LinuxQuestions.org - Troubles with uIDs on samba AD in mixed OS environment

HI all.

I've got working samba AD server. It is playing nicely with Windows 10 and also successfully authenticating Linux machines with SSSD.
On the Windows machines I have our EMC storage smb mounted via group policy. Managing permissions for users and groups there, as you know, happens with right click, security etc..

As you may have already guessed the troubles come when my Linux machines, that access the storage via nfs mount, need to work with folders and files created from the Windows PCs.
The CentOS computers see created files and folders with the Windows uIDs (from 10000 on) while doing id user provides uID in sort the of 1115001181. Obviously this is a problem when I need to access windows created stuff in Linux, and the other way around.

I'm quite sure that this is common and known issue, but I don't know what is the right way to deal with it, so any wisdom will be helpful.

Here's my AD server smb.conf file

Quote:

[global]
netbios name = AD
realm = XXXXXX
server role = active directory domain controller
server services = s3fs, rpc, nbt, wrepl, ldap, cldap, kdc, drepl, winbindd, ntp_signd, kcc, dnsupdate
workgroup = XXXX
idmap config XXXX:unix_nss_info = yes
log file = /var/log/samba/samba.log
log level = 3
[netlogon]
path = /usr/local/samba/var/locks/sysvol/XXXXXX/scripts
read only = No
[sysvol]
path = /usr/local/samba/var/locks/sysvol
read only = No

Also, sssd.conf

Quote:

[sssd]
domains = xxxx
config_file_version = 2
services = nss, pam
[domain/xxxx]
ad_domain = xxxx
krb5_realm = XXXX
realmd_tags = manages-system joined-with-samba
cache_credentials = True
id_provider = ad
krb5_store_password_if_offline = True
default_shell = /bin/bash
ldap_id_mapping = True
use_fully_qualified_names = False
fallback_homedir = /home/%u
access_provider = ad

Here, switching ldap_id_mapping = True to False breaks the connection and I can no longer authenticate.