[frameworks-kio] [Bug 326880] Dolphin is unable to utilize CoW feature of btrfs

[Méven Car]

https://bugs.kde.org/show_bug.cgi?id=326880

Méven Car  changed:

   What|Removed |Added

  Latest Commit||https://invent.kde.org/fram
   ||eworks/kio/commit/c2faaae69
   ||7f11ee600989b67b4406981838a
   ||e628
 Status|ASSIGNED|RESOLVED
 Resolution|--- |FIXED
   Version Fixed In||5.72

--- Comment #13 from Méven Car  ---
Git commit c2faaae697f11ee600989b67b4406981838ae628 by Méven Car.
Committed on 20/06/2020 at 07:18.
Pushed by dfaure into branch 'master'.

File ioslave: Add support for reflink copying
FIXED-IN: 5.72

M  +86   -70   src/ioslaves/file/file_unix.cpp

https://invent.kde.org/frameworks/kio/commit/c2faaae697f11ee600989b67b4406981838ae628

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[frameworks-kio] [Bug 326880] Dolphin is unable to utilize CoW feature of btrfs

[Bug Janitor Service]

https://bugs.kde.org/show_bug.cgi?id=326880

Bug Janitor Service  changed:

   What|Removed |Added

 Status|CONFIRMED   |ASSIGNED

--- Comment #12 from Bug Janitor Service  ---
A possibly relevant merge request was started @
https://invent.kde.org/frameworks/kio/-/merge_requests/53

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[frameworks-kio] [Bug 326880] Dolphin is unable to utilize CoW feature of btrfs

[Méven Car]

https://bugs.kde.org/show_bug.cgi?id=326880

Méven Car  changed:

   What|Removed |Added

 CC||meve...@gmail.com

--- Comment #11 from Méven Car  ---
From
https://github.com/coreutils/coreutils/blob/439741053256618eb651e6d43919df29625b8714/src/copy.c#L334
:

/* Perform the O(1) btrfs clone operation, if possible.
   Upon success, return 0.  Otherwise, return -1 and set errno.  */
static inline int
clone_file (int dest_fd, int src_fd)
{
#ifdef FICLONE
  return ioctl (dest_fd, FICLONE, src_fd);
#else
  (void) dest_fd;
  (void) src_fd;
  errno = ENOTSUP;
  return -1;
#endif
}

Relevant ref: https://man7.org/linux/man-pages/man2/ioctl_ficlonerange.2.html

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[frameworks-kio] [Bug 326880] Dolphin is unable to utilize CoW feature of btrfs

[Niklas Sombert]

https://bugs.kde.org/show_bug.cgi?id=326880

Niklas Sombert  changed:

   What|Removed |Added

 CC||nik...@ytvwld.de

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[frameworks-kio] [Bug 326880] Dolphin is unable to utilize CoW feature of btrfs

[Maximilian Böhm]

https://bugs.kde.org/show_bug.cgi?id=326880

Maximilian Böhm  changed:

   What|Removed |Added

 CC||m...@elbmurf.de

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[frameworks-kio] [Bug 326880] Dolphin is unable to utilize CoW feature of btrfs

[Johannes Pfrang]

https://bugs.kde.org/show_bug.cgi?id=326880

Johannes Pfrang  changed:

   What|Removed |Added

 CC||johannespfrang+...@gmail.co
   ||m

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[frameworks-kio] [Bug 326880] Dolphin is unable to utilize CoW feature of btrfs

[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=326880

mp107+bugs.kde@o2.pl changed:

   What|Removed |Added

 CC||mp107+bugs.kde@o2.pl

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[frameworks-kio] [Bug 326880] Dolphin is unable to utilize CoW feature of btrfs

[Stefan Brüns]

https://bugs.kde.org/show_bug.cgi?id=326880

--- Comment #10 from Stefan Brüns  ---
I think one should read the implementation of the "cp" command, which supports
this using the "--reflink" option.

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[frameworks-kio] [Bug 326880] Dolphin is unable to utilize CoW feature of btrfs

[Nate Graham]

https://bugs.kde.org/show_bug.cgi?id=326880

Nate Graham  changed:

   What|Removed |Added

Version|4.11.2  |unspecified
Product|kio |frameworks-kio
 CC||kdelibs-b...@kde.org,
   ||n...@kde.org
  Component|file|general

--- Comment #9 from Nate Graham  ---
Is anyone who's subscribed to this bug familiar with the kind of changes that
would necessary to implement this feature?

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[kio] [Bug 326880] Dolphin is unable to utilize CoW feature of btrfs

[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=326880

g...@gabeappleton.me changed:

   What|Removed |Added

 Status|UNCONFIRMED |CONFIRMED
 Ever confirmed|0   |1

--- Comment #8 from g...@gabeappleton.me ---
*** This bug has been confirmed by popular vote. ***

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[kio] [Bug 326880] Dolphin is unable to utilize CoW feature of btrfs

[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=326880

g...@gabeappleton.me changed:

   What|Removed |Added

 CC||g...@gabeappleton.me

--- Comment #7 from g...@gabeappleton.me ---
I'd like to also voice support for this. It seems like a relatively minor thing
to do that would have a very large impact on performance for my systems.

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[kio] [Bug 326880] Dolphin is unable to utilize CoW feature of btrfs

[Mariusz Libera via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=326880

Mariusz Libera  changed:

   What|Removed |Added

 CC||mariusz.lib...@gmail.com

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[kio] [Bug 326880] Dolphin is unable to utilize CoW feature of btrfs

[Edward O'Callaghan via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=326880

--- Comment #6 from Edward O'Callaghan  ---
kio could additionally support BTRFS's snapshot facilities too. aka. Apple^tm
Timemachine^{H. G. Wells} (sorry Jobs..)

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