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