CN107704311A - A kind of virutal machine memory moving method and its device - Google Patents
A kind of virutal machine memory moving method and its device Download PDFInfo
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- CN107704311A CN107704311A CN201710892864.2A CN201710892864A CN107704311A CN 107704311 A CN107704311 A CN 107704311A CN 201710892864 A CN201710892864 A CN 201710892864A CN 107704311 A CN107704311 A CN 107704311A
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000005012 migration Effects 0.000 claims abstract description 47
- 238000013508 migration Methods 0.000 claims abstract description 47
- 230000006835 compression Effects 0.000 claims abstract description 26
- 238000007906 compression Methods 0.000 claims abstract description 26
- 230000006837 decompression Effects 0.000 claims description 18
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000005055 memory storage Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
Classifications
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- 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
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- 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
-
- 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
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- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Memory System Of A Hierarchy Structure (AREA)
Abstract
The invention discloses a kind of virutal machine memory moving method and its device.This method, including：By obtaining first data of the virtual machine in source physical machine memory storage；First data are subjected to multithreading compression, obtain first compressed data；First compressed data is subjected to multithreading transmission to target physical machine.Realize and transmit the first data to target physical machine simultaneously on multiple threads, the time of internal memory migration is carried out so as to save virtual machine from source physical machine to target physical machine.
Description
Technical Field
The present invention relates to computer technologies, and in particular, to a method and an apparatus for migrating a virtual machine memory.
Background
Virtual machine migration refers to migrating a virtual machine from one physical machine to another physical machine for running, wherein migration of the virtual machine between different physical machines is divided into two types: offline migration and online migration.
In the prior art of online migration, based on memory migration of a virtual machine, firstly, all memory pages of the virtual machine are marked as "dirty pages", and then, memory migration is performed through a multi-round memory iterative synchronization process. After a plurality of iterations, if the number of the residual dirty pages is less than the preset minimum value or the iteration number is greater than the preset maximum value, the virtual machine stops the iteration and the copying of the residual dirty pages, and the virtual machine is pulled up at the target host to finish the migration.
However, when the memory data is large, a large amount of data needs to be transmitted, which results in a long migration time of the virtual machine.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides a virtual machine memory migration method and device thereof, which are used to solve the problem of low efficiency of data acquisition.
In order to achieve the object of the present invention, the present invention provides a virtual machine memory migration method, including:
acquiring first data stored in a memory of a source physical machine by a virtual machine;
performing multi-thread compression on the first data to obtain first compressed data;
and sending the first compressed data to a target physical machine in a multi-thread mode.
Further, after the multi-threaded sending of the first compressed data to the target physical machine, the method further includes:
performing multi-thread compression on second data to obtain the second compressed data;
verifying the second compressed data and the first compressed data, and determining verified difference data;
and sending the difference data to the target physical machine in a multi-thread mode.
Further, after the multi-threaded sending of the first compressed data to the target physical machine, the method further includes:
and storing the first compressed data into a cache space, wherein the cache space comprises a space set in the source physical machine.
Further, the method also comprises the following steps:
setting the level and the number of multithread compression; or
And setting the level and the number of multithreading decompression, wherein the multithreading decompression comprises the decompression of the received data by the target physical machine.
Further, after the multi-thread compression is performed on the first data and the first compressed data is obtained, the method further includes:
and sending the first compressed data to a target physical machine is executed through a libvirt migration interface.
The invention provides a virtual machine memory migration device, which comprises:
the acquisition module is used for acquiring first data stored in a memory of a source physical machine by a virtual machine;
the processing module is used for carrying out multi-thread compression on the first data to obtain the first compressed data;
and the sending module is used for sending the first compressed data to a target physical machine in a multi-thread mode.
Further, the processing module is further configured to perform multi-thread compression on second data to obtain the second compressed data; verifying the second compressed data and the first compressed data, and determining verified difference data;
the sending module is further configured to send the difference data to the target physical machine in a multi-thread manner.
Further, the processing module is further configured to store the first compressed data in a cache space, where the cache space includes a space set in the source physical machine.
Furthermore, the processing module is further configured to set a level and a number of the multithread compression; or setting the level and the number of multithreading decompression, wherein the multithreading decompression comprises the decompression of the received data by the target physical machine.
Further, the sending module is configured to execute sending the first compressed data to a target physical machine through a libvirt migration interface.
The invention provides a method and a device for migrating a memory of a virtual machine, which are characterized in that first data stored in the memory of a source physical machine of the virtual machine are obtained; performing multi-thread compression on the first data to obtain first compressed data; and sending the first compressed data to a target physical machine in a multi-thread mode. The first data are transmitted to the target physical machine on the multiple threads simultaneously, and therefore the time for memory migration of the virtual machine from the source physical machine to the target physical machine is saved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a flowchart illustrating a virtual machine memory migration method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a virtual machine memory migration apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The virtual machine memory migration method provided by the embodiment of the invention can be particularly applied to the online migration of the virtual machine memory. The virtual machine memory migration method provided in this embodiment may be executed by a virtual machine memory migration device, where the virtual machine memory migration device may be integrated in a physical machine or separately configured, and the virtual machine memory migration device may be implemented in a software and/or hardware manner. The following describes the virtual machine memory migration method and apparatus provided in this embodiment in detail.
Fig. 1 is a flowchart illustrating a virtual machine memory migration method according to an embodiment of the present invention; as shown in fig. 1, an execution subject of this embodiment may be a virtual machine memory migration apparatus, and the virtual machine memory migration method provided by the present invention includes:
step 101, obtaining first data stored in a memory of a source physical machine by a virtual machine.
The applicable scenarios of this embodiment include: the virtual machine migrates data stored in memory of one physical machine, namely a source physical machine, to another physical machine, namely a target physical machine, and runs, wherein the source physical machine can comprise a host machine in the virtual machine.
And 102, performing multi-thread compression on the first data to obtain the first compressed data.
And 103, carrying out multi-thread transmission on the first compressed data to a target physical machine.
Specifically, the first data can be transmitted to the target physical machine on a plurality of threads simultaneously through multi-thread compression of the first data, so that the time for memory migration from the source physical machine to the target physical machine is saved.
In this embodiment, first data stored in a memory of a source physical machine is obtained; performing multi-thread compression on the first data to obtain first compressed data; and sending the first compressed data to a target physical machine in a multi-thread mode. The first data are transmitted to the target physical machine on the multiple threads simultaneously, and therefore the time for memory migration of the virtual machine from the source physical machine to the target physical machine is saved.
Further, on the basis of the foregoing embodiment, after the multi-thread sending of the first compressed data to the target physical machine, the method further includes:
performing multi-thread compression on second data to obtain the second compressed data;
verifying the second compressed data and the first compressed data, and determining verified difference data;
and sending the difference data to the target physical machine in a multi-thread mode.
In this embodiment, the second data includes data stored in a memory of a source physical machine by a current virtual machine, the first compressed data includes memory data migrated from the source physical machine to a target physical machine by a previous virtual machine, and the second compressed data and the first compressed data are verified to determine verified difference data; on the basis of the previous migration, only the difference data is migrated, so that the migration data volume is saved, and the migration time is saved. Furthermore, the difference data is transmitted in a multi-thread mode, and migration time is further saved.
Preferably, after the multithread sending of the first compressed data to the target physical machine, the method further includes:
and storing the first compressed data into a cache space, wherein the cache space comprises a space set in the source physical machine.
Further, on the basis of the above embodiment, the present embodiment further includes:
setting the level and the number of multithread compression; or
And setting the level and the number of multithreading decompression, wherein the multithreading decompression comprises the decompression of the received data by the target physical machine.
Further, on the basis of the foregoing embodiment, after the performing multi-thread compression on the first data and obtaining the first compressed data, the method further includes:
and sending the first compressed data to a target physical machine is executed through a libvirt migration interface.
FIG. 2 is a schematic structural diagram of a virtual machine memory migration apparatus according to an embodiment of the present invention; as shown in fig. 2, the virtual machine memory migration apparatus provided in the present invention includes: an acquisition module 21, a processing module 22 and a sending module 23. Wherein,
an obtaining module 21, configured to obtain first data stored in a memory of a source physical machine by a virtual machine;
a processing module 22, configured to perform multi-thread compression on the first data to obtain the first compressed data;
and the sending module 23 is configured to send the first compressed data to a target physical machine in a multi-thread manner.
In the embodiment, first data stored in a memory of a source physical machine by a virtual machine is acquired; performing multi-thread compression on the first data to obtain first compressed data; and sending the first compressed data to a target physical machine in a multi-thread mode. The first data are transmitted to the target physical machine on the multiple threads simultaneously, and therefore the time for memory migration of the virtual machine from the source physical machine to the target physical machine is saved.
Further, on the basis of the foregoing embodiment, the processing module 22 is further configured to perform multi-thread compression on second data to obtain the second compressed data; verifying the second compressed data and the first compressed data, and determining verified difference data;
the sending module 23 is further configured to send the difference data to the target physical machine in a multi-thread manner.
Further, on the basis of the foregoing embodiment, the processing module 22 is further configured to store the first compressed data into a cache space, where the cache space includes a space set in the source physical machine.
Further, on the basis of the above embodiment, the processing module 22 is further configured to set a level and a number of multithread compression; or setting the level and the number of multithreading decompression, wherein the multithreading decompression comprises the decompression of the received data by the target physical machine.
Further, on the basis of the foregoing embodiment, the sending module 23 is configured to execute sending the first compressed data to the target physical machine through a libvirt migration interface.
In this embodiment, the second data includes data stored in a memory of a source physical machine by a current virtual machine, the first compressed data includes memory data migrated from the source physical machine to a target physical machine by a previous virtual machine, and the second compressed data and the first compressed data are verified to determine verified difference data; on the basis of the previous migration, only the difference data is migrated, so that the migration data volume is saved, and the migration time is saved. Furthermore, the difference data is transmitted in a multi-thread mode, and migration time is further saved.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A method for migrating a memory of a virtual machine is characterized by comprising the following steps:
acquiring first data stored in a memory of a source physical machine by a virtual machine;
performing multi-thread compression on the first data to obtain first compressed data;
and sending the first compressed data to a target physical machine in a multi-thread mode.
2. The method of claim 1, wherein after the multi-threaded sending of the first compressed data to a target physical machine, further comprising:
performing multi-thread compression on second data to obtain the second compressed data;
verifying the second compressed data and the first compressed data, and determining verified difference data;
and sending the difference data to the target physical machine in a multi-thread mode.
3. The method of claim 2, wherein after the multi-threaded sending of the first compressed data to the target physical machine, further comprising:
and storing the first compressed data into a cache space, wherein the cache space comprises a space set in the source physical machine.
4. The method according to any one of claims 1-3, further comprising:
setting the level and the number of multithread compression; or
And setting the level and the number of multithreading decompression, wherein the multithreading decompression comprises the decompression of the received data by the target physical machine.
5. The method of claim 4, wherein after the multithreading compression of the first data to obtain the first compressed data, further comprising:
and sending the first compressed data to a target physical machine is executed through a libvirt migration interface.
6. A virtual machine memory migration apparatus, comprising:
the acquisition module is used for acquiring first data stored in a memory of a source physical machine by a virtual machine;
the processing module is used for carrying out multi-thread compression on the first data to obtain the first compressed data;
and the sending module is used for sending the first compressed data to a target physical machine in a multi-thread mode.
7. The apparatus of claim 6, wherein the processing module is further configured to perform multi-thread compression on second data to obtain the second compressed data; verifying the second compressed data and the first compressed data, and determining verified difference data;
the sending module is further configured to send the difference data to the target physical machine in a multi-thread manner.
8. The apparatus of claim 7, wherein the processing module is further configured to store the first compressed data in a cache space, and wherein the cache space comprises a space configured in the source physical machine.
9. The apparatus according to any of claims 6-8, wherein the processing module is further configured to set a level and a number of multithread compression; or setting the level and the number of multithreading decompression, wherein the multithreading decompression comprises the decompression of the received data by the target physical machine.
10. The apparatus of claim 9, wherein the sending module is configured to perform the sending the first compressed data to a target physical machine through a libvirt migration interface.
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| CN201710892864.2A CN107704311A (en) | 2017-09-27 | 2017-09-27 | A kind of virutal machine memory moving method and its device |
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| CN201710892864.2A CN107704311A (en) | 2017-09-27 | 2017-09-27 | A kind of virutal machine memory moving method and its device |
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Application publication date: 20180216 |