samba - Mar 2019 - Samba 4 File Locking

I have an old application that would kick up a warning
"File is open - do you want to open in read only mode"
on my previous Samba3 NT style domain set up.

It's also accessing the file share thru a connection
coming thru an VM setup.

On my Samba 4 AD setup, I'm not getting the initial
read only message.  file locking seems to be different.
It seems like two concurrent users can edit the file
and then run into locking issues when they try to dave.

Is this a SMB thing, a samba thing or a windows thing?
Is there a setting that can effect the behavior?

Thanks.

On Sat, Mar 02, 2019 at 07:33:06AM -0500, Marco Shmerykowsky via samba
wrote:
> I have an old application that would kick up a warning
> "File is open - do you want to open in read only mode"
> on my previous Samba3 NT style domain set up.
> 
> It's also accessing the file share thru a connection
> coming thru an VM setup.
> 
> On my Samba 4 AD setup, I'm not getting the initial
> read only message.  file locking seems to be different.
> It seems like two concurrent users can edit the file
> and then run into locking issues when they try to dave.
> 
> Is this a SMB thing, a samba thing or a windows thing?
> Is there a setting that can effect the behavior?
> 
> Thanks.
Which SMB implementation do you use? s3fs or ntvfs? Can you post your
smb.conf?

Thanks, Volker

-- 
SerNet GmbH, Bahnhofsallee 1b, 37081 Göttingen
phone: 0551-370000-0, mailto:kontakt at sernet.de
Gesch.F.: Dr. Johannes Loxen und Reinhild Jung
AG Göttingen: HR-B 2816 - http://www.sernet.de