Mailinglist Archive: opensuse-es (1490 mails)

["Carlos E. R." <robin1.listas@xxxxxxxxxx>]

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El 2005-11-03 a las 19:01 +0100, Camaleón escribió:

> Respuesta corta: no. Respuesta larga: es arriesgado. No hay soporte
> nativo en Linux para sistemas de archivos NTFS (existe un controlador
> en desarrollo pero no es del todo fiable).

Eso ha cambiado un poco recientemente, lo descubrí el otro dia al compilar 
el kernel. El 9.3 permite escribir por defecto (me sorprendió mucho 
verlo), pero sólo sobreescribir. No puedes crear ficheros nuevos, ni 
renombrarlos, ni cambiarles el tamaño.

/usr/src/linux/Documentation/filesystems/ntfs.txt:


Overview
========
....

To mount an NTFS 1.2/3.x (Windows NT4/2000/XP/2003) volume, use the file
system type 'ntfs'.  The driver currently supports read-only mode (with no
fault-tolerance, encryption or journalling) and very limited, but safe, write
support.

...


Features
========

- - This is a complete rewrite of the NTFS driver that used to be in the kernel.
  This new driver implements NTFS read support and is functionally equivalent
  to the old ntfs driver.
- - The new driver has full support for sparse files on NTFS 3.x volumes which
  the old driver isn't happy with.
- - The new driver supports execution of binaries due to mmap() now being
  supported.
- - The new driver supports loopback mounting of files on NTFS which is used by
  some Linux distributions to enable the user to run Linux from an NTFS
  partition by creating a large file while in Windows and then loopback
  mounting the file while in Linux and creating a Linux filesystem on it that
  is used to install Linux on it.
- - A comparison of the two drivers using:
        time find . -type f -exec md5sum "{}" \;
  run three times in sequence with each driver (after a reboot) on a 1.4GiB
  NTFS partition, showed the new driver to be 20% faster in total time elapsed
  (from 9:43 minutes on average down to 7:53).  The time spent in user space
  was unchanged but the time spent in the kernel was decreased by a factor of
  2.5 (from 85 CPU seconds down to 33).
- - The driver does not support short file names in general.  For backwards
  compatibility, we implement access to files using their short file names if
  they exist.  The driver will not create short file names however, and a
  rename will discard any existing short file name.
- - The new driver supports exporting of mounted NTFS volumes via NFS.
- - The new driver supports async io (aio).
- - The new driver supports fsync(2), fdatasync(2), and msync(2).
- - The new driver supports readv(2) and writev(2).
- - The new driver supports access time updates (including mtime and ctime).


- -- 
Saludos
       Carlos Robinson
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