[Samba] Corrupted Files - Samba 4.4.x

[Jeremy Allison]

On Mon, Sep 19, 2016 at 03:36:48PM -0300, Edson Tadeu Almeida da Silveira via samba wrote:
> Hi guys.
> 
> I´m experiencing some problems with corrupted files with samba 4.x.
> 
> I´m using samba 4.4.4 and some files like excell, word, libreoffice are
> getting corrupted.
> 
> The only thing that i saw at log files is this:
> 
> [2016/09/19 13:54:00.312578,  0]
> ../source3/rpc_server/svcctl/srv_svcctl_nt.c:326(_svcctl_OpenServiceW)
> [2016/09/19 14:06:02.591121,  0]
> ../source3/smbd/oplock.c:701(oplock_timeout_handler)
>   *Oplock break failed for file papeldeparede.jpg -- replying anyway*
> [2016/09/19 15:03:03.891095,  0]
> ../source3/smbd/oplock.c:134(downgrade_file_oplock)
>   trying to downgrade an already-downgraded oplock!
> [2016/09/19 15:03:33.908275,  0]
> ../source3/smbd/oplock.c:701(oplock_timeout_handler)
>   *Oplock break failed for file Rede 2016/Livros/Of¡cios CMDGER 2016.docx*
> -- replying anyway

Almost certainly you have a bad network. Fix that
and the problems should go away.