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

[Arthur Ramsey]

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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