Paper Info
Title
Efficient Metadata Management for Flash File Systems
Abstract
NAND flash memory becomes one of the most popular storage for portable embedded systems. Although many flash-aware file systems, such as JFFS2 and YAFFS2, were proposed, the large memory consumption and the longmount delay have been serious obstacles for large-capacity NAND flash memory. In this paper, we present a new flash-aware file system called DFFS (Direct Flash File System) which fetches only the needed metadata on demand from flash memory. In addition, DFFS employs two novel metadata management schemes, inode embedding scheme and hybrid inode indexing scheme, to improve the performance of metadata operations. Comprehensive evaluation results using microbenchmark, postmark, and Linux kernel compilation trace, show that DFFS has comparable performance to JFFS2 and YAFFS2, while achieving a small memory footprint and instant mount time.
Year
DOI
Venue
2008
10.1109/ISORC.2008.34
ISORC
Keywords
Field
DocType
flash-aware file system,novel metadata management scheme,large-capacity nand flash memory,flash file systems,efficient metadata management,large memory consumption,comparable performance,metadata operation,needed metadata,flash memory,small memory footprint,nand flash memory,meta data,kernel,indexing,embedded system,pediatrics,indexation,memory management,real time systems,logic gates,linux,distributed computing
JFFS2,File system,Flash file system,Flash memory,inode,Computer science,Flash memory emulator,Real-time computing,Memory management,inode pointer structure,Operating system,Embedded system
Conference
Citations 
PageRank 
References 
0
0.34
9
Authors
5
Name
Order
Citations
PageRank
Jaegeuk Kim1534.38
Heeseung Jo267439.34
Hyotaek Shim3575.21
Jin-Soo Kim41806122.94
Seungryoul Maeng573047.58