[Bug 14914] files are created as sparse files when they shouldn't

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=14914


Alexandre Julliard <julliard at winehq.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|CLOSED                      |UNCONFIRMED
         Resolution|INVALID                     |




--- Comment #18 from Alexandre Julliard <julliard at winehq.org>  2008-08-21 11:57:19 ---
(In reply to comment #17)
> (In reply to comment #15)
> > @Dmitry
> > 
> > Did you once read any of my comments? I know that Wine just passes the file io
> > requests to the kernel. That is the very problem and you named it as well.
> > Linux kernel has different io semantics than Windows, at least concerning
> > sparse files.
> 
> Which makes this a kernel/fs bug, not a Wine bug.

Well, no, there's no reason that Wine couldn't force Windows semantics on top
of a unix fs, so in that sense it is a difference in behavior that Wine could
be hiding. Filling the file with 0 would be fairly inefficient so we certainly
don't want to do that, but on some modern file systems it is possible to
control block allocation and that could potentially be supported. I'm quite
skeptical that the difference would matter in practice.


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