[Samba] Rename to open file doesn't work, why?

[Wilhelm Meier]

Am Montag, 28. Juli 2008 schrieb Jeremy Allison:
> On Mon, Jul 28, 2008 at 07:02:52AM +0200, Wilhelm Meier wrote:
> > Am Montag, 28. Juli 2008 schrieb Michael Heydon:
> > > Wilhelm Meier wrote:
> > > > <snip>
> > > > On a local linux filesystem like ext2/3 one can rename a file
> > > > to an existing, already open file.
> > > >
> > > > But this doesn't  work on a cifs-mounted samba-share
> > > > <snip>
> > >
> > > The reason this works with ext2 is that as long as you hold an
> > > open file descriptor a deleted file is still accessible (rename
> > > is essentially a delete and then a move).
> > >
> > > While it might be theoretically possible for this to work unix
> > > to unix, Windows doesn't deal with deleted files the same way
> > > (it prevents you from deleting files as long as they are open),
> > > and so it's quite possible that SMB/CIFS doesn't understand the
> > > concept of having a deleted file open.
> >
> > Yes, with a windows file server this is impossible.
> >
> > But I thought the samba unix extensions should make that
> > possible.
> >
> > Otherwise samba/cifs is unusable as e.g. user-homes, since KDE
> > tends to use this pattern.
> >
> > Is there any workaround at the moment?
>
> Can you log a bug with bugzilla.samba.org so I can
> track this. Include everything I need to reproduce
> (test code preferably) so I can ensure the UNIX
> extensions allow this.

I tried some other versions of samba (triggered to the fact, that 
debian lenny now has feature freeze ...). I found that the problem 
vanished from Samba 3.0.28 on for the testprogram I posted earlier.

I had not enough time to test the newer samba versions as user-homes 
with KDE, but I'll do that soon.

>
> Thanks !
>
> Jeremy.



-- 
Wilhelm