samba - Aug 2015 - [Announce] Samba 4.3.0rc2 Available for Download

Release Announcements
====================
This is the second release candidate of Samba 4.3.  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 4.3 will be the next version of the Samba suite.


UPGRADING
========
Nothing special.


NEW FEATURES
===========
Logging
-------

The logging code now supports logging to multiple backends.  In
addition to the previously available syslog and file backends, the
backends for logging to the systemd-journal, lttng and gpfs have been
added. Please consult the section for the 'logging' parameter in the
smb.conf manpage for details.

Spotlight
---------

Support for Apple's Spotlight has been added by integrating with Gnome
Tracker.

For detailed instructions how to build and setup Samba for Spotlight,
please see the Samba wiki: <https://wiki.samba.org/index.php/Spotlight>

New FileChangeNotify subsystem
------------------------------

Samba now contains a new subsystem to do FileChangeNotify. The
previous system used a central database, notify_index.tdb, to store
all notification requests. In particular in a cluster this turned out
to be a major bottleneck, because some hot records need to be bounced
back and forth between nodes on every change event like a new created
file.

The new FileChangeNotify subsystem works with a central daemon per
node. Every FileChangeNotify request and every event are handled by an
asynchronous message from smbd to the notify daemon. The notify daemon
maintains a database of all FileChangeNotify requests in memory and
will distribute the notify events accordingly. This database is
asynchronously distributed in the cluster by the notify daemons.

The notify daemon is supposed to scale a lot better than the previous
implementation. The functional advantage is cross-node kernel change
notify: Files created via NFS will be seen by SMB clients on other
nodes per FileChangeNotify, despite the fact that popular cluster file
systems do not offer cross-node inotify.

Two changes to the configuration were required for this new subsystem:
The parameters "change notify" and "kernel change notify"
are not
per-share anymore but must be set globally. So it is no longer
possible to enable or disable notify per share, the notify daemon has
no notion of a share, it only works on absolute paths.

New SMB profiling code
----------------------

The code for SMB (SMB1, SMB2 and SMB3) profiling uses a tdb instead
of sysv IPC shared memory. This avoids performance problems and NUMA
effects. The profile stats are a bit more detailed than before.

Improved DCERPC man in the middle detection for kerberos
--------------------------------------------------------

The gssapi based kerberos backends for gensec have support for
DCERPC header signing when using DCERPC_AUTH_LEVEL_PRIVACY.

SMB signing required in winbindd by default
-------------------------------------------

The effective value for "client signing" is required
by default for winbindd, if the primary domain uses active directory.

Experimental NTDB was removed
-----------------------------

The experimental NTDB library introduced in Samba 4.0 has been
removed again.

Improved support for trusted domains (as AD DC)
-----------------------------------------------

The support for trusted domains/forests has improved a lot.

samba-tool got "domain trust" subcommands to manage trusts:

  create      - Create a domain or forest trust.
  delete      - Delete a domain trust.
  list        - List domain trusts.
  namespaces  - Manage forest trust namespaces.
  show        - Show trusted domain details.
  validate    - Validate a domain trust.

External trusts between individual domains work in both ways
(inbound and outbound). The same applies to root domains of
a forest trust. The transitive routing into the other forest
is fully functional for kerberos, but not yet supported for NTLMSSP.

While a lot of things are working fine, there are currently a few
limitations:

  - Both sides of the trust need to fully trust each other!
  - No SID filtering rules are applied at all!
  - This means DCs of domain A can grant domain admin rights
    in domain B.
  - It's not possible to add users/groups of a trusted domain
    into domain groups.

SMB 3.1.1 supported
-------------------

Both client and server have support for SMB 3.1.1 now.

This is the dialect introduced with Windows 10, it improves the secure
negotiation of SMB dialects and features.

New smbclient subcommands
-------------------------

  - Query a directory for change notifications: notify <dir name>
  - Server side copy: scopy <source filename> <destination filename>

New rpcclient subcommands
-------------------------

  netshareenumall 	- Enumerate all shares
  netsharegetinfo 	- Get Share Info
  netsharesetinfo 	- Set Share Info
  netsharesetdfsflags	- Set DFS flags
  netfileenum		- Enumerate open files
  netnamevalidate	- Validate sharename
  netfilegetsec		- Get File security
  netsessdel		- Delete Session
  netsessenum		- Enumerate Sessions
  netdiskenum		- Enumerate Disks
  netconnenum		- Enumerate Connections
  netshareadd		- Add share
  netsharedel		- Delete share

New modules
-----------

  idmap_script 		- see 'man 8 idmap_script'
  vfs_unityed_media	- see 'man 8 vfs_unityed_media'
  vfs_shell_snap	- see 'man 8 vfs_shell_snap'

New sparsely connected replia graph (Improved KCC)
--------------------------------------------------

The Knowledge Consistency Checker (KCC) maintains a replication graph
for DCs across an AD network. The existing Samba KCC uses a fully
connected graph, so that each DC replicates from all the others, which
does not scale well with large networks. In 4.3 there is an
experimental new KCC that creates a sparsely connected replication
graph and closely follows Microsoft's specification. It is turned off
by default. To use the new KCC, set "kccsrv:samba_kcc=true" in
smb.conf and let us know how it goes. You should consider doing this
if you are making a large new network. For small networks there is
little benefit and you can always switch over at a later date.

Configurable TLS protocol support, with better defaults
-------------------------------------------------------

The "tls priority" option can be used to change the supported TLS
protocols. The default is to disable SSLv3, which is no longer
considered secure.


######################################################################
Changes
#######

smb.conf changes
----------------

  Parameter Name		Description		Default
  --------------		-----------		-------
  logging			New			(empty)
  msdfs shuffle referrals	New			no
  smbd profiling level		New			off
  spotlight			New			no
  tls priority			New 			NORMAL:-VERS-SSL3.0
  use ntdb			Removed
  change notify			Changed to [global]
  kernel change notify		Changed to [global]
  client max protocol		Changed	default		SMB3_11
  server max protocol		Changed default		SMB3_11

Removed modules
---------------

vfs_notify_fam - see section 'New FileChangeNotify subsystem'.


KNOWN ISSUES
===========
Currently none.


CHANGES SINCE 4.2.0rc1
=====================
o   Jeremy Allison <jra at samba.org>
    * BUG 11359: strsep is not available on Solaris

o   Björn Baumbach <bb at sernet.de>
    * BUG 11421: Build with GPFS support is broken

o   Justin Maggard <jmaggard at netgear.com>
    * BUG 11320: "force group" with local group not working

o   Martin Schwenke <martin at meltin.net
    * BUG 11424: Build broken with --disable-python


#######################################
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 4.1 and newer" product in the project's
Bugzilla
database (https://bugzilla.samba.org/).


======================================================================= Our
Code, Our Bugs, Our Responsibility.
== The Samba Team
=====================================================================

===============Download Details
===============
The uncompressed tarballs and patch files have been signed
using GnuPG (ID 6568B7EA).  The source code can be downloaded
from:

        https://download.samba.org/pub/samba/rc/

The release notes are available online at:

        https://download.samba.org/pub/samba/rc/samba-4.3.0rc2.WHATSNEW.txt

Our Code, Our Bugs, Our Responsibility.
(https://bugzilla.samba.org/)

                        --Enjoy
                        The Samba Team


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Cool new features!

On 08/04/2015 11:19 PM, Stefan Metzmacher wrote:
> Release Announcements ====================> 
> This is the second release candidate of Samba 4.3.  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 4.3 will be the next version of the Samba suite.
> 
> 
> UPGRADING ========> 
> Nothing special.
> 
> 
> NEW FEATURES ===========> 
> Logging -------
> 
> The logging code now supports logging to multiple backends.  In 
> addition to the previously available syslog and file backends, the 
> backends for logging to the systemd-journal, lttng and gpfs have
> been added. Please consult the section for the 'logging' parameter
> in the smb.conf manpage for details.
> 
> Spotlight ---------
> 
> Support for Apple's Spotlight has been added by integrating with
> Gnome Tracker.
> 
> For detailed instructions how to build and setup Samba for
> Spotlight, please see the Samba wiki:
> <https://wiki.samba.org/index.php/Spotlight>
> 
> New FileChangeNotify subsystem ------------------------------
> 
> Samba now contains a new subsystem to do FileChangeNotify. The 
> previous system used a central database, notify_index.tdb, to
> store all notification requests. In particular in a cluster this
> turned out to be a major bottleneck, because some hot records need
> to be bounced back and forth between nodes on every change event
> like a new created file.
> 
> The new FileChangeNotify subsystem works with a central daemon per 
> node. Every FileChangeNotify request and every event are handled by
> an asynchronous message from smbd to the notify daemon. The notify
> daemon maintains a database of all FileChangeNotify requests in
> memory and will distribute the notify events accordingly. This
> database is asynchronously distributed in the cluster by the notify
> daemons.
> 
> The notify daemon is supposed to scale a lot better than the
> previous implementation. The functional advantage is cross-node
> kernel change notify: Files created via NFS will be seen by SMB
> clients on other nodes per FileChangeNotify, despite the fact that
> popular cluster file systems do not offer cross-node inotify.
> 
> Two changes to the configuration were required for this new
> subsystem: The parameters "change notify" and "kernel change
> notify" are not per-share anymore but must be set globally. So it
> is no longer possible to enable or disable notify per share, the
> notify daemon has no notion of a share, it only works on absolute
> paths.
> 
> New SMB profiling code ----------------------
> 
> The code for SMB (SMB1, SMB2 and SMB3) profiling uses a tdb
> instead of sysv IPC shared memory. This avoids performance problems
> and NUMA effects. The profile stats are a bit more detailed than
> before.
> 
> Improved DCERPC man in the middle detection for kerberos 
> --------------------------------------------------------
> 
> The gssapi based kerberos backends for gensec have support for 
> DCERPC header signing when using DCERPC_AUTH_LEVEL_PRIVACY.
> 
> SMB signing required in winbindd by default 
> -------------------------------------------
> 
> The effective value for "client signing" is required by default
for
> winbindd, if the primary domain uses active directory.
> 
> Experimental NTDB was removed -----------------------------
> 
> The experimental NTDB library introduced in Samba 4.0 has been 
> removed again.
> 
> Improved support for trusted domains (as AD DC) 
> -----------------------------------------------
> 
> The support for trusted domains/forests has improved a lot.
> 
> samba-tool got "domain trust" subcommands to manage trusts:
> 
> create      - Create a domain or forest trust. delete      - Delete
> a domain trust. list        - List domain trusts. namespaces  -
> Manage forest trust namespaces. show        - Show trusted domain
> details. validate    - Validate a domain trust.
> 
> External trusts between individual domains work in both ways 
> (inbound and outbound). The same applies to root domains of a
> forest trust. The transitive routing into the other forest is fully
> functional for kerberos, but not yet supported for NTLMSSP.
> 
> While a lot of things are working fine, there are currently a few 
> limitations:
> 
> - Both sides of the trust need to fully trust each other! - No SID
> filtering rules are applied at all! - This means DCs of domain A
> can grant domain admin rights in domain B. - It's not possible to
> add users/groups of a trusted domain into domain groups.
> 
> SMB 3.1.1 supported -------------------
> 
> Both client and server have support for SMB 3.1.1 now.
> 
> This is the dialect introduced with Windows 10, it improves the
> secure negotiation of SMB dialects and features.
> 
> New smbclient subcommands -------------------------
> 
> - Query a directory for change notifications: notify <dir name> -
> Server side copy: scopy <source filename> <destination
filename>
> 
> New rpcclient subcommands -------------------------
> 
> netshareenumall 	- Enumerate all shares netsharegetinfo 	- Get
> Share Info netsharesetinfo 	- Set Share Info netsharesetdfsflags	-
> Set DFS flags netfileenum		- Enumerate open files netnamevalidate	-
> Validate sharename netfilegetsec		- Get File security netsessdel		-
> Delete Session netsessenum		- Enumerate Sessions netdiskenum		-
> Enumerate Disks netconnenum		- Enumerate Connections netshareadd		-
> Add share netsharedel		- Delete share
> 
> New modules -----------
> 
> idmap_script 		- see 'man 8 idmap_script' vfs_unityed_media	- see
> 'man 8 vfs_unityed_media' vfs_shell_snap	- see 'man 8
> vfs_shell_snap'
> 
> New sparsely connected replia graph (Improved KCC) 
> --------------------------------------------------
> 
> The Knowledge Consistency Checker (KCC) maintains a replication
> graph for DCs across an AD network. The existing Samba KCC uses a
> fully connected graph, so that each DC replicates from all the
> others, which does not scale well with large networks. In 4.3 there
> is an experimental new KCC that creates a sparsely connected
> replication graph and closely follows Microsoft's specification. It
> is turned off by default. To use the new KCC, set
> "kccsrv:samba_kcc=true" in smb.conf and let us know how it goes.
> You should consider doing this if you are making a large new
> network. For small networks there is little benefit and you can
> always switch over at a later date.
> 
> Configurable TLS protocol support, with better defaults 
> -------------------------------------------------------
> 
> The "tls priority" option can be used to change the supported TLS
> protocols. The default is to disable SSLv3, which is no longer 
> considered secure.
> 
> 
> ######################################################################
>
> 
Changes
> #######
> 
> smb.conf changes ----------------
> 
> Parameter Name		Description		Default --------------		-----------
> ------- logging			New			(empty) msdfs shuffle referrals	New			no 
> smbd profiling level		New			off spotlight			New			no tls priority
> New 			NORMAL:-VERS-SSL3.0 use ntdb			Removed change notify
> Changed to [global] kernel change notify		Changed to [global] 
> client max protocol		Changed	default		SMB3_11 server max protocol
> Changed default		SMB3_11
> 
> Removed modules ---------------
> 
> vfs_notify_fam - see section 'New FileChangeNotify subsystem'.
> 
> 
> KNOWN ISSUES ===========> 
> Currently none.
> 
> 
> CHANGES SINCE 4.2.0rc1 =====================> 
> o   Jeremy Allison <jra at samba.org> * BUG 11359: strsep is not
> available on Solaris
> 
> o   Björn Baumbach <bb at sernet.de> * BUG 11421: Build with GPFS
> support is broken
> 
> o   Justin Maggard <jmaggard at netgear.com> * BUG 11320: "force
> group" with local group not working
> 
> o   Martin Schwenke <martin at meltin.net * BUG 11424: Build broken
> with --disable-python
> 
> 
> ####################################### 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 4.1 and newer" product
in
> the project's Bugzilla database (https://bugzilla.samba.org/).
> 
> 
> =====================================================================>
> 
== Our Code, Our Bugs, Our Responsibility.
> == The Samba Team 
> =====================================================================>
> 
> 
> ================ Download Details ===============> 
> The uncompressed tarballs and patch files have been signed using
> GnuPG (ID 6568B7EA).  The source code can be downloaded from:
> 
> https://download.samba.org/pub/samba/rc/
> 
> The release notes are available online at:
> 
> https://download.samba.org/pub/samba/rc/samba-4.3.0rc2.WHATSNEW.txt
>
>  Our Code, Our Bugs, Our Responsibility. 
> (https://bugzilla.samba.org/)
> 
> --Enjoy The Samba Team
> 
> 
> 
>