1SAMBA_DOWNGRADE_DB(8)            User Commands           SAMBA_DOWNGRADE_DB(8)
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NAME

6       samba_downgrade_db - Samba tool for downgrading AD databases
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SYNOPSIS

9       samba_downgrade_db [-H] [-s]
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DESCRIPTION

12       This tool is part of the samba(8) suite.
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14       The format of the Samba Active Directory (AD) database changed in
15       version 4.8 and 4.11. When downgrading a Samba AD Domain Controller
16       (DC) to a release that is older than either of these versions (e.g.
17       4.11 to 4.10), the AD database must be manually downgraded before the
18       Samba packages can be safely downgraded.
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20       This tool downgrades a Samba sam.ldb database from the format used in
21       version 4.15.2 to that of version 4.7. The v4.7 database format can
22       safely be read by any version of Samba. If necessary, later versions of
23       Samba will repack and reconfigure a v4.7-format database when the samba
24       executable is first started.
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26       Note that all Samba services must be stopped on the DC before running
27       this tool. Once the tool has run, do not restart samba or modify the
28       database before the Samba software package has been downgraded.
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OPTIONS

31       -H [sam.ldb file]
32           Link directly to a sam.ldb file instead of using path in system
33           smb.conf
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35       -s [smb.conf file]
36           Link directly to smb.conf file instead of system default (usually
37           in /usr/local/samba/etc/smb.conf)
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VERSION

40       This man page is complete for version 4.15.2 of the Samba suite.
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AUTHOR

43       The original Samba software and related utilities were created by
44       Andrew Tridgell. Samba is now developed by the Samba Team as an Open
45       Source project similar to the way the Linux kernel is developed.
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47       The samba_downgrade_db tool was developed by the Samba team at Catalyst
48       IT Ltd.
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52Samba 4.15.2                      11/13/2021             SAMBA_DOWNGRADE_DB(8)