[Samba] commiting SAM database

mj lists at merit.unu.edu
Thu Feb 6 08:52:46 UTC 2020

Hi Stefan,

So, you stopped migration already, but in this case, would a join with 
--domain-critical-only not have helped out?

And after a successful join, later initiate a full replication..?


On 2/6/20 9:13 AM, Stefan Kania via samba wrote:
> We stopped the migration, because we had to many problems. For your
> information:
> The windows-domain was set up in 2002 with windows 2000 and was raised
> up to windows 2012 over the years. The domain is responsible for the
> login of all 20.000 students. So over the years they have over 170.000
> Objects. For the migration we used the 4.11 sernet-packages. We started
> with 32GB of RAM and noticed that this was not enough. We raised the RAM
> to 128GB. After reading all objects the system needed 28GB RAM but then
> the "commiting SAM database" process started and the RAM usage increases
> up to 68GB. Because we have to get the new domain running we stopped the
> migration after 28 hours. Because the original domain is getting all
> objects via an openLDAP (hiphiphuraaaa) we started with a new domain (I
> think it's the best way after 18 years) and now we are pushing all
> objects into the now domain. They getting a new storage and all the
> fileserver have to move anyway so the time is right for making
> everything new.
> @Andrew We took lmdb as a backend for the database together with bind9.
> Stefan
> Am 03.02.20 um 23:09 schrieb Andrew Bartlett:
>> On Mon, 2020-02-03 at 13:44 +0100, Stefan Kania via samba wrote:
>>> 	Error verifying signature: parse error
>>> --------------ms040700010204060400070803
>>> Content-Type: text/plain; charset=utf-8
>>> Content-Transfer-Encoding: quoted-printable
>>> Content-Language: en-US
>>> Anyone can give=C2=A0 hint how log it will take to commit the SAM
>>> databas=
>>> e?
>>> We joining a samba 4.11 into a windows domain:
>>> Partition[DC=3Dexample,DC=3Dde] objects[129301/57641]
>>> linked_values[40647=
>>> /42351]
>>> Done with always replicated NC (base, config, schema)
>>> Replicating DC=3DDomainDnsZones,DC=3Dexample,DC=3Dde
>>> Partition[DC=3DDomainDnsZones,DC=3Dexample,DC=3Dde] objects[83/79]
>>> linked_values[0/0]
>>> Replicating DC=3DForestDnsZones,DC=3Dexample,DC=3Dde
>>> Partition[DC=3DForestDnsZones,DC=3Dexample,DC=3Dde] objects[8/8]
>>> linked_values[0/0]
>>> Exop on[CN=3DRID Manager$,CN=3DSystem,DC=3Dexample,DC=3Dde]
>>> objects[3]
>>> linked_values[0]
>>> Committing SAM database
>>> Commiting the database is running now for more then an hour, is this
>>> norm=
>>> al?
>> This can take quite some time on that scale on TDB.  LMDB should be
>> faster from memory.
>> Andrew Bartlett

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