CN104580328A - Virtual machine migration method, device and system - Google Patents

Abstract

The invention provides a virtual machine migration method, device and system. The method comprises the following steps: determining a first address of a free node in a first super node by a first control node, wherein the free node is a node with free resource in the first super node; sending the first address of the free node to a first node by the first control node to ensure that the first node migrates a migration data block to a second node through the first address, wherein the migration data block is a part of data prepared to be migrated from the first node to the second node and the second node is arranged in a second super node. According to the virtual machine migration method, device and system, the data to be migrated in the first node is divided into a plurality of migration data blocks and the migration data blocks are migrated from the first address of the first node to the second node through corresponding free nodes, so that the influences from the virtual machine migration to the other applications connected in the migration network and the performance of the virtual machine are reduced, the scheduling as required is realized, and the utilization rate of the free resources in the data is improved.

Description

Virtual machine migration method, device and system

technical field

The present invention relates to communication technology, in particular to a virtual machine migration method, device and system.

Background technique

Among the important technologies provided by modern virtual machine technology is virtual machine migration, that is, to migrate an operating system to another physical node without interrupting any host service in the operating system to be migrated.

In the prior art, the virtual machine migration between the source node and the destination node mainly includes: using Transmission Control Protocol/Internet Protocol, or using conversion cable technology combined with Remote Direct Memory Access (RDMA for short) In the way of copying memory pages between the source node and the destination node,

However, during the process of migrating the virtual machine from the source node to the destination node, due to the limited bandwidth of the network card between the source node and the destination node, the performance of other virtual machines connected between the source node and the destination node is degraded.

Contents of the invention

The invention provides a virtual machine migration method, device and system, which are used to improve the performance of other virtual machines connected between the source node and the destination node.

The first aspect provides a virtual machine migration method, which is characterized in that it includes:

The first control node determines the first address of the first idle node in the first supernode, the first idle node is a node with idle resources in the first supernode, and the first supernode includes the first a control node, a first node, and at least one of said first idle nodes;

The first control node sends the first address of the first idle node to the first node, so that the first node migrates the migration data block to the second node through the first address, and The migration data block is a part of data to be migrated from the first node to the second node, and the second node is set in the second supernode.

In a first possible implementation manner of the first aspect, after the first control node sends the first address of the first idle node to the first node, further includes:

The first control node receives an address mapping message sent by the second control node, so as to determine a mapping relationship between the third address of the second idle node and the first address, and the address mapping message includes the A mapping relationship between the second address of the second node and the third address of the second idle node, where the second idle node is a node with idle resources in the second supernode.

In the first aspect or the first possible implementation of the first aspect, in the second possible implementation, the first control node sends the first address of the idle node to the first node Previously, also included:

The first control node receives an idle node request sent by the first node, and the idle node request is used to request allocation of the idle node;

The first control node sending the first address of the idle child node to the first node includes:

The first control node allocates the idle node to the first node according to the idle node request.

In the second aspect, a virtual machine migration method is provided, including:

The first node receives the first address of the first idle node sent by the first control node to migrate the migration data block to the second node through the first address, and the migration data block is to be transferred from the first node migrating a portion of the data to a second node, the second node being disposed in a second supernode;

The first node migrates the migration data block to the second node through the first idle node.

In a first possible implementation manner of the second aspect, before the first node migrates the migration data block to the second node through the first idle node, the method further includes:

The first node sends migration data information to the first idle node, so that the first idle node establishes an address mapping relationship with the migration data block in the first node, and the migration data information It includes size information of the migrated data block, and address information of the migrated data block in the first node.

In the second aspect or the first possible implementation manner of the second aspect, in the second possible implementation manner, the first node receives the first idle subnode number sent by the first control node. Before an address, also include:

The first node sends an idle node request to the first control node, where the idle node request is used to request allocation of the idle node.

In the third aspect, a virtual machine migration device is provided, including:

A determining module, configured to determine a first address of a first idle node in the first supernode, the first idle node is a node with idle resources in the first supernode, and the first supernode includes the first a control node, a first node and at least one said first idle node;

a sending module, configured to send the first address of the first idle node to the first node, so that the first node migrates the migration data block to the second node through the first address, the The migration data block is a part of data to be migrated from the first node to the second node, and the second node is set in the second supernode.

In a first possible implementation manner of the third aspect, it also includes: a receiving module;

The receiving module is configured to receive an address mapping message sent by the second control node, so as to determine a mapping relationship between the third address of the second idle node and the first address, and the address mapping message includes the A mapping relationship between the second address of the second node and the third address of the second idle node, where the second idle node is a node with idle resources in the second supernode.

In the third aspect or the first possible implementation manner of the third aspect, in the second possible implementation manner, the receiving module is further configured to receive the idle node request sent by the first node, so The idle node request is used to request allocation of the idle node;

The sending module is further configured to assign the idle node to the first node according to the idle node request.

In a fourth aspect, a virtual machine migration device is provided, including:

The sending module is configured to receive the first address of the first idle node sent by the first control node, and to migrate the migration data block to the second node through the first address, and the migration data block is to be transferred from the first node to the second node. Migrating a portion of data from a node to a second node, the second node being disposed in a second supernode;

A migration module, configured to migrate the migration data block to the second node through the first idle node.

In a first possible implementation manner of the fourth aspect, the migration module is further configured for the first node to send migration data information to the first idle node, so that the first idle node establishes a The address mapping relationship between the migration data blocks in the first node, the migration data information includes size information of the migration data blocks, and address information of the migration data blocks in the first node.

In the fourth aspect or the first possible implementation manner of the fourth aspect, in the second possible implementation manner, the sending module is further configured to send an idle node request to the first control node, so The idle node request is used to request allocation of the idle node.

A fifth aspect provides a virtual machine migration system, including: the virtual machine migration device according to any one of the third aspect and the virtual machine migration device according to the fourth aspect.

In the virtual machine migration method, device and system provided by the embodiments of the present invention, the first control node determines the first address of the idle node in the first supernode, where the idle node is a node with idle resources in the first supernode; Next, the first control node sends the first address of the idle node to the first node, so that the first node migrates the migration data block to the second node through the first address, wherein the migration data block is prepared to be migrated from the first node to Part of the data of the second node, the second node is set in the second super node. Therefore, it is realized that the data to be migrated in the first node is divided into multiple migration data blocks, and the migration data blocks are migrated from the first address of the first node to the second node through the corresponding idle node, reducing the migration of virtual machines. Performance for other applications and virtual machines connected to the migrated network. Furthermore, on-demand scheduling is realized, and the utilization rate of idle resources in data is improved.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is a flowchart of a virtual machine migration method provided by an embodiment of the present invention;

FIG. 2 is a flowchart of a virtual machine migration method provided by another embodiment of the present invention;

FIG. 3 is a flow chart of a virtual machine migration method provided in yet another embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a virtual machine migration device provided by an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a virtual machine migration device provided by another embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a virtual machine migration device provided in yet another embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a virtual machine migrator provided by an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a virtual machine migrator provided by another embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

The virtual machine migration method provided in the embodiment of the present invention can be specifically applied to virtual machine migration between supernodes interconnected through a memory sharing network. The virtual machine migration method provided in this embodiment can be specifically executed by a virtual machine migration method device. The device for migrating virtual machines can be implemented in software and/or hardware. The virtual machine migration method, device and system provided in this embodiment will be described in detail below.

FIG. 1 is a flowchart of a virtual machine migration method provided by an embodiment of the present invention. As shown in Figure 1, the method of the present embodiment includes:

Step 101, the first control node determines a first address of a first idle node in the first supernode, where the first idle node is a node with idle resources in the first supernode.

In this embodiment, the first supernode includes a first control node, a first node, and at least one idle child node.

It should be noted that the first control node is responsible for monitoring the network of each node in the first supernode and the idle state of the central processing unit. If the first monitoring node determines that the network of the node in the first supernode is in an idle state, it determines that the node is the first idle node, and further determines that the address of the node is the first address of the first idle node.

Step 102, the first control node sends the first address of the first idle node to the first node, so that the first node migrates the migration data block to the second node through the first address.

In this embodiment, the migration data block is a part of data to be migrated from the first node to the second node, that is, the first node divides the data to be migrated from the first node to the second node into multiple data blocks , the migration data block is one of the plurality of data blocks; wherein, the second node is set in the second supernode, and the first node may be a virtual machine memory.

Specifically, after the first control node determines the first address of the first idle node in the first supernode, it sends the first address to the first node, and then, the first node corresponds the size of the migration data block to the migration data block The first address of the first node is sent to the first idle node, and then the first idle node monitors the migration data block corresponding to itself in the first node, and finally, the first idle node uses the network node control (NIC) to The migration data block corresponding to itself on the first node is sent to the second node, that is, the target node.

It should be noted that the addresses corresponding to the migrated data blocks in the first node of each first idle node are mutually disjoint.

In this embodiment, the first address of the first idle node in the first supernode is determined by the first control node, wherein the first idle node is a node with idle resources in the first supernode; then, the first control node The node sends the first address of the first idle node to the first node, so that the first node migrates the migration data block to the second node through the first address, wherein the migration data block is prepared to migrate from the first node to the second node A part of the data, the second node is set in the second super node. Therefore, it is realized that the data to be migrated in the first node is divided into multiple migration data blocks, and the migration data blocks are migrated from the first address of the first node to the second node through the corresponding first idle node, reducing virtual The performance of machine migration to other applications and virtual machines connected in the migration network. Furthermore, on-demand scheduling is realized, and the utilization rate of idle resources in data is improved.

Optionally, after step 102, it may further include: the first control node receives the address mapping message sent by the second control node, so as to determine the mapping relationship between the third address and the first address of the second idle node, wherein , the address mapping message includes a mapping relationship between the second address of the second node and the third address of the second idle node, where the second idle node is a node with idle resources in the second supernode.

Specifically, when the load of the second node is heavy, the second controller node can use a method similar to that of the first control node to apply for a second idle node in the second supernode to receive the first node When migrating the data block, the migrating data block is received by the second idle node, and the migrating data block is written into the second node.

On the basis of the foregoing embodiments, before step 101, it may also include:

The first control node receives a first idle node request sent by the first node, and the first idle node request is used to request to assign the first idle node as the first node;

Further, the first control node may allocate an idle node to the first node according to an idle node request.

It should be noted that the first node may send an idle node request to the first control node, where the idle node request is used to request allocation of an idle node as the first node, where there is at least one idle node. Next, according to the idle node request sent by the first node, the first control node may notify the first node of the first address of the first idle node in a response manner. For example, when the virtual machine is migrated initially, the data migration includes 4 data migration blocks, M1, M2, M3, and M4, and the size of each data migration block is 1GB, and the first node sends an idle node request to the first control node , the idle node request needs to request three idle nodes as the first node, and further, the first node sends the second address of the second node to the first control node. Then, after detecting three available idle nodes N1 , N2 , N3 , the first control node will send the first address information of these three idle nodes to the first node, that is, the source node.

FIG. 2 is a flowchart of a virtual machine migration method provided by another embodiment of the present invention. As shown in Figure 2, the method of this embodiment includes:

Step 201, the first node receives the first address of the first idle node sent by the first control node, and uses the first address to migrate the migration data block to the second node.

The migration data block in this embodiment is a part of data to be migrated from the first node to the second node, wherein the second node is set in the second supernode.

Specifically, the first control node is responsible for monitoring the network of each node and the idle state of the central processing unit CPU in the first supernode. If the first monitoring node determines that the network of a node in the first supernode is in the idle state, it determines that the node is the first idle node, and further sends the address of the node as the first address of the idle child node to the first node.

Step 202, the first node migrates the migration data block to the second node through the first idle node.

Specifically, after the first node receives the first address of the first idle node sent by the first control node, the first node determines the specific location of the first idle node in the first supernode, and then, the first node and the first idle node Each node sends its own corresponding, that is, responsible data to the memory block of the virtual machine in the second node through its own NIC.

In this embodiment, the first node receives the first address of the first idle node sent by the first control node to migrate the migration data block to the second node through the first address, and then the first node uses the first The idle node migrates the migration data block to the second node. Therefore, it is realized that the data to be migrated in the first node is divided into multiple migration data blocks, and the migration data blocks are migrated from the first address of the first node to the second node through the corresponding first idle node, reducing virtual The performance of machine migration to other applications and virtual machines connected in the migration network. Furthermore, on-demand scheduling is realized, and the utilization rate of idle resources in data is improved.

On the basis of the foregoing embodiments, after step 201, it may further include:

The first node sends migration data information to the first idle node, so that the establishment of the first idle node and the address mapping relationship between the migration data block in the first node, wherein the migration data information includes the size information of the migration data block , and the address information of the migration data block in the first node.

In this embodiment, the first node sends migration data information to the first idle node, and each first idle node can respectively establish an address mapping relationship with the migration data block in the corresponding first node, and then, the first idle node can The migration data block is read from the corresponding first node through its own NIC, for example, the data is directly read from the first node in a read-only memory manner. Further, after each first idle node can respectively establish the address mapping relationship of the corresponding migration data block, the first node locks the migration data block, so as to prevent the data in the migration data block from being changed and ensure that the migration data The correctness of the data in the block.

On the basis of the foregoing embodiments, before step 201, it may also include:

The first node sends a first idle node request to the first control node, where the first idle node request is used to request allocation of the first idle node as the first node.

It should be noted that the first idle node request may also include the number of first idle nodes that the first node needs to apply for.

FIG. 3 is a flow chart of a virtual machine migration method provided by yet another embodiment of the present invention. As shown in Figure 3, the method of this embodiment includes:

Step 301, the first node sends a first idle node request to the first control node, and the first idle node request is used to request to assign the first idle node as the first node.

It should be noted that the first idle node request may include the number of first idle nodes that the first node needs to apply to the first control node.

Step 302, the first control node sends the first address of the first idle node to the first node according to the monitoring result.

In this embodiment, the first control node is responsible for monitoring the network of each node and the idle state of the central processing unit CPU in the first supernode. According to the monitoring result, the first control node sends the first address of the first idle node to the first node in response at that time, that is, the address of the node in the first supernode whose network is in an idle state.

Step 303, the first node sends migration data information to the first idle node.

The migration data information in this embodiment includes size information of the migration data block and location information of the migration data block in the first node. Further, the first node locks and protects the migration data block to ensure the correctness of the data.

Step 304, the first idle node establishes an address mapping relationship with the corresponding migration data block in the first node.

Step 305 , the first node sends the migration data block corresponding to the first idle node to the location corresponding to the second node through its own local network adapter NIC.

Further, on the basis of the foregoing embodiments, when the load of the second node is heavy, the second node may apply for the first idle node, and specifically implement steps 301 to 304, which will not be repeated here.

It should be noted that before step 305, it may also include:

Step 314, the first control node receives the second address mapping message sent by the second control node.

In this embodiment, the second address mapping message includes an address mapping relationship between the second idle node and the corresponding second node, where the second idle node is a node with idle resources in the second supernode. After the first control node receives the second address mapping message sent by the second control node, the first control point can determine the relationship between the first node and the second node according to the information sent to the first node about the first address of the first idle node The corresponding relationship between the idle nodes, so that the migration data block of the first node can be sent to the second node through the first idle node and the second idle node.

It should be noted that, in the process of migrating the data to be migrated from the first node to the second node, after using the above implementation method to migrate the migrated data block to the second node, the above implementation method can be repeated, and only Pay attention to data that has not been migrated, that is, dirty pages. The first node can continue to apply for free nodes from the first control point according to the size of the migrated data until the data in the first node reaches the preset value. Then, the first node copies the remaining data, that is, the dirty pages to the destination at one time. node, and the virtual machine migration process ends.

FIG. 4 is a schematic structural diagram of a virtual machine migration device provided by an embodiment of the present invention. As shown in FIG. 4, the virtual machine migration device includes: a determining module 41 and a sending module 42, wherein,

A determining module 41, configured to determine a first address of a first idle node in the first supernode, where the first idle node is a node with idle resources in the first supernode, and the first supernode includes a first control node, a first node and at least one first idle node;

The sending module 42 is configured to send the first address of the first idle node to the first node, so that the first node migrates the migration data block to the second node through the first address, and the migration data block is prepared to be migrated from the first node to the second node. Part of the data of the second node, the second node is set in the second super node.

In this embodiment, it is realized that the data to be migrated in the first node is divided into multiple migration data blocks, and the migration data block is migrated from the first address of the first node to the second node through the corresponding idle node, Reduced performance of virtual machine migration for other applications and virtual machines connected to the migration network. Furthermore, on-demand scheduling is realized, and the utilization rate of idle resources in data is improved.

FIG. 5 is a schematic structural diagram of a virtual machine migration device provided by another embodiment of the present invention. As shown in FIG. 5 , on the basis of the foregoing embodiments, the virtual machine migration apparatus may further include: a receiving module 43 . Specifically, the receiving module 43 is configured to receive an address mapping message sent by the second control node, so as to determine a mapping relationship between the third address of the second idle node and the first address, and the address mapping message includes the first address of the second node. A mapping relationship between the second address and the third address of the second idle node, where the second idle node is a node with idle resources in the second supernode.

On the basis of the above embodiments, the receiving module 43 is further configured to receive an idle node request sent by the first node, and the idle node request is used to request allocation of an idle node;

The sending module 42 is further configured to assign the idle node to the first node according to the idle node request.

In this embodiment, allocation of idle nodes according to the demand of the first node can be realized.

FIG. 6 is a schematic structural diagram of a virtual machine migration device provided by yet another embodiment of the present invention. As shown in FIG. 6, the virtual machine migration device includes: a sending module 61 and a migration module 62, wherein,

The sending module 61 is configured to receive the first address of the first idle node sent by the first control node, so as to migrate the migration data block to the second node through the first address, and the migration data block is prepared to be migrated from the first node to the second node. Part of the data of the second node, the second node is set in the second super node;

The migration module 62 is configured to migrate the migration data block to the second node through the first idle node.

In this embodiment, the first node locks the migration data block, so as to prevent the data in the migration data block from being changed and ensure the correctness of the data in the migration data block.

On the basis of the above embodiments, the migration module 62 is further used for the first node to send migration data information to the first idle node, so that the first idle node establishes an address mapping relationship with the migration data block in the first node, The migration data information includes size information of the migration data block and address information of the migration data block in the first node.

Further, on the basis of the foregoing embodiments, the sending module 61 is further configured to send an idle node request to the first control node, where the idle node request is used to request allocation of an idle node.

In this embodiment, it is possible to implement request allocation for idle node requirements.

This embodiment provides a virtual machine migration system, including: any virtual machine migration device in the embodiment shown in FIG. 3 or FIG. 4 and any virtual machine migration device in the embodiment shown in FIG. 6 .

FIG. 7 is a schematic structural diagram of a virtual machine migrator provided by an embodiment of the present invention. As shown in FIG. 7, the virtual machine migrator includes: a processor 71 and a sender 72, wherein,

Processor 71, configured to determine a first address of a first idle node in the first supernode, where the first idle node is a node with idle resources in the first supernode, and the first supernode includes a first control node, a first node and at least one first idle node;

The sender 72 is configured to send the first address of the first idle node to the first node, so that the first node migrates the migration data block to the second node through the first address, and the migration data block is prepared to be migrated from the first node to the second node. Part of the data of the second node, the second node is set in the second super node.

In this embodiment, it is realized that the data to be migrated in the first node is divided into multiple migration data blocks, and the migration data block is migrated from the first address of the first node to the second node through the corresponding idle node, Reduced performance of virtual machine migration for other applications and virtual machines connected to the migration network. Furthermore, on-demand scheduling is realized, and the utilization rate of idle resources in data is improved.

Further, on the basis of the foregoing embodiments, the virtual machine migrator may further include: a receiver 73 . Specifically, the receiver 73 is configured to receive an address mapping message sent by the second control node, so as to determine a mapping relationship between the third address of the second idle node and the first address, and the address mapping message includes the first address of the second node. A mapping relationship between the second address and the third address of the second idle node, where the second idle node is a node with idle resources in the second supernode.

On the basis of the above embodiments, the receiver 73 is further configured to receive an idle node request sent by the first node, and the idle node request is used to request allocation of an idle node;

The sending module 72 is further configured to assign the idle node to the first node according to the idle node request.

In this embodiment, allocation of idle nodes according to the demand of the first node can be realized.

FIG. 8 is a schematic structural diagram of a virtual machine migrator provided by another embodiment of the present invention. As shown in FIG. 8, the virtual machine migrator includes: a sender 81 and a processor 82, wherein,

The transmitter 81 is configured to receive the first address of the first idle node sent by the first control node, and to migrate the migration data block to the second node through the first address, and the migration data block is prepared to be migrated from the first node to the second node. Part of the data of the second node, the second node is set in the second super node;

The processor 82 is configured to migrate the migration data block to the second node through the first idle node.

In this embodiment, the first node locks the migration data block, so as to prevent the data in the migration data block from being changed and ensure the correctness of the data in the migration data block.

On the basis of the above embodiment, the processor 82 is further used for the first node to send migration data information to the first idle node, so that the first idle node establishes an address mapping relationship with the migration data block in the first node, The migration data information includes size information of the migration data block and address information of the migration data block in the first node.

Further, on the basis of the foregoing embodiments, the sender 81 is further configured to send an idle node request to the first control node, where the idle node request is used to request allocation of an idle node.

In this embodiment, it is possible to implement request allocation for idle node requirements.

This embodiment provides a virtual machine migration system, including: any virtual machine migration device in the embodiment shown in FIG. 7 and any virtual machine migration device in the embodiment shown in FIG. 8 .

Those of ordinary skill in the art can understand that all or part of the steps for implementing the above method embodiments can be completed by program instructions and related hardware. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps including the above-mentioned method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other various media that can store program codes.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (13)

1. a virtual machine migration method, is characterized in that, comprising:

First Controlling vertex determines the first address of the first idle node in the first supernode, described first idle node is the node of available free resource in described first supernode, and described first supernode comprises described first Controlling vertex, first node and the first idle node described at least one;

Described first Controlling vertex sends described first address of described first idle node to described first node, with make described first node by migration data block by described first address transfer to Section Point, described migration data block is a part of data preparing to move to from described first node Section Point, and described Section Point is arranged in the second supernode.

2. method according to claim 1, is characterized in that, described first Controlling vertex, to after described first node sends described first address of described first idle node, also comprises:

Described first Controlling vertex receives the address maps message that described second Controlling vertex sends, to make to determine the mapping relations between the 3rd address of the second idle node and described first address, described address maps message comprises the mapping relations between the second address of described Section Point and the 3rd address of described second idle node, and described second idle node is the node of resource free time in described second supernode.

3. method according to claim 1 and 2, is characterized in that, described first Controlling vertex also comprises before sending the first address of described idle node to described first node:

Described first Controlling vertex receives the idle node request that described first node sends, and described idle node request is in order to idle node described in request dispatching;

Described first Controlling vertex sends described first address of described idle child node to described first node, comprising:

Described idle node, according to described idle node request, is distributed to described first node by described first Controlling vertex.

4. a virtual machine migration method, is characterized in that, comprising:

First node receives the first address of the first idle node that the first Controlling vertex sends, in order to migration data block is passed through described first address transfer to Section Point, described migration data block is a part of data preparing to move to from described first node Section Point, and described Section Point is arranged in the second supernode;

Described migration data block is moved to described Section Point by described first idle node by described first node.

5. method according to claim 4, is characterized in that, described first node also comprises before by described first idle node described migration data block being moved to described Section Point:

Described first node sends migration data information to described first idle node, to make the address mapping relation described in described first idle node foundation and described first node between migration data block, described migration data information comprises the size information of described migration data block, and the address information of described migration data block in described first node.

6. the method according to claim 4 or 5, is characterized in that, described first node also comprises before receiving the first address of the first idle child node that described first Controlling vertex sends:

Described first node sends idle node request to described first Controlling vertex, and described idle node request is in order to idle node described in request dispatching.

7. a virtual machine (vm) migration device, is characterized in that, comprising:

Determination module, for determining the first address of the first idle node in the first supernode, described first idle node is the node of available free resource in described first supernode, and described first supernode comprises described first Controlling vertex, first node and the first idle node described at least one;

Sending module, for sending described first address of described first idle node to described first node, with make described first node by migration data block by described first address transfer to Section Point, described migration data block is a part of data preparing to move to from described first node Section Point, and described Section Point is arranged in the second supernode.

8. device according to claim 7, is characterized in that, also comprises: receiver module;

Described receiver module, for receiving the address maps message that described second Controlling vertex sends, to make to determine the mapping relations between the 3rd address of the second idle node and described first address, described address maps message comprises the mapping relations between the second address of described Section Point and the 3rd address of described second idle node, and described second idle node is the node of resource free time in described second supernode.

9. the device according to claim 7 or 8, is characterized in that, described receiver module, and also for receiving the idle node request that described first node sends, described idle node request is in order to idle node described in request dispatching;

Described sending module, also for according to described idle node request, distributes to described first node by described idle node.

10. a virtual machine (vm) migration device, is characterized in that, comprising:

Sending module, for receiving the first address of the first idle node that the first Controlling vertex sends, in order to migration data block is passed through described first address transfer to Section Point, described migration data block is a part of data preparing to move to from described first node Section Point, and described Section Point is arranged in the second supernode;

Transferring module, for moving to described Section Point by described first idle node by described migration data block.

11. devices according to claim 10, it is characterized in that, described transferring module, also send migration data information for described first node to described first idle node, to make the address mapping relation described in described first idle node foundation and described first node between migration data block, described migration data information comprises the size information of described migration data block, and the address information of described migration data block in described first node.

12. devices according to claim 10 or 11, is characterized in that, described sending module, and also for sending idle node request to described first Controlling vertex, described idle node request is in order to idle node described in request dispatching.

13. 1 kinds of virtual machine (vm) migration systems, is characterized in that, comprising: the virtual machine (vm) migration device as described in as arbitrary in claim 7-9 and the virtual machine (vm) migration device as described in claim 10-12.