Re: [Samba] Samba and Foxpro for Unix

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On Thu, 2006-03-16 at 17:40 -0500, Carlos Prieto wrote:
> Hi !
>=20
> I have an unique situation.
>=20
> An SCO Unixware 7.1.3 with Samba 2.2.7a (yes, i know; it sucks !)
>=20
> On the machine, is running MS Foxpro 2.6 for UNIX (it's running pretty we=
ll
> for several years) but due to new demands (like Crystal Reports, Visual
> view; etc) the directories with DBF files were shared using Samba. At the
> beginning, when everything was only about reading, there were no problems=
..
> But now, it's necessary to write to the DBF files from the Visual
> Application (Visual Basic) and now there are some problems. While a user =
may
> be reading data from the Visual application, and someone else writes to t=
he
> DBF file from the FoxPro for UNIX, the changes are not being seeing in th=
e
> Visual application. And if the user from Visual writes data to the DBF,
> there's a data corruption then; because of the concurrent connections fro=
m
> the FoxPro from Unix.
>=20
> I think it's a matter of oplock issue between Fox and Samba. Samba opens =
the
> DBF file, without concerns if FoxPro has the file open, and viceversa. Wh=
en
> everyone is running only the Visual application, there's no problem. If t=
he
> users are running only FoxPro for Unix, there's no problems. If the users
> run FoxPro for Unix for read/write and Visual for read only, there's no
> problem.
>=20
> The problems araise when the users are running FoxPro and Visual for read
> and write files simultaneosly.
>=20
> Any idea to run this configuration smoothly?

I would start by setting (I think) 'strict locking =3D yes', and disable
oplocks for this file extension.

I would also strongly suggest migration off SCO, to a platform
compatible with current Samba 3.0.

Andrew Bartlett

--=20
Andrew Bartlett http://samba.org/~abartlet/
Authentication Developer, Samba Team http://samba.org
Student Network Administrator, Hawker College http://hawkerc.net

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