Domain Backup doesn't work on nfs but on local file system - in this case
nfs filesystem
samba-tool domain backup online --targetdir=/autofs/backup/linux/samba_dom
--server=sdc01 -UAdministrator
Password for [SDOM\Administrator]:
INFO 2025-09-06 23:07:00,923 pid:25998
/usr/lib/python3/dist-packages/samba/join.py #1637: workgroup is SDOM
INFO 2025-09-06 23:07:00,923 pid:25998
/usr/lib/python3/dist-packages/samba/join.py #1640: realm is
sdom.laurenz.online
Calling bare provision
INFO 2025-09-06 23:07:01,597 pid:25998
/usr/lib/python3/dist-packages/samba/provision/__init__.py #2112: Looking up
IPv4 addresses
WARNING 2025-09-06 23:07:01,602 pid:25998
/usr/lib/python3/dist-packages/samba/provision/__init__.py #2117: More than
one IPv4 address found. Using 192.168.2.170
INFO 2025-09-06 23:07:01,603 pid:25998
/usr/lib/python3/dist-packages/samba/provision/__init__.py #2129: Looking up
IPv6 addresses
WARNING 2025-09-06 23:07:01,608 pid:25998
/usr/lib/python3/dist-packages/samba/provision/__init__.py #2134: More than
one IPv6 address found. Using 2003:d7:b735:a200:82b:641f:3eb3:1525
INFO 2025-09-06 23:07:03,221 pid:25998
/usr/lib/python3/dist-packages/samba/provision/__init__.py #2302: Setting up
share.ldb
INFO 2025-09-06 23:07:03,566 pid:25998
/usr/lib/python3/dist-packages/samba/provision/__init__.py #2306: Setting up
secrets.ldb
INFO 2025-09-06 23:07:04,029 pid:25998
/usr/lib/python3/dist-packages/samba/provision/__init__.py #2311: Setting up
the registry
INFO 2025-09-06 23:07:07,010 pid:25998
/usr/lib/python3/dist-packages/samba/provision/__init__.py #2314: Setting up
the privileges database
INFO 2025-09-06 23:07:07,648 pid:25998
/usr/lib/python3/dist-packages/samba/provision/__init__.py #2317: Setting up
idmap db
INFO 2025-09-06 23:07:08,089 pid:25998
/usr/lib/python3/dist-packages/samba/provision/__init__.py #2324: Setting up
SAM db
INFO 2025-09-06 23:07:08,183 pid:25998
/usr/lib/python3/dist-packages/samba/provision/__init__.py #887: Setting up
sam.ldb partitions and settings
INFO 2025-09-06 23:07:08,188 pid:25998
/usr/lib/python3/dist-packages/samba/provision/__init__.py #899: Setting up
sam.ldb rootDSE
INFO 2025-09-06 23:07:08,219 pid:25998
/usr/lib/python3/dist-packages/samba/provision/__init__.py #1312:
Pre-loading the Samba 4 and AD schema
Unable to determine the DomainSID, can not enforce uniqueness constraint on
local domainSIDs
INFO 2025-09-06 23:07:09,007 pid:25998
/usr/lib/python3/dist-packages/samba/provision/__init__.py #2425: A Kerberos
configuration suitable for Samba AD has been generated at
/autofs/backup/linux/samba_dom/tmp1oebn7pr/private/krb5.conf
INFO 2025-09-06 23:07:09,007 pid:25998
/usr/lib/python3/dist-packages/samba/provision/__init__.py #2427: Merge the
contents of this file with your system krb5.conf or replace it
with this one. Do not create a symlink!
Provision OK for domain DN DC=sdom,DC=laurenz,DC=online
INFO 2025-09-06 23:07:09,042 pid:25998
/usr/lib/python3/dist-packages/samba/join.py #964: Starting replication
Using DS_BIND_GUID_W2K3
Schema-DN[CN=Schema,CN=Configuration,DC=sdom,DC=laurenz,DC=online]
objects[402/1770] linked_values[0/0]
Schema-DN[CN=Schema,CN=Configuration,DC=sdom,DC=laurenz,DC=online]
objects[804/1770] linked_values[0/0]
Schema-DN[CN=Schema,CN=Configuration,DC=sdom,DC=laurenz,DC=online]
objects[1206/1770] linked_values[0/0]
Schema-DN[CN=Schema,CN=Configuration,DC=sdom,DC=laurenz,DC=online]
objects[1608/1770] linked_values[0/0]
Schema-DN[CN=Schema,CN=Configuration,DC=sdom,DC=laurenz,DC=online]
objects[1770/1770] linked_values[0/0]
Analyze and apply schema objects
Partition[CN=Configuration,DC=sdom,DC=laurenz,DC=online] objects[402/1735]
linked_values[0/1]
Partition[CN=Configuration,DC=sdom,DC=laurenz,DC=online] objects[804/1735]
linked_values[0/1]
Partition[CN=Configuration,DC=sdom,DC=laurenz,DC=online] objects[1206/1735]
linked_values[0/1]
Partition[CN=Configuration,DC=sdom,DC=laurenz,DC=online] objects[1608/1735]
linked_values[0/1]
Partition[CN=Configuration,DC=sdom,DC=laurenz,DC=online] objects[1735/1735]
linked_values[66/66]
Replicating critical objects from the base DN of the domain
Partition[DC=sdom,DC=laurenz,DC=online] objects[100/100]
linked_values[25/25]
Partition[DC=sdom,DC=laurenz,DC=online] objects[353/353]
linked_values[25/25]
Done with always replicated NC (base, config, schema)
Replicating DC=DomainDnsZones,DC=sdom,DC=laurenz,DC=online
Partition[DC=DomainDnsZones,DC=sdom,DC=laurenz,DC=online] objects[59/59]
linked_values[0/0]
Replicating DC=ForestDnsZones,DC=sdom,DC=laurenz,DC=online
Partition[DC=ForestDnsZones,DC=sdom,DC=laurenz,DC=online] objects[22/22]
linked_values[0/0]
INFO 2025-09-06 23:07:31,700 pid:25998
/usr/lib/python3/dist-packages/samba/join.py #1084: Committing SAM database
- this may take some time
Repacking database from v1 to v2 format (first record
CN=ms-WMI-QueryLanguage,CN=Schema,CN=Configuration,DC=sdom,DC=laurenz,DC=onl
ine)
Repack: re-packed 10000 records so far
Repacking database from v1 to v2 format (first record
CN=Certificate-AutoEnrollment,CN=Extended-Rights,CN=Configuration,DC=sdom,DC
=laurenz,DC=online)
Repacking database from v1 to v2 format (first record CN=Deleted
Objects,DC=DomainDnsZones,DC=sdom,DC=laurenz,DC=online)
Repacking database from v1 to v2 format (first record
DC=cd77285f-9535-4b23-b8e7-23c90aeeb44f,DC=_msdcs.sdom.laurenz.online,CN=Mic
rosoftDNS,DC=ForestDnsZones,DC=sdom,DC=laurenz,DC=online)
Repacking database from v1 to v2 format (first record
CN=group,CN=ypServ30,CN=RpcServices,CN=System,DC=sdom,DC=laurenz,DC=online)
INFO 2025-09-06 23:07:45,585 pid:25998
/usr/lib/python3/dist-packages/samba/join.py #1104: Committed SAM database
INFO 2025-09-06 23:07:45,597 pid:25998
/usr/lib/python3/dist-packages/samba/join.py #1678: Setting isSynchronized
and dsServiceName
INFO 2025-09-06 23:07:45,792 pid:25998
/usr/lib/python3/dist-packages/samba/join.py #1643: Cloned domain SDOM (SID
S-1-5-21-74134498-2134920930-3402099430)
INFO 2025-09-06 23:07:46,346 pid:25998
/usr/lib/python3/dist-packages/samba/netcmd/domain/backup.py #286: Backing
up sysvol files (via SMB)...
INFO 2025-09-06 23:07:52,232 pid:25998
/usr/lib/python3/dist-packages/samba/netcmd/domain/backup.py #147: Creating
backup file
/autofs/backup/linux/samba_dom/samba-backup-sdom.laurenz.online-2025-09-06T2
3-07-50.447540.tar.bz2...
ERROR(<class 'OSError'>): uncaught exception - [Errno 39]
Directory not
empty: 'sam.ldb.d'
File "/usr/lib/python3/dist-packages/samba/netcmd/__init__.py", line
356,
in _run
return self.run(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/samba/netcmd/domain/backup.py",
line
312, in run
shutil.rmtree(tmpdir)
File "/usr/lib/python3.11/shutil.py", line 732, in rmtree
_rmtree_safe_fd(fd, path, onerror)
File "/usr/lib/python3.11/shutil.py", line 660, in _rmtree_safe_fd
_rmtree_safe_fd(dirfd, fullname, onerror)
File "/usr/lib/python3.11/shutil.py", line 666, in _rmtree_safe_fd
onerror(os.rmdir, fullname, sys.exc_info())
File "/usr/lib/python3.11/shutil.py", line 664, in _rmtree_safe_fd
os.rmdir(entry.name, dir_fd=topfd)