I'm running samba 4.3.11 on Ubuntu server Xenial. It's the only AD-DC in a windows domain that used to be hosted by a single Win2k3 server.
The AD schema version is 30, the functionality level is already raised to 2008_R2 (domain) and 2008 (forest).
ldbsearch -H /var/lib/samba/private/sam.ldb -b 'cn=Schema,cn=Configuration,dc=domain,dc=com' -s base objectVersion # record 1 dn: CN=Schema,CN=Configuration,DC=vswest,DC=intern objectVersion: 30
How can I raise the schema version? I could not find anything on the web.