[Samba] samba-tool domain backup offline fails

[James B. Byrne]

On FreeBSD-12.1p7 running Samba-4.10.15 I have a working test AD domain.  While
samba_server is confirmed stopped the 'samba-tool domain backup offline'
command gives the following error:

[root at smb4-1c-testfmso ~ (master)]# hostname
smb4-1.brockley.harte-lyne.ca

[root at smb4-1c-testfmso ~ (master)]# samba-tool domain backup offline
--targetdir=/tmp
ERROR(<class 'IndexError'>): uncaught exception - list index out of range
  File "/usr/local/lib/python3.7/site-packages/samba/netcmd/__init__.py", line
185, in _run
    return self.run(*args, **kwargs)
  File "/usr/local/lib/python3.7/site-packages/samba/netcmd/domain_backup.py",
line 1019, in run
    sid = get_sid_for_restore(samdb)
  File "/usr/local/lib/python3.7/site-packages/samba/netcmd/domain_backup.py",
line 81, in get_sid_for_restore
    rid = int(res[0].get('rIDNextRID')[0])

smb.conf contains:

# Global parameters
[global]
  netbios name = SMB4-1
  realm = BROCKLEY.HARTE-LYNE.CA
  server role = active directory domain controller
  # use 'samba-tool testparm -v | grep services' to list active services
  workgroup = BROCKLEY
  idmap_ldb:use rfc2307 = yes
  vfs objects = dfs_samba4 zfsacl

  # remove nbt as this causes a fatal startup error
  server services = -nbt

  # Eliminate ipv6 errors
  bind interfaces only = Yes
  interfaces = localhost smb4-1

  # DNS
  dns forwarder = 216.185.71.33 216.185.71.34

  # Note diff: sbin vs. bin and _ vs. - and dns vs. ns
  dns update command = /usr/local/sbin/samba_dnsupdate
  ## samba_dnsupdate insists on finding rndc
  rndc command = /usr/bin/true
  ## For secure dns dynamic updates use these (but secure does not work):
  # 1 nsupdate command = /usr/local/bin/samba-nsupdate -g
  # 1 allow dns updates = secure only
  ## For insecure dynamic updates use these settings:
  nsupdate command = /usr/local/bin/samba-nsupdate
  allow dns updates = nonsecure

  # Logging
  log level = 1
  #log file = /var/log/samba4/smbd.log.%m
  log file = /var/log/samba4/smbd.log
  max log size = 10000
  debug timestamp = yes

  # Disable printing
  load printers = no
  printing = bsd
  printcap name = /dev/null
  disable spoolss = yes


[sysvol]
  path = /var/db/samba4/sysvol
  read only = No

[netlogon]
  path = /var/db/samba4/sysvol/brockley.harte-lyne.ca/scripts
  read only = No


[PROFILES]
    comment = Users profiles
    path = /var/samba4/BROCKLEY/PROFILES/
    browseable = No
    read only = No
    force create mode = 0600
    force directory mode = 0700
    csc policy = disable
    store dos attributes = yes
    vfs objects = dfs_samba4 zfsacl

[USERS]
    comment = Users folder redirection
    path = /var/samba4/BROCKLEY/USERS/
    browseable = No
    read only = No
    force create mode = 0600
    force directory mode = 0700
    csc policy = disable
    store dos attributes = yes
    vfs objects = dfs_samba4 zfsacl


Is this problem a configuration error or a bug?


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James B. Byrne                mailto:ByrneJB at Harte-Lyne.ca
Harte & Lyne Limited          http://www.harte-lyne.ca
9 Brockley Drive              vox: +1 905 561 1241
Hamilton, Ontario             fax: +1 905 561 0757
Canada  L8E 3C3