[Samba] Re: OpLock+flat DB corruption (Was: How Samba let us down)

Chris de Vidal cdevidal at yahoo.com
Mon Oct 28 21:53:01 GMT 2002

--- jra at dp.samba.org wrote:
> On Thu, Oct 24, 2002 at 04:43:53AM -0700, Chris de
> Vidal wrote:
> > OpLocks were indeed causing corruption; we only
> turned
> > them off, made no other changes, and have no more
> > corruption, as I reported yesterday.  Wouldn't
> that be
> > a priority 1, "drop everything" bug?  Other
> experience
> > was confirmed by doing a Google, by 2 Samba
> authors,
> > and by the results of our one simple change.
> > 
> > If you'd like, I can submit an official bug
> report.
> Is it completely reproducible ? Problems cuased by
> clients
> not responding to oplock breaks are notoriously
> dependent
> on network hardware and client issues (network
> drivers etc).

Sorry for the late reply; I was out all weekend.

We can't reproduce the problem because we don't have
another Oce' and Opus setup ($$) to test it on, but in
No corruption on Netware, no oplocks.
Corruption on Samba with oplocks.
No corruption on Samba, no oplocks.

Yes, turning off all oplocks was the only change made.

2 Samba authors and a Google search confirmed this
kind of corruption.

> We drive the client differently than a Windows TCP
> stack,
> and remember Microsoft don't test with anything than
> their own stack.
> Problems like this come under the "oplock break"
> problems, not generic corruption.

Still, it's corruption, and the user ought to be made
aware.  I would like (at least) to submit a
documentation patch.  It might have saved us grief.


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