samba - Apr 2017 - Dbcheck: cannot remove missing target object (msDS-NC-Replica-Locations)

Hello Folks,

I just upgraded from 4.1.13 to 4.6.2 (CentOS 6.8, x86_64) and I'm 
getting this error:

/usr/local/samba/bin/samba-tool dbcheck --cross-ncs --fix

Checking 7931 objects
ERROR: no target object found for GUID component for 
msDS-NC-Replica-Locations in object 
CN=d05db3d2-6378-4e97-9f7c-c1bae8bccec2,CN=Partitions,CN=Configuration,DC=foo,DC=bar,DC=ca
- 
<GUID=cb30100c490c20409dfc437637d94dbf>;<RMD_ADDTIME=130233080950000000>;<RMD_CHANGETIME=130233080950000000>;<RMD_FLAGS=0>;<RMD_INVOCID=5cac4aa401700b4da6dec47e78cc081f>;<RMD_LOCAL_USN=6106>;<RMD_ORIGINATING_USN=7708>;<RMD_VERSION=1>;CN=NTDS
Settings,CN=SRV-DC2,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=foo,DC=bar,DC=ca
Not removing dangling forward link
ERROR: no target object found for GUID component for 
msDS-NC-Replica-Locations in object 
CN=a1dfa348-4a13-445d-88cc-5d96f4e800f7,CN=Partitions,CN=Configuration,DC=foo,DC=bar,DC=ca
- 
<GUID=cb30100c490c20409dfc437637d94dbf>;<RMD_ADDTIME=130233080950000000>;<RMD_CHANGETIME=130233080950000000>;<RMD_FLAGS=0>;<RMD_INVOCID=5cac4aa401700b4da6dec47e78cc081f>;<RMD_LOCAL_USN=6088>;<RMD_ORIGINATING_USN=7710>;<RMD_VERSION=1>;CN=NTDS
Settings,CN=SRV-DC2,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=foo,DC=bar,DC=ca
Not removing dangling forward link
Checked 7931 objects (2 errors)

I've seen someone else have this error on the list.  He was told to 
ignore the errror message.  The '--fix' does not do anything.

A tombstone expunge also does nothing:

/usr/local/samba/bin/samba-tool domain tombstones expunge
Removed 0 objects and 0 links successfully

Did I read correctly?   I don't seem to be having replication problems...

I suspect this is caused by the fact that SRV-DC2 was re-installed at 
one point.

Thank You!


-- 
Luc Lalonde, analyste
-----------------------------
Département de génie informatique:
École polytechnique de MTL
(514) 340-4711 x5049
Luc.Lalonde at polymtl.ca
-----------------------------

On Mon, 24 Apr 2017 15:33:05 -0400
Luc Lalonde via samba <samba at lists.samba.org> wrote:
> 
> I've seen someone else have this error on the list.  He was told to 
> ignore the errror message.  The '--fix' does not do anything.
> 
> A tombstone expunge also does nothing:
> 
> /usr/local/samba/bin/samba-tool domain tombstones expunge
> Removed 0 objects and 0 links successfully
> 
> Did I read correctly?   I don't seem to be having replication
> problems...
> 
> I suspect this is caused by the fact that SRV-DC2 was re-installed at 
> one point.
> 
Yes, just ignore them, it seems that a fix for something else is now
also showing errors like these, it seems that things like this could
have always been there, but they weren't show before. Hopefully they
will be hidden again until they can be fixed properly.

Rowland