[Samba] Online Backup Fails - list index out of range

[Roy Eastwood]

> -----Original Message-----
> From: samba [mailto:samba-bounces at lists.samba.org] On Behalf Of Rowland penny via samba
> Sent: 29 August 2019 17:48
> To: samba at lists.samba.org
> Subject: Re: [Samba] Online Backup Fails - list index out of range
> 
> On 29/08/2019 17:20, Roy Eastwood wrote:
> > In another thread on this list (https://lists.samba.org/archive/samba/2019-August/225607.html), Rowland suggested that the
> following
> > command doesn't work ie it still requests the password:
> >
> >   samba-tool domain backup online --targetdir=<output-dir> --server=<DC-server> -k yes
> >
> > However, I tried it out on one of my DCs and found it created the backup but failed at the end as this excerpt of the console
output
> > shows:
> >
> > root at tiger-db:~# kinit Administrator
> > Password for Administrator at MICROLYNX.ORG:
> > root at tiger-db:~# samba-tool domain backup online --targetdir=backups --server=tiger-db.microlynx.org -k yes
> > INFO 2019-08-29 17:03:50,319 pid:13945 /usr/lib/python3/dist-packages/samba/join.py #1549: workgroup is MICROLYNX
> > INFO 2019-08-29 17:03:50,320 pid:13945 /usr/lib/python3/dist-packages/samba/join.py #1552: realm is microlynx.org
> > Calling bare provision
> > ...
> > [snip]
> > ...
> > Committing SAM database
> > INFO 2019-08-29 17:04:06,889 pid:13945 /usr/lib/python3/dist-packages/samba/join.py #1643: Setting isSynchronized and
> dsServiceName
> > INFO 2019-08-29 17:04:07,303 pid:13945 /usr/lib/python3/dist-packages/samba/join.py #1555: Cloned domain MICROLYNX (SID
> > S-1-5-21-4012640977-2272627666-3977488320)
> > ERROR(<class 'IndexError'>): uncaught exception - list index out of range
> >    File "/usr/lib/python3/dist-packages/samba/netcmd/__init__.py", line 185, in _run
> >      return self.run(*args, **kwargs)
> >    File "/usr/lib/python3/dist-packages/samba/netcmd/domain_backup.py", line 258, in run
> >      new_sid = get_sid_for_restore(remote_sam)
> >    File "/usr/lib/python3/dist-packages/samba/netcmd/domain_backup.py", line 81, in get_sid_for_restore
> >      rid = int(res[0].get('rIDNextRID')[0])
> >
> > Is this another bug?
> >
> > Thanks,
> >
> > Roy
> >
> >
> Never got that, just kept getting asked for the Administrator password,
> after which the backup completed successfully
> 
> Check your AD.
> 
> Rowland

samba-tool dbcheck --cross-ncs shows no errors, and running Louis'  samba-check-db-repl.sh script shows that replication between
the two DCs is working OK, as is sysvol replication.   There are no errors in the samba logs and I have not seen any problems with
the operation of the domain.   What else to check?

FWIW the samba version is 4.10.6 from Louis' repo running on Debian Buster.

Roy