- =================================
- Release Notes for Samba 3.6.0pre1
- July 28, 2010
- =================================
+What's new in Samba 4.0.0 rc1
+=============================
+
+Samba 4.0 will be the next version of the Samba suite and incorporates
+all the technology found in both the Samba4 alpha 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
+and above.
+
+
+WARNINGS
+========
+
+Samba 4.0.0 rc1 is not a final Samba release, however we are now making
+good progress towards a Samba 4.0 release.
+
+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'.
+
+Samba 4.0 is subjected to an awesome battery of tests on an automated
+basis, we have found Samba 4.0 to be very stable in its behaviour.
+However, as with all our pre-releases we still recommend against
+upgrading production servers from Samba 3.x release to Samba 4.0.0rc1
+at this stage.
+
+If you are upgrading, or looking to develop, test or deploy Samba 4.0
+releases candidates, you should backup all configuration and data.
+
+
+UPGRADING
+=========
+
+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:
+https://wiki.samba.org/index.php/Samba4/samba3upgrade/HOWTO
+
+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.
+
+NEW FEATURES
+============
+
+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
+issue.
+
+Samba 4.0.0rc1 ships with two distinct file servers. We now use the
+file server from the Samba 3.x series 'smbd' for all file serving by
+default.
+
+Samba 4.0 also ships with the 'NTVFS' file server. This file server
+is what was used in all previous alpha 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
+master binary.
+
+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
+ntpsigndsocket options.
+
+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.
+
+CHANGES SINCE beta8
+===================
+
+For a list of changes since beta8, please see the git log.
+
+$ git clone git://git.samba.org/samba.git
+$ cd samba.git
+$ git log samba-4.0.0beta8..samba-4.0.0rc1
+
+Some major user-visible changes include:
+
+- The smbd file server now offers SMB3 as the maximum protocol
+ by default. Samba can negotiate version 3 of the SMB protocol
+ and supports the required features, including all required
+ features of SMB 2.1 and SMB 2.0. Note that this does not imply
+ that Samba implements all features of SMB3 since many of them
+ are optional capabilities. Examples of features that Samba does
+ not implement yet are leases (SMB 2.1) and multi-channel (SMB 3).
+
+ Samba now offers an initial support for SMB2 durable file handles.
+ These are enabled by default and can be turned off on a per share
+ basis by setting "durable handles = no" on the share configuration.
+ Note that in order to prevent conflicts with other applications
+ accessing the same files, durable handles are only granted on
+ shares that are configured for CIFS/SMB2-only access, i.e. more
+ explicitly shares that are configured for minimal interoperability
+ with these settings:
+
+ kernel oplocks = no
+ kernel share modes = no
+ posix locking = no
+
+ The option "kernel share modes" has been introduced to be able
+ to turn the translation of SMB share modes into kernel flocks
+ off.
+
+- The 'provision' script was merged into 'samba-tool'
+ as 'samba-tool domain provision' the arguments are still
+ the same.
+
+- The 'updateprovision' script was renamed to 'samba_upgradeprovision'.
+
+- We changed the default dns implementation to the internal dns server
+ (SAMBA_INTERNAL). BIND9_FLATFILE and BIND9_DLZ are still available,
+ but you'll have to add '-dns' to the 'server services' option
+ to disable the internal dns server.
+ The default for 'allow dns updates' has changed to 'secure only'.
+
+KNOWN ISSUES
+============
+
+- '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
+ non-ASCII characters.
+- 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
+ server.
-This is the first preview release of Samba 3.6. 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/.
+- 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).
-Major enhancements in Samba 3.6.0 include:
+- 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.
-Changed security defaults
--------------------------
+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:
-Samba 3.6 has adopted a number of improved security defaults that will
-impact on existing users of Samba.
+ http://wiki.samba.org/index.php/Samba4/HOWTO
- client ntlmv2 auth = yes
- client use spnego principal = no
- send spnego principal = no
-
-The impact of 'client ntlmv2 auth = yes' is that by default we will not
-use NTLM authentication as a client. This applies to the Samba client
-tools such as smbclient and winbind, but does not change the separately
-released in-kernel CIFS client. To re-enable the poorer NTLM encryption
-set '--option=clientusentlmv2auth=no' on your smbclient command line, or
-set 'client ntlmv2 auth = no' in your smb.conf
-
-The impact of 'client use spnego principal = no' is that we may be able
-to use Kerberos to communicate with a server less often in smbclient,
-winbind and other Samba client tools. We may fall back to NTLMSSP in
-more situations where we would previously rely on the insecure
-indication from the 'NegProt' CIFS packet. This mostly occursed when
-connecting to a name alias not recorded as a servicePrincipalName for
-the server. This indication is not available from Windows 2008 or later
-in any case, and is not used by modern Windows clients, so this makes
-Samba's behaviour consistent with other clients and against all servers.
-
-The impact of 'send spnego principal = no' is to match Windows 2008 and
-not to send this principal, making existing clients give more consistent
-behaviour (more likely to fall back to NTLMSSP) between Samba and
-Windows 2008, and between Windows versions that did and no longer use
-this insecure hint.
-
-
-SMB2 support
-------------
-
-SMB2 support in 3.6.0 is fully functional (with one omission),
-and can be enabled by setting:
-
-max protocol = SMB2
-
-in the [global] section of your smb.conf and re-starting
-Samba. All features should work over SMB2 except the modification
-of user quotas using the Windows quota management tools.
-
-As this is the first release containing what we consider
-to be a fully featured SMB2 protocol, we are not enabling
-this by default, but encourage users to enable SMB2 and
-test it. Once we have enough confirmation from Samba
-users and OEMs that SMB2 support is stable in wide user
-testing we will enable SMB2 by default in a future Samba
-release.
-
-
-Internal Winbind passdb changes
--------------------------------
-
-Winbind has been changed to use the internal samr and lsa rpc pipe to get
-local user and group information instead of calling passdb functions. The
-reason is to use more of our infrastructure and test this infrastructure by
-using it. With this approach more code in Winbind is shared.
-
-
-New Spoolss code
-----------------
-
-The spoolss and the old RAP printing code have been completely
-overhauled and refactored.
-
-All calls from lanman/printing code has been changed to go through the
-spoolss RPC interfaces, this allows us to keep all checks in one place
-and avoid special cases in the main printing code.
-Printing code has been therefore confined within the spoolss code.
-
-All the printing code, including the spoolss RPC interfaces has been
-changed to use the winreg RPC interfaces to store all data.
-All data has been migrated from custom, arbitrary TDB files to the
-registry interface. This transition allow us to present correct data to
-windows client accessing the server registry through the winreg RPC
-interfaces to query for printer data. Data is served out from a real
-registry implementation and therefore arguably 100% forward compatible.
-
-Migration code from the previous TDB files formats is provided. This
-code is automatically invoked the first time the new code is run on the
-server. Although manual migration is also available using the 'net
-printer migrate' command.
-
-These changes not only make all the spoolss code much more closer to
-"the spec", it also greatly improves our internal testing of both
-spoolss and winreg interfaces, and reduces overall code duplication.
-
-As part of this work, new tests have been also added to increase
-coverage.
-
-This code will also allow, in future, an easy transition to split out
-the spooling functions into a separate daemon for those OEMs that do not
-need printing functionality in their appliances, reducing the code
-footprint.
-
-
-ID Mapping Changes
-------------------
-
-The id mapping configuration has been a source of much grief in the past.
-For this release, id mapping has ben rewritten yet again with the goal
-of making the configuration more simple and more coherent while keeping
-the needed flexibility and even adding to the flexibility in some respects.
-
-The major change that implies the configuration simplifications is at
-the heart of the id mapping system: The separation of the "idmap alloc
-system" that is responsible for the unix id counters in the tdb, tdb2
-and ldap idmap backends from the id mapping code itself has been removed.
-The sids_to_unixids operation is now atomic and encapsulates (if needed)
-the action of allocating a unix id for a mapping that is to be created.
-Consequently all idmap alloc configuration parameters have vanished and
-it is hence now also not possible any more to specify an idmap alloc
-backend different from the idmap backend. Each idmap backend uses its
-own idmap unixid creation mechanism transparently.
-
-As a consequence of the id mapping changes, the methods that are used
-for storing and deleting id mappings have been removed from the winbindd
-API. The "net idmap dump/restore" commands have been rewritten to
-not speak through winbindd any more but directly act on the databases.
-This is currently available for the tdb and tdb2 backends, the implementation
-for ldap still missing.
-
-The allocate_id functionality is preserved for the unix id creator of the
-default idmap configuration is also used as the source of unix ids
-for the group mapping database and for the posix attributes in a
-ldapsam:editposix setup.
-
-As part of the changes, the default idmap configuration has been
-changed to be more coherent with the per-domain configuration.
-The parameters "idmap uid", "idmap gid" and "idmap range" are now
-deprecated in favour of the systematic "idmap config * : range"
-and "idmap config * : backend" parameters. The reason for this change
-is that the old options only provided an incomplete and hence deceiving
-backwards compatibility, which was a source of many problems with
-updgrades. By introducing this change in configuration, it should be
-brought to the conciousness of the users that even the simple
-id mapping is not working exactly as in Samba 3.0 versions any more.
-
-
-SMB Traffic Analyzer
---------------------
-
-Added the new SMB Traffic Analyzer (SMBTA) VFS module protocol 2
-featuring encryption, multiple arguments, and easier parseability. A new
-tool 'smbta-util' has been created to control the encryption behaviour
-of SMBTA. For compatibility, SMBTA by default operates on version 1.
-There are programs consuming the data that the module sends.
-
-More information can be found on
-http://holger123.wordpress.com/smb-traffic-analyzer/
-
-
-NFS quota backend on Linux
---------------------------
-
-A new nfs quota backend for Linux has been added that is based
-on the existing Solaris/FreeBSD implementation. This allows samba
-to communicate correct diskfree information for nfs imports that
-are re-exported as samba shares.
-
-
-######################################################################
-Changes
-#######
-
-smb.conf changes
-----------------
-
- Parameter Name Description Default
- -------------- ----------- -------
-
- async smb echo handler New No
- client ntlmv2 auth Changed Default Yes
- client use spnego principal New No
- ctdb locktime warn threshold New 0
- idmap alloc backend Removed
- log writeable files on exit New No
- multicast dns register New Yes
- ncalrpc dir New
- send spnego principal New No
- smb2 max credits New 128
- smb2 max read New 1048576
- smb2 max trans New 1048576
- smb2 max write New 1048576
- strict allocate Changed Default Yes
- username map cache time New 0
- winbind max clients New 200
-
-
-######################################################################
+#######################################
Reporting bugs & Development Discussion
#######################################
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 3.6 product in the project's Bugzilla
+be filed under the Samba 4.0 product in the project's Bugzilla
database (https://bugzilla.samba.org/).
git.samba.org / kai / samba.git / blobdiff