CN103197987A - Data backup method, data recovery method and cloud storage system - Google Patents
Data backup method, data recovery method and cloud storage system Download PDFInfo
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Abstract
The invention provides a data backup method, a data recovery method and a cloud storage system, wherein the data backup method comprises the following steps: conducting sharding storage of a file after receiving a file saving request, and triggering the backup process of the sharding storage of the file. According to the method, the effectiveness of data backup or data recovery is improved.
Description
Technical field
The present invention relates to the computer system data redundancy technique, in particular, relate to the System and method for that data in the cloud storage are backed up and recover.
Background technology
In the data backup and system disaster tolerance of systems such as communication and internet, generally all use data backup system.Present standby system has versatility, comprises configurable strategy, by file interface, the file of file system is backed up, and these strategies comprise full dose or incremental backup mode.
Be stored in being extensive use of of fields such as communication and internet along with cloud, traditional standby system can continue to use, and by the file interface that the cloud storage provides, the data in the cloud storage, the mode the same according to the regular file system backs up.Benefit is to have saved input, can continue to continue to use existing standby system.Drawback also clearly namely not in conjunction with the cloud storage characteristics, is optimized backup functionality.Generalized case is, when traditional backup mode is applied to the cloud storage, can not obtain transformation period and the delta data of data in the cloud storage exactly, and it is ageing lower.
Summary of the invention
The technical problem to be solved in the present invention provides method and the cloud storage system of a kind of method of data backup, data recovery, to improve the ageing of data backup or data recovery.
In order to solve the problems of the technologies described above, the invention provides a kind of method of data backup, comprising:
After receiving the request of preserving file, described file is carried out the burst storage, and trigger the backup flow process to the burst of described file.
Further, said method also has following characteristics: described described file is carried out burst storage, comprising:
If described file is new files, then described new files is carried out burst and handle;
Store according to the file fragmentation of the burst store configuration information that gets access to after to described processing, described burst store configuration information comprises: storage distribution, memory location, the storage size of available burst space correspondence.
Further, said method also has following characteristics:
Comprise in the described process of described file being carried out burst storage: described new files is carried out update mark;
Described triggering comprises the backup flow process of file fragmentation:
If find to have the file of update mark, then the burst to the file of this update mark backs up.
Further, said method also has following characteristics: described described file is carried out burst storage, comprising:
If described file is existing file, then according to the indication of the burst store configuration information that gets access to described existing file is carried out the burst storage, described burst store configuration information comprises: the segmental identification of described existing file, the memory location of burst, storage size.
Further, said method also has following characteristics: the indication of the burst store configuration information that described basis gets access to is carried out described existing file also comprising in the process of burst storage:
As the burst of existing file is inconsistent with the data of local storage as described in finding, then inconsistent burst is carried out update mark;
Described triggering comprises the backup flow process of file fragmentation:
If find to have the burst of update mark, then all bursts to described burst or described burst corresponding file back up.
Further, said method also has following characteristics: described burst is backed up comprises:
Preserve data and the descriptor of described burst, described descriptor comprises: described burst corresponding file sign, the sign of described burst, the version number of described burst.
In order to address the above problem, the method that the present invention also provides a kind of data to recover comprises:
After receiving the instruction that recovers data, obtain the file fragmentation data of corresponding backup according to the file fragmentation information that described instruction is carried;
Recover to handle by described file fragmentation data.
Further, said method also has following characteristics: described file fragmentation information comprises:
The file fragmentation sign; Or
File fragmentation sign and file fragmentation version number.
In order to address the above problem, the present invention also provides a kind of cloud storage system, comprising:
First module after being used for receiving the request of preserving file, is carried out the burst storage to described file;
Second module is used for triggering the backup flow process to the burst of described file.
Further, above-mentioned cloud storage system also has following characteristics: described first module comprises:
First module is used for then described new files being carried out burst and handling if judge that described file is new files;
Unit second is used for storing according to the file fragmentation of the burst store configuration information that gets access to after to described processing, and described burst store configuration information comprises: storage distribution, memory location, the storage size of available burst space correspondence.
Further, above-mentioned cloud storage system also has following characteristics: first module also comprises:
Unit the 3rd is used for described new files is carried out update mark;
Second module, concrete being used for if find to have the file of update mark, then the burst to the file of this update mark backs up.
Further, above-mentioned cloud storage system also has following characteristics: first module comprises:
Unit the 4th, be used for if judge that described file is existing file, then according to the indication of the burst store configuration information that gets access to described existing file is carried out the burst storage, described burst store configuration information comprises: the segmental identification of described existing file, the memory location of burst, storage size.
Further, above-mentioned cloud storage system also has following characteristics: first module also comprises:
Unit the 5th is used for as the burst of existing file as described in finding inconsistently with the data of local storage, then inconsistent burst is carried out update mark;
Second module, concrete being used for then backs up described burst or described burst corresponding file if find to have the burst of update mark.
Further, above-mentioned cloud storage system also has following characteristics: also comprise:
The 3rd module after being used for receiving the instruction that recovers data, is obtained the file fragmentation data of corresponding backup according to the file fragmentation information that described instruction is carried;
Four module is used for recovering to handle by described file fragmentation data.
To sum up, the invention provides method and the cloud storage system of a kind of method of data backup, data recovery, to improve the ageing of data backup or data recovery.
Description of drawings
Fig. 1 is the synoptic diagram of the cloud storage system of the embodiment of the invention.
Fig. 2 is the general frame synoptic diagram based on cloud storage system of the embodiment of the invention.
Fig. 3 is the process flow diagram of the method for data backup of the embodiment of the invention.
Fig. 4 is the process flow diagram based on the data backup of cloud storage of the embodiment of the invention.
Fig. 5 is the process flow diagram of the method recovered of the data of the embodiment of the invention.
Fig. 6 is the process flow diagram that the data based on the cloud storage of the embodiment of the invention are recovered.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, hereinafter will be elaborated to embodiments of the invention by reference to the accompanying drawings.Need to prove that under the situation of not conflicting, the embodiment among the application and the feature among the embodiment be combination in any mutually.
Fig. 1 is the synoptic diagram of the cloud storage system of the embodiment of the invention, and as shown in Figure 1, the system of present embodiment can comprise:
First module after being used for receiving the request of preserving file, is carried out the burst storage to described file;
Second module is used for triggering the backup flow process to the burst of described file.
Wherein, in a preferred embodiment, first module can comprise:
First module is used for then described new files being carried out burst and handling if judge that described file is new files;
Unit second is used for storing according to the file fragmentation of the burst store configuration information that gets access to after to described processing, and described burst store configuration information comprises: storage distribution, memory location, the storage size of available burst space correspondence.
Wherein, first module can also comprise:
Unit the 3rd is used for described new files is carried out update mark;
Second module, concrete being used for if find to have the file of update mark, then the burst to the file of this update mark backs up.
Wherein, first module can also comprise:
Unit the 4th, be used for if judge that described file is existing file, then according to the indication of the burst store configuration information that gets access to described existing file is carried out the burst storage, described burst store configuration information comprises: the segmental identification of described existing file, the memory location of burst, storage size.
Wherein, first module can also comprise:
Unit the 5th is used for as the burst of existing file as described in finding inconsistently with the data of local storage, then inconsistent burst is carried out update mark;
Second module, concrete being used for then backs up described burst or described burst corresponding file if find to have the burst of update mark.
Wherein, the cloud storage system of present embodiment can also comprise:
The 3rd module after being used for receiving the instruction that recovers data, is obtained the file fragmentation data of corresponding backup according to the file fragmentation information that described instruction is carried;
Four module is used for recovering to handle by described file fragmentation data.
The module of present embodiment, the unit is divided according to carrying out action, certainly, as long as can reach purpose of the present invention, also can be according to function, or logic entity carries out different divisions to cloud storage system of the present invention, as shown in Figure 2, the cloud storage system of the embodiment of the invention can comprise: use, cloud storage FAC (File Access Client, the file access client), cloud storage FLR (File Location Register, the document location register), cloud storage FAS (File Access Server, file access server) and local backup system.
Use: the client application that refers to read and write the cloud storage file, can pass through multiple open file interface (POSIX (Portable Operating System Interface, the portable operating system interface), CIFS (Common Internet File System, general internet file system), NFS (network file system(NFS), Network File System) read-write cloud stored files data interface such as).
Cloud storage FAC: be responsible for finishing the Client Agent function, API (the Application Programming Interface of file operation is provided to application process on the one hand, application programming interface), finishes mutual with FLR and FAS on the other hand, finish moving of data.
FAC realizes outside the read-write requests of file data except comprising mutual with FLR, goes back the renewal indication of management document burst (CHUNK), and send to FLR.
FAC and FAS realize the storage of file fragmentation alternately.
In addition, FAC also accepts the indication of the data recovery of FLR, carries out the recovery of data backup.
Cloud storage FLR: be responsible for file access control, the management of data file distribution and various metadata comprises:
1, the important file metadata of management comprises that the NameSpace, file of file and burst are to the mapping table of burst, the positional information of burst, the renewal indication of burst etc.Particularly, can be storage information of source document title, file ID, file etc., wherein file storage information comprises: the copy amount of file, burst quantity, burst ID, file fragmentation length, burst deposit position, compression parameters, encryption parameter etc.
Wherein, whether the renewal of burst indication can comprise updated information.
2, management cloud storage system is responsible for piece and is distributed, refuse collection, and piece copies, load balance, the control of system aspects such as FAS system data.In the database of the FLR that metadata and the configuration data that some need forever be preserved leave in.
3, FLR can use the equipment redundancy mode of active and standby or cluster, guarantees data consistency between each FLR server.
4, according to the backup policy configuration, the file fragmentation that has upgraded is carried out back-up processing.And with the local backup system interaction, indicate it to carry out backup operation.
5, FLR initiates the indication that data are recovered to FAC where necessary.
Cloud storage FAS: be responsible for and storage hardware mechanical floor interface, carry out file fragmentation access, move operation.Comprise the file fragmentation backup operation that responds standby system, and the storage equilibrium of cloud storage itself, carry out the read-write of data etc. when copy is safeguarded.
Local backup system: be responsible for storage and the management of the data backup of storage file; Be responsible for the recovery management of backup; Be responsible for carrying out backup and the recovery of file fragmentation with FAS, FLR interface.
Fig. 3 is the process flow diagram of the method for data backup of the embodiment of the invention, and as described in Figure 3, the method for present embodiment comprises following step:
S10, receive the request of preserving file after, described file is carried out the burst storage, and triggers the backup flow process to the burst of described file.
Be elaborated based on the data backup flow process of the cloud storage method to the embodiment of the invention with one below.
As shown in Figure 4, the data backup flow process based on the cloud storage may further comprise the steps:
Step 201, application initiate to preserve file operation to the corresponding FAC of cloud storage system.
This document may be the new files that also is not stored in the cloud storage, comprises using newly-built file; Deposit file from what cloud storage was read before also may being, use the ID that wants buffer memory to deposit file etc., this information reads when depositing file for being applied in, and is obtained from FLR by FAC, and then returns to application by FAC.
Each burst of step 202, this FAC management this document and the renewal indication of burst.
When receiving the preservation file request of using transmission, handle the renewal indication of each file fragmentation.For example, upgrade indication and be defaulted as 0, expression is not upgraded; If be set to 1, represent that this burst upgrades.Perhaps, use version number value, expression is upgraded.For new files, FAC with file fragmentation after, the version number of giving tacit consent to all bursts is 0, represents that it is the burst initial version, if burst upgrades, then version number adds 1.Also can both (upgrading indication and version number) use simultaneously, hereinafter as example.
To new files, FAC carries out burst to this document and handles, and by certain algorithm, file fragmentation is carried out storage allocation in the burst space of FAS according to the configuration information that obtains burst in advance from FLR.The corresponding version number of each file fragmentation is set to 0, upgrades indication and is set to 1.
To depositing file, FAC is according to the configuration information that obtains burst in advance from FLR, and FAC leaves each burst of this document in existing file burst store configuration information appointed positions.The renewal indication and the version number that deposit file of buffer memory among the FAC.
Step 203, this FAC transmit the request message of application memory file to corresponding FLR.
Described request message comprises: file ID, file path and file name etc.For new files, file ID is represented for sky or with 0; For depositing file, then use the file ID of buffer memory.
The FAC buffer memory has been deposited the ID of file, and each burst ID and storage information thereof and burst upgrade indication, version number, and these information read when depositing file for being applied in, and are obtained from FLR by FAC.
Step 204, this FLR return the storage file response message to corresponding FAC.
Response message comprises: the burst store configuration information, comprise FAS distribution, memory location, the storage size (MB) of available burst space correspondence, and memory location of the burst ID of existing file, burst, storage size (MB) etc.
Step 205, this FAC are to corresponding FAS request storage file burst.
Whether step 206, this FAS carry out the storage file burst, and return response message to corresponding FAC, comprise this burst and upgrade.
Be that FAS can with data in this document burst and the current storage burst relatively cover storage afterwards before carrying out storage.For example, if relatively more different, then upgrade indicating bit and return 1 expression, if identical, upgrade indicating bit and then return 0.
So far, carry out the function that realizes first module among Fig. 1 by FAC, FLR and FAS.
Step 207, this FAC manage the renewal indication of each burst and version number information etc.
To new files, it is constant that renewal indication and version number keep the value of step 202 setting; For depositing file, if step 206 rreturn value is 0, represent that then this burst upgrades indication and version number keeps step 202, the value of setting is constant, if step 206 rreturn value is 1, then represent this burst upgrade indicate be set to 1 and version number add 1.
Step 208, this FAC send log file burst storage information and upgrade indication request to corresponding FLR, and this request comprises this document burst ID and storage information thereof and upgrades indication, version number etc.
Step 209, this FLR record this document burst ID and storage information and renewal indication, version number etc.
These information are when record, and to new files, FLR is newly-increased these recording of informations that comprises in database; For depositing file, FLR is the value of replacing original record in database.After the FLR record is finished, return response to corresponding FAC.
Step 210, this FLR handle the backup of file fragmentation, namely according to the backup policy of configuration, the backup of file fragmentation are handled.
For example, when step 209 recording events triggers, if judging to upgrade is designated as 1, then initiate step 211, carry out the back-up processing of this document burst; Perhaps, periodic scan on the time if judging to upgrade is designated as 1, is then initiated step 211, carries out the back-up processing of this document burst.If judging to upgrade is designated as 0, then do not carry out back-up processing.
Step 211, FLR initiate the Indication message of backup file burst to the local backup system.
Described Indication message comprises the backup indication of one or more file fragmentations, information such as include file ID, file fragmentation ID, file fragmentation version number, burst memory location and storage size thereof, copy amount, burst quantity, compression parameters, encryption parameter.
Step 212, local backup system return the backup response, and expression backup indication is accepted.
Step 213, local backup system are initiated the request of reading the file fragmentation data to the place FAS of file fragmentation to be backed up.
Step 214, this FAS return the file fragmentation that it reads to the local backup system.
After the local backup system receives data, preserve this document fragment data and descriptor thereof, information such as descriptor include file ID, file fragmentation ID, file fragmentation version number, burst memory location and storage size thereof, copy amount, burst quantity, compression parameters, encryption parameter.
So far, carry out the function that realizes second module among Fig. 1 by FAC, FLR, FAS and local backup system.
The management for convenience of local backup system and data are recovered, can be to further encapsulation and the classification of file fragmentation data of backup.
Step 215, FAC check the stores processor of whether finishing the All Files burst.If finish or overtime, then empty and reclaim the resource that takies, enter step 216; If do not finish, then continue to handle untreated file fragmentation from step 202.
Step 216, FAC return the response of preserving file to application.
Wherein, step 210 is to 214, with step 215 to 216, do not have temporal precedence relationship restriction.
Wherein, FLR handles the backup of file fragmentation, namely according to the backup policy of configuration, the backup of file fragmentation is handled.FLR record burst triggers the backup flow process when storing message event, as judging if renewal is designated as 1, then carries out the back-up processing of this document burst; Perhaps, periodic scan on the time, disconnected if renewal is designated as 1, carry out the back-up processing of this document burst.
In sum, file backup system and method based on the cloud storage provided by the invention.Realized backing up by its burst of file in the cloud storage, making can be when document change, directly indicate standby system to carry out backup operation in time, and can specifically navigate to the file fragmentation of backup, scanning link and the expense of regular file system backup mode have been reduced, and also to back up access and process relatively when avoiding incremental update, thus realize back-up processing more efficiently, thus the ageing of backup improved.
Fig. 5 is the process flow diagram of the method recovered of the data of the embodiment of the invention, as shown in Figure 5, comprises following step:
S21, receive the instruction that recovers data after, obtain the file fragmentation data of corresponding backup according to the file fragmentation information that described instruction is carried;
S22, recover to handle by described file fragmentation data.
Be elaborated based on the Data Recovery Process of the cloud storage method to the embodiment of the invention with one below.
In the present embodiment, when data were recovered, FLR sent to internal system FAC client and recovers data-indication message, information such as this Indication message can include file ID, file fragmentation ID, file fragmentation version number.
FAC reads the Backup Data of file fragmentation to the local backup system request, carries information such as file ID, file fragmentation ID, file fragmentation version number.The local backup system is to the Backup Data of this FAC backspace file burst.Mutual to the storage that FLR, FAS carry out Backup Data by FAC, realize the data recovery.
As shown in Figure 6, the Data Recovery Process based on the cloud storage may further comprise the steps:
Step 301, FLR send to FAC and recover data-indication message.
This FAC is generally the internal system client, not with application interface.
Data integrity and equipment serviceability in the storage of FLR monitoring cloud may cause Data Recovery Process owing to reasons such as loss of data, hardware damage.
Described Indication message comprises: information such as file ID, file fragmentation ID, file fragmentation version number.File ID can not be sky; File fragmentation ID can be sky, and expression this moment recovers this document ID corresponding file data, and when file fragmentation ID was not empty, expression recovered the fragment data of this document ID, file fragmentation ID appointment.File fragmentation ID is not empty, and file fragmentation version number is meaning again, and file fragmentation version number be the empty fragment data of representing the recovery latest edition, otherwise is the fragment data of indicated release.
Step 302, this FAC return the response that recovers data to corresponding FLR.Expression FAC has accepted this indication, and the data of buffer memory indication information.
Step 303, FAC read the Backup Data of file fragmentation to the local backup system request, carry information such as file ID, file fragmentation ID, file fragmentation version number.
Step 304, local backup system are to the Backup Data of this FAC backspace file burst.
Step 305, FAC ask storage file to FLR.
Request message comprises information such as file ID, information such as file ID, file fragmentation ID, file fragmentation version number, the value of use step 302 buffer memory.
Step 306, this FLR return the response of storage file to corresponding FAC.Response message is with step 203.
Step 307, FAC are to the FAS storage file burst of appointment.Message synchronization rapid 205.
Step 308, this FAS return the response of storage file burst to corresponding FAC.Message synchronization is rapid 206, upgrades indicating bit and returns 0.Just data recovered does not trigger the backup flow process.
Step 309, FAC check the stores processor of whether finishing the All Files burst.If finish or overtime, then empty and reclaim the resource that takies; If do not finish, then continue to handle untreated file fragmentation from step 302.
One of ordinary skill in the art will appreciate that all or part of step in the said method can instruct related hardware to finish by program, described program can be stored in the computer-readable recording medium, as ROM (read-only memory), disk or CD etc.Alternatively, all or part of step of above-described embodiment also can use one or more integrated circuit to realize.Correspondingly, each the module/unit in above-described embodiment can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
Below only be the preferred embodiments of the present invention; certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (14)
1. method of data backup comprises:
After receiving the request of preserving file, described file is carried out the burst storage, and trigger the backup flow process to the burst of described file.
2. the method for claim 1 is characterized in that: described described file is carried out the burst storage, comprising:
If described file is new files, then described new files is carried out burst and handle;
Store according to the file fragmentation of the burst store configuration information that gets access to after to described processing, described burst store configuration information comprises: storage distribution, memory location, the storage size of available burst space correspondence.
3. method as claimed in claim 2 is characterized in that:
Comprise in the described process of described file being carried out burst storage: described new files is carried out update mark;
Described triggering comprises the backup flow process of file fragmentation:
If find to have the file of update mark, then the burst to the file of this update mark backs up.
4. the method for claim 1 is characterized in that: described described file is carried out the burst storage, comprising:
If described file is existing file, then according to the indication of the burst store configuration information that gets access to described existing file is carried out the burst storage, described burst store configuration information comprises: the segmental identification of described existing file, the memory location of burst, storage size.
5. method as claimed in claim 4 is characterized in that: the indication of the burst store configuration information that described basis gets access to is carried out described existing file also comprising in the process of burst storage:
As the burst of existing file is inconsistent with the data of local storage as described in finding, then inconsistent burst is carried out update mark;
Described triggering comprises the backup flow process of file fragmentation:
If find to have the burst of update mark, then all bursts to described burst or described burst corresponding file back up.
6. as claim 3 or 5 described methods, it is characterized in that: described burst is backed up comprises:
Preserve data and the descriptor of described burst, described descriptor comprises: described burst corresponding file sign, the sign of described burst, the version number of described burst.
7. the method recovered of data comprises:
After receiving the instruction that recovers data, obtain the file fragmentation data of corresponding backup according to the file fragmentation information that described instruction is carried;
Recover to handle by described file fragmentation data.
8. method as claimed in claim 7, it is characterized in that: described file fragmentation information comprises:
The file fragmentation sign; Or
File fragmentation sign and file fragmentation version number.
9. cloud storage system comprises:
First module after being used for receiving the request of preserving file, is carried out the burst storage to described file;
Second module is used for triggering the backup flow process to the burst of described file.
10. cloud storage system as claimed in claim 9, it is characterized in that: described first module comprises:
First module is used for then described new files being carried out burst and handling if judge that described file is new files;
Unit second is used for storing according to the file fragmentation of the burst store configuration information that gets access to after to described processing, and described burst store configuration information comprises: storage distribution, memory location, the storage size of available burst space correspondence.
11. cloud storage system as claimed in claim 10 is characterized in that: first module also comprises:
Unit the 3rd is used for described new files is carried out update mark;
Second module, concrete being used for if find to have the file of update mark, then the burst to the file of this update mark backs up.
12. cloud storage system as claimed in claim 9 is characterized in that: first module comprises:
Unit the 4th, be used for if judge that described file is existing file, then according to the indication of the burst store configuration information that gets access to described existing file is carried out the burst storage, described burst store configuration information comprises: the segmental identification of described existing file, the memory location of burst, storage size.
13. cloud storage system as claimed in claim 12 is characterized in that: first module also comprises:
Unit the 5th is used for as the burst of existing file as described in finding inconsistently with the data of local storage, then inconsistent burst is carried out update mark;
Second module, concrete being used for then backs up described burst or described burst corresponding file if find to have the burst of update mark.
14. as each described cloud storage system of claim 9-13, it is characterized in that: also comprise:
The 3rd module after being used for receiving the instruction that recovers data, is obtained the file fragmentation data of corresponding backup according to the file fragmentation information that described instruction is carried;
Four module is used for recovering to handle by described file fragmentation data.
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