4 This is the first release candidate of Samba 4.2. This is *not*
5 intended for production environments and is designed for testing
6 purposes only. Please report any defects via the Samba bug reporting
7 system at https://bugzilla.samba.org/.
9 Samba 4.2 will be the next version of the Samba suite.
15 Read the "Winbindd/Netlogon improvements" section (below) carefully!
21 Transparent File Compression
22 ============================
24 Samba 4.2.0 adds support for the manipulation of file and folder
25 compression flags on the Btrfs filesystem.
26 With the Btrfs Samba VFS module enabled, SMB2+ compression flags can
27 be set remotely from the Windows Explorer File->Properties->Advanced
28 dialog. Files flagged for compression are transparently compressed
29 and uncompressed when accessed or modified.
31 Previous File Versions with Snapper
32 ===================================
34 The newly added Snapper VFS module exposes snapshots managed by
35 Snapper for use by Samba. This provides the ability for remote
36 clients to access shadow-copies via Windows Explorer using the
37 "previous versions" dialog.
39 Winbindd/Netlogon improvements
40 ==============================
42 The whole concept of maintaining the netlogon secure channel
43 to (other) domain controllers is rewritten in order to maintain
44 global state in a netlogon_creds_cli.tdb. This is the proper fix
45 for a large number of bugs:
47 https://bugzilla.samba.org/show_bug.cgi?id=6563
48 https://bugzilla.samba.org/show_bug.cgi?id=7944
49 https://bugzilla.samba.org/show_bug.cgi?id=7945
50 https://bugzilla.samba.org/show_bug.cgi?id=7568
51 https://bugzilla.samba.org/show_bug.cgi?id=8599
53 In addition a strong session key is required by default now,
54 which means that communication to older servers or clients
55 might be rejected by default.
57 For the client side we the following new options:
58 "require strong key" (yes by default), "reject md5 servers" (no by default).
59 E.g. for Samba 3.0.37 you need "require strong key = no" and
60 for NT4 DCs you need "require strong key = no" and "client NTLMv2 auth = no",
62 On the server side (as domain controller) we have the following new options:
63 "allow nt4 crypto" (no by default), "reject md5 client" (no by default).
64 E.g. in order to allow Samba < 3.0.27 or NT4 members to work
65 you need "allow nt4 crypto = yes"
67 winbindd does not list group memberships for display purposes
68 (e.g. getent group <domain\<group>) anymore by default.
69 The new default is "winbind expand groups = 0" now,
70 the reason for this is the same as for "winbind enum users = no"
71 and "winbind enum groups = no". Providing this information is not always
72 reliably possible, e.g. if there're trusted domains.
74 Please consult the smb.conf manpage for more details of this new options.
76 Larger IO sizes for SMB2/3 by default
77 =====================================
79 The default values for "smb2 max read", "smb2 max write" and "smb2 max trans"
80 have been changed to 8388608 (8MiB) in order to match the default of
83 ######################################################################
90 Parameter Name Description Default
91 -------------- ----------- -------
93 allow nt4 crypto New no
94 neutralize nt4 emulation New no
95 reject md5 client New no
96 reject md5 servers New no
97 require strong key New yes
98 smb2 max read Changed default 8388608
99 smb2 max write Changed default 8388608
100 smb2 max trans Changed default 8388608
101 winbind expand groups Changed default 0
107 #######################################
108 Reporting bugs & Development Discussion
109 #######################################
111 Please discuss this release on the samba-technical mailing list or by
112 joining the #samba-technical IRC channel on irc.freenode.net.
114 If you do report problems then please try to send high quality
115 feedback. If you don't provide vital information to help us track down
116 the problem then you will probably be ignored. All bug reports should
117 be filed under the Samba 4.2 product in the project's Bugzilla
118 database (https://bugzilla.samba.org/).
121 ======================================================================
122 == Our Code, Our Bugs, Our Responsibility.
124 ======================================================================