Stefan (metze) Metzmacher
2015-Jul-21 21:00 UTC
[Announce] Samba 4.3.0rc1 Available for Download
Release Announcements
---------------------
This is the first 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'
######################################################################
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.
#######################################
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 4.3 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/samba/ftp/rc/
The release notes are available online at:
https://download.samba.org/samba/ftp/rc/WHATSNEW-4.3.0rc1.txt
Our Code, Our Bugs, Our Responsibility.
(https://bugzilla.samba.org/)
--Enjoy
The Samba Team
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