Method and device for processing input and output requests

Abstract

The invention discloses a method and device for processing input and output requests and belongs to the field of computers. The method includes the steps that the multiple IO requests are acquired; according to parameters of the acquired IO requests, the acquired IO requests are packaged to form an IO order, wherein the parameters of each IO request in the multiple IO requests at least comprise an LUN corresponding to the IO request, the priority of the IO request and a command description character of the IO request; the IO order is sent to a storage system, so that the storage system analyzes the multiple IO requests from the IO order and processes the multiple IO requests. The device comprises an acquisition module, a packaging module and a first transmission module. By the adoption of the method and device, the number of IO orders between a host and the storage system is reduced, and the read-write performance and the throughput capacity of the storage system are improved.

Description

technical field [0001] The invention relates to the field of computers, in particular to a method and equipment for processing input and output requests. Background technique [0002] With the rapid development of computer technology, multiple virtual machines can be simulated on one host. Multiple applications run on each virtual machine. When the application needs the storage system to perform an operation, the application sends an IO (input / output, input / output) request to the storage system, and the virtual machine passes the The virtual machine monitor on the host sends the IO request to the storage system. [0003] Wherein, one virtual machine corresponds to multiple virtual disks, and the virtual disks are stored on the storage system. Since virtual machines use virtual disks as the operation granularity while storage systems use LUN (Logical Unit Number) as the operation granularity, in order to ensure that the operation granularity of the virtual machine is consis...

AI Technical Summary

Problems solved by technology

[0004] Since there is a one-to-one correspondence between virtual disks and LUNs, the virtual machine monitor can only sort and merge the IO requests sent by a virtual disk, but cannot sort and merge the IO requests of a virtual machine as a whole. It is even more impossible to perform overall IO sorting and merging of IO requests from multiple virtual machines

In this way, the storage system will face a large number of IO instructions, which greatly reduces the read and write performance and throughput of the storage system.

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