[Samba] after samba update to 4.9 GIT issue with samba-tool dbcheck

[Andreas Oster]

Hi all,

I have tried to update one of our samba servers from the currently 
installed version 4.8.6 to the latest 4.9git release.
Compilation and installation went through without any errors but when I 
do a dbcheck before the initial start of the new version I do get the 
following error:

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

.......
ERROR(<type 'exceptions.UnicodeEncodeError'>): uncaught exception - 
'ascii' codec can't encode character u'\xfc' in position 302: ordinal 
not in range(128)
   File 
"/usr/local/samba/lib/python2.7/site-packages/samba/netcmd/__init__.py", 
line 177, in _run
     return self.run(*args, **kwargs)
   File 
"/usr/local/samba/lib/python2.7/site-packages/samba/netcmd/dbcheck.py", 
line 157, in run
     controls=controls, attrs=attrs)
   File 
"/usr/local/samba/lib/python2.7/site-packages/samba/dbchecker.py", line 
221, in check_database
     error_count += self.check_object(object.dn, attrs=attrs)
   File 
"/usr/local/samba/lib/python2.7/site-packages/samba/dbchecker.py", line 
2230, in check_object
     error_count += self.check_dn(obj, attrname, syntax_oid)
   File 
"/usr/local/samba/lib/python2.7/site-packages/samba/dbchecker.py", line 
1139, in check_dn
     self.check_duplicate_links(obj, attrname, syntax_oid, linkID, 
reverse_link_name)
   File 
"/usr/local/samba/lib/python2.7/site-packages/samba/dbchecker.py", line 
947, in check_duplicate_links
     dsdb_dn = dsdb_Dn(self.samdb, val.decode('utf8'), forward_syntax)
   File "/usr/local/samba/lib/python2.7/site-packages/samba/common.py", 
line 101, in __init__
     self.dn = ldb.Dn(samdb, self.dnstring)


Does anyone have an idea how to fix this ? Is this a bug or a problem 
with my linux/python environment ?

Thank you for your kind help.

best regards
Andreas