[Samba] Classicupgrade of 4.1.17 error: "list index out of range"

[MI]

Solved. The fix was to replace

     passdb backend = ldapsam

with

     passdb backend = ldapsam:"ldap://localhost"



-------- Original Message --------
> I'm trying to upgrade to AD from a Samba 4 PDC with openLDAP (on Debian 8).
>
> I'm stuck at this very unhelpful error:
>
>    # samba-tool domain classicupgrade --dbdir=/usr/local/samba.PDC/dbdir/
>    --use-xattrs=yes --realm=ad.mydomain.tld --dns-backend=SAMBA_INTERNAL
>    --option="interfaces=lo eth2" --option="bind interfaces only=yes"
>    /etc/samba/smb.conf.PDC
>    Reading smb.conf
>    Provisioning
>    Exporting account policy
>    Exporting groups
>    Exporting users
>       Skipping wellknown rid=501 (for username=nobody)
>    Next rid = 3307
>    ERROR(<type 'exceptions.IndexError'>): uncaught exception - list index out of range
>       File "/usr/lib/python2.7/dist-packages/samba/netcmd/__init__.py", line 175, in
>    _run
>         return self.run(*args, **kwargs)
>       File "/usr/lib/python2.7/dist-packages/samba/netcmd/domain.py", line 1321, in 
> run
>         useeadb=eadb, dns_backend=dns_backend, use_ntvfs=use_ntvfs)
>       File "/usr/lib/python2.7/dist-packages/samba/upgrade.py", line 796, in
>    upgrade_from_samba3
>         urls = samba3.lp.get("passdb backend").split(":",1)[1].strip('"')
>
>
> Any ideas on how to fix it or at least find some better clue?
>
>    # samba --version
>    Version 4.1.17-Debian
>
>    # lsb_release -d
>    Description:    Debian GNU/Linux 8.3 (jessie)
>
>
>
> Thanks.
>