[Samba] [l-dsi-systeme] Problem to demote Samba4 DC

Davy HUBERT davy.hubert at univ-montp3.fr
Fri Oct 4 02:27:02 MDT 2013

Hi everybody,

I still have this problem.
I am using Samba 4.0.6 is there a known issue for my particular problem ?

Here is my smb.conf :

# Global parameters
         workgroup = UM3
         realm = my.realm.fqdn
         netbios name = SAMBAPDC
         server role = active directory domain controller
         idmap_ldb:use rfc2307 = yes
         dns forwarder = x.x.x.x
         dsdb:schema update allowed = yes

         path = /usr/local/samba/var/locks/sysvol/my.realm.fqdn/scripts
         read only = No

         path = /usr/local/samba/var/locks/sysvol
         read only = No

DSI/SMI - Unité Systèmes
Université Paul-Valéry, Montpellier 3
davy.hubert at univ-montp3.fr

Le 24/09/2013 13:36, Davy HUBERT a écrit :
> Hello,
> I recently migrated our samba 3 domain to an AD domain using Samba 4 
> classic upgrade tool.
> DNS is provided by the internal dns server of Samba 4.
> I promoted a Windows 2k8 box as a new DC of this domain and I transfer 
> all the 5 FSMO roles to this windows box.
> Now I would like to demote the Samba4 DC but when I tried I got this 
> message :
> # samba-tool domain demote
> ERROR: Current DC is still the owner of 2 role(s), use the role 
> command to transfer roles to another DC
> When check the fsmo roles status via "samba-tool fsmo show" on linux 
> or with ntdsutil on windows it confirms that the Samba 4 DC doesn't 
> own anything.
> Then, I tried to just stop samba4 and follow the microsoft procedure 
> to remove a failed DC. But when I do that the domain fails, i've got 
> an error message when i try to open any AD tool (ADUC for example) 
> saying that the "domain cannot be found".
> It seems that something is handled by Samba only but I can't figure 
> out what.
> Is this a DNS problem ? Should I use Bind ?
> Well, it's not urgent... wait a minute, my boss has a chainsaw, maybe 
> I should hurry :D .
> Best regards,

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