Access method and device for distributed storage system

A distributed storage and storage system technology, applied in the access field of distributed storage systems, can solve problems such as increasing overhead, driving unfavorable maintenance and updating, and achieves reduction of switching overhead, simple and fast access, and avoidance of inconvenience. The effect of flexibility

Active Publication Date: 2018-02-02
ALIBABA GRP HLDG LTD
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  • Claims
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Problems solved by technology

On the one hand, the driver in the kernel mode is not conducive to maintenance and updates. On the other hand, the switching of I / O requests between the user mode and the kernel mode increases the overhead.

Method used

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  • Access method and device for distributed storage system
  • Access method and device for distributed storage system
  • Access method and device for distributed storage system

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Embodiment Construction

[0015] As mentioned above, the inventor noticed that traditionally, the storage system is mounted on the kernel device of the physical machine. When accessing the storage system, the I / O request needs to be connected to the storage system through the device driver of the kernel. During this process, the process needs to switch between the user state and the kernel state, so the overhead is increased, and the implementation complexity of the kernel state driver is high, which is not conducive to maintenance and update.

[0016] The main idea of ​​this application is that the storage system is no longer mounted on the kernel device, but the I / O request of the user mode is directly connected to the storage system of the user mode through a user mode driving mode. More specifically, according to the concept of the present application, the configuration file of the virtual machine is configured to include the corresponding relationship between the storage location of the virtual mac...

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Abstract

The present application relates to an access method and equipment for a distributed storage system. The access method of the distributed storage system is characterized in that it includes: receiving a data input / output request of a virtual machine and a configuration file of the virtual machine, the data input / output request includes storage location information on the virtual machine, and the configuration file includes information related to the virtual machine The storage system information corresponding to the storage location on the virtual machine; and according to the configuration file, the data input / output request is connected to the storage system corresponding to the storage location information on the virtual machine through the interface corresponding to the storage system. In this way, the access of the distributed storage system can be completed in the user mode without using the device driver of the kernel, thereby avoiding the inflexibility of the kernel device driver, and reducing the I / O request between the kernel mode and the user mode. switching overhead. In addition, the access of various storage systems can be supported more simply and quickly.

Description

technical field [0001] The present application relates to the field of cloud computing, and more particularly relates to a method and device for accessing a distributed storage system. Background technique [0002] Although the content herein is set forth under the heading of background art, it also contains the discoveries and ideas of the inventors, so it should not be regarded as the prior art. [0003] With the advent of the cloud era, storage virtualization technology and distributed storage technology are widely used in the field of cloud computing, and various distributed virtual storage systems (referred to as "distributed storage systems" in this article) emerge as the times require. [0004] Traditionally, the virtual storage system is usually mounted on a certain device (such as block device or character device) of the physical machine, that is, the virtual machine configuration file includes the correspondence between the virtual machine disk location and the ker...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08
Inventor 万佳陈伟才
Owner ALIBABA GRP HLDG LTD
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