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  20
  21   <info>
  22     <title>&os; &release.current; Release Notes</title>
  23
  24     <author>
  25       <orgname>The &os; Project</orgname>
  26     </author>
  27
  28     <pubdate>$FreeBSD$</pubdate>
  29
  30     <copyright>
  31       <year>2017</year>
  32       <holder role="mailto:doc@FreeBSD.org">The &os; Documentation
  33         Project</holder>
  34     </copyright>
  35
  36     <legalnotice xml:id="trademarks" role="trademarks">
  37       &tm-attrib.freebsd;
  38       &tm-attrib.ibm;
  39       &tm-attrib.ieee;
  40       &tm-attrib.intel;
  41       &tm-attrib.sparc;
  42       &tm-attrib.general;
  43     </legalnotice>
  44
  45     <abstract>
  46       <para>The release notes for &os; &release.current; contain
  47         a summary of the changes made to the &os; base system on the
  48         &release.branch; development line.  This document lists
  49         applicable security advisories that were issued since the last
  50         release, as well as significant changes to the &os; kernel and
  51         userland.  Some brief remarks on upgrading are also
  52         presented.</para>
  53     </abstract>
  54   </info>
  55
  56   <sect1 xml:id="intro">
  57     <title>Introduction</title>
  58
  59     <para>This document contains the release notes for &os;
  60       &release.current;.  It describes recently added, changed, or
  61       deleted features of &os;.  It also provides some notes on
  62       upgrading from previous versions of &os;.</para>
  63
  64     <para releasetype="current">The &release.type; distribution to
  65       which these release notes apply represents the latest point
  66       along the &release.branch; development branch since
  67       &release.branch; was created.  Information regarding pre-built,
  68       binary &release.type; distributions along this branch can be
  69       found at <uri
  70         xlink:href="&release.url;">&release.url;</uri>.</para>
  71
  72     <para releasetype="snapshot">The &release.type; distribution to
  73       which these release notes apply represents a point along the
  74       &release.branch; development branch between &release.prev; and
  75       the future &release.next;.  Information regarding pre-built,
  76       binary &release.type; distributions along this branch can be
  77       found at <uri
  78         xlink:href="&release.url;">&release.url;</uri>.</para>
  79
  80     <para releasetype="release">This distribution of &os;
  81       &release.current; is a &release.type; distribution.  It can be
  82       found at <uri xlink:href="&release.url;">&release.url;</uri> or
  83       any of its mirrors.  More information on obtaining this (or
  84       other) &release.type; distributions of &os; can be found in the
  85       <link
  86         xlink:href="&url.books.handbook;/mirrors.html"><quote>Obtaining
  87           &os;</quote> appendix</link> to the <link
  88         xlink:href="&url.books.handbook;/">&os;
  89         Handbook</link>.</para>
  90
  91     <para>All users are encouraged to consult the release errata
  92       before installing &os;.  The errata document is updated with
  93       <quote>late-breaking</quote> information discovered late in the
  94       release cycle or after the release.  Typically, it contains
  95       information on known bugs, security advisories, and corrections
  96       to documentation.  An up-to-date copy of the errata for &os;
  97       &release.current; can be found on the &os; Web site.</para>
  98
  99     <para>This document describes the most user-visible new or changed
 100       features in &os; since &release.prev;.</para>
 101
 102     <para>Typical release note items document recent security
 103       advisories issued after &release.prev;, new drivers or hardware
 104       support, new commands or options, major bug fixes, or
 105       contributed software upgrades.  They may also list changes to
 106       major ports/packages or release engineering practices.  Clearly
 107       the release notes cannot list every single change made to &os;
 108       between releases; this document focuses primarily on security
 109       advisories, user-visible changes, and major architectural
 110       improvements.</para>
 111   </sect1>
 112
 113   <sect1 xml:id="upgrade">
 114     <title>Upgrading from Previous Releases of &os;</title>
 115
 116     <para arch="amd64,i386">Binary upgrades between RELEASE versions
 117       (and snapshots of the various security branches) are supported
 118       using the &man.freebsd-update.8; utility.  The binary upgrade
 119       procedure will update unmodified userland utilities, as well as
 120       unmodified <filename>GENERIC</filename> kernel distributed as
 121       a part of an official &os; release.  The &man.freebsd-update.8;
 122       utility requires that the host being upgraded have Internet
 123       connectivity.</para>
 124
 125     <para>Source-based upgrades (those based on recompiling the &os;
 126       base system from source code) from previous versions are
 127       supported, according to the instructions in
 128       <filename>/usr/src/UPDATING</filename>.</para>
 129
 130     <important>
 131       <para>Upgrading &os; should only be attempted after
 132         backing up <emphasis>all</emphasis> data and configuration
 133         files.</para>
 134     </important>
 135   </sect1>
 136
 137   <sect1 xml:id="security-errata">
 138     <title>Security and Errata</title>
 139
 140     <para>This section lists the various Security Advisories and
 141       Errata Notices since &release.prev;.</para>
 142
 143     <sect2 xml:id="security">
 144       <title>Security Advisories</title>
 145
 146       &security;
 147     </sect2>
 148
 149     <sect2 xml:id="errata">
 150       <title>Errata Notices</title>
 151
 152       &errata;
 153     </sect2>
 154   </sect1>
 155
 156   <sect1 xml:id="userland">
 157     <title>Userland</title>
 158
 159     <para>This section covers changes and additions to userland
 160       applications, contributed software, and system utilities.</para>
 161
 162     <sect2 xml:id="userland-config">
 163       <title>Userland Configuration Changes</title>
 164
 165       <para revision="313206">The &man.inetd.8; utility is now built
 166         without <literal>libwrap</literal> support when
 167         <literal>WITHOUT_TCP_WRAPPERS</literal> is set in
 168         &man.src.conf.5;.</para>
 169
 170       <para revision="316046">The &man.libthr.3; library and related
 171         files are now evaluated and removed by the
 172         <literal>delete-old-libs</literal> target when upgrading the
 173         system if <literal>WITHOUT_LIBTHR</literal> is
 174         set in &man.src.conf.5;.</para>
 175
 176       <para revision="319243">The
 177         <literal>WITH_RPCBIND_WARMSTART_SUPPORT</literal>
 178         &man.src.conf.5; knob has been added, which when enabled
 179         allows building &man.rpcbind.8; with
 180         <literal>warmstart</literal> support.</para>
 181     </sect2>
 182
 183     <sect2 xml:id="userland-programs">
 184       <title>Userland Application Changes</title>
 185
 186       <para revision="298427">The &man.truss.1; utility has been
 187         updated to include the <literal>-H</literal> flag, which logs
 188         the thread ID of a thread invoking a system call.</para>
 189
 190       <para revision="308915">The &man.zfsbootcfg.8; utility has been
 191         added, providing one-time &man.boot.config.5;-style options
 192         for &man.zfsboot.8;.</para>
 193
 194       <para revision="319390">The &man.cxgbetool.8; utility has been
 195         added, providing command-line access to features and debugging
 196         facilities of &man.cxgbe.4; devices.</para>
 197
 198       <para revision="321242">The &man.cron.8; utility has been
 199         updated to add support for including files within <filename
 200           class="directory">/etc/cron.d</filename> and <filename
 201           class="directory">/usr/local/etc/cron.d</filename> by
 202         default.</para>
 203
 204       <para revision="321234">The &man.syslogd.8; utility has been
 205         updated to add the <literal>include</literal> keyword which
 206         allows specifying a directory containing configuration files
 207         to be included in addition to &man.syslog.conf.5;.  The
 208         default &man.syslog.conf.5; has been updated to include
 209         <filename class="directory">/etc/syslog.d</filename> and
 210         <filename class="directory">/usr/local/etc/syslog.d</filename>
 211         by default.</para>
 212
 213       <para revision="321263">The &man.newsyslog.8; utility has been
 214         updated to support logging to &man.syslogd.8; in a format
 215         compliant with RFC5424.  For more details, see the description
 216         for the <literal>T</literal> flag in
 217         &man.newsyslog.conf.5;.</para>
 218
 219       <para revision="321216">The &man.savecore.8; utility has been
 220         updated to use <acronym>KiB</acronym> when outputting
 221         information regarding total space, free space, etc.</para>
 222     </sect2>
 223
 224     <sect2 xml:id="userland-contrib">
 225       <title>Contributed Software</title>
 226
 227       <para revision="309512"><application>Subversion</application>
 228         has been updated to version 1.9.5.</para>
 229
 230       <para revision="309848">&man.file.1; has been updated to version
 231         5.29.</para>
 232
 233       <para revision="310490">The &man.amd.8; utility has been updated
 234         to version 6.2.</para>
 235
 236       <para revision="312516">&man.xz.1; has been updated to version
 237         5.2.3.</para>
 238
 239       <para revision="313796">&man.zlib.3; has been updated to version
 240         1.2.11.</para>
 241
 242       <para revision="316069">&man.ntpd.8; has been updated to version
 243         4.2.8p10.</para>
 244
 245       <para revision="316350">Timezone data files have been updated to
 246         version 2017b.</para>
 247
 248       <para revision="316958">&man.tcsh.1; has been updated to version
 249         6.20.00.</para>
 250
 251       <para revision="321304">&man.libarchive.3; has been updated to
 252         version 3.3.2.</para>
 253     </sect2>
 254
 255     <sect2 xml:id="userland-installer">
 256       <title>Installation and Configuration Tools</title>
 257
 258       <para revision="321202" contrib="sponsor" sponsor="&ff;">The
 259         default <acronym>EFI</acronym> partition created by
 260         &man.bsdinstall.8; has been increased from 800KB to
 261         200MB.</para>
 262     </sect2>
 263
 264     <sect2 xml:id="userland-rc">
 265       <title><filename class="directory">/etc/rc.d</filename>
 266         Scripts</title>
 267
 268       <para>&nbsp;</para>
 269     </sect2>
 270
 271     <sect2 xml:id="userland-periodic">
 272       <title><filename class="directory">/etc/periodic</filename>
 273         Scripts</title>
 274
 275       <para>&nbsp;</para>
 276     </sect2>
 277
 278     <sect2 xml:id="userland-libraries">
 279       <title>Runtime Libraries and API</title>
 280
 281       <para revision="316040">The &man.kvm.close.3; function has been
 282         updated to return the accumulated error from previous
 283         &man.close.2; calls.</para>
 284     </sect2>
 285
 286     <sect2 xml:id="userland-abi">
 287       <title>ABI Compatibility</title>
 288
 289       <para revision="309258">The type <literal>max_align_t</literal>
 290         is now defined for C11 compliance.</para>
 291     </sect2>
 292
 293     <sect2 xml:id="userland-debug">
 294       <title>Userland Debugging</title>
 295
 296       <para revision="304017">&man.ptrace.2; now supports events for
 297         thread creation and destruction, permitting more reliable
 298         debugging of threaded processes.</para>
 299
 300       <para revision="304499">&man.ptrace.2; now supports events for
 301         &man.vfork.2;, permitting reliable debugging across
 302         &man.vfork.2; invocations.</para>
 303
 304       <para revision="306786">Process core dumps now include the
 305         process ID (<acronym>PID</acronym>) and command line
 306         arguments.</para>
 307     </sect2>
 308   </sect1>
 309
 310   <sect1 xml:id="kernel">
 311     <title>Kernel</title>
 312
 313     <para>This section covers changes to kernel configurations, system
 314       tuning, and system control parameters that are not otherwise
 315       categorized.</para>
 316
 317     <sect2 xml:id="kernel-misc">
 318       <title>Miscellaneous Kernel Changes</title>
 319
 320       <para revision="321198">The &man.vt.4; driver has been updated,
 321         increasing the maximum framebuffer size.</para>
 322     </sect2>
 323
 324     <sect2 xml:id="kernel-bugfix">
 325       <title>Kernel Bug Fixes</title>
 326
 327       <para revision="317434">The &man.ipf.4; packet filter has been
 328         updated to prevent <literal>keep state</literal> from
 329         incorrectly implying <literal>keep frags</literal>, matching
 330         the behavior documented in &man.ipf.5;.</para>
 331     </sect2>
 332
 333     <sect2 xml:id="kernel-config">
 334       <title>Kernel Configuration</title>
 335
 336       <para>&nbsp;</para>
 337     </sect2>
 338
 339     <sect2 xml:id="kernel-sysctl">
 340       <title>System Tuning and Controls</title>
 341
 342       <para revision="321024">The
 343         <literal>kern.features.linux</literal> and
 344         <literal>kern.features.linux64</literal> flags have been
 345         added to the <literal>kern.features</literal> &man.sysctl.8;,
 346         which when set to <literal>1</literal>, indicate the kernel
 347         is configured with compatibility for 32-bit and/or 64-bit
 348         linux binaries, respectively.</para>
 349     </sect2>
 350   </sect1>
 351
 352   <sect1 xml:id="drivers">
 353     <title>Devices and Drivers</title>
 354
 355     <para>This section covers changes and additions to devices and
 356       device drivers since &release.prev;.</para>
 357
 358     <sect2 xml:id="drivers-device">
 359       <title>Device Drivers</title>
 360
 361       <para revision="306533" contrib="sponsor"
 362         sponsor="&chelsio;">&man.devctl.8; now supports a &quot;clear
 363         driver&quot; command as a complement to &quot;set
 364         driver&quot;.</para>
 365     </sect2>
 366
 367     <sect2 xml:id="drivers-storage">
 368       <title>Storage Drivers</title>
 369
 370       <para revision="319436">The &man.mpr.4; driver has been updated
 371         to support tri-mode
 372         (<acronym>SAS</acronym>/<acronym>SATA</acronym>/<acronym>PCIe</acronym>)
 373         Broadcom&reg; storage adapters.</para>
 374     </sect2>
 375
 376     <sect2 xml:id="drivers-network">
 377       <title>Network Drivers</title>
 378
 379       <para revision="309447" contrib="sponsor"
 380         sponsor="&chelsio;">The &man.cxgbev.4; driver has been added,
 381         providing support for Virtual Function devices
 382         (<acronym>VFs</acronym>) on Chelsio T4 and T5 adapters.</para>
 383
 384       <para revision="309560" contrib="sponsor"
 385         sponsor="&chelsio;">The &man.cxgbe.4; driver has been updated
 386         to provide support for Virtual Function devices
 387         (<acronym>VFs</acronym>) on Chelsio T6 adapters.</para>
 388
 389       <para revision="309560" contrib="sponsor"
 390         sponsor="&chelsio;">The &man.cxgbe.4; driver now supports
 391         devices using T6-based adapters which support 10, 25, 40, and
 392         100 Gbps.</para>
 393
 394       <para revision="312359">The &man.alc.4; driver has been updated
 395         to provide support for Atheros&reg; Killer&nbsp;E2400&trade;
 396         Gigabit ethernet cards.</para>
 397
 398       <para revision="314019" contrib="sponsor" sponsor="&ms;">The
 399         &man.alc.4; driver has been updated to provide support for
 400         Atheros&reg; Killer&nbsp;E2500&trade; Gigabit ethernet
 401         cards.</para>
 402
 403       <para revision="316485">The &man.qlnxe.4; driver has been added,
 404         providing support for Cavium&reg; Qlogic&trade; 45000 Series
 405         adapters.</para>
 406
 407       <para revision="319270" contrib="sponsor"
 408         sponsor="&chelsio;">The &man.cxgbe.4; driver has been updated
 409         to firmware version 1.16.45.0 for T4, T5, and T6 cards.</para>
 410     </sect2>
 411   </sect1>
 412
 413   <sect1 xml:id="hardware">
 414     <title>Hardware Support</title>
 415
 416     <para>This section covers general hardware support for physical
 417       machines, hypervisors, and virtualization environments, as well
 418       as hardware changes and updates that do not otherwise fit in
 419       other sections of this document.</para>
 420
 421     <sect2 xml:id="hardware-support">
 422       <title>Hardware Support</title>
 423
 424       <para>&nbsp;</para>
 425     </sect2>
 426
 427     <sect2 xml:id="hardware-virtualization">
 428       <title>Virtualization Support</title>
 429
 430       <para revision="306520" contrib="sponsor"
 431         sponsor="&chelsio;"><acronym>PCI</acronym> passthrough with
 432         &man.bhyve.4; resets functions via <acronym>FLR</acronym> when
 433         a virtual machine is started and stopped.</para>
 434
 435       <para revision="306472" contrib="sponsor"
 436         sponsor="&chelsio;"><acronym>PCI</acronym> passthrough with
 437         &man.bhyve.4; supports more dynamic configurations permitting
 438         devices to be marked for passthrough or host use at
 439         runtime.</para>
 440     </sect2>
 441
 442     <sect2 xml:id="hardware-arm">
 443       <title>ARM Support</title>
 444
 445       <para>&nbsp;</para>
 446     </sect2>
 447   </sect1>
 448
 449   <sect1 xml:id="storage">
 450     <title>Storage</title>
 451
 452     <para>This section covers changes and additions to file systems
 453       and other storage subsystems, both local and networked.</para>
 454
 455     <sect2 xml:id="storage-general">
 456       <title>General Storage</title>
 457
 458       <para>&nbsp;</para>
 459     </sect2>
 460
 461     <sect2 xml:id="storage-net">
 462       <title>Networked Storage</title>
 463
 464       <para revision="318675">The <acronym>NFS</acronym> client now
 465         properly handles <literal>NFS4ERR_BAD_SESSION</literal> errors
 466         received from an <acronym>NFS</acronym> server.  Additionally,
 467         the kernel <acronym>RPC</acronym> client has been updated to
 468         prevent creating new <acronym>TCP</acronym> connections when
 469         <literal>ERESTART</literal> is received from
 470         &man.sosend.9;.</para>
 471
 472       <para revision="321031">The <acronym>NFS</acronym> client has
 473         been updated to support <acronym>pNFS</acronym>
 474         <literal>commit</literal> through the
 475         <literal>DS</literal>.</para>
 476     </sect2>
 477
 478     <sect2 xml:id="storage-zfs">
 479       <title>ZFS</title>
 480
 481       <para></para>
 482     </sect2>
 483
 484     <sect2 xml:id="storage-geom">
 485       <title>&man.geom.4;</title>
 486
 487       <para>&nbsp;</para>
 488     </sect2>
 489   </sect1>
 490
 491   <sect1 xml:id="boot">
 492     <title>Boot Loader Changes</title>
 493
 494     <para>This section covers the boot loader, boot menu, and other
 495       boot-related changes.</para>
 496
 497     <sect2 xml:id="boot-loader">
 498       <title>Boot Loader Changes</title>
 499
 500       <para>&nbsp;</para>
 501     </sect2>
 502
 503     <sect2 xml:id="boot-menu">
 504       <title>Boot Menu Changes</title>
 505
 506       <para>&nbsp;</para>
 507     </sect2>
 508   </sect1>
 509
 510   <sect1 xml:id="network">
 511     <title>Networking</title>
 512
 513     <para>This section describes changes that affect networking in
 514       &os;.</para>
 515
 516     <sect2 xml:id="network-general">
 517       <title>General Networking Changes</title>
 518
 519       <para revision="313558" contrib="sponsor"
 520         sponsor="&dellemc;">The network stack has been modified to fix
 521         incorrect or invalid <acronym>IP</acronym> addresses if
 522         multiple threads emit a <acronym>UDP</acronym>
 523         <literal>log_in_vain</literal> message concurrently.</para>
 524
 525       <para revision="317375" contrib="sponsor"
 526         sponsor="&multiplay;">The <acronym>TCP</acronym> stack has
 527         been changed to use the estimated <acronym>RTT</acronym>
 528         instead of timestamps for receive buffer auto resizing.</para>
 529     </sect2>
 530
 531     <sect2 xml:id="network-protocols">
 532       <title>Network Protocols</title>
 533
 534       <para revision="309340" contrib="sponsor"
 535         sponsor="&dellemc;">Support for <acronym>GARP</acronym>
 536         (gratuitous <acronym>ARP</acronym>) retransmit has been added.
 537         A new &man.sysctl.8;,
 538         <literal>net.link.ether.inet.garp_rexmit_count</literal>, has
 539         been added, which sets the maximum number of retransmissions
 540         when set to a non-zero value.</para>
 541     </sect2>
 542   </sect1>
 543
 544   <sect1 xml:id="ports">
 545     <title>Ports Collection and Package Infrastructure</title>
 546
 547     <para>This section covers changes to the &os;&nbsp;Ports
 548       Collection, package infrastructure, and package maintenance and
 549       installation tools.</para>
 550
 551     <sect2 xml:id="ports-infrastructure">
 552       <title>Infrastructure Changes</title>
 553
 554       <para>&nbsp;</para>
 555     </sect2>
 556
 557     <sect2 xml:id="ports-packages ">
 558       <title>Packaging Changes</title>
 559
 560       <para>&nbsp;</para>
 561     </sect2>
 562   </sect1>
 563
 564   <sect1 xml:id="doc">
 565     <title>Documentation</title>
 566
 567     <para>This section covers changes to the &os;&nbsp;Documentation
 568       Project sources and toolchain.</para>
 569
 570     <sect2 xml:id="doc-sources">
 571       <title>Documentation Source Changes</title>
 572
 573       <para>&nbsp;</para>
 574     </sect2>
 575
 576     <sect2 xml:id="doc-toolchain">
 577       <title>Documentation Toolchain Changes</title>
 578
 579       <para>&nbsp;</para>
 580     </sect2>
 581   </sect1>
 582
 583   <sect1 xml:id="releng">
 584     <title>Release Engineering and Integration</title>
 585
 586     <para>This section convers changes that are specific to the
 587       &os;&nbsp;Release Engineering processes.</para>
 588
 589     <sect2 xml:id="releng-changes">
 590       <title>Integration Changes</title>
 591
 592       <para>&nbsp;</para>
 593     </sect2>
 594   </sect1>
 595 </article>