CN109298837A - A kind of multi-controller caching backup method, device, equipment and readable storage medium storing program for executing - Google Patents
A kind of multi-controller caching backup method, device, equipment and readable storage medium storing program for executing Download PDFInfo
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- CN109298837A CN109298837A CN201811067417.4A CN201811067417A CN109298837A CN 109298837 A CN109298837 A CN 109298837A CN 201811067417 A CN201811067417 A CN 201811067417A CN 109298837 A CN109298837 A CN 109298837A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0655—Vertical data movement, i.e. input-output transfer; data movement between one or more hosts and one or more storage devices
- G06F3/0658—Controller construction arrangements
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1446—Point-in-time backing up or restoration of persistent data
- G06F11/1448—Management of the data involved in backup or backup restore
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0646—Horizontal data movement in storage systems, i.e. moving data in between storage devices or systems
- G06F3/0647—Migration mechanisms
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0655—Vertical data movement, i.e. input-output transfer; data movement between one or more hosts and one or more storage devices
- G06F3/0656—Data buffering arrangements
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Abstract
The invention discloses a kind of multi-controllers to cache backup method, equipment is stored applied to multi-controller, it include: when writing data to target controller caching, the backup controller of target controller is determined according to preset cache policy, the number of backup controller is less than N and subtracts one, N indicates the controller number of current multi-controller storage equipment, and N is positive integer；Data backup to backup controller is cached, when so as to target controller failure, replaces target controller with backup controller.Wherein, the controller number that the number of backup controller is less than current multi-controller storage equipment subtracts one, the data stored in each controller cache can be reduced accordingly, to reduce the corresponding hardware cache cost of each controller and the operation of data synchronization caching, the storage performance of storage equipment is improved.Correspondingly, a kind of multi-controller caching back-up device, equipment and readable storage medium storing program for executing disclosed by the invention, similarly have above-mentioned technique effect.
Description
Technical field
The present invention relates to technical field of data storage, more specifically to a kind of multi-controller caching backup method, dress
It sets, equipment and readable storage medium storing program for executing.
Background technique
With the development of memory technology, more stringent requirements are proposed for reliability of the application scenes to storage equipment, passes
The dual controller storage equipment of system has certain limitation, such as a controller breaks down, and can lose 50% performance；
When two control all failures, service disconnection will lead to.In order to enhance the reliability of storage equipment, occurred more controls in recent years
Device stores equipment, i.e., multiple controllers, such as four controls, eight controls etc. is installed in one storage equipment, to improve storage equipment
Reliability and safety.
It should be noted that the corresponding caching of each controller in storage equipment can have backup.It is deposited in dual controller
It stores up in equipment, the caching of two controllers can back up mutually, data cached when guaranteeing one of controller failure not lose.
And in multi-controller storage equipment, the data cached of other controllers can be backed up in the corresponding caching of a controller；Such as:
In four controllers storage equipment, there are controllers 1,2,3,4, then in the caching of controller 1, it can backup controller 2,3
With 4 it is data cached, in the caching of controller 2, can backup controller 1,3 and 4 it is data cached, i.e., each controller it is slow
The data cached of controller 1,2,3 and 4 is stored in depositing.
Although the data cached implementation method for backing up other controllers in the caching of each controller can guarantee
It is data cached when breaking down not lose, but this method higher cost, each controller will install more times of caching hardware,
And the cost for caching hardware is larger；Carry out between each controller simultaneously cache synchronization data volume is larger and simultaneously operating frequency
It is numerous, the storage performance of entire storage equipment can be reduced.
Therefore, the caching hardware cost of multi-controller how is reduced, the storage performance of storage equipment is improved, is this field skill
Art personnel's problem to be solved.
Summary of the invention
The purpose of the present invention is to provide a kind of multi-controllers to cache backup method, device, equipment and readable storage medium storing program for executing,
To reduce the caching hardware cost of multi-controller, the storage performance of storage equipment is improved.
To achieve the above object, the embodiment of the invention provides following technical solutions:
A kind of multi-controller caching backup method, is applied to multi-controller and stores equipment, comprising:
When writing data to target controller caching, the standby of the target controller is determined according to preset cache policy
Part controller, the number of the backup controller are less than N and subtract one, and the N indicates the controller of current multi-controller storage equipment
Number, and the N is positive integer；
The data backup to the backup controller is cached, when so as to target controller failure, uses institute
Backup controller is stated instead of the target controller.
Wherein, the backup controller that the target controller is determined according to preset cache policy, comprising:
The data volume in each controller cache is calculated, and determines that the least controller of data volume is the Standby control
Device；Wherein, each controller cache is that the target controller that removes that the current multi-controller stores in equipment caches
Except other controller caches.
Wherein, when the number of the backup controller is equal to for the moment, using cycling backup mechanism.
Wherein, when the target controller breaks down, further includes:
Determine the target backup controller for accepting the load of the target controller, and by the load of the target controller
It is transferred to the target backup controller.
Wherein, the load by the target controller is transferred to after the target backup controller, further includes:
According to principle is not used at most recently by the Data Migration in target backup controller caching to disk.
Wherein, when the backup controller is multiple, the data in the target controller caching will be written each
Backup is primary in backup controller caching.
A kind of multi-controller caching back-up device, is applied to multi-controller and stores equipment, comprising:
Determining module, for when write data to target controller caching when, according to preset cache policy determine described in
The backup controller of target controller；The number of the backup controller is less than N and subtracts 2, and the N indicates current multi-controller storage
The controller number of equipment, and the N is positive integer；
Backup module, for caching the data backup to the backup controller, so that the target controller goes out
When existing failure, the target controller is replaced with the backup controller.
Wherein, the determining module is specifically used for:
The data volume in each controller cache is calculated, and determines that the least controller of data volume is the Standby control
Device；Wherein, each controller cache is that the target controller that removes that the current multi-controller stores in equipment caches
Except other controller caches.
A kind of multi-controller caching alternate device, comprising:
Memory, for storing computer program；
Processor realizes the caching backup of multi-controller described in above-mentioned any one when for executing the computer program
The step of method.
A kind of readable storage medium storing program for executing is stored with computer program, the computer program quilt on the readable storage medium storing program for executing
Processor realizes the step of multi-controller described in above-mentioned any one caches backup method when executing.
By above scheme it is found that a kind of multi-controller provided in an embodiment of the present invention caches backup method, it is applied to more
Controller stores equipment, comprising: when writing data to target controller caching, determines the mesh according to preset cache policy
The backup controller of mark controller, the number of the backup controller are less than N and subtract one, and the N indicates current multi-controller storage
The controller number of equipment, and the N is positive integer；The data backup to the backup controller is cached, so as to described
When target controller breaks down, the target controller is replaced with the backup controller.
As it can be seen that the method has determined the number of backup controller in preset cache policy, that is, caching number is determined
According to backup number.This method limits, and the number of backup controller is less than the controller number of current multi-controller storage equipment
Subtract one, i.e., store equipment for four control devices, the data backed up in each controller cache are other two or one controllers
It is data cached, reduce the data volume stored in each controller cache, thus reduce the corresponding hardware cache of each controller at
This, reduces the operation of data synchronization caching, improves the storage performance of storage equipment.
Correspondingly, a kind of multi-controller caching back-up device, equipment and readable storage medium storing program for executing provided in an embodiment of the present invention,
Similarly have above-mentioned technique effect.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is that a kind of multi-controller disclosed by the embodiments of the present invention caches backup method flow chart；
Fig. 2 is that another multi-controller disclosed by the embodiments of the present invention caches backup method flow chart；
Fig. 3 is that a kind of multi-controller disclosed by the embodiments of the present invention caches back-up device schematic diagram；
Fig. 4 is that a kind of multi-controller disclosed by the embodiments of the present invention caches alternate device schematic diagram.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a kind of multi-controllers to cache backup method, device, equipment and readable storage medium storing program for executing, with
The caching hardware cost of multi-controller is reduced, the storage performance of storage equipment is improved.
Referring to Fig. 1, a kind of multi-controller caching backup method provided in an embodiment of the present invention is applied to multi-controller and stores
Equipment, comprising:
S101, when write data to target controller caching when, determine target controller according to preset cache policy
Backup controller, the number of backup controller are less than N and subtract one, and N indicates the controller number of current multi-controller storage equipment, and
N is positive integer；
S102, data backup to backup controller is cached, when so as to target controller failure, uses backup controller
Instead of target controller.
It should be noted that each controller of multi-controller storage equipment is corresponding with corresponding caching, therefore target
The corresponding caching of controller cache, that is, target controller, backup controller caching are the corresponding caching of backup controller.
In the present embodiment, the number of the backup controller of target controller is less than the control of current multi-controller storage equipment
Device number processed subtracts one, therefore stores equipment for four controllers, and caching backup method can be with are as follows: standby in the caching of controller 1
Part controller 2 and 3 it is data cached, backup controller 3 and 4 is data cached in the caching of controller 2, the caching of controller 3
Middle backup controller 4 and 1 it is data cached, backup controller 1 and 2 is data cached in the caching of controller 4.Such each control
Data cached can back up of device processed both reduces the data volume stored in caching twice, can also avoid a certain controller
Loss of data after failure.Wherein, data cached is the data stored in caching.
As it can be seen that present embodiments providing a kind of multi-controller caching backup method, the method is in preset cache policy
In the number of backup controller has been determined, that is, data cached backup number has been determined.This method limits, of backup controller
The controller number that number is less than current multi-controller storage equipment subtracts one, i.e., stores equipment for four control devices, each controller is slow
The data for depositing middle backup are the data cached of other two or one controllers, reduce the data stored in each controller cache
Amount reduces the operation of data synchronization caching, improves depositing for storage equipment to reduce the corresponding hardware cache cost of each controller
Store up performance.
The embodiment of the invention discloses another multi-controllers to cache backup method, relative to a upper embodiment, this implementation
Example has made further instruction and optimization to technical solution.
Referring to fig. 2, another multi-controller provided in an embodiment of the present invention caches backup method, deposits applied to multi-controller
Store up equipment, comprising:
S201, when writing data to target controller caching, calculate the data volume in each controller cache, and determine
The least controller of data volume is the backup controller；Wherein, each controller cache is the current multi-controller
Store other controller caches in addition to target controller caching in equipment；
S202, data backup to backup controller is cached, when so as to target controller failure, uses backup controller
Instead of target controller.
In the present embodiment, determine that in addition to target controller, other least controllers of data volume in caching are
Backup controller can so make the data volume of each controller cache in multi-controller storage equipment keep in balance.
As it can be seen that present embodiments provide another multi-controller caching backup method, when writing data to target controller
When caching, the data volume in each controller cache is calculated, and determines that the least controller of data volume is the backup controller,
Unique backup controller is determined according to the service condition of current storage devices, reduces the number stored in each controller cache
According to amount, to reduce the corresponding hardware cache cost of each controller, the operation of data synchronization caching is reduced, improves storage equipment
Storage performance.
Based on above-mentioned any embodiment, it should be noted that when the number of the backup controller is equal to for the moment, using following
Ring back mechanism.
Wherein, cycling backup mechanism specifically:
The data cached of each controller is synchronously written into its backup controller, and the number of backup controller is equal to one.
By taking N number of controller as an example, the data cached backed up in synchronization of controller 1 to controller 2；The data cached backed up in synchronization of controller 2
To controller 3；And so on, the data cached backed up in synchronization of controller N to controller N+1, the caching of the last one controller
Data backed up in synchronization is to controller 1.
For above-mentioned caching backup method, when certain controller breaks down, it is negative that backup controller can take over its I/O
It carries, while the caching backup of each controller is also required to adjust, and guarantees the data cached in another control of remaining each controller
There is backup on device processed.Such as: when controller 2 breaks down, the caching of the controller 1 of its own caching and backup can be lost；
Due to the backup controller that controller 3 is controller 2, by the load of 3 adapter tube controller 2 of controller, controller 2 at this time
Load is considered as the load of controller 3 itself.In order to reduce the data cached of controller 3, can not make at most according to recently
The data cached of controller 3 is migrated to disk with principle, so as to the backup controller by controller 3 as controller 1.
Adjusting need the time again due to caching backup, above scheme do not support in very short time two or two with
The scene that upper controller breaks down simultaneously, will lead to the data cached thorough loss being not backed up at this time, and I/O is interrupted.
Cycling backup mechanism can be implemented in the following manner:
1, I/O group is formed by N number of storage control, it is 1,2 ... N that N number of controller is numbered respectively.
2, each controller is data cached, all synchronous on the controller of a number behind can retain a backup,
Wherein N controller is data cached, is retained on No. 1, this i.e. cycling backup.
3, when X controller breaks down, X+1 controller can take over its I/O load immediately, and to Fault Control
The caching Backup Data of device is marked, and is set to a part of own cache, its total caching usage amount is normal at this time
Twice of size, at this time according to recently at most be not used principle, disk will be brushed under the data of low priority, usage amount will be cached
Narrow down to normal size.
4, after load adapter tube, system can readjust caching backup, and data cached by X-1 controller backups to X+
In No. 1 controller, remaining normal controller is made to form cycling backup again, and adjust I/O load, keeps I/O load again equal
Weighing apparatus.
5, after the controller of failure restores, system can carry out the tune of caching backup again according to the mechanism of cycling backup
It is whole, and re-start load balancing.
It successively (separated in time) breaks down as can be seen that cycling backup mechanism can guarantee in N-1 controller
Still ensure that data are not lost, I/O processing is not interrupted under case conditions；And the caching hardware requirement of each controller still with it is double
Control identical, each controller only backs up the data cached of another controller, and each controller is not required to back up other N-1
A controller it is data cached.The caching hardware cost for having efficiently controlled controller, reduces multi-controller cache synchronization pair
The influence of system performance.It should be noted that the number of the backup controller in cycling backup mechanism is that for the moment, can make each control
Data volume in device caching processed reaches minimum, is preferred embodiment；Certainly, the number of the backup controller in cycling backup mechanism
It may be other quantity, the controller number simply needed to be less than in current multi-controller storage equipment subtracts one.
Based on above-mentioned any embodiment, it should be noted that when the target controller breaks down, further includes:
Determine the target backup controller for accepting the load of the target controller, and by the load of the target controller
It is transferred to the target backup controller.
Wherein, the load by the target controller is transferred to after the target backup controller, further includes:
According to principle is not used at most recently by the Data Migration in target backup controller caching to disk.
Based on above-mentioned any embodiment, it should be noted that when the backup controller is multiple, the mesh will be written
Data in mark controller caching back up primary in each backup controller caching.
A kind of multi-controller caching back-up device provided in an embodiment of the present invention is introduced below, described below one
Kind of multi-controller caching back-up device and a kind of above-described multi-controller cache backup method can be cross-referenced.
Referring to Fig. 3, a kind of multi-controller caching back-up device provided in an embodiment of the present invention is applied to multi-controller and stores
Equipment, comprising:
Determining module 301, for determining institute according to preset cache policy when writing data to target controller caching
State the backup controller of target controller；The number of the backup controller is less than N and subtracts 2, and the N indicates that current multi-controller is deposited
The controller number of equipment is stored up, and the N is positive integer；
Backup module 302, for caching the data backup to the backup controller, so as to the target controller
When failure, the target controller is replaced with the backup controller.
Wherein, the determining module is specifically used for:
The data volume in each controller cache is calculated, and determines that the least controller of data volume is the Standby control
Device；Wherein, each controller cache is that the target controller that removes that the current multi-controller stores in equipment caches
Except other controller caches.
Wherein, when the target controller breaks down, further includes:
Shift module, for determining the target backup controller for accepting the load of the target controller, and by the mesh
The load of mark controller is transferred to the target backup controller.
Wherein, further includes:
Transferring module is not used principle at most recently for basis and moves the data in target backup controller caching
Move to disk.
As it can be seen that present embodiments providing a kind of multi-controller caching back-up device, comprising: receiving module, first judge mould
Block and monitoring modular.When writing data to target controller caching, first by determining module according to preset cache policy
Determine the backup controller of target controller；The number of backup controller is less than N and subtracts 2, and N indicates that current multi-controller stores equipment
Controller number, and N be positive integer；Then backup module caches data backup to backup controller, so as to target control
When device breaks down, target controller is replaced with backup controller.Share out the work and help one another between such modules, Each performs its own functions, from
And the corresponding hardware cache cost of each controller is reduced, reduce the operation of data synchronization caching, improves storage equipment
Storage performance.
A kind of multi-controller caching alternate device provided in an embodiment of the present invention is introduced below, described below one
Kind of multi-controller caching alternate device and a kind of above-described multi-controller caches backup method and device can be cross-referenced.
Referring to fig. 4, a kind of multi-controller provided in an embodiment of the present invention caches alternate device, comprising:
Memory 401, for storing computer program；
Processor 402 realizes that multi-controller described in above-mentioned any embodiment is slow when for executing the computer program
The step of depositing backup method.
A kind of readable storage medium storing program for executing provided in an embodiment of the present invention is introduced below, one kind described below is readable to deposit
Storage media can be cross-referenced with a kind of above-described multi-controller caching backup method, device and equipment.
A kind of readable storage medium storing program for executing is stored with computer program, the computer program quilt on the readable storage medium storing program for executing
The step of multi-controller as described in above-mentioned any embodiment caches backup method is realized when processor executes.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of multi-controller caches backup method, which is characterized in that be applied to multi-controller and store equipment, comprising:
When writing data to target controller caching, the backup control of the target controller is determined according to preset cache policy
Device processed, the number of the backup controller are less than N and subtract one, and the N indicates the controller number of current multi-controller storage equipment,
And the N is positive integer；
The data backup to the backup controller is cached, when so as to target controller failure, with described standby
Part controller replaces the target controller.
2. multi-controller according to claim 1 caches backup method, which is characterized in that described according to preset caching plan
Slightly determine the backup controller of the target controller, comprising:
The data volume in each controller cache is calculated, and determines that the least controller of data volume is the backup controller；Its
In, each controller cache be the current multi-controller store in equipment in addition to target controller caching
Other controller caches.
3. multi-controller according to claim 1 caches backup method, which is characterized in that as of the backup controller
Number is equal to for the moment, using cycling backup mechanism.
4. multi-controller according to claim 1 to 3 caches backup method, which is characterized in that when the target
When controller breaks down, further includes:
It determines the target backup controller for accepting the load of the target controller, and the load of the target controller is shifted
To the target backup controller.
5. multi-controller according to claim 4 caches backup method, which is characterized in that described by the target controller
Load be transferred to after the target backup controller, further includes:
According to principle is not used at most recently by the Data Migration in target backup controller caching to disk.
6. multi-controller according to claim 1 caches backup method, which is characterized in that when the backup controller is more
When a, it is primary that the backup in each backup controller caching of the data in the target controller caching will be written.
7. a kind of multi-controller caches back-up device, which is characterized in that be applied to multi-controller and store equipment, comprising:
Determining module, for determining the target according to preset cache policy when writing data to target controller caching
The backup controller of controller；The number of the backup controller is less than N and subtracts 2, and the N indicates that current multi-controller stores equipment
Controller number, and the N be positive integer；
Backup module, for caching the data backup to the backup controller, so that event occurs in the target controller
When barrier, the target controller is replaced with the backup controller.
8. multi-controller according to claim 7 caches back-up device, which is characterized in that the determining module is specifically used
In:
The data volume in each controller cache is calculated, and determines that the least controller of data volume is the backup controller；Its
In, each controller cache be the current multi-controller store in equipment in addition to target controller caching
Other controller caches.
9. a kind of multi-controller caches alternate device characterized by comprising
Memory, for storing computer program；
Processor realizes that multi-controller as claimed in any one of claims 1 to 6 is slow when for executing the computer program
The step of depositing backup method.
10. a kind of readable storage medium storing program for executing, which is characterized in that be stored with computer program, the meter on the readable storage medium storing program for executing
Calculation machine program realizes the step of multi-controller caching backup method as claimed in any one of claims 1 to 6 when being executed by processor
Suddenly.
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| CN110262993A (en) * | 2019-06-11 | 2019-09-20 | 浙江华创视讯科技有限公司 | Input the read method and circuit, storage medium, electronic device of information |
| CN111124767A (en) * | 2019-12-29 | 2020-05-08 | 北京浪潮数据技术有限公司 | Multi-control storage device implementation method, device, equipment and readable storage medium |
| CN111399781A (en) * | 2020-04-21 | 2020-07-10 | 中国科学院光电技术研究所 | Storage method for improving reliability of real-time image recording system |
| CN115543636A (en) * | 2022-11-29 | 2022-12-30 | 苏州浪潮智能科技有限公司 | Data backup method of multiple controllers and related device |
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| CN111124767B (en) * | 2019-12-29 | 2022-03-22 | 北京浪潮数据技术有限公司 | Multi-control storage device implementation method, device, equipment and readable storage medium |
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| CN111399781B (en) * | 2020-04-21 | 2023-09-19 | 中国科学院光电技术研究所 | Storage method for improving reliability of real-time image recording system |
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