Manpage of FILESYSTEMS
FILESYSTEMSSection: Linux Programmer's Manual (5)
NAMEfilesystems - Linux filesystem types: ext, ext2, ext3, ext4, hpfs, iso9660, JFS, minix, msdos, ncpfs nfs, ntfs, proc, Reiserfs, smb, sysv, umsdos, vfat, XFS, xiafs,
DESCRIPTIONWhen, as is customary, the procfilesystem is mounted on /proc, you can find in the file /proc/filesystemswhich filesystems your kernel currently supports; see proc(5) for more details. If you need a currently unsupported filesystem, insert the corresponding module or recompile the kernel.
In order to use a filesystem, you have to mountit; see mount(8).
Below a short description of the available or historically available filesystems in the Linux kernel. See kernel documentation for a comprehensive description of all options and limitations.
- is an elaborate extension of the minixfilesystem. It has been completely superseded by the second version of the extended filesystem (ext2) and has been removed from the kernel (in 2.1.21).
- is the high performance disk filesystem used by Linux for fixed disks as well as removable media. The second extended filesystem was designed as an extension of the extended filesystem (ext). See ext2 (5).
- is a journaling version of the ext2filesystem. It is easy to switch back and forth between ext2and ext3. See ext3 (5).
- is a set of upgrades to ext3including substantial performance and reliability enhancements, plus large increases in volume, file, and directory size limits. See ext4 (5).
- is the High Performance Filesystem, used in OS/2. This filesystem is read-only under Linux due to the lack of available documentation.
- is a CD-ROM filesystem type conforming to the ISO 9660 standard.
- High Sierra
- Linux supports High Sierra, the precursor to the ISO 9660 standard for CD-ROM filesystems. It is automatically recognized within the iso9660filesystem support under Linux.
- Rock Ridge
- Linux also supports the System Use Sharing Protocol records specified by the Rock Ridge Interchange Protocol. They are used to further describe the files in the iso9660filesystem to a UNIX host, and provide information such as long filenames, UID/GID, POSIX permissions, and devices. It is automatically recognized within the iso9660filesystem support under Linux.
- is a journaling filesystem, developed by IBM, that was integrated into Linux in kernel 2.4.24.
- is the filesystem used in the Minix operating system, the first to run under Linux. It has a number of shortcomings, including a 64MB partition size limit, short filenames, and a single timestamp. It remains useful for floppies and RAM disks.
- is the filesystem used by DOS, Windows, and some OS/2 computers. msdosfilenames can be no longer than 8 characters, followed by an optional period and 3 character extension.
- is a network filesystem that supports the NCP protocol, used by
To use ncpfs, you need special programs, which can be found at
- is the network filesystem used to access disks located on remote computers.
- replaces Microsoft Window's FAT filesystems (VFAT, FAT32). It has reliability, performance, and space-utilization enhancements plus features like ACLs, journaling, encryption, and so on.
- is a pseudo filesystem which is used as an interface to kernel data structures rather than reading and interpreting /dev/kmem. In particular, its files do not take disk space. See proc(5).
- is a journaling filesystem, designed by Hans Reiser, that was integrated into Linux in kernel 2.4.1.
- is a network filesystem that supports the SMB protocol, used by
Windows for Workgroups, Windows NT, and Lan Manager.
To use smbfs, you need a special mount program, which can be found in the ksmbfs package, found at
- is an implementation of the SystemV/Coherent filesystem for Linux. It implements all of Xenix FS, SystemV/386 FS, and Coherent FS.
- is an extended DOS filesystem used by Linux. It adds capability for long filenames, UID/GID, POSIX permissions, and special files (devices, named pipes, etc.) under the DOS filesystem, without sacrificing compatibility with DOS.
- is an extended DOS filesystem used by Microsoft Windows95 and Windows NT. vfatadds the capability to use long filenames under the MSDOS filesystem.
- is a journaling filesystem, developed by SGI, that was integrated into Linux in kernel 2.4.20.
- was designed and implemented to be a stable, safe filesystem by extending the Minix filesystem code. It provides the basic most requested features without undue complexity. The xiafsfilesystem is no longer actively developed or maintained. It was removed from the kernel in 2.1.21.
SEE ALSOext2(5), ext3(5), ext4(5), proc(5), fsck(8), mkfs(8), mount(8)
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