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1. (WO2017054737) ADDRESS MAPPING METHOD AND DEVICE BASED ON MASS SOLID-STATE STORAGE

Pub. No.:    WO/2017/054737    International Application No.:    PCT/CN2016/100631
Publication Date: Fri Apr 07 01:59:59 CEST 2017 International Filing Date: Thu Sep 29 01:59:59 CEST 2016
IPC: G06F 12/06
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
Inventors: XU, Lu
许璐
SUN, Yaping
孙亚萍
Title: ADDRESS MAPPING METHOD AND DEVICE BASED ON MASS SOLID-STATE STORAGE
Abstract:
Disclosed is an address mapping method based on a mass solid-state storage, which is characterized in that, the method comprises: obtaining a write command for writing the data to the solid-state hard disk, the write command carries the data to be written and a logical block address of the data to be written (101); inquiring, according to a global 2nd level mapping table, a 3rd level mapping table in a main memory corresponding to the logical block address (S102); if there is no 3rd level mapping table corresponding to the logical block address in the main memory, then indexing, according to the global 2nd level mapping table, the 3rd level mapping table in the solid-state hard disk, and reading the 3rd level mapping table in the solid-state hard disk corresponding to the logical block address and storing it to the main memory (S103); controlling a solid-state hard disk controller to assign a physical page number (PPN) for the logical block address, and storing the PPN to the 3rd level mapping table corresponding to the logical block address in the main memory (S104); writing the data to be written to the PPN (S105).