samba - May 2018 - IRPC callback failed for DsReplicaSync - NT_STATUS_OBJECT_NAME_NOT_FOUND

Hello,

I am changing 2 x Gentoo/Samba 4.1 AD DCs for 2 x Ubuntu/Samba 4.7 AD DCs.

I have joined the 2 new DCs and transferred the role to #3.

I am performing sysvol replication from #3 to #4 quite happily with no errors.

I have left them for 2 weeks.

Windows desktops, etc. appear fine with no problems.

I now want to demote and remove #1 and #2 from the domain and network.

In preparation, I am checking replication and have noticed this error in the
syslog for #3 which has the FSMO role...

May 25 13:20:16 dc3 samba[1051]: [2018/05/25 13:20:16.502266,  0]
../source4/rpc_server/common/forward.c:51(dcesrv_irpc_forward_callback)
May 25 13:20:16 dc3 samba[1051]:   IRPC callback failed for DsReplicaSync -
NT_STATUS_OBJECT_NAME_NOT_FOUND

...which is repeating every 5 seconds.

This error does not appear on the other 3 DCs.

I am concerned that #3 is not replicating automatically to #4 which is what we
want.

Any ideas?

-- 

Paul Littlefield

On Fri, 25 May 2018 13:33:19 +0000
Paul Littlefield via samba <samba at lists.samba.org> wrote:
> Hello,
> 
> I am changing 2 x Gentoo/Samba 4.1 AD DCs for 2 x Ubuntu/Samba 4.7 AD
> DCs.
> 
> I have joined the 2 new DCs and transferred the role to #3.
> 
> I am performing sysvol replication from #3 to #4 quite happily with
> no errors.
> 
> I have left them for 2 weeks.
> 
> Windows desktops, etc. appear fine with no problems.
> 
> I now want to demote and remove #1 and #2 from the domain and network.
> 
> In preparation, I am checking replication and have noticed this error
> in the syslog for #3 which has the FSMO role...
> 
> May 25 13:20:16 dc3 samba[1051]: [2018/05/25 13:20:16.502266,
> 0] ../source4/rpc_server/common/forward.c:51(dcesrv_irpc_forward_callback)
> May 25 13:20:16 dc3 samba[1051]:   IRPC callback failed for
> DsReplicaSync - NT_STATUS_OBJECT_NAME_NOT_FOUND
> 
> ...which is repeating every 5 seconds.
> 
> This error does not appear on the other 3 DCs.
> 
> I am concerned that #3 is not replicating automatically to #4 which
> is what we want.
> 
> Any ideas?
> 
Can you post the smb.conf files.

Rowland

On 25/05/18 15:14, Rowland Penny via samba wrote:
> Can you post the smb.conf files.
Typically, in true I.T. fashion... a reboot of all 4 DCs has fixed the error.

(sigh)

I now have a different problem and error on trying to demote, which I shall post
separately.

Thank you for replying.

:-)

-- 

Paul Littlefield