[Samba] Re: SAMBA & ISAM Databases

Andrew Bartlett abartlet at samba.org
Tue Sep 14 22:57:21 GMT 2004

On Tue, 2004-09-14 at 18:23, Pepe Guimarães wrote:
>  I have a heterogeneous network with a R.H. Linux server running Samba
> 3.0.5 and various
> Win clients (from Win 98 to Win XP Pro). On a Samba share I have an ISAM
> database (Access, FoxPro etc. like)
> that is being accessed by applications running on the Win clients and by
> applications running in Linux.
> I have disabled "opplocks" in both Win9x clients and on the Samba share.
> I have "mounted" the Samba share on the Linux server so that Linux
> applications are "pathed"
> to the share and accessing the data there.
> The problem arises with locks. Files locked by the Win clients are
> seeing as locked by Win 
> clients but not by Linux and viceversa.

> Finally:
>  shouldn't "posix locking = yes" in smb.conf give consistent locking
> between SMB and posix (NFS or local) access? 

Yes and no.  'posix locking = yes' will allow *some* coordination
between windows and POSIX locks, but it is far from a complete mapping. 
I presume your linux-side applications are running under wine? 
Unfortunately, wine does not yet work with Samba (and Samba does not yet
work with wine) to jointly manage the windows locks, which are much
richer than can be expressed under posix.

Worse still, smbfs does not support locking at all, and NFS is
notoriously poor at locking.

Andrew Bartlett
Andrew Bartlett                                 abartlet at samba.org
Authentication Developer, Samba Team            http://samba.org
Student Network Administrator, Hawker College   abartlet at hawkerc.net
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