I/O transmission method and system applied to cluster storage system

Abstract

The invention provides an output-input transmission method and system for a cluster storage system. The method includes the steps: a first controller receives an output-input signal transmitted by a main unit and judges whether the first controller is a master controller corresponding to the output-input signal and having a preset logical volume; if yes, the first controller controls the logical volume to read and write data according to the output-input signal; if not, the first controller transmits the output-input signal to a second controller serving as a logical volume master controller; the second controller controls the logical volume to read and write data according to the output-input signal; after the logical volume reads and writes the data, the first controller returns a reading-writing completion signal to the main unit. The output-input transmission method and system has the advantages that the redirecting function of NTB (non-transparent bridging) and high data transmission rate of a bus interface are made full use, data transmission efficiency is increased, address field between master and slave buses is effectively isolated, the problem of data collision is effectively solved, and the need for data uniformity is met.

Description

technical field [0001] The invention relates to the field of network technology, in particular to an input-output transfer method and system applied to a cluster storage system. Background technique [0002] Transparent bridging is usually used in bus extension. The addresses of the primary side and the secondary side are completely transparent. The address transfer between the primary side and the secondary side is a direct transfer mode without address translation. Isolating the PCI bus segment through a transparent bridge can provide the ability to expand the number of loads and match different operating frequencies, bus widths or voltages, but it does not have the function of isolating the address domain between the master and slave bus segments. [0003] Single-processor systems based on PCI (Peripheral Component Interconnect) rely on the main processor to enumerate and configure the system, and to handle interrupts and error conditions. The main processor effectively ...

AI Technical Summary

Problems solved by technology

In a PCI-based multiprocessor system, if there are two or more processors in the system and they are not specifically isolated, each processor will try to provide the main processor function and compete with each other for control of the system. Data is prone to conflict

[0004] The traditional use of SAS (Serial Attached SCSI, serial connection SCSI) as the transmission function of bilateral controllers requires protocol conversion, and the data exchange efficiency is low; while using PCI-E (PCI Express, bus interface) as the information transmission function requires Configure a buffer at the receiving end, and a large amount of data needs to be transmitted in segments, and the data transmission efficiency is low

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