Release Announcements
=====================
-This is the first release candidate of Samba 4.4. This is *not*
+This is the first preview release of Samba 4.8. 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.
+Samba 4.8 will be the next version of the Samba suite.
UPGRADING
=========
-Nothing special.
-
NEW FEATURES/CHANGES
====================
-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.
-
-s3: smbd
---------
-
-Remove '--with-aio-support' configure option. We no longer would ever prefer
-POSIX-RT aio, use pthread_aio instead.
-
-samba-tool sites
-----------------
-
-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-tool domain demote
-------------------------
-
-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.
-
-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.
-
-pdbedit
--------
-
-Add '--set-nt-hash' option to pdbedit to update user password from nt-hash
-hexstring. 'pdbedit -vw' shows also password hashes.
-
-smbstatus
----------
-
-'smbstatus' was enhanced to show the state of signing and encryption for
-sessions and shares.
-
-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.
-
-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).
-
-KCC
----
-
-The Samba KCC has been improved, but is still disabled by default.
+Using x86_64 Accelerated AES Crypto Instructions
+================================================
-DNS
----
+Samba on x86_64 can now be configured to use the Intel accelerated AES
+instruction set, which has the potential to make SMB3 signing and
+encryption much faster on client and server. To enable this, configure
+Samba using the new option --accel-aes=intelaesni.
-There were several improvements concerning the Samba DNS server.
+This is a temporary solution that is being included to allow users
+to enjoy the benefits of Intel accelerated AES on the x86_64 platform,
+but the longer-term solution will be to move Samba to a fully supported
+external crypto library.
-Active Directory
-----------------
+The third_party/aesni-intel code will be removed from Samba as soon as
+external crypto library performance reaches parity.
-There were some improvements in the Active Directory area.
+The default is to build without setting --accel-aes, which uses the
+existing Samba software AES implementation.
-WINS nsswitch module
---------------------
+KDC GPO application
+-------------------
-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.
+Adds Group Policy support for the samba kdc. Applies password policies
+(minimum/maximum password age, minimum password length, and password
+complexity) and kerberos policies (user/service ticket lifetime and
+renew lifetime).
-CTDB changes
-------------
+Adds the samba_gpoupdate script for applying and unapplying
+policy. Can be applied automatically by setting
-* CTDB now uses a newly implemented parallel database recovery scheme
- that avoids deadlocks with smbd.
+ 'server services = +gpoupdate'.
- 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.
-
-* 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.
-
- 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.
-
-* 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"
-
- 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
+smb.conf changes
================
-Public headers
---------------
+ Parameter Name Description Default
+ -------------- ----------- -------
+ oplock contention limit Removed
-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.
+NT4-style replication based net commands removed
+================================================
-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.
+The following commands and sub-commands have been removed from the
+"net" utility:
-vfs_smb_traffic_analyzer
-------------------------
+net rpc samdump
+net rpc vampire ldif
-The SMB traffic analyzer VFS module has been removed, because it is not
-maintained any longer and not widely used.
+Also, replicating from a real NT4 domain with "net rpc vampire" and
+"net rpc vampire keytab" has been removed.
-vfs_scannedonly
----------------
+The NT4-based commands were accidentially broken in 2013, and nobody
+noticed the breakage. So instead of fixing them including tests (which
+would have meant writing a server for the protocols, which we don't
+have) we decided to remove them.
-The scannedonly VFS module has been removed, because it is not maintained
-any longer.
+For the same reason, the "samsync", "samdeltas" and "database_redo"
+commands have been removed from rpcclient.
-smb.conf changes
-----------------
+"net rpc vampire keytab" from Active Directory domains continues to be
+supported.
- Parameter Name Description Default
- -------------- ----------- -------
- aio max threads New 100
- ldap page size Changed default 1000
+vfs_aio_linux module removed
+============================
+The current Linux kernel aio does not match what Samba would
+do. Shipping code that uses it leads people to false
+assumptions. Samba implements async I/O based on threads by default,
+there is no special module required to see benefits of read and write
+request being sent do the disk in parallel.
KNOWN ISSUES
============
-Currently none.
+https://wiki.samba.org/index.php/Release_Planning_for_Samba_4.8#Release_blocking_bugs
+
#######################################
Reporting bugs & Development Discussion
git.samba.org / samba.git / blobdiff