Fuse Ext4

When layered on top of Ext4 compared to native Ext4. We used a wide variety of micro- and macro-workloads, and different hardware using basic and optimized config-urations of FUSE. We found that depending on the work-load and hardware, FUSE can perform as well as Ext4, but in the worst cases can be 3 slower. Fuse box diagram (location and assignment of electrical fuses and relays) for Jeep Wrangler (TJ; 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006). IGN 1 Relay – SBA Fuse, ETC/ECM Fuse, PCM 1 Fuse, INJ 1 Fuse, INJ 2 Fuse PCM 1 15A Powertrain Control Module (PCM). Mass Air Flow (MFS) Sensor. Evaporative Emission (EVAP) Canister Purge Solenoid, Fuel Composition Sensor, Secondary Fuel Pump Relay ETC/ECM 15A Throttle Actuator Control (TAC) INJ 1 15A Fuel Injectors-Odd-Numbered. What is FUSE?¶ FUSE is a userspace filesystem framework. It consists of a kernel module (fuse.ko), a userspace library (libfuse.) and a mount utility (fusermount). One of the most important features of FUSE is allowing secure, non-privileged mounts. This opens up new possibilities for the use of filesystems.

  1. Fuse Ext4
  2. Fuse Ext4
  3. Fuse Ext4 Linux

Translation(s): English - Français - Italiano - 简体中文

From Wikipedia:

In computing, a file system or filesystem (often abbreviated to fs), controls how data is stored and retrieved. Without a file system, information placed in a storage medium would be one large body of data with no way to tell where one piece of information stops and the next begins. A file system separates the data into pieces and gives each piece a name. Each group of data is called a 'file'.

There are many different kinds of file systems. Each one has different structure and logic, properties of speed, flexibility, security, size and more.

Files and directories themselves are placed on top of the file system, therefore it is common to refer to the file/directory structure itself as 'file system'. On GNU/Linux, the Filesystem Hierarchy Standard defines the naming scheme and hierarchy between files and directories themselves.

File systems usually sit on top of hard disk partitions or LVM volumes. In Debian, ext4 is the default file system for new installations.

GNU/Linux can be installed on any filesystem that supports some special constructs (file permissions, symbolic links and device files).

Many file systems are journaling, meaning they are able to prevent data loss on system crashes or power failures.

Contents

Mounting a filesystem

In GNU/Linux the contents of a filesystem can be made available under a directory, by mounting the filesystem over the directory. Here are some ways to mount a filesystem:

  • The mount command. For example mount /dev/sdd1 /mn/ would make contents of the first partition of the /dev/sdd disk device, available in the /mnt/ directory.

  • Editing the fstab file

Filesystems available in Debian Linux kernel

Note0: Debian HURD and Debian kFreeBSD have other file systems.

Note1: the Features list are incomplete at this time.

Note2: This table is uptodate as of 2.6.28 kernel.

Filesystem name

Features?

Documentation(s)

Description

Distributions

File systems often used as linux system partition

ext4

R

(default filesystem in Debian) Fourth Extended Filesystem with extents

>= Squeeze

ext2

RS

kDoc, WPedia

Second Extended Filesystem

All?

ext3

RS

kDoc, WPedia

Second Extended Filesystem with journaling extensions

All?

ext4dev

R

Fourth Extended Filesystem with extents
not for production, in development

Etch-n-Half ~ Lenny

jfs

R

The Journaled Filesystem (JFS)

All?

xfs

R

SGI XFS Filesystem

All?

reiserfs

R

ReiserFS journaled filesystem

All?

Other File systems

9p

Plan 9 9p remote filesystem protocol

All?

adfs

Acorn (and Risc OS) Advanced Disc Filing System

All?

affs

I

Amiga filesystem support for Linux

All?

kafs

N

AFS Client File System

All?

autofs4

Auto-mount filesystems. See autofs

All?

autofs

Auto-mount filesystems. See autofs

All?

befs

I

BeOS File System (BeFS) driver

All?

bfs

I

SCO UnixWare BFS filesystem for Linux

All?

btrfs

RS

B-Tree filesystem

>= Jessie

cifs

N I

VFS to access servers complying with the SNIA CIFS Specification e.g. Samba and Windows

All?

coda

Coda Distributed File System VFS interface

All?

configfs

Simple RAM filesystem for user driven kernel subsystem configuration.

All?

cramfs

cram a filesystem onto a small ROM

All?

dlm

Distributed Lock Manager

All?

ecryptfs

eCryptfs

All?

efs

SGI EFS, Extent File System (Irix <0.6)

All?

fat

I

MS & DR DOS FAT filesystem

All?

freevxfs

Veritas Filesystem (VxFS) driver

All?

fuse

Filesystem in Userspace (backend for various filesystems)

All?

gfs2

N

Global File System

All?

hfs

I

Macintosh HFS Filesystem

All?

hfsplus

I

HFSPlus / Extended Macintosh Filesystem

All?

hpfs

I

High Performance Filesys (OS/2's HPFS)

All?

isofs

CD

CD/DVD filesystem (ISO-9660 / ECMA-119)

All?

jbd2

Generic filesystem journal-writing code (for ext4)

Squeeze

jbd

Generic filesystem journal-writing code (for ext2/ext3)

All?

jffs2

MTD

The Journalling Flash File System, v2

All?

minix

Minix native filesystem. (was used in Linux before ExtFS!)

All?

msdos

I

MS-DOS filesystem support

All?

ncpfs

Netware NCP network protocol

All?

nfs

N

Networks Filesystem

All?

ntfs(depreciated)

I

NTFS 1.2/3.x driver - Copyright (c) 2001-2007 Anton Altaparmakov

All?

ocfs2

OCFS2 1.3.3

All?

omfs

OMFS (ReplayTV/Karma) Optimized MPEG Filesystem

>= Squeeze

qnx4

QNX (OS) Filesystem

All?

romfs

ROM filesystem. See genromfs

<= Etch

sysv

System V, V7 and Coherent and Xenix filesystems

All?

ubifs

MTD

UBIFS - UBI File System

=> Squeeze

udf

CD

Universal Disk Format Filesystem

All?

ufs

Unix filesystem, used in BSDs, SunOS, Nextstep, Openstep...

All?

vfat

I

VFAT filesystem support

All?

zfs

The Z File System

=> Stretch (DKMS)

Features Legend :

  • Root: Suitable for system file system (like root and /usr...).

  • Interoperability: The filesystem is mostly implemented for Interoperability.

  • Distributed: file system.

  • Network Filesystem.

  • Sparsefile support

  • CD: Suitable for CD and/or DVD, etc.

  • MTD: Suitable for MTD devices.

Hints :

  • To list the FS types supported by your kernel, read its config file, run :

  • To list the FS modules available in your kernel : To list the FS supported by your running kernel and currently loaded modules :

FUSE Filesystems

You can get the list of FS supported by through FUSE, by looking at the reverse dependencies on the package fuse-utils. At the time of writing :

Package name

Description

Distributions

FUSE filesystem for APT source repositories

All

virtual filesystem to access archives, disk images, remote locations

All

implements a filesystem representing a live Beagle query

Sid

EncFS system tray applet for GNOME

All

filesystem to access FTP hosts based on FUSE and cURL

All

mount a WebDAV resource as a regular file system

All

encrypted virtual filesystem

All

virtual filesystem for flickr online photosharing service

All

user-space directory concatenation

?

filesystem to mount WebDAV shares

All

File System in User Space - Module for ext2

All

File System in User Space - Module for FAT

All

FUSE module to mount ISO filesystem images

All

File System in User Space - Module for ISO9660

All

filesystem client based on the SMB file transfer protocol

All

clustered file-system

All

Use your GMail account as a filesystem

?

filesystem to mount digital cameras

All

PAM module to automatically mount encfs filesystems on login

All

PAM module that can mount volumes for a user session

All

Fuse based remote filesystem for LTSP thin clients

All

file system for unifying several mount points into one

All

FUSE filesystem for Media Transfer Protocol devices

All

userspace filesystem client for MythTV

All

read/write NTFS driver for FUSE

>= Wheezy

ntfsprogs (depreciated)

tools for doing neat things in NTFS partitions from Linux

All

mount filesystem of ObexFTP capable devices

All

Access EPOC device (Psion PDA) over a serial link

All

maps media files to an arbitrary directory structure

All

Read-Only Filesystem for FUSE

All

Full-featured file system for online data storage

All

filesystem client based on SSH File Transfer Protocol

All

View-OS in user space - ext2 module for UMFUSE

All

View-OS in user space - FAT module for UMFUSE

All

View-OS in user space - ISO9660 module for UMFUSE

All

Fuse implementation of unionfs

All

View and edit Wikipedia articles as if they were real files

All

implementation of Sun's ZFS filesystem in userspace

>=Squeeze

Special file systems

Some sample use cases for special file systems:

aufs, unionfs
Fuse
can be used to mount two filesystems, the one one on top of the other. This is typically to mount a ramdisk on top of a (read-only!) cdrom... so it's virtually possible to 'write' and modify the files. (of course, in this situation the data is lost on reboot)
xmount

allows mounting .vmdk (VMware) and .vdi(VirtualBox) image.

See also

  • Documents in the /usr/share/doc/linux-doc-2.6.26/Documentation/filesystems/ kernel module documentation (in package linux-doc-2.6 or above)

ToDo: Some modules provides 2 filesystems (for mount -t). e.g loading sysv provides sysv and v7 in /proc/filesystems.

CategorySystemAdministrationCategoryStorage

  1. FUSE doesn't provide any filesystem it-self. see 'apt-cache rdepends fuse-utils' (1)

Data as file

Easily mount any kind of data as a virtual file and access it transparently from all your Windows applications. It can literally be anything: files from other locations, stored locally or remotely in the cloud... Creativity will be your limit.

Access Control

Working in user mode has several benefits and access control is one of them. You can have complex and custom access checks even with multiple security layers if you want to.

Be safe

Dokan takes care of the hard stuff and you never have to go deeper into kernel mode. This means you can develop your driver safely without having to fear BSOD at any test. Dokan code is available online since 2007. While people came and left the code remains alive thanks to the open source community.

Driver. Don't.

When you want to create a new file system on Windows you need to develop a file system driver. Developing a device driver that works in the kernel mode on Windows requires highly technical skills.
By using Dokan, you can create your own file systems very easily without writing device drivers. Dokan is similar to FUSE (Linux user mode file system) but works on Windows.

Fuse Ext4

User-mode API. As you like.

Dokan User-mode API provides functions to mount/unmount your driver and several callbacks to implement on your application to have a fully working user mode file system driver.

Additionally to the default provided C library, the API is also available for DotNet, Java, Delphi and Ruby.

FUSE Wrapper.

Dokan FUSE (Filesystem in Userspace) is a wrapper library that makes Dokan compatible with FUSE API. You simply need to rebuild your FUSE source code without changes with Cygwin/MinGW and link against the library to make it work on Windows. Now available by default in the main source repository and installers.

Projects. See it working.

Dokan is used in a variety of projects, a short list below.
Keybase A cryptographically secure file mount using PGP key.
Nodrive A confidential encrypted cloud storage.
DokanCloudFS Access to different cloud storage services as virtual driver (OneDriver, Google Drive, MEGA, ...).
MooseFS Fault-tolerant, POSIX-compliant, network distributed filesystem
Atmo O Inter & Intra document aliasing
Kortex Mod Manager Mod manager for various PC games.
yasfw Yet Another SSHFS for Windows
Shaman.Dokan.Warc Mounts WARC files (web archives) as FS.
Shaman.Dokan.Archive Mounts 7zip/ZIP/RAR files as FS.
fuse-nfs-crossbuild-scripts fuse-nfs for windows using dokany.
Dokan SSHFS SSH File System
MLVFS Magic Lantern Video File System
Win-SSHFS SSH with SSH.NET File System
RedFS Single File System
encfs4win Encryption File System
Opendedup CDFS Deduplication Based File System
Dokan NFC RFID / NFC File System
Ninefs 9p File System
WinUnionFS UnionFS-like File System
MSSQLFS MS SQL File System
PeoneFS Pseudo Encrypted and Obfuscated File System
DiscUtils Image/Partition mounter using DiscUtils
ZFS-Win ZFS File System
FtpUse FTP File System
ChunkFS Chunked File System
CueMounter Cue File System
SrcDemo² Render smoother Source Engine videos, faster
xbox-iso-vfs Xbox ISO File System
......

Frequently Asked Questions

The Dokan Library project was originally created and maintained by Hiroki Asakawa from 2007 to 2011.
It has been maintained from 2011 to 2014 by the community with different fork.
Since 2014, the project is highly maintained by Adrien J. and Maxime C. with the fork Dokany and gracefully code signed by the company ISLOG.
Dokany is highly maintained since it starts. The community is growing and number of contributors (that we ) are also growing every day.
You can find a full list of supported operating system here.
Fuse vs ext4
Until version 0.7.4, Dokany focused to improve and fix Dokan 0.6.0 (by Hiroki Asakawa) without breaking compatibility. You can find the full change log here But in simple words: A lots of fixes, more stability and it is much more near of a real file system than ever.
It is ! There are still a few things `not available yet` and on the roadmap but these are well documented today on github so if you don't need it, you should be fine. If you do commercial products based on Dokany, please be sure to respect licenses and `be fair` if it becomes a success, it is always appreciated being supported for an open source projects.
The project is supported by ISLOG company which provide tools, driver certificate for releases, and other kinds of development materials. The project is used internally by our company so some features and bug fixes was developed at our business time, but the project is a personal initiative and mainly supported at personal time.

Support Us. Thank you.

Maintaining a Windows driver and its associated libraries requires time and specific knowledge (ok, as always). We focus on stability and improvement but any help (code contribution, testing, issues resolving ...) is highly appreciated.

Dokan reviving through Dokany fork is a personal initiative and we don't get money from it. If you're making a business based on Dokan or just enjoy it, please consider to support the real current developers using bounties. Alternatively you can also directly use Github Sponsor button. Be fair.

Fuse Ext4

They already trust and sponsor Us.

Fuse Ext4 Linux

Big thanks to them !