Method, device and system for controlling data read-write command in NVMe over Fabric architecture

• Main Authors: WU PEI, QU HUICHUN, ZHANG JINBIN, QIU XIN, GISSIN VICTOR
• Format: Patent
• Language: Chinese; English
• Published: 05.11.2019
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The embodiment of the invention provides a method, equipment and a system for controlling a data read-write command in an NVMe over Fabric network, and aims to solve the problem of complex processingmechanism caused by caching of the data read-write command due to insufficient storage space of a cache unit in a Target. The method includes: before a control device sends a first data read-write command, judging whether the available storage space of the cache unit in the storage equipment can cache the storage space occupied by the first data to be transmitted by the first data read-write command, sending the first data read-write command when the storage space occupied by the first data to be transmitted by the first data read-write command is less than or equal to the available storage space, and pausing sending the first data read-write command when the storage space occupied by the first data to be transmitted by the first data read-write command is larger than the available storagespace. Thus, the control