth storage area are subjected to the same verification, if the data information of the third storage area and the fourth storage area are different, the system is considered to be abnormal, and the first storage area, the second storage area, the third storage area and the fourth storage area are all restored to the initial default values.
Further, and referring to fig. 5, the storing and recovering method further includes the steps of:
step S51, the same data information stored in the first storage area, the second storage area, the third storage area and the fourth storage area is used as an initial default value;
step S52, and resetting the new initial default value after the data information of the first, second, third, and fourth memory areas is changed.
In general, during each update, whether an error occurs or not, data information in the first storage area, the second storage area, the third storage area and the fourth storage area is detected, if the update fails, the data is updated through a storage and recovery method, if the update succeeds, an initial default value is set on the side, and if the update succeeds, the initial default value set last time is updated to the first storage area, the second storage area, the third storage area and the fourth storage area.
Further, a new memory area, such as a fifth memory area, may be set for storing the initial default value.
As shown in FIG. 6, the present invention provides a preferred embodiment of trigger event setting and response.
The storing and recovering method further comprises the steps of:
step S61, setting a trigger event;
and step S62, after triggering the triggering event, carrying out identity verification on the data information of the first storage area and the second storage area.
In this embodiment, the triggering event includes a power loss or an unexpected termination of the stored procedure.
Specifically, compared with the above-mentioned process of updating each time, whether an error occurs or not, the data information in the first storage area, the second storage area, the third storage area and the fourth storage area is detected, and the detection is triggered by the triggering event, so that the complexity of data operation is reduced.
As shown in fig. 7, 8 and 9, the present invention provides a preferred embodiment of a data reliability storage and retrieval system.
A storage and restoration system of data reliability, the storage and restoration system comprising a storage unit and a control unit 100, the storage unit comprising a first storage area 210, a second storage area 220, a third storage area 230 and a fourth storage area 240, which have identical storage space sizes and all have stored the same data information, the control unit 100 comprising a processing module 110, and a verification module 130, a copy module 120 and a loading module 140 respectively connected to the processing module 110, the processing module 110 storing a control program as in the above storage and restoration method; wherein, the loading module 140 updates the data information to each storage space of the storage unit; the verification module 130 performs identity verification on the data information of any two storage spaces of the storage unit; the copy module 120 copies data information of one storage space of the storage unit to another storage space.
Specifically, when the processing module 110 detects external update data, the external update data is sequentially updated to the first storage area 210, the second storage area 220, the third storage area 230, and the fourth storage area 240 through the loading module 140; and, after the update is completed or after the exception is sent, the processing module 110 performs the identity verification on the data information of the first storage area 210 and the second storage area 220 through the verification module 130, and if the data information of the first storage area 210 and the second storage area 220 is the same, the processing module 110 performs the identity verification on the data information of the first storage area 210 and the third storage area 230 or the fourth storage area 240 through the verification module 130; and, if different, the processing module 110 copies the data information of the first storage area 210 to the third storage area 230 or the fourth storage area 240 through the copying module 120; if the data information of the first storage area 210 and the second storage area 220 are different, the processing module 110 copies the data information of the third storage area 230 or the fourth storage area 240 to the first storage area 210 and the second storage area 220 through the copy module 120.
In this embodiment, and referring to fig. 8, the storage and recovery system further includes an initial default setting module 150 and an initial default recovery module 160, both of which are connected to the processing module 110, where the initial default setting module 150 uses the same data information already stored in the first storage area 210, the second storage area 220, the third storage area 230, and the fourth storage area 240 as an initial default, or uses blank data information as an initial default; and, the initial default value restoring module 160 restores the first, second, third and fourth memory areas 210, 220, 230 and 240 to the initial default value when the data information of the third and fourth memory areas 230 and 240 are not identical.
Further, the control unit 100 is preferably a central processing unit, which is a very large scale integrated circuit, is an operation core and a control core of a computer, and has the functions of mainly interpreting computer instructions and processing data in computer software; the CPU mainly includes an operator and a cache memory and a bus for realizing the data, control and status of the connection between them. It is known as three major core components of an electronic computer together with internal memory and input/output devices.
In this embodiment, and referring to fig. 9, the storage and recovery system includes a trigger module 170 connected to the processing module 110, where the trigger module 170 sets a trigger event and sends a trigger command to the processing module 110 after triggering the trigger event, and the processing module 110 controls the verification module 130 to perform identity verification on the data information of the first storage area 210 and the second storage area 220 according to the trigger command.
In the present invention, a preferred embodiment of a memory device is provided.
A storage device storing a computer program executable to implement the steps of the storage and retrieval method.
The foregoing description of the preferred embodiments of the present invention is not intended to limit the scope of the invention, but rather is intended to cover all modifications and variations within the scope of the present invention as defined in the appended claims.
Claims (8)
1. A method for storing and recovering data reliability, the method comprising the steps of:
setting a first storage area, a second storage area, a third storage area and a fourth storage area which have the same storage space size and all store the same data information or blank data in the data storage area; when the data storage area is updated, the data information is updated to the first storage area, the second storage area, the third storage area and the fourth storage area in sequence;
and performing identity verification on the data information of the first storage area and the second storage area;
if the data information of the first storage area and the second storage area is the same, the data information is used as correct data information, the correct data information is subjected to identity verification with the data information of the third storage area and the fourth storage area, and if the data information is different, the correct data information is copied into the third storage area and the fourth storage area;
if the data information of the first storage area is different from the data information of the second storage area, carrying out identity verification on the data information of the third storage area and the fourth storage area;
if the data information of the third storage area and the fourth storage area are the same, copying the data information of the third storage area or the fourth storage area into the first storage area and the second storage area.
2. The storage and retrieval method of claim 1, wherein the storage and retrieval method further comprises the steps of:
taking the same data information stored in the first storage area, the second storage area, the third storage area and the fourth storage area as initial default values; or, taking blank data information as an initial default value;
and when the data information of the first storage area and the second storage area are different and the data information of the third storage area and the fourth storage area are different, restoring the first storage area, the second storage area, the third storage area and the fourth storage area to the initial default values.
3. A storage and retrieval method according to any one of claims 1 to 2, wherein: the method of the identity verification adopts a byte-by-byte comparison method of the data information.
4. A storage and retrieval method according to any one of claims 1 to 2, wherein said storage and retrieval method further comprises the steps of:
setting a trigger event;
and after triggering the triggering event, carrying out identity verification on the data information of the first storage area and the second storage area.
5. The storage and retrieval method of claim 4, wherein: the triggering event includes a power loss or an unexpected termination of the stored procedure.
6. A data reliability storage and retrieval system, characterized by: the storage and recovery system comprises a storage unit and a control unit, wherein the storage unit comprises a first storage area, a second storage area, a third storage area and a fourth storage area which are consistent in storage space size and all store the same data information, the control unit comprises a processing module, a verification module, a copy module and a loading module, the verification module, the copy module and the loading module are respectively connected with the processing module, and the processing module stores a control program of the storage and recovery method according to any one of claims 1-5; wherein, the liquid crystal display device comprises a liquid crystal display device,
the loading module updates the data information into each storage space of the storage unit; the verification module performs identity verification on the data information of any two storage spaces of the storage unit; the copying module copies the data information of one storage space of the storage unit to another storage space.
7. The storage and retrieval system of claim 6, wherein: the storage and recovery system further comprises an initial default setting module and an initial default recovery module which are connected with the processing module, wherein the initial default setting module takes the same data information stored in the first storage area, the second storage area, the third storage area and the fourth storage area as an initial default or takes blank data information as an initial default; and the initial default value recovery module recovers the first storage area, the second storage area, the third storage area and the fourth storage area to initial default values when the data information of the first storage area and the second storage area is different and the data information of the third storage area and the fourth storage area is also different.
8. A memory device, characterized by: the storage means stores a computer program executable to implement the steps of the storage and retrieval method according to any one of claims 1 to 5.
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| JP2013186619A (en) * | 2012-03-07 | 2013-09-19 | Sony Corp | Information processor, information processing method and program |
| GB201312215D0 (en) * | 2013-07-08 | 2013-08-21 | Pace Plc | Broadcast data apparatus and method |
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