[Announce] Samba 4.0.0rc2 Available for Download
kseeger at samba.org
Tue Oct 30 10:09:03 MDT 2012
This is the second release candidate of Samba 4.0. This is *not*
intended for production environments and is designed for testing
purposes only. Please report any defects via the Samba bug reporting
system at https://bugzilla.samba.org/.
Samba 4.0 will be the next version of the Samba suite and incorporates
all the technology found in both the Samba4 series and the
stable 3.x series. The primary additional features over Samba 3.6 are
support for the Active Directory logon protocols used by Windows 2000
This release contains the best of all of Samba's
technology parts, both a file server (that you can reasonably expect
to upgrade existing Samba 3.x releases to) and the AD domain
controller work previously known as 'samba4'.
If you are upgrading, or looking to develop, test or deploy Samba 4.0
releases candidates, you should backup all configuration and data.
Users upgrading from Samba 3.x domain controllers and wanting to use
Samba 4.0 as an AD DC should use the 'samba-tool domain
classicupgrade' command. See the wiki for more details:
Users upgrading from Samba 4.0 alpha and beta releases since alpha15
should run 'samba-tool dbcheck --cross-ncs --fix' before re-starting
Samba. Users upgrading from earlier alpha releases should contact the
team for advice.
Users upgrading an AD DC from any previous release should run
'samba-tool ntacl sysvolreset' to re-sync ACLs on the sysvol share
with those matching the GPOs in LDAP and the defaults from an initial
provision. This will set an underlying POSIX ACL if required (eg not
using the NTVFS file server).
If you used the BIND9_FLATFILE or BIND9_DLZ features,
you'll have to add '-dns' to the 'server services' option,
as the internal dns server (SAMBA_INTERNAL) is the default now.
Samba 4.0 supports the server-side of the Active Directory logon
environment used by Windows 2000 and later, so we can do full domain
join and domain logon operations with these clients.
Our Domain Controller (DC) implementation includes our own built-in
LDAP server and Kerberos Key Distribution Center (KDC) as well as the
Samba3-like logon services provided over CIFS. We correctly generate
the infamous Kerberos PAC, and include it with the Kerberos tickets we
Samba 4.0.0rc2 ships with two distinct file servers. We now use the
file server from the Samba 3.x series 'smbd' for all file serving by
Samba 4.0 also ships with the 'NTVFS' file server. This file server
is what was used in all previous releases of Samba 4.0, and is
tuned to match the requirements of an AD domain controller. We
continue to support this, not only to provide continuity to
installations that have deployed it as part of an AD DC, but also as a
running example of the NT-FSA architecture we expect to move smbd to in
the longer term.
For pure file server work, the binaries users would expect from that
series (nmbd, winbindd, smbpasswd) continue to be available. When
running an AD DC, you only need to run 'samba' (not
nmbd/smbd/winbind), as the required services are co-coordinated by this
As DNS is an integral part of Active Directory, we also provide two DNS
solutions, a simple internal DNS server for 'out of the box' configurations
and a more elaborate BIND plugin using the BIND DLZ mechanism in versions
9.8 and 9.9. During the provision, you can select which backend to use.
With the internal backend, your DNS server is good to go.
If you chose the BIND_DLZ backend, a configuration file will be generated
for bind to make it use this plugin, as well as a file explaining how to
set up bind.
To provide accurate timestamps to Windows clients, we integrate with
the NTP project to provide secured NTP replies. To use you need to
start ntpd and configure it with the 'restrict ... ms-sntp' and
Finally, a new scripting interface has been added to Samba 4, allowing
Python programs to interface to Samba's internals, and many tools and
internal workings of the DC code is now implemented in python.
Parameter Name Description
allow dns updates New
announce as Removed
announce version Removed
cldap port New
client max protocol New
client min protocol New
client signing Changed default
dcerpc endpoint servers New
dgram port New
display charset Removed
dns forwarder New
dns update command New
homedir map Changed default
kernel oplocks Changed default
kernel share modes New
kpasswd port New
krb5 port New
max protocol Removed
min protocol Removed
nbt client socket address New
nbt port New
nsupdate command New
ntp signd socket directory New
ntvfs handler New
paranoid server security Removed
pid directory New
printer admin Removed
rndc command New
rpc big endian New
samba kcc command New
send spnego principal Removed
server max protocol New
server min protocol New
server role New
server services New
server signing Changed default
share backend New
share modes Removed
smb2 max read Changed default
smb2 max write Changed default
smb2 max trans Changed default
socket address Removed
spn update command New
time offset Removed
tls cafile New
tls certfile New
tls crlfile New
tls dh params file New
tls enabled New
tls keyfile New
web port New
winbindd privileged socket directory New
winbind sealed pipes New
winbindd socket directory New
CHANGES SINCE 4.0.0rc1
o Michael Adam <obnox at samba.org>
* BUG 9173: Make the SMB2 compound request create/delete_on_close/
close work as Windows.
o Jeremy Allison <jra at samba.org>
* BUG 9161: Re-add the vfs_Chdir() cache.
* BUG 9189: SMB2 Create doesn't return correct MAX ACCESS access mask in
* BUG 9213: Bad ASN.1 NegTokenInit packet can cause invalid free.
o Christian Ambach <ambi at samba.org>
* BUG 9162: Fix the build of the GPFS VFS module.
* BUG 9197: Only do 'printing_subsystem_update' when printing is enabled.
o Andrew Bartlett <abartlet at samba.org>
* BUG 9228: Fix build on systems without ldap development headers.
o Alexander Bokovoy <ab at samba.org>
* BUG 9157: Cleanup idmap_ldap build dependencies.
* BUG 9228: Make smbldaphelper subsystem an internal library.
* BUG 9229: Fix build of winbindd- and krb5 locator-related manpages.
o Sumit Bose <sbose at redhat.com>
* BUG 9185: Allow DNS resolution of trusted domains if DNS name is
o Ira Cooper <ira at samba.org>
* BUG 9162: Fix build on Illumos/Solaris using '--with-acl'.
* BUG 9173: Compound requests should continue processing.
o Günther Deschner <gd at samba.org>
* BUG 9185: Winbind cannot resolve AD DC in a different subnet.
o Björn Jacke <bj at sernet.de>
* BUG 9162: Fix the build of the ACL VFS modules.
* BUG 9172: Fix reporting of gfs2 quotas.
o Volker Lendecke <vl at samba.org>
* BUG 9217: CreateFile with FILE_DIRECTORY_FILE can create directories
on read-only shares.
o Vladimir Marek <Vladimir.Marek at Oracle.COM>
* BUG 9192: Fix service control for non-internal services.
o Stefan Metzmacher <metze at samba.org>
* BUG 9173: Make the SMB2 compound request create/delete_on_close/
close work as Windows.
* BUG 9184: Fix receiving of UDP packets from 0 bytes.
* BUG 9191: Release the share mode lock before calling exit_server().
* BUG 9193: Fix usage of invalid memory in smb2_signing_check_pdu().
* BUG 9194: Disallow '--prefix=/usr' and '--prefix=/usr/local' without
* BUG 9198: Fix RHEL-CTDB packaging.
o Matthieu Patou <mat at matws.net>
* BUG 9199: Fix usage of "panic action".
* BUG 9233: Fix a non handled memory out of memory.
o Andreas Schneider <asn at samba.org>
* BUG 8632: Fix builtin forms order to match Windows again.
* BUG 9159: Fix generating idmap manpages.
* BUG 9218: Don't segfault if user specified ports out for range.
* BUG 9231: Fix NT_STATUS_IO_TIMEOUT during slow import of printers into
- 'samba-tool domain classicupgrade' will fail when setting ACLs on
the GPO folders with NT_STATUS_INVALID_ONWER in the default
configuration. This happens if, as is typical a 'domain admins'
group (-512) is mapped in the passdb backend being upgraded. This
is because the group mapping to a GID only prevents Samba from
allocating a uid for that group. The uid is needed so the 'domain
admins' group can own the GPO file objects.
To work around this issue, remove the 'domain admins' group before
upgrade, as it will be re-created automatically. You will
of course need to fill in the group membership again. A future release
will make this automatic, or find some other workaround.
- This release makes the s3fs file server the default, as this is the
file server combination we will use for the Samba 4.0 release.
- For similar reasons, sites with ACLs stored by the ntvfs file server
may wish to continue to use that file server implementation, as a
posix ACL will similarly not be set in this case.
- Replication of DNS data from one AD server to another may not work.
The DNS data used by the internal DNS server and bind9_dlz is stored
in an application partition in our directory. The replication of
this partition is not yet reliable.
- Replication may fail on FreeBSD due to getaddrinfo() rejecting names
containing _. A workaround will be in a future release.
- samba_upgradeprovision should not be run when upgrading to this release
from a recent release. No important database format changes have
been made since alpha16.
- Installation on systems without a system iconv (and developer
headers at compile time) is known to cause errors when dealing with
- Domain member support in the 'samba' binary is in its infancy, and
is not comparable to the support found in winbindd. As such, do not
use the 'samba' binary (provided for the AD server) on a member
- There is no NetBIOS browsing support (network neighbourhood)
available for the AD domain controller. (Support in nmbd and smbd
for classic domains and member/standalone servers is unchanged).
- Clock Synchronisation is critical. Many 'wrong password' errors are
actually due to Kerberos objecting to a clock skew between client
and server. (The NTP work in the previous alphas are partly to assist
with this problem).
- The DRS replication code may fail. Please contact the team if you
experience issues with DRS replication, as we have fixed many issues
here in response to feedback from our production users.
RUNNING Samba 4.0 as an AD DC
A short guide to setting up Samba 4 as an AD DC can be found on the wiki:
Reporting bugs & Development Discussion
Please discuss this release on the samba-technical mailing list or by
joining the #samba-technical IRC channel on irc.freenode.net.
If you do report problems then please try to send high quality
feedback. If you don't provide vital information to help us track down
the problem then you will probably be ignored. All bug reports should
be filed under the Samba 4.0 product in the project's Bugzilla
== Our Code, Our Bugs, Our Responsibility.
== The Samba Team
The uncompressed tarballs and patch files have been signed
using GnuPG (ID 6568B7EA). The source code can be downloaded
The release notes are available online at:
Binary packages will be made available on a volunteer basis from
Our Code, Our Bugs, Our Responsibility.
The Samba Team
More information about the samba-technical