samba - May 2017 - Error while demoting Samba 4 DC

Hi,

I have 2 DC Samba 4 in my network.

My new DC is Samba 4.6.3
My Old DC is Samba 4.2.1

I want demote my DC (old) with Samba 4.2.1, but the following message
appears:

~# samba-tool domain demote -Uadministrator
Using dc1.empresa.com.br as partner server for the demotion
Password for [EMPRESA\administrator]:
Deactivating inbound replication
Asking partner server dc1.empresa.com.br to synchronize from us
Error while demoting, re-enabling inbound replication
ERROR(<class 'samba.drs_utils.drsException'>): Error while sending
a
DsReplicaSync for partion
CN=Schema,CN=Configuration,DC=empresa,DC=com,DC=br - drsException:
DsReplicaSync failed (2, 'WERR_BADFILE')
  File
"/opt/samba/lib/python2.7/site-packages/samba/netcmd/domain.py",
line 712, in run
    sendDsReplicaSync(drsuapiBind, drsuapi_handle, ntds_guid, str(part),
drsuapi.DRSUAPI_DRS_WRIT_REP)
  File "/opt/samba/lib/python2.7/site-packages/samba/drs_utils.py",
line
83, in sendDsReplicaSync
    raise drsException("DsReplicaSync failed %s" % estr)


The "samba-tool drs showrepl" command looks is OK.

Would anybody know what is the problem?

Regards,

Márcio Bacci

On Fri, 26 May 2017 00:48:50 -0300
Marcio Demetrio Bacci via samba <samba at lists.samba.org> wrote:
> Hi,
> 
> I have 2 DC Samba 4 in my network.
> 
> My new DC is Samba 4.6.3
> My Old DC is Samba 4.2.1
> 
> I want demote my DC (old) with Samba 4.2.1, but the following message
> appears:
> 
Known problem, so much so that your new DC has a way of fixing it ;-)

Transfer anything you need from the old DC to the new DC (FSMO roles,
files, etc), then turn it off (never to come back)

Now run the demote command on the new DC like this:

samba-tool domain demote --remove-other-dead-server=REMOVE_OTHER_DEAD_SERVER -U
Administrator

see 'samba-tool domain demote --help' for more info.

Rowland