Hello,
Attempting to run
samba-tool domain backup online --server=pfdc1.domain.local
--targetdir=/backups/ -U administrator
gives the following errors.
Pre-loading the Samba 4 and AD schema
Unable to determine the DomainSID, can not enforce uniqueness constraint
on local domainSIDs
Partition[DC=domain,DC=local] objects[1716/1738] linked_values[0/839]
../lib/ldb/ldb_tdb/ldb_index.c:2352: duplicate attribute value in
CN=MRLENOVO-1,OU=Computers,OU=Records,OU=SITEA,DC=domain,DC=local for
index on servicePrincipalName, duplicate of objectGUID
6f7a7d42-5a8e-4329-a6ff-083ff10a9d2b in
@INDEX:SERVICEPRINCIPALNAME:TERMSRV/MRLENOVO-1.domain.LOCAL
Cloned domain DOMAIN (SID S-1-5-21-940051827-2291820289-3341758437)
ERROR(runtime): uncaught exception - (3221225506, '{Access Denied} A
process has requested access to an object but has not been granted those
access rights.')
File
"/usr/local/samba/lib/python2.7/site-packages/samba/netcmd/__init__.py",
line 177, in _run
return self.run(*args, **kwargs)
File
"/usr/local/samba/lib/python2.7/site-packages/samba/netcmd/domain_backup.py",
line 242, in run
backup_online(smb_conn, sysvol_tar, remote_sam.get_domain_sid())
File
"/usr/local/samba/lib/python2.7/site-packages/samba/ntacls.py",
line 499, in backup_online
ntacl_sddl_str = smb_helper.get_acl(r_name, as_sddl=True)
File
"/usr/local/samba/lib/python2.7/site-packages/samba/ntacls.py",
line 322, in get_acl
smb_path, SECURITY_SECINFO_FLAGS, SECURITY_SEC_FLAGS)
I am running this command from the DC I wish to make the backup of.
Should I be running this from a remote DC? Thanks.
On 6/11/18 7:14 AM, James Atwell via samba wrote:> I am running this command from the DC I wish to make the backup of. > Should I be running this from a remote DC? Thanks.Hi, If running in online mode, then ideally, yes (on a host without any Samba config files because that might affect the backup). If it's still happening, then a normal join might actually be broken (possibly by this bug https://bugzilla.samba.org/show_bug.cgi?id=8929). Cheers, Garming
Mgr. Peter Tuharsky
2018-Nov-06 10:00 UTC
[Samba] Windows 10 app crashing after fileserver update from Samba 4.2 to 4.5
Hi, we have a network-hosted app for windows that is being executed from smb share. The app worked well with Windows up to 7. Now, after upgrading clients to Windows 10, the app suddenly crashes after some 1-2 hours of use (or idle). The vendor indicates, that the problem may relate to reading the app's DLLs. The interesting thing is, that the problem only appears when the share is hosted on Samba 4.5(.12) or Windows 2016 server. We don't see the problem on Samba 4.2 or Windows 2008R2 server. However, due to security and infrastructure reasons we don't see possibility to keep these systems for too long. We would like to migrate the app to Samba 4.5. I feel, that the culprit must be some new SMB functionality that appeared both on Windows 10, Windows 2016 and Samba 4.5, that makes the difference against the older Windows and Samba systems. Some kind of caching, locking, or something like that. Maybe related to SMB v3? Theoretically, the code might even have been present in older Samba too, but may have been enabled only later by changing some default between versions. If I could switch the feature back to the old way in config, it may workaround the problem. I just don't know, which one could it be. Does anyone have a clue?