Failed to prepare commit of transaction: DRS linked attribute for GUID

[Tim Beale]

Hi,

No, you can't patch the working samba. You would need to clone the git
repo, build it, and reinstall samba.

Did you try 'samba-tool drs replicate --local' to see if that helps?

Cheers,
Tim

On 06/09/17 00:40, denis.shigapov via samba-technical wrote:
> Hi
> A patch can be rolled into a working samba, or you need to recompile
> and reinstall the package?
> 
> В Вт, 05/09/2017 в 10:11 +1200, Tim Beale via samba-technical пишет:
>> Hi,
>>
>> We've seen this problem before when inter-operating with Microsoft.
>> See:
>> https://lists.samba.org/archive/samba/2017-June/209020.html
>>
>> The patch that should fix this has been delivered to master. However,
>> unless we backport the related patches, it won't be in a Samba
>> release
>> until 4.8.
>> https://git.samba.org/?p=samba.git;a=commit;h=f87332eb35638cc38f83c58
>> 0d4623ab978088601
>>
>> In the meantime you could try running 'samba-tool drs replicate
>> --local'. This should set the GET_ANC flag in the request, which
>> should
>> hopefully avoid this problem.
>>
>> However, note that when inter-operating between Windows and Samba you
>> could still potentially get cases where replication succeeds, but
>> linked
>> attributes are dropped (because Samba doesn't know how about the
>> target
>> object yet). This should be fixed now in the latest master branch.
>>
>> Cheers,
>> Tim
>>
>> On 04/09/17 23:45, denis.shigapov via samba-technical wrote:
>>>
>>> There is a domain controller on windows 2008R2, DC samba Version
>>> 4.6.5
>>> is connected to it. After renaming the user to make mistakes:
>>>
>>> [2017/09/04 10:04:54.528818,  2]
>>> ../source4/dsdb/samdb/ldb_modules/repl_meta_data.c:6271(replmd_proc
>>> ess_
>>> linked_attribute)
>>>   ../source4/dsdb/samdb/ldb_modules/repl_meta_data.c:6271: WARNING:
>>> Failed to re-resolve GUID f5d7a9b2-981c-49c9-a262-f3ca4c90272a -
>>> using
>>> CN=Пользовтаель Пользоватеть,OU=Users Shop M,DC=euro,DC=ru
>>> [2017/09/04 10:04:54.547960,  2]
>>> ../source4/dsdb/samdb/ldb_modules/repl_meta_data.c:6271(replmd_proc
>>> ess_
>>> linked_attribute)
>>>   ../source4/dsdb/samdb/ldb_modules/repl_meta_data.c:6271: WARNING:
>>> Failed to re-resolve GUID bf04e179-4c7c-4cf9-b7a3-d37b287b1f3e -
>>> using
>>> CN=Пользоватеть2 Пользователь2,OU=продажи,OU=магазин,OU=Users
>>> Office,DC=euro,DC=ru
>>> [2017/09/04 10:04:54.615598,  2]
>>> ../source4/dsdb/samdb/ldb_modules/repl_meta_data.c:6271(replmd_proc
>>> ess_
>>> linked_attribute)
>>>   ../source4/dsdb/samdb/ldb_modules/repl_meta_data.c:6271:
>>> WARNING: 
>>> Failed to re-resolve GUID bf04e179-4c7c-4cf9-b7a3-d37b287b1f3e -
>>> using
>>> CN=Пользоватеть2 Пользователь2,OU=продажи,OU=магазин,OU=Users
>>> Office,DC=euro,DC=ru
>>> [2017/09/04 10:04:54.622398,  0]
>>> ../source4/dsdb/repl/replicated_objects.c:933(dsdb_replicated_objec
>>> ts_c
>>> ommit)
>>>   ../source4/dsdb/repl/replicated_objects.c:933 Failed to prepare
>>> commit of transaction: DRS linked attribute for GUID bf04e179-4c7c-
>>> 4cf9-b7a3-d37b287b1f3e - DN not found
>>> [2017/09/04 10:04:54.629436,  0]
>>> ../source4/dsdb/repl/drepl_out_helpers.c:942(dreplsrv_op_pull_sourc
>>> e_ap
>>> ply_changes_trigger)
>>>   Failed to commit objects:
>>> WERR_GEN_FAILURE/NT_STATUS_INVALID_NETWORK_RESPONSE
>>>
>>>
>>>
>>> I tried to start synchronization and got:
>>>
>>> samba-tool drs replicate srv-m-dc.euro.ru srv-o.euro.ru OU=Users\
>>> Shop\
>>> M,DC=euro,DC=ru
>>> ERROR(<class 'samba.drs_utils.drsException'>):
>>> DsReplicaSync failed - drsException: DsReplicaSync failed (8440,
>>> 'WERR_DS_DRA_BAD_NC')
>>>   File "/usr/lib64/python2.7/site-
>>> packages/samba/netcmd/drs.py", line 368, in run
>>>    
>>> drs_utils.sendDsReplicaSync(server_bind, server_bind_handle,
>>> source_dsa_guid, NC, req_options)
>>>   File "/usr/lib64/python2.7/site-
>>> packages/samba/drs_utils.py", line 83, in sendDsReplicaSync
>>>     raise
>>> drsException("DsReplicaSync failed %s" % estr)
>>>
>>
>>
>