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|1. (WO2018102969) CONTROL METHOD, DEVICE AND SYSTEM FOR DATA READING-WRITING COMMAND IN NVME OVER FABRIC ARCHITECTURE|
|Applicants:||HUAWEI TECHNOLOGIES CO., LTD.
|Title:||CONTROL METHOD, DEVICE AND SYSTEM FOR DATA READING-WRITING COMMAND IN NVME OVER FABRIC ARCHITECTURE|
A control method, device and system for a data reading-writing command in an NVMe over Fabric network, resolving the problem wherein due to insufficient storage space in a buffer unit in a target, the processing mechanism is complicated due to buffering data reading-writing commands. By means of said method, before a control device sends a first data reading-writing command, it is determined whether an available storage space of a buffer unit in a storage device is capable of buffering a storage space required for a first data which is to be transmitted by said first data reading-writing command; said first data reading-writing command is only sent when the required storage space is less than or equal to said available storage space, the transmission of said first data reading-writing command is suspended when the required storage space is greater than said available storage space. Thus, said control device sends a corresponding data reading-writing command only when a buffer unit is capable of buffering data which is required to be transmitted by the data reading-writing command, thereby avoiding the problem wherein the processing mechanism for a network card in a storage device is complicated due to buffering data reading-writing commands.