Deterministic Crash Recovery for NAND Flash Based Storage Systems
Chi Zhang, Yi Wang, Tianzheng Wang, Renhai Chen, Duo Liu, Zili Shao · 2014
NAND flash memory has long been the dominant storage medium in mobile devices. However, power failure may occur at any time and result in loss of important data. Crash recovery therefore becomes vitally important in NAND flash memory storage systems. As flash translation layer (FTL) directly manages flash memory using various metadata, the problem of FTL crash recovery in NAND flash is how to efficiently and effectively maintain and recover the consistency of FTL metadata after system crash.