- =================================
- Release Notes for Samba 3.6.0pre1
- July 28, 2010
- =================================
+Release Announcements
+=====================
-
-This is the first preview release of Samba 3.6. This is *not*
+This is the first release candidate of Samba 4.4. 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 4.4 will be the next version of the Samba suite.
-Major enhancements in Samba 3.6.0 include:
+UPGRADING
+=========
-Changed security defaults
--------------------------
+Nothing special.
-Samba 3.6 has adopted a number of improved security defaults that will
-impact on existing users of Samba.
- client ntlmv2 auth = yes
- client use spnego principal = no
- send spnego principal = no
+NEW FEATURES/CHANGES
+====================
-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
+Asynchronous flush requests
+---------------------------
-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.
+Flush requests from SMB2/3 clients are handled asynchronously and do
+not block the processing of other requests. Note that 'strict sync'
+has to be set to 'yes' for Samba to honor flush requests from SMB
+clients.
-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.
+s3: smbd
+--------
+Remove '--with-aio-support' configure option. We no longer would ever prefer
+POSIX-RT aio, use pthread_aio instead.
-SMB2 support
-------------
+samba-tool sites
+----------------
-SMB2 support in 3.6.0 is fully functional (with one omission),
-and can be enabled by setting:
+The 'samba-tool sites' subcommand can now be run against another server by
+specifying an LDB URL using the '-H' option and not against the local database
+only (which is still the default when no URL is given).
-max protocol = SMB2
+samba-tool domain demote
+------------------------
-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.
+Add '--remove-other-dead-server' option to 'samba-tool domain demote'
+subcommand. The new version of this tool now can remove another DC that is
+itself offline. The '--remove-other-dead-server' removes as many references
+to the DC as possible.
-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.
+samba-tool drs clone-dc-database
+--------------------------------
+Replicate an initial clone of domain, but do not join it.
+This is developed for debugging purposes, but not for setting up another DC.
-Internal Winbind passdb changes
--------------------------------
+pdbedit
+-------
-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.
+Add '--set-nt-hash' option to pdbedit to update user password from nt-hash
+hexstring. 'pdbedit -vw' shows also password hashes.
+smbstatus
+---------
-New Spoolss code
-----------------
+'smbstatus' was enhanced to show the state of signing and encryption for
+sessions and shares.
+
+smbget
+------
+The -u and -p options for user and password were replaced by the -U option that
+accepts username[%password] as in many other tools of the Samba suite.
+Similary, smbgetrc files do not accept username and password options any more,
+only a single "user" option which also accepts user%password combinations.
+The -P option was removed.
+
+s4-rpc_server
+-------------
+
+Add a GnuTLS based backupkey implementation.
+
+ntlm_auth
+---------
+
+Using the '--offline-logon' enables ntlm_auth to use cached passwords when the
+DC is offline.
+
+Allow '--password' force a local password check for ntlm-server-1 mode.
-The spoolss and the old RAP printing code have been completely
-overhauled and refactored.
+vfs_offline
+-----------
-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.
+A new VFS module called vfs_offline has been added to mark all files in the
+share as offline. It can be useful for shares mounted on top of a remote file
+system (either through a samba VFS module or via FUSE).
-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.
+KCC
+---
-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.
+The Samba KCC has been improved, but is still disabled by default.
-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.
+DNS
+---
-As part of this work, new tests have been also added to increase
-coverage.
+There were several improvements concerning the Samba DNS server.
-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.
+Active Directory
+----------------
+There were some improvements in the Active Directory area.
-SMB Traffic Analyzer
+WINS nsswitch module
--------------------
-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.
+The WINS nsswitch module has been rewritten to address memory issues and to
+simplify the code. The module now uses libwbclient to do WINS queries. This
+means that winbind needs to be running in order to resolve WINS names using
+the nss_wins module. This does not affect smbd.
+
+CTDB changes
+------------
+
+* CTDB now uses a newly implemented parallel database recovery scheme
+ that avoids deadlocks with smbd.
+
+ In certain circumstances CTDB and smbd could deadlock. The new
+ recovery implementation avoid this. It also provides improved
+ recovery performance.
+
+* All files are now installed into and referred to by the paths
+ configured at build time. Therefore, CTDB will now work properly
+ when installed into the default location at /usr/local.
+
+* Public CTDB header files are no longer installed, since Samba and
+ CTDB are built from within the same source tree.
+
+* CTDB_DBDIR can now be set to tmpfs[:<tmpfs-options>]
+
+ This will cause volatile TDBs to be located in a tmpfs. This can
+ help to avoid performance problems associated with contention on the
+ disk where volatile TDBs are usually stored. See ctdbd.conf(5) for
+ more details.
+
+* Configuration variable CTDB_NATGW_SLAVE_ONLY is no longer used.
+ Instead, nodes should be annotated with the "slave-only" option in
+ the CTDB NAT gateway nodes file. This file must be consistent
+ across nodes in a NAT gateway group. See ctdbd.conf(5) for more
+ details.
-More information can be found on
-http://holger123.wordpress.com/smb-traffic-analyzer/
+* New event script 05.system allows various system resources to be
+ monitored
+ This can be helpful for explaining poor performance or unexpected
+ behaviour. New configuration variables are
+ CTDB_MONITOR_FILESYSTEM_USAGE, CTDB_MONITOR_MEMORY_USAGE and
+ CTDB_MONITOR_SWAP_USAGE. Default values cause warnings to be
+ logged. See the SYSTEM RESOURCE MONITORING CONFIGURATION in
+ ctdbd.conf(5) for more information.
-NFS quota backend on Linux
---------------------------
+ The memory, swap and filesystem usage monitoring previously found in
+ 00.ctdb and 40.fs_use is no longer available. Therefore,
+ configuration variables CTDB_CHECK_FS_USE, CTDB_MONITOR_FREE_MEMORY,
+ CTDB_MONITOR_FREE_MEMORY_WARN and CTDB_CHECK_SWAP_IS_NOT_USED are
+ now ignored.
-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.
+* The 62.cnfs eventscript has been removed. To get a similar effect
+ just do something like this:
+ mmaddcallback ctdb-disable-on-quorumLoss \
+ --command /usr/bin/ctdb \
+ --event quorumLoss --parms "disable"
-######################################################################
-Changes
-#######
+ mmaddcallback ctdb-enable-on-quorumReached \
+ --command /usr/bin/ctdb \
+ --event quorumReached --parms "enable"
+
+* The CTDB tunable parameter EventScriptTimeoutCount has been renamed
+ to MonitorTimeoutCount
+
+ It has only ever been used to limit timed-out monitor events.
+
+ Configurations containing CTDB_SET_EventScriptTimeoutCount=<n> will
+ cause CTDB to fail at startup. Useful messages will be logged.
+
+* The commandline option "-n all" to CTDB tool has been removed.
+
+ The option was not uniformly implemented for all the commands.
+ Instead of command "ctdb ip -n all", use "ctdb ip all".
+
+* All CTDB current manual pages are now correctly installed
+
+
+REMOVED FEATURES
+================
+
+Public headers
+--------------
+
+Several public headers are not installed any longer. They are made for internal
+use only. More public headers will very likely be removed in future releases.
+
+The following headers are not installed any longer:
+dlinklist.h, gen_ndr/epmapper.h, gen_ndr/mgmt.h, gen_ndr/ndr_atsvc_c.h,
+gen_ndr/ndr_epmapper_c.h, gen_ndr/ndr_epmapper.h, gen_ndr/ndr_mgmt_c.h,
+gen_ndr/ndr_mgmt.h,gensec.h, ldap_errors.h, ldap_message.h, ldap_ndr.h,
+ldap-util.h, pytalloc.h, read_smb.h, registry.h, roles.h, samba_util.h,
+smb2_constants.h, smb2_create_blob.h, smb2.h, smb2_lease.h, smb2_signing.h,
+smb_cli.h, smb_cliraw.h, smb_common.h, smb_composite.h, smb_constants.h,
+smb_raw.h, smb_raw_interfaces.h, smb_raw_signing.h, smb_raw_trans2.h,
+smb_request.h, smb_seal.h, smb_signing.h, smb_unix_ext.h, smb_util.h,
+torture.h, tstream_smbXcli_np.h.
+
+vfs_smb_traffic_analyzer
+------------------------
+
+The SMB traffic analyzer VFS module has been removed, because it is not
+maintained any longer and not widely used.
+
+vfs_scannedonly
+---------------
+
+The scannedonly VFS module has been removed, because it is not maintained
+any longer.
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 read only New No
- 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
-
-
-######################################################################
+ Parameter Name Description Default
+ -------------- ----------- -------
+ aio max threads New 100
+ ldap page size Changed default 1000
+
+
+KNOWN ISSUES
+============
+
+Currently none.
+
+#######################################
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 4.1 and newer product in the project's Bugzilla
database (https://bugzilla.samba.org/).
git.samba.org / amitay / samba.git / blobdiff