[Samba] What affects file locking?

[John Drescher]

On Thu, Aug 7, 2008 at 9:16 PM, Doug Germann <76066.515 at compuserve.com> wrote:
> Hi--
>
> We are in a production environment with one WinXP box and several linux boxes.
>
> We have discovered that the WinXP and linux boxes seem to respect each other's
> file locks, but that the linux boxes do not respect each other's locks. In other
> words, box 1 can have a file open, and at the same time box 2 can open it and
> edit and save the file.
>
> We have smb.conf set with level2 oplocks yes, kernel oplocks no, and oplocks no.
> When we first noticed the problem the last two were set to yes. The change has
> made the locks work sometimes, but not reliably.
>
> Are there other things besides the oplocks and the smb.conf file which can
> affect file locking? How would you trouble shoot this?
>

Are the linux machines sharing the file using samba and mounting the
share using cifs?

John