「NTFS」の版間の差分

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[[Category:ファイルシステム]]
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#REDIRECT [[NTFS-3G]]
  
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[[en:NTFS]]
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[[ru:NTFS]]
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[[zh-hans:NTFS]]
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{{Related articles start}}
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{{Related|ファイルシステム}}
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{{Related|NTFS-3G}}
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{{Related articles end}}
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From [[Wikipedia:NTFS|Wikipedia]]:
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:'''NTFS (New Technology File System)''' is a proprietary journaling file system developed by Microsoft. Starting with Windows NT 3.1, it is the default file system of the Windows NT family.
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Since Linux 5.15, [https://www.kernel.org/doc/html/latest/filesystems/ntfs3.html ntfs3] provides read and write support for the file system. All [[カーネル#公式サポートカーネル|公式サポートカーネル]] with versions 5.15 or newer are built with {{ic|1=CONFIG_NTFS3_FS=m}} and thus support it.
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For kernels < 5.15, NTFS read and write support is provided by the [[NTFS-3G]] FUSE file system. Or you can use backported NTFS3 via {{AUR|ntfs3-dkms}}.
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{{Note|Paragon has not yet released userspace utilities for NTFS3.}}
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== Tips and tricks ==
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=== Improving performance ===
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You can enable some {{man|8|mount}} options to improve the performance:
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* {{ic|noatime}} – can speed up the file system operations.
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* {{ic|prealloc}} – decreases fragmentation in case of parallel write operations (most useful for HDD).
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== Known issues ==
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=== Explicit file system type required to mount ===
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{{ic|ntfs3}} requires explicit file system type to mount.
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To be able to mount the file system, specify its type as {{ic|ntfs3}}. For example, using {{man|8|mount}}'s {{ic|-t}}/{{ic|--types}} option:
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# mount -t ntfs3 /dev/''sdxY'' ''/mnt''
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== Troubleshooting ==
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=== unknown filesystem type 'ntfs' ===
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When [[mounting]] NTFS, you can encounter an error such as:
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mount: ''/mnt'': unknown filesystem type 'ntfs'
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See [[#Explicit file system type required to mount]].
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If you want to use {{ic|ntfs3}} as the default driver for {{ic|ntfs}} partitions, such [[udev]] rule does the trick:
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{{hc|/etc/udev/rules.d/ntfs3_by_default.rules|2=SUBSYSTEM=="block", ENV{ID_FS_TYPE}=="ntfs", ENV{ID_FS_TYPE}="ntfs3"}}
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Although, this method is not recommended and can confuse some 3rd party tools.
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=== udisks support ===
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[[udisks]] supports NTFS3, but has some issues at the moment. See udisks [https://github.com/storaged-project/udisks/pull/917 ntfs3 PR] and [https://github.com/storaged-project/udisks/issues/932 issue 932].
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As a workaround, add a such option to {{ic|/etc/udisks2/mount_options.conf}} in {{ic|[defaults]}} section:
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ntfs_defaults=uid=$UID,gid=$GID,noatime,prealloc
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=== ntfs3: Unknown parameter 'windows_names' ===
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See [[#udisks support]].
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== See also ==
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* [https://www.kernel.org/doc/html/latest/filesystems/ntfs3.html NTFS3 kernel documentation]
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* [https://www.paragon-software.com/home/ntfs3-driver-faq/ NTFS3 Driver FAQ] – Paragon Software Group
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* [https://openbenchmarking.org/result/2009092-NE-NTFSCOMPA56 NTFS3 performance comparison]

2022年3月4日 (金) 14:05時点における版

関連記事

From Wikipedia:

NTFS (New Technology File System) is a proprietary journaling file system developed by Microsoft. Starting with Windows NT 3.1, it is the default file system of the Windows NT family.

Since Linux 5.15, ntfs3 provides read and write support for the file system. All 公式サポートカーネル with versions 5.15 or newer are built with CONFIG_NTFS3_FS=m and thus support it.

For kernels < 5.15, NTFS read and write support is provided by the NTFS-3G FUSE file system. Or you can use backported NTFS3 via ntfs3-dkmsAUR.

ノート: Paragon has not yet released userspace utilities for NTFS3.

Tips and tricks

Improving performance

You can enable some mount(8) options to improve the performance:

  • noatime – can speed up the file system operations.
  • prealloc – decreases fragmentation in case of parallel write operations (most useful for HDD).

Known issues

Explicit file system type required to mount

ntfs3 requires explicit file system type to mount.

To be able to mount the file system, specify its type as ntfs3. For example, using mount(8)'s -t/--types option: 

# mount -t ntfs3 /dev/sdxY /mnt

Troubleshooting

unknown filesystem type 'ntfs'

When mounting NTFS, you can encounter an error such as: 

mount: /mnt: unknown filesystem type 'ntfs'

See #Explicit file system type required to mount.

If you want to use ntfs3 as the default driver for ntfs partitions, such udev rule does the trick: 

/etc/udev/rules.d/ntfs3_by_default.rules
SUBSYSTEM=="block", ENV{ID_FS_TYPE}=="ntfs", ENV{ID_FS_TYPE}="ntfs3"

Although, this method is not recommended and can confuse some 3rd party tools.

udisks support

udisks supports NTFS3, but has some issues at the moment. See udisks ntfs3 PR and issue 932.

As a workaround, add a such option to /etc/udisks2/mount_options.conf in [defaults] section: 

ntfs_defaults=uid=$UID,gid=$GID,noatime,prealloc

ntfs3: Unknown parameter 'windows_names'

See #udisks support.

See also

「https://wiki.archlinux.jp/index.php?title=NTFS&oldid=24292」から取得