Release Announcements
=====================
-This is the second release candidate of Samba 4.0. 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 4.0 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
-and above.
-
-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.
+Samba 4.4 will be the next version of the Samba suite.
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.
+Nothing special.
-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).
+NEW FEATURES/CHANGES
+====================
-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.
+Asynchronous flush requests
+---------------------------
+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.
-NEW FEATURES
-============
+s3: smbd
+--------
-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.
+Remove '--with-aio-support' configure option. We no longer would ever prefer
+POSIX-RT aio, use pthread_aio instead.
-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-tool sites
+----------------
-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
-default.
+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).
-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.
+samba-tool domain demote
+------------------------
-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.
+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 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.
+samba-tool drs clone-dc-database
+--------------------------------
-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.
+Replicate an initial clone of domain, but do not join it.
+This is developed for debugging purposes, but not for setting up another DC.
-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.
+pdbedit
+-------
+Add '--set-nt-hash' option to pdbedit to update user password from nt-hash
+hexstring. 'pdbedit -vw' shows also password hashes.
-CHANGES SINCE 4.0.0rc1
-======================
+smbstatus
+---------
-o Michael Adam <obnox@samba.org>
- * BUG 9173: Make the SMB2 compound request create/delete_on_close/
- close work as Windows.
+'smbstatus' was enhanced to show the state of signing and encryption for
+sessions and shares.
+s4-rpc_server
+-------------
-o Jeremy Allison <jra@samba.org>
- * BUG 9161: Re-add the vfs_Chdir() cache.
- * BUG 9189: SMB2 Create doesn't return correct MAX ACCESS access mask in
- blob.
- * BUG 9213: Bad ASN.1 NegTokenInit packet can cause invalid free.
+Add a GnuTLS based backupkey implementation.
+ntlm_auth
+---------
-o Christian Ambach <ambi@samba.org>
- * BUG 9162: Fix the build of the GPFS VFS module.
- * BUG 9197: Only do 'printing_subsystem_update' when printing is enabled.
+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.
-o Alexander Bokovoy <ab@samba.org>
- * BUG 9157: Cleanup idmap_ldap build dependencies.
+vfs_offline
+-----------
+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).
-o Ira Cooper <ira@samba.org>
- * BUG 9162: Fix build on Illumos/Solaris using '--with-acl'.
- * BUG 9173: Compound requests should continue processing.
+KCC
+---
+The Samba KCC has been improved, but is still disabled by default.
-o Björn Jacke <bj@sernet.de>
- * BUG 9162: Fix the build of the ACL VFS modules.
- * BUG 9172: Fix reporting of gfs2 quotas.
+DNS
+---
+There were several improvements concerning the Samba DNS server.
-o Volker Lendecke <vl@samba.org>
- * BUG 9217: CreateFile with FILE_DIRECTORY_FILE can create directories
- on read-only shares.
+Active Directory
+----------------
+There were some improvements in the Active Directory area.
-o Stefan Metzmacher <metze@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
- '--enable-fhs'.
- * BUG 9198: Fix RHEL-CTDB packaging.
+WINS nsswitch module
+--------------------
+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.
-o Matthieu Patou <mat@matws.net>
- * BUG 9199: Fix usage of "panic action".
+CTDB changes
+------------
+* CTDB now uses a newly implemented parallel database recovery scheme
+ that avoids deadlocks with smbd.
-o Andreas Schneider <asn@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.
+ 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.
-KNOWN ISSUES
-============
+* 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.
+
+* 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.
-- '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.
+ 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.
- 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.
+* The 62.cnfs eventscript has been removed. To get a similar effect
+ just do something like this:
-- 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.
+ mmaddcallback ctdb-disable-on-quorumLoss \
+ --command /usr/bin/ctdb \
+ --event quorumLoss --parms "disable"
-- 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.
+ mmaddcallback ctdb-enable-on-quorumReached \
+ --command /usr/bin/ctdb \
+ --event quorumReached --parms "enable"
-- 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.
+* The CTDB tunable parameter EventScriptTimeoutCount has been renamed
+ to MonitorTimeoutCount
-- Replication may fail on FreeBSD due to getaddrinfo() rejecting names
- containing _. A workaround will be in a future release.
+ It has only ever been used to limit timed-out monitor events.
-- 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.
+ Configurations containing CTDB_SET_EventScriptTimeoutCount=<n> will
+ cause CTDB to fail at startup. Useful messages will be logged.
-- Installation on systems without a system iconv (and developer
- headers at compile time) is known to cause errors when dealing with
- non-ASCII characters.
+* The commandline option "-n all" to CTDB tool has been removed.
-- 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.
+ The option was not uniformly implemented for all the commands.
+ Instead of command "ctdb ip -n all", use "ctdb ip all".
-- 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).
+* All CTDB current manual pages are now correctly installed
-- 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.
+REMOVED FEATURES
+================
+Public headers
+--------------
-RUNNING Samba 4.0 as an AD DC
-=============================
+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.
-A short guide to setting up Samba 4 as an AD DC can be found on the wiki:
+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
+ -------------- ----------- -------
+ aio max threads New 100
+ ldap page size Changed default 1000
+
+
+KNOWN ISSUES
+============
- http://wiki.samba.org/index.php/Samba4/HOWTO
+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 4.0 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 / samba.git / blobdiff