blob: 2b86a9b3a6de30477cfb79a2fa9101d5faf38523 [file] [log] [blame]
.. SPDX-License-Identifier: GPL-2.0
Summary and Features
NTFS3 is fully functional NTFS Read-Write driver. The driver works with NTFS
versions up to 3.1. File system type to use on mount is *ntfs3*.
- This driver implements NTFS read/write support for normal, sparse and
compressed files.
- Supports native journal replaying.
- Supports NFS export of mounted NTFS volumes.
- Supports extended attributes. Predefined extended attributes:
- *system.ntfs_security* gets/sets security
- *system.ntfs_attrib* gets/sets ntfs file/dir attributes.
Note: Applied to empty files, this allows to switch type between
sparse(0x200), compressed(0x800) and normal.
- *system.ntfs_attrib_be* gets/sets ntfs file/dir attributes.
Same value as system.ntfs_attrib but always represent as big-endian
(endianness of system.ntfs_attrib is the same as of the CPU).
Mount Options
The list below describes mount options supported by NTFS3 driver in addition to
generic ones. You can use every mount option with **no** option. If it is in
this table marked with no it means default is without **no**.
.. flat-table::
:widths: 1 5
* - iocharset=name
- This option informs the driver how to interpret path strings and
translate them to Unicode and back. If this option is not set, the
default codepage will be used (CONFIG_NLS_DEFAULT).
Example: iocharset=utf8
* - uid=
- :rspan:`1`
* - gid=
* - umask=
- Controls the default permissions for files/directories created after
the NTFS volume is mounted.
* - dmask=
- :rspan:`1` Instead of specifying umask which applies both to files and
directories, fmask applies only to files and dmask only to directories.
* - fmask=
* - nohidden
- Files with the Windows-specific HIDDEN (FILE_ATTRIBUTE_HIDDEN) attribute
will not be shown under Linux.
* - sys_immutable
- Files with the Windows-specific SYSTEM (FILE_ATTRIBUTE_SYSTEM) attribute
will be marked as system immutable files.
* - hide_dot_files
- Updates the Windows-specific HIDDEN (FILE_ATTRIBUTE_HIDDEN) attribute
when creating and moving or renaming files. Files whose names start
with a dot will have the HIDDEN attribute set and files whose names
do not start with a dot will have it unset.
* - windows_names
- Prevents the creation of files and directories with a name not allowed
by Windows, either because it contains some not allowed character (which
are the characters " * / : < > ? \\ | and those whose code is less than
0x20), because the name (with or without extension) is a reserved file
name (CON, AUX, NUL, PRN, LPT1-9, COM1-9) or because the last character
is a space or a dot. Existing such files can still be read and renamed.
* - discard
- Enable support of the TRIM command for improved performance on delete
operations, which is recommended for use with the solid-state drives
* - force
- Forces the driver to mount partitions even if volume is marked dirty.
Not recommended for use.
* - sparse
- Create new files as sparse.
* - showmeta
- Use this parameter to show all meta-files (System Files) on a mounted
NTFS partition. By default, all meta-files are hidden.
* - prealloc
- Preallocate space for files excessively when file size is increasing on
writes. Decreases fragmentation in case of parallel write operations to
different files.
* - acl
- Support POSIX ACLs (Access Control Lists). Effective if supported by
Kernel. Not to be confused with NTFS ACLs. The option specified as acl
enables support for POSIX ACLs.
Todo list
- Full journaling support over JBD. Currently journal replaying is supported
which is not necessarily as effective as JBD would be.
- Commercial version of the NTFS driver for Linux.
- Direct e-mail address for feedback and requests on the NTFS3 implementation.