samba - Aug 2015 - Inconsistent DCs / Failed to convert objects / WERR_GENERAL_FAILURE

Hi,

I'm experiencing a strange replication problem.

Context:
5 samba DC in a single domain
FSMO roles are owned by 10.0.10.11 (vs-dc-siege-001)

vs-dc-siege-001: 10.0.10.11
vs-dc-siege-002: 10.0.10.12

vs-dc-vty-001: 10.0.100.11
vs-dc-vty-002: 10.0.100.12

vs-oc-vty-001: 10.0.100.156


I get the following errors in : samba-tool drs showrepl

CN=Configuration,DC=corp,DC=mydomain,DC=fr
         Default-First-Site-Name\VS-DC-SIEGE-001 via RPC
                 DSA object GUID: c9dcd964-c30e-4a67-a2e5-ecfd29e57602
                 Last attempt @ Thu Aug 27 00:32:26 2015 CEST failed, 
result 58 (WERR_BAD_NET_RESP)
                 54 consecutive failure(s).
                 Last success @ Wed Aug 26 21:41:51 2015 CEST


Seems this error appeared after installing openchange which did lead to 
a schema upgrade.


Samba logs for the non-FSMO DC are showing

[2015/08/27 00:41:57.175418,  0] 
../source4/dsdb/repl/replicated_objects.c:690(dsdb_replicated_objects_convert)
   Failed to convert object CN=Mailbox Store 
(VS-DC-SIEGE-001)\0ADEL:e8d759f3-99da-4f37-8aaa-28e6192b3a3c,CN=Deleted 
Objects,CN=Configuration,DC=corp,DC=mydomain,DC=fr: WERR_GENERAL_FAILURE
[2015/08/27 00:41:57.176518,  0] 
../source4/dsdb/repl/drepl_out_helpers.c:745(dreplsrv_op_pull_source_apply_changes_trigger)
   Failed to convert objects: 
WERR_GENERAL_FAILURE/NT_STATUS_INVALID_NETWORK_RESPONSE
[2015/08/27 00:42:07.434384,  0] 
../source4/dsdb/repl/replicated_objects.c:690(dsdb_replicated_objects_convert)
   Failed to convert object 
CN=ms-Exch-Container,CN=Schema,CN=Configuration,DC=corp,DC=mydomain,DC=fr: 
WERR_GENERAL_FAILURE
[2015/08/27 00:42:07.437905,  0] 
../source4/dsdb/repl/drepl_out_helpers.c:745(dreplsrv_op_pull_source_apply_changes_trigger)
   Failed to convert objects: 
WERR_GENERAL_FAILURE/NT_STATUS_INVALID_NETWORK_RESPONSE

How serious is this issue ?

How to recover from it ?

Thanks

On 27/08/2015 00:52, Laurent CARON wrote:
>    Failed to convert objects:
> WERR_GENERAL_FAILURE/NT_STATUS_INVALID_NETWORK_RESPONSE

I managed to get rid of all those deleted objects.

I forgot to mention this is samba 4.1.18


However the following error persists:

[2015/08/27 02:12:11.312610,  0] 
../source4/dsdb/repl/replicated_objects.c:690(dsdb_replicated_objects_convert)
   Failed to convert object 
CN=ms-Exch-Container,CN=Schema,CN=Configuration,DC=corp,DC=mydomain,DC=fr: 
WERR_GENERAL_FAILURE
[2015/08/27 02:12:11.314467,  0] 
../source4/dsdb/repl/drepl_out_helpers.c:745(dreplsrv_op_pull_source_apply_changes_trigger)
   Failed to convert objects: 
WERR_GENERAL_FAILURE/NT_STATUS_INVALID_NETWORK_RESPONSE
[2015/08/27 02:17:06.463834,  0] 
../source4/dsdb/repl/replicated_objects.c:690(dsdb_replicated_objects_convert)
   Failed to convert object CN=First Organization,CN=Microsoft 
Exchange,CN=Services,CN=Configuration,DC=corp,DC=mydomain,DC=fr: 
WERR_GENERAL_FAILURE
[2015/08/27 02:17:06.465821,  0] 
../source4/dsdb/repl/drepl_out_helpers.c:745(dreplsrv_op_pull_source_apply_changes_trigger)
   Failed to convert objects: 
WERR_GENERAL_FAILURE/NT_STATUS_INVALID_NETWORK_RESPONSE
[2015/08/27 02:17:17.161980,  0] 
../source4/dsdb/repl/replicated_objects.c:690(dsdb_replicated_objects_convert)
   Failed to convert object 
CN=ms-Exch-Container,CN=Schema,CN=Configuration,DC=corp,DC=mydomain,DC=fr: 
WERR_GENERAL_FAILURE
[2015/08/27 02:17:17.164102,  0] 
../source4/dsdb/repl/drepl_out_helpers.c:745(dreplsrv_op_pull_source_apply_changes_trigger)
   Failed to convert objects: 
WERR_GENERAL_FAILURE/NT_STATUS_INVALID_NETWORK_RESPONSE
[2015/08/27 02:22:04.032255,  0] 
../source4/dsdb/repl/replicated_objects.c:690(dsdb_replicated_objects_convert)
   Failed to convert object CN=First Organization,CN=Microsoft 
Exchange,CN=Services,CN=Configuration,DC=corp,DC=mydomain,DC=fr: 
WERR_GENERAL_FAILURE

On Thu, Aug 27, 2015 at 02:28:38AM +0200, Laurent CARON
wrote:
> [2015/08/27 02:22:04.032255,  0]
../source4/dsdb/repl/replicated_objects.c:690(dsdb_replicated_objects_convert)
>   Failed to convert object CN=First Organization,CN=Microsoft
> Exchange,CN=Services,CN=Configuration,DC=corp,DC=mydomain,DC=fr:
> WERR_GENERAL_FAILURE
Hi,

I'd really appreciate if one of the samba power users could give me some
hint about this issue.

Thanks