start
Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revision | ||
|
start [2016/07/26 21:23] Jaegeuk Kim |
start [2016/12/03 07:59] (current) Jaegeuk Kim [Products] |
||
|---|---|---|---|
| Line 5: | Line 5: | ||
| F2FS was designed on a basis of a log-structured file system approach, which it adapted to newer forms of storage. Jaegeuk Kim, the principal F2FS author, has stated that it remedies some known issues of the older log-structured file systems, such as the snowball effect of wandering trees and high cleaning overhead. In addition, since a NAND-based storage device shows different characteristics according to its internal geometry or flash memory management scheme (such as the Flash Translation Layer or FTL), it supports various parameters not only for configuring on-disk layout, but also for selecting allocation and cleaning algorithms. | F2FS was designed on a basis of a log-structured file system approach, which it adapted to newer forms of storage. Jaegeuk Kim, the principal F2FS author, has stated that it remedies some known issues of the older log-structured file systems, such as the snowball effect of wandering trees and high cleaning overhead. In addition, since a NAND-based storage device shows different characteristics according to its internal geometry or flash memory management scheme (such as the Flash Translation Layer or FTL), it supports various parameters not only for configuring on-disk layout, but also for selecting allocation and cleaning algorithms. | ||
| - | ====== Features ====== | + | ====== Design ====== |
| - | * Multi-head logging | + | [[wp>F2FS]] |
| - | * Multi-level hash table for directory entries | + | |
| - | * Static/Dynamic hot and cold data separation | + | [[https://www.usenix.org/conference/fast15/technical-sessions/presentation/lee|USENIX FAST'15]] |
| - | * Adaptive logging scheme | + | |
| - | * Configurable operational units | + | [[http://elinux.org/images/1/12/Elc2013_Hwang.pdf| Embedded Linux Conference 2013]] |
| - | * Dual checkpoint | + | |
| - | * Roll-back and roll-forward recovery | + | [[https://events.linuxfoundation.org/images/stories/pdf/klf2012_j_kim.pdf|Korea Linux Forum 2012]] |
| - | * Heap-style block allocation | + | |
| - | * TRIM/FITRIM support[3] | + | [[https://lwn.net/Articles/518988/|LWN.net: An f2fs teardown 2012]] |
| - | * Online fs defragmentation/file defragmentation[4] | + | |
| - | * Inline xattrs[5]/data[6]/dir[7] | + | ====== Products ====== |
| - | * Offline filesystem check (Check and fix inconsistency[8]) | + | * Oneplus 3T (2016) |
| - | * Atomic operations[9] | + | * Huawei Mate 9 (2016) |
| - | * Filesystem-level encryption[10] | + | * Moto Z (2016) |
| - | * Offline resizing[11] | + | * Huawei P9/Honor 8/V8 (2016) |
| - | * Inner periodically data flush[12] | + | * Motorola Droid family (2013) |
| - | * Extent cache[13] | + | * Moto X Family (2013/2014/2015) |
| + | * Moto G family (2013/2014) | ||
| + | * Moto E LTE (2015) | ||
| + | * Google Nexus 9 (2014) | ||
| + | * Moto MSM8960 JBBL devices (2012) | ||
| + | |||
| + | ====== OS Compatibility ====== | ||
| + | |||
| + | ^ Distribution ^ Description ^ | ||
| + | | [[https://www.openmandriva.org/|OpenMandriva]] | F2FS has been fully supported since Lx 3 release. | | ||
| + | | [[https://wiki.archlinux.org/index.php/F2FS|Archlinux]] | GRUB doesn't support F2FS, so /boot should be other filesystem. | | ||
| + | | [[https://ubuntuforums.org/showthread.php?t=2326934|Ubuntu]] | GRUB and installer don't support F2FS, so need to install /root manually. | | ||
| - | ====== TODO list ====== | ||
| - | * Better direct I/O | ||
| - | * Transparent [[Data compression|compression]] | ||
| - | * [[Data deduplication]] | ||
| - | * Removable device support | ||
| - | * Windows driver supporting F2FS | ||
start.1469568220.txt.gz · Last modified: 2016/07/26 21:23 by Jaegeuk Kim
Page Tools
Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Noncommercial-Share Alike 4.0 International
