samba_downgrade_db - Man Page

samba_downgrade_db [-H] [-s]

This tool is part of the samba(8) suite​.

The format of the Samba Active Directory (AD) database changed in version 4​.8 and 4​.11​. When downgrading a Samba AD Domain Controller (DC) to a release that is older than either of these versions (e​.g​. 4​.11 to 4​.10), the AD database must be manually downgraded before the Samba packages can be safely downgraded​.

This tool downgrades a Samba sam​.ldb database from the format used in version 4​.25​.0 to that of version 4​.7​. The v4​.7 database format can safely be read by any version of Samba​. If necessary, later versions of Samba will repack and reconfigure a v4​.7-format database when the samba executable is first started​.

Note that all Samba services must be stopped on the DC before running this tool​. Once the tool has run, do not restart samba or modify the database before the Samba software package has been downgraded​.

-H [sam​.ldb file]

Link directly to a sam​.ldb file instead of using path in system smb​.conf

-s [smb​.conf file]

Link directly to smb​.conf file instead of system default (usually in /usr/local/samba/etc/smb​.conf)

This man page is complete for version 4​.25​.0 of the Samba suite​.

The original Samba software and related utilities were created by Andrew Tridgell​. Samba is now developed by the Samba Team as an Open Source project similar to the way the Linux kernel is developed​.

The samba_downgrade_db tool was developed by the Samba team at Catalyst IT Ltd​.