[Samba] Continuous Normalisation error for attribute whenCreated when performing dbcheck

Andreas Oster aoster at novanetwork.de
Thu Oct 16 08:23:37 MDT 2014


Am 16.10.2014 um 13:21 schrieb L.P.H. van Belle:
> yes.. 
> 
> the attibute "whenCreated" is not synced ( correctly) 
> there is a bug report of this. 
> 
> you can use this script: ( original created by Mourit Jan of the samba list ) 
> 
> used on debian/ubuntu
> 
> 
> #!/bin/sh
> 
> ## the email adress to report to.
> SETMAILREPORT=your at emaildomain.tld
> 
> ## First DC ( hostname or ipadres ) ( The DC with the FSMO Roles ) 
> SETDCFSMO="dc1"
> ## Second DC ( hostname or ipadres more then 2 DC's, separated by space )
> SETOTHERDCS="dc2"
> 
> SETSAMBATOOLS=`which samba-tool`
> SETREMOVELOG=yes
> 
> for x in $SETOTHERDCS ; do
>     $SETSAMBATOOLS ldapcmp --filter="whenChanged" ldap://$SETDCFSMO ldap://$SETO                                                                                                                                THERDCS  -d0 2>&1 > /tmp/samba_ldapcmp_checkdb
> done
> 
> if grep -q FAILURE /tmp/samba_ldapcmp_checkdb; then
>    cat /tmp/samba_ldapcmp_checkdb | mail -s "FAILURE ldapcmp between $SETDCFSMO                                                                                                                                 and $SETOTHERDCS" $SETMAILREPORT
> fi
> 
> if [ $SETREMOVELOG = yes ]; then
>     rm /tmp/samba_ldapcmp_checkdb
> fi
>  
> 
>> -----Oorspronkelijk bericht-----
>> Van: aoster at novanetwork.de 
>> [mailto:samba-bounces at lists.samba.org] Namens Andreas Oster
>> Verzonden: donderdag 16 oktober 2014 11:08
>> Aan: samba at lists.samba.org
>> Onderwerp: [Samba] Continuous Normalisation error for 
>> attribute whenCreated when performing dbcheck
>>
>> Hi all,
>>
>> since the migration of our old Win2k domain to Samba4 some years ago
>> I get a lot of errors like the following when doing a
>> "samba-tool dbcheck --cross-ncs --fix" :
>>
>>
>> ERROR: Normalisation error for attribute whenCreated in
>> CN=rpc-Ns-Group,CN=Schema,CN=Configuration,DC=samdom,DC=com
>> value '19700101000000.0Z' should be '16010101000000.0Z'
>> Fix normalisation for whenCreated from
>> CN=rpc-Ns-Group,CN=Schema,CN=Configuration,DC=samdom,DC=com? [YES]
>> Normalised attribute whenCreated
>>
>>
>> This repeats 1000+ times for many different entries.
>>
>> The samba-tool unfortunately does not fix the issue because 
>> when I start
>> it a second time it will complain again, this time with values switched
>> around:
>>
>> value '16010101000000.0Z' should be '19700101000000.0Z'
>>
>>
>> Does anyone have an idea how to fix this ?
>>
>> Thank you very much for your kind help.
>>
>> best regards
>>
>> Andreas
>>
>> -- 
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>>
>>
> 
Hello L.P.H.

I have done the compare and it seams that the values are, as you have
thought, are actually out of sync between my two DCs:

Example:

Comparing:
'CN=meetingScope,CN=Schema,CN=Configuration,DC=samdom,DC=com' [ldap://dc03]
'CN=meetingScope,CN=Schema,CN=Configuration,DC=samdom,DC=com' [ldap://dc01]
    Difference in attribute values:
        whenCreated =>
['19691231235959.0Z']
['19700101000000.0Z']


Is there already a verified/official procedure to fix this issue ?

Thanks

best regards

Andreas


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