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

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  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       <para revision="271205">The &os;/&arch.powerpc; ATI driver
 229         has been updated to support enabling and disabling the
 230         Radeon&nbsp;9700 backlight, found in the
 231         &apple;&nbsp;PowerBook&trade;&nbsp;G4.</para>
 232
 233       <sect3 xml:id="kernel-virtualization">
 234         <title>Virtualization Support</title>
 235
 236         <para revision="259450">Support for &microsoft; Hyper-V
 237           has been added to &os;/i386 as loadable modules, however
 238           not available in the <filename>GENERIC</filename> kernel
 239           configuration.</para>
 240
 241         <para revision="261090">The &man.bhyve.4; hypervisor now
 242           supports soft power-off functionality via the ACPI S5
 243           state.</para>
 244
 245         <para revision="267399">Support for &os;/i386 guests has been
 246           added to &man.bhyve.4;.</para>
 247
 248         <para revision="267427">Support for virtualized
 249           <literal>XSAVE</literal> has been added to &man.bhyve.4;,
 250           allowing guest operating systems to use
 251           <literal>XSAVE</literal> and
 252           <literal>XSAVE</literal>-enabled features, such as
 253           <acronym>AVX</acronym>.</para>
 254
 255         <para revision="268932">The &man.bhyve.4; hypervisor now
 256           supports booting from a &man.zfs.8; filesystem.</para>
 257
 258         <para revision="268933">A new driver, &man.virtio_random.4;,
 259           has been added, which allows &os; virtual machines to
 260           harvest entropy from the hypervisor.</para>
 261
 262         <para revision="270159">The &man.bhyve.4; hypervisor has been
 263           synced with the version in &os;-CURRENT.</para>
 264
 265         <para>A number of enhancements have been added, and several
 266           bug fixes, including:</para>
 267
 268         <itemizedlist>
 269           <listitem>
 270             <para>Post-mortem debugging has been added when
 271               a guest virtual machine exits with an
 272               <quote><acronym>EPT</acronym> Misconfiguration</quote>
 273               error.</para>
 274           </listitem>
 275
 276           <listitem>
 277             <para>The hypervisor &man.virtio.4; <acronym>API</acronym>
 278               has been expanded from 32- to 64-bit.</para>
 279           </listitem>
 280
 281           <listitem>
 282             <para>Support for identifying capabilities of the virtual
 283               <acronym>CPU</acronym> has been added.</para>
 284           </listitem>
 285
 286           <listitem>
 287             <para>Support for emulating legacy x86 task
 288               switching has been added.</para>
 289           </listitem>
 290
 291           <listitem>
 292             <para>Support to list the VT-x features in base kernel
 293               &man.dmesg.8; has been added.</para>
 294           </listitem>
 295
 296           <listitem>
 297             <para>Support for extended PCI configuration space
 298               has been added.</para>
 299           </listitem>
 300         </itemizedlist>
 301       </sect3>
 302
 303       <sect3 xml:id="kernel-arm">
 304         <title>ARM Support</title>
 305
 306         <para revision="259355">The <filename>WANDBOARD</filename>
 307           kernel configuration file has been added.</para>
 308
 309         <para revision="265067">Boot devices may now be specified by
 310           setting a u-boot environment variable.  If a boot device is
 311           not specified, the probe mechanism will be used.  To specify
 312           the boot device, set the
 313           <literal>loaderdev=<replaceable>device</replaceable></literal>
 314           u-boot environment variable.</para>
 315
 316         <para revision="266000">The <literal>nexus(4)</literal> driver
 317           has been updated to include <quote>Flattened Device
 318             Tree</quote> support, replacing the &man.fdtbus.4; driver
 319           in most cases.</para>
 320
 321         <para revision="266105">The &man.gpioiic.4; and
 322           &man.gpioled.4; have been merged from &os;-CURRENT.</para>
 323
 324         <para>Support for hardware floating point was added to the
 325           kernel, and enabled by default in the configuration files
 326           for all platforms that contain the required hardware.</para>
 327
 328         <para><application>C++</application> exception handling now
 329           works with <application>GCC</application>.</para>
 330
 331         <para>Support for <acronym>SMP</acronym> was added to the
 332           kernel, and enabled by default in the configuration files
 333           for all platforms that contain multi-core CPUs.</para>
 334
 335         <para>Support was added for:</para>
 336
 337         <itemizedlist>
 338           <listitem>
 339             <para>CHROMEBOOK (Samsung Exynos 5250)</para>
 340           </listitem>
 341
 342           <listitem>
 343             <para>COLIBRI (Freescale Vybrid)</para>
 344           </listitem>
 345
 346           <listitem>
 347             <para>COSMIC (Freescale Vybrid)</para>
 348           </listitem>
 349
 350           <listitem>
 351             <para>IMX53-QSB (Freescale i.MX53)</para>
 352           </listitem>
 353
 354           <listitem>
 355             <para>QUARTZ (Freescale Vybrid)</para>
 356           </listitem>
 357
 358           <listitem>
 359             <para>RADXA (Rockchip rk30xx)</para>
 360           </listitem>
 361
 362           <listitem>
 363             <para>WANDBOARD (Freescale i.MX6)</para>
 364           </listitem>
 365         </itemizedlist>
 366
 367         <para>An <acronym>I2C</acronym> driver was added for
 368           the RaspberryPi.</para>
 369
 370         <para>Drivers have been added to support <acronym>TI</acronym>
 371           platforms, such as BEAGLEBONE and PANDABOARD:</para>
 372
 373         <itemizedlist>
 374           <listitem>
 375             <para>PRUSS (Programmable Realtime Unit Subsystem)</para>
 376           </listitem>
 377
 378           <listitem>
 379             <para>MBOX (Mailbox hardware)</para>
 380           </listitem>
 381
 382           <listitem>
 383             <para>SDHCI (new faster driver for
 384               <acronym>MMC</acronym>/<acronym>SD</acronym>
 385               storage)</para>
 386           </listitem>
 387
 388           <listitem>
 389             <para>PPS (Pulse Per Second input on a
 390               <acronym>GPIO</acronym>/timer pin)</para>
 391           </listitem>
 392
 393           <listitem>
 394             <para>PWM (Pulse Width Modulation output)</para>
 395           </listitem>
 396
 397           <listitem>
 398             <para>ADC (Analog to Digital converter)</para>
 399           </listitem>
 400         </itemizedlist>
 401       </sect3>
 402
 403       <sect3 xml:id="boot">
 404         <title>Boot Loader Changes</title>
 405
 406         <para revision="262701">A kernel selection menu has been added
 407           to &man.loader.8;.  If the <quote>beastie menu</quote> is
 408           enabled, the kernel to boot may be selected from the kernel
 409           selection menu.  Additional kernels may be listed in
 410           &man.loader.conf.5; as a comma- or space-separated list.  By
 411           default, <literal>kernel</literal> and
 412           <literal>kernel.old</literal> are listed.</para>
 413
 414         <para revision="271130" contrib="sponsor" sponsor="&ff;">The
 415           <filename class="directory">sys/boot/</filename> sources
 416           have been rearranged, moving &man.libstand.3; to a directory
 417           indicating the library is built as 32-bit.</para>
 418
 419         <para revision="271135" contrib="sponsor" sponsor="&ff;">The
 420           &man.libstand.3; library has been updated to produce
 421           a 64-bit shared library for the &os;/&arch.amd64; and
 422           &os;/&arch.powerpc64; architectures.</para>
 423
 424         <para revision="271135" contrib="sponsor"
 425           sponsor="&ff;">Initial support for <acronym>UEFI</acronym>
 426           boot has been added.</para>
 427
 428         <para revision="271136" contrib="sponsor" sponsor="&ff;">Three
 429           new files are installed to <filename
 430             class="directory">/boot</filename>, supporting
 431           <acronym>UEFI</acronym> boot:</para>
 432
 433         <itemizedlist>
 434           <listitem>
 435             <para><filename>boot1.efi</filename>: The
 436               <acronym>UEFI</acronym> first stage bootstrap
 437               file.</para>
 438           </listitem>
 439
 440           <listitem>
 441             <para><filename>boot1.efifat</filename>:
 442               A <acronym>FAT</acronym> filesystem image containing
 443               an <acronym>EFI</acronym> system partition.</para>
 444           </listitem>
 445
 446           <listitem>
 447             <para><filename>loader.efi</filename>: The third stage
 448               bootstrap file.</para>
 449           </listitem>
 450         </itemizedlist>
 451       </sect3>
 452
 453       <sect3 xml:id="proc">
 454         <title>Hardware Support</title>
 455
 456         <para>&nbsp;</para>
 457
 458         <sect4 xml:id="mm">
 459           <title>Multimedia Support</title>
 460
 461           <para>&nbsp;</para>
 462
 463         </sect4>
 464
 465         <sect4 xml:id="net-if">
 466           <title>Network Interface Support</title>
 467
 468           <para revision="259453">Support for Ralink RT5370 and
 469             RT5372 chipsets has been added to the &man.run.4;
 470             driver.</para>
 471
 472           <para revision="260120">Firmware for the &man.run.4; driver
 473             has been updated to version 0.33.</para>
 474
 475           <para revision="261868">Support for the Ralink RT3593
 476             chipset has been added to the &man.run.4; driver.</para>
 477
 478           <para revision="261972">The &man.nve.4; driver is now
 479             deprecated, and the &man.nfe.4; driver should be used
 480             instead.</para>
 481
 482           <para revision="262137">Support for the &man.axge.4; driver
 483             has been added.  This driver supports the ASIX AX88178A
 484             and AX88179 USB ethernet adapters.  The AX88178A supports
 485             USB 2.0, and the AX88179 supports USB 2.0 and 3.0.</para>
 486
 487           <para revision="262363">The &man.urndis.4; driver has been
 488             imported from OpenBSD.</para>
 489
 490           <para revision="264866">Support for multiple
 491             transmitter/receiver queues has been added to the
 492             &man.vmx.4; driver.</para>
 493
 494           <note>
 495             <para>The &os;&nbsp;guest operating system must have
 496               <acronym>MSIX</acronym> enabled as a prerequisite for
 497               multiple queues.</para>
 498           </note>
 499
 500           <para revision="265345">Support for the ASUS USB-N10 Nano
 501             wireless card has been added to the &man.urtwn.4;
 502             driver.</para>
 503
 504           <para revision="266212">Transmission checksum offloading has
 505             been disabled for the RTL8168C and RTL8168CP chipsets in
 506             the &man.re.4; driver for TCP and UDP frames.  This is
 507             due to a report of UDP datagrams with IP options
 508             generating corrupt frames.</para>
 509
 510           <para revision="266578">Preliminary support has been added
 511             to the &man.urtwn.4; driver for the Realtek RTL8188EUS and
 512             RTL8188ETV chipsets.</para>
 513
 514           <para revision="267694">A bug in the fast receiver buffer
 515             recycle path has been fixed in the &man.cxgbe.4;
 516             driver.</para>
 517
 518           <para revision="267849" contrib="vendor"
 519             vendor="&chelsio;">The bundled &man.cxgbe.4; firmware for
 520             T4 and T5 cards has been updated to version
 521             1.11.27.0.</para>
 522
 523           <para revision="269196">The &man.em.4; driver has been
 524             updated to version 7.4.2.</para>
 525
 526           <para revision="269975">The &man.ixgbe.4; tunables have been
 527             renamed to match their &man.sysctl.8; counterparts:</para>
 528
 529           <informaltable frame="none" pgwide="0">
 530             <tgroup cols="2">
 531               <colspec colwidth="1*"/>
 532               <colspec colwidth="1*"/>
 533               <thead>
 534                 <row>
 535                   <entry>Old Name</entry>
 536                   <entry>New Name</entry>
 537                 </row>
 538               </thead>
 539
 540               <tbody>
 541                 <row>
 542                   <entry><literal>hw.ixgbe.enable_aim</literal></entry>
 543                   <entry><literal>hw.ix.enable_aim</literal></entry>
 544                 </row>
 545
 546                 <row>
 547                   <entry><literal>hw.ixgbe.max_interrupt_rate</literal></entry>
 548                   <entry><literal>hw.ix.max_interrupt_rate</literal></entry>
 549                 </row>
 550
 551                 <row>
 552                   <entry><literal>hw.ixgbe.rx_process_limit</literal></entry>
 553                   <entry><literal>hw.ix.rx_process_limit</literal></entry>
 554                 </row>
 555
 556                 <row>
 557                   <entry><literal>hw.ixgbe.tx_process_limit</literal></entry>
 558                   <entry><literal>hw.ix.tx_process_limit</literal></entry>
 559                 </row>
 560
 561                 <row>
 562                   <entry><literal>hw.ixgbe.enable_msix</literal></entry>
 563                   <entry><literal>hw.ix.enable_msix</literal></entry>
 564                 </row>
 565
 566                 <row>
 567                   <entry><literal>hw.ixgbe.num_queues</literal></entry>
 568                   <entry><literal>hw.ix.num_queues</literal></entry>
 569                 </row>
 570
 571                 <row>
 572                   <entry><literal>hw.ixgbe.txd</literal></entry>
 573                   <entry><literal>hw.ix.txd</literal></entry>
 574                 </row>
 575
 576                 <row>
 577                   <entry><literal>hw.ixgbe.rxd</literal></entry>
 578                   <entry><literal>hw.ix.rxd</literal></entry>
 579                 </row>
 580
 581                 <row>
 582                   <entry><literal>hw.ixgbe.unsupported_sfp</literal></entry>
 583                   <entry><literal>hw.ix.unsupported_sfp</literal></entry>
 584                 </row>
 585               </tbody>
 586             </tgroup>
 587           </informaltable>
 588
 589           <para>Be sure to update &man.loader.conf.5; if using the
 590             old tunables before upgrading to
 591             &os;&nbsp;&release.current;.</para>
 592
 593           <para revision="270061">The &man.if.nf10bmac.4; driver has
 594             been merged from &os;-CURRENT to support the NetFPGA-10G
 595             Embedded CPU Ethernet Core.</para>
 596
 597           <para revision="270297">The &man.cxgbe.4; driver has been
 598             updated to support &man.netmap.4; for the T5 10G/40G
 599             cards.</para>
 600
 601           <para revision="270509">The &man.vtnet.4; driver has been
 602             updated to support &man.netmap.4;.</para>
 603
 604           <para revision="270514">The &man.urtwn.4; driver has been
 605             updated to support the ASUS USB-AC51 wireless card.</para>
 606
 607           <para revision="270631">The &intel;&nbsp;XL710 ethernet
 608             controller driver, <literal>ixlv(4)</literal>, has been
 609             merged from &os;-CURRENT.</para>
 610         </sect4>
 611       </sect3>
 612
 613       <sect3 xml:id="net-proto">
 614         <title>Network Protocols</title>
 615
 616         <para revision="265946">Support for the UDP-Lite protocol
 617           (RFC 3828) has been added to the IPv4 and IPv6
 618           stacks.</para>
 619
 620         <para revision="267771">A bug in &man.sctp.4; that would allow
 621           two listening sockets bound to the same port has been
 622           fixed.</para>
 623
 624         <para contrib="sponsor" sponsor="&ix;">Kernel RPC code, which
 625           is a base of NFS server took multiple optimizations, that
 626           significantly improved its performance and
 627           <acronym>SMP</acronym> scapability.</para>
 628
 629         <para revision="269065" contrib="sponsor" sponsor="&ff;">The
 630           <acronym>iSCSI</acronym> initiator has been updated to
 631           support redirection handling when an
 632           <acronym>iSCSI</acronym> device is configured with multiple
 633           <acronym>IP</acronym> addresses across different network
 634           interfaces.  Previously, clients connecting to
 635           such <acronym>iSCSI</acronym> devices could require
 636           additional client-side configuration.</para>
 637
 638         <para revision="265523" contrib="sponsor" sponsor="&ff;">A new
 639           &man.sysctl.8;,
 640           <literal>kern.iscsi.fail_on_disconnection</literal>, has
 641           been added, which allows <acronym>iSCSI</acronym> clients to
 642           remove the attached disk device when the connection to the
 643           target is dropped, where previously I/O would stop until the
 644           connection is restored.</para>
 645
 646         <para revision="265524" contrib="sponsor" sponsor="&ff;">The
 647           <acronym>iSCSI</acronym> transmit code has been optimized
 648           to coalesce <acronym>PDUs</acronym> and avoid lock
 649           contention.</para>
 650
 651         <para revision="265524" contrib="sponsor"
 652           sponsor="&ix;">Several performance optimizations have been
 653           made to the <acronym>iSCSI</acronym> subsystem, including
 654           deferring wakeup until enough data has been received to
 655           read or write a file, reducing <acronym>CPU</acronym> usage
 656           and throughput performance with large I/O workloads.</para>
 657
 658         <para revision="263720" contrib="sponsor"
 659           sponsor="&ff;">Support for hostname- and IP-based access
 660           restriction has been added to the <acronym>iSCSI</acronym>
 661           &man.ctld.8; daemon.</para>
 662       </sect3>
 663
 664       <sect3 xml:id="disks">
 665         <title>Disks and Storage</title>
 666
 667         <para revision="260385" contrib="sponsor" sponsor="&ix;">The
 668           &man.geom.4; subsystem has been updated to support I/O
 669           direct dispatch.  When safety requirements are met, it
 670           enables avoiding passing I/O requests to GEOM
 671           <literal>g_up</literal>/<literal>g_down</literal> thread,
 672           executing them directly in the caller context, avoiding
 673           CPU bottlenecks in
 674           <literal>g_up</literal>/<literal>g_down</literal> threads,
 675           plus avoid several context switches per I/O.</para>
 676
 677         <para revision="260385" contrib="sponsor" sponsor="&ix;">The
 678           &man.geom.4; RAID driver has been
 679           updated to support unmapped I/O.</para>
 680
 681         <para revision="260387" contrib="sponsor" sponsor="&ix;">The
 682           &man.cam.4; subsystem has been updated to support
 683           finer-grained locking, direct dispatch and multi-queue,
 684           which combined with &man.geom.4; direct dispatch, reduces
 685           lock congestion and improves <acronym>SMP</acronym>
 686           scalability of the SCSI/ATA stack.</para>
 687
 688         <para revision="260478">The &man.geom.8;
 689           <literal>GEOM_MULTIPATH</literal> class has been updated to
 690           support automatic live partition resizing.</para>
 691
 692         <para revision="260857">The &man.virtio_blk.4; driver has been
 693           updated to support unmapped I/O.</para>
 694
 695         <para revision="260858">The &man.virtio_scsi.4; driver has
 696           been updated to support unmapped I/O.</para>
 697
 698         <para revision="264522">Support for LUN-based CD changers has
 699           been removed from the &man.cd.4; driver.</para>
 700
 701         <para revision="264732">Support for
 702           <literal>BIO_DELETE</literal> has been added to &man.zfs.8;
 703           <literal>zvol</literal> volumes.</para>
 704
 705         <para revision="264734">Support for 9th generation HP host bus
 706           adapter cards has been added to &man.ciss.4;.</para>
 707
 708         <para revision="265388" contrib="sponsor" sponsor="&lsi;">The
 709           &man.mpr.4; device has been added,
 710           providing support for LSI Fusion-MPT 3 12Gb SCSI/SATA
 711           controllers.</para>
 712
 713         <para revision="265678">A new <literal>zvol</literal> property
 714           <literal>volmode</literal> and  &man.sysctl.8;
 715           <literal>vfs.zfs.vol.mode</literal> has been added to allow
 716           switching <literal>zvol</literal> between three different
 717           ways of exposing it to a user: <literal>geom</literal>,
 718           <literal>dev</literal> and <literal>none</literal>.</para>
 719
 720         <para revision="265922" contrib="sponsor" sponsor="&lsi;">The
 721           &man.mrsas.4; driver has been added, providing support for
 722           LSI MegaRAID SAS controllers.  The &man.mfi.4; driver will
 723           attach to the controller, by default.  To enable
 724           &man.mrsas.4; add <literal>hw.mfi.mrsas_enable=1</literal>
 725           to <filename>/boot/loader.conf</filename>, which turns off
 726           &man.mfi.4; device probing.</para>
 727
 728         <note>
 729           <para>At this time, the &man.mfiutil.8; utility and the &os;
 730             version of <application>MegaCLI</application> and
 731             <application>StorCli</application> do not work with
 732             &man.mrsas.4;.</para>
 733         </note>
 734
 735         <para revision="266608">Fixed accounting of
 736           <literal>BIO_FLUSH</literal> operation in &man.geom.8;
 737           <literal>GEOM_DISK</literal> class</para>
 738
 739         <para revision="266610">The &man.gstat.8; utility now has an
 740           <literal>-o</literal> option, to display
 741           <quote>other</quote> operations, such as
 742           <literal>BIO_FLUSH</literal>.</para>
 743
 744         <para revision="267084">The &man.mfi.4; driver has been
 745           updated to include support for unmapped I/O.</para>
 746
 747         <para revision="267457">The &man.hpt27xx.4; driver has been
 748           updated with various vendor-supplied bug fixes.</para>
 749
 750         <para revision="270130" contrib="sponsor"
 751           sponsor="&citrix.rd;">Support for unmapped I/O has been
 752           added to the &man.xen.4; <literal>blkfront</literal>
 753           driver.</para>
 754
 755         <para revision="259328" contrib="sponsor" sponsor="&ff;">The
 756           &man.geom.8; <literal>label</literal> class is now aware of
 757           resized partitions.  This corrects an issue where
 758           <command>geom resize</command> would resize the partition,
 759           but the label provider in <filename
 760             class="directory">/dev/gptid/</filename> would not be
 761           resized.</para>
 762
 763         <para revision="260502">The &man.gmirror.8;
 764           utility now has a <literal>resize</literal> command, making
 765           it easier to resize the size of a mirror when all of its
 766           components have been replaced.</para>
 767
 768         <para revision="262967">Support for MegaRAID Fury cards has
 769           been added to the &man.mfi.4; driver.</para>
 770
 771         <para revision="263024">The &man.aacraid.4; driver has been
 772           updated to version 3.2.5.</para>
 773
 774         <para revision="265536">The <literal>GEOM_VINUM</literal>
 775           option is now able to be built both directly into the kernel
 776           or as a &man.kldload.8; loadable module.</para>
 777
 778         <para revision="265912">The &man.geom.8;
 779           <literal>GEOM_PART</literal> class has been updated to
 780           support automatic partition resizing.  Changes to the
 781           partition size are not saved to disk until
 782           <command>gpart commit</command> is run, and prior to saving,
 783           can be reverted with <command>gpart undo</command>.</para>
 784
 785         <para revision="266220">The &man.geom.uncompress.4; module is
 786           built by default which, similar to &man.geom.uzip.4;,
 787           provides support for compressed, read-only disk
 788           images.</para>
 789
 790         <para revision="268091">Support for the
 791           <literal>disklabel64</literal> partitioning scheme has been
 792           added to &man.gpart.8;.</para>
 793
 794         <para revision="270552">A new &man.sysctl.8; and
 795           &man.loader.8; tunable,
 796           <literal>kern.geom.part.mbr.enforce_chs</literal> has been
 797           added to the &man.geom.8; <literal>MBR</literal> partition
 798           class.  When set to a non-zero value,
 799           <literal>GEOM_PART_MBR</literal> will automatically
 800           recalculate the user-specified offset and size for alignment
 801           with the disk geometry.</para>
 802
 803         <para contrib="sponsor" sponsor="&ix;">Many improvements to
 804           the CAM Target Layer (CTL):</para>
 805         <itemizedlist>
 806           <listitem>
 807             <para>Support for <literal>UNMAP</literal>, <literal>WRITE
 808                 SAME</literal>, <literal>COMPARE AND WRITE</literal>,
 809               <literal>XCOPY</literal> and some other SCSI commands
 810               was added to support VMWare VAAI and Microsoft ODX
 811               storage acceleration.</para>
 812           </listitem>
 813           <listitem>
 814             <para revision="265642">The
 815               <literal>READ</literal>/<literal>WRITE</literal> size
 816               limitations were removed by supporting multiple
 817               data moves per command.</para>
 818           </listitem>
 819           <listitem>
 820             <para revision="268556">Finer-grained per-LUN locking and
 821               multiple worker threads for better
 822               <acronym>SMP</acronym> scapability.</para>
 823           </listitem>
 824           <listitem>
 825             <para revision="269297">Memory consumption reduced by
 826               several times by disabling some never used
 827               functionality.</para>
 828           </listitem>
 829           <listitem>
 830             <para revision="269298">The maximum number of
 831               <acronym>SCSI</acronym> ports increased from 32 to
 832               128</para>
 833           </listitem>
 834           <listitem>
 835             <para revision="269429">Improved <literal>zvol</literal>
 836               integration for better performance.</para>
 837           </listitem>
 838         </itemizedlist>
 839
 840         <para revision="270810" contrib="vendor"
 841           vendor="&highpoint;">The &man.hptnr.4; driver has been
 842           updated to version 1.0.1.</para>
 843
 844         <para revision="271234">The &man.mrsas.4; driver has been
 845           added to the <filename>GENERIC</filename> kernel
 846           configuration on &arch.amd64; and &arch.i386;
 847           architectures.</para>
 848       </sect3>
 849
 850       <sect3 xml:id="fs">
 851         <title>File Systems</title>
 852
 853         <para revision="260338">The
 854           <literal>vfs.zfs.zio.use_uma</literal> &man.sysctl.8; has
 855           been re-enabled.  On multi-CPU machines with enough RAM,
 856           this can easily double &man.zfs.8; performance or reduce CPU
 857           usage in half.  It was originally disabled due to memory and
 858           <acronym>KVA</acronym> exhaustion problem reports, which
 859           should be resolved due to several change in the VM
 860           subsystem.</para>
 861
 862         <para revision="260178" contrib="vendor"
 863           vendor="&netflix;">A new flag, <literal>-R</literal>,
 864           has been added to the &man.fsck.ffs.8; utility.  When used,
 865           &man.fsck.ffs.8; will restart itself when too many critical
 866           errors have been detected.</para>
 867
 868         <para revision="263407">The &man.zfs.8; filesystem has been
 869           updated to implement <quote>bookmarks</quote>.  See
 870           &man.zfs.8; for further details.</para>
 871
 872         <para revision="266122">The &man.zfs.8; filesystem has been
 873           updated to allow tuning the minimum <quote>ashift</quote>
 874           value when creating new top-level virtual devices (vdevs).
 875           To set the minimum ashift value, for example when creating
 876           a &man.zpool.8; on <quote>Advanced Format</quote> drives,
 877           set the <literal>vfs.zfs.min_auto_ashift</literal>
 878           &man.sysctl.8; accordingly.</para>
 879
 880         <para revision="266612">The <literal>libzfs</literal> thread
 881           pool <acronym>API</acronym> has been imported from
 882           OpenSolaris, and adapted for &os;.  This change allows
 883           parallel disk scanning, which can reduce &man.zpool.8;
 884           overall import time in some workloads.</para>
 885
 886         <para revision="269651">The &man.restore.8; utility has been
 887           updated to prevent assertion failures when restoring
 888           a <acronym>UFS</acronym> filesystem dump to
 889           a <acronym>ZFS</acronym> filesystem by writing restored
 890           files in block sizes that are a multiple of 1024.</para>
 891
 892         <para revision="269774">Two &man.sysctl.8;s have been added
 893           to the &man.zfs.8; filesystem:</para>
 894
 895         <itemizedlist>
 896           <listitem>
 897             <para>
 898               <literal>vfs.zfs.mg_fragmentation_threshold</literal>:&nbsp;The
 899               percentage of the metaslab group size that should be
 900               considered eligible for allocation, unless all metaslab
 901               groups within the metaslab class have also crossed this
 902               threshold.</para>
 903           </listitem>
 904
 905           <listitem>
 906             <para>
 907               <literal>vfs.zfs.metaslab.fragmentation_threshold</literal>:&nbsp;The
 908               maximum percentage of metaslab fragmentation level to
 909               keep their active state</para>
 910           </listitem>
 911         </itemizedlist>
 912
 913         <para revision="269846">The default &man.zfs.8;
 914           <acronym>ARC</acronym> hash table size has been increased,
 915           and a new &man.loader.8; tunable,
 916           <literal>vfs.zfs.arc_average_blocksize</literal>, has been
 917           added.  Previously, the hash table could be too small, which
 918           would lead to long hash chains and limit performance for
 919           cached reads.  The
 920           <literal>vfs.zfs.arc_average_blocksize</literal> tunable
 921           allows overriding the default block size.  The previous
 922           default was 65536, and default of the new &man.loader.8;
 923           tunable is 8192.</para>
 924
 925         <para revision="270157">The Fast File System
 926           (<acronym>FFS</acronym>) has been updated to support
 927           multi-threaded soft updates.  Previously, soft updates were
 928           handled by a single thread, and as of this change, now have
 929           one thread per <acronym>FFS</acronym> mountpoint.</para>
 930
 931         <para revision="270892" contrib="sponsor" sponsor="&ff;">The
 932           new filesystem automount facility, &man.autofs.5;, has been
 933           merged from &os;-CURRENT.  The new &man.autofs.5; facility
 934           is similar to that found in other &unix;-like operating
 935           systems, such as OS&nbsp;X&trade; and Solaris&trade;.  The
 936           &man.autofs.5; facility uses a &sun;-compatible
 937           &man.auto.master.5; configuration file, and is administered
 938           with the &man.automount.8; userland utility, and the
 939           &man.automountd.8; and &man.autounmountd.8; daemons.</para>
 940       </sect3>
 941     </sect2>
 942
 943     <sect2 xml:id="userland">
 944       <title>Userland Changes</title>
 945
 946       <para revision="260177" contrib="sponsor"
 947         sponsor="&netflix;">A new flag is added to &man.camcontrol.8;,
 948         <literal>-b</literal>, which outputs the existing buses and
 949         their parents.</para>
 950
 951       <para revision="262075">The &man.newsyslog.8; utility has been
 952         updated to rotate files based on the actual file size instead
 953         of the blocks on disk.  This matches the behavior documented
 954         in &man.newsyslog.conf.5;.</para>
 955
 956       <para revision="262384">The location of the &man.rctl.8;
 957         configuration file can now be overridden in &man.rc.conf.5;.
 958         To use a non-default location, set
 959         <literal>rctl_rules</literal> in &man.rc.conf.5; to the
 960         location of the file.</para>
 961
 962       <para revision="262855">The <application>ATF</application> test
 963         suite has been updated to version 0.20.  The test suite is
 964         disabled by default in &os;&nbsp;10.1, and can be enabled by
 965         adding <literal>WITH_TESTS=yes</literal> to
 966         &man.src.conf.5;.</para>
 967
 968       <para revision="263019">The <literal>libucl</literal> library
 969         (Unified Configuration Library) has been merged from
 970         &os;-CURRENT.</para>
 971
 972       <para revision="263020">The &man.pkg.7; bootstrapping utility
 973         has been synced with the version in &os;-CURRENT.</para>
 974
 975       <para revision="263403">The &man.zfs.8; userland utility has
 976         been updated to include aliases for
 977         <command>snapshot</command>, which allows use of <command>zfs
 978           list -t snap</command> and <command>zfs
 979           snap</command>.</para>
 980
 981       <para revision="263405">The &man.zfs.8; userland utility has
 982         been updated to include a new flag to <command>zfs
 983           list</command>, <literal>-p</literal>, which when specified,
 984         prints the output in a parsable format.</para>
 985
 986       <para revision="263783">The Blowfish password format
 987         implementation updated.  Support for &dollar;2b&dollar; has
 988         been added, allowing use of passwords greater than 256
 989         characters long.</para>
 990
 991       <para revision="264497">The &man.iconv.3; library has been
 992         updated to match NetBSD, providing several bug fixes.</para>
 993
 994       <para revision="265265">The &man.date.1; utility has been
 995         updated to include a new flag, <literal>-R</literal>, which
 996         prints the date and time output as specified in RFC
 997         2822.</para>
 998
 999       <para revision="265533">The &man.bc.1; utility has been updated
1000         to version 1.1, in sync with the version in OpenBSD.</para>
1001
1002       <para revision="265604" contrib="vendor"
1003         vendor="&netflix;">The &man.pmcstat.8; utility has been
1004         updated to include a new flag, <literal>-a</literal>, which
1005         when specified, produces a full stack track on the sampled
1006         points.</para>
1007
1008       <para revision="265701">The &man.netstat.8; and &man.route.8;
1009         utilities have been updated to include a shorthand equivalent
1010         to the <literal>-f inet</literal> and <literal>-f
1011           inet6</literal> address specifiers, <literal>-4</literal>
1012         and <literal>-6</literal>, respectively.</para>
1013
1014       <para revision="265879">The &man.crypt.3; library now defaults
1015         to SHA512 for password hashing.</para>
1016
1017       <para revision="266014">The &man.gvinum.8; utility has been
1018         updated to allow forceful configuration reset with the
1019         <literal>-f</literal> flag.  Additionally, a bug that would
1020         prevent <literal>-f</literal> from properly creating
1021         a &man.gvinum.8; configuration has been fixed.</para>
1022
1023       <para revision="266029">The &man.login.conf.5; file now takes
1024         precedence over the shell-specific environment files.  In
1025         particular, the <literal>PATH</literal>,
1026         <literal>BLOCKSIZE</literal> variables are commented from
1027         <filename>/usr/share/skel/dot.profile</filename>, and the
1028         <literal>path</literal>, <literal>BLOCKSIZE</literal>, and
1029         <literal>umask</literal> variables have been commented from
1030         <filename>/usr/share/skel/dot.cshrc</filename>.</para>
1031
1032       <para revision="266272">The &man.binmiscctl.8; userland utility
1033         and related image activator features have been merged from
1034         &os;-CURRENT.</para>
1035
1036       <para revision="266279">The &man.ps.1; utility has been
1037         updated to include the <literal>-J</literal> flag, used to
1038         filter output by matching &man.jail.8; IDs and names.
1039         Additionally, argument <literal>0</literal> can be used to
1040         <literal>-J</literal> to only list processes running on the
1041         host system.</para>
1042
1043       <para revision="266280">The &man.top.1; utility has been updated
1044         to filter by &man.jail.8; ID or name, in followup to the
1045         &man.ps.1; change in <literal>r265229</literal>.</para>
1046
1047       <para revision="266610">The &man.gstat.8; utility has been
1048         updated to include a new flag, <literal>-o</literal>.  When
1049         set, &man.gstat.8; will display statistics for operations
1050         such as <literal>BIO_FLUSH</literal>.</para>
1051
1052       <para revision="266632">The &man.fetch.3; library has been
1053         updated to look for root <acronym>SSL</acronym> certificates
1054         in <filename class="directory">/usr/local/etc/ssl/</filename>
1055         before <filename
1056           class="directory">/etc/ssl/</filename>.</para>
1057
1058       <para revision="266715">The &man.clang.1;/llvm suite has been
1059         updated to version 3.4.1.</para>
1060
1061       <para revision="266816">The Blowfish password format
1062         has been changed to &dollar;2b&dollar; by default.</para>
1063
1064       <para revision="266888">The amount of data collected for
1065         &man.hwpmc.4; has been updated to work with modern processors
1066         and larger amounts of available memory.</para>
1067
1068       <para revision="266890">The &man.pmcstat.8; utility has been
1069         updated to include a new flag, <literal>-l</literal>, which
1070         ends event collection after the specified number of
1071         seconds.</para>
1072
1073       <para revision="266953">The &man.mergemaster.8; utility has
1074         been updated to avoid printing
1075         <quote><filename>/var/tmp/temproot</filename>
1076           disappeared</quote> if there is nothing to compare.</para>
1077
1078       <para revision="267056">The &os; installer, &man.bsdinstall.8;,
1079         has been updated to include optional
1080         &man.geli.8;-encrypted or &man.gmirror.8;-mirrored swap
1081         devices when installing onto a full &man.zfs.8; filesystem.
1082         Additionally, the parent &man.zfs.8; dataset is now configured
1083         with <literal>lz4</literal> compression enabled.</para>
1084
1085       <para revision="267113">The default &man.newsyslog.conf.5; now
1086         includes files in the
1087         <filename>/etc/newsyslog.conf.d/</filename> and
1088         <filename>/usr/local/etc/newsyslog.conf.d/</filename>
1089         directories by default for &man.newsyslog.8;.</para>
1090
1091       <para revision="267161">The &man.realpath.1; utility has been
1092         updated to return <literal>ENOTDIR</literal> on paths
1093         components <quote>.</quote> and <quote>..</quote> that are
1094         not directories, such as <filename
1095           class="directory">/dev/null/.</filename> or <filename
1096           class="directory">/dev/null/..</filename>.</para>
1097
1098       <para revision="267236">A new flag, <quote>onifconsole</quote>
1099         has been added to <filename>/etc/ttys</filename>.  This allows
1100         the system to provide a login prompt via serial console if the
1101         device is an active kernel console, otherwise it is equivalent
1102         to <literal>off</literal>.</para>
1103
1104       <para revision="267341">Support for legacy
1105         <acronym>PCI</acronym> devices has been removed from
1106         &man.bhyve.8;.</para>
1107
1108       <para revision="267450">The &man.bhyve.8; userland utility
1109         has been updated to include SMBIOS support.  A new flag has
1110         been added, <literal>-U</literal>, which allows specifying the
1111         UUID of the guest in the System Information structure.</para>
1112
1113       <para revision="267734">The &os;&nbsp;Project has migrated
1114         from the <application>GNATS</application> bug tracking system
1115         to <application>Bugzilla</application>.  The &man.send-pr.1;
1116         utility used for submitting problem reports has been replaced
1117         with a stub shell script that instructs to use the Bugzilla
1118         web interface.</para>
1119
1120       <para revision="267747">The &man.patch.1; utility has been
1121         updated to include a <literal>--dry-run</literal> flag, which
1122         is equivalent to <literal>--check</literal> and
1123         <literal>-C</literal>.</para>
1124
1125       <para revision="267878">A bug in &man.bsdgrep.1; that would
1126         prevent patterns from being matched under certain conditions
1127         has been fixed.</para>
1128
1129       <para revision="267979">The &man.procstat.1; utility has been
1130         updated to include two new flags, <literal>-r</literal> and
1131         <literal>-H</literal>.  When <literal>-r</literal> is
1132         specified, &man.procstat.1; will print current resource usage
1133         about the process(es).  When <literal>-H</literal> is
1134         specified, &man.procstat.1; will print information about
1135         threads rather than the process(es).</para>
1136
1137       <note>
1138         <para>The <literal>-H</literal> flag is currently only used
1139           with <literal>-r</literal> to display resource usage for
1140           individual threads, rather than the entire process.</para>
1141       </note>
1142
1143       <para revision="268019">The &man.sed.1; utility has been
1144         updated to include a new flag, <literal>-u</literal>, which
1145         enables unbuffered output when specified.</para>
1146
1147       <para revision="268161">The &man.mkimg.1; utility has been
1148         merged from &os;-CURRENT.</para>
1149
1150       <para revision="268700" contrib="sponsor"
1151         sponsor="&spectralogic;">The &man.camcontrol.8; has been
1152         updated to include a new <literal>persist</literal> command,
1153         which allows issuing <command>SCSI PERSISTENT RESERVE
1154           IN</command> and <command>SCSI PERSISTENT RESERVE
1155           OUT</command>.</para>
1156
1157       <para revision="268791">The &man.gstat.8; utility has been
1158         updated to include a new flag, <literal>-p</literal>, which
1159         displays only physical providers when specified.</para>
1160
1161       <para revision="268903">The &man.kldstat.8; utility has been
1162         updated to allow <literal>-q</literal> to be specified when
1163         also specifying <literal>-n
1164           <replaceable>module.ko</replaceable></literal>.</para>
1165
1166       <para revision="269177">The &man.mkimg.1; utility has been
1167         updated to include support for both fixed- and
1168         dynamically-allocated images for the <acronym>VHD</acronym>
1169         and <acronym>VMDK</acronym> formats.</para>
1170
1171       <para revision="269220">The &man.random.4; entropy collection
1172         script, <filename>/usr/libexec/save-entropy</filename>, no
1173         longer runs within &man.jail.8; environments.</para>
1174
1175       <para revision="269397">The &man.bhyve.8; wrapper script,
1176         <filename>/usr/share/examples/bhyve/vmrun.sh</filename>,
1177         has been synced with &os;-CURRENT.</para>
1178
1179       <para>This update includes:</para>
1180
1181       <itemizedlist>
1182         <listitem>
1183           <para>A new flag, <literal>-e</literal>, has been added,
1184             which is used to set &man.loader.8; environment
1185             variables.</para>
1186         </listitem>
1187
1188         <listitem>
1189           <para>A new flag, <literal>-C</literal>, has been added,
1190             which is used to specify the guest console device.</para>
1191         </listitem>
1192
1193         <listitem>
1194           <para>A new flag, <literal>-H</literal>, has been added,
1195             which is used to pass the host path to
1196             &man.bhyveload.8;.</para>
1197         </listitem>
1198
1199         <listitem>
1200           <para>Support for multiple disk and &man.tap.4; devices
1201             has been added.</para>
1202         </listitem>
1203
1204         <listitem>
1205           <para>The <literal>-I</literal> flag has been
1206             removed.</para>
1207         </listitem>
1208       </itemizedlist>
1209
1210       <para revision="269398">The &man.nfsd.8; server update to 4.1,
1211         adding support for RFC5661, has merged from
1212         &os;-CURRENT.</para>
1213
1214       <para revision="269432" arch="ia64">The serial terminals
1215         <filename>ttyu0</filename> and <filename>ttyu1</filename> have
1216         been updated to <literal>onifconsole</literal> by default in
1217         &man.ttys.5;, which either can be the serial console,
1218         depending on the platform.</para>
1219
1220       <para revision="269800">The &man.ping6.8; utility has been
1221         updated to reset <literal>itimer</literal> when the maximum
1222         number of packets to send have been reached.  This prevents
1223         &man.ping6.8; from exiting when the interval in set to a small
1224         value and a low number of packets to send has been
1225         specified.</para>
1226
1227       <para revision="269805">The &man.jail.8; utility has been
1228         updated to support extra &man.ifconfig.8; arguments for the
1229         <literal>ip4.addr</literal> and <literal>ip6.addr</literal>
1230         parameters.  This change allows &man.carp.4; interfaces to
1231         be used within the &man.jail.8;.</para>
1232
1233       <para revision="269946">Support for generating and compiling
1234         <acronym>USDT</acronym> <application>DTrace</application>
1235         probes has been improved.  <application>DTrace</application>
1236         <acronym>USDT</acronym> files are now handled similar to
1237         &man.lex.1; and &man.yacc.1; files, meaning support for
1238         handling <application>D</application> files as part of the
1239         build process is built into the <literal>SRCS</literal>
1240         &man.make.1; environment variable.</para>
1241
1242       <para revision="269968">The &man.iscsictl.8; utility has been
1243         updated to include a new flag, <literal>-M</literal>, which
1244         allows modifying the <acronym>iSCSI</acronym> session
1245         parameters without requiring the session to be removed and
1246         added back.</para>
1247
1248       <para revision="270043">The &man.mount.nfs.8; utility has been
1249         updated to support specifying the NFS version as
1250         a <literal>key=<replaceable>value</replaceable></literal> pair
1251         argument to the <literal>-o</literal> flag.  For example, to
1252         specify NFS version 4, the syntax to use is
1253         <literal>-o&nbsp;vers=4</literal>.</para>
1254
1255       <para revision="270242" contrib="sponsor"
1256         sponsor="&spectralogic;">The &man.devd.8; client socket type
1257         has been changed to <literal>SOCK_SEQPACKET</literal>,
1258         providing sequential packet support.</para>
1259
1260       <para revision="270401">Support for the <quote>account</quote>
1261         facility has been added to the &man.pam.group.8;
1262         module.</para>
1263
1264       <para revision="270890">The &man.pathchk.1; utility has been
1265         updated to ensure bytes greater than or equal to 128 are
1266         considered non-portable.</para>
1267
1268       <para revision="270997" contrib="vendor" vendor="&freenas;">The
1269         &man.zdb.8; utility is now included in the set of applications
1270         installed in the <filename
1271           class="directory">/rescue</filename> environment, making it
1272         possible to examine &man.zfs.8; filesystems when <filename
1273           class="directory">/usr</filename> is unavailable.</para>
1274
1275       <para>Several <literal>libc</literal> improvements have been
1276         merged from illumos&trade; and &apple;, providing better
1277         internationalization support and &posix; compliance.</para>
1278
1279       <sect3 xml:id="rc-scripts">
1280         <title><filename>/etc/rc.d</filename> Scripts</title>
1281
1282         <para revision="264438">The <filename>network.subr</filename>
1283           &man.rc.8; script has been updated to loosen the requirement
1284           of listing network aliases in numeric order.  Previously,
1285           a network alias of
1286           <literal>_alias<replaceable>2</replaceable></literal>
1287           would not be created if
1288           <literal>_alias<replaceable>1</replaceable></literal> was
1289           not defined.</para>
1290
1291         <para revision="268098">The &man.service.8; utility has been
1292           updated to check that the &man.rc.d.8; directory exists
1293           before traversing the directory.</para>
1294
1295         <para revision="259141">A regression introduced in
1296           &os;&nbsp;10.0-RELEASE that would prevent proper IPv6
1297           allocation via the &man.jail.8; &man.rc.8; startup script
1298           has been fixed.</para>
1299
1300         <para revision="264438">The &man.rc.8; restriction requiring
1301           &man.mdconfig.8; devices defined in &man.rc.conf.5; to be
1302           listed sequentially has been removed.</para>
1303
1304         <para revision="262566">The &man.sshd.8; &man.rc.d.8; startup
1305           script now generates <literal>ED25519</literal> &man.sshd.8;
1306           host keys if keys do not already exist when
1307           <literal>ssh_keygen_alg()</literal> is invoked.</para>
1308
1309         <para revision="271095">Support for &man.vt.4; keyboard maps
1310           has been added to the <filename>syscons</filename>
1311           &man.rc.d.8; startup script.</para>
1312
1313         <para revision="271260">Support for subdirectories within
1314           <filename
1315             class="directory">/etc/rc.conf.d/<replaceable>service</replaceable>/</filename>
1316           has been added the &man.rc.d.8;.  This allows creating
1317           separate configuration files for services such as
1318           <filename>netif</filename>, for example, where each network
1319           interface can have a separate configuration file.</para>
1320       </sect3>
1321     </sect2>
1322
1323     <sect2 xml:id="contrib">
1324       <title>Contributed Software</title>
1325
1326       <para revision="263285">The &man.xz.1; utility has been updated
1327         to a post-5.0.5 snapshot.</para>
1328
1329       <para revision="264377"><application>OpenSSH</application> has
1330         been updated to version 6.6p1.</para>
1331
1332       <para revision="264911">The &man.nc.1; utility has been updated
1333         to match the version in OpenBSD 5.5.</para>
1334
1335       <para revision="266692"><application>Sendmail</application>
1336         has been updated to 8.14.9.</para>
1337
1338       <para revision="268515">The &man.file.1; utility and
1339         &man.libmagic.3; library have been updated to 5.19.</para>
1340
1341       <para revision="268899">The &man.byacc.1; parser has been
1342         updated to version 20140422.</para>
1343
1344       <para revision="269024" contrib="sponsor"
1345         sponsor="&darpa_afrl;">The &man.lldb.1; debugging library has
1346         been updated to the r202189 snapshot.</para>
1347
1348       <para revision="269257">The &man.unbound.8; caching resolver and
1349         <literal>ldns</literal> have been updated to version
1350         1.4.22.</para>
1351
1352       <para revision="269686"><application>OpenSSL</application> has
1353         been updated to version 1.0.1i.</para>
1354
1355       <para revision="269847">The <quote>lite</quote> version of
1356         <application>Subversion</application> included in the
1357         &os;&nbsp;base system and its dependencies have been
1358         updated:</para>
1359
1360       <itemizedlist>
1361         <listitem>
1362           <para><application>apr</application> has been
1363             updated to version 1.5.1.</para>
1364         </listitem>
1365
1366         <listitem>
1367           <para><application>apr-util</application> has been
1368             updated to version 1.5.3.</para>
1369         </listitem>
1370
1371         <listitem>
1372           <para><application>serf</application> has been
1373             updated to version 1.3.7.</para>
1374         </listitem>
1375
1376         <listitem>
1377           <para><application>svnlite</application> has been
1378             updated to version 1.8.10.</para>
1379         </listitem>
1380       </itemizedlist>
1381
1382       <para revision="270026">The &man.nvi.1; editor has been
1383         update to version 2.1.2-c80f493b038.</para>
1384
1385       <para revision="270031">The &man.fparseln.3; library has
1386         been updated to version 1.7.</para>
1387
1388       <para revision="270415">The <application>lukemftpd</application>
1389         <acronym>FTP</acronym> server has been removed from the
1390         &os;&nbsp;base system.</para>
1391
1392       <para revision="270817">The timezone database has been updated
1393         to version tzdata2014f.</para>
1394     </sect2>
1395
1396     <sect2 xml:id="ports">
1397       <title>Ports/Packages Collection Infrastructure</title>
1398
1399       <para>&nbsp;</para>
1400
1401     </sect2>
1402
1403     <sect2 xml:id="releng">
1404       <title>Release Engineering and Integration</title>
1405
1406       <para revision="263028">The &man.services.mkdb.8; utility has
1407         been updated to include endianness awareness, allowing the
1408         <filename>services.db</filename> database to be created as
1409         part of the release build, regardless of native- or
1410         cross-built releases.</para>
1411     </sect2>
1412
1413     <sect2 xml:id="doc">
1414       <title>Documentation</title>
1415
1416       <para>&nbsp;</para>
1417
1418     </sect2>
1419   </sect1>
1420
1421   <sect1 xml:id="upgrade">
1422     <title>Upgrading from Previous Releases of &os;</title>
1423
1424     <para arch="amd64,i386">Binary upgrades between RELEASE versions
1425       (and snapshots of the various security branches) are supported
1426       using the &man.freebsd-update.8; utility.  The binary upgrade
1427       procedure will update unmodified userland utilities, as well as
1428       unmodified <filename>GENERIC</filename> kernel distributed as
1429       a part of an official &os; release.  The &man.freebsd-update.8;
1430       utility requires that the host being upgraded have Internet
1431       connectivity.</para>
1432
1433     <para>Source-based upgrades (those based on recompiling the &os;
1434       base system from source code) from previous versions are
1435       supported, according to the instructions in
1436       <filename>/usr/src/UPDATING</filename>.</para>
1437
1438     <important>
1439       <para>Upgrading &os; should only be attempted after
1440         backing up <emphasis>all</emphasis> data and configuration
1441         files.</para>
1442     </important>
1443   </sect1>
1444 </article>