[Samba] RODC and Tombstones

Rowland penny rpenny at samba.org
Sat Mar 20 12:21:06 UTC 2021

On 20/03/2021 11:28, cn--- via samba wrote:
> Hello all,
> now that we have an RODC running I have seen some things I want to 
> clarify.
> Is it normal that one gets these errors?
>  ../../source4/dsdb/kcc/garbage_collect_tombstones.c:105: Failed to 
> remove deleted object
> And that the accumulate? Already around 1000 Tombstones (mainly DNS 
> Entries). I can delete them on the normal DCs but they stay on the RODC.
> Normal?

 From my understanding of RODC's, yes and no 😁

A RODC hosts a read-only copy of the DNS records, so it cannot update 
dns records, these should be done on a RWDC and replicated back, so the 
error message is correct. In my opinion, that is a bug, it shouldn't be 
run against a RODC and the tombstone deletions should be done by 
replication from a RWDC, something that doesn't seem to be happening in 
your case.

can you please open a bug report about this.


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