Installing exchange 2010 with samba DCs

Matthieu Patou mat at
Sun May 20 13:43:54 MDT 2012

On 05/20/2012 06:36 AM, Matthias Dieter Wallnöfer wrote:
> ekacnet,
> this is a very impressive work. The "schema_reload_interval" loadparm 
> parameter seems to make sense to me but please consult other LDB devs 
> as well. It would always be nice to have such options compatible to 
> Windows but I do not know how is it handled in this particular case (I 
> think that it could be problematic when we have more than one DC and 
> different intervals on the various nodes).
Well on the tests it appears that Windows is reloading every 150 
seconds, the reloading of the schema is really meaningful on the schema 
master as other DCs reloads automatically the schema during DRS replication.

But my request was for the latest patch the one that change the behavior 
of the operational module and especially how modifyTimestamp is handled.
In my trial to make exchange 2010 install on top of a S4 DC it was 
failing with some strange error. Research on internet yielded tips about 
clock synchronization influencing the timestamp of the schema's cache 
that the "exchange" server is maintaining. After checking the windows 
behavior I came to the conclusion that the modifyTimestamp on the 
CN=Aggregate object reflects the timestamp of the most recently modified 
object in the schema, hence my patch.

Can you check this particular one ?



> Thanks,
> Matthias
> Matthieu Patou schrieb:
>> Matthias,
>> Can you have a link on this fix 002ea80 in my repository listed below ?
>> Thanks.
>> Matthieu.
>> On 05/18/2012 10:16 AM, Matthieu Patou wrote:
>>> Hello,
>>> Last 3/4 weeks I made a lot of changes in samba so that the 
>>> installation of Exchange 2010 could be possible with samba 4 DCs.
>>> The final result is really positive as I'm able to install exchange 
>>> in less than 30 minutes when running samba on my laptop and a 
>>> windows 2008R2 server with exchange installation in virtualbox.
>>> The patch set to do so is here:
>>> I still have to review it but I think it gives an idea of the change 
>>> I had to do. The bad news is that it seems that exchange didn't run 
>>> very smoothly when installed with samba (for the moment).
>>> I don't have plans to work on this and maybe not in the next months 
>>> or so, still I'm wondering if there is people who could be 
>>> interested to run this kind of setup (samba 4 DCs + exchange on 
>>> windows server).
>>> The positive side effect of the work on the schema is a huge speedup 
>>> when schema are modified and also much more reliability in the 
>>> schema updates.
>>> Matthieu.

Matthieu Patou
Samba Team

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