File access method and apparatus, and storage system
US10157143B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2017 |
| Grant date | Dec 18, 2018 |
| Priority date | — |
| Expiry date | Apr 14, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/1024
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A file access method and apparatus, and a storage system are provided. After receiving a file access request including a file identifier, first physical address space is accessed according to first virtual address space and a first mapping relationship between the first virtual address space and the first physical address space storing a file system. After obtaining, from the first physical address space, an index node of an object file indicated by the file identifier, a file page table is obtained according to information included in the index node, where the file page table records second physical address space of the object file. Then, second virtual address space is allocated to the object file. After establishing a second mapping relationship between the second physical address space and the second virtual address space, the object file in the second physical address space is accessed according to the second virtual address space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.