CN106331081A - Information synchronization method and device - Google Patents
Information synchronization method and device Download PDFInfo
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- CN106331081A CN106331081A CN201610694742.8A CN201610694742A CN106331081A CN 106331081 A CN106331081 A CN 106331081A CN 201610694742 A CN201610694742 A CN 201610694742A CN 106331081 A CN106331081 A CN 106331081A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1095—Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
Abstract
The invention discloses an information synchronization method and device, which are applied to a first controller, wherein the first controller is any one controller in a memory system, and the first controller and a second controller are mutually redundant in the memory system. The method comprises the following steps of receiving a first command sent by a client; sending the first command to the second controller, so as to enable the second controller to modify memory-related information according to the first command, and if the modification is successful, then returning first response information which carries a modification success result; and if the first response information returned by the second controller is received, then modifying local related memory information according to the first command. The application of the technical scheme provided by the embodiment of the invention can guarantee the real-time and reliable information synchronization between the first controller and the second controller at a command level, avoids the situation of data inconsistency, and maintains the normal work of a computer cluster.
Description
Technical field
The present invention relates to computer memory technical field, particularly relate to a kind of information synchronization method and device.
Background technology
In the storage system of computer cluster, if only one controller of configuration, easily produce single point failure point
(Single Point Of Failure, SPOF), affects the normal work of computer cluster.So, typically can configure two controls
Device processed, the two controller is mutually redundant.
In work process at ordinary times, two controllers all manage respective logical volume, when one of them controller is because of fault
The when of inefficacy, logical volume corresponding to this controller needs to be taken over by controller of another normal work, continue with for
The read-write requests of these logical volumes.This is accomplished by two controllers and carries out synchronizing information in work process at ordinary times.
For example, and SCSI-3Persistent Reserve (the lasting reservation of small computer system interface, referred to as
PR) the association attributes field of information real-time synchronization between the two controllers is extremely important.PR information includes each I-T-L
(Initiator-Target-LUN) path is to registration (Register) information of each logical volume (LUN) and reserved
(Reserve) information, specifically includes login key (Key), reservation types (Type) etc..These information must be at two controllers
Middle holding is completely the same, otherwise arises that mistake or exception.
Such as, SCSI-3 agreement specifies, once certain I-T-L path has carried out the pre-of the exclusive type of read-write to certain LUN
Staying, this LUN cannot be written and read by other I-T-L paths.Assume that an I-T-L path ITL0 passes through controller 1 to LUN0
Reserved, and this reserved information is not synchronized to controller 2.If another I-T-L path ITL1 passes through controller 2
Attempt LUN0 is conducted interviews.Specifying according to agreement, LUN0 can not be written and read by ITL1, yet with in controller 2
The not ITL0 reserved information to LUN0, therefore, LUN0 can be written and read by ITL1, thus it is inconsistent to produce data
Situation, causes serious consequence.
In the prior art, a controller is only simply synchronizing information to be sent to another controller, another
Whether controller carries out the record of corresponding information and amendment is unknown, and once in two controllers, information is asynchronous, it is possible to
Produce the situation that data are inconsistent, affect the normal work of computer cluster.
Summary of the invention
For solving above-mentioned technical problem, the present invention provides a kind of information synchronization method and device.
A kind of information synchronization method, is applied to the first controller, and described first controller is any one in storage system
Individual controller, described first controller is mutually redundant with the second controller in described storage system, and described method includes:
Receive the first order that client sends；
Described first order is sent to described second controller, so that described second controller is according to described first life
Order, carries out the amendment of internal memory relevant information, if successfully modified, then returns the first response message carrying successfully modified result；
If receiving described first response message that described second controller returns, then according to described first order amendment
Locally associated memory information.
In a kind of detailed description of the invention of the present invention, described reception client send first order after, described
Before described first order is sent to second controller, described method also includes:
Determine whether the described first type ordered is default synchronizing information type；
If it is, perform the described step that described first order is sent to described second controller.
In a kind of detailed description of the invention of the present invention, described method also includes:
When determining that the described first type ordered is not default synchronizing information type, directly perform described amendment this locality
The step of internal memory relevant information.
In a kind of detailed description of the invention of the present invention, described method also includes:
If not receiving the heartbeat message of described second controller in setting the time period, or receive described second
The event of failure notice message of controller, then be managed the logical volume that described second controller is corresponding.
In a kind of detailed description of the invention of the present invention, described method also includes:
If receiving the synchronizing information request that described second controller sends, then interrupt described second controller corresponding
The management of logical volume, and return all of information to be synchronized to described second controller so that described second controller according to
Described information updating this locality to be synchronized internal memory relevant information, and the logical volume of self correspondence is managed.
A kind of synchronizing information device, is applied to the first controller, and described first controller is any one in storage system
Individual controller, described first controller is mutually redundant with the second controller in described storage system, and described device includes:
Order receiver module, for receiving the first order that client sends；
Order sending module, for being sent to described second controller by described first order, so that described second controls
Device, according to described first order, carries out the amendment of internal memory relevant information, if successfully modified, then return and carries successfully modified result
The first response message；
Information modified module, is used for when receiving described first response message that described second controller returns, according to
Locally associated memory information is revised in described first order.
In a kind of detailed description of the invention of the present invention, described device also includes that information type determines module, is used for:
Described reception client send first order after, described by described first order be sent to second controller
Before, determine whether the described first type ordered is default synchronizing information type；Send if it is, trigger described order
Module.
In a kind of detailed description of the invention of the present invention, described information type determines module, is additionally operable to:
When determining that the described first type ordered is not default synchronizing information type, directly the local internal memory of amendment is correlated with
Information.
In a kind of detailed description of the invention of the present invention, described device also includes logical volume management module, is used for:
When not receiving the heartbeat message of described second controller in setting the time period, or receiving described second
When the event of failure of controller notifies message, the logical volume that described second controller is corresponding is managed.
In a kind of detailed description of the invention of the present invention, described device also includes recovery management module, is used for:
When receiving the synchronizing information request that described second controller sends, interrupt corresponding to described second controller
The management of logical volume, and return all of information to be synchronized to described second controller, so that described second controller is according to institute
State information updating this locality to be synchronized internal memory relevant information, and the logical volume of self correspondence is managed.
The technical scheme that the application embodiment of the present invention is provided, as first of any one controller in storage system
This first order, when receiving the first order that client sends, is sent to second controller, second controller by controller
According to this first order, carry out the amendment of its local internal memory relevant information, successfully modified after, return to carry to the first controller and repair
Change the first response message of successful result, if the first controller receives this first response message, then can according to this first
The local internal memory relevant information of order amendment.As such, it is possible to ensure between the first controller and second controller at command-levels
Information synchronizes in real time and reliably, it is to avoid produce the situation that data are inconsistent, safeguards the normal work of computer cluster.
Accompanying drawing explanation
For the clearer explanation embodiment of the present invention or the technical scheme of prior art, below will be to embodiment or existing
In technology description, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some bright embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to root
Other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is the implementing procedure figure of a kind of information synchronization method in the embodiment of the present invention；
Fig. 2 is the structural representation of a kind of synchronizing information device in the embodiment of the present invention.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the present invention program, below in conjunction with the accompanying drawings and detailed description of the invention
The present invention is described in further detail.Obviously, described embodiment be only a part of embodiment of the present invention rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, broadly falls into the scope of protection of the invention.
Embodiments providing a kind of information synchronization method, the method can apply to the first controller, is calculating
In the storage system of machine cluster, multiple controller, wherein, the first controller and second controller communication connection can be comprised, mutually
For redundancy, the first controller is any one controller in this storage system.
In this storage system, it is respectively allocated to the first controller and the corresponding logical volume of second controller.In work at ordinary times
During work, the first controller and second controller manage each self-corresponding logical volume, and carry out synchronizing information.
Shown in Figure 1, by the implementing procedure figure of a kind of information synchronization method that the embodiment of the present invention is provided, the method
May comprise steps of:
S110: receive the first order that client sends.
Within the storage system, can be that each controller distributes a number of logical volume.First controller and the second control
Respective logical volume, in course of normal operation, is managed by device processed.
When the first controller receives the first order that client sends, the operation of step S120 can be continued executing with.
S120: the first order is sent to second controller, so that second controller is according to the first order, carries out internal memory phase
The amendment of pass information, if successfully modified, then returns the first response message carrying successfully modified result.
In embodiments of the present invention, after the first controller receives the first order that client sends, first order first
It is sent to second controller.This first order can be resolved by second controller, and according to this first order, carries out this locality
The amendment of internal memory relevant information.If successfully modified, then second controller can carry successfully modified to the first controller return
First response message of result, shows first to order according to this and successfully have modified local internal memory relevant information.If amendment
Failure, then second controller can return the second response message carrying amendment failure result to the first controller, shows basis
This first order local internal memory relevant information of unsuccessful amendment, or, second controller can not return any information.
S130: if receiving the first response message that second controller returns, then according to the first local phase of order amendment
Close memory information.
If the first controller receives the first response message that second controller returns, then can know second controller
First ordering according to this and successfully revise its local internal memory relevant information, at this moment, the first controller can be according to this first life
Order, revises oneself locally associated memory information.
In actual applications, if the first controller receive second controller return the second response message, or
Set in the time period and do not receive any response message that second controller returns, then can know second controller according to this
One orders its local internal memory relevant information of unsuccessful amendment, and in this case, the first controller can to this first order not
Process, or repeat the step that the first order is sent to second controller.
First controller is any one controller in storage system, and it is reciprocity with second controller.When second
Controller receives the second order that client sends, and also needs the second order is sent to the first controller, the first controller root
According to this second order, the amendment of local internal memory relevant information can be carried out, if successfully modified, can return to second controller
Carry the 3rd response message of successfully modified result, if second controller receives the 3rd response letter that the first controller returns
Breath, then can be according to this second order local internal memory relevant information of amendment.
The method that the application embodiment of the present invention is provided, as the first control of any one controller in storage system
Device receive client send first order time, by this first order be sent to second controller, second controller according to
This first order, carries out the amendment of its local internal memory relevant information, successfully modified after, return to carry to the first controller and be modified as
First response message of merit result, if the first controller receives this first response message, then can be according to this first order
The local internal memory relevant information of amendment.As such, it is possible to ensure the information between the first controller and second controller at command-levels
Synchronize in real time and reliably, it is to avoid produce the situation that data are inconsistent, safeguard the normal work of computer cluster.
In one embodiment of the invention, after step silo, before step S120, the method can also include with
Lower step:
Whether the type determining the first order is default synchronizing information type, if it is, perform step S120.
It is understood that in the order that sends of the client that receives of controller of storage system, some order does not has
Necessity carries out synchronizing information.So, in actual applications, the order that can preset which type needs the information that carries out same
Step.Such as, synchronizing information can be carried out for the SCSI-3PR order internally depositing into row write operation.
In embodiments of the present invention, after the first controller receives the first order that client sends, can first to this
One order resolves, and determines whether the type of this first order is default synchronizing information type, if it is, continue executing with
The operation of step S120.
In a kind of detailed description of the invention of the present invention, it not default synchronizing information class in the type determining the first order
During type, can perform to revise the step of local internal memory relevant information.
As such, it is possible to the communication overhead saved between the first controller and second controller.
In one embodiment of the invention, the method can also comprise the following steps:
If not receiving the heartbeat message of second controller in setting the time period, or receive second controller
Event of failure notice message, then be managed the logical volume that second controller is corresponding.
In actual applications, heartbeat message can be sent out between the first controller and second controller mutually to know depositing of the other side
In state, if the first controller does not receives the heartbeat message of second controller in setting the time period, then may determine that the
Two controllers break down, and can be managed the logical volume that second controller is corresponding.
Or, second controller, when it breaks down, can send event of failure notice message to the first controller, the
One controller notifies message according to this event of failure, it may be determined that second controller breaks down, can be to second controller pair
The logical volume answered is managed.
Because the operation by step S110 to step S130, it is possible to achieve information between the first controller and second controller
Synchronization.When second controller breaks down, the first controller can logical volume that directly adapter second controller is corresponding, continue
Continue and carry out related work.Equally, when the first controller breaks down, second controller can also direct adapter the first controller
Corresponding logical volume, proceeds related work.In this manner it is ensured that the normal work of computer cluster.
In one embodiment of the present of invention, the method can also comprise the following steps:
If receiving the synchronizing information request that second controller sends, then interrupt the logical volume corresponding to second controller
Management, and to second controller return all of information to be synchronized so that second controller according to information updating to be synchronized this
Ground internal memory relevant information, and the logical volume of self correspondence is managed.
When second controller breaks down, the first controller can logical volume that directly adapter second controller is corresponding.When
Second controller restart recovery normal after, synchronizing information request can be sent to the first controller, the first controller receives the
After the synchronizing information request that two controllers send, the management of the logical volume corresponding to second controller can be interrupted, and to second
Controller returns all of information to be synchronized, re-starts synchronizing information, and second controller is local according to information updating to be synchronized
After internal memory relevant information, the logical volume of self correspondence is managed.Achieve high availability.
In embodiments of the present invention, before the first controller and second controller carry out synchronizing information, can exist in advance
First controller and second controller build a message respectively and sends thread cthread and a message sink thread
Sthread, the first controller and second controller, when carrying out message transmission, can call bottom communication module, i.e. dcomm mould
Block.
Detailed process can be described as follows:
Carried out constructing order, storage allocation by the program main thread of the first controller, added enqueue etc. and operate, and wake up the up
The message of one controller sends thread.This message send thread by first order take out, call bottom communication module, by this first
Order is sent to second controller.
Second controller receives the first order, and wakeup message receiving thread, message sink line by bottom communication module
After internal memory relevant information is modified by journey, wakeup message sends thread, and message sends thread and generates corresponding response message,
Call bottom communication module and this response message is sent to the first controller.
After first controller receives, by bottom communication module, the response message that second controller sends, wake up this locality up and disappear
Breath receiving thread, processes this response message, and response result is submitted to program main thread, to determine whether to carry out local internal memory
The amendment of relevant information.
If second controller breaks down, the first controller can logical volume corresponding to adapter second controller.
After second controller is restarted, synchronizing information request command bag can be generated, be then wake up message and send thread, disappear
Breath sends thread dispatching bottom communication module, and synchronizing information request command bag is sent to the first controller.
After first controller receives synchronizing information request command bag, the solution of order can be carried out with message call receiving thread
Analysis, and judge command type, after being found to be synchronizing information request, send to program main thread at once and interrupt.Program main thread connects
Have no progeny in receiving, interrupt the management of the logical volume corresponding to second controller, and generate synchronizing information response bag, this synchronizing information
Response bag can carry all of information to be synchronized, and wakeup message sends thread, calls bottom communication module by all of
Information to be synchronized is sent to second controller.
After second controller receives information to be synchronized, carry out synchronizing information, and the logical volume of self correspondence is managed
Reason.
Corresponding to above method embodiment, the embodiment of the present invention additionally provides a kind of synchronizing information device, and this device should
For the first controller, the first controller is any one controller in storage system, in the first controller and storage system
Second controller be mutually redundant.A kind of synchronizing information device described below can with above-described a kind of information synchronization method
Mutually to should refer to.
Shown in Figure 2, this device can include with lower module:
Order receiver module 210, for receiving the first order that client sends；
Order sending module 220, for being sent to second controller, so that second controller is according to first by the first order
Order, carries out the amendment of internal memory relevant information, if successfully modified, then returns the first response letter carrying successfully modified result
Breath；
Information modified module 230, for when receiving the first response message that second controller returns, according to the first life
Locally associated memory information is revised in order.
The device that the application embodiment of the present invention is provided, as the first control of any one controller in storage system
Device receive client send first order time, by this first order be sent to second controller, second controller according to
This first order, carries out the amendment of its local internal memory relevant information, successfully modified after, return to carry to the first controller and be modified as
First response message of merit result, if the first controller receives this first response message, then can be according to this first order
The local internal memory relevant information of amendment.As such, it is possible to ensure the information between the first controller and second controller at command-levels
Synchronize in real time and reliably, it is to avoid produce the situation that data are inconsistent, safeguard the normal work of computer cluster.
In a kind of detailed description of the invention of the present invention, this device also includes that information type determines module, is used for:
After receiving the first order that client sends, the first order is sent to second controller before, determine the
Whether the type of one order is default synchronizing information type；If it is, trigger command sending module 220.
In a kind of detailed description of the invention of the present invention, information type determines module, is additionally operable to:
When the type determining the first order is not default synchronizing information type, the directly relevant letter of the local internal memory of amendment
Breath.
In a kind of detailed description of the invention of the present invention, device also includes logical volume management module, is used for:
When not receiving the heartbeat message of second controller in setting the time period, or receiving second controller
During event of failure notice message, the logical volume that second controller is corresponding is managed.
In a kind of detailed description of the invention of the present invention, device also includes recovery management module, is used for:
When receiving the synchronizing information request that second controller sends, interrupt the logical volume corresponding to second controller
Management, and return all of information to be synchronized to second controller, so that second controller is local according to information updating to be synchronized
Internal memory relevant information, and the logical volume of self correspondence is managed.
In this specification, each embodiment uses the mode gone forward one by one to describe, and what each embodiment stressed is and other
The difference of embodiment, between each embodiment, same or similar part sees mutually.For filling disclosed in embodiment
For putting, owing to it corresponds to the method disclosed in Example, so describe is fairly simple, relevant part sees method part
Illustrate.
Professional further appreciates that, in conjunction with the unit of each example that the embodiments described herein describes
And algorithm steps, it is possible to electronic hardware, computer software or the two be implemented in combination in, in order to clearly demonstrate hardware and
The interchangeability of software, the most generally describes composition and the step of each example according to function.These
Function performs with hardware or software mode actually, depends on application-specific and the design constraint of technical scheme.Specialty
Technical staff specifically should can be used for using different methods to realize described function to each, but this realization should not
Think beyond the scope of this invention.
The method described in conjunction with the embodiments described herein or the step of algorithm can direct hardware, processor be held
The software module of row, or the combination of the two implements.Software module can be placed in random access memory (RAM), internal memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, depositor, hard disk, moveable magnetic disc, CD-ROM or technology
In any other form of storage medium well known in field.
Above a kind of information synchronization method provided by the present invention and device are described in detail.Used herein
Principle and the embodiment of the present invention are set forth by specific case, and the explanation of above example is only intended to help to understand this
The method of invention and core concept thereof.It should be pointed out that, for those skilled in the art, without departing from this
On the premise of bright principle, it is also possible to the present invention is carried out some improvement and modification, these improve and modification also falls into present invention power
In the protection domain that profit requires.
Claims (10)
1. an information synchronization method, it is characterised in that be applied to the first controller, described first controller is in storage system
Any one controller, described first controller is mutually redundant with the second controller in described storage system, described method
Including:
Receive the first order that client sends；
Described first order is sent to described second controller, so that described second controller is according to described first order, enters
The amendment of row internal memory relevant information, if successfully modified, then returns the first response message carrying successfully modified result；
If receiving described first response message that described second controller returns, then according to described first order amendment this locality
Associated internal memory information.
Method the most according to claim 1, it is characterised in that after the first order that described reception client sends,
Described by described first order be sent to second controller before, described method also includes:
Determine whether the described first type ordered is default synchronizing information type；
If it is, perform the described step that described first order is sent to described second controller.
Method the most according to claim 2, it is characterised in that described method also includes:
When determining that the described first type ordered is not default synchronizing information type, directly perform the local internal memory of described amendment
The step of relevant information.
4. according to the method described in any one of claims 1 to 3, it is characterised in that described method also includes:
If not receiving the heartbeat message of described second controller in setting the time period, or receive described second control
The event of failure notice message of device, then be managed the logical volume that described second controller is corresponding.
Method the most according to claim 4, it is characterised in that described method also includes:
If receiving the synchronizing information request that described second controller sends, then interrupt corresponding the patrolling of described second controller
Collect the management of volume, and return all of information to be synchronized to described second controller, so that described second controller is according to described
Information updating this locality to be synchronized internal memory relevant information, and the logical volume of self correspondence is managed.
6. a synchronizing information device, it is characterised in that be applied to the first controller, described first controller is in storage system
Any one controller, described first controller is mutually redundant with the second controller in described storage system, described device
Including:
Order receiver module, for receiving the first order that client sends；
Order sending module, for described first order is sent to described second controller, so that described second controller root
According to described first order, carry out the amendment of internal memory relevant information, if successfully modified, then return and carry the of successfully modified result
One response message；
Information modified module, for when receiving described first response message that described second controller returns, according to described
Locally associated memory information is revised in first order.
Device the most according to claim 6, it is characterised in that described device also includes that information type determines module, is used for:
Described reception client send first order after, described by described first order be sent to second controller it
Before, determine whether the type of described first order is default synchronizing information type；If it is, trigger described order to send mould
Block.
Device the most according to claim 7, it is characterised in that described information type determines module, is additionally operable to:
When determining that the described first type ordered is not default synchronizing information type, the directly relevant letter of the local internal memory of amendment
Breath.
9. according to the device described in any one of claim 6 to 8, it is characterised in that described device also includes logical volume management mould
Block, is used for:
When not receiving the heartbeat message of described second controller in setting the time period, or control receiving described second
When the event of failure of device notifies message, the logical volume that described second controller is corresponding is managed.
Device the most according to claim 9, it is characterised in that described device also includes recovery management module, is used for:
When receiving the synchronizing information request that described second controller sends, interrupt the logic corresponding to described second controller
Volume management, and to described second controller return all of information to be synchronized so that described second controller according to described in treat
Synchronizing information updates local internal memory relevant information, and is managed the logical volume of self correspondence.
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| CN109471811A (en) * | 2018-11-16 | 2019-03-15 | 郑州云海信息技术有限公司 | The read method and device of information are stored on a kind of backboard |
| CN110557399A (en) * | 2019-09-12 | 2019-12-10 | 苏州浪潮智能科技有限公司 | Management data synchronization method and device, storage equipment and readable storage medium |
| CN111212123A (en) * | 2019-12-26 | 2020-05-29 | 天津中科曙光存储科技有限公司 | ZooKeeper-based Lunmap management method |
| CN111984474A (en) * | 2020-09-27 | 2020-11-24 | 苏州浪潮智能科技有限公司 | Method, system and equipment for recovering double-control cluster fault |
| CN111984474B (en) * | 2020-09-27 | 2022-08-19 | 苏州浪潮智能科技有限公司 | Method, system and equipment for recovering double-control cluster fault |
| CN112463369A (en) * | 2020-11-20 | 2021-03-09 | 苏州浪潮智能科技有限公司 | Memory adjustment method, device, equipment and computer readable storage medium |
| CN112463369B (en) * | 2020-11-20 | 2022-07-22 | 苏州浪潮智能科技有限公司 | Memory adjustment method, device, equipment and computer readable storage medium |
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