Method and device for operating logic space by SSD (Solid State Disk), storage medium and SSD equipment

Abstract

The invention relates to the technical field of data storage, and provides a method and device for operating a logic space by an SSD, a storage medium and SSD device.The method comprises the steps that a Vendor command sent by a host and used for operating the logic space NS is received, and a host data cache address in the Vendor command is set as a cache address of configuration information of the NS to be operated, a function custom field in the Vendor command is set as the operation type and number of the NS to be operated; determining the data length of the configuration information required to be read from the host according to the number of the NS to be operated; reading the configuration information from the cache address of the configuration information of the NS to be operated according to the data length; and creating or deleting the NS according to the operation type of the NS to be operated and the read configuration information. According to the method, the interaction process of the host and the equipment in the NS creating and deleting process can be greatly reduced, and the time for configuring the NS is saved.

Description

technical field [0001] The present invention relates to the technical field of data storage, in particular to a method, device, storage medium and SSD equipment for operating a logic space of an SSD. Background technique [0002] An NVMe (Non-Volatile Memory Express) SSD is mainly composed of SSD controller, flash memory space and PCIe interface. The NVMe protocol supports the host to use several independent logical spaces to manage the flash memory space through the SSD controller. Each logical space thus divided is called NS (namespace). [0003] With the popularity of NVMe SSD hard drives, more and more SSDs support multiple types of NS due to the diversity of user requirements and usage scenarios for SSDs. In the NVMe SSD protocol, NS management commands are also defined to realize the creation, deletion, and use of NS. When creating and deleting an NS, the SSD device and the host will be required to interact multiple times. Usually, at least two commands must be issue...

AI Technical Summary

Problems solved by technology

As the number of created NS increases, the number of management nodes will continue to increase, the time for each mapping establishment will be extended, and the management complexity will also increase, resulting in prolonged creation or deletion of NS

Moreover, each NS creation and deletion operation will involve the internal space management and data management of the SSD device. Using the above operations in a multi-NS environment increases the complexity of SSD data and space management.

Therefore, in the scenario where NS configuration needs to be changed frequently, the existing implementation method will greatly increase the time for NS configuration and increase the development cost of SSD devices.

Images