trusty (5) fs.5.gz

NAME

       filesystems  -  Linux  filesystem  types:  minix,  ext, ext2, ext3, ext4, Reiserfs, XFS, JFS, xia, msdos,
       umsdos, vfat, ntfs, proc, nfs, iso9660, hpfs, sysv, smb, ncpfs

DESCRIPTION

       When,  as  is  customary,  the  proc  filesystem  is  mounted  on  /proc,  you  can  find  in  the   file
       /proc/filesystems  which filesystems your kernel currently supports.  If you need a currently unsupported
       one, insert the corresponding module or recompile the kernel.

       In order to use a filesystem, you have to mount it; see mount(8).

       Below a short description of a few of the available filesystems.

       minix     is the filesystem used in the Minix operating system, the first to run under Linux.  It  has  a
                 number  of shortcomings: a 64MB partition size limit, short filenames, a single timestamp, etc.
                 It remains useful for floppies and RAM disks.

       ext       is an elaborate extension of the minix filesystem.  It has been completely  superseded  by  the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).

       ext2      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).  ext2 offers the best performance (in terms of speed and CPU usage) of  the  filesystems
                 supported under Linux.

       ext3      is  a  journaling  version of the ext2 filesystem.  It is easy to switch back and forth between
                 ext2 and ext3.

       ext4      is a set of upgrades to ext3 including substantial performance  and  reliability  enhancements,
                 plus large increases in volume, file, and directory size limits.

       Reiserfs  is  a  journaling filesystem, designed by Hans Reiser, that was integrated into Linux in kernel
                 2.4.1.

       XFS       is a journaling filesystem, developed by SGI, that was integrated into Linux in kernel 2.4.20.

       JFS       is a journaling filesystem, developed by IBM, that was integrated into Linux in kernel 2.4.24.

       xiafs     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 xia
                 filesystem is no longer actively developed or maintained.  It was removed from  the  kernel  in
                 2.1.21.

       msdos     is  the  filesystem  used  by DOS, Windows, and some OS/2 computers.  msdos filenames can be no
                 longer than 8 characters, followed by an optional period and 3 character extension.

       umsdos    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.

       vfat      is an extended DOS filesystem used by Microsoft  Windows95  and  Windows  NT.   VFAT  adds  the
                 capability to use long filenames under the MSDOS filesystem.

       ntfs      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.

       proc      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).

       iso9660   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 iso9660 filesystem 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 iso9660
                        filesystem to a UNIX host, and provide information  such  as  long  filenames,  UID/GID,
                        POSIX  permissions,  and  devices.   It  is  automatically recognized within the iso9660
                        filesystem support under Linux.

       hpfs      is the High Performance Filesystem, used in OS/2.  This filesystem is read-only under Linux due
                 to the lack of available documentation.

       sysv      is  an implementation of the SystemV/Coherent filesystem for Linux.  It implements all of Xenix
                 FS, SystemV/386 FS, and Coherent FS.

       nfs       is the network filesystem used to access disks located on remote computers.

       smb       is a network filesystem that supports the SMB protocol, used by Windows for Workgroups, Windows
                 NT, and Lan Manager.

                 To  use  smb  fs,  you  need a special mount program, which can be found in the ksmbfs package,
                 found at ⟨ftp://sunsite.unc.edu/pub/Linux/system/Filesystems/smbfs⟩.

       ncpfs     is a network filesystem that supports the NCP protocol, used by Novell NetWare.

                 To use ncpfs, you need special programs,  which  can  be  found  at  ⟨ftp://linux01.gwdg.de/pub
                 /ncpfs⟩.

SEE ALSO

       proc(5), fsck(8), mkfs(8), mount(8)

COLOPHON

       This  page  is  part  of  release 3.54 of the Linux man-pages project.  A description of the project, and
       information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.