[Samba] Samba 4.7.0 replication issue: failed get spanning tree edges

Garming Sam garming at catalyst.net.nz
Thu Sep 28 21:21:32 UTC 2017

Did you check that these groups were actually consistent before you 
upgraded (have you got a backup to look at the old groups)? The 
consistency checking definitely got stricter in 4.7, but there may still 
be a bug here.



On 29/09/17 10:02, Arthur Ramsey via samba wrote:
> I fixed this with the following process.
> 1. Identify affected groups with "samba-tool dbcheck --cross-ncs",
>    which reports errors like "ERROR: orphaned backlink attribute
>    'memberOf'".
> 2. Create new group
> 3. Execute "perl ad_clone_group.pl 'Foobar_Group' ''New_Group" to copy
>    members from broken group to new group: https://pastebin.com/6L8NZPRC
> 4. Delete bad group
> 5. Rename new group to name of bad group
> 6. Expunge tombstone with "samba-tool domain tombstones expunge
>    --tombstone-lifetime=0"
> 7. Check with "samba-tool dbcheck --cross-ncs --fix" again
> Thanks,
> Arthur
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