Flash translation layer (FTL) database journaling schemes
US8880786B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2012 |
| Grant date | Nov 4, 2014 |
| Priority date | — |
| Expiry date | May 18, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/0246
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method includes, in a storage device that includes a non-volatile memory and a volatile memory, maintaining at least one data structure that stores management information used for managing data storage in the non-volatile memory, such that at least a portion of the data structure is stored in the volatile memory. A sequence of journaling chunks is created during operation of the storage device, each journaling chunk including a respective slice of the data structure and one or more changes that occurred in the data structure since a previous journaling chunk in the sequence. The sequence of the journaling chunks is stored in the non-volatile memory. Upon recovering from an electrical power interruption in the storage device, the data structure is reconstructed using the stored journaling chunks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.