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Signed-off-by: Martin Schwenke <martin@meltin.net> Signed-off-by: Amitay Isaacs <amitay@gmail.com> Autobuild-User(master): Amitay Isaacs <amitay@samba.org> Autobuild-Date(master): Mon Jan 25 16:47:54 CET 2016 on sn-devel-144
140 lines
4.7 KiB
Plaintext
140 lines
4.7 KiB
Plaintext
Release Announcements
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=====================
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This is the first preview release of Samba 4.4. This is *not*
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intended for production environments and is designed for testing
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purposes only. Please report any defects via the Samba bug reporting
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system at https://bugzilla.samba.org/.
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Samba 4.4 will be the next version of the Samba suite.
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UPGRADING
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=========
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Nothing special.
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NEW FEATURES
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============
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Flush requests from SMB2/3 clients are handled asynchronously and do
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not block the processing of other requests. Note that 'strict sync'
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has to be set to 'yes' for Samba to honor flush requests from SMB
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clients.
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WINS nsswitch module
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====================
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The WINS nsswitch module has been rewritten to address memory issues and to
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simplify the code. The module now uses libwbclient to do WINS queries. This
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means that winbind needs to be running in order to resolve WINS names using
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the nss_wins module. This does not affect smbd.
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######################################################################
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Changes
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#######
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smb.conf changes
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----------------
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Parameter Name Description Default
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-------------- ----------- -------
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aio max threads New 100
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CTDB changes
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------------
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* CTDB now uses a newly implemented parallel database recovery scheme
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that avoids deadlocks with smbd.
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In certain circumstances CTDB and smbd could deadlock. The new
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recovery implementation avoid this. It also provides improved
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recovery performance.
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* All files are now installed into and referred to by the paths
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configured at build time. Therefore, CTDB will now work properly
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when installed into the default location at /usr/local.
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* Public CTDB header files are no longer installed, since Samba and
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CTDB are built from within the same source tree.
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* CTDB_DBDIR can now be set to tmpfs[:<tmpfs-options>]
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This will cause volatile TDBs to be located in a tmpfs. This can
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help to avoid performance problems associated with contention on the
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disk where volatile TDBs are usually stored. See ctdbd.conf(5) for
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more details.
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* Configuration variable CTDB_NATGW_SLAVE_ONLY is no longer used.
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Instead, nodes should be annotated with the "slave-only" option in
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the CTDB NAT gateway nodes file. This file must be consistent
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across nodes in a NAT gateway group. See ctdbd.conf(5) for more
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details.
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* New event script 05.system allows various system resources to be
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monitored
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This can be helpful for explaining poor performance or unexpected
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behaviour. New configuration variables are
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CTDB_MONITOR_FILESYSTEM_USAGE, CTDB_MONITOR_MEMORY_USAGE and
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CTDB_MONITOR_SWAP_USAGE. Default values cause warnings to be
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logged. See the SYSTEM RESOURCE MONITORING CONFIGURATION in
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ctdbd.conf(5) for more information.
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The memory, swap and filesystem usage monitoring previously found in
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00.ctdb and 40.fs_use is no longer available. Therefore,
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configuration variables CTDB_CHECK_FS_USE, CTDB_MONITOR_FREE_MEMORY,
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CTDB_MONITOR_FREE_MEMORY_WARN and CTDB_CHECK_SWAP_IS_NOT_USED are
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now ignored.
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* The 62.cnfs eventscript has been removed. To get a similar effect
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just do something like this:
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mmaddcallback ctdb-disable-on-quorumLoss \
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--command /usr/bin/ctdb \
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--event quorumLoss --parms "disable"
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mmaddcallback ctdb-enable-on-quorumReached \
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--command /usr/bin/ctdb \
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--event quorumReached --parms "enable"
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* The CTDB tunable parameter EventScriptTimeoutCount has been renamed
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to MonitorTimeoutCount
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It has only ever been used to limit timed-out monitor events.
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Configurations containing CTDB_SET_EventScriptTimeoutCount=<n> will
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cause CTDB to fail at startup. Useful messages will be logged.
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* The commandline option "-n all" to CTDB tool has been removed.
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The option was not uniformly implemented for all the commands.
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Instead of command "ctdb ip -n all", use "ctdb ip all".
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* All CTDB current manual pages are now correctly installed
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KNOWN ISSUES
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============
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Currently none.
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#######################################
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Reporting bugs & Development Discussion
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#######################################
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Please discuss this release on the samba-technical mailing list or by
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joining the #samba-technical IRC channel on irc.freenode.net.
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If you do report problems then please try to send high quality
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feedback. If you don't provide vital information to help us track down
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the problem then you will probably be ignored. All bug reports should
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be filed under the Samba 4.3 product in the project's Bugzilla
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database (https://bugzilla.samba.org/).
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======================================================================
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== Our Code, Our Bugs, Our Responsibility.
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== The Samba Team
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======================================================================
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