Recently stumbled over a post recommending the addition of the following lines to the smb-extra-conf file.  The claim is that it reduces the likelihood of "buffering" when streaming to a media player.

 

kernel oplocks = No

oplocks = No

 

I'm just wondering WHAT these commands do?  Any negative effects on system safety that I should be concerned with?

 

 

Never heard of it until you posted, but this seems reasonable:

http://www.smallnetbuilder.com/nas/nas-features/30039-nas-tutorial-oplocks-and-nases

 

 

and more

http://www.samba.org/samba/docs/man/Samba-HOWTO-Collection/locking.html

 

that explains those strange files you get if a nfs copy/move/delete is interrupted

Local UNIX and NFS clients access files without a mandatory file-locking mechanism. Thus, these client platforms are incapable of initiating an oplock break request from the server to a Windows client that has a file cached. Local UNIX or NFS file access can therefore write to a file that has been cached by a Windows client, which exposes the file to likely data corruption.

 

If files are shared between Windows clients and either local UNIX or NFS users, turn oplocks off.

For now this is the only option that really works for me it the buffering problems issues with XBMC on AppleTV2...

 

This is only with AppleTV2 client, it others i dont have this problems.

 

Two days tested and i think it is ok too it unraid samba shares...