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Comment: some special file systems use cases
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20306
cat /proc/filesystems
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Deletions are marked like this. | Additions are marked like this. |
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To list the FS supported by your running kernel {{{ cat /proc/filesystems }}} |
Filesystems are a collection of files that are stored in the system in some way. There are numerous ways of storing files and therefore, there are many types of filesystems.
Every filesystem type describes a uniform method of storing files onto a storage medium(eg. a partition on a hard disk). Without these descriptions, it would be very difficult to share files with other people. One would have to give a description of the way that they stored a file on a floppy disk as well as the actual floppy disk they give to someone.
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 use as linux system partition |
All? |
|||
ext2 |
RS |
Second Extended Filesystem |
All? |
|
RS |
Second Extended Filesystem with journaling extensions |
All? |
||
R |
Fourth Extended Filesystem with extents |
Etch-n-Half ~ Lenny |
||
R |
Fourth Extended Filesystem with extents. |
>= Squeeze |
||
jfs |
R |
The Journaled Filesystem (JFS) |
All? |
|
xfs |
R |
SGI XFS Filesystem |
All? |
|
reiserfs |
R |
ReiserFS journaled filesystem |
All? |
|
Other File systems |
All? |
|||
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? |
|
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? |
N |
|
Networks Filesystem |
All? |
|
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? |
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 supported fs types by your kernel, read it's config file, run :
awk '/# File systems/,/# Partition Types/' /boot/config-$(uname -r)* | pager
- To list the FS modules available in your kernel :
find /lib/modules/$(uname -r)/kernel/fs/
To list the FS supported by your running kernelcat /proc/filesystems
FUSE Filesystem
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 :
FUSE filesystem for APT source repositories |
|
virtual filesystem to access archives, disk images, remote locations |
|
implements a filesystem representing a live Beagle query |
|
EncFS system tray applet for GNOME |
|
filesystem to access FTP hosts based on FUSE and cURL |
|
mount a WebDAV resource as a regular file system |
|
encrypted virtual filesystem |
|
virtual filesystem for flickr online photosharing service |
|
user-space directory concatenation |
|
filesystem to mount WebDAV shares |
|
File System in User Space - Module for ext2 |
|
File System in User Space - Module for FAT |
|
FUSE module to mount ISO filesystem images |
|
File System in User Space - Module for ISO9660 |
|
filesystem client based on the SMB file transfer protocol |
|
clustered file-system |
|
Use your GMail account as a filesystem |
|
filesystem to mount digital cameras |
|
PAM module to automatically mount encfs filesystems on login |
|
PAM module that can mount volumes for a user session |
|
Fuse based remote filesystem for LTSP thin clients |
|
file system for unifying several mount points into one |
|
FUSE filesystem for Media Transfer Protocol devices |
|
userspace filesystem client for MythTV |
|
tools for doing neat things in NTFS partitions from Linux |
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mount filesystem of ObexFTP capable devices |
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Access EPOC device (Psion PDA) over a serial link |
|
maps media files to an arbitrary directory structure |
|
Read-Only Filesystem for FUSE |
|
filesystem client based on SSH File Transfer Protocol |
|
View-OS in user space - ext2 module for UMFUSE |
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View-OS in user space - FAT module for UMFUSE |
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View-OS in user space - ISO9660 module for UMFUSE |
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Fuse implementation of unionfs |
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View and edit Wikipedia articles as if they were real files |
Special file systems
Some sample use cases for special file systems:
- aufs, unionfs
- 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 /usr/share/doc/linux-doc-2.6.26/Documentation/filesystems/ kernel module documentation (in package linux-doc-2.6 or above)
FilesystemHierarchyStandard - The standard "Linux" Hierarchy.
?FileSystemsAndDisks with information about ext3 filesystems
?UsefulFiles
Wikipedia filesystem
ToDo: Some modules provides 2 filesystems (for mount -t). e.g loading sysv provides sysv and v7 in /proc/filesystems.
FUSE doesn't provide any filesystem it-self. see 'apt-cache rdepends fuse-utils' (1)