[Samba] LDAP broken after AD DC upgrade from 4.7 to 4.8

Bastian Machek bm at machek.systems
Fri May 25 20:04:28 UTC 2018

Hi *,

I just upgraded my AD DC from 4.7.6 to 4.8.1. (Arch Linux)
After a reboot my LDAP database is almost empty, when accessed from a 
LDAP browser or dsa.msc.

samba-tool dbcheck --fix fails as even LostAndFound isn't there anymore.
ERROR(ldb): uncaught exception - descriptor_modify on 
CN=SERVER,CN=LostAndFound,DC=dschungel,DC=local failed: No such Base DN: 
   File "/usr/lib/python2.7/site-packages/samba/netcmd/__init__.py", line 
176, in _run
     return self.run(*args, **kwargs)
   File "/usr/lib/python2.7/site-packages/samba/netcmd/dbcheck.py", line 
157, in run
     controls=controls, attrs=attrs)
   File "/usr/lib/python2.7/site-packages/samba/dbchecker.py", line 218, 
in check_database
     error_count += self.check_object(object.dn, attrs=attrs)
   File "/usr/lib/python2.7/site-packages/samba/dbchecker.py", line 2308, 
in check_object
   File "/usr/lib/python2.7/site-packages/samba/dbchecker.py", line 817, 
in err_missing_parent

Funny thing is, if I do ldbsearch on my files in 
/var/lib/samba/private/sam.ldb.d/ everything still seems to be there.

Did anybody have any similar problems?


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