4 This is the first release candidate of Samba 4.4. This is *not*
5 intended for production environments and is designed for testing
6 purposes only. Please report any defects via the Samba bug reporting
7 system at https://bugzilla.samba.org/.
9 Samba 4.4 will be the next version of the Samba suite.
21 Asynchronous flush requests
22 ---------------------------
24 Flush requests from SMB2/3 clients are handled asynchronously and do
25 not block the processing of other requests. Note that 'strict sync'
26 has to be set to 'yes' for Samba to honor flush requests from SMB
32 Remove '--with-aio-support' configure option. We no longer would ever prefer
33 POSIX-RT aio, use pthread_aio instead.
38 The 'samba-tool sites' subcommand can now be run against another server by
39 specifying an LDB URL using the '-H' option and not against the local database
40 only (which is still the default when no URL is given).
42 samba-tool domain demote
43 ------------------------
45 Add '--remove-other-dead-server' option to 'samba-tool domain demote'
46 subcommand. The new version of this tool now can remove another DC that is
47 itself offline. The '--remove-other-dead-server' removes as many references
48 to the DC as possible.
50 samba-tool drs clone-dc-database
51 --------------------------------
53 Replicate an initial clone of domain, but do not join it.
54 This is developed for debugging purposes, but not for setting up another DC.
59 Add '--set-nt-hash' option to pdbedit to update user password from nt-hash
60 hexstring. 'pdbedit -vw' shows also password hashes.
65 'smbstatus' was enhanced to show the state of signing and encryption for
71 Add a GnuTLS based backupkey implementation.
76 Using the '--offline-logon' enables ntlm_auth to use cached passwords when the
79 Allow '--password' force a local password check for ntlm-server-1 mode.
84 A new VFS module called vfs_offline has been added to mark all files in the
85 share as offline. It can be useful for shares mounted on top of a remote file
86 system (either through a samba VFS module or via FUSE).
91 The Samba KCC has been improved, but is still disabled by default.
96 There were several improvements concerning the Samba DNS server.
101 There were some improvements in the Active Directory area.
106 The WINS nsswitch module has been rewritten to address memory issues and to
107 simplify the code. The module now uses libwbclient to do WINS queries. This
108 means that winbind needs to be running in order to resolve WINS names using
109 the nss_wins module. This does not affect smbd.
114 * CTDB now uses a newly implemented parallel database recovery scheme
115 that avoids deadlocks with smbd.
117 In certain circumstances CTDB and smbd could deadlock. The new
118 recovery implementation avoid this. It also provides improved
119 recovery performance.
121 * All files are now installed into and referred to by the paths
122 configured at build time. Therefore, CTDB will now work properly
123 when installed into the default location at /usr/local.
125 * Public CTDB header files are no longer installed, since Samba and
126 CTDB are built from within the same source tree.
128 * CTDB_DBDIR can now be set to tmpfs[:<tmpfs-options>]
130 This will cause volatile TDBs to be located in a tmpfs. This can
131 help to avoid performance problems associated with contention on the
132 disk where volatile TDBs are usually stored. See ctdbd.conf(5) for
135 * Configuration variable CTDB_NATGW_SLAVE_ONLY is no longer used.
136 Instead, nodes should be annotated with the "slave-only" option in
137 the CTDB NAT gateway nodes file. This file must be consistent
138 across nodes in a NAT gateway group. See ctdbd.conf(5) for more
141 * New event script 05.system allows various system resources to be
144 This can be helpful for explaining poor performance or unexpected
145 behaviour. New configuration variables are
146 CTDB_MONITOR_FILESYSTEM_USAGE, CTDB_MONITOR_MEMORY_USAGE and
147 CTDB_MONITOR_SWAP_USAGE. Default values cause warnings to be
148 logged. See the SYSTEM RESOURCE MONITORING CONFIGURATION in
149 ctdbd.conf(5) for more information.
151 The memory, swap and filesystem usage monitoring previously found in
152 00.ctdb and 40.fs_use is no longer available. Therefore,
153 configuration variables CTDB_CHECK_FS_USE, CTDB_MONITOR_FREE_MEMORY,
154 CTDB_MONITOR_FREE_MEMORY_WARN and CTDB_CHECK_SWAP_IS_NOT_USED are
157 * The 62.cnfs eventscript has been removed. To get a similar effect
158 just do something like this:
160 mmaddcallback ctdb-disable-on-quorumLoss \
161 --command /usr/bin/ctdb \
162 --event quorumLoss --parms "disable"
164 mmaddcallback ctdb-enable-on-quorumReached \
165 --command /usr/bin/ctdb \
166 --event quorumReached --parms "enable"
168 * The CTDB tunable parameter EventScriptTimeoutCount has been renamed
169 to MonitorTimeoutCount
171 It has only ever been used to limit timed-out monitor events.
173 Configurations containing CTDB_SET_EventScriptTimeoutCount=<n> will
174 cause CTDB to fail at startup. Useful messages will be logged.
176 * The commandline option "-n all" to CTDB tool has been removed.
178 The option was not uniformly implemented for all the commands.
179 Instead of command "ctdb ip -n all", use "ctdb ip all".
181 * All CTDB current manual pages are now correctly installed
190 Several public headers are not installed any longer. They are made for internal
191 use only. More public headers will very likely be removed in future releases.
193 The following headers are not installed any longer:
194 dlinklist.h, gen_ndr/epmapper.h, gen_ndr/mgmt.h, gen_ndr/ndr_atsvc_c.h,
195 gen_ndr/ndr_epmapper_c.h, gen_ndr/ndr_epmapper.h, gen_ndr/ndr_mgmt_c.h,
196 gen_ndr/ndr_mgmt.h,gensec.h, ldap_errors.h, ldap_message.h, ldap_ndr.h,
197 ldap-util.h, pytalloc.h, read_smb.h, registry.h, roles.h, samba_util.h,
198 smb2_constants.h, smb2_create_blob.h, smb2.h, smb2_lease.h, smb2_signing.h,
199 smb_cli.h, smb_cliraw.h, smb_common.h, smb_composite.h, smb_constants.h,
200 smb_raw.h, smb_raw_interfaces.h, smb_raw_signing.h, smb_raw_trans2.h,
201 smb_request.h, smb_seal.h, smb_signing.h, smb_unix_ext.h, smb_util.h,
202 torture.h, tstream_smbXcli_np.h.
204 vfs_smb_traffic_analyzer
205 ------------------------
207 The SMB traffic analyzer VFS module has been removed, because it is not
208 maintained any longer and not widely used.
213 The scannedonly VFS module has been removed, because it is not maintained
219 Parameter Name Description Default
220 -------------- ----------- -------
221 aio max threads New 100
222 ldap page size Changed default 1000
230 #######################################
231 Reporting bugs & Development Discussion
232 #######################################
234 Please discuss this release on the samba-technical mailing list or by
235 joining the #samba-technical IRC channel on irc.freenode.net.
237 If you do report problems then please try to send high quality
238 feedback. If you don't provide vital information to help us track down
239 the problem then you will probably be ignored. All bug reports should
240 be filed under the Samba 4.1 and newer product in the project's Bugzilla
241 database (https://bugzilla.samba.org/).
244 ======================================================================
245 == Our Code, Our Bugs, Our Responsibility.
247 ======================================================================