[Samba] Disabling Oplocks and SMB2

Volker Lendecke Volker.Lendecke at SerNet.DE
Wed Apr 29 06:19:21 MDT 2015

On Tue, Apr 28, 2015 at 04:48:09PM -0400, Scott Sipe wrote:
> Hello,
> We are running some legacy software that instructs us to, via Windows registry settings, disable all oplocks and SMB2 entirely on each Windows workstation that connects to the Samba share where the software is hosted. The software maintainers give dire warners of corruption, etc., if oplocks (and SMB2) are left enabled.
> We’ve run this software off of a Samba share for 20 years and have not had any data corruption problems. I disable oplocks (and now SMB2) both on the workstation and through the smb.conf "oplocks = No” and "level2 oplocks = No” settings.

Disabling SMB2 would be 

max protocol = NT1


server max protocol = NT1

depending on your Samba version. Level2 oplocks are disabled
already by the oplocks=no setting.

> My question—do I really need to turn off smb2 and oplocks on the workstation if I’ve already disabled them on the Samba share?



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