Xen virtualization platform based implementation method for trans-regional storage and distribution of base images
A virtualization platform and basic image technology, applied in the field of cross-area storage and distribution of basic images based on the Xen virtualization platform, can solve problems such as performance degradation of storage devices, reduce costs and improve user experience.
Active Publication Date: 2017-01-04
FUJIAN CENTM INFORMATION
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[0006] In the virtual machine created based on the image on the Xen virtualization platform, the existing technology is that the base image and the virtual machine are on the same storage, and the process of starting the virtual machine in batches is mainly to read and write the image itself, so that the virtual machine is started in batches , and the basic image is also on the same storage, which will undoubtedly lead to a significant decrease in the performance of the storage device; if the image and the virtual machine are placed on different storages, the performance can be improved and the cost can be reduced
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[0016] see figure 1 As shown, a kind of realization method of cross-area storage and distribution of basic image based on Xen virtualization platform of the present invention, described realization method comprises:
[0017] Create a master disk on the storage warehouse SR with high performance IOPS (the number of read and write I / O operations per second); clone a differential disk a based on the master disk, and the differential disk a is also located in the storage warehouse with high performance IOPS on SR;
[0018] Create an empty disk c with the same size as the differential disk a on the common storage warehouse SR, and mark the empty disk c as the differential disk b;
[0019] Use the dd command (the dd command is a very useful command under Linux / UNIX, its function is to copy a file with a block of a specified size, and perform a specified conversion while copying.) Copy the contents of the difference disk a to the difference disk b. Set the parent attribute of the d...
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The invention provides a Xen virtualization platform based implementation method for trans-regional storage and distribution of base images. The implementation method comprises steps as follows: a mother disk is established on an SR (storage repository) of high-performance IOPS (input / output operations per second); a difference disk a is cloned on the basis of the mother disk and is also located on the SR of the high-performance IOPS; an empty disk c with the same size as the difference disk a is established on a common SR and is marked as a difference disk b; content of the difference disk a is copied on the difference disk b, a parent attribute of the difference disk b is set as the mother disk; the difference disk a is deleted, and the difference disk b is taken as a system disk to be mounted on a virtual machine of a Xen virtualization platform; therefore, the virtual machine is located on the common SR, and the base images are located on the SR of the high-performance IOPS; once the virtual machine is started, data of the base images can be distributed in the virtual machine. According to the implementation method, the images and the virtual machine are arranged in different memories, the performance can be improved, and the cost is reduced.
Description
technical field [0001] The invention relates to the technical field of network communication, in particular to a method for realizing cross-area storage and distribution of basic images based on a Xen virtualization platform. Background technique [0002] Xen is a virtual machine monitor based on an open source software organization (Virtual Machine Monitor referred to as VMM), which allows multiple operating system instances to run simultaneously on a single physical machine. [0003] Xen is a system virtual machine based on open source (Open Source) code. It was originally designed and developed based on the 32-bit X86 architecture, and supports up to about 100 virtual machines running at the same time. The management interface (Hypercalls) and event (Events) mechanism introduced by Xen, as well as the pre-defined shared memory data exchange mechanism between the virtual machine and VMM, all make the new client architecture (Xen virtual machine architecture) have a higher ...
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IPC IPC(8): G06F3/06G06F9/455
CPCG06F3/0604G06F3/065G06F3/0667G06F9/45558G06F2009/45562
Inventor 郑芳友张辉夏威
Owner FUJIAN CENTM INFORMATION