CN106911534A - A kind of live migration of virtual machine method and its system - Google Patents
A kind of live migration of virtual machine method and its system Download PDFInfo
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- CN106911534A CN106911534A CN201710113019.0A CN201710113019A CN106911534A CN 106911534 A CN106911534 A CN 106911534A CN 201710113019 A CN201710113019 A CN 201710113019A CN 106911534 A CN106911534 A CN 106911534A
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- virtual machine
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- destination host
- packet buffer
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0823—Errors, e.g. transmission errors
- H04L43/0829—Packet loss
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45504—Abstract machines for programme code execution, e.g. Java virtual machine [JVM], interpreters, emulators
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/48—Program initiating; Program switching, e.g. by interrupt
- G06F9/4806—Task transfer initiation or dispatching
- G06F9/4843—Task transfer initiation or dispatching by program, e.g. task dispatcher, supervisor, operating system
- G06F9/485—Task life-cycle, e.g. stopping, restarting, resuming execution
- G06F9/4856—Task life-cycle, e.g. stopping, restarting, resuming execution resumption being on a different machine, e.g. task migration, virtual machine migration
-
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
- G06F2009/4557—Distribution of virtual machine instances; Migration and load balancing
Abstract
The invention discloses a kind of live migration of virtual machine method and its system, migrated to destination host from source host including control virtual machine, and packet buffer queue is set up on destination host, when the migration for detecting virtual machine completes remaining time reaches predetermined threshold value, the forward table of physical switches is updated according to the IP address of virtual machine in destination host；The message that client sends is sent the packet buffer queue to destination host and is cached by physical switches；After the completion of migration, whole messages of packet buffer queue are sent in the virtual machine to destination host, processed by the virtual machine on destination host, and destroy packet buffer queue.The present invention can as far as possible avoid message dropping occur in transition process, reduce the situation appearance that Network is interrupted, and improve the reliability of live migration of virtual machine process.
Description
Technical field
The present invention relates to virtualize technical field of network management, more particularly to a kind of live migration of virtual machine method and its it is
System.
Background technology
Virtual machine is operated on main frame, when main frame failure, resource allocation inequality, can be virtual by migration
Machine ensures the normal operation of virtual machine business.Live migration of virtual machine refers to the virtual machine that will be currently running from a main frame
The process on another main frame is moved on to, the business of virtual machine need not be interrupted during being somebody's turn to do.
During virtual machine is migrated to destination host by source host, the message that client sends can be sent to source host
Virtual machine processed, the corresponding address of forward table of physical switches is also the IP address of virtual machine in source host.Work as void
After the completion of the migration of plan machine, but the forward table of physical switches is when being not yet changed to the IP address of virtual machine in destination host, client
The message at end can be still sent to source host, but virtual machine now on source host is unavailable, therefore this segment message will
Lose, cause Network to be interrupted.
Therefore, how to provide a kind of live migration of virtual machine method and its system that can reduce the appearance of message dropping situation is
Those skilled in the art need the problem for solving at present.
The content of the invention
It is an object of the invention to provide a kind of live migration of virtual machine method and its system, transition process can be as far as possible avoided
In there is message dropping, reduce the situation that Network interrupts and occur, improve the reliability of live migration of virtual machine process.
In order to solve the above technical problems, the invention provides a kind of live migration of virtual machine method, including：
Virtual machine management platform sends virtual machine (vm) migration and instructs to controller；
After the controller receives the virtual machine (vm) migration instruction, control virtual machine is moved from source host to destination host
Move, and packet buffer queue is set up on the destination host；
When the migration completion remaining time that the virtual machine management platform detects virtual machine reaches predetermined threshold value, send ground
Location more new command is to the controller；
After the controller receives the address more new command, control physical switches are according to the destination host internal weakness
The IP address of plan machine updates forward table；
The message that the physical switches send client is sent to the packet buffer according to the forward table after updating
Cached in queue；
The virtual machine management platform is detected after the completion of migration, is sent migration and is finished instruction to the controller；
The whole messages cached in the packet buffer queue are sent the void to the destination host by the controller
In plan machine, and destroy the packet buffer queue.
Preferably, the control physical switches update forward table according to the IP address of virtual machine in the destination host
Process is specially：
The controller controls the destination host to broadcast virtual machine in the destination host to the physical switches
Gratuitous ARP, and control the source host to intercept the virtual machine that the gratuitous ARP enters in the source host；
After the physical switches receive the gratuitous ARP, according to the destination host carried in the gratuitous ARP
The IP address of interior virtual machine updates forward table.
Preferably, the control source host intercepts the mistake of the virtual machine that the gratuitous ARP enters in the source host
Journey is specially：
The controller issues flow table to the source host by openflow agreements, and control intercepts the gratuitous ARP and enters
Enter in the virtual machine in the source host.
In order to solve the above technical problems, present invention also offers a kind of live migration of virtual machine system, including：
Virtual machine management platform, instructs to controller for sending virtual machine (vm) migration；The migration for detecting virtual machine is completed
When remaining time reaches predetermined threshold value, address more new command to the controller is sent；Detect after the completion of migration, send migration
Finish instruction to the controller；
The controller, after receiving the virtual machine (vm) migration instruction, control virtual machine is from source host to destination host
Migrated, and packet buffer queue is set up on the destination host；After receiving the address more new command, physics is controlled
Interchanger updates forward table according to the IP address of virtual machine in the destination host；It is complete by what is cached in the packet buffer queue
Portion's message is sent in the virtual machine to the destination host, and destroys the packet buffer queue；
The physical switches, the message for client to be sent is sent to the message according to the forward table after updating
Cached in buffer queue.
Preferably, the controller is specifically included：
Migration control unit, after receiving the virtual machine (vm) migration instruction, control virtual machine is from source host to purpose master
Machine is migrated；
Queue setting unit, after receiving the virtual machine (vm) migration instruction, message is set up on the destination host and is delayed
Deposit queue；
Address updating block, after receiving the address more new command, controls the destination host to the physics
Interchanger broadcasts the gratuitous ARP of virtual machine in the destination host；After the gratuitous ARP being received for the physical switches,
Forward table is updated according to the IP address of virtual machine in the destination host carried in the gratuitous ARP；
Control unit is intercepted, enters virtual in the source host for controlling the source host to intercept the gratuitous ARP
Machine；
Caching finishing control unit, for the whole messages cached in the packet buffer queue to be sent to the purpose
In virtual machine in main frame, and destroy the packet buffer queue.
Preferably, it is described interception control unit specifically for：
Flow table to the source host is issued by openflow agreements, control intercepts the gratuitous ARP and enters the source master
In virtual machine in machine.
The invention provides a kind of live migration of virtual machine method and its system, it is included in and packet buffer is set up on destination host
Queue, when the migration for detecting virtual machine completes remaining time reaches predetermined threshold value, according to the IP of virtual machine in destination host
Address updates the forward table of physical switches, and physical switches send to destination host the message that client sends afterwards
Packet buffer queue is cached, without retransmiting to the virtual machine of source host, after the completion of migration, by packet buffer queue
Whole messages send in the virtual machine to destination host, processed by the virtual machine on destination host, and destroy message
Buffer queue.
I.e. during live migration of virtual machine, before not updating forward table, physical switches send to source host message
On virtual machine processed, update forward table after, physical exchange chance sends message the packet buffer to destination host
Queue, is waited after the completion of migration, and the message that the virtual machine on destination host can be received in packet buffer queue is processed successively, and
After packet buffer queue is destroyed, the message of physical switches transmission is directly received.It can be seen that, the present invention can realize virtual machine heat
The smooth transition of Network in transition process, avoids message dropping (i.e. packet loss) as far as possible, reduces Network interruption
Situation occur, improve the reliability of live migration of virtual machine process.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be to institute in prior art and embodiment
The accompanying drawing for needing to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also obtain according to these accompanying drawings
Obtain other accompanying drawings.
A kind of flow chart of the process of live migration of virtual machine method that Fig. 1 is provided for the present invention；
A kind of structural representation of live migration of virtual machine that Fig. 2 is provided for the present invention.
Specific embodiment
Core of the invention is to provide a kind of live migration of virtual machine method and its system, can as far as possible avoid transition process
In there is message dropping, reduce the situation that Network interrupts and occur, improve the reliability of live migration of virtual machine process.
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
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
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Shown in Figure 1 the invention provides a kind of live migration of virtual machine method, Fig. 1 is empty for one kind that the present invention is provided
The flow chart of the process of plan machine thermophoresis side；The method includes：
Step s101：Virtual machine management platform sends virtual machine (vm) migration and instructs to controller；
Step s102：After controller receives virtual machine (vm) migration instruction, control virtual machine is carried out from source host to destination host
Migration, and packet buffer queue is set up on destination host；
It should be noted that set up packet buffer queue be before virtual machine (vm) migration or during virtual machine (vm) migration,
The present invention is simultaneously not specifically limited.
Step s103：When the migration completion remaining time that virtual machine management platform detects virtual machine reaches predetermined threshold value,
Send address more new command to controller；
It is understood that because virtual machine (vm) migration needs a period of time, for example need 10s (time span with
Virutal machine memory size is relevant), and the storage time of packet buffer queue is limited, for example, can only keep in message 2s or 3s,
Therefore the forward table of physical switches can not early enter very much row address renewal, if updated too early, such as before migration is completed in 6s
Address renewal is carried out, then the message that physical switches send in 6s afterwards needs to be buffered in packet buffer queue always
In, and packet buffer queue can not be crossed for a long time to packet storage, therefore cause segment message to reach packet buffer queue
Keep in the time limit but migration is remained unfulfilled, can now cause that this segment message is lost, in turn result in Network interruption.Therefore comprehensively examine
After the temporary time limit of the packet buffer queue that the forward table for considering physical switches updates time and setting, predetermined threshold value is set,
The address for making it possible to initiate forward table in the suitable time updates operation.
Step s104：After controller receives address more new command, control physical switches are according to virtual in destination host
The IP address of machine updates forward table；
Step s105：The message that physical switches send client is sent to packet buffer according to the forward table after updating
Cached in queue；
Step s106：Virtual machine management platform is detected after the completion of migration, is sent migration and is finished instruction to controller；
Step s107：The whole messages cached in packet buffer queue are sent the virtual machine to destination host by controller
It is interior, and destroy packet buffer queue.
If it is understood that not destroying packet buffer queue, physical exchange chance is always sent to message message to be delayed
Deposit in queue, can so influence the normal work of virtual machine, therefore, the whole messages in by packet buffer queue are sent to void
, it is necessary to be destroyed to it after plan machine.
Wherein, in step s104, the process that controller receives after the more new command of address is specially：
Controller controls destination host to the gratuitous ARP (Address of virtual machine in physical switches broadcast destination host
Resolution Protocol, address resolution protocol), and voltage input host intercepts gratuitous ARP enters virtual in source host
Machine；
After physical switches receive gratuitous ARP, according to the IP address of virtual machine in the destination host carried in gratuitous ARP
Update forward table.
It is understood that because destination host sends own IP address to physical switches using broadcast mode, now,
If if source host is not intercepted to gratuitous ARP, the gratuitous ARP can enter virtual in source host by the network interface of source host
In machine, in this case, the virtual machine in source host can repeat to send a signal to physical switches, free before recognizing
ARP is the address of itself, can so cause IP conflicts occur so that the address in the forward table of physical switches is finally changed to
The IP address of source host, so as to the situation for causing Network interruption occur；Therefore, it is necessary to set intercept on the source host, make
During gratuitous ARP cannot be introduced into the virtual machine in source host.
In addition, the virtual machine that the preferred elder generation's voltage input host intercepts gratuitous ARP of controller enters in source host, then control purpose
Main frame is to physical switches broadcast gratuitous ARP；Certainly, both can also be carried out simultaneously, and the present invention is not particularly limited to this.
Further, the process of the virtual machine that above-mentioned voltage input host intercepts gratuitous ARP enters in source host is specially：
Controller issues flow table to source host by openflow agreements, and control intercepts gratuitous ARP and enters in source host
In virtual machine.
The invention provides a kind of live migration of virtual machine method, it is included on destination host and sets up packet buffer queue, when
When the migration completion remaining time for detecting virtual machine reaches predetermined threshold value, updated according to the IP address of virtual machine in destination host
The forward table of physical switches, afterwards physical switches the message that client sends is sent the packet buffer to destination host
Queue is cached, without retransmiting to the virtual machine of source host, after the completion of migration, by the whole report of packet buffer queue
Text is sent to the virtual machine on destination host, is processed by the virtual machine on destination host, and destroy packet buffer queue.
I.e. during live migration of virtual machine, before not updating forward table, physical switches send to source host message
On virtual machine processed, update forward table after, physical exchange chance sends message the packet buffer to destination host
Queue, is waited after the completion of migration, and the message that the virtual machine on destination host can be received in packet buffer queue is processed successively, and
After packet buffer queue is destroyed, the message of physical switches transmission is directly received.It can be seen that, the present invention can realize virtual machine heat
The smooth transition of Network in transition process, avoids message dropping (i.e. packet loss) as far as possible, reduces Network interruption
Situation occur, improve the reliability of live migration of virtual machine process.
It is shown in Figure 2 present invention also offers a kind of live migration of virtual machine system, one kind that Fig. 2 is provided for the present invention
The structural representation of live migration of virtual machine.The system includes：
Virtual machine management platform 1, instructs to controller 2 for sending virtual machine (vm) migration；The migration for detecting virtual machine is complete
When reaching predetermined threshold value into remaining time, address more new command to controller 2 is sent；Detect after the completion of migration, send migration
Finish instruction to controller 2；
Controller 2, after receiving virtual machine (vm) migration instruction, control virtual machine is moved from source host to destination host
Move, and packet buffer queue is set up on destination host；After receiving address more new command, control physical switches 3 are according to mesh
Main frame in virtual machine IP address update forward table；The whole messages cached in packet buffer queue are sent to destination host
In interior virtual machine, and destroy packet buffer queue；
Physical switches 3, the message for client to be sent is sent to packet buffer team according to the forward table after updating
Cached in row.
Wherein, controller 2 is specifically included：
Migration control unit, after receiving virtual machine (vm) migration instruction, control virtual machine enters from source host to destination host
Row migration；
Queue setting unit, after receiving virtual machine (vm) migration instruction, sets up packet buffer queue on destination host；
Address updating block, after receiving address more new command, control destination host broadcasts mesh to physical switches 3
Main frame in virtual machine gratuitous ARP；After receiving gratuitous ARP for physical switches 3, according to the purpose carried in gratuitous ARP
The IP address of virtual machine updates forward table in main frame；
Control unit is intercepted, for the virtual machine that voltage input host intercepts gratuitous ARP enters in source host；
Caching finishing control unit, for the whole messages cached in packet buffer queue to be sent to destination host
In virtual machine, and destroy packet buffer queue.
Preferably, intercept control unit specifically for：
Flow table to source host is issued by openflow agreements, control intercepts the virtual machine that gratuitous ARP enters in source host
It is interior.
The invention provides a kind of live migration of virtual machine system, it is included on destination host and sets up packet buffer queue, when
When the migration completion remaining time for detecting virtual machine reaches predetermined threshold value, updated according to the IP address of virtual machine in destination host
The forward table of physical switches, afterwards physical switches the message that client sends is sent the packet buffer to destination host
Queue is cached, without retransmiting to the virtual machine of source host, after the completion of migration, by the whole report of packet buffer queue
Text is sent to the virtual machine on destination host, is processed by the virtual machine on destination host, and destroy packet buffer queue.
I.e. during live migration of virtual machine, before not updating forward table, physical switches send to source host message
On virtual machine processed, update forward table after, physical exchange chance sends message the packet buffer to destination host
Queue, is waited after the completion of migration, and the message that the virtual machine on destination host can be received in packet buffer queue is processed successively, and
After packet buffer queue is destroyed, the message of physical switches transmission is directly received.It can be seen that, the present invention can realize virtual machine heat
The smooth transition of Network in transition process, avoids message dropping (i.e. packet loss) as far as possible, reduces Network interruption
Situation occur, improve the reliability of live migration of virtual machine process.
It should be noted that in this manual, term " including ", "comprising" or its any other variant be intended to
Nonexcludability is included, so that process, method, article or equipment including a series of key elements not only will including those
Element, but also other key elements including being not expressly set out, or also include being this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Also there is other identical element in process, method, article or equipment including the key element.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or uses the present invention.
Various modifications to these embodiments will be apparent for 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, the present invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The scope most wide for causing.
Claims (6)
1. a kind of live migration of virtual machine method, it is characterised in that including：
Virtual machine management platform sends virtual machine (vm) migration and instructs to controller；
After the controller receives the virtual machine (vm) migration instruction, control virtual machine is migrated from source host to destination host,
And packet buffer queue is set up on the destination host；
When the migration completion remaining time that the virtual machine management platform detects virtual machine reaches predetermined threshold value, address is sent more
New command is to the controller；
After the controller receives the address more new command, control physical switches are according to virtual machine in the destination host
IP address update forward table；
The message that the physical switches send client is sent to the packet buffer queue according to the forward table after updating
Inside cached；
The virtual machine management platform is detected after the completion of migration, is sent migration and is finished instruction to the controller；
The whole messages cached in the packet buffer queue are sent the virtual machine to the destination host by the controller
It is interior, and destroy the packet buffer queue.
2. method according to claim 1, it is characterised in that the control physical switches are according in the destination host
The process that the IP address of virtual machine updates forward table is specially：
The controller controls the destination host to broadcast the free of virtual machine in the destination host to the physical switches
ARP, and control the source host to intercept the virtual machine that the gratuitous ARP enters in the source host；
After the physical switches receive the gratuitous ARP, according to the destination host internal weakness carried in the gratuitous ARP
The IP address of plan machine updates forward table.
3. method according to claim 2, it is characterised in that the control source host intercepts the gratuitous ARP and enters
The process for entering the virtual machine in the source host is specially：
The controller issues flow table to the source host by openflow agreements, and control intercepts the gratuitous ARP and enters institute
State in the virtual machine in source host.
4. a kind of live migration of virtual machine system, it is characterised in that including：
Virtual machine management platform, instructs to controller for sending virtual machine (vm) migration；The migration for detecting virtual machine completes remaining
When time reaches predetermined threshold value, address more new command to the controller is sent；Detect after the completion of migration, send migration and finish
Instruct to the controller；
The controller, after receiving the virtual machine (vm) migration instruction, control virtual machine is carried out from source host to destination host
Migration, and packet buffer queue is set up on the destination host；After receiving the address more new command, physical exchange is controlled
Machine updates forward table according to the IP address of virtual machine in the destination host；The whole reports that will be cached in the packet buffer queue
Text is sent to the virtual machine in the destination host, and destroys the packet buffer queue；
The physical switches, the message for client to be sent is sent to the packet buffer according to the forward table after updating
Cached in queue.
5. system according to claim 4, it is characterised in that the controller is specifically included：
Migration control unit, after receiving the virtual machine (vm) migration instruction, control virtual machine enters from source host to destination host
Row migration；
Queue setting unit, after receiving the virtual machine (vm) migration instruction, sets up packet buffer team on the destination host
Row；
Address updating block, after receiving the address more new command, controls the destination host to the physical exchange
Machine broadcasts the gratuitous ARP of virtual machine in the destination host；After the gratuitous ARP being received for the physical switches, foundation
The IP address of virtual machine updates forward table in the destination host carried in the gratuitous ARP；
Control unit is intercepted, for controlling the source host to intercept the virtual machine that the gratuitous ARP enters in the source host；
Caching finishing control unit, for the whole messages cached in the packet buffer queue to be sent to the destination host
In interior virtual machine, and destroy the packet buffer queue.
6. system according to claim 5, it is characterised in that the interception control unit specifically for：
Flow table to the source host is issued by openflow agreements, control intercepts the gratuitous ARP and enters in the source host
Virtual machine in.
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| CN107370679A (en) * | 2017-07-20 | 2017-11-21 | 郑州云海信息技术有限公司 | A kind of method and device for realizing migration process |
| CN108153580A (en) * | 2018-01-05 | 2018-06-12 | 北京中实信息技术有限公司 | A kind of method of virutal machine memory thermal expansion exhibition under super fusion architecture |
| CN113300931A (en) * | 2021-05-12 | 2021-08-24 | 中国联合网络通信集团有限公司 | Virtual machine migration discovery method and VTEP |
| CN114003349A (en) * | 2021-12-30 | 2022-02-01 | 杭州优云科技有限公司 | Virtual machine migration method and equipment |
| CN114760242A (en) * | 2022-03-30 | 2022-07-15 | 深信服科技股份有限公司 | Virtual router migration method and device, electronic equipment and storage medium |
| CN114844833A (en) * | 2022-03-30 | 2022-08-02 | 阿里云计算有限公司 | Message processing method and system, storage medium and computer terminal |
| CN115297055A (en) * | 2022-07-25 | 2022-11-04 | 紫光云技术有限公司 | Public cloud host migration arp table entry updating method |
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