Multi-root I/O (Input/Output) virtualization sharing method and system

Abstract

The invention provides a multi-root I / O (Input / Output) virtualization sharing method and system. The multi-root I / O virtualization sharing system comprises a root node subsystem, an I / O equipment subsystem and a multi-root I / O virtualization sharing controller, wherein the root node subsystem comprises N root nodes; each root node consists of a root complex, a CPU (Central Processing Unit) and an internal memory; the CPU and the internal memory are connected with the root complex; the I / O equipment subsystem comprises M I / O equipment; each I / O equipment can provide services for a plurality of virtual machines simultaneously; the multi-root I / O virtualization sharing controller consists of PCIe (Peripheral Component Interface Express) upstream ports, a PCIe multi-root switchover and PCIe downstream ports; and the multi-root I / O virtualization sharing controller is used for coupling the root node subsystem with the I / O equipment subsystem through a PCIe port protocol, so that I / O equipment resources are directly shared by a plurality of root nodes.

Description

technical field [0001] The invention relates to I / O virtualization technology, in particular to a multi-root I / O virtualization sharing method and system. Background technique [0002] In a traditional data center or cloud computing center, each blade server has independent I / O resources, such as network cards and HBA adapters. However, the tight coupling of computing and I / O resources makes the expansion of the two types of resources limited by the server space at the same time. In addition, high-performance I / O devices (such as 10GigE network cards) are only attached to one server, which undoubtedly reduces their utilization efficiency and increases the total system cost. In order to solve the above problems, it is necessary to release the tight coupling between computing and I / O resources, and the key is to realize the sharing of I / O devices among multiple servers. [0003] In recent years, the sharing technology of I / O devices has undergone transformative development. ...

AI Technical Summary

Problems solved by technology

However, due to the major changes to the original system by the MR-IOV protocol of PCI-SIG (including the modification of the PCIe basic protocol, PCIe device structure and PCIe switch structure), it is difficult to be accepted by the industry

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