CN106648963A - Method and system for recovering data synchronous backup - Google Patents
Method and system for recovering data synchronous backup Download PDFInfo
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- CN106648963A CN106648963A CN201610887542.4A CN201610887542A CN106648963A CN 106648963 A CN106648963 A CN 106648963A CN 201610887542 A CN201610887542 A CN 201610887542A CN 106648963 A CN106648963 A CN 106648963A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1446—Point-in-time backing up or restoration of persistent data
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Abstract
The invention provides a method for recovering data synchronous backup. The method includes the steps that after a first device faults and is restarted, all data files required to be subjected to data backup of the first device and data files conducting video storage of a second device are determined; for all the data files required to be subjected to data backup of the first device, based on judgment results of all the data files, the first device is controlled to conduct data backup operation corresponding to the judgment results to complete backup of all the data files, and the consistency of video data storage in the first device and the second device is guaranteed; for the data files conducting video storage of the second device, when the data files are completely stored, the first device is controlled, the first device and the second device are simultaneously switched to the next data file for video storage to recover the normal synchronous storage state of the first device, the second device conducting video storage cannot be required to be interrupted accordingly, and the real-time performance of video storage is guaranteed.
Description
Technical field
The present invention relates to technical field of data storage, is to be related to a kind of side of recovery data syn-chronization backup in particular
Method and system.
Background technology
At present, Video Storage System typically carries out video storage using two-node cluster hot backup technology, and two-node cluster hot backup is to be
Two equipment are used during system operation, the data file of each self-configuring of two equipment is identical, wherein two equipment pair
Answer and identical data file is used for synchronously receiving and store identical video data, whenever two equipment storage completely data
After file, backed up immediately, i.e., two equipment compare two numbers as standard, in order with the respective video data for storing respectively
According to the video data that document memory is stored up, the video data that two data files are each lacked is determined, mutually transmission is lacked each other
Video data, to ensure that the video data of two device data document memory storages is identical, while two equipment are switched to down
One data file then carries out video storage.
In the Video Storage System based on two-node cluster hot backup, the feelings of a wherein device fails are occurred unavoidably
Condition, when wherein one equipment is the first device fails, then two equipment can stop two-node cluster hot backup, and the second equipment connects
Carries out video storage, and after the first equipment for breaking down restarts, the video data that two equipment is each stored will go out
Existing inconsistent and nonsynchronous problem, generally requires and interrupts the second equipment for carrying out video storage, with for breaking down
One equipment completes to be not backed up after the backup again of data file, then recover simultaneously the normal video of two equipment synchronously storage with it is standby
Part, but take this measure, it is impossible to guarantee the real-time that video is stored.
The content of the invention
The technical problem to be solved is to provide a kind of method of recovery data syn-chronization backup, so that first sets
It is standby to carry out the second equipment of video storage without the need for interruption after failure is restarted, realize and the storage of the second equipment video data
Uniformity and with the second equipment video storage it is synchronous, it is ensured that video storage real-time.
The present invention also provides a kind of system of recovery data syn-chronization backup, to ensure said method realization in practice
And application.
A kind of method for recovering data syn-chronization backup, including：
It is after the first equipment fault is restarted, the first equipment and the second equipment is each self-recording current with regard to data file
Status information is compared, and determines that the first equipment needs to carry out each data file of data backup, and the second equipment is
Carry out the data file of video storage；
The equipment of real-time monitoring second is carrying out the data file state of video storage；For the first equipment, any one is needed
The data file of data backup is carried out, judges that the data file whether there is and when the data file exists in the first equipment
In the presence of in first equipment, the data file is in the corresponding initial recording time of the second equipment and the data file in the first equipment
Whether the difference of corresponding initial recording time is more than default threshold value；
When the data file storage that the second equipment is carrying out video storage is completed, the first equipment of control is simultaneously with second
Equipment is switched to next data file and carries out video storage, to recover the normal synchronization storage state of the first equipment；When first
When equipment needs to carry out the data file of data backup and all judges to complete, based on judged result, the first equipment of control perform with
The corresponding data backup operation of the judged result.
Above-mentioned method, it is preferred that described based on judged result, the first equipment of control performs relative with the judged result
The data backup operation answered includes：
For any one needs to carry out the data file of data backup, at the beginning of the data file is corresponding in the second equipment
Record time beginning and the data file when the difference of the corresponding initial recording time of the first equipment is more than default threshold value, control
First equipment to the second equipment sends the instruction of the first data acquisition, to obtain the second equipment in the video that stored of the data file
Data carry out covering backup.
Above-mentioned method, it is preferred that described based on judged result, the first equipment of control performs relative with the judged result
The data backup operation answered includes：
For any one needs to carry out the data file of data backup, at the beginning of the data file is corresponding in the second equipment
Record time beginning and the data file judge when the difference of the corresponding initial recording time of the first equipment is less than default threshold value
The video data of the data file memory storage whether there is distortion data in first equipment；
When the video data of the data file memory storage in the first equipment does not have distortion data, then with the second equipment
The video data of the data file storage is standard, and the video data that the data file in the first equipment is stored sets with second
The video data that the data file is stored in standby is compared, and determines what is lacked in the corresponding data file of the first equipment
Video data；Control the first equipment and send the instruction of the second data acquisition to the second equipment, to obtain the first equipment in data text
The video data lacked in part is backed up；
When the video data of the data file memory storage in the first equipment has distortion data, then by the distortion data
Delete, the video data of the data file storage is stored the data file in the first equipment as standard with the second equipment
The video data that stored with the data file in the second equipment of video data compare, determining that the first equipment is corresponding should
The video data lacked in data file；Control the first equipment and send the instruction of the 3rd data acquisition to the second equipment, to obtain
The video data lacked in the data file in first equipment is backed up.
Above-mentioned method, it is preferred that described based on judged result, the first equipment of control performs relative with the judged result
The data backup operation answered includes：
For any one needs to carry out the data file of data backup, when the data file does not exist in the first equipment
When, control the first equipment to the second equipment send the 4th data acquisition instruction, to obtain the second equipment in the data file deposited
The video data of storage carries out covering backup.
Above-mentioned method, it is preferred that also include：
When the first equipment is switched to next data file with the second equipment carries out video storage simultaneously, control first sets
It is standby to send the instruction of the 5th data acquisition to the second equipment, to obtain the video data in the data file that the second equipment has just been stored
Carry out covering backup.
A kind of system for recovering data syn-chronization backup, including：
Determining unit, for after the first equipment fault is restarted, by the first equipment and the second equipment it is each it is self-recording with regard to
The current status information of data file is compared, and determines that the first equipment needs to carry out each data file of data backup, with
And second equipment carrying out the data file of video storage；
Monitoring judging unit, for the data file state that the equipment of real-time monitoring second is carrying out video storage；For
Any one needs to carry out the data file of data backup first equipment, judges that the data file whether there is in the first equipment
And in the presence of the data file is in the first equipment, the data file is in the corresponding initial recording time of the second equipment and is somebody's turn to do
Whether data file is more than default threshold value in the difference of the corresponding initial recording time of the first equipment；
Control unit, when the data file storage for carrying out video storage when the second equipment is completed, control first
Simultaneously be switched to next data file with the second equipment carries out video storage to equipment, is normally synchronously deposited with recovering the first equipment
Storage state；When the data file that the first equipment needs to carry out data backup all judges to complete, based on judged result, control the
One equipment performs the data backup operation corresponding with the judged result.
Above-mentioned system, it is preferred that control unit includes：
First control subelement, for needing to carry out the data file of data backup for any one, when data text
Part the corresponding initial recording time of the second equipment and the data file the corresponding initial recording time of the first equipment difference
During more than default threshold value, control the first equipment to the second equipment send the first data acquisition instruction, to obtain the second equipment in
The video data that the data file is stored carries out covering backup.
Above-mentioned system, it is preferred that described control unit includes：
Judgment sub-unit, for needing to carry out the data file of data backup for any one, when the data file exists
The corresponding initial recording time of second equipment and the data file are less than in the difference of the corresponding initial recording time of the first equipment
During default threshold value, the video data for judging the data file memory storage in the first equipment whether there is distortion data；
, there is no distortion for working as the video data of the data file memory storage in the first equipment in the second control subelement
According to when, then the video data of data file storage, as standard, the data file in the first equipment is deposited with the second equipment
The video data that the video data of storage is stored with the data file in the second equipment is compared, and determines the number in the first equipment
According to the video data lacked in file；Control the first equipment and send the instruction of the second data acquisition to the second equipment, to obtain the
The video data lacked in the data file in one equipment is backed up；
, there is distortion data for working as the video data of the data file memory storage in the first equipment in the 3rd control subelement
When, then the distortion data is deleted, with the second equipment the video data of data file storage as standard, by the first equipment
In the video data that stored with the data file in the second equipment of the video data that stored of the data file compare, really
The video data lacked in the corresponding data file of fixed first equipment；Control the first equipment and send the 3rd number to the second equipment
According to instruction is obtained, obtain the video data lacked in the data file in the first equipment and backed up.
Above-mentioned system, it is preferred that described control unit includes：
4th control subelement, for needing to carry out the data file of data backup for any one, when data text
When part does not exist in the first equipment, the first equipment of control to the second equipment sends the instruction of the 4th data acquisition, to obtain second
The video data that the data file is stored in equipment carries out covering backup.
Above-mentioned system, it is preferred that also include：
Acquiring unit, for simultaneously being switched to next data file with the second equipment to carry out video storage when the first equipment
When, the first equipment of control to the second equipment sends the instruction of the 5th data acquisition, and to obtain the second equipment the data for completing just have been stored
Video data in file carries out covering backup.
Compared with prior art, the present invention includes advantages below：
The present invention provides a kind of method for recovering data syn-chronization backup, including：After the first equipment fault is restarted, is determined
One equipment needs each data file for carrying out data backup, and the second equipment carrying out the data file of video storage；
For the first equipment needs to carry out each data file of data backup, based on the judged result to each data file, control
Make the first equipment and perform the data backup operation corresponding with the judged result, to complete to the standby of each data file
Part, it is ensured that the uniformity of video data storage in the first equipment and the second equipment；For the second equipment is carrying out video storage
Data file, when the data file storage is completed, the first equipment of control is switched to next data with the second equipment simultaneously
File carries out video storage, to recover the normal synchronization storage state of the first equipment, so as to after the first equipment fault is restarted, and can
So that the second equipment of ongoing video storage need not be interrupted, realize uniformity with the storage of the second equipment video data and
It is synchronous with the storage of the second equipment video, it is ensured that the real-time of video storage.
Certainly, the arbitrary product for implementing the present invention it is not absolutely required to while reaching all the above advantage.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can be with basis
The accompanying drawing of offer obtains other accompanying drawings.
A kind of method flow diagram of recovery data syn-chronization backup method that Fig. 1 is provided for the present invention；
A kind of structural representation of recovery data syn-chronization standby system that Fig. 2 is provided for the present invention；
A kind of another structural representation of recovery data syn-chronization standby system that Fig. 3 is provided for the present invention；
A kind of structural representation of Video Storage System based on two-node cluster hot backup that Fig. 4 is provided for the present invention；
A kind of flow process of Video Storage System failure method for restarting based on two-node cluster hot backup that Fig. 5 is provided for the present invention is shown
It is intended to；
Fig. 6 is not backed up the method flow diagram of file for a kind of synchronization that the present invention is provided；
The method flow diagram that Fig. 7 is just being stored for a kind of synchronization that the present invention is provided in video.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
With reference to Fig. 1, show a kind of method for recovering data syn-chronization backup provided in an embodiment of the present invention, this method is held
Row main body can be the first equipment；Methods described includes：
Step S101：It is after the first equipment fault is restarted, the first equipment and the second equipment is each self-recording with regard to data
The current status information of file is compared, and determines that the first equipment needs to carry out each data file of data backup, Yi Ji
Two equipment are carrying out the data file of video storage；
In the method that the present invention is provided, after the first equipment fault is restarted, the first equipment and the second equipment are each remembered
The status information current with regard to data file of record is compared, and determines that the first equipment needs to carry out each data of data backup
File, and the second equipment carrying out the data file of video storage；Wherein, the current status information of data file can be wrapped
Include：Storage state and Status of Backups etc., storage state can be to store, do not store or store；Status of Backups can be with
To back up, being not backed up or backing up；First equipment needs to carry out each data file of data backup can include the
One equipment does not complete the file of data backup when failure occurs and does not carry out relative to the second equipment during failure occurs
The data file of video storage.
For example, after the first equipment fault is restarted, the data file status information of its record is：
Data file 1, stores, is not backed up；Data file 2, stores, backs up；Data file 3, stores,
It is not backed up.
Second equipment record data file status information be：
Data file 1, stores, is not backed up；Data file 2, stores, backs up；Data file 3, stores, not
Backup；Data file 4, stores, is not backed up；Data file 5, stores, and is not backed up.
Then by comparing the first equipment and each self-recording data file status information of the second equipment, it may be determined that data text
Part 1, data file 2, data file 3, data file 4 need to carry out the file of data backup, wherein data text for the first equipment
Part 1, data file 2, data file 3 are the file that the first equipment does not complete data backup when failure occurs, and data file 4 is
First equipment does not carry out the data file of video storage during failure generation relative to the second equipment；And can determine data
File 5 is the data file that the second equipment is carrying out video storage.
Step S102：The equipment of real-time monitoring second is carrying out the data file state of video storage；For the first equipment
Any one needs the data file for carrying out data backup, judges that the data file whether there is in the first equipment and work as and is somebody's turn to do
In the presence of data file is in the first equipment, the data file is in the corresponding initial recording time of the second equipment and the data file
Whether it is more than default threshold value in the difference of the corresponding initial recording time of the first equipment；
In the present invention, whether the equipment of real-time monitoring second is carrying out the data file of video storage and stores and complete；It is right
In the first equipment, any one needs the data file for carrying out data backup, judges whether the data file deposits in the first equipment
When not existing, representing that the data file is the data file that the first equipment does not carry out video storage during failure, then directly
Obtain and take the video data that the data file is stored in the second equipment and carry out covering backup；When the data file is in the first equipment
In in the presence of, judge that the data file is corresponding in the first equipment with the data file in the corresponding initial recording time of the second equipment
The difference of initial recording time whether be more than default threshold value, if being more than default threshold value, then it represents that the first equipment occur therefore
The time of barrier is long, then the video data that the data file is stored in the equipment of direct access second carries out covering backup；If
Less than default threshold value, it is determined that the video data that the data file is not received during failure in the first equipment, and from second
Equipment obtains the video data not received and is backed up.
Step S103：When the data file storage that the second equipment is carrying out video storage is completed, the first equipment is controlled
Simultaneously being switched to next data file with the second equipment carries out video storage, and to recover the first equipment shape is normally synchronously stored
State；When the first equipment needs the data file for carrying out data backup all to judge to complete, based on judged result, control first sets
It is standby to perform the data backup operation corresponding with the judged result.
The recovery data syn-chronization backup method provided by the application present invention, after the first equipment fault is restarted, determines the
One equipment needs each data file for carrying out data backup, and the second equipment carrying out the data file of video storage；
For the first equipment needs to carry out each data file of data backup, based on the judged result to each data file, control
Make the first equipment and perform the data backup operation corresponding with the judged result, to complete to the standby of each data file
Part, it is ensured that the uniformity of video data storage in the first equipment and the second equipment；For the second equipment is carrying out video storage
Data file, when the data file storage is completed, the first equipment of control is switched to next data with the second equipment simultaneously
File carries out video storage, to recover the normal synchronization storage state of the first equipment, so as to after the first equipment fault is restarted, and can
So that the second equipment of ongoing video storage need not be interrupted, realize uniformity with the storage of the second equipment video data and
It is synchronous with the storage of the second equipment video, it is ensured that the real-time of video storage.
In the method that the present invention is provided, described based on judged result, the first equipment of control is performed and the judged result
Corresponding data backup operation includes：
For any one needs to carry out the data file of data backup, at the beginning of the data file is corresponding in the second equipment
Record time beginning and the data file when the difference of the corresponding initial recording time of the first equipment is more than default threshold value, control
First equipment to the second equipment sends the instruction of the first data acquisition, to obtain the second equipment in the video that stored of the data file
Data carry out covering backup.
In the method that the present invention is provided, described based on judged result, the first equipment of control is performed and the judged result
Corresponding data backup operation includes：
For any one needs to carry out the data file of data backup, at the beginning of the data file is corresponding in the second equipment
Record time beginning and the data file judge when the difference of the corresponding initial recording time of the first equipment is less than default threshold value
The video data of the data file memory storage whether there is distortion data in first equipment；
When the video data of the data file memory storage in the first equipment does not have distortion data, then with the second equipment
The video data of the data file storage is standard, and the video data that the data file in the first equipment is stored sets with second
The video data that the data file is stored in standby is compared, and determines what is lacked in the corresponding data file of the first equipment
Video data；Control the first equipment and send the instruction of the second data acquisition to the second equipment, to obtain the first equipment in data text
The video data lacked in part is backed up；
When the video data of the data file memory storage in the first equipment has distortion data, then by the distortion data
Delete, the video data of the data file storage is stored the data file in the first equipment as standard with the second equipment
The video data that stored with the data file in the second equipment of video data compare, determining that the first equipment is corresponding should
The video data lacked in data file；Control the first equipment and send the instruction of the 3rd data acquisition to the second equipment, to obtain
The video data lacked in the data file in first equipment is backed up.
In the method that the present invention is provided, described based on judged result, the first equipment of control is performed and the judged result
Corresponding data backup operation includes：
For any one needs to carry out the data file of data backup, when the data file does not exist in the first equipment
When, control the first equipment to the second equipment send the 4th data acquisition instruction, to obtain the second equipment in the data file deposited
The video data of storage carries out covering backup.
In the method that the present invention is provided, also include：
When the first equipment is switched to next data file with the second equipment carries out video storage simultaneously, control first sets
It is standby to send the instruction of the 5th data acquisition to the second equipment, to obtain the video data in the data file that the second equipment has just been stored
Carry out covering backup.
Corresponding with Fig. 1 methods describeds, present invention also offers a kind of recover data syn-chronization standby system, its structure is shown
It is intended to as shown in Fig. 2 the system includes：
Determining unit 201, for after the first equipment fault is restarted, by the first equipment and each self-recording pass of the second equipment
It is compared in the current status information of data file, determines that the first equipment needs to carry out each data file of data backup,
And second equipment carrying out the data file of video storage；
Monitoring judging unit 202, for the data file state that the equipment of real-time monitoring second is carrying out video storage；It is right
In the first equipment, any one needs the data file for carrying out data backup, judges whether the data file deposits in the first equipment
And when the data file in the first equipment in the presence of, the data file the corresponding initial recording time of the second equipment with
Whether the data file is more than default threshold value in the difference of the corresponding initial recording time of the first equipment；
Control unit 203, when the data file storage for carrying out video storage when the second equipment is completed, control the
Simultaneously be switched to next data file with the second equipment carries out video storage to one equipment, normally synchronous to recover the first equipment
Storage state；When the first equipment needs the data file for carrying out data backup all to judge to complete, based on judged result, control
First equipment performs the data backup operation corresponding with the judged result.
The recovery data syn-chronization backup method provided by the application present invention, after the first equipment fault is restarted, determines the
One equipment needs each data file for carrying out data backup, and the second equipment carrying out the data file of video storage；
For the first equipment needs to carry out each data file of data backup, based on the judged result to each data file, control
Make the first equipment and perform the data backup operation corresponding with the judged result, to complete to the standby of each data file
Part, it is ensured that the uniformity of video data storage in the first equipment and the second equipment；For the second equipment is carrying out video storage
Data file, when the data file storage is completed, the first equipment of control is switched to next data with the second equipment simultaneously
File carries out video storage, to recover the normal synchronization storage state of the first equipment.
Fig. 3 shows the another structural representation for recovering data syn-chronization backup of present invention offer, described control unit 203
Including：
First control subelement 2031, for needing to carry out the data file of data backup for any one, when the number
According to file in the corresponding initial recording time of the second equipment and the data file in the corresponding initial recording time of the first equipment
When difference is more than default threshold value, the first equipment of control to the second equipment sends the instruction of the first data acquisition, is set with obtaining second
The video data that the data file is stored in standby carries out covering backup.
Specifically, described control unit 203 includes：
Judgment sub-unit 2032, for needing to carry out the data file of data backup for any one, when data text
Part the corresponding initial recording time of the second equipment and the data file the corresponding initial recording time of the first equipment difference
During less than default threshold value, the video data for judging the data file memory storage in the first equipment whether there is distortion data；
, there is no mistake for working as the video data of the data file memory storage in the first equipment in the second control subelement 2033
During true data, then with the second equipment the video data of data file storage as standard, by the data file in the first equipment
The video data that the video data for being stored is stored with the data file in the second equipment is compared, in determining the first equipment
The video data lacked in the data file；Control the first equipment and send the instruction of the second data acquisition to the second equipment, to obtain
Take the video data lacked in the data file in the first equipment to be backed up；
, there is distortion for working as the video data of the data file memory storage in the first equipment in the 3rd control subelement 2034
During data, then the distortion data is deleted, with the second equipment the video data of data file storage as standard, by first
The video data that the video data that the data file is stored in equipment is stored with the data file in the second equipment is compared
It is right, determine the video data lacked in the corresponding data file of the first equipment；Control the first equipment to send to the second equipment
3rd data acquisition is instructed, and is obtained the video data lacked in the data file in the first equipment and is backed up.
Specifically, described control unit 203 includes：
4th control subelement 2035, for needing to carry out the data file of data backup for any one, when the number
When not existing in the first equipment according to file, the first equipment of control to the second equipment sends the instruction of the 4th data acquisition, to obtain
The video data that the data file is stored in second equipment carries out covering backup.
Accordingly, the system also includes：
Acquiring unit 204, for simultaneously being switched to next data file with the second equipment to carry out video when the first equipment
During storage, the first equipment of control to the second equipment sends the instruction of the 5th data acquisition, to obtain what the just storage of the second equipment was completed
Video data in data file carries out covering backup.
With reference to Fig. 4, the structural representation of the Video Storage System based on two-node cluster hot backup of present invention offer is shown.
Wherein, two-shipper realizes Hot Spare each other, and all software and hardware configuration all sames of two equipment are (including the text of data file
Part name), and while receiving same video source carries out real-time video storage.Wherein,
(1) video adopts regular length document storage mode, frame of video to store in the data file, video frame information storage
In indexed file, data file information is present in general act table.
" general act table " interior information is stored with the form of regular length, including：" data file path ", " index data text
Part path ", " record time started ", " record end time ", " data record size ", " index record size ", " file
Using mark " (0 represent be not used, 1 represent be currently in use, 2 represent use), " backup mark " (0 represent be not backed up, 1 represents
Back up, 2 represent back up) etc. 8 elementary fields.
(2) in the case of normal, two equipment are by carrying out video storage and common dual-locomotive heat under " video storage modules "
Backup.
(3) letter A is used, B is distinguishing the relevant software and hardware configuration (including the filename of data file) of two equipment.
With reference to Fig. 5, a kind of Video Storage System failure side of restarting based on two-node cluster hot backup of present invention offer is shown
The schematic flow sheet of method.
Step S501：After equipment B is restarted, start " synchronization module B ", search " general act table " in " be currently in use, it is not standby
The information of part " file, " use, backing up " file and " use, be not backed up " file, and generate " erropr message list B "
It is sent to device A.
" erropr message list " interior information is stored with the form of regular length, including：" Data Filename ", " data file road
Footpath ", " record time started ", " record end time ", " file uses mark " (0 represent be not used, 1 represent be currently in use, 2
Expression is used), " backup mark " (0 represent be not backed up, 1 represents and backs up, 2 represent back up) etc. 6 elementary fields.
In this example, it is assumed that " erropr message list B " is as shown in table 1.
The erropr message list B of table 1
Step S502：Device A is received after " erropr message list B ", is started " synchronization module A ", is generated " error message Table A " and is sent out
It is sent to equipment B.
In this example, it is assumed that " error message Table A " is as shown in table 2.
The error message Table A of table 2
Step S503：Equipment B is received after " error message Table A ", and device A, B proceed by synchronization.
Step S504：The data text that device A, B are not backed up by " being synchronously not backed up file module " backup during failure
Part；Device A, B are by " synchronous just in storage file module " synchronous ongoing video storage.
Step S505：When device A, " being synchronously not backed up module " of B, " synchronous currently stored file module " are using simultaneously
Stop, synchronously completing, failure is restarted and completed, device A, B continue normal video storage and common two-node cluster hot backup.
With reference to Fig. 6, a kind of synchronization for showing present invention offer is not backed up the method flow diagram of file, including：
Step S601：Device A contrasts " error message Table A " and " erropr message list B ", searches in " general act Table A " "
Using, be not backed up " file, " use, backing up " file and " use, be not backed up " file information, generation " is backed up
File information table ", and it is sent to equipment B.
" being backed up file information table " interior information is stored with the form of regular length, including：" Data Filename ", " data
File is in the path of device A ", " data file is in the path of equipment B ", " action type " (0 represent normal backup, 1 represent cover
Backup, 2 represent remove do not complete frame after normal backup) etc. 4 elementary fields.
Wherein, the generating process for being backed up file information table is as follows：
The data message of " using, be not backed up " in read error information Table A in order, it is assumed that the information sensing equipment
Data file A of A, it is further assumed that data file A corresponding file in erropr message list B is data file B.
If there is no data file B in erropr message list B, the letter of " being backed up file information table " interpolation data file
Breath, wherein " action type " is " covering backup ".
In this example, as table 2 the 4th row data file " 1 ", " being backed up file information table " information of generation is
| Data Filename | Data file is in the path of device A | Data file is in the path of equipment B | Action type |
| 4 | D:\4.txt | D:\4.txt | 1 |
If there is data file B in erropr message list B,
(1) if data file A is less than threshold value, and data file B with the difference of the beginning video time of data file B
For " using, be not backed up ", then " file information table is backed up " and adds the information of the data file, wherein " action type " is
" normal backup ".
In this example, as table 1 the 3rd row and table 2 the 3rd row data file " 3 ", generation " be backed up file letter
Information is breath table "
| Data Filename | Data file is in the path of device A | Data file is in the path of equipment B | Action type |
| 3 | D:\3.txt | D:\3.txt | 0 |
(2) if data file A is less than threshold value, and data file B with the difference of the beginning video time of data file B
State be " do not complete, be not backed up " or " complete, backing up ", then " be backed up file information table " and add data text
The information of part B, wherein " action type " is " remove and do not complete normal backup after frame information ".
In this example, such as table 1 the 1st, the 1st of 2 rows and table 2 the, the data file " 1 " of 2 rows, " 2 ", generation " needs standby
Part file information table " information is
| Data Filename | Data file is in the path of device A | Data file is in the path of equipment B | Action type |
| 1 | D:\1.txt | D:\1.txt | 2 |
| 2 | D:\2.txt | D:\2.txt | 2 |
(3) if data file A is more than threshold value with the difference of the beginning video time of data file B, " it is backed up file
Information table " adds the information of the data file, wherein " action type " is " covering ".
In this example, as table 1 the 4th row and table 2 the 5th row data file " 5 ", it is assumed that threshold value be " 00:00:
10 ", then " being backed up file information table " information for generating is
| Data Filename | Data file is in the path of device A | Data file is in the path of equipment B | Action type |
| 5 | D:\5.txt | D:\5.txt | 1 |
In this example, " being backed up file information table " for ultimately generating is as shown in table 3：
Table 3 is backed up file information table
| Data Filename | Data file is in the path of device A | Data file is in the path of equipment B | Action type |
| 1 | D:\1.txt | D:\1.txt | 2 |
| 2 | D:\2.txt | D:\2.txt | 2 |
| 3 | D:\3.txt | D:\3.txt | 0 |
| 4 | D:\4.txt | D:\4.txt | 1 |
| 5 | D:\5.txt | D:\5.txt | 1 |
Step S602：Equipment B is received after " being backed up file information table ", and device A, B proceed by the data being not backed up
The synchronization of file.
Step S603：Device A, B send in order Backup Data or backup number according to " being backed up file information table "
According to.
In step S603, the information of " being backed up file information table " is read in order, obtain " Data Filename ", " number
According to file in the path of device A ", " data file is in the path of equipment B ", the information such as " action type ".If action type is
" normal backup ", the i.e. data file to pointing to carry out the operation of the common two-node cluster hot backup of " video storage modules "；If behaviour
It is " covering backup " as type, directly the content of the data file of sensing equipment A is covered the data file of sensing equipment B；
If action type is " remove and do not complete normal backup after frame ", i.e., first delete not completing in the data file of sensing equipment B
Frame, then carries out again the operation of the common two-node cluster hot backup of " video storage modules ".
Step S604：Synchronous " being not backed up file " completes, and terminates device A, " being synchronously not backed up file module " of B, terminates.
With reference to Fig. 7, show a kind of synchronization of present invention offer just in the method flow diagram of video storage, the method bag
Include：
Step S701：Equipment B obtains the data text of " be currently in use, be not backed up " of device A according to " error message Table A "
The information of part (hypothesis is data file A), to the corresponding data files of equipment B (hypothesis is data file B) video storage is carried out.
Step S702：Device A is stored to " data file A ", when " data file A " reach predetermined length it
Afterwards, when preparing to be switched to next data file, to equipment B " switching command " is sent.
Step S703：Equipment B receives " switching command ", is switched to next data file, and to device A " switching is sent
Successfully instruct ", then start " video storage modules B ", equipment B enters the storage of normal video and common two-node cluster hot backup.
Step S704：Device A is received after " handover success instruction ", and " data file A, B " of firm storage is entered with equipment B
The operation of the common two-node cluster hot backup of row " video storage modules ".
Step S705：Synchronous " just in storage file success ", terminates device A, " synchronous just in storage file module " of B,
Terminate.
It should be noted that each embodiment in this specification is described by the way of progressive, each embodiment weight
Point explanation is all difference with other embodiment, between each embodiment identical similar part mutually referring to.
For device class embodiment, due to itself and embodiment of the method basic simlarity, so description is fairly simple, related part ginseng
See the part explanation of embodiment of the method.
Finally, in addition it is also necessary to explanation, herein, such as first and second or the like relational terms be used merely to by
One entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operation
Between there is any this actual relation or order.And, term " including ", "comprising" or its any other variant meaning
Covering including for nonexcludability, so that a series of process, method, article or equipment including key elements not only includes that
A little key elements, but also including other key elements being not expressly set out, or also include for this process, method, article or
The intrinsic key element of equipment.In the absence of more restrictions, the key element for being limited by sentence "including a ...", does not arrange
Except also there is other identical element in including the process of the key element, method, article or equipment.
For convenience of description, it is divided into various units with function when describing apparatus above to describe respectively.Certainly, this is being implemented
The function of each unit can be realized in same or multiple softwares and/or hardware during invention.
A kind of recovery data syn-chronization backup method provided by the present invention and system are described in detail above, herein
In apply specific case the principle and embodiment of the present invention be set forth, the explanation of above example is only intended to side
Assistant solves the method for the present invention and its core concept；Simultaneously for one of ordinary skill in the art, according to the think of of the present invention
Think, will change in specific embodiments and applications, in sum, it is right that this specification content should not be construed as
The restriction of the present invention.
Claims (10)
1. it is a kind of to recover the method that data syn-chronization is backed up, it is characterised in that to include：
After the first equipment fault is restarted, by each self-recording state current with regard to data file of the first equipment and the second equipment
Information is compared, and determines that the first equipment needs to carry out each data file of data backup, and the second equipment is carried out
The data file of video storage；
The equipment of real-time monitoring second is carrying out the data file state of video storage；For the first equipment any one need into
The data file of row data backup, judges that the data file whether there is and when the data file is first in the first equipment
In the presence of in equipment, the data file is corresponding in the first equipment with the data file in the corresponding initial recording time of the second equipment
The difference of initial recording time whether be more than default threshold value；
When the data file storage that the second equipment is carrying out video storage is completed, the first equipment of control simultaneously with the second equipment
Being switched to next data file carries out video storage, to recover the normal synchronization storage state of the first equipment；When the first equipment
When needing to carry out the data file of data backup and all judging to complete, based on judged result, the first equipment of control perform with it is described
The corresponding data backup operation of judged result.
2. method according to claim 1, it is characterised in that described based on judged result, the first equipment of control perform with
The corresponding data backup operation of the judged result includes：
For any one needs to carry out the data file of data backup, when the data file is in the corresponding initial note of the second equipment
Record time and the data file when the difference of the corresponding initial recording time of the first equipment is more than default threshold value, control first
Equipment to the second equipment sends the instruction of the first data acquisition, to obtain the second equipment in the video data that stored of the data file
Carry out covering backup.
3. method according to claim 1, it is characterised in that described based on judged result, the first equipment of control perform with
The corresponding data backup operation of the judged result includes：
For any one needs to carry out the data file of data backup, when the data file is in the corresponding initial note of the second equipment
Record time and the data file judge first when the difference of the corresponding initial recording time of the first equipment is less than default threshold value
The video data of the data file memory storage whether there is distortion data in equipment；
When the video data of the data file memory storage in the first equipment does not have distortion data, then with the number in the second equipment
The video data stored according to file is standard, in the video data that the data file in the first equipment is stored and the second equipment
The video data that the data file is stored is compared, and determines the video lacked in the corresponding data file of the first equipment
Data；Control the first equipment and send the instruction of the second data acquisition to the second equipment, to obtain the first equipment in the data file
The video data for being lacked is backed up；
When the video data of the data file memory storage in the first equipment has distortion data, then the distortion data is deleted
Remove, the video data of the data file storage is stored the data file in the first equipment as standard with the second equipment
The video data that video data is stored with the data file in the second equipment is compared, and determines the corresponding number of the first equipment
According to the video data lacked in file；Control the first equipment and send the instruction of the 3rd data acquisition to the second equipment, to obtain the
The video data lacked in the data file in one equipment is backed up.
4. method according to claim 1, it is characterised in that described based on judged result, the first equipment of control perform with
The corresponding data backup operation of the judged result includes：
For any one needs to carry out the data file of data backup, when the data file does not exist in the first equipment,
Control the first equipment and send the instruction of the 4th data acquisition to the second equipment, to obtain the second equipment in the data file stored
Video data carries out covering backup.
5. method according to claim 1, it is characterised in that also include：
When the first equipment is switched to next data file with the second equipment to carry out video and store simultaneously, the first equipment of control to
Second equipment sends the instruction of the 5th data acquisition, is carried out with obtaining the video data in the data file that the second equipment has just been stored
Cover backup.
6. it is a kind of to recover the system that data syn-chronization is backed up, it is characterised in that to include：
Determining unit, it is for after the first equipment fault is restarted, the first equipment and the second equipment is each self-recording with regard to data
The current status information of file is compared, and determines that the first equipment needs to carry out each data file of data backup, Yi Ji
Two equipment are carrying out the data file of video storage；
Monitoring judging unit, for the data file state that the equipment of real-time monitoring second is carrying out video storage；For first
Any one needs to carry out the data file of data backup equipment, judge the data file in the first equipment whether there is and
In the presence of the data file is in the first equipment, the data file is in the corresponding initial recording time of the second equipment and the data
Whether file is more than default threshold value in the difference of the corresponding initial recording time of the first equipment；
Control unit, when the data file storage for carrying out video storage when the second equipment is completed, controls the first equipment
Simultaneously being switched to next data file with the second equipment carries out video storage, and to recover the first equipment shape is normally synchronously stored
State；When the first equipment needs the data file for carrying out data backup all to judge to complete, based on judged result, control first sets
It is standby to perform the data backup operation corresponding with the judged result.
7. system according to claim 6, it is characterised in that control unit includes：
First control subelement, for needing to carry out the data file of data backup for any one, when the data file exists
The corresponding initial recording time of second equipment and the data file are more than in the difference of the corresponding initial recording time of the first equipment
During default threshold value, control the first equipment to the second equipment send the first data acquisition instruction, to obtain the second equipment in the number
The video data stored according to file carries out covering backup.
8. system according to claim 6, it is characterised in that described control unit includes：
Judgment sub-unit, for needing to carry out the data file of data backup for any one, when the data file is second
The corresponding initial recording time of equipment and the data file the corresponding initial recording time of the first equipment difference less than default
Threshold value when, judge the data file memory storage in the first equipment video data whether there is distortion data；
, there is no distortion data for working as the video data of the data file memory storage in the first equipment in the second control subelement
When, then the video data of the data file storage, as standard, the data file in the first equipment is stored with the second equipment
The video data that stored with the data file in the second equipment of video data compare, determine the data in the first equipment
The video data lacked in file；Control the first equipment and send the instruction of the second data acquisition to the second equipment, to obtain first
The video data lacked in the data file in equipment is backed up；
3rd control subelement, for when there is distortion data in the video data of the data file memory storage in the first equipment,
Then the distortion data is deleted, with the second equipment the video data of data file storage as standard, by the first equipment
The video data that the video data that the data file is stored is stored with the data file in the second equipment is compared, it is determined that
The video data lacked in the corresponding data file of first equipment；Control the first equipment and send the 3rd data to the second equipment
Instruction is obtained, the video data lacked in the data file in the first equipment is obtained and is backed up.
9. system according to claim 6, it is characterised in that described control unit includes：
4th control subelement, for needing to carry out the data file of data backup for any one, when the data file exists
When not existing in the first equipment, the first equipment of control to the second equipment sends the instruction of the 4th data acquisition, to obtain the second equipment
In the video data that stored of the data file carry out covering backup.
10. system according to claim 6, it is characterised in that also include：
Acquiring unit, for when the first equipment is switched to next data file with the second equipment and carries out video and store simultaneously,
Control the first equipment and send the instruction of the 5th data acquisition to the second equipment, to obtain the second equipment the data file for completing just has been stored
Interior video data carries out covering backup.
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