[Samba] Samba drops connection on "large" files 2GB+

[Leon Benthaus]

Thank you! Nothing is jumping into my eye from the logs. The SMB Server just drops
the network connection. Also I don't see a memory issue. I have 16GB of Ram 6GB in use
while copying. The oplocks option unfortunately did not work. This is so strange...

Kind regards,
Leon

> Rodrigo Cunha <rodrigo.root.rj at gmail.com> hat am 08.03.2023 21:26 CET geschrieben:
>  
>  
> Hi, Jeremy. I saw that in the samba servers. This smells like a known problem, with 'out of memory'. Check the log.
> Run journalctl -f and try again.
> Sometimes, this problem Is solved with the setup:
> [global]
> oplocks = no
>  
> How much memory do you have?
> 
> 
> 
> On Wed, Mar 8, 2023 at 2:40 PM Jeremy Allison via samba <samba at lists.samba.org mailto:samba at lists.samba.org> wrote:
> 
> > On Wed, Mar 08, 2023 at 08:54:24AM +0100, Leon Benthaus via samba wrote:
> > >Dear all,
> > >
> > >I still have CentOS7 running with the latest Samba Version available
> > >for it (samba-4.10.16-20.el7)
> > >I'm experiencing a really strange issue. When I copy a file larger
> > >than 2GB I  always get a network
> > >drop. It just stops at around 1,74gb. The logs didn't show something
> > >in default logging level and
> > >are overwhelming at 5. An interesting detail is: If I pause the copy
> > >process every other second
> > >I can get the whole file copied. If I let it run at full speed it is
> > >not working. Any idea? I already
> > >played around with socket options and stuff. No change. The shares is
> > >located on a xfs formatted drive.
> > 
> > Might be:
> > 
> > https://bugzilla.samba.org/show_bug.cgi?id=15261
> > 
> > Contains a patch you might try.
> > 
> > --
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> 
>  
> --
> Atenciosamente,
> Rodrigo da Silva Cunha
> São Gonçalo, RJ - Brasil
>  
>