[Samba] ad2003 schema while forest/domain at 2008R2 level

Rowland Penny rpenny at samba.org
Wed Sep 28 16:01:19 UTC 2016

On Wed, 28 Sep 2016 17:37:32 +0200
Denis Cardon via samba <samba at lists.samba.org> wrote:

> Hi everyone,
> I came across this issue today while upgrading a samba4 AD. The 
> forest/domain level is 2008R2, however the schema partition is
> actually missing the msDS-isRODC attribute (and probably a few
> others). It makes the ADUC console to failed on that entry below.
> Here is the samba log message (which is quite explicit :-)
> Sep 28 16:55:36 srvads samba[27900]: [2016/09/28 16:55:36.819666,  0] 
> ../lib/ldb-samba/ldb_wrap.c:76(ldb_wrap_debug)
> Sep 28 16:55:36 srvads samba[27900]:   ldb: acl_read: 
> CN=SRVADS,OU=Domain Controllers,DC=domain,DC=lan cannot find 
> attr[msDS-isRODC] in of schema
> I don't know how I messed up the schema partition, and since I don't 
> have any side effect but the ADUC failure message when clicking on
> the dc entry (everything else works fine), I think that error is
> lying there for quite some time. The domain was upgraded from a MSAD
> 2003 domain three or four years ago.
> So my question is : since my DC is already on 2008R2 domain/forest 
> level, is there anyway I can force the schema upgrade to 2008R2 
> independently of the samba-tool domain raise command line?
> Cheers,
> Denis

You could start by finding out just what schema version you actually
have, see here:



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