CN103685350B - The synchronous method of storage system and relevant equipment - Google Patents
The synchronous method of storage system and relevant equipment Download PDFInfo
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- CN103685350B CN103685350B CN201210324319.0A CN201210324319A CN103685350B CN 103685350 B CN103685350 B CN 103685350B CN 201210324319 A CN201210324319 A CN 201210324319A CN 103685350 B CN103685350 B CN 103685350B
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Abstract
A kind of synchronous method stored in system and relevant equipment are provided.The method includes: receive the amendment Operation Log corresponding to several amendment operations；According to the rule preset, described several amendment operations are grouped；It is performed in parallel at least some of or whole of described several amendment operation according to packet mode；Up-to-date sequential attribute value is updated to the sequential attribute value of the amendment operation of up-to-date execution in described several amendment operation；And the several amendment operation increments that would correspond to described several amendment operation merge with corresponding several initial datas.
Description
Technical field
The application relates to storage system, particularly relates to a kind of synchronous method stored in system and relevant equipment.
Background technology
Along with network technology and the development of cloud computing service, storage system not only plays the role of storage data, especially
Equipment indispensable when various cloud service is provided.Such as, storage system can be implemented to use data base or other form,
To tackle various different demands.
In order to lifting systematic function, storage system generally uses one or more main frame one or more standby hosts of collocation
Mode implement, and store the main frame of system and standby host can also make full use of the multiprocessor in modern times, many machines, multithreading
And/or the technology such as many machines executed in parallel promotes availability and/or the disposal ability of whole system.In order to ensure storage system
Main frame and standby host between data there is concordance, when main frame to storage data perform amendment operation time (such as, insert, update
And the amendment operation such as deletion), also the amendment Operation Log corresponding to these amendment operations can be synchronized to standby host.Therefore, storage
The main frame of system is not only able to have consistent data with standby host, and when abnormal delaying machine and needing again to open occur in storage system
During machine, it is also possible to by the amendment Operation Log recorded before replaying the machine of delaying, before making storage system to return to the machine of delaying
State.
Although main frame can be parallel by Read-Write Locks and correlation technique (such as, the multi version parallel control etc. of data base)
Ground performs these amendment operations, but its result is equivalent to perform these amendments serially according to a kind of order determined.Therefore,
When storing system synchronous vacations Operation Log between main frame and standby host, standby host must be play according to order determined by main frame
Operation Log is revised, to guarantee that main frame can have consistent data with standby host with performing these.If broadcast in a serial fashion
Put and perform these amendment Operation Logs, although being able to ensure that amendment operation sequentially can perform determined by foundation, however it is necessary that
The longer time is to complete the execution of amendment operation.Main frame has to wait for the amendment operation execution of standby host and completes, and just can ensure that master
Machine has consistent data with standby host, response time of user thus be extended, cause the hydraulic performance decline of whole storage system.
If the amendment operation execution that main frame is not to wait for standby host completes, then the data between main frame and standby host are likely to be out of synchronization, in some instances it may even be possible to
Cause main frame cannot store consistent data by the mode of synchronous vacations operation with standby host.On the other hand, if standby host also
Perform these amendment operations, then amendment operation performs order and the correctness of result are often difficult to ensure that capablely.
Similarly, when storing system exception and delay machine and turning back on, it is also desirable to according to the order determined before the machine of delaying again
Play and perform amendment Operation Log, with guarantee storage system can return to the machine of delaying before state.If performing this serially
Revise operation, although be able to ensure that amendment operation sequentially can perform determined by foundation, however it is necessary that the longer time is with complete
Become the execution of amendment operation.Storage system so that longer time from abnormal machine recovering state of delaying to normal condition, thus
The hydraulic performance decline of whole storage system can be caused.If being performed in parallel these amendment operations, then it is difficult to ensure that amendment operation is held
The order of row and the correctness of result.
At present, the correlation technique of storage system is typically concerned with the concurrent modification skill of one or more main frames of storage system
Simultaneous techniques between art, or the main frame of data base and standby host.Such as, multi version parallel control (MVCC) technology of data base,
Database host described in the daily record playback technology of MySQL and U.S. Patent No. 7,996,363 and the synchronization between standby host
Method etc..But, these technology are still difficult to solve above-mentioned technical problem.
Summary of the invention
The main purpose of the application is to provide a kind of synchronous method storing system and relevant equipment, existing to solve
The storage system synchronization problem of technology existence and the machine recovering state problem to normal condition of delaying, wherein:
An aspect according to the application, it is provided that a kind of method carrying out within the storage system synchronizing, the method includes: connect
Receive the amendment Operation Log corresponding to several amendment operations；According to the rule preset, these several amendment operations are grouped；Depend on
It is performed in parallel at least some of or whole of these several amendment operations according to packet mode；Up-to-date sequential attribute value is updated to this
The sequential attribute value of the amendment operation of up-to-date execution in several amendment operations；And would correspond to the several of these several amendment operations
Amendment operation increment merges with corresponding several initial datas.
According to the method for the embodiment of the present application, also include: these the several amendment operation increments after storage is merged are several with this
Initial data；And delete these the several amendment operation increments before merging and these several initial datas.
According to the method for the embodiment of the present application, also include: these several amendment operations are held in the way of multithreading concurrently
Line number submits step in advance to, to inquire about the position of several data of these several corresponding amendments of amendment operation；And according to predetermined
Order carries out several submission step in the way of single-threaded serially, revises data with the position according to these several data.
According to the method for the embodiment of the present application, also include: in these several pre-submission steps, by the position of these several data
With these several amendment operation notes in several transaction context；And in these several submission steps, according in these several affairs
Hereafter revise data.
According to the method for the embodiment of the present application, also include: when after the abnormal machine of delaying of the computer equipment in system, from this calculating
The amendment operation log recording module of machine equipment receives the amendment Operation Log corresponding to several amendment operations.
An aspect according to the application, it is provided that a kind of equipment carrying out within the storage system synchronizing, including: communication mould
Block, in order to receive the amendment Operation Log corresponding to several amendment operations；Amendment operation sequential packet module, in order to according to presetting
Rule these several amendment operations are grouped；Amendment operation executing module, in order to be performed in parallel this according to packet mode
Several repair at least some of of this operation or all；Up-to-date sequential attribute value logging modle, in order to by up-to-date sequential attribute value more
Newly to the sequential attribute value of the amendment operation of up-to-date execution in these several amendment operations；And amendment operation data update module,
The several amendment operation increments that would correspond to these several amendment operations merge with corresponding several initial datas.
According in the equipment of the embodiment of the present application, amendment operation data update these the several amendments after module stores merges
These several amendment operations before operation increment and these several initial datas, and this amendment operation data update module deletion fusion
Increment and these several initial datas.
According in the equipment of the embodiment of the present application, these several amendments are operated with multithreading by amendment operation executing module
Mode is performed in parallel several pre-submission step, to inquire about the position of several data of these several corresponding amendments of amendment operation,
And this amendment operation executing module carries out several submission step, serially with foundation according to predefined procedure in the way of single-threaded
The position amendment data of these several data.
According in the equipment of the embodiment of the present application, amendment operation executing module, should in these several pre-submission steps
The position of several data and these several amendment operation notes are in several transaction context, and this amendment operation executing module is at this
In several submission steps, revise data according to these several transaction context.
According to the equipment of the embodiment of the present application, also include: amendment operation log recording module, in order to store this several amendments
Operation；Wherein after this unit exception delays machine, this communication module receives corresponding to several from this amendment operation log recording module
The amendment Operation Log of amendment operation.
According to the technical scheme of the application, one of its advantage is that the degree of parallelism that amendment operation performs is high, can be to each
Amendment operation is performed in parallel respectively, and revises operation and can perform by arbitrary order, not only can guarantee that the correct of result
Property, moreover it is possible to promote the performance of system.Its another advantage is that the execution efficiency of amendment operation is high, between the main frame of storage system and standby host
Synchronization can be rapider, and store the state before system can be rapidly restored to the machine of delaying.Other advantages of the application will
It is explained in more detail by the following description and accompanying drawing.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing further understanding of the present application, constitutes the part of the application, this Shen
Schematic description and description please is used for explaining the application, is not intended that the improper restriction to the application.In the accompanying drawings:
Fig. 1 is the functional-block diagram after the storage system simplification of embodiments herein；And
Fig. 2 is the flow chart after the embodiment during storage System Operation of Fig. 1 simplifies.
Detailed description of the invention
Fig. 1 is the functional block diagram after storage system 100 simplification of embodiments herein.Storage system 100 can be wrapped
Include main frame 110, network 130 and standby host 150, main frame 110 and standby host 150 can use respectively one or more computer equipment and
Software is implemented, and computer equipment can use mobile or non-moving equipment, such as, server, personal computer, notes
The equipment such as this computer or mobile phone.
Main frame 110 can include DBM 111, amendment Operation Log generation module 116, amendment operation log recording
Module 117 and communication module 119.
The DBM 111 of main frame 110, in order to store data, when the data in DBM 111 are modified, is repaiied
Change Operation Log generation module 116 and can produce the amendment Operation Log of correspondence, make main frame 110 or the standby host 150 can be according to repairing
Change Operation Log and perform the amendment operation of correspondence.Additionally, main frame 110 can also be by amendment Operation Log generation module 116 institute
The amendment Operation Log produced is stored in amendment operation log recording module 117 such that it is able to after the abnormal machine of delaying of main frame 110
Use after turning back on.
Being operated for the amendment that DBM 111 is carried out by main frame 110 is to perform with both definite sequences, therefore corresponding
Amendment Operation Log can be with the sequential attribute value of explicit or implicit recording mode record modification operation, to represent amendment operation
The sequencing relation performed.Such as, in one embodiment, for DBM 111, each " writing affairs " is permissible
Having an incremental transaction number tr_id, each amendment operation (such as, insert, update and the operation such as deletion) write in affairs is respectively
Can have operation op_id effective and incremental in individuality writes affairs.Therefore, amendment Operation Log the most just can use
The sequential attribute value that (tr_id, op_id) operates as record modification.
Communication module 119 is in order to by produced for amendment Operation Log generation module 116 amendment Operation Log, to pass through network
130 and be sent to standby host 150 or other storage device.Communication module 119 can use standard procotol or from
The agreement of definition, in order to transmission and the reception that other computer equipments or other intermodules carry out data.
Standby host 150 include DBM 151, amendment operation sequential packet module 152, amendment operation executing module 153,
Up-to-date sequential attribute value logging modle 154, amendment operate data update module 155, amendment operation log recording module 156 and lead to
News module 157.In the embodiment in figure 1, only illustrate an amendment operation executing module 153 so that explanation, implement at other
In example, standby host 150 can include one or more amendment operation executing module.
DBM 151 is in order to store data, when main frame 110 and standby host 150 synchronize, and DBM 111 and 151
Stored data are identical.
When main frame 110 and standby host 150 need to synchronize, standby host 150 can via communication module 157 automatic network
130 Receiving Hosts 110 or other storage one or more amendment Operation Logs of being transmitted of device, and standby host 150 can be by
The amendment Operation Log received is stored in amendment operation log recording module 156.Communication module 157 can use standard
Procotol or self-defining agreement, in order to and other computer equipments or other intermodules carry out the transmission of data and connect
Receive.
These amendment Operation Logs can be grouped by amendment operation sequential packet module 152, and by after packet
Amendment Operation Log is sent to operation executing module 153 and performs the operation amendment of correspondence.
After amendment operation execution completes, up-to-date sequential attribute value logging modle 154 can record the amendment being complete
Operation and/or the amendment operation being not fully complete, to guarantee that the data that user or other computer equipments are stored are complete
Required amendment operation.Additionally, amendment operation data update module 155 can be at reasonable time, by amended data more
New to DBM 151.
Such as, in one embodiment, with execution sequence value ascending represent execution sequence by old to new.Up-to-date suitable
Sequence property value logging modle 154 can record up-to-date sequential attribute value lastest_ of the amendment operation performed
Order_attr, sequential attribute value is less than or equal to the amendment operation of up-to-date sequential attribute value lastest_order_attr, right
For user or other computer equipments, this amendment operation enters into force, and is able to ensure that correspondence is stored in DBM
Data in 151 are correct.Sequential attribute value operates more than the amendment of up-to-date sequential attribute value lastest_order_attr,
For user or other computer equipments, this amendment operation not yet comes into force.
In the embodiment in figure 1, illustrate only a main frame 110 and a standby host 150, and also omit main frame 110
With other elements in standby host 150, so that accompanying drawing is the most succinct and it is prone to illustrate.Such as, main frame 110 can also include repairing
Change operation sequential packet module, amendment operation executing module, amendment operation data update module and up-to-date sequential attribute value record
The elements such as module.In other examples, storage system can include one or more main frame, and it is one or more to arrange in pairs or groups
Standby host operates.
Fig. 2 is the flow chart after the storage system 100 of Fig. 1 embodiment when operating simplifies, and below will combine with Fig. 2
Fig. 1 illustrates the function mode of storage system 100 further.
In flow process 210, standby host 150 receives corresponding to amendment operation OP1, OP2 ... the amendment Operation Log of OPm.Example
As, main frame 110 and standby host 150 in storage system 100 carry out in the application synchronized, and standby host 150 can from main frame 110 or altogether
Storage device obtain amendment daily record.
In flow process 220, standby host 150 uses the amendment that amendment operation sequential packet module 152 will be received in flow process 210
Operation OP1, OP2 ... OPm is grouped.Amendment operation sequential packet module 152 can use random order, any regular weight
Amendment is operated OP1, OP2 by Combination nova or other rules preset ... OPm is grouped.
In flow process 230, the group result that amendment operation executing module 153 can operate according to amendment, and can be parallel
The operation amendment of ground executable portion, or it is performed in parallel whole operation amendments.Each packet can include one or many
The amendment operation of bar, and the amendment operation in these packets can perform in order in packet, and by these amendment operations
In the way of amendment operation increment, record is in individual packets.
In flow process 240, when amendment operation executing module 153 is by whole amendment operation OP1, OP2 ... OPm has performed
Cheng Hou, the up-to-date sequential attribute value logging modle 154 of standby host 150 can be by up-to-date sequential attribute value lastest_order_attr
It is updated to amendment operation OP1, OP2 ... sequential attribute value up-to-date in OPm.
In flow process 250, amendment operation data update module 155 can be at reasonable time, by being remembered in flow process 230
The amendment operation increment of record merges with corresponding initial data (if present) to obtain new initial data.Such as, in system
Time idle or time etc. of setting of system management memory person.
In flow process 260, amendment operation data update module 155 can in reasonable time deletes flow process 250 no longer
The initial data needed and amendment operation increment, and reclaim the space that they take.
In the flow process 220～230 of Fig. 2, amendment operation sequential packet module 152 can use random order, arbitrarily advise
Then reconfigure or amendment operated OP1, OP2 by other rules preset ... OPm is grouped, and revises operation and perform mould
Block 153 can be performed in parallel the operation amendment of part, or amendment operation executing module 153 can be performed in parallel whole
Operation amendment.Additionally, as it has been described above, standby host can use one or more amendment operation executing module to be performed in parallel part
Or whole operation amendments.
Such as, in one embodiment, the execution of operation amendment can be divided into and " carrying in advance by amendment operation executing module 153
Hand over " and " submission " two steps, and use the storage class of " transaction context ", preserve and need in " submission in advance " and " carry
Hand over " data of transmission in two steps.
Amendment operation executing module 153 can use multithreading to be performed in parallel the data query of " submitting in advance " step
And preparation, first inquire and to revise operation corresponding to " position " of data in DBM 151, and hold together with needs
The amendment operation of row is stored with in " transaction context ".
Amendment operation executing module 153 will be saved in the data write number of " transaction context " again in " submitting in advance " step
According to " position " of amendment in library module 151, and must assure that and carry out serially in the way of single-threaded according to " both definite sequences "
Submit to.Such as, in one embodiment, " submitting to " step must perform amendment operation by set order 1,2,3,4,5, even if
The amendment operation of numbered 5 first " is submitted in advance " and is completed, then in the step of " submitting to ", and amendment operation executing module 153 needs
Wait that the amendment operation first " submitting to " of numbered 4 completes, just can carry out the amendment operation of " submitting to " numbered 5.
In the flow process 250 of Fig. 2, amendment operation data update module 155 can be at reasonable time, by flow process 230
Recorded amendment operation increment carry out merging to obtain new initial data with corresponding initial data (if present).Though
So opportune moment is delayed in the amendment to data, owing to each data have recorded its " initial data " and " amendment operation
Increment ", therefore when " amendment operation increment " is applied to " initial data " in later time by standby host 150, can obtain and repair
Change the final result of rear data.Such as, " initial data " is 10, and " amendment operation increment " is "+1 ", therefore will " revise operation to increase
Amount " be fused to " initial data " after, can obtain final result is 11.Additionally, for each read operation, it is necessary to first will
" amendment operation increment " is fused to the output as read operation of the final result ability obtained by " initial data ", therefore, it is possible to really
Protect the correctness of data.
In another is implemented, after there is abnormal machine of delaying, the main frame 110 turned back on and/or standby host 150 can respectively from
Amendment operation log recording module 117 and 156 obtain amendment daily record, and by main frame 110 and/or standby host 150 carry out flow process 210～
The method of 260, to return to the state before abnormal machine of delaying.
In other examples, standby host 150 can also be simultaneously as the standby host of multiple main frames, and it is many to arrange in pairs or groups respectively
Individual standby host carries out above-mentioned flow process.
In the above-described embodiment, to amendment operation part or all can be performed in parallel, these operations need not be limited to
In different tables, also it need not be confined to the data block etc. of different data bases, and multiple amendment operation can be according to arbitrarily
Order performs, but still can ensure that the correctness of result.
In the above-described embodiment, the execution of amendment operation only needs the action of record modification, and to data itself (such as,
The data of DBM) amendment delay and perform opportune moment, therefore, the execution efficiency that not only can make data modification is high,
This kind of time-consuming running of amendment data also can be made to stagger the running peak period of storage system, thus improve the performance of system.
In the above-described embodiment, it is rapider that main frame carries out synchronize speed with standby host, and can reduce user pair
Storage system accesses the response time, and does not affect the conveying capacity of whole storage system.Additionally, same method can also be suitable for
Delay machine and need the situation turned back on the storage main frame of system and/or standby host are abnormal, and main frame and/or standby host can be made fast
Return to the state before the machine of delaying fastly.
Some vocabulary is employed to censure specific element in specification and claims.The skill of art
Art personnel are it is to be appreciated that same element may be called with different nouns.This specification and claims book not with
The difference of title is used as distinguishing the mode of element, but is used as the benchmark distinguished with element difference functionally.Saying
" including " mentioned in bright book and claims is open term, should be construed to " including but not limited to ".This institute
Use " and/or " describing mode, including cited one of them or the combination in any of multiple scheme.It addition, unless say
Specializing in bright book, the term of the most any odd number includes the connotation of plural number the most simultaneously.
Those skilled in the art are it should be appreciated that embodiments herein can be provided as method, system or computer program
Product.Therefore, the reality in terms of the application can use complete hardware embodiment, complete software implementation or combine software and hardware
Execute the form of example.And, the application can use at one or more computers wherein including computer usable program code
The upper computer program product implemented of usable storage medium (including but not limited to disk memory, CD-ROM, optical memory etc.)
The form of product.
The foregoing is only embodiments herein, be not limited to the application, for those skilled in the art
For Yuan, the application can have various modifications and variations.All within spirit herein and principle, any amendment of being made,
Equivalent, improvement etc., within the scope of all should being included in claims hereof.
Claims (10)
1. the method carrying out within the storage system synchronizing, described method includes:
Receive the amendment Operation Log corresponding to several amendment operations；
According to the rule preset, described several amendment operations are grouped；
It is performed in parallel at least some of or whole of described several amendment operation according to packet mode；
Up-to-date sequential attribute value is updated to the sequential attribute value of the amendment operation of up-to-date execution in described several amendment operation；With
And
The several amendment operation increments that would correspond to described several amendment operation merge with corresponding several initial datas.
Method the most according to claim 1, also includes:
Described several amendments after storage is merged operate increments and described several initial datas；And
Delete the described several amendment operation increments before merging and described several initial datas.
Method the most according to claim 1, also includes:
Described several amendment operations are performed in parallel several pre-submission step, to inquire about described several repair in the way of multithreading
Change the position of several data of the corresponding amendment of operation；And
In the way of single-threaded, several submission step is carried out serially, with the position according to described several data according to predefined procedure
Amendment data.
Method the most according to claim 3, also includes:
In described several pre-submission steps, by the position of described several data with described several amendment operation notes in several things
Business context；And
In described several submission steps, revise data according to described several transaction context.
Method the most according to claim 1, also includes:
When after the abnormal machine of delaying of the computer equipment in system, receive from the amendment operation log recording module of described computer equipment
Amendment Operation Log corresponding to several amendment operations.
6. carry out the equipment synchronized within the storage system, also include:
Communication module, in order to receive the amendment Operation Log corresponding to several amendment operations；
Amendment operation sequential packet module, in order to be grouped described several amendment operations according to the rule preset；
Amendment operation executing module, in order to be performed in parallel described several repairing at least some of of described operation according to packet mode
Or all；
Up-to-date sequential attribute value logging modle, in order to be updated to up-to-date in described several amendment operation holding by up-to-date sequential attribute value
The sequential attribute value of the amendment operation of row；And
Amendment operation data update module, would correspond to several amendment operation increments of described several amendment operation and corresponding number
Individual initial data merges.
Equipment the most according to claim 6, wherein, described amendment operation data update the described number after module stores merges
Individual amendment operation increment and described several initial datas, and described amendment operation data update module delete before merging described
Several amendment operation increments and described several initial datas.
Equipment the most according to claim 6, wherein, described several amendments are operated with many by described amendment operation executing module
The mode of thread is performed in parallel several pre-submission step, to inquire about several data of described several corresponding amendment of amendment operation
Position, and described amendment operation executing module according to predefined procedure carry out serially in the way of single-threaded several submit to step
Suddenly, data are revised with the position according to described several data.
Equipment the most according to claim 8, wherein, described amendment operation executing module is in described several pre-submission steps
In, by the position of described several data with described several amendment operation notes in several transaction context, and described amendment behaviour
Work execution module, in described several submission steps, revises data according to described several transaction context.
Equipment the most according to claim 6, also includes:
Amendment operation log recording module, in order to store described several amendment operation；
Wherein after described unit exception delays machine, described communication module from described amendment operation log recording module receive corresponding to
The amendment Operation Log of several amendment operations.
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| CN106802892B (en) * | 2015-11-26 | 2021-12-28 | 阿里巴巴集团控股有限公司 | Method and equipment for checking consistency of main and standby data |
| CN107491529B (en) * | 2017-08-18 | 2020-05-08 | 华为技术有限公司 | Snapshot deleting method and node |
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