support.
For fault tolerance and raid support (i.e. volume and stripe sets), you can
-use the kernel's Software RAID / MD driver. See section "Using Software RAID
+use the kernel's Software RAID / MD driver. See section "Using Software RAID
with NTFS" for details.
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
+ (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
+- 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.
+ 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).
Supported mount options
Note, a technical ChangeLog aimed at kernel hackers is in fs/ntfs/ChangeLog.
+2.1.20:
+ - Fix two stupid bugs introduced in 2.1.18 release.
+2.1.19:
+ - Minor bugfix in handling of the default upcase table.
+ - Many internal cleanups and improvements. Many thanks to Linus
+ Torvalds and Al Viro for the help and advice with the sparse
+ annotations and cleanups.
+2.1.18:
+ - Fix scheduling latencies at mount time. (Ingo Molnar)
+ - Fix endianness bug in a little traversed portion of the attribute
+ lookup code.
+2.1.17:
+ - Fix bugs in mount time error code paths.
+2.1.16:
+ - Implement access time updates (including mtime and ctime).
+ - Implement fsync(2), fdatasync(2), and msync(2) system calls.
+ - Enable the readv(2) and writev(2) system calls.
+ - Enable access via the asynchronous io (aio) API by adding support for
+ the aio_read(3) and aio_write(3) functions.
+2.1.15:
+ - Invalidate quotas when (re)mounting read-write.
+ NOTE: This now only leave user space journalling on the side. (See
+ note for version 2.1.13, below.)
+2.1.14:
+ - Fix an NFSd caused deadlock reported by several users.
+2.1.13:
+ - Implement writing of inodes (access time updates are not implemented
+ yet so mounting with -o noatime,nodiratime is enforced).
+ - Enable writing out of resident files so you can now overwrite any
+ uncompressed, unencrypted, nonsparse file as long as you do not
+ change the file size.
+ - Add housekeeping of ntfs system files so that ntfsfix no longer needs
+ to be run after writing to an NTFS volume.
+ NOTE: This still leaves quota tracking and user space journalling on
+ the side but they should not cause data corruption. In the worst
+ case the charged quotas will be out of date ($Quota) and some
+ userspace applications might get confused due to the out of date
+ userspace journal ($UsnJrnl).
+2.1.12:
+ - Fix the second fix to the decompression engine from the 2.1.9 release
+ and some further internals cleanups.
+2.1.11:
+ - Driver internal cleanups.
+2.1.10:
+ - Force read-only (re)mounting of volumes with unsupported volume
+ flags and various cleanups.
+2.1.9:
+ - Fix two bugs in handling of corner cases in the decompression engine.
2.1.8:
- Read the $MFT mirror and compare it to the $MFT and if the two do not
match, force a read-only mount and do not allow read-write remounts.
git://git.onelab.eu / linux-2.6.git / blobdiff