CN106527978B - A kind of multi-controller implementation method based on cyclic annular virtual dual control - Google Patents
A kind of multi-controller implementation method based on cyclic annular virtual dual control Download PDFInfo
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- CN106527978B CN106527978B CN201610912391.3A CN201610912391A CN106527978B CN 106527978 B CN106527978 B CN 106527978B CN 201610912391 A CN201610912391 A CN 201610912391A CN 106527978 B CN106527978 B CN 106527978B
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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
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/0614—Improving the reliability of storage systems
-
- 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
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/0604—Improving or facilitating administration, e.g. storage management
-
- 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
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/0604—Improving or facilitating administration, e.g. storage management
- G06F3/0607—Improving or facilitating administration, e.g. storage management by facilitating the process of upgrading existing storage systems, e.g. for improving compatibility between host and storage device
-
- 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
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/061—Improving I/O performance
-
- 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
- G06F3/0629—Configuration or reconfiguration of storage systems
-
- 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
-
- 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
- G06F3/0662—Virtualisation aspects
-
- 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
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/0671—In-line storage system
- G06F3/0683—Plurality of storage devices
- G06F3/0689—Disk arrays, e.g. RAID, JBOD
Abstract
The invention discloses a kind of implementation methods of multi-controller based on cyclic annular virtual dual control, one physical disk controller is mapped to two Virtual Controllers by this method, the Virtual Controller of multiple physical disk controller mappings constitutes Virtual Controller ring, two Virtual Controllers that are adjacent and being not belonging to the same physical disk controller form one group of virtual dual control, constitute cyclic annular virtual dual control；For storage volume by the virtual dual control mapping access of multiple groups, the type that every group of virtual dual control is requested based on the received carries out classification processing.Two Virtual Controllers in every group of virtual dual control mutually form mirror image；When increasing or removing physical disk controller, system can be reconfigured quickly as a new Virtual Controller ring, and redistribute to the load of controller.This method can improve system read-write performance, while guarantee the reliability and load balancing of data；It is with good expansibility and troubleshooting capability.
Description
Technical field
The invention belongs to technical field of information storage, more specifically, a kind of multi-controller based on cyclic annular virtual dual control is real
Existing method.
Background technique
With the rapid development of information technology, the explosive growth that information content occurs, the storage system of data center is by face
Face more acute challenge.For 2002, one year produces the information of about 5EB, wherein the 92% big portion of new information
Divide and be stored in disk, large capacity disc has become current essential storage medium.
Disk array is that multiple disks are formed an array, externally provides large capacity, highly reliable, performance is relatively high
Data storage service.Memory technology based on raid-array RAID just obtains within the storage system from being born it
Very extensive application, because can guarantee the reliability of system using the storage system of RAID structure and provide due to disk
The recovery of data is lost caused by failure.The high-reliability storage of important information is very crucial, according to external IT Policy
Compliance Group report display, loss of data can cause tremendous influence to business event, publicly disclose loss of data
Estimated its client amount and related income of will lead to of enterprise reduce by 8%；For marketing enterprises, per share share price can decline 8%；
One user logging of average every loss will cause 100 dollars of extraneoas loss.
In the prior art, although common disk array is capable of providing the data storage service of large capacity, but systemic
It can be unable to satisfy present information industry, so storage array is gradually evolved into blending agent storage array by disk array.
Using the storage system of RAID structure to internal data reliability with higher, but its controller read or write speed and reliability
Still it is unable to satisfy the high I/O bandwidth and high reliability demand of blending agent storage array.So, it would be desirable to one kind has more
The storage array framework of high I/O performance and higher reliability.
Summary of the invention
Aiming at the above defects or improvement requirements of the prior art, the present invention provides a kind of based on the more of cyclic annular virtual dual control
Controller implementation method is sufficiently sent out its object is to meet the high I/O bandwidth of blending agent storage array and high reliability demand
Wave blending agent storage array performance.
To achieve the above object, according to one aspect of the present invention, a kind of more controls based on cyclic annular virtual dual control are provided
Device implementation method processed, includes the following steps:
(1) two or more physical disk controllers are used, each physical disk controller is mapped to two
Virtual Controller；The Virtual Controller of multiple physical disk controllers mapping constitutes Virtual Controller ring, adjacent and be not belonging to same
Two Virtual Controllers of one physical disk controller form one group of virtual dual control；The virtual dual control of multiple groups joins end to end as ring
The virtual dual control of shape；
(2) data that client accesses as needed select corresponding virtual dual control to establish virtual link, by described
The data of the virtual dual control mapping access storage volumes of multiple groups；
(3) type that every group of virtual dual control is requested based on the received carries out classification processing: physical disk controller is passed
The write request come is responsible for receiving and processing request with a Virtual Controller for organizing virtual dual control, another Virtual Controller is standby
Part is responsible for receiving and processing the write buffer of the Virtual Controller of request；Two mutual shapes of Virtual Controller in every group of virtual dual control
It is mirrored into；One group of virtual dual control is made of two Virtual Controllers, when one of Virtual Controller processing write requests, in addition one
What a Virtual Controller will back up the Virtual Controller writes data；After one of Virtual Controller failure, to failure
The Virtual Controller that Virtual Controller write backup can substitute the request that the Virtual Controller processing of failure receives, and right
Data are restored；For the read request that physical disk controller transmits, virtual dual control first it is respective it is data cached in look into
It looks for, if cache hit directly returns to request data, read request is issued to disk memory array processing if being not hit by.
Further, the cyclic annular virtual dual control can be reconstructed into one newly when increasing or removing physical disk controller
Virtual Controller ring, and the load of controller is carried out again balanced.The more performances of physical disk controller number are better, because
It can be evenly distributed in each virtual dual control for the load of each system.
Further, the step (3) includes following sub-step:
(3-1) judges the request type received, then enters step if read request (3-2), then enters if write request and walks
Suddenly (3-5)；
(3-2) judges whether read request hits in caching, enters step (3-4) if hit, if being not hit by into step
Suddenly (3-3)；
Read request is issued to disk memory array by (3-3), and Magnetic Disk Controler can be deposited by storage array indirect control
Storage volume, the data strip where disk memory array read requests data enter step (3-4) into caching；
(3-4) reads the request data of caching and returns the result, ending request；
(3-5) construction mirrored write request is sent to backup controller, carries out the backup of mirror image write buffer, and then processing, which is write, asks
It asks；
(3-6) judges whether write request hits in caching, enters step (3-7) if hit, if being not hit by into step
Suddenly (3-8)；
Request data is write direct caching by (3-7), enters step (3-9)；
Write request is issued to disk array by (3-8), the data strip where disk array reading request data to caching
In, enter step (3-7)；
(3-9) after caching is written successfully and standby virtual controller processing mirrored write request is successful, returning response is simultaneously tied
Beam request.
Further, the step (3-5) includes following sub-step:
After a Virtual Controller in (3-5-1) one group of virtual dual control receives write request, as master controller processing
Request, and with another Virtual Controller is organized as backup controller, handle the mirrored write request that master controller issues；
(3-5-2) standby virtual controller receives the mirrored write request that main Virtual Controller issues, by mirrored write request plus
Enter the processing queue of standby virtual controller；
(3-5-3) backup controller handles mirrored write request, and processing result is returned to main Virtual Controller.
Further, the present invention can flexibly increase or decrease physical disk controller, increase or decrease physical disk control
Device operation includes following sub-step:
(4-1) judges action type, to increase physical disk controller, (4-2) is entered step, to remove physics magnetic
Disk controller then enters step (4-5).
The position of the physical disk controller of (4-2) selection addition, two physical disk controllers of Xiang Xianglin send control
Device addition request processed；
After (4-3) adjacent physical disk controller receives controller addition request, cancel corresponding virtual dual control combination,
Connection request is sent to newly added physical disk controller；
After (4-4) newly added physical disk controller receives the connection request of contiguous physical Magnetic Disk Controler, mapping
Two Virtual Controllers will be respectively formed with the virtual controlling of adjacent two physical disk controllers mapping it is new virtual double
Control, enters step (4-8)；
(4-5) selects the physical disk controller to be removed, and two physical disk controllers of Xiang Xianglin send controller
Remove request；
After (4-6) contiguous physical Magnetic Disk Controler receives controller removal request, cancel corresponding virtual dual control combination, together
When to adjacent another physical disk controller of removed controller send connection request；
After two (4-7) adjacent physical disk controllers receive mutual connection request, corresponding Virtual Controller
Form new virtual dual control, all I/O request of the catcher physical disk controller to be removed；
(4-8) remaining physical disk controller re-forms a cyclic annular Virtual Controller, and to each physical disk control
I/O load between device processed carries out again balanced.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, can obtain down and show
Beneficial effect；
(1) the multi-controller implementation method provided by the invention based on cyclic annular virtual dual control, using Virtual Controller technology,
Each physical disk controller is mapped to two Virtual Controllers, the form pipe of cyclic annular virtual dual control is used between controller
It manages, two Virtual Controllers in every group of virtual dual control mutually form mirror image, not only improve system read-write performance, while also guaranteeing
The reliability of data；
(2) the multi-controller implementation method provided by the invention based on cyclic annular virtual dual control, storage volume are virtual by multiple groups
Dual control mapping accesses, and the load between active balance controller improves the degree of parallelism of request processing, provides higher I/O service
Ability；
(3) the multi-controller implementation method provided by the invention based on cyclic annular virtual dual control, passes through cyclic annular Virtual Controller
Structure forms the virtual dual control of multiple groups, and when increasing or removing physical disk controller, system can be reconfigured quickly as a new void
Quasi- controller ring, is with good expansibility and troubleshooting capability.
Detailed description of the invention
Fig. 1 is the virtual dual control structural schematic diagram of ring-type in the embodiment of the present invention；
Fig. 2 is the mapping access schematic diagram of the storage volume and virtual dual control in the embodiment of the present invention；
Fig. 3 is the read-write operation flow chart in the embodiment of the present invention；
Fig. 4 is the Virtual Controller mirror back-up write buffer schematic diagram in the embodiment of the present invention；
Fig. 5 is removal and addition physics Magnetic Disk Controler schematic diagram in the embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Not constituting a conflict with each other can be combined with each other.
Integral Thought of the invention is: using Virtual Controller technology, each physical disk controller is mapped to two
A Virtual Controller forms cyclic annular Virtual Controller structure, forms multiple virtual dual controls；Using cyclic annular virtual double between controller
The format management of control, two Virtual Controllers in every group of virtual dual control mutually form mirror image, improve readwrite performance and data can
By property；The addition of physical disk controller rapidly and efficiently may be implemented by multiple virtual dual controls that cyclic annular Virtual Controller forms
Or remove, it is with good expansibility and troubleshooting capability.
It is cyclic annular virtual dual control structural schematic diagram in the embodiment of the present invention shown in Fig. 1；Wherein, A, B, C and D are four objects
Magnetic Disk Controler is managed, each physical disk controller maps out two Virtual Controllers, and the Virtual Controller mapped out such as A is A1
And A2.Then A1 and D1, D2 and C1 are formed, C2 and B2, B1 and A2 this four groups of virtual dual controls, two void in every group of virtual dual control
Quasi- controller mutually form mirror image (each Virtual Controller has a logical place, by logical place table be known that with
The adjacent Virtual Controller of the Virtual Controller, it is adjacent and not by a physical disk controller fictionalize Lai two virtual controls
Device meeting Auto-matching processed becomes one group of virtual dual control).The design of virtual dual control is and empty with group it is possible to prevente effectively from Single Point of Faliure
Quasi- double aerial Virtual Controllers are mutually mirrored into, and are backed up mutually, are further increased the reliability of data.
It is the mapping access schematic diagram of storage volume and virtual dual control in the embodiment of the present invention shown in Fig. 2；There are 2 visitors in figure
Family end, each client may be connected to arbitrary virtual dual control, as client each in figure is connected with 2 virtual dual controls.
Storage pool is divided into 10 volumes, and each virtual dual control connects several storage volume, and such client can be by selecting corresponding void
Quasi- dual control accesses global data.
Multi-controller implementation method based on cyclic annular virtual dual control provided by embodiment, comprising the following steps:
(1) two or more physical disk controllers are used, each physical disk controller is mapped to two
Software Virtual Controller；The Virtual Controller of multiple physical disk controllers mapping constitutes Virtual Controller ring, adjacent and do not belong to
One group of virtual dual control is formed in two Virtual Controllers of the same physical disk controller；The virtual dual control of multiple groups is joined end to end into
For cyclic annular virtual dual control；
(2) client passes through the data accessed as needed, selects corresponding virtual dual control to establish virtual link, passes through institute
The data of the virtual dual control mapping access storage volumes of the multiple groups stated；
(3) type that every group of virtual dual control is requested based on the received carries out classification processing: physical disk controller is passed
The write request come is responsible for receiving and processing request, another Virtual Controller mirror with a Virtual Controller for organizing virtual dual control
As backup is responsible for receiving and processing the write buffer of the Virtual Controller of request；Two Virtual Controller phases in every group of virtual dual control
Mutually form mirror image；For the read request that physical disk controller transmits, virtual dual control first in respective data cached middle lookup,
If cache hit directly returns to request data, read request is issued to disk memory array processing if being not hit by；
(4) cyclic annular virtual dual control can be reconstructed into a new virtual controlling when increasing or removing physical disk controller
Device ring, and the load of controller is carried out again balanced.The more performances of physical disk controller number are better, because of each system
Load can be evenly distributed in each virtual dual control.
It is read-write operation flow chart in the embodiment of the present invention shown in Fig. 3；Memory array system can select suitably to control first
Device processed sends request, after request is issued to cache module, carries out classification processing to request.
In embodiment, step (3) includes following sub-step:
(3-1) judges the request type issued, then enters step if read request (3-2), then enters if write request and walks
Suddenly (3-5)
(3-2) judges whether read request hits in caching, enters step (3-4) if hit, if being not hit by into step
Suddenly (3-3)
Read request is issued to disk memory array by (3-3), and Magnetic Disk Controler can be deposited by storage array indirect control
Storage volume, the data strip where disk memory array read requests data enter step (3-4) into caching；
(3-4) reads the request data of caching and returns the result, ending request；
(3-5) construction mirrored write request is sent to standby virtual controller, carries out the backup of mirror image write buffer, then processing is write
Request
(3-6) judges whether write request hits in caching, enters step (3-7) if hit, if being not hit by into step
Suddenly (3-8)
Request data is write direct caching by (3-7), enters step (3-9)；
(3-8) request is issued to disk array, and disk array reads request item and takes in caching, enters step (3-7)
(3-9) after caching is written successfully and backup server processing mirrored write request is successful, returning response simultaneously terminates to ask
It asks.
Wherein, the process of step (3-5) is as shown in figure 4, include following sub-step:
It, can be as at master controller after a Virtual Controller in (3-5-1) one group of virtual dual control receives write request
Reason request, and another Virtual Controller will be used as backup controller, the mirrored write request that processing master controller issues；
(3-5-2) standby virtual controller receives the mirrored write request that main Virtual Controller issues, by mirrored write request plus
Enter the processing queue of standby virtual controller；
(3-5-3) backup controller handles mirrored write request, and processing result is returned to main Virtual Controller.
It is the removal in the embodiment of the present invention and addition physics Magnetic Disk Controler schematic diagram, each physical disk shown in Fig. 5
Controller is mainly made of tri- parts Cache, CPU and PCIe, and CTL1~4 respectively indicate physical disk controller 1~4；
Wherein, each physical disk controller is mapped to two Virtual Controllers, adjacent and be not belonging to the control of unified physics disk
Virtual Controller matches two-by-two, forms virtual dual control, and two Virtual Controllers in same group of virtual dual control are mutually mirrored into, mutually
Backup write buffer backs up mutually write buffer so its corresponding physical controller also can be mutually mirrored into.When CTL3 breaks down
Afterwards, CTL3 is removed from system, is requested by the I/O that CTL4 takes over CTL3, the data backup of CTL2 is gone among CTL4, works as CTL3
After the completion of reparation, CTL3 is added in system again；
In embodiment, step (4) includes following sub-step
(4-1) enters step (4-2) when needing to increase physical disk controller, when needing to remove physical disk controller,
Then enter step (4-5)；
The position of the physical disk controller of (4-2) selection addition, two physical disk controllers of Xiang Xianglin send control
Device addition request processed；
After (4-3) physical disk controller receives the addition request, cancel corresponding virtual dual control combination, to new addition
Physical disk controller send connection request；
After (4-4) newly added physical disk controller receives the connection request of neighbor controller, two void of mapping
Quasi- controller will be respectively formed new virtual dual control with the Virtual Controller of adjacent two physical disk controllers mapping, enter
Step (4-8)
(4-5) selects the physical disk controller to be removed, and two physical disk controllers of Xiang Xianglin send controller
Remove request；
After (4-6) contiguous physical Magnetic Disk Controler receives the removal request of physical disk controller, cancel corresponding virtual pair
Control combination, while connection request is sent to another adjacent physical disk controller of removed controller；
After two (4-7) adjacent physical disk controllers receive mutual connection request, corresponding virtual controlling shape
The virtual dual control of Cheng Xin takes over all I/O request for the physical disk controller that will be removed；
(4-8) physical disk controller re-forms a cyclic annular Virtual Controller, and to each physical disk controller
Between I/O load redistributed.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (5)
1. a kind of multi-controller implementation method based on cyclic annular virtual dual control, which comprises the steps of:
(1) two or more physical disk controllers are used, each physical disk controller is mapped to two virtually
Controller；The Virtual Controller of multiple physical disk controllers mapping constitutes Virtual Controller ring, adjacent and be not belonging to same
Two Virtual Controllers of physical disk controller form one group of virtual dual control；The virtual dual control of multiple groups, which joins end to end, becomes cyclic annular empty
Quasi- dual control；
(2) data that client accesses as needed select corresponding virtual dual control to establish virtual link, pass through the multiple groups
The data of virtual dual control mapping access storage volumes；
(3) type that every group of virtual dual control is requested based on the received carries out classification processing: physical disk controller is transmitted
Write request is responsible for receiving and processing request with a Virtual Controller for organizing virtual dual control, and the backup of another Virtual Controller is negative
Duty receives and processes the write buffer of the Virtual Controller of request；Two Virtual Controllers in every group of virtual dual control mutually form mirror
Picture；For the read request that physical disk controller transmits, virtual dual control is first in respective data cached middle lookup, if caching
Hit directly returns to request data, and read request is issued to disk memory array processing if being not hit by.
2. the method according to claim 1, wherein the cyclic annular virtual dual control is increasing or is removing physical disk
When controller, it can be reconstructed into a new Virtual Controller ring, and the load of controller is carried out again balanced.
3. method according to claim 1 or 2, which is characterized in that the step (3) includes following sub-step:
(3-1) judges the request type received, then enters step (3-2) if read request, then enters step (3- if write request
5)；
(3-2) judges whether read request hits in caching, enters step (3-4) if hit, enters step (3- if being not hit by
3)；
Read request is issued to disk memory array by (3-3), and the data strip where disk memory array read requests data arrives
In caching, (3-4) is entered step；
(3-4) reads the request data of caching and returns the result, ending request；
(3-5) construction mirrored write request is sent to backup controller, carries out the backup of mirror image write buffer, then processing write requests；
(3-6) judges whether write request hits in caching, enters step (3-7) if hit, enters step (3- if being not hit by
8)；
Request data is write direct caching by (3-7), enters step (3-9)；
Write request is issued to disk array by (3-8), and disk array reads the data strip where request data into caching, into
Enter step (3-7)；
(3-9) after caching is written successfully and standby virtual controller processing mirrored write request is successful, returning response simultaneously terminates to ask
It asks.
4. according to the method described in claim 3, it is characterized in that, the step (3-5) includes following sub-step:
After a Virtual Controller in (3-5-1) one group of virtual dual control receives write request, requested as master controller processing,
And with another Virtual Controller is organized as backup controller, handle the mirrored write request that master controller issues；
(3-5-2) standby virtual controller receives the mirrored write request that main Virtual Controller issues, and mirrored write request is added standby
The processing queue of part Virtual Controller；
(3-5-3) backup controller handles mirrored write request, and processing result is returned to main Virtual Controller.
5. according to the method described in claim 2, it is characterized in that, increasing or decreasing physical disk controller includes following sub-step
It is rapid:
(4-1) judges action type, to increase physical disk controller, (4-2) is entered step, to remove physical disk control
Device processed then enters step (4-5)；
The position of the physical disk controller of (4-2) selection addition, two physical disk controllers of Xiang Xianglin send controller
Addition request；
After (4-3) adjacent physical disk controller receives controller addition request, cancel corresponding virtual dual control combination, Xiang Xin
The physical disk controller of addition sends connection request；
After (4-4) newly added physical disk controller receives the connection request of contiguous physical Magnetic Disk Controler, the two of mapping
A Virtual Controller will be respectively formed new virtual dual control with the virtual controlling of adjacent two physical disk controllers mapping, into
Enter step (4-8)；
(4-5) selects the physical disk controller to be removed, and two physical disk controllers of Xiang Xianglin send controller and remove
Request；
After (4-6) contiguous physical Magnetic Disk Controler receives controller removal request, cancels corresponding virtual dual control and combine, while to
Another adjacent physical disk controller of removed controller sends connection request；
After two (4-7) adjacent physical disk controllers receive mutual connection request, corresponding Virtual Controller is formed
New virtual dual control, all I/O request of the catcher physical disk controller to be removed；
(4-8) remaining physical disk controller re-forms a cyclic annular Virtual Controller, and to each physical disk controller
Between I/O load carry out again it is balanced.
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| CN107621996A (en) * | 2017-09-26 | 2018-01-23 | 郑州云海信息技术有限公司 | Cache backup method, fault handling method, system, device and storage medium |
| 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 |
| CN114415981B (en) * | 2022-03-30 | 2022-07-15 | 苏州浪潮智能科技有限公司 | IO processing method and system of multi-control storage system and related components |
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| CN1808401A (en) * | 2005-01-20 | 2006-07-26 | 英业达股份有限公司 | Data accessing system and method capable of recognizing disk cache content validity |
| CN101118478A (en) * | 2007-09-10 | 2008-02-06 | 杭州华三通信技术有限公司 | Caching management system |
| CN103092786A (en) * | 2013-02-25 | 2013-05-08 | 浪潮(北京)电子信息产业有限公司 | Double-control double-active storage control system and method |
| CN105573857A (en) * | 2014-10-10 | 2016-05-11 | 北京计算机技术及应用研究所 | Method and system for buffering mirror image by multi-control disk array |
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| CN1808401A (en) * | 2005-01-20 | 2006-07-26 | 英业达股份有限公司 | Data accessing system and method capable of recognizing disk cache content validity |
| CN101118478A (en) * | 2007-09-10 | 2008-02-06 | 杭州华三通信技术有限公司 | Caching management system |
| CN103092786A (en) * | 2013-02-25 | 2013-05-08 | 浪潮(北京)电子信息产业有限公司 | Double-control double-active storage control system and method |
| CN105573857A (en) * | 2014-10-10 | 2016-05-11 | 北京计算机技术及应用研究所 | Method and system for buffering mirror image by multi-control disk array |
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