release/doc/en_US.ISO8859-1/relnotes/article.xml

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  12   xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0">
  13
  14   <info>
  15     <title>&os; &release.current; Release Notes</title>
  16
  17     <author>
  18       <orgname>The &os; Project</orgname>
  19     </author>
  20
  21     <pubdate>$FreeBSD$</pubdate>
  22
  23     <copyright>
  24       <year>2000</year>
  25       <year>2001</year>
  26       <year>2002</year>
  27       <year>2003</year>
  28       <year>2004</year>
  29       <year>2005</year>
  30       <year>2006</year>
  31       <year>2007</year>
  32       <year>2008</year>
  33       <year>2009</year>
  34       <year>2010</year>
  35       <year>2011</year>
  36       <year>2012</year>
  37       <year>2013</year>
  38       <year>2014</year>
  39       <holder role="mailto:doc@FreeBSD.org">The &os; Documentation
  40         Project</holder>
  41     </copyright>
  42
  43     <legalnotice xml:id="trademarks" role="trademarks">
  44       &tm-attrib.freebsd;
  45       &tm-attrib.ibm;
  46       &tm-attrib.ieee;
  47       &tm-attrib.intel;
  48       &tm-attrib.sparc;
  49       &tm-attrib.general;
  50     </legalnotice>
  51
  52     <abstract>
  53       <para>The release notes for &os; &release.current; contain
  54         a summary of the changes made to the &os; base system on the
  55         &release.branch; development line.  This document lists
  56         applicable security advisories that were issued since the last
  57         release, as well as significant changes to the &os; kernel and
  58         userland.  Some brief remarks on upgrading are also
  59         presented.</para>
  60     </abstract>
  61   </info>
  62
  63   <sect1 xml:id="intro">
  64     <title>Introduction</title>
  65
  66     <para>This document contains the release notes for &os;
  67       &release.current;.  It describes recently added, changed, or
  68       deleted features of &os;.  It also provides some notes on
  69       upgrading from previous versions of &os;.</para>
  70
  71     <para releasetype="current">The &release.type; distribution to
  72       which these release notes apply represents the latest point
  73       along the &release.branch; development branch since
  74       &release.branch; was created.  Information regarding pre-built,
  75       binary &release.type; distributions along this branch can be
  76       found at <uri
  77         xlink:href="&release.url;">&release.url;</uri>.</para>
  78
  79     <para releasetype="snapshot">The &release.type; distribution to
  80       which these release notes apply represents a point along the
  81       &release.branch; development branch between &release.prev; and
  82       the future &release.next;.  Information regarding pre-built,
  83       binary &release.type; distributions along this branch can be
  84       found at <uri
  85         xlink:href="&release.url;">&release.url;</uri>.</para>
  86
  87     <para releasetype="release">This distribution of &os;
  88       &release.current; is a &release.type; distribution.  It can be
  89       found at <uri xlink:href="&release.url;">&release.url;</uri> or
  90       any of its mirrors.  More information on obtaining this (or
  91       other) &release.type; distributions of &os; can be found in the
  92       <link
  93         xlink:href="&url.books.handbook;/mirrors.html"><quote>Obtaining
  94           &os;</quote> appendix</link> to the <link
  95         xlink:href="&url.books.handbook;/">&os;
  96         Handbook</link>.</para>
  97
  98     <para>All users are encouraged to consult the release errata
  99       before installing &os;.  The errata document is updated with
 100       <quote>late-breaking</quote> information discovered late in the
 101       release cycle or after the release.  Typically, it contains
 102       information on known bugs, security advisories, and corrections
 103       to documentation.  An up-to-date copy of the errata for &os;
 104       &release.current; can be found on the &os; Web site.</para>
 105   </sect1>
 106
 107   <sect1 xml:id="new">
 108     <title>What's New</title>
 109
 110     <para>This section describes the most user-visible new or changed
 111       features in &os; since &release.prev;.</para>
 112
 113     <para>Typical release note items document recent security
 114       advisories issued after &release.prev;, new drivers or hardware
 115       support, new commands or options, major bug fixes, or
 116       contributed software upgrades.  They may also list changes to
 117       major ports/packages or release engineering practices.  Clearly
 118       the release notes cannot list every single change made to &os;
 119       between releases; this document focuses primarily on security
 120       advisories, user-visible changes, and major architectural
 121       improvements.</para>
 122
 123     <sect2 xml:id="security">
 124       <title>Security Advisories</title>
 125
 126       <para>&nbsp;</para>
 127
 128     </sect2>
 129
 130     <sect2 xml:id="kernel">
 131       <title>Kernel Changes</title>
 132
 133       <para revision="260431">A new &man.sysctl.8;,
 134         <literal>kern.panic_reboot_wait_time</literal>, has been
 135         added, which allows controlling how long the system will wait
 136         after &man.panic.9; before rebooting.</para>
 137
 138       <para revision="262861">The &man.vt.4; driver has been merged
 139         from &os;-CURRENT.  To enable &man.vt.4;, enter
 140         <literal>set kern.vty=vt</literal> at the &man.loader.8;
 141         prompt during boot, or add <literal>kern.vty=vt</literal> to
 142         &man.loader.conf.5; and reboot the system.</para>
 143
 144       <para revision="263122">Support for &man.hwpmc.4; has been added
 145         for &powerpc;&nbsp;970 class processors.</para>
 146
 147       <para revision="263197">Support for ADT7460 and ADT7467 fan
 148         controllers found in newer PowerBooks&trade; and
 149         iBooks&trade; has been added to the &man.iicbus.4;
 150         driver.</para>
 151
 152       <para revision="263256">A panic triggered by removing
 153         a &man.urtwn.4; device has been fixed.</para>
 154
 155       <para revision="263799">A potential deadlock in the &man.usb.4;
 156         stack triggered by detaching USB devices that create character
 157         devices has been fixed.</para>
 158
 159       <para revision="263869">Support for &amd;&nbsp;Family 16h sensor
 160         devices has been added to &man.amdtemp.4;.</para>
 161
 162       <para revision="265610">The &man.uslcom.4; driver has been
 163         updated to support 26 new devices.</para>
 164
 165       <para revision="266165">A kernel bug that inhibited proper
 166         functionality of the <literal>dev.cpu.0.freq</literal>
 167         &man.sysctl.8; on &intel; processors with Turbo
 168         Boost&trade; enabled has been fixed.</para>
 169
 170       <para revision="266436">The &man.uart.4; driver has been
 171         updated to include support for the &intel;&nbsp;Lynx Point
 172         KT <acronym>AMT</acronym> serial port.</para>
 173
 174       <para revision="266594">The <literal>radeonkms(4)</literal>
 175         driver has been updated to include 32-bit &man.ioctl.2;
 176         support, allowing 32-bit applications to run on a 64-bit
 177         system.</para>
 178
 179       <para revision="266718">A bug that would prevent
 180         a &man.jail.8; from setting the correct IPv4 source address
 181         with some operations that required
 182         <literal>security.jail.allow_raw_sockets</literal> has been
 183         fixed.</para>
 184
 185       <para revision="266911">The &man.hwpmc.4; driver has been
 186         updated to support core events from the Atom&trade;
 187         Silvermont architecture.</para>
 188
 189       <para revision="268046">The &man.oce.4; driver has been updated
 190         with vendor-supplied fixes for big endian support, and 20GB/s
 191         and 25GB/s link speeds.</para>
 192
 193       <para revision="270630">The &os;&nbsp;virtual memory subsystem
 194         has been updated to implement <quote>fast path</quote> for
 195         the page fault handler.</para>
 196
 197       <para revision="271069">The &man.asmc.4; driver has been updated
 198         to support the &apple;&nbsp;Mac Mini 3,1.</para>
 199
 200       <para revision="271111">The &os;/&arch.powerpc64; default kernel
 201         configuration, <filename>GENERIC64</filename>, has been
 202         updated to enable the &man.vt.4; console driver for the
 203         Sony&reg;&nbsp;Playstation&nbsp;3&trade; platform.</para>
 204
 205       <para revision="271116" contrib="sponsor" sponsor="&ff;">The
 206         &os;/&arch.powerpc; <literal>ofwfb</literal> driver, used to
 207         provide a graphics console when the &man.vt.4; console driver
 208         is used, has been modified to work with the <filename
 209           role="package">x11-drivers/xf86-video-scfb</filename>
 210         port.</para>
 211
 212       <note>
 213         <para>If using an <acronym>ATI</acronym> graphics card with
 214           the &man.vt.4; driver, the <filename
 215             role="package">x11-servers/xorg-server</filename> package
 216           must be updated to version 1.12.4_8 or newer.</para>
 217       </note>
 218
 219       <para revision="271128" contrib="sponsor" sponsor="&ff;">Several
 220         performance enchancements to the &man.vt.4; driver have been
 221         merged from &os;-CURRENT.</para>
 222
 223       <para revision="271153">The default stack size
 224         (<literal>KSTACK_PAGES</literal>) has been increased from
 225         <literal>4</literal> to <literal>8</literal> for the
 226         &arch.powerpc64; architecture.</para>
 227
 228       <sect3 xml:id="kernel-virtualization">
 229         <title>Virtualization Support</title>
 230
 231         <para revision="259450">Support for &microsoft; Hyper-V
 232           has been added to &os;/i386 as loadable modules, however
 233           not available in the <filename>GENERIC</filename> kernel
 234           configuration.</para>
 235
 236         <para revision="261090">The &man.bhyve.4; hypervisor now
 237           supports soft power-off functionality via the ACPI S5
 238           state.</para>
 239
 240         <para revision="267399">Support for &os;/i386 guests has been
 241           added to &man.bhyve.4;.</para>
 242
 243         <para revision="267427">Support for virtualized
 244           <literal>XSAVE</literal> has been added to &man.bhyve.4;,
 245           allowing guest operating systems to use
 246           <literal>XSAVE</literal> and
 247           <literal>XSAVE</literal>-enabled features, such as
 248           <acronym>AVX</acronym>.</para>
 249
 250         <para revision="268932">The &man.bhyve.4; hypervisor now
 251           supports booting from a &man.zfs.8; filesystem.</para>
 252
 253         <para revision="268933">A new driver, &man.virtio_random.4;,
 254           has been added, which allows &os; virtual machines to
 255           harvest entropy from the hypervisor.</para>
 256
 257         <para revision="270159">The &man.bhyve.4; hypervisor has been
 258           synced with the version in &os;-CURRENT.</para>
 259
 260         <para>A number of enhancements have been added, and several
 261           bug fixes, including:</para>
 262
 263         <itemizedlist>
 264           <listitem>
 265             <para>Post-mortem debugging has been added when
 266               a guest virtual machine exits with an
 267               <quote><acronym>EPT</acronym> Misconfiguration</quote>
 268               error.</para>
 269           </listitem>
 270
 271           <listitem>
 272             <para>The hypervisor &man.virtio.4; <acronym>API</acronym>
 273               has been expanded from 32- to 64-bit.</para>
 274           </listitem>
 275
 276           <listitem>
 277             <para>Support for identifying capabilities of the virtual
 278               <acronym>CPU</acronym> has been added.</para>
 279           </listitem>
 280
 281           <listitem>
 282             <para>Support for emulating legacy x86 task
 283               switching has been added.</para>
 284           </listitem>
 285
 286           <listitem>
 287             <para>Support to list the VT-x features in base kernel
 288               &man.dmesg.8; has been added.</para>
 289           </listitem>
 290
 291           <listitem>
 292             <para>Support for extended PCI configuration space
 293               has been added.</para>
 294           </listitem>
 295         </itemizedlist>
 296       </sect3>
 297
 298       <sect3 xml:id="kernel-arm">
 299         <title>ARM Support</title>
 300
 301         <para revision="259355">The <filename>WANDBOARD</filename>
 302           kernel configuration file has been added.</para>
 303
 304         <para revision="265067">Boot devices may now be specified by
 305           setting a u-boot environment variable.  If a boot device is
 306           not specified, the probe mechanism will be used.  To specify
 307           the boot device, set the
 308           <literal>loaderdev=<replaceable>device</replaceable></literal>
 309           u-boot environment variable.</para>
 310
 311         <para revision="266000">The <literal>nexus(4)</literal> driver
 312           has been updated to include <quote>Flattened Device
 313             Tree</quote> support, replacing the &man.fdtbus.4; driver
 314           in most cases.</para>
 315
 316         <para revision="266105">The &man.gpioiic.4; and
 317           &man.gpioled.4; have been merged from &os;-CURRENT.</para>
 318
 319         <para>Support for hardware floating point was added to the
 320           kernel, and enabled by default in the configuration files
 321           for all platforms that contain the required hardware.</para>
 322
 323         <para><application>C++</application> exception handling now
 324           works with <application>GCC</application>.</para>
 325
 326         <para>Support for <acronym>SMP</acronym> was added to the
 327           kernel, and enabled by default in the configuration files
 328           for all platforms that contain multi-core CPUs.</para>
 329
 330         <para>Support was added for:</para>
 331
 332         <itemizedlist>
 333           <listitem>
 334             <para>CHROMEBOOK (Samsung Exynos 5250)</para>
 335           </listitem>
 336
 337           <listitem>
 338             <para>COLIBRI (Freescale Vybrid)</para>
 339           </listitem>
 340
 341           <listitem>
 342             <para>COSMIC (Freescale Vybrid)</para>
 343           </listitem>
 344
 345           <listitem>
 346             <para>IMX53-QSB (Freescale i.MX53)</para>
 347           </listitem>
 348
 349           <listitem>
 350             <para>QUARTZ (Freescale Vybrid)</para>
 351           </listitem>
 352
 353           <listitem>
 354             <para>RADXA (Rockchip rk30xx)</para>
 355           </listitem>
 356
 357           <listitem>
 358             <para>WANDBOARD (Freescale i.MX6)</para>
 359           </listitem>
 360         </itemizedlist>
 361
 362         <para>An <acronym>I2C</acronym> driver was added for
 363           the RaspberryPi.</para>
 364
 365         <para>Drivers have been added to support <acronym>TI</acronym>
 366           platforms, such as BEAGLEBONE and PANDABOARD:</para>
 367
 368         <itemizedlist>
 369           <listitem>
 370             <para>PRUSS (Programmable Realtime Unit Subsystem)</para>
 371           </listitem>
 372
 373           <listitem>
 374             <para>MBOX (Mailbox hardware)</para>
 375           </listitem>
 376
 377           <listitem>
 378             <para>SDHCI (new faster driver for
 379               <acronym>MMC</acronym>/<acronym>SD</acronym>
 380               storage)</para>
 381           </listitem>
 382
 383           <listitem>
 384             <para>PPS (Pulse Per Second input on a
 385               <acronym>GPIO</acronym>/timer pin)</para>
 386           </listitem>
 387
 388           <listitem>
 389             <para>PWM (Pulse Width Modulation output)</para>
 390           </listitem>
 391
 392           <listitem>
 393             <para>ADC (Analog to Digital converter)</para>
 394           </listitem>
 395         </itemizedlist>
 396       </sect3>
 397
 398       <sect3 xml:id="boot">
 399         <title>Boot Loader Changes</title>
 400
 401         <para revision="262701">A kernel selection menu has been added
 402           to &man.loader.8;.  If the <quote>beastie menu</quote> is
 403           enabled, the kernel to boot may be selected from the kernel
 404           selection menu.  Additional kernels may be listed in
 405           &man.loader.conf.5; as a comma- or space-separated list.  By
 406           default, <literal>kernel</literal> and
 407           <literal>kernel.old</literal> are listed.</para>
 408
 409         <para revision="271130" contrib="sponsor" sponsor="&ff;">The
 410           <filename class="directory">sys/boot/</filename> sources
 411           have been rearranged, moving &man.libstand.3; to a directory
 412           indicating the library is built as 32-bit.</para>
 413
 414         <para revision="271135" contrib="sponsor" sponsor="&ff;">The
 415           &man.libstand.3; library has been updated to produce
 416           a 64-bit shared library for the &os;/&arch.amd64; and
 417           &os;/&arch.powerpc64; architectures.</para>
 418
 419         <para revision="271135" contrib="sponsor"
 420           sponsor="&ff;">Initial support for <acronym>UEFI</acronym>
 421           boot has been added.</para>
 422
 423         <para revision="271136" contrib="sponsor" sponsor="&ff;">Three
 424           new files are installed to <filename
 425             class="directory">/boot</filename>, supporting
 426           <acronym>UEFI</acronym> boot:</para>
 427
 428         <itemizedlist>
 429           <listitem>
 430             <para><filename>boot1.efi</filename>: The
 431               <acronym>UEFI</acronym> first stage bootstrap
 432               file.</para>
 433           </listitem>
 434
 435           <listitem>
 436             <para><filename>boot1.efifat</filename>:
 437               A <acronym>FAT</acronym> filesystem image containing
 438               an <acronym>EFI</acronym> system partition.</para>
 439           </listitem>
 440
 441           <listitem>
 442             <para><filename>loader.efi</filename>: The third stage
 443               bootstrap file.</para>
 444           </listitem>
 445         </itemizedlist>
 446       </sect3>
 447
 448       <sect3 xml:id="proc">
 449         <title>Hardware Support</title>
 450
 451         <para>&nbsp;</para>
 452
 453         <sect4 xml:id="mm">
 454           <title>Multimedia Support</title>
 455
 456           <para>&nbsp;</para>
 457
 458         </sect4>
 459
 460         <sect4 xml:id="net-if">
 461           <title>Network Interface Support</title>
 462
 463           <para revision="259453">Support for Ralink RT5370 and
 464             RT5372 chipsets has been added to the &man.run.4;
 465             driver.</para>
 466
 467           <para revision="260120">Firmware for the &man.run.4; driver
 468             has been updated to version 0.33.</para>
 469
 470           <para revision="261868">Support for the Ralink RT3593
 471             chipset has been added to the &man.run.4; driver.</para>
 472
 473           <para revision="261972">The &man.nve.4; driver is now
 474             deprecated, and the &man.nfe.4; driver should be used
 475             instead.</para>
 476
 477           <para revision="262137">Support for the &man.axge.4; driver
 478             has been added.  This driver supports the ASIX AX88178A
 479             and AX88179 USB ethernet adapters.  The AX88178A supports
 480             USB 2.0, and the AX88179 supports USB 2.0 and 3.0.</para>
 481
 482           <para revision="262363">The &man.urndis.4; driver has been
 483             imported from OpenBSD.</para>
 484
 485           <para revision="264866">Support for multiple
 486             transmitter/receiver queues has been added to the
 487             &man.vmx.4; driver.</para>
 488
 489           <note>
 490             <para>The &os;&nbsp;guest operating system must have
 491               <acronym>MSIX</acronym> enabled as a prerequisite for
 492               multiple queues.</para>
 493           </note>
 494
 495           <para revision="265345">Support for the ASUS USB-N10 Nano
 496             wireless card has been added to the &man.urtwn.4;
 497             driver.</para>
 498
 499           <para revision="266212">Transmission checksum offloading has
 500             been disabled for the RTL8168C and RTL8168CP chipsets in
 501             the &man.re.4; driver for TCP and UDP frames.  This is
 502             due to a report of UDP datagrams with IP options
 503             generating corrupt frames.</para>
 504
 505           <para revision="266578">Preliminary support has been added
 506             to the &man.urtwn.4; driver for the Realtek RTL8188EUS and
 507             RTL8188ETV chipsets.</para>
 508
 509           <para revision="267694">A bug in the fast receiver buffer
 510             recycle path has been fixed in the &man.cxgbe.4;
 511             driver.</para>
 512
 513           <para revision="267849" contrib="vendor"
 514             vendor="&chelsio;">The bundled &man.cxgbe.4; firmware for
 515             T4 and T5 cards has been updated to version
 516             1.11.27.0.</para>
 517
 518           <para revision="269196">The &man.em.4; driver has been
 519             updated to version 7.4.2.</para>
 520
 521           <para revision="269975">The &man.ixgbe.4; tunables have been
 522             renamed to match their &man.sysctl.8; counterparts:</para>
 523
 524           <informaltable frame="none" pgwide="0">
 525             <tgroup cols="2">
 526               <colspec colwidth="1*"/>
 527               <colspec colwidth="1*"/>
 528               <thead>
 529                 <row>
 530                   <entry>Old Name</entry>
 531                   <entry>New Name</entry>
 532                 </row>
 533               </thead>
 534
 535               <tbody>
 536                 <row>
 537                   <entry><literal>hw.ixgbe.enable_aim</literal></entry>
 538                   <entry><literal>hw.ix.enable_aim</literal></entry>
 539                 </row>
 540
 541                 <row>
 542                   <entry><literal>hw.ixgbe.max_interrupt_rate</literal></entry>
 543                   <entry><literal>hw.ix.max_interrupt_rate</literal></entry>
 544                 </row>
 545
 546                 <row>
 547                   <entry><literal>hw.ixgbe.rx_process_limit</literal></entry>
 548                   <entry><literal>hw.ix.rx_process_limit</literal></entry>
 549                 </row>
 550
 551                 <row>
 552                   <entry><literal>hw.ixgbe.tx_process_limit</literal></entry>
 553                   <entry><literal>hw.ix.tx_process_limit</literal></entry>
 554                 </row>
 555
 556                 <row>
 557                   <entry><literal>hw.ixgbe.enable_msix</literal></entry>
 558                   <entry><literal>hw.ix.enable_msix</literal></entry>
 559                 </row>
 560
 561                 <row>
 562                   <entry><literal>hw.ixgbe.num_queues</literal></entry>
 563                   <entry><literal>hw.ix.num_queues</literal></entry>
 564                 </row>
 565
 566                 <row>
 567                   <entry><literal>hw.ixgbe.txd</literal></entry>
 568                   <entry><literal>hw.ix.txd</literal></entry>
 569                 </row>
 570
 571                 <row>
 572                   <entry><literal>hw.ixgbe.rxd</literal></entry>
 573                   <entry><literal>hw.ix.rxd</literal></entry>
 574                 </row>
 575
 576                 <row>
 577                   <entry><literal>hw.ixgbe.unsupported_sfp</literal></entry>
 578                   <entry><literal>hw.ix.unsupported_sfp</literal></entry>
 579                 </row>
 580               </tbody>
 581             </tgroup>
 582           </informaltable>
 583
 584           <para>Be sure to update &man.loader.conf.5; if using the
 585             old tunables before upgrading to
 586             &os;&nbsp;&release.current;.</para>
 587
 588           <para revision="270061">The &man.if.nf10bmac.4; driver has
 589             been merged from &os;-CURRENT to support the NetFPGA-10G
 590             Embedded CPU Ethernet Core.</para>
 591
 592           <para revision="270297">The &man.cxgbe.4; driver has been
 593             updated to support &man.netmap.4; for the T5 10G/40G
 594             cards.</para>
 595
 596           <para revision="270509">The &man.vtnet.4; driver has been
 597             updated to support &man.netmap.4;.</para>
 598
 599           <para revision="270514">The &man.urtwn.4; driver has been
 600             updated to support the ASUS USB-AC51 wireless card.</para>
 601
 602           <para revision="270631">The &intel;&nbsp;XL710 ethernet
 603             controller driver, <literal>ixlv(4)</literal>, has been
 604             merged from &os;-CURRENT.</para>
 605         </sect4>
 606       </sect3>
 607
 608       <sect3 xml:id="net-proto">
 609         <title>Network Protocols</title>
 610
 611         <para revision="265946">Support for the UDP-Lite protocol
 612           (RFC 3828) has been added to the IPv4 and IPv6
 613           stacks.</para>
 614
 615         <para revision="267771">A bug in &man.sctp.4; that would allow
 616           two listening sockets bound to the same port has been
 617           fixed.</para>
 618
 619         <para contrib="sponsor" sponsor="&ix;">Kernel RPC code, which
 620           is a base of NFS server took multiple optimizations, that
 621           significantly improved its performance and
 622           <acronym>SMP</acronym> scapability.</para>
 623
 624         <para revision="269065" contrib="sponsor" sponsor="&ff;">The
 625           <acronym>iSCSI</acronym> initiator has been updated to
 626           support redirection handling when an
 627           <acronym>iSCSI</acronym> device is configured with multiple
 628           <acronym>IP</acronym> addresses across different network
 629           interfaces.  Previously, clients connecting to
 630           such <acronym>iSCSI</acronym> devices could require
 631           additional client-side configuration.</para>
 632
 633         <para revision="265523" contrib="sponsor" sponsor="&ff;">A new
 634           &man.sysctl.8;,
 635           <literal>kern.iscsi.fail_on_disconnection</literal>, has
 636           been added, which allows <acronym>iSCSI</acronym> clients to
 637           remove the attached disk device when the connection to the
 638           target is dropped, where previously I/O would stop until the
 639           connection is restored.</para>
 640
 641         <para revision="265524" contrib="sponsor" sponsor="&ff;">The
 642           <acronym>iSCSI</acronym> transmit code has been optimized
 643           to coalesce <acronym>PDUs</acronym> and avoid lock
 644           contention.</para>
 645
 646         <para revision="265524" contrib="sponsor"
 647           sponsor="&ix;">Several performance optimizations have been
 648           made to the <acronym>iSCSI</acronym> subsystem, including
 649           deferring wakeup until enough data has been received to
 650           read or write a file, reducing <acronym>CPU</acronym> usage
 651           and throughput performance with large I/O workloads.</para>
 652       </sect3>
 653
 654       <sect3 xml:id="disks">
 655         <title>Disks and Storage</title>
 656
 657         <para revision="260385" contrib="sponsor" sponsor="&ix;">The
 658           &man.geom.4; subsystem has been updated to support I/O
 659           direct dispatch.  When safety requirements are met, it
 660           enables avoiding passing I/O requests to GEOM
 661           <literal>g_up</literal>/<literal>g_down</literal> thread,
 662           executing them directly in the caller context, avoiding
 663           CPU bottlenecks in
 664           <literal>g_up</literal>/<literal>g_down</literal> threads,
 665           plus avoid several context switches per I/O.</para>
 666
 667         <para revision="260385" contrib="sponsor" sponsor="&ix;">The
 668           &man.geom.4; RAID driver has been
 669           updated to support unmapped I/O.</para>
 670
 671         <para revision="260387" contrib="sponsor" sponsor="&ix;">The
 672           &man.cam.4; subsystem has been updated to support
 673           finer-grained locking, direct dispatch and multi-queue,
 674           which combined with &man.geom.4; direct dispatch, reduces
 675           lock congestion and improves <acronym>SMP</acronym>
 676           scalability of the SCSI/ATA stack.</para>
 677
 678         <para revision="260478">The &man.geom.8;
 679           <literal>GEOM_MULTIPATH</literal> class has been updated to
 680           support automatic live partition resizing.</para>
 681
 682         <para revision="260857">The &man.virtio_blk.4; driver has been
 683           updated to support unmapped I/O.</para>
 684
 685         <para revision="260858">The &man.virtio_scsi.4; driver has
 686           been updated to support unmapped I/O.</para>
 687
 688         <para revision="264522">Support for LUN-based CD changers has
 689           been removed from the &man.cd.4; driver.</para>
 690
 691         <para revision="264732">Support for
 692           <literal>BIO_DELETE</literal> has been added to &man.zfs.8;
 693           <literal>zvol</literal> volumes.</para>
 694
 695         <para revision="264734">Support for 9th generation HP host bus
 696           adapter cards has been added to &man.ciss.4;.</para>
 697
 698         <para revision="265388" contrib="sponsor" sponsor="&lsi;">The
 699           &man.mpr.4; device has been added,
 700           providing support for LSI Fusion-MPT 3 12Gb SCSI/SATA
 701           controllers.</para>
 702
 703         <para revision="265678">A new <literal>zvol</literal> property
 704           <literal>volmode</literal> and  &man.sysctl.8;
 705           <literal>vfs.zfs.vol.mode</literal> has been added to allow
 706           switching <literal>zvol</literal> between three different
 707           ways of exposing it to a user: <literal>geom</literal>,
 708           <literal>dev</literal> and <literal>none</literal>.</para>
 709
 710         <para revision="265922" contrib="sponsor" sponsor="&lsi;">The
 711           &man.mrsas.4; driver has been added, providing support for
 712           LSI MegaRAID SAS controllers.  The &man.mfi.4; driver will
 713           attach to the controller, by default.  To enable
 714           &man.mrsas.4; add <literal>hw.mfi.mrsas_enable=1</literal>
 715           to <filename>/boot/loader.conf</filename>, which turns off
 716           &man.mfi.4; device probing.</para>
 717
 718         <note>
 719           <para>At this time, the &man.mfiutil.8; utility and the &os;
 720             version of <application>MegaCLI</application> and
 721             <application>StorCli</application> do not work with
 722             &man.mrsas.4;.</para>
 723         </note>
 724
 725         <para revision="266608">Fixed accounting of
 726           <literal>BIO_FLUSH</literal> operation in &man.geom.8;
 727           <literal>GEOM_DISK</literal> class</para>
 728
 729         <para revision="266610">The &man.gstat.8; utility now has an
 730           <literal>-o</literal> option, to display
 731           <quote>other</quote> operations, such as
 732           <literal>BIO_FLUSH</literal>.</para>
 733
 734         <para revision="267084">The &man.mfi.4; driver has been
 735           updated to include support for unmapped I/O.</para>
 736
 737         <para revision="267457">The &man.hpt27xx.4; driver has been
 738           updated with various vendor-supplied bug fixes.</para>
 739
 740         <para revision="270130" contrib="sponsor"
 741           sponsor="&citrix.rd;">Support for unmapped I/O has been
 742           added to the &man.xen.4; <literal>blkfront</literal>
 743           driver.</para>
 744
 745         <para revision="259328" contrib="sponsor" sponsor="&ff;">The
 746           &man.geom.8; <literal>label</literal> class is now aware of
 747           resized partitions.  This corrects an issue where
 748           <command>geom resize</command> would resize the partition,
 749           but the label provider in <filename
 750             class="directory">/dev/gptid/</filename> would not be
 751           resized.</para>
 752
 753         <para revision="260502">The &man.gmirror.8;
 754           utility now has a <literal>resize</literal> command, making
 755           it easier to resize the size of a mirror when all of its
 756           components have been replaced.</para>
 757
 758         <para revision="262967">Support for MegaRAID Fury cards has
 759           been added to the &man.mfi.4; driver.</para>
 760
 761         <para revision="263024">The &man.aacraid.4; driver has been
 762           updated to version 3.2.5.</para>
 763
 764         <para revision="265536">The <literal>GEOM_VINUM</literal>
 765           option is now able to be built both directly into the kernel
 766           or as a &man.kldload.8; loadable module.</para>
 767
 768         <para revision="265912">The &man.geom.8;
 769           <literal>GEOM_PART</literal> class has been updated to
 770           support automatic partition resizing.  Changes to the
 771           partition size are not saved to disk until
 772           <command>gpart commit</command> is run, and prior to saving,
 773           can be reverted with <command>gpart undo</command>.</para>
 774
 775         <para revision="266220">The &man.geom.uncompress.4; module is
 776           built by default which, similar to &man.geom.uzip.4;,
 777           provides support for compressed, read-only disk
 778           images.</para>
 779
 780         <para revision="268091">Support for the
 781           <literal>disklabel64</literal> partitioning scheme has been
 782           added to &man.gpart.8;.</para>
 783
 784         <para revision="270552">A new &man.sysctl.8; and
 785           &man.loader.8; tunable,
 786           <literal>kern.geom.part.mbr.enforce_chs</literal> has been
 787           added to the &man.geom.8; <literal>MBR</literal> partition
 788           class.  When set to a non-zero value,
 789           <literal>GEOM_PART_MBR</literal> will automatically
 790           recalculate the user-specified offset and size for alignment
 791           with the disk geometry.</para>
 792
 793         <para contrib="sponsor" sponsor="&ix;">Many improvements to
 794           the CAM Target Layer (CTL):</para>
 795         <itemizedlist>
 796           <listitem>
 797             <para>Support for <literal>UNMAP</literal>, <literal>WRITE
 798                 SAME</literal>, <literal>COMPARE AND WRITE</literal>,
 799               <literal>XCOPY</literal> and some other SCSI commands
 800               was added to support VMWare VAAI and Microsoft ODX
 801               storage acceleration.</para>
 802           </listitem>
 803           <listitem>
 804             <para revision="265642">The
 805               <literal>READ</literal>/<literal>WRITE</literal> size
 806               limitations were removed by supporting multiple
 807               data moves per command.</para>
 808           </listitem>
 809           <listitem>
 810             <para revision="268556">Finer-grained per-LUN locking and
 811               multiple worker threads for better
 812               <acronym>SMP</acronym> scapability.</para>
 813           </listitem>
 814           <listitem>
 815             <para revision="269297">Memory consumption reduced by
 816               several times by disabling some never used
 817               functionality.</para>
 818           </listitem>
 819           <listitem>
 820             <para revision="269298">The maximum number of
 821               <acronym>SCSI</acronym> ports increased from 32 to
 822               128</para>
 823           </listitem>
 824           <listitem>
 825             <para revision="269429">Improved <literal>zvol</literal>
 826               integration for better performance.</para>
 827           </listitem>
 828         </itemizedlist>
 829
 830         <para revision="270810" contrib="vendor"
 831           vendor="&highpoint;">The &man.hptnr.4; driver has been
 832           updated to version 1.0.1.</para>
 833       </sect3>
 834
 835       <sect3 xml:id="fs">
 836         <title>File Systems</title>
 837
 838         <para revision="260338">The
 839           <literal>vfs.zfs.zio.use_uma</literal> &man.sysctl.8; has
 840           been re-enabled.  On multi-CPU machines with enough RAM,
 841           this can easily double &man.zfs.8; performance or reduce CPU
 842           usage in half.  It was originally disabled due to memory and
 843           <acronym>KVA</acronym> exhaustion problem reports, which
 844           should be resolved due to several change in the VM
 845           subsystem.</para>
 846
 847         <para revision="260178" contrib="vendor"
 848           vendor="&netflix;">A new flag, <literal>-R</literal>,
 849           has been added to the &man.fsck.ffs.8; utility.  When used,
 850           &man.fsck.ffs.8; will restart itself when too many critical
 851           errors have been detected.</para>
 852
 853         <para revision="263407">The &man.zfs.8; filesystem has been
 854           updated to implement <quote>bookmarks</quote>.  See
 855           &man.zfs.8; for further details.</para>
 856
 857         <para revision="266122">The &man.zfs.8; filesystem has been
 858           updated to allow tuning the minimum <quote>ashift</quote>
 859           value when creating new top-level virtual devices (vdevs).
 860           To set the minimum ashift value, for example when creating
 861           a &man.zpool.8; on <quote>Advanced Format</quote> drives,
 862           set the <literal>vfs.zfs.min_auto_ashift</literal>
 863           &man.sysctl.8; accordingly.</para>
 864
 865         <para revision="266612">The <literal>libzfs</literal> thread
 866           pool <acronym>API</acronym> has been imported from
 867           OpenSolaris, and adapted for &os;.  This change allows
 868           parallel disk scanning, which can reduce &man.zpool.8;
 869           overall import time in some workloads.</para>
 870
 871         <para revision="269651">The &man.restore.8; utility has been
 872           updated to prevent assertion failures when restoring
 873           a <acronym>UFS</acronym> filesystem dump to
 874           a <acronym>ZFS</acronym> filesystem by writing restored
 875           files in block sizes that are a multiple of 1024.</para>
 876
 877         <para revision="269774">Two &man.sysctl.8;s have been added
 878           to the &man.zfs.8; filesystem:</para>
 879
 880         <itemizedlist>
 881           <listitem>
 882             <para>
 883               <literal>vfs.zfs.mg_fragmentation_threshold</literal>:&nbsp;The
 884               percentage of the metaslab group size that should be
 885               considered eligible for allocation, unless all metaslab
 886               groups within the metaslab class have also crossed this
 887               threshold.</para>
 888           </listitem>
 889
 890           <listitem>
 891             <para>
 892               <literal>vfs.zfs.metaslab.fragmentation_threshold</literal>:&nbsp;The
 893               maximum percentage of metaslab fragmentation level to
 894               keep their active state</para>
 895           </listitem>
 896         </itemizedlist>
 897
 898         <para revision="269846">The default &man.zfs.8;
 899           <acronym>ARC</acronym> hash table size has been increased,
 900           and a new &man.loader.8; tunable,
 901           <literal>vfs.zfs.arc_average_blocksize</literal>, has been
 902           added.  Previously, the hash table could be too small, which
 903           would lead to long hash chains and limit performance for
 904           cached reads.  The
 905           <literal>vfs.zfs.arc_average_blocksize</literal> tunable
 906           allows overriding the default block size.  The previous
 907           default was 65536, and default of the new &man.loader.8;
 908           tunable is 8192.</para>
 909
 910         <para revision="270157">The Fast File System
 911           (<acronym>FFS</acronym>) has been updated to support
 912           multi-threaded soft updates.  Previously, soft updates were
 913           handled by a single thread, and as of this change, now have
 914           one thread per <acronym>FFS</acronym> mountpoint.</para>
 915
 916         <para revision="270892" contrib="sponsor" sponsor="&ff;">The
 917           new filesystem automount facility, &man.autofs.5;, has been
 918           merged from &os;-CURRENT.  The new &man.autofs.5; facility
 919           is similar to that found in other &unix;-like operating
 920           systems, such as OS&nbsp;X&trade; and Solaris&trade;.  The
 921           &man.autofs.5; facility uses a &sun;-compatible
 922           &man.auto.master.5; configuration file, and is administered
 923           with the &man.automount.8; userland utility, and the
 924           &man.automountd.8; and &man.autounmountd.8; daemons.</para>
 925       </sect3>
 926     </sect2>
 927
 928     <sect2 xml:id="userland">
 929       <title>Userland Changes</title>
 930
 931       <para revision="260177" contrib="sponsor"
 932         sponsor="&netflix;">A new flag is added to &man.camcontrol.8;,
 933         <literal>-b</literal>, which outputs the existing buses and
 934         their parents.</para>
 935
 936       <para revision="262075">The &man.newsyslog.8; utility has been
 937         updated to rotate files based on the actual file size instead
 938         of the blocks on disk.  This matches the behavior documented
 939         in &man.newsyslog.conf.5;.</para>
 940
 941       <para revision="262384">The location of the &man.rctl.8;
 942         configuration file can now be overridden in &man.rc.conf.5;.
 943         To use a non-default location, set
 944         <literal>rctl_rules</literal> in &man.rc.conf.5; to the
 945         location of the file.</para>
 946
 947       <para revision="262855">The <application>ATF</application> test
 948         suite has been updated to version 0.20.  The test suite is
 949         disabled by default in &os;&nbsp;10.1, and can be enabled by
 950         adding <literal>WITH_TESTS=yes</literal> to
 951         &man.src.conf.5;.</para>
 952
 953       <para revision="263019">The <literal>libucl</literal> library
 954         (Unified Configuration Library) has been merged from
 955         &os;-CURRENT.</para>
 956
 957       <para revision="263020">The &man.pkg.7; bootstrapping utility
 958         has been synced with the version in &os;-CURRENT.</para>
 959
 960       <para revision="263403">The &man.zfs.8; userland utility has
 961         been updated to include aliases for
 962         <command>snapshot</command>, which allows use of <command>zfs
 963           list -t snap</command> and <command>zfs
 964           snap</command>.</para>
 965
 966       <para revision="263405">The &man.zfs.8; userland utility has
 967         been updated to include a new flag to <command>zfs
 968           list</command>, <literal>-p</literal>, which when specified,
 969         prints the output in a parsable format.</para>
 970
 971       <para revision="263783">The Blowfish password format
 972         implementation updated.  Support for &dollar;2b&dollar; has
 973         been added, allowing use of passwords greater than 256
 974         characters long.</para>
 975
 976       <para revision="264497">The &man.iconv.3; library has been
 977         updated to match NetBSD, providing several bug fixes.</para>
 978
 979       <para revision="265265">The &man.date.1; utility has been
 980         updated to include a new flag, <literal>-R</literal>, which
 981         prints the date and time output as specified in RFC
 982         2822.</para>
 983
 984       <para revision="265533">The &man.bc.1; utility has been updated
 985         to version 1.1, in sync with the version in OpenBSD.</para>
 986
 987       <para revision="265604" contrib="vendor"
 988         vendor="&netflix;">The &man.pmcstat.8; utility has been
 989         updated to include a new flag, <literal>-a</literal>, which
 990         when specified, produces a full stack track on the sampled
 991         points.</para>
 992
 993       <para revision="265701">The &man.netstat.8; and &man.route.8;
 994         utilities have been updated to include a shorthand equivalent
 995         to the <literal>-f inet</literal> and <literal>-f
 996           inet6</literal> address specifiers, <literal>-4</literal>
 997         and <literal>-6</literal>, respectively.</para>
 998
 999       <para revision="265879">The &man.crypt.3; library now defaults
1000         to SHA512 for password hashing.</para>
1001
1002       <para revision="266014">The &man.gvinum.8; utility has been
1003         updated to allow forceful configuration reset with the
1004         <literal>-f</literal> flag.  Additionally, a bug that would
1005         prevent <literal>-f</literal> from properly creating
1006         a &man.gvinum.8; configuration has been fixed.</para>
1007
1008       <para revision="266029">The &man.login.conf.5; file now takes
1009         precedence over the shell-specific environment files.  In
1010         particular, the <literal>PATH</literal>,
1011         <literal>BLOCKSIZE</literal> variables are commented from
1012         <filename>/usr/share/skel/dot.profile</filename>, and the
1013         <literal>path</literal>, <literal>BLOCKSIZE</literal>, and
1014         <literal>umask</literal> variables have been commented from
1015         <filename>/usr/share/skel/dot.cshrc</filename>.</para>
1016
1017       <para revision="266272">The &man.binmiscctl.8; userland utility
1018         and related image activator features have been merged from
1019         &os;-CURRENT.</para>
1020
1021       <para revision="266279">The &man.ps.1; utility has been
1022         updated to include the <literal>-J</literal> flag, used to
1023         filter output by matching &man.jail.8; IDs and names.
1024         Additionally, argument <literal>0</literal> can be used to
1025         <literal>-J</literal> to only list processes running on the
1026         host system.</para>
1027
1028       <para revision="266280">The &man.top.1; utility has been updated
1029         to filter by &man.jail.8; ID or name, in followup to the
1030         &man.ps.1; change in <literal>r265229</literal>.</para>
1031
1032       <para revision="266610">The &man.gstat.8; utility has been
1033         updated to include a new flag, <literal>-o</literal>.  When
1034         set, &man.gstat.8; will display statistics for operations
1035         such as <literal>BIO_FLUSH</literal>.</para>
1036
1037       <para revision="266632">The &man.fetch.3; library has been
1038         updated to look for root <acronym>SSL</acronym> certificates
1039         in <filename class="directory">/usr/local/etc/ssl/</filename>
1040         before <filename
1041           class="directory">/etc/ssl/</filename>.</para>
1042
1043       <para revision="266715">The &man.clang.1;/llvm suite has been
1044         updated to version 3.4.1.</para>
1045
1046       <para revision="266816">The Blowfish password format
1047         has been changed to &dollar;2b&dollar; by default.</para>
1048
1049       <para revision="266888">The amount of data collected for
1050         &man.hwpmc.4; has been updated to work with modern processors
1051         and larger amounts of available memory.</para>
1052
1053       <para revision="266890">The &man.pmcstat.8; utility has been
1054         updated to include a new flag, <literal>-l</literal>, which
1055         ends event collection after the specified number of
1056         seconds.</para>
1057
1058       <para revision="266953">The &man.mergemaster.8; utility has
1059         been updated to avoid printing
1060         <quote><filename>/var/tmp/temproot</filename>
1061           disappeared</quote> if there is nothing to compare.</para>
1062
1063       <para revision="267056">The &os; installer, &man.bsdinstall.8;,
1064         has been updated to include optional
1065         &man.geli.8;-encrypted or &man.gmirror.8;-mirrored swap
1066         devices when installing onto a full &man.zfs.8; filesystem.
1067         Additionally, the parent &man.zfs.8; dataset is now configured
1068         with <literal>lz4</literal> compression enabled.</para>
1069
1070       <para revision="267113">The default &man.newsyslog.conf.5; now
1071         includes files in the
1072         <filename>/etc/newsyslog.conf.d/</filename> and
1073         <filename>/usr/local/etc/newsyslog.conf.d/</filename>
1074         directories by default for &man.newsyslog.8;.</para>
1075
1076       <para revision="267161">The &man.realpath.1; utility has been
1077         updated to return <literal>ENOTDIR</literal> on paths
1078         components <quote>.</quote> and <quote>..</quote> that are
1079         not directories, such as <filename
1080           class="directory">/dev/null/.</filename> or <filename
1081           class="directory">/dev/null/..</filename>.</para>
1082
1083       <para revision="267236">A new flag, <quote>onifconsole</quote>
1084         has been added to <filename>/etc/ttys</filename>.  This allows
1085         the system to provide a login prompt via serial console if the
1086         device is an active kernel console, otherwise it is equivalent
1087         to <literal>off</literal>.</para>
1088
1089       <para revision="267341">Support for legacy
1090         <acronym>PCI</acronym> devices has been removed from
1091         &man.bhyve.8;.</para>
1092
1093       <para revision="267450">The &man.bhyve.8; userland utility
1094         has been updated to include SMBIOS support.  A new flag has
1095         been added, <literal>-U</literal>, which allows specifying the
1096         UUID of the guest in the System Information structure.</para>
1097
1098       <para revision="267734">The &os;&nbsp;Project has migrated
1099         from the <application>GNATS</application> bug tracking system
1100         to <application>Bugzilla</application>.  The &man.send-pr.1;
1101         utility used for submitting problem reports has been replaced
1102         with a stub shell script that instructs to use the Bugzilla
1103         web interface.</para>
1104
1105       <para revision="267747">The &man.patch.1; utility has been
1106         updated to include a <literal>--dry-run</literal> flag, which
1107         is equivalent to <literal>--check</literal> and
1108         <literal>-C</literal>.</para>
1109
1110       <para revision="267878">A bug in &man.bsdgrep.1; that would
1111         prevent patterns from being matched under certain conditions
1112         has been fixed.</para>
1113
1114       <para revision="267979">The &man.procstat.1; utility has been
1115         updated to include two new flags, <literal>-r</literal> and
1116         <literal>-H</literal>.  When <literal>-r</literal> is
1117         specified, &man.procstat.1; will print current resource usage
1118         about the process(es).  When <literal>-H</literal> is
1119         specified, &man.procstat.1; will print information about
1120         threads rather than the process(es).</para>
1121
1122       <note>
1123         <para>The <literal>-H</literal> flag is currently only used
1124           with <literal>-r</literal> to display resource usage for
1125           individual threads, rather than the entire process.</para>
1126       </note>
1127
1128       <para revision="268019">The &man.sed.1; utility has been
1129         updated to include a new flag, <literal>-u</literal>, which
1130         enables unbuffered output when specified.</para>
1131
1132       <para revision="268161">The &man.mkimg.1; utility has been
1133         merged from &os;-CURRENT.</para>
1134
1135       <para revision="268700" contrib="sponsor"
1136         sponsor="&spectralogic;">The &man.camcontrol.8; has been
1137         updated to include a new <literal>persist</literal> command,
1138         which allows issuing <command>SCSI PERSISTENT RESERVE
1139           IN</command> and <command>SCSI PERSISTENT RESERVE
1140           OUT</command>.</para>
1141
1142       <para revision="268791">The &man.gstat.8; utility has been
1143         updated to include a new flag, <literal>-p</literal>, which
1144         displays only physical providers when specified.</para>
1145
1146       <para revision="268903">The &man.kldstat.8; utility has been
1147         updated to allow <literal>-q</literal> to be specified when
1148         also specifying <literal>-n
1149           <replaceable>module.ko</replaceable></literal>.</para>
1150
1151       <para revision="269177">The &man.mkimg.1; utility has been
1152         updated to include support for both fixed- and
1153         dynamically-allocated images for the <acronym>VHD</acronym>
1154         and <acronym>VMDK</acronym> formats.</para>
1155
1156       <para revision="269220">The &man.random.4; entropy collection
1157         script, <filename>/usr/libexec/save-entropy</filename>, no
1158         longer runs within &man.jail.8; environments.</para>
1159
1160       <para revision="269397">The &man.bhyve.8; wrapper script,
1161         <filename>/usr/share/examples/bhyve/vmrun.sh</filename>,
1162         has been synced with &os;-CURRENT.</para>
1163
1164       <para>This update includes:</para>
1165
1166       <itemizedlist>
1167         <listitem>
1168           <para>A new flag, <literal>-e</literal>, has been added,
1169             which is used to set &man.loader.8; environment
1170             variables.</para>
1171         </listitem>
1172
1173         <listitem>
1174           <para>A new flag, <literal>-C</literal>, has been added,
1175             which is used to specify the guest console device.</para>
1176         </listitem>
1177
1178         <listitem>
1179           <para>A new flag, <literal>-H</literal>, has been added,
1180             which is used to pass the host path to
1181             &man.bhyveload.8;.</para>
1182         </listitem>
1183
1184         <listitem>
1185           <para>Support for multiple disk and &man.tap.4; devices
1186             has been added.</para>
1187         </listitem>
1188
1189         <listitem>
1190           <para>The <literal>-I</literal> flag has been
1191             removed.</para>
1192         </listitem>
1193       </itemizedlist>
1194
1195       <para revision="269398">The &man.nfsd.8; server update to 4.1,
1196         adding support for RFC5661, has merged from
1197         &os;-CURRENT.</para>
1198
1199       <para revision="269432" arch="ia64">The serial terminals
1200         <filename>ttyu0</filename> and <filename>ttyu1</filename> have
1201         been updated to <literal>onifconsole</literal> by default in
1202         &man.ttys.5;, which either can be the serial console,
1203         depending on the platform.</para>
1204
1205       <para revision="269800">The &man.ping6.8; utility has been
1206         updated to reset <literal>itimer</literal> when the maximum
1207         number of packets to send have been reached.  This prevents
1208         &man.ping6.8; from exiting when the interval in set to a small
1209         value and a low number of packets to send has been
1210         specified.</para>
1211
1212       <para revision="269805">The &man.jail.8; utility has been
1213         updated to support extra &man.ifconfig.8; arguments for the
1214         <literal>ip4.addr</literal> and <literal>ip6.addr</literal>
1215         parameters.  This change allows &man.carp.4; interfaces to
1216         be used within the &man.jail.8;.</para>
1217
1218       <para revision="269946">Support for generating and compiling
1219         <acronym>USDT</acronym> <application>DTrace</application>
1220         probes has been improved.  <application>DTrace</application>
1221         <acronym>USDT</acronym> files are now handled similar to
1222         &man.lex.1; and &man.yacc.1; files, meaning support for
1223         handling <application>D</application> files as part of the
1224         build process is built into the <literal>SRCS</literal>
1225         &man.make.1; environment variable.</para>
1226
1227       <para revision="269968">The &man.iscsictl.8; utility has been
1228         updated to include a new flag, <literal>-M</literal>, which
1229         allows modifying the <acronym>iSCSI</acronym> session
1230         parameters without requiring the session to be removed and
1231         added back.</para>
1232
1233       <para revision="270043">The &man.mount.nfs.8; utility has been
1234         updated to support specifying the NFS version as
1235         a <literal>key=<replaceable>value</replaceable></literal> pair
1236         argument to the <literal>-o</literal> flag.  For example, to
1237         specify NFS version 4, the syntax to use is
1238         <literal>-o&nbsp;vers=4</literal>.</para>
1239
1240       <para revision="270242" contrib="sponsor"
1241         sponsor="&spectralogic;">The &man.devd.8; client socket type
1242         has been changed to <literal>SOCK_SEQPACKET</literal>,
1243         providing sequential packet support.</para>
1244
1245       <para revision="270401">Support for the <quote>account</quote>
1246         facility has been added to the &man.pam.group.8;
1247         module.</para>
1248
1249       <para revision="270890">The &man.pathchk.1; utility has been
1250         updated to ensure bytes greater than or equal to 128 are
1251         considered non-portable.</para>
1252
1253       <para revision="270997" contrib="vendor" vendor="&freenas;">The
1254         &man.zdb.8; utility is now included in the set of applications
1255         installed in the <filename
1256           class="directory">/rescue</filename> environment, making it
1257         possible to examine &man.zfs.8; filesystems when <filename
1258           class="directory">/usr</filename> is unavailable.</para>
1259
1260       <para>Several <literal>libc</literal> improvements have been
1261         merged from illumos&trade; and &apple;, providing better
1262         internationalization support and &posix; compliance.</para>
1263
1264       <sect3 xml:id="rc-scripts">
1265         <title><filename>/etc/rc.d</filename> Scripts</title>
1266
1267         <para revision="264438">The <filename>network.subr</filename>
1268           &man.rc.8; script has been updated to loosen the requirement
1269           of listing network aliases in numeric order.  Previously,
1270           a network alias of
1271           <literal>_alias<replaceable>2</replaceable></literal>
1272           would not be created if
1273           <literal>_alias<replaceable>1</replaceable></literal> was
1274           not defined.</para>
1275
1276         <para revision="268098">The &man.service.8; utility has been
1277           updated to check that the &man.rc.d.8; directory exists
1278           before traversing the directory.</para>
1279
1280         <para revision="259141">A regression introduced in
1281           &os;&nbsp;10.0-RELEASE that would prevent proper IPv6
1282           allocation via the &man.jail.8; &man.rc.8; startup script
1283           has been fixed.</para>
1284
1285         <para revision="264438">The &man.rc.8; restriction requiring
1286           &man.mdconfig.8; devices defined in &man.rc.conf.5; to be
1287           listed sequentially has been removed.</para>
1288
1289         <para revision="262566">The &man.sshd.8; &man.rc.d.8; startup
1290           script now generates <literal>ED25519</literal> &man.sshd.8;
1291           host keys if keys do not already exist when
1292           <literal>ssh_keygen_alg()</literal> is invoked.</para>
1293
1294         <para revision="271095">Support for &man.vt.4; keyboard maps
1295           has been added to the <filename>syscons</filename>
1296           &man.rc.d.8; startup script.</para>
1297       </sect3>
1298     </sect2>
1299
1300     <sect2 xml:id="contrib">
1301       <title>Contributed Software</title>
1302
1303       <para revision="263285">The &man.xz.1; utility has been updated
1304         to a post-5.0.5 snapshot.</para>
1305
1306       <para revision="264377"><application>OpenSSH</application> has
1307         been updated to version 6.6p1.</para>
1308
1309       <para revision="264911">The &man.nc.1; utility has been updated
1310         to match the version in OpenBSD 5.5.</para>
1311
1312       <para revision="266692"><application>Sendmail</application>
1313         has been updated to 8.14.9.</para>
1314
1315       <para revision="268515">The &man.file.1; utility and
1316         &man.libmagic.3; library have been updated to 5.19.</para>
1317
1318       <para revision="268899">The &man.byacc.1; parser has been
1319         updated to version 20140422.</para>
1320
1321       <para revision="269024" contrib="sponsor"
1322         sponsor="&darpa_afrl;">The &man.lldb.1; debugging library has
1323         been updated to the r202189 snapshot.</para>
1324
1325       <para revision="269257">The &man.unbound.8; caching resolver and
1326         <literal>ldns</literal> have been updated to version
1327         1.4.22.</para>
1328
1329       <para revision="269686"><application>OpenSSL</application> has
1330         been updated to version 1.0.1i.</para>
1331
1332       <para revision="269847">The <quote>lite</quote> version of
1333         <application>Subversion</application> included in the
1334         &os;&nbsp;base system and its dependencies have been
1335         updated:</para>
1336
1337       <itemizedlist>
1338         <listitem>
1339           <para><application>apr</application> has been
1340             updated to version 1.5.1.</para>
1341         </listitem>
1342
1343         <listitem>
1344           <para><application>apr-util</application> has been
1345             updated to version 1.5.3.</para>
1346         </listitem>
1347
1348         <listitem>
1349           <para><application>serf</application> has been
1350             updated to version 1.3.7.</para>
1351         </listitem>
1352
1353         <listitem>
1354           <para><application>svnlite</application> has been
1355             updated to version 1.8.10.</para>
1356         </listitem>
1357       </itemizedlist>
1358
1359       <para revision="270026">The &man.nvi.1; editor has been
1360         update to version 2.1.2-c80f493b038.</para>
1361
1362       <para revision="270031">The &man.fparseln.3; library has
1363         been updated to version 1.7.</para>
1364
1365       <para revision="270415">The <application>lukemftpd</application>
1366         <acronym>FTP</acronym> server has been removed from the
1367         &os;&nbsp;base system.</para>
1368
1369       <para revision="270817">The timezone database has been updated
1370         to version tzdata2014f.</para>
1371     </sect2>
1372
1373     <sect2 xml:id="ports">
1374       <title>Ports/Packages Collection Infrastructure</title>
1375
1376       <para>&nbsp;</para>
1377
1378     </sect2>
1379
1380     <sect2 xml:id="releng">
1381       <title>Release Engineering and Integration</title>
1382
1383       <para revision="263028">The &man.services.mkdb.8; utility has
1384         been updated to include endianness awareness, allowing the
1385         <filename>services.db</filename> database to be created as
1386         part of the release build, regardless of native- or
1387         cross-built releases.</para>
1388     </sect2>
1389
1390     <sect2 xml:id="doc">
1391       <title>Documentation</title>
1392
1393       <para>&nbsp;</para>
1394
1395     </sect2>
1396   </sect1>
1397
1398   <sect1 xml:id="upgrade">
1399     <title>Upgrading from Previous Releases of &os;</title>
1400
1401     <para arch="amd64,i386">Binary upgrades between RELEASE versions
1402       (and snapshots of the various security branches) are supported
1403       using the &man.freebsd-update.8; utility.  The binary upgrade
1404       procedure will update unmodified userland utilities, as well as
1405       unmodified <filename>GENERIC</filename> kernel distributed as
1406       a part of an official &os; release.  The &man.freebsd-update.8;
1407       utility requires that the host being upgraded have Internet
1408       connectivity.</para>
1409
1410     <para>Source-based upgrades (those based on recompiling the &os;
1411       base system from source code) from previous versions are
1412       supported, according to the instructions in
1413       <filename>/usr/src/UPDATING</filename>.</para>
1414
1415     <important>
1416       <para>Upgrading &os; should only be attempted after
1417         backing up <emphasis>all</emphasis> data and configuration
1418         files.</para>
1419     </important>
1420   </sect1>
1421 </article>