[Samba] samba 4.14.10: DC, netlogon: folders disappear

[Stefan G. Weichinger]

Strange behavior:

I have 2 samba-4.14.10 DCs on Debian 11.1

For rolling out a software I try to create shared directories in 
\\DC\netlogon

I create them within Windows Explorer on a domain member server.

I can create the folders, see them in the linux filesystem, permissions 
seem ok.

Within a minute or so that folder is GONE again. What could cause that?

Haven't changed config for more than a year or so.

testparm:

# Global parameters
[global]
	dns forwarder = 8.8.8.8
	ldap server require strong auth = No
	load printers = No
	passdb backend = samba_dsdb
	printcap name = /dev/null
	realm = mydom.AT
	server role = active directory domain controller
	template shell = /bin/bash
	time server = Yes
	usershare path =
	workgroup = BUERO
	rpc_server:tcpip = no
	rpc_daemon:spoolssd = embedded
	rpc_server:spoolss = embedded
	rpc_server:winreg = embedded
	rpc_server:ntsvcs = embedded
	rpc_server:eventlog = embedded
	rpc_server:srvsvc = embedded
	rpc_server:svcctl = embedded
	rpc_server:default = external
	winbindd:use external pipes = true
	sdb:schema update allowed = no
	idmap_ldb:use rfc2307 = yes
	idmap config * : backend = tdb
	map archive = No
	vfs objects = dfs_samba4 acl_xattr


[netlogon]
	path = /var/lib/samba/sysvol/mydom.at/scripts
	read only = No
	acl_xattr:ignore system acls = Yes


[sysvol]
	path = /var/lib/samba/sysvol
	read only = No
	acl_xattr:ignore system acls = Yes


[rsnapshots]
	path = /mnt/rsnapshots
	valid users = @rsnapshots