docs-xml/Samba3-HOWTO/TOSHARG-upgrading-to-3.0.xml

   1 <?xml version="1.0" encoding="iso-8859-1"?>
   2 <!DOCTYPE chapter PUBLIC "-//Samba-Team//DTD DocBook V4.2-Based Variant V1.0//EN" "http://www.samba.org/samba/DTD/samba-doc">
   3 <chapter id="upgrading-to-3.0">
   4 <chapterinfo>
   5         &author.jelmer;
   6         &author.jht;
   7         &author.jerry;
   8         <pubdate>August 16, 2007</pubdate>
   9 </chapterinfo>
  10
  11 <title>Updating and Upgrading Samba</title>
  12 <para>
  13 This chapter provides a detailed record of changes made during the 3.x series releases. At this time this
  14 series consists of the 3.0.x series that is under the GNU GPL version 2 license, and the Samba 3.2.x series
  15 that is being released under the terms of the GNU GPL version 3 license.
  16 </para>
  17
  18 <sect1>
  19 <title>Key Update Requirements</title>
  20 <para>
  21 Samba is a fluid product in which there may be significant changes between releases. Some of these changes are
  22 brought about as a result of changes in the protocols that are used by Microsoft Windows network clients as a
  23 result of security or functionality updates through official Microsoft patches and updates. Samba must track
  24 such changes, particularly where they affect the internal operation of Samba itself.
  25 </para>
  26
  27 <para>
  28 Please refer to any notes below that make explicit mention of the version of Samba you are using. In general,
  29 all changes that apply to a new release will apply to follow-on releases also. For example, changes to Samba
  30 3.0.23 affect all releases up to an including 3.0.25 and later.  Samba 3.2.x was originaly cut from Samba
  31 3.0.25 before 3.2.0-specific changes were applied. Unless a 3.0.x series feature is specifically revoked, the
  32 behavior of the 3.2.x series can be expected to follow the earlier pattern.
  33 </para>
  34
  35 <sect2>
  36 <title>Upgrading from Samba-3.0.x to Samba-3.2.0</title>
  37 <para>
  38 </para>
  39 </sect2>
  40
  41 <sect2 id="oldupdatenotes">
  42 <title>Upgrading from Samba-2.x to Samba-3.0.25</title>
  43 <para>
  44 <indexterm><primary>Samba differences</primary></indexterm>
  45 <indexterm><primary>changed parameters</primary></indexterm>
  46 <indexterm><primary>simple guide</primary></indexterm>
  47 This chapter deals exclusively with the differences between Samba-3.0.25 and Samba-2.2.8a.
  48 It points out where configuration parameters have changed, and provides a simple guide for
  49 the move from 2.2.x to 3.0.25.
  50 </para>
  51 </sect2>
  52
  53 <sect2>
  54 <title>Quick Migration Guide</title>
  55
  56 <para>
  57 Samba-3.0.25 default behavior should be approximately the same as Samba-2.2.x.
  58 The default behavior when the new parameter <smbconfoption name="passdb backend"/>
  59 is not defined in the &smb.conf; file provides the same default behavior as Samba-2.2.x
  60 with <smbconfoption name="encrypt passwords">Yes</smbconfoption> and
  61 will use the <filename>smbpasswd</filename> database.
  62 </para>
  63
  64 <para>
  65 <indexterm><primary>behavior approximately same</primary></indexterm>
  66 <indexterm><primary>differing protocol</primary></indexterm>
  67 So why say that <emphasis>behavior should be approximately the same as Samba-2.2.x</emphasis>? Because
  68 Samba-3.0.25 can negotiate new protocols, such as support for native Unicode, that may result in
  69 differing protocol code paths being taken. The new behavior under such circumstances is not
  70 exactly the same as the old one. The good news is that the domain and machine SIDs will be
  71 preserved across the upgrade.
  72 </para>
  73
  74 <para>
  75 <indexterm><primary>LDAP backend</primary></indexterm>
  76 <indexterm><primary>database</primary></indexterm>
  77 <indexterm><primary>pdbedit</primary></indexterm>
  78 <indexterm><primary>Samba-3-compatible LDAP backend</primary></indexterm>
  79 If the Samba-2.2.x system is using an LDAP backend, and there is no time to update the LDAP
  80 database, then make sure that <smbconfoption name="passdb backend">ldapsam_compat</smbconfoption>
  81 is specified in the &smb.conf; file. For the rest, behavior should remain more or less the same.
  82 At a later date, when there is time to implement a new Samba-3-compatible LDAP backend, it is possible
  83 to migrate the old LDAP database to the new one through use of the <command>pdbedit</command>.
  84 See <link linkend="pdbeditthing">The <emphasis>pdbedit</emphasis> Command</link>.
  85 </para>
  86
  87 </sect2>
  88 </sect1>
  89
  90 <sect1>
  91 <title>New Features in Samba-3.x Series</title>
  92 <para>
  93 </para>
  94
  95 <sect2>
  96 <title>New Features in Samba-3.2.x Series</title>
  97
  98 <para>Samba is now distributed under the version 3
  99 of the new GNU General Public License.
 100 </para>
 101
 102 <para>
 103 The major new features are:
 104 </para>
 105
 106
 107 <orderedlist numeration="arabic">
 108         <listitem><para>
 109 <indexterm><primary>File Service</primary></indexterm>
 110 <indexterm><primary>limit</primary></indexterm>
 111         Removal of the 1024 byte limit on pathnames and 256 byte limit on
 112         filename components to honor the MAX_PATH setting from the host OS.
 113         </para></listitem>
 114
 115         <listitem><para>
 116 <indexterm><primary>Registory</primary></indexterm>
 117 <indexterm><primary>Configuration</primary></indexterm>
 118         Introduction of a registry based configuration system.
 119         </para></listitem>
 120
 121         <listitem><para>
 122 <indexterm><primary>cluster</primary></indexterm>
 123         Experimental support for file serving clusters.
 124         </para></listitem>
 125
 126         <listitem><para>
 127 <indexterm><primary>IPv6</primary></indexterm>
 128         Support for IPv6 in the server, and client tools and libraries.
 129         </para></listitem>
 130
 131         <listitem><para>
 132 <indexterm><primary>alternate data streams</primary></indexterm>
 133         Support for storing alternate data streams in xattrs.
 134         </para></listitem>
 135
 136         <listitem><para>
 137 <indexterm><primary>Encrypted SMB transport</primary></indexterm>
 138         Encrypted SMB transport in client tools and libraries, and server.
 139         </para></listitem>
 140
 141         <listitem><para>
 142 <indexterm><primary>Windows Vista</primary></indexterm>
 143         Support for Vista clients authenticating via Kerberos.
 144         </para></listitem>
 145
 146         <listitem><para>
 147 <indexterm><primary>Winbind</primary></indexterm>
 148 <indexterm><primary>forest</primary></indexterm>
 149         Full support for Windows 2003 cross-forest, transitive trusts
 150         and one-way domain trusts.
 151         </para></listitem>
 152
 153         <listitem><para>
 154 <indexterm><primary>pam_winbind</primary></indexterm>
 155         Support for userPrincipalName logons via pam_winbind and NSS lookups.
 156         </para></listitem>
 157
 158         <listitem><para>
 159 <indexterm><primary>LDAP</primary></indexterm>
 160 <indexterm><primary>Active Directory</primary></indexterm>
 161 <indexterm><primary>Signing</primary></indexterm>
 162         Support for Active Directory LDAP Signing policy.
 163         </para></listitem>
 164
 165         <listitem><para>
 166 <indexterm><primary>Licence</primary></indexterm>
 167 <indexterm><primary>GPL</primary></indexterm>
 168         New LGPL Winbind client library (libwbclient.so).
 169         </para></listitem>
 170
 171         <listitem><para>
 172 <indexterm><primary>domain</primary></indexterm>
 173 <indexterm><primary>domain trust</primary></indexterm>
 174         Support for establishing interdomain trust relationships with Windows 2008.
 175         </para></listitem>
 176
 177         <listitem><para>
 178 <indexterm><primary>joining</primary></indexterm>
 179         New client and server support for remotely joining and unjoining Domains.
 180         </para></listitem>
 181
 182
 183         <listitem><para>
 184 <indexterm><primary>joining</primary></indexterm>
 185         Support for joining into Windows 2008 domains.
 186         </para></listitem>
 187
 188 </orderedlist>
 189
 190 <para>
 191 Plus lots of other improvements!
 192 </para>
 193
 194
 195 </sect2>
 196
 197 <sect2>
 198 <title>New Features in Samba-3.0.x</title>
 199
 200 <para>
 201 The major new features are:
 202 </para>
 203
 204 <orderedlist numeration="arabic">
 205         <listitem><para>
 206 <indexterm><primary>ADS</primary></indexterm>
 207 <indexterm><primary>LDAP/Kerberos</primary></indexterm>
 208         Active Directory support. This release is able to join an ADS realm
 209         as a member server and authenticate users using LDAP/Kerberos.
 210         </para></listitem>
 211
 212         <listitem><para>
 213 <indexterm><primary>Unicode</primary></indexterm>
 214 <indexterm><primary>multibyte character sets</primary></indexterm>
 215         Unicode support. Samba will now negotiate Unicode on the wire, and
 216         internally there is a much better infrastructure for multibyte
 217         and Unicode character sets.
 218         </para></listitem>
 219
 220         <listitem><para>
 221 <indexterm><primary>authentication system</primary></indexterm>
 222         New authentication system. The internal authentication system has
 223         been almost completely rewritten. Most of the changes are internal,
 224         but the new authoring system is also very configurable.
 225         </para></listitem>
 226
 227         <listitem><para>
 228 <indexterm><primary>filename mangling</primary></indexterm>
 229         New filename mangling system. The filename mangling system has been
 230         completely rewritten. An internal database now stores mangling maps
 231         persistently.
 232         </para></listitem>
 233
 234         <listitem><para>
 235 <indexterm><primary>net command</primary></indexterm>
 236         New <quote>net</quote> command. A new <quote>net</quote> command has been added. It is
 237         somewhat similar to the <quote>net</quote> command in Windows. Eventually, we
 238         plan to replace a bunch of other utilities (such as smbpasswd)
 239         with subcommands in <quote>net</quote>.
 240         </para></listitem>
 241
 242         <listitem><para>
 243 <indexterm><primary>status32 codes</primary></indexterm>
 244         Samba now negotiates NT-style status32 codes on the wire. This
 245         considerably improves error handling.
 246         </para></listitem>
 247
 248         <listitem><para>
 249 <indexterm><primary>printer attributes publishing</primary></indexterm>
 250         Better Windows 200x/XP printing support, including publishing
 251         printer attributes in Active Directory.
 252         </para></listitem>
 253
 254         <listitem><para>
 255 <indexterm><primary>RPC modules</primary></indexterm>
 256 <indexterm><primary>passdb backends</primary></indexterm>
 257 <indexterm><primary>character sets</primary></indexterm>
 258         New loadable RPC modules for passdb backends and character sets.
 259         </para></listitem>
 260
 261         <listitem><para>
 262 <indexterm><primary>dual-daemon winbindd</primary></indexterm>
 263         New default dual-daemon winbindd support for better performance.
 264         </para></listitem>
 265
 266         <listitem><para>
 267 <indexterm><primary>migrating</primary></indexterm>
 268 <indexterm><primary>maintaining ids</primary></indexterm>
 269 <indexterm><primary>SID</primary></indexterm>
 270         Support for migrating from a Windows NT 4.0 domain to a Samba
 271         domain and maintaining user, group, and domain SIDs.
 272         </para></listitem>
 273
 274         <listitem><para>
 275 <indexterm><primary>trust relationships</primary></indexterm>
 276 <indexterm><primary>domain controllers</primary></indexterm>
 277         Support for establishing trust relationships with Windows NT 4.0
 278         domain controllers.
 279         </para></listitem>
 280
 281         <listitem><para>
 282 <indexterm><primary>Winbind architecture</primary></indexterm>
 283 <indexterm><primary>LDAP directory</primary></indexterm>
 284 <indexterm><primary>ID mapping</primary></indexterm>
 285         Initial support for a distributed Winbind architecture using
 286         an LDAP directory for storing SID to UID/GID mappings.
 287         </para></listitem>
 288
 289         <listitem><para>
 290         Major updates to the Samba documentation tree.
 291         </para></listitem>
 292
 293         <listitem><para>
 294 <indexterm><primary>SMB signing</primary></indexterm>
 295 <indexterm><primary>security settings</primary></indexterm>
 296         Full support for client and server SMB signing to ensure
 297         compatibility with default Windows 2003 security settings.
 298         </para></listitem>
 299 </orderedlist>
 300
 301 <para>
 302 Plus lots of other improvements!
 303 </para>
 304
 305
 306 <sect3>
 307 <title>Configuration Parameter Changes</title>
 308
 309 <para>
 310 This section contains a brief listing of changes to &smb.conf; options since the Samba-2.2.x series up to and
 311 including Samba-3.0.25.
 312 </para>
 313
 314 <para>
 315 Please refer to the smb.conf(5) man page for complete descriptions of new or modified
 316 parameters.
 317 </para>
 318
 319 <para>
 320 Whenever a Samba update or upgrade is performed it is highly recommended to read the file called
 321 <emphasis>WHATSNEW.txt</emphasis> that is part of the Samba distribution tarball. This file may also
 322 be obtain on-line from the Samba <ulink url="http://www.samba.org/samba/">web site</ulink>, in
 323 the right column, under Current Stable Release, by clicking on <emphasis>Release Notes</emphasis>.
 324 </para>
 325
 326 </sect3>
 327
 328 <sect3>
 329 <title>Removed Parameters</title>
 330
 331 <indexterm><primary>deleted parameters</primary></indexterm>
 332 <para>
 333 In alphabetical order, these are the parameters eliminated from Samba-2.2.x through 3.0.25.
 334 </para>
 335
 336 <itemizedlist>
 337         <listitem><para>admin log</para></listitem>
 338         <listitem><para>alternate permissions</para></listitem>
 339         <listitem><para>character set</para></listitem>
 340         <listitem><para>client codepage</para></listitem>
 341         <listitem><para>code page directory</para></listitem>
 342         <listitem><para>coding system</para></listitem>
 343         <listitem><para>domain admin group</para></listitem>
 344         <listitem><para>domain guest group</para></listitem>
 345         <listitem><para>enable rid algorithm</para></listitem>
 346         <listitem><para>enable svcctl</para></listitem>
 347         <listitem><para>force unknown acl user</para></listitem>
 348         <listitem><para>hosts equiv</para></listitem>
 349         <listitem><para>ldap filter</para></listitem>
 350         <listitem><para>min password length</para></listitem>
 351         <listitem><para>nt smb support</para></listitem>
 352         <listitem><para>post script</para></listitem>
 353         <listitem><para>printer admin</para></listitem>
 354         <listitem><para>printer driver</para></listitem>
 355         <listitem><para>printer driver file</para></listitem>
 356         <listitem><para>printer driver location</para></listitem>
 357         <listitem><para>read size</para></listitem>
 358         <listitem><para>source environment</para></listitem>
 359         <listitem><para>status </para></listitem>
 360         <listitem><para>strip dot </para></listitem>
 361         <listitem><para>total print jobs</para></listitem>
 362         <listitem><para>unicode</para></listitem>
 363         <listitem><para>use rhosts</para></listitem>
 364         <listitem><para>valid chars</para></listitem>
 365         <listitem><para>vfs options</para></listitem>
 366         <listitem><para>winbind enable local accounts</para></listitem>
 367         <listitem><para>winbind max idle children</para></listitem>
 368         <listitem><para>wins partners</para></listitem>
 369 </itemizedlist>
 370
 371 </sect3>
 372
 373 <sect3>
 374 <title>New Parameters</title>
 375
 376 <para>The following new parameters have been released up to and including Samba 3.0.25 (grouped by function:)</para>
 377
 378 <para>Remote Management</para>
 379
 380 <indexterm><primary>new parameters</primary></indexterm>
 381
 382 <itemizedlist>
 383         <listitem><para>abort shutdown script</para></listitem>
 384         <listitem><para>shutdown script</para></listitem>
 385 </itemizedlist>
 386
 387 <para>User and Group Account Management</para>
 388
 389 <itemizedlist>
 390         <listitem><para>add group script</para></listitem>
 391         <listitem><para>add machine script</para></listitem>
 392         <listitem><para>add user to group script</para></listitem>
 393         <listitem><para>algorithmic rid base</para></listitem>
 394         <listitem><para>delete group script</para></listitem>
 395         <listitem><para>delete user from group script</para></listitem>
 396         <listitem><para>passdb backend</para></listitem>
 397         <listitem><para>rename user script</para></listitem>
 398         <listitem><para>set primary group script</para></listitem>
 399         <listitem><para>username map script</para></listitem>
 400 </itemizedlist>
 401
 402 <para>Authentication</para>
 403
 404 <itemizedlist>
 405         <listitem><para>auth methods</para></listitem>
 406         <listitem><para>ldap password sync</para></listitem>
 407         <listitem><para>passdb expand explicit</para></listitem>
 408         <listitem><para>realm</para></listitem>
 409 </itemizedlist>
 410
 411 <para>Protocol Options</para>
 412
 413 <itemizedlist>
 414         <listitem><para>add port command</para></listitem>
 415         <listitem><para>afs token lifetime</para></listitem>
 416         <listitem><para>client lanman auth</para></listitem>
 417         <listitem><para>client NTLMv2 auth</para></listitem>
 418         <listitem><para>client schannel</para></listitem>
 419         <listitem><para>client signing</para></listitem>
 420         <listitem><para>client use spnego</para></listitem>
 421         <listitem><para>defer sharing violations</para></listitem>
 422         <listitem><para>disable netbios</para></listitem>
 423         <listitem><para>dmapi support</para></listitem>
 424         <listitem><para>enable privileges</para></listitem>
 425         <listitem><para>use kerberos keytab</para></listitem>
 426         <listitem><para>log nt token command</para></listitem>
 427         <listitem><para>ntlm auth</para></listitem>
 428         <listitem><para>paranoid server security </para></listitem>
 429         <listitem><para>sendfile</para></listitem>
 430         <listitem><para>server schannel</para></listitem>
 431         <listitem><para>server signing</para></listitem>
 432         <listitem><para>smb ports</para></listitem>
 433         <listitem><para>svcctl list</para></listitem>
 434         <listitem><para>use spnego</para></listitem>
 435 </itemizedlist>
 436
 437 <para>File Service</para>
 438
 439 <itemizedlist>
 440         <listitem><para>allocation roundup size</para></listitem>
 441         <listitem><para>acl check permissions</para></listitem>
 442         <listitem><para>acl group control</para></listitem>
 443         <listitem><para>acl map full control</para></listitem>
 444         <listitem><para>aio read size</para></listitem>
 445         <listitem><para>aio write size</para></listitem>
 446         <listitem><para>dfree cache time</para></listitem>
 447         <listitem><para>dfree command</para></listitem>
 448         <listitem><para>ea support</para></listitem>
 449         <listitem><para>enable asu support</para></listitem>
 450         <listitem><para>fam change notify</para></listitem>
 451         <listitem><para>force unknown acl user</para></listitem>
 452         <listitem><para>get quota command</para></listitem>
 453         <listitem><para>hide special files</para></listitem>
 454         <listitem><para>hide unwriteable files</para></listitem>
 455         <listitem><para>inherit owner</para></listitem>
 456         <listitem><para>hostname lookups</para></listitem>
 457         <listitem><para>kernel change notify</para></listitem>
 458         <listitem><para>mangle prefix</para></listitem>
 459         <listitem><para>map acl inherit</para></listitem>
 460         <listitem><para>map read only</para></listitem>
 461         <listitem><para>max stat cache size</para></listitem>
 462         <listitem><para>msdfs proxy</para></listitem>
 463         <listitem><para>open files database hash size</para></listitem>
 464         <listitem><para>set quota command</para></listitem>
 465         <listitem><para>store dos attributes</para></listitem>
 466         <listitem><para>use sendfile</para></listitem>
 467         <listitem><para>usershare allow guests</para></listitem>
 468         <listitem><para>usershare max shares</para></listitem>
 469         <listitem><para>usershare owner only</para></listitem>
 470         <listitem><para>usershare path</para></listitem>
 471         <listitem><para>usershare prefix allow list</para></listitem>
 472         <listitem><para>usershare prefix deny list</para></listitem>
 473         <listitem><para>usershare template share</para></listitem>
 474         <listitem><para>vfs objects</para></listitem>
 475 </itemizedlist>
 476
 477 <para>Printing</para>
 478
 479 <itemizedlist>
 480         <listitem><para>cups options</para></listitem>
 481         <listitem><para>cups server</para></listitem>
 482         <listitem><para>force printername</para></listitem>
 483         <listitem><para>iprint server</para></listitem>
 484         <listitem><para>max reported print jobs</para></listitem>
 485         <listitem><para>printcap cache time</para></listitem>
 486 </itemizedlist>
 487
 488
 489 <para>Unicode and Character Sets</para>
 490
 491 <itemizedlist>
 492         <listitem><para>display charset</para></listitem>
 493         <listitem><para>dos charset</para></listitem>
 494         <listitem><para>UNIX charset</para></listitem>
 495 </itemizedlist>
 496
 497 <para>SID to UID/GID Mappings</para>
 498
 499 <itemizedlist>
 500         <listitem><para>idmap backend</para></listitem>
 501         <listitem><para>idmap gid</para></listitem>
 502         <listitem><para>idmap uid</para></listitem>
 503         <listitem><para>username map script</para></listitem>
 504         <listitem><para>winbind nss info</para></listitem>
 505         <listitem><para>winbind offline logon</para></listitem>
 506         <listitem><para>winbind refresh tickets</para></listitem>
 507         <listitem><para>winbind trusted domains only</para></listitem>
 508         <listitem><para>template primary group</para></listitem>
 509 </itemizedlist>
 510
 511 <para>LDAP</para>
 512
 513 <itemizedlist>
 514         <listitem><para>ldap delete dn</para></listitem>
 515         <listitem><para>ldap group suffix</para></listitem>
 516         <listitem><para>ldap idmap suffix</para></listitem>
 517         <listitem><para>ldap machine suffix</para></listitem>
 518         <listitem><para>ldap passwd sync</para></listitem>
 519         <listitem><para>ldap replication sleep</para></listitem>
 520         <listitem><para>ldap timeout</para></listitem>
 521         <listitem><para>ldap user suffix</para></listitem>
 522 </itemizedlist>
 523
 524 <para>General Configuration</para>
 525
 526 <itemizedlist>
 527         <listitem><para>eventlog list</para></listitem>
 528         <listitem><para>preload modules</para></listitem>
 529         <listitem><para>reset on zero vc</para></listitem>
 530         <listitem><para>privatedir</para></listitem>
 531 </itemizedlist>
 532
 533 </sect3>
 534
 535 <sect3>
 536 <title>Modified Parameters (Changes in Behavior)</title>
 537
 538 <itemizedlist>
 539         <listitem><para>acl group control (new default is No, deprecated parameter)</para></listitem>
 540         <listitem><para>change notify timeout (scope changed)</para></listitem>
 541         <listitem><para>dos filemode (disabled by default)</para></listitem>
 542         <listitem><para>dos filetimes (enabled by default)</para></listitem>
 543         <listitem><para>enable asu support (disabled by default)</para></listitem>
 544         <listitem><para>enable privileges (enabled by default)</para></listitem>
 545         <listitem><para>encrypt passwords (enabled by default) </para></listitem>
 546         <listitem><para>host msdfs (enabled by default)</para></listitem>
 547         <listitem><para>mangling method (set to hash2 by default) </para></listitem>
 548         <listitem><para>map to guest</para></listitem>
 549         <listitem><para>only user (deprecated)</para></listitem>
 550         <listitem><para>passwd chat</para></listitem>
 551         <listitem><para>passwd program</para></listitem>
 552         <listitem><para>password server</para></listitem>
 553         <listitem><para>restrict anonymous (integer value)</para></listitem>
 554         <listitem><para>security (new ads value)</para></listitem>
 555         <listitem><para>strict locking (auto by default)</para></listitem>
 556         <listitem><para>winbind cache time (increased to 5 minutes)</para></listitem>
 557         <listitem><para>winbind enum groups (disabled by default)</para></listitem>
 558         <listitem><para>winbind enum users (disabled by default)</para></listitem>
 559         <listitem><para>winbind nested groups (enabled by default)</para></listitem>
 560         <listitem><para>winbind uid (deprecated in favor of idmap uid)</para></listitem>
 561         <listitem><para>winbind gid (deprecated in favor of idmap gid)</para></listitem>
 562         <listitem><para>winbindd nss info</para></listitem>
 563         <listitem><para>write cache (deprecated)</para></listitem>
 564 </itemizedlist>
 565
 566 </sect3>
 567
 568 </sect2>
 569
 570 <sect2>
 571 <title>New Functionality</title>
 572
 573         <para>
 574 <indexterm><primary>major changes</primary></indexterm>
 575         The major changes in behavior since that Samba-2.2.x series are documented in this section.
 576         Please refer to the <filename>WHATSNEW.txt</filename> file that ships with every release of
 577         Samba to obtain detailed information regarding the changes that have been made during the
 578         life of the current Samba release.
 579         </para>
 580
 581         <sect3>
 582         <title>TDB Data Files</title>
 583
 584 <indexterm><primary>tdb data files</primary></indexterm>
 585         <para>
 586         Refer to <link linkend="install">Installation, Chapter 1</link>, <link linkend="tdbdocs">Chapter 1</link>
 587         for information pertaining to the Samba-3 data files, their location and the information that must be
 588         preserved across server migrations, updates and upgrades.
 589         </para>
 590
 591         <para>
 592 <indexterm><primary>tdb file backup</primary></indexterm>
 593         Please remember to back up your existing ${lock directory}/*tdb before upgrading to Samba-3. If necessary,
 594         Samba will upgrade databases as they are opened. Downgrading from Samba-3 to 2.2, or reversion to an earlier
 595         version of Samba-3 from a later release, is an unsupported path.
 596         </para>
 597
 598         <para>
 599 <indexterm><primary>tdb file descriptions</primary></indexterm>
 600         The old Samba-2.2.x tdb files are described in <link linkend="oldtdbfiledesc">the next table</link>.
 601         </para>
 602
 603
 604         <table frame='all' id="oldtdbfiledesc"><title>Samba-2.2.x TDB File Descriptions</title>
 605         <tgroup cols='3'>
 606                         <colspec align="left"/>
 607                         <colspec align="justify" colwidth="1*"/>
 608                         <colspec align="left"/>
 609                 <thead>
 610                 <row>
 611                         <entry align="left">Name</entry>
 612                         <entry align="justify">Description</entry>
 613                         <entry align="center">Backup?</entry>
 614                 </row>
 615                 </thead>
 616                 <tbody>
 617                 <row>
 618                         <entry>account_policy</entry>
 619                         <entry>User policy settings</entry>
 620                         <entry>yes</entry>
 621                 </row>
 622                 <row>
 623                         <entry>brlock</entry>
 624                         <entry>Byte-range file locking information.</entry>
 625                         <entry>no</entry>
 626                 </row>
 627                 <row>
 628                         <entry>connections</entry>
 629                         <entry><para>Client connection information</para></entry>
 630                         <entry>no</entry>
 631                 </row>
 632                 <row>
 633                         <entry>locking</entry>
 634                         <entry>Temporary file locking data.</entry>
 635                         <entry>no</entry>
 636                 </row>
 637                 <row>
 638                         <entry>messages</entry>
 639                         <entry><para>Temporary storage of messages being processed by smbd.</para></entry>
 640                         <entry>no</entry>
 641                 </row>
 642        <row>
 643             <entry>ntdrivers</entry>
 644             <entry><para>Stores per-printer driver information.</para></entry>
 645                         <entry>yes</entry>
 646         </row>
 647         <row>
 648             <entry>ntforms</entry>
 649             <entry><para>Stores per-printer forms information.</para></entry>
 650                         <entry>yes</entry>
 651         </row>
 652         <row>
 653             <entry>ntprinters</entry>
 654             <entry><para>Stores the per-printer devmode configuration settings.</para></entry>
 655                         <entry>yes</entry>
 656         </row>
 657                 <row>
 658                         <entry>printing/*.tdb</entry>
 659                         <entry><para>Cached output from lpq command created on a per-print-service basis.</para></entry>
 660                         <entry>no</entry>
 661                 </row>
 662                 <row>
 663
 664                         <entry>registry</entry>
 665                         <entry><para>Read-only Samba registry skeleton that provides support for
 666                                 exporting various database tables via the winreg RPCs.</para></entry>
 667                         <entry>no</entry>
 668                 </row>
 669                 <row>
 670                         <entry>sessionid</entry>
 671                         <entry><para>Temporary cache for miscellaneous session information.</para></entry>
 672                         <entry>no</entry>
 673                 </row>
 674                 <row>
 675                         <entry>share_info</entry>
 676                         <entry>Share ACL settings.</entry>
 677                         <entry>yes</entry>
 678                 </row>
 679                 <row>
 680
 681                         <entry>unexpected</entry>
 682                         <entry><para>Packets received for which no process was listening.</para></entry>
 683                         <entry>no</entry>
 684                 </row>
 685                 <row>
 686                         <entry>winbindd_cache</entry>
 687                         <entry><para>Cache of identity information received from an NT4 or an ADS domain.</para></entry>
 688                         <entry>yes</entry>
 689                 </row>
 690                 <row>
 691                         <entry>winbindd_idmap</entry>
 692                         <entry><para>New ID map table from SIDS to UNIX UIDs/GIDs.</para></entry>
 693                         <entry>yes</entry>
 694                 </row>
 695                 </tbody>
 696         </tgroup>
 697         </table>
 698
 699         </sect3>
 700
 701         <sect3>
 702         <title>Changes in Behavior</title>
 703
 704         <para>
 705         The following issues are known changes in behavior between Samba-2.2 and
 706         Samba-3 that may affect certain installations of Samba.
 707         </para>
 708
 709         <orderedlist>
 710                 <listitem><para>
 711 <indexterm><primary>Windows domain</primary></indexterm>
 712 <indexterm><primary>getpwnam() call</primary></indexterm>
 713 <indexterm><primary>NT_STATUS_LOGON_FAILURE</primary></indexterm>
 714                 When operating as a member of a Windows domain, Samba-2.2 would map any users authenticated by the remote DC
 715                 to the <quote>guest account</quote> if a UID could not be obtained via the getpwnam() call. Samba-3 rejects
 716                 the connection with the error message <quote>NT_STATUS_LOGON_FAILURE.</quote> There is no current workaround
 717                 to re-establish the Samba-2.2 behavior.
 718                 </para></listitem>
 719
 720                 <listitem><para>
 721 <indexterm><primary>add user script</primary></indexterm>
 722 <indexterm><primary>add machine script</primary></indexterm>
 723                 When adding machines to a Samba-2.2 controlled domain, the
 724                 <quote>add user script</quote> was used to create the UNIX identity of the
 725                 machine trust account. Samba-3 introduces a new <quote>add machine
 726                 script</quote> that must be specified for this purpose. Samba-3 will
 727                 not fall back to using the <quote>add user script</quote> in the absence of
 728                 an <quote>add machine script</quote>.
 729                 </para></listitem>
 730         </orderedlist>
 731
 732         </sect3>
 733
 734         <sect3>
 735         <title>Passdb Backends and Authentication</title>
 736
 737         <para>
 738         There have been a few new changes that Samba administrators should be
 739         aware of when moving to Samba-3.
 740         </para>
 741
 742         <orderedlist>
 743                 <listitem><para>
 744 <indexterm><primary>encrypted passwords</primary></indexterm>
 745                 Encrypted passwords have been enabled by default in order to
 746                 interoperate better with out-of-the-box Windows client
 747                 installations. This does mean that either (a) a Samba account
 748                 must be created for each user, or (b) <quote>encrypt passwords = no</quote>
 749                 must be explicitly defined in &smb.conf;.
 750                 </para></listitem>
 751
 752                 <listitem><para>
 753 <indexterm><primary>ADS</primary></indexterm>
 754 <indexterm><primary>Kerberos</primary></indexterm>
 755 <indexterm><primary>LDAP</primary></indexterm>
 756                 Inclusion of new <smbconfoption name="security">ads</smbconfoption> option for integration
 757                 with an Active Directory domain using the native Windows Kerberos 5 and LDAP protocols.
 758                 </para></listitem>
 759         </orderedlist>
 760
 761         <para>
 762 <indexterm><primary>account storage backends</primary></indexterm>
 763         Samba-3 also includes the possibility of setting up chains of authentication methods (<smbconfoption
 764         name="auth methods"/>) and account storage backends (<smbconfoption name="passdb backend"/>).  Please refer to
 765         the &smb.conf; man page and <link linkend="passdb">Account Information Databases</link>, for
 766         details. While both parameters assume sane default values, it is likely that you will need to understand what
 767         the values actually mean in order to ensure Samba operates correctly.
 768         </para>
 769
 770         <para>
 771 <indexterm><primary>pdbedit</primary></indexterm>
 772 <indexterm><primary>smbpasswd</primary></indexterm>
 773 <indexterm><primary>net tool</primary></indexterm>
 774         Certain functions of the <command>smbpasswd</command> tool have been split between the
 775         new <command>smbpasswd</command> utility, the <command>net</command> tool, and the new <command>pdbedit</command>
 776         utility. See the respective man pages for details.
 777         </para>
 778
 779         </sect3>
 780
 781         <sect3>
 782         <title>LDAP</title>
 783
 784         <para>
 785         This section outlines the new features effecting Samba/LDAP integration.
 786         </para>
 787
 788                 <sect4>
 789                 <title>New Schema</title>
 790
 791                 <para>
 792 <indexterm><primary>object class</primary></indexterm>
 793 <indexterm><primary>sambaSamAccount</primary></indexterm>
 794 <indexterm><primary>LDIF</primary></indexterm>
 795 <indexterm><primary>attributes</primary></indexterm>
 796                 A new object class (sambaSamAccount) has been introduced to replace
 797                 the old sambaAccount. This change aids in the renaming of attributes
 798                 to prevent clashes with attributes from other vendors. There is a
 799                 conversion script (examples/LDAP/convertSambaAccount) to modify an LDIF
 800                 file to the new schema.
 801                 </para>
 802
 803                 <para>
 804                 Example:
 805 <indexterm><primary>ldapsearch</primary></indexterm>
 806                 </para>
 807                 <para><screen>
 808                 &prompt;ldapsearch .... -LLL -b "ou=people,dc=..." &gt; old.ldif
 809                 &prompt;convertSambaAccount --sid &lt;DOM SID&gt; --input old.ldif --output new.ldif
 810                 </screen></para>
 811
 812                 <para>
 813 <indexterm><primary>net</primary><secondary>getlocalsid</secondary></indexterm>
 814                 The &lt;DOM SID&gt; can be obtained by running
 815 <screen>
 816 &prompt;<userinput>net getlocalsid &lt;DOMAINNAME&gt;</userinput>
 817 </screen>
 818 <indexterm><primary>PDC</primary></indexterm>
 819                 on the Samba PDC as root.
 820                 </para>
 821
 822                 <para>
 823                 Under Samba-2.x the domain SID can be obtained by executing:
 824 <indexterm><primary>smbpasswd</primary></indexterm>
 825 <screen>
 826 &prompt;<userinput>smbpasswd -S &lt;DOMAINNAME&gt;</userinput>
 827 </screen>
 828                 </para>
 829
 830                 <para>
 831 <indexterm><primary>old sambaAccount</primary></indexterm>
 832 <indexterm><primary>ldapsam_compat</primary></indexterm>
 833 <indexterm><primary>object class declaration</primary></indexterm>
 834 <indexterm><primary>samba.schema</primary></indexterm>
 835                 The old <literal>sambaAccount</literal> schema may still be used by specifying the
 836                 <parameter>ldapsam_compat</parameter> passdb backend. However, the sambaAccount and
 837                 associated attributes have been moved to the historical section of
 838                 the schema file and must be uncommented before use if needed.
 839                 The Samba-2.2 object class declaration for a <literal>sambaAccount</literal> has not changed
 840                 in the Samba-3 <filename>samba.schema</filename> file.
 841                 </para>
 842
 843                 <para>
 844                 Other new object classes and their uses include:
 845                 </para>
 846
 847                 <itemizedlist>
 848                         <listitem><para>
 849 <indexterm><primary>sambaDomain</primary></indexterm>
 850 <indexterm><primary>domain information</primary></indexterm>
 851 <indexterm><primary>RID</primary></indexterm>
 852 <indexterm><primary>ldap suffix</primary></indexterm>
 853 <indexterm><primary>ldapsam</primary></indexterm>
 854 <indexterm><primary>idmap</primary></indexterm>
 855                         <literal>sambaDomain</literal> &smbmdash; domain information used to allocate RIDs
 856                         for users and groups as necessary. The attributes are added
 857                         in <quote>ldap suffix</quote> directory entry automatically if
 858                         an idmap UID/GID range has been set and the <quote>ldapsam</quote>
 859                         passdb backend has been selected.
 860                         </para></listitem>
 861
 862                         <listitem><para>
 863 <indexterm><primary>sambaGroupMapping</primary></indexterm>
 864 <indexterm><primary>ldap group suffix</primary></indexterm>
 865 <indexterm><primary>net groupmap</primary></indexterm>
 866                         sambaGroupMapping &smbmdash; an object representing the
 867                         relationship between a posixGroup and a Windows
 868                         group/SID. These entries are stored in the <quote>ldap
 869                         group suffix</quote> and managed by the <quote>net groupmap</quote> command.
 870                         </para></listitem>
 871
 872                         <listitem><para>
 873 <indexterm><primary>sambaUNIXIdPool</primary></indexterm>
 874 <indexterm><primary>ldap idmap suffix</primary></indexterm>
 875 <indexterm><primary>idmap UID</primary></indexterm>
 876 <indexterm><primary>idmap GID</primary></indexterm>
 877                         <literal>sambaUNIXIdPool</literal> &smbmdash; created in the <quote>ldap idmap suffix</quote> entry
 878                         automatically and contains the next available <quote>idmap UID</quote> and
 879                         <quote>idmap GID</quote>.
 880                         </para></listitem>
 881
 882                         <listitem><para>
 883 <indexterm><primary>sambaIdmapEntry</primary></indexterm>
 884 <indexterm><primary>idmap_ldap module</primary></indexterm>
 885                         <literal>sambaIdmapEntry</literal> &smbmdash; object storing a mapping between a
 886                         SID and a UNIX UID/GID. These objects are created by the
 887                         idmap_ldap module as needed.
 888                         </para></listitem>
 889                 </itemizedlist>
 890
 891                 </sect4>
 892
 893                 <sect4>
 894                 <title>New Suffix for Searching</title>
 895
 896                 <para>
 897 <indexterm><primary>LDAP queries</primary></indexterm>
 898 <indexterm><primary>passdb backend</primary></indexterm>
 899 <indexterm><primary>ldap suffix</primary></indexterm>
 900 <indexterm><primary>ldap user suffix</primary></indexterm>
 901 <indexterm><primary>ldap machine suffix</primary></indexterm>
 902 <indexterm><primary>ldap group suffix</primary></indexterm>
 903 <indexterm><primary>ldap idmap suffix</primary></indexterm>
 904                 The following new &smb.conf; parameters have been added to aid in directing
 905                 certain LDAP queries when <parameter>passdb backend = ldapsam://...</parameter> has been
 906                 specified.
 907                 </para>
 908
 909                 <itemizedlist>
 910                         <listitem><para>ldap suffix         &smbmdash; used to search for user and computer accounts.</para></listitem>
 911                         <listitem><para>ldap user suffix    &smbmdash; used to store user accounts.</para></listitem>
 912                         <listitem><para>ldap machine suffix &smbmdash; used to store machine trust accounts.</para></listitem>
 913                         <listitem><para>ldap group suffix   &smbmdash; location of posixGroup/sambaGroupMapping entries.</para></listitem>
 914                         <listitem><para>ldap idmap suffix   &smbmdash; location of sambaIdmapEntry objects.</para></listitem>
 915                 </itemizedlist>
 916
 917                 <para>
 918 <indexterm><primary>ldap suffix</primary></indexterm>
 919 <indexterm><primary>subsuffix parameters</primary></indexterm>
 920                 If an <parameter>ldap suffix</parameter> is defined, it will be appended to all of the
 921                 remaining subsuffix parameters. In this case, the order of the suffix
 922                 listings in &smb.conf; is important. Always place the <parameter>ldap suffix</parameter> first
 923                 in the list.
 924                 </para>
 925
 926                 <para>
 927                 Due to a limitation in Samba's &smb.conf; parsing, you should not surround
 928                 the domain names with quotation marks.
 929                 </para>
 930
 931                 </sect4>
 932
 933                 <sect4>
 934                 <title>IdMap LDAP Support</title>
 935
 936                 <para>
 937 <indexterm><primary>idmap backend</primary></indexterm>
 938                 Samba-3 supports an LDAP backend for the idmap subsystem. The
 939                 following options inform Samba that the idmap table should be
 940                 stored on the directory server <emphasis>onterose</emphasis> in the ou=Idmap,dc=quenya,dc=org partition.
 941                 </para>
 942
 943                 <smbconfblock>
 944                 <smbconfsection name="[global]"/>
 945                 <member>...</member>
 946                 <smbconfoption name="idmap backend">ldap:ldap://onterose/</smbconfoption>
 947                 <smbconfoption name="ldap idmap suffix">ou=Idmap</smbconfoption>
 948                 <smbconfoption name="idmap uid">40000-50000</smbconfoption>
 949                 <smbconfoption name="idmap gid">40000-50000</smbconfoption>
 950                 </smbconfblock>
 951
 952                 <para>
 953 <indexterm><primary>NFS</primary></indexterm>
 954                 This configuration allows Winbind installations on multiple servers to
 955                 share a UID/GID number space, thus avoiding the interoperability problems
 956                 with NFS that were present in Samba-2.2.
 957                 </para>
 958
 959                 </sect4>
 960
 961                 </sect3>
 962
 963         </sect2>
 964
 965 </sect1>
 966
 967 </chapter>