You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
30 lines
1.3 KiB
30 lines
1.3 KiB
2 years ago
|
Downgrading Samba
|
||
|
|
=================
|
||
|
|
|
||
|
|
Short version: data-preserving downgrades between Samba versions are not supported
|
||
|
|
|
||
|
|
Long version:
|
||
|
|
With Samba development there are cases when on-disk database format evolves.
|
||
|
|
In general, Samba Team attempts to maintain forward compatibility and
|
||
|
|
automatically upgrade databases during runtime when requires.
|
||
|
|
However, when downgrade is required Samba will not perform downgrade to
|
||
|
|
existing databases. It may be impossible if new features that caused database
|
||
|
|
upgrade are in use. Thus, one needs to consider a downgrade procedure before
|
||
|
|
actually downgrading Samba setup.
|
||
|
|
|
||
|
|
Please always perform back up prior both upgrading and downgrading across major
|
||
|
|
version changes. Restoring database files is easiest and simplest way to get to
|
||
|
|
previously working setup.
|
||
|
|
|
||
|
|
Easiest way to downgrade is to remove all created databases and start from scratch.
|
||
|
|
This means losing all authentication and domain relationship data, as well as
|
||
|
|
user databases (in case of tdb storage), printers, registry settings, and winbindd
|
||
|
|
caches.
|
||
|
|
|
||
|
|
Remove databases in following locations:
|
||
|
|
/var/lib/samba/*.tdb
|
||
|
|
/var/lib/samba/private/*.tdb
|
||
|
|
|
||
|
|
In particular, registry settings are known to prevent running downgraded versions
|
||
|
|
(Samba 4 to Samba 3) as registry format has changed between Samba 3 and Samba 4.
|