A Method of Online Migration of Virtual Machine Combining Serial and Parallel
A virtual machine migration and virtual machine technology, applied in the direction of program startup/switching, resource allocation, program control design, etc., can solve the problems of prolonged memory transfer time, longer total migration time, and increased memory
Active Publication Date: 2017-04-26
XI AN JIAOTONG UNIV
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Problems solved by technology
In a single serial migration process, the long online migration process of the virtual machine and the high dirty page rate increase the memory transferred each cycle, thus lengthening the total migration time
In a single parallel migration process, parallel migration among many VMs will prolong the total memory transfer time due to competition for network bandwidth, thus lengthening the total migration time
Method used
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[0059] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.
[0060] Such as figure 1 As shown, the method of the present invention includes the following steps: Step 101, abstracting the mapping changes of the VM before and after migration and its host HM into a matrix, wherein each element represents the mapping relationship between the VM and its host; Step 102, the matrix before and after migration Compare line by line to find out and eliminate "useless" migrations that only swap hosts before and after migration; step 103, generate serial and parallel migration queues for "useful" migrations according to the hybrid migration algorithm; step 104 generate serial and parallel migration queues and The statistical table MIGR of the earliest migration time of each migration queue provides a basis for subsequent virtual machine integration.
[0061] The s...
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The invention provides a serial and parallel combination based virtual machine online migration method, so that the time for waiting the migration of large amounts of virtual machines during a continuous service or disaster recovery in a cloud environment can be shortened and a foundation is laid for subsequent virtual machine integration depending on a virtual machine mixed migration method. The method comprises the following steps: step 1, abstracting the mapping changes of virtual machines before and after migration and host machines of the virtual machines into matrixes before and after migration respectively, wherein each element in the matrixes represents a mapping relationship between each virtual machine and the host machine of the virtual machine; step 2, comparing the matrixes before and after migration line by line to find out the virtual machines exchanged in position only before and after migration in the two host machines, judging two exchange migration processes as useless migrations, deleting the useless migrations, and remaining useful migrations; step 3, according to a mixed migration algorithm, generating a serial and parallel migration queue by the useful migrations; and step 4, according to the generated serial and parallel migration queue, outputting serial and parallel migration batch and earliest migration time for subsequent virtual machine integration.
Description
technical field [0001] The invention relates to a virtual machine online migration method, in particular to a virtual machine online migration method combining serial and parallel. Background technique [0002] As a part of virtualization technology, online migration technology can automatically transfer workloads when servers or data centers are abnormal. During virtual machine maintenance, loads can be migrated to idle virtual machines to ensure uninterrupted business. In addition, virtual machine online migration technology can also be used for disaster recovery to achieve disaster recovery. [0003] At present, most virtual machine online migration technologies adopt the mainstream pre-copy strategy, and the memory data of the virtual machine on the source host is sent to the virtual machine of the destination host cyclically during the migration. In the first round of the cycle, all memory page data is sent, and in each subsequent round, the dirty pages written by the ...
Claims
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IPC IPC(8): G06F9/48G06F9/50
CPCG06F9/4875G06F9/5061
Inventor 郑庆华李睿钟阿敏董博阮建飞朱旭律
Owner XI AN JIAOTONG UNIV