/[smeserver]/rpms/samba/sme10/README.downgrade
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Contents of /rpms/samba/sme10/README.downgrade

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Revision 1.1 - (show annotations) (download)
Thu Sep 29 08:22:00 2016 UTC (8 years, 1 month ago) by vip-ire
Branch: MAIN
CVS Tags: samba-4_6_2-12_el7_4, samba-4_10_16-24_el7_9, samba-4_2_10-7_1_el7_sme, samba-4_4_4-12_5_el7_sme, samba-4_4_4-12_6_el7_sme, samba-4_2_3-10_2_el7_sme, samba-4_4_4-14_6_el7_sme, samba-4_4_4-12_el7_3, samba--, samba-4_6_2-12_3_el7_sme, samba-4_10_16-24_1_el7_sme, samba-4_6_2-12_4_el7_sme, samba-4_6_2-12_2_el7_sme, HEAD
Import samba with DC support in sme10 branch

1 Downgrading Samba
2 =================
3
4 Short version: data-preserving downgrades between Samba versions are not supported
5
6 Long version:
7 With Samba development there are cases when on-disk database format evolves.
8 In general, Samba Team attempts to maintain forward compatibility and
9 automatically upgrade databases during runtime when requires.
10 However, when downgrade is required Samba will not perform downgrade to
11 existing databases. It may be impossible if new features that caused database
12 upgrade are in use. Thus, one needs to consider a downgrade procedure before
13 actually downgrading Samba setup.
14
15 Please always perform back up prior both upgrading and downgrading across major
16 version changes. Restoring database files is easiest and simplest way to get to
17 previously working setup.
18
19 Easiest way to downgrade is to remove all created databases and start from scratch.
20 This means losing all authentication and domain relationship data, as well as
21 user databases (in case of tdb storage), printers, registry settings, and winbindd
22 caches.
23
24 Remove databases in following locations:
25 /var/lib/samba/*.tdb
26 /var/lib/samba/private/*.tdb
27
28 In particular, registry settings are known to prevent running downgraded versions
29 (Samba 4 to Samba 3) as registry format has changed between Samba 3 and Samba 4.

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