Virtual machine migration method

A virtual machine migration and virtual machine technology, applied in the field of virtual machine migration, can solve problems such as downtime or long execution time, and achieve the effect of reducing execution time and saving costs

Inactive Publication Date: 2012-05-30
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] The purpose of the present invention is to provide a virtual machine migration method for the problems existing in the prior art to overcome the defects of downtime or long execution time caused by the virtual machine migration process in the prior art

Method used

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Embodiment Construction

[0028] Such as figure 1 Shown is the flow chart of the virtual machine migration method of the present invention, including:

[0029] Step 1. Keep the virtual machine running at the source end, enable the write operation restriction on the disk file of the virtual machine at the source end, and use the single-round pre-copy method to first copy the disk file and memory status of the virtual machine to the destination end and record them in the source end. The offset position information of the write operation on the disk file of the end virtual machine;

[0030] Step 2. Send the offset position information of the write operation of the disk file recorded in step 1 to the destination end, the virtual machine starts running at the destination end, the virtual machine stops running at the source end, and starts the virtual machine at the destination end. The read operation limit of the disk file;

[0031] Step 3: The source end sends the content of the offset position of the di...

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Abstract

The invention relates to a transfer method of a virtual machine. The method comprises the following steps: step one, keeping the virtual machine to operate at the source port, copying the disc file and the memory status of the virtual machine to the destination port and recording deviation position signal when the disc file of the virtual machine at the source port conducts writing operation; step two, sending the deviation position signal when the disc file of the virtual machine at the source port conducts writing operation to the destination port, so that the virtual machine starts to run at the destination port and stops to run at the source port; and starting the limitation to the read of the disc file of the virtual machine at the destination port; and step three, sending the content of deviation position of the disc file required by the virtual machine to the destination port by the source port according to the operation need of the destination port. The transfer method of the virtual machine provided by the invention can continuously carry out the transferring of virtual machines, and can send the deviation position content of the disc file, which changes in the process ofdisc transferring to the destination port according to the need of the destination port, thereby reducing interrupt time and execution time in the transferring process of virtual machines.

Description

technical field [0001] The invention relates to the technical field of virtual machines, in particular to a virtual machine migration method. Background technique [0002] Using virtual machine technology to encapsulate software can effectively shield the impact of hardware heterogeneity on software. Multiple virtual machine instances that encapsulate different software can run on the same hardware platform without affecting each other and sharing. The efficient and stable operation of the software provides security and manageability. [0003] Virtual machine migration technology is an inevitable development and attention technology in the process of virtualization. It migrates the virtual machine from the source physical machine to a suitable target machine, so as to weaken the impact of dynamic changes in underlying hardware resources on software operation, thereby improving system load balancing and resource utilization, and also facilitates fault-tolerant management. a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F9/48G06F9/455G06F17/30
Inventor 沃天宇怀进鹏李沁李博吕小虎胡春明
Owner BEIHANG UNIV
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