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> scalability.</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
 663         <para revision="263725" contrib="sponsor"
 664           sponsor="&ff;">The &man.ctld.8; daemon has been updated
 665           to allow overriding the <quote>default</quote>
 666           <literal>portal-group</literal> configuration.</para>
 667
 668         <para revision="263726" contrib="sponsor"
 669           sponsor="&ff;">The &man.ctld.8; daemon now includes a new
 670           <literal>auth-group</literal>, <quote>default</quote>,
 671           defaulting to <literal>deny</literal>, which is possible
 672           to override.</para>
 673       </sect3>
 674
 675       <sect3 xml:id="disks">
 676         <title>Disks and Storage</title>
 677
 678         <para revision="260385" contrib="sponsor" sponsor="&ix;">The
 679           &man.geom.4; subsystem has been updated to support I/O
 680           direct dispatch.  When safety requirements are met, it
 681           enables avoiding passing I/O requests to GEOM
 682           <literal>g_up</literal>/<literal>g_down</literal> thread,
 683           executing them directly in the caller context, avoiding
 684           CPU bottlenecks in
 685           <literal>g_up</literal>/<literal>g_down</literal> threads,
 686           plus avoid several context switches per I/O.</para>
 687
 688         <para revision="260385" contrib="sponsor" sponsor="&ix;">The
 689           &man.geom.4; RAID driver has been
 690           updated to support unmapped I/O.</para>
 691
 692         <para revision="260387" contrib="sponsor" sponsor="&ix;">The
 693           &man.cam.4; subsystem has been updated to support
 694           finer-grained locking, direct dispatch and multi-queue,
 695           which combined with &man.geom.4; direct dispatch, reduces
 696           lock congestion and improves <acronym>SMP</acronym>
 697           scalability of the SCSI/ATA stack.</para>
 698
 699         <para revision="260478">The &man.geom.8;
 700           <literal>GEOM_MULTIPATH</literal> class has been updated to
 701           support automatic live partition resizing.</para>
 702
 703         <para revision="260857">The &man.virtio_blk.4; driver has been
 704           updated to support unmapped I/O.</para>
 705
 706         <para revision="260858">The &man.virtio_scsi.4; driver has
 707           been updated to support unmapped I/O.</para>
 708
 709         <para revision="264522">Support for LUN-based CD changers has
 710           been removed from the &man.cd.4; driver.</para>
 711
 712         <para revision="264732">Support for
 713           <literal>BIO_DELETE</literal> has been added to &man.zfs.8;
 714           <literal>zvol</literal> volumes.</para>
 715
 716         <para revision="264734">Support for 9th generation HP host bus
 717           adapter cards has been added to &man.ciss.4;.</para>
 718
 719         <para revision="265388" contrib="sponsor" sponsor="&lsi;">The
 720           &man.mpr.4; device has been added,
 721           providing support for LSI Fusion-MPT 3 12Gb SCSI/SATA
 722           controllers.</para>
 723
 724         <para revision="265678">A new <literal>zvol</literal> property
 725           <literal>volmode</literal> and  &man.sysctl.8;
 726           <literal>vfs.zfs.vol.mode</literal> has been added to allow
 727           switching <literal>zvol</literal> between three different
 728           ways of exposing it to a user: <literal>geom</literal>,
 729           <literal>dev</literal> and <literal>none</literal>.</para>
 730
 731         <para revision="265922" contrib="sponsor" sponsor="&lsi;">The
 732           &man.mrsas.4; driver has been added, providing support for
 733           LSI MegaRAID SAS controllers.  The &man.mfi.4; driver will
 734           attach to the controller, by default.  To enable
 735           &man.mrsas.4; add <literal>hw.mfi.mrsas_enable=1</literal>
 736           to <filename>/boot/loader.conf</filename>, which turns off
 737           &man.mfi.4; device probing.</para>
 738
 739         <note>
 740           <para>At this time, the &man.mfiutil.8; utility and the &os;
 741             version of <application>MegaCLI</application> and
 742             <application>StorCli</application> do not work with
 743             &man.mrsas.4;.</para>
 744         </note>
 745
 746         <para revision="266608">Fixed accounting of
 747           <literal>BIO_FLUSH</literal> operation in &man.geom.8;
 748           <literal>GEOM_DISK</literal> class</para>
 749
 750         <para revision="266610">The &man.gstat.8; utility now has an
 751           <literal>-o</literal> option, to display
 752           <quote>other</quote> operations, such as
 753           <literal>BIO_FLUSH</literal>.</para>
 754
 755         <para revision="267084">The &man.mfi.4; driver has been
 756           updated to include support for unmapped I/O.</para>
 757
 758         <para revision="267457">The &man.hpt27xx.4; driver has been
 759           updated with various vendor-supplied bug fixes.</para>
 760
 761         <para revision="270130" contrib="sponsor"
 762           sponsor="&citrix.rd;">Support for unmapped I/O has been
 763           added to the &man.xen.4; <literal>blkfront</literal>
 764           driver.</para>
 765
 766         <para revision="259328" contrib="sponsor" sponsor="&ff;">The
 767           &man.geom.8; <literal>label</literal> class is now aware of
 768           resized partitions.  This corrects an issue where
 769           <command>geom resize</command> would resize the partition,
 770           but the label provider in <filename
 771             class="directory">/dev/gptid/</filename> would not be
 772           resized.</para>
 773
 774         <para revision="260502">The &man.gmirror.8;
 775           utility now has a <literal>resize</literal> command, making
 776           it easier to resize the size of a mirror when all of its
 777           components have been replaced.</para>
 778
 779         <para revision="262967">Support for MegaRAID Fury cards has
 780           been added to the &man.mfi.4; driver.</para>
 781
 782         <para revision="263024">The &man.aacraid.4; driver has been
 783           updated to version 3.2.5.</para>
 784
 785         <para revision="265536">The <literal>GEOM_VINUM</literal>
 786           option is now able to be built both directly into the kernel
 787           or as a &man.kldload.8; loadable module.</para>
 788
 789         <para revision="265912">The &man.geom.8;
 790           <literal>GEOM_PART</literal> class has been updated to
 791           support automatic partition resizing.  Changes to the
 792           partition size are not saved to disk until
 793           <command>gpart commit</command> is run, and prior to saving,
 794           can be reverted with <command>gpart undo</command>.</para>
 795
 796         <para revision="266220">The &man.geom.uncompress.4; module is
 797           built by default which, similar to &man.geom.uzip.4;,
 798           provides support for compressed, read-only disk
 799           images.</para>
 800
 801         <para revision="268091">Support for the
 802           <literal>disklabel64</literal> partitioning scheme has been
 803           added to &man.gpart.8;.</para>
 804
 805         <para revision="270552">A new &man.sysctl.8; and
 806           &man.loader.8; tunable,
 807           <literal>kern.geom.part.mbr.enforce_chs</literal> has been
 808           added to the &man.geom.8; <literal>MBR</literal> partition
 809           class.  When set to a non-zero value,
 810           <literal>GEOM_PART_MBR</literal> will automatically
 811           recalculate the user-specified offset and size for alignment
 812           with the disk geometry.</para>
 813
 814         <para contrib="sponsor" sponsor="&ix;">Many improvements to
 815           the CAM Target Layer (CTL):</para>
 816         <itemizedlist>
 817           <listitem>
 818             <para>Support for <literal>UNMAP</literal>, <literal>WRITE
 819                 SAME</literal>, <literal>COMPARE AND WRITE</literal>,
 820               <literal>XCOPY</literal> and some other SCSI commands
 821               was added to support VMWare VAAI and Microsoft ODX
 822               storage acceleration.</para>
 823           </listitem>
 824           <listitem>
 825             <para revision="265642">The
 826               <literal>READ</literal>/<literal>WRITE</literal> size
 827               limitations were removed by supporting multiple
 828               data moves per command.</para>
 829           </listitem>
 830           <listitem>
 831             <para revision="268556">Finer-grained per-LUN locking and
 832               multiple worker threads for better
 833               <acronym>SMP</acronym> scapability.</para>
 834           </listitem>
 835           <listitem>
 836             <para revision="269297">Memory consumption reduced by
 837               several times by disabling some never used
 838               functionality.</para>
 839           </listitem>
 840           <listitem>
 841             <para revision="269298">The maximum number of
 842               <acronym>SCSI</acronym> ports increased from 32 to
 843               128.</para>
 844           </listitem>
 845           <listitem>
 846             <para revision="269429">Improved <literal>zvol</literal>
 847               integration for better performance.</para>
 848           </listitem>
 849         </itemizedlist>
 850
 851         <para revision="270810" contrib="vendor"
 852           vendor="&highpoint;">The &man.hptnr.4; driver has been
 853           updated to version 1.0.1.</para>
 854
 855         <para revision="271234">The &man.mrsas.4; driver has been
 856           added to the <filename>GENERIC</filename> kernel
 857           configuration on &arch.amd64; and &arch.i386;
 858           architectures.</para>
 859       </sect3>
 860
 861       <sect3 xml:id="fs">
 862         <title>File Systems</title>
 863
 864         <para revision="260338">The
 865           <literal>vfs.zfs.zio.use_uma</literal> &man.sysctl.8; has
 866           been re-enabled.  On multi-CPU machines with enough RAM,
 867           this can easily double &man.zfs.8; performance or reduce CPU
 868           usage in half.  It was originally disabled due to memory and
 869           <acronym>KVA</acronym> exhaustion problem reports, which
 870           should be resolved due to several changes in the VM
 871           subsystem.</para>
 872
 873         <para revision="260178" contrib="vendor"
 874           vendor="&netflix;">A new flag, <literal>-R</literal>,
 875           has been added to the &man.fsck.ffs.8; utility.  When used,
 876           &man.fsck.ffs.8; will restart itself when too many critical
 877           errors have been detected.</para>
 878
 879         <para revision="263407">The &man.zfs.8; filesystem has been
 880           updated to implement <quote>bookmarks</quote>.  See
 881           &man.zfs.8; for further details.</para>
 882
 883         <para revision="266122">The &man.zfs.8; filesystem has been
 884           updated to allow tuning the minimum <quote>ashift</quote>
 885           value when creating new top-level virtual devices (vdevs).
 886           To set the minimum ashift value, for example when creating
 887           a &man.zpool.8; on <quote>Advanced Format</quote> drives,
 888           set the <literal>vfs.zfs.min_auto_ashift</literal>
 889           &man.sysctl.8; accordingly.</para>
 890
 891         <para revision="266612">The <literal>libzfs</literal> thread
 892           pool <acronym>API</acronym> has been imported from
 893           OpenSolaris, and adapted for &os;.  This change allows
 894           parallel disk scanning, which can reduce &man.zpool.8;
 895           overall import time in some workloads.</para>
 896
 897         <para revision="269651">The &man.restore.8; utility has been
 898           updated to prevent assertion failures when restoring
 899           a <acronym>UFS</acronym> filesystem dump to
 900           a <acronym>ZFS</acronym> filesystem by writing restored
 901           files in block sizes that are a multiple of 1024.</para>
 902
 903         <para revision="269774">Two &man.sysctl.8;s have been added
 904           to the &man.zfs.8; filesystem:</para>
 905
 906         <itemizedlist>
 907           <listitem>
 908             <para>
 909               <literal>vfs.zfs.mg_fragmentation_threshold</literal>:&nbsp;The
 910               percentage of the metaslab group size that should be
 911               considered eligible for allocation, unless all metaslab
 912               groups within the metaslab class have also crossed this
 913               threshold.</para>
 914           </listitem>
 915
 916           <listitem>
 917             <para>
 918               <literal>vfs.zfs.metaslab.fragmentation_threshold</literal>:&nbsp;The
 919               maximum percentage of metaslab fragmentation level to
 920               keep their active state</para>
 921           </listitem>
 922         </itemizedlist>
 923
 924         <para revision="269846">The default &man.zfs.8;
 925           <acronym>ARC</acronym> hash table size has been increased,
 926           and a new &man.loader.8; tunable,
 927           <literal>vfs.zfs.arc_average_blocksize</literal>, has been
 928           added.  Previously, the hash table could be too small, which
 929           would lead to long hash chains and limit performance for
 930           cached reads.  The
 931           <literal>vfs.zfs.arc_average_blocksize</literal> tunable
 932           allows overriding the default block size.  The previous
 933           default was 65536, and default of the new &man.loader.8;
 934           tunable is 8192.</para>
 935
 936         <para revision="270157">The Fast File System
 937           (<acronym>FFS</acronym>) has been updated to support
 938           multi-threaded soft updates.  Previously, soft updates were
 939           handled by a single thread, and as of this change, now have
 940           one thread per <acronym>FFS</acronym> mountpoint.</para>
 941
 942         <para revision="270892" contrib="sponsor" sponsor="&ff;">The
 943           new filesystem automount facility, &man.autofs.5;, has been
 944           merged from &os;-CURRENT.  The new &man.autofs.5; facility
 945           is similar to that found in other &unix;-like operating
 946           systems, such as OS&nbsp;X&trade; and Solaris&trade;.  The
 947           &man.autofs.5; facility uses a &sun;-compatible
 948           &man.auto.master.5; configuration file, and is administered
 949           with the &man.automount.8; userland utility, and the
 950           &man.automountd.8; and &man.autounmountd.8; daemons.</para>
 951       </sect3>
 952     </sect2>
 953
 954     <sect2 xml:id="userland">
 955       <title>Userland Changes</title>
 956
 957       <para revision="260177" contrib="sponsor"
 958         sponsor="&netflix;">A new flag is added to &man.camcontrol.8;,
 959         <literal>-b</literal>, which outputs the existing buses and
 960         their parents.</para>
 961
 962       <para revision="262075">The &man.newsyslog.8; utility has been
 963         updated to rotate files based on the actual file size instead
 964         of the blocks on disk.  This matches the behavior documented
 965         in &man.newsyslog.conf.5;.</para>
 966
 967       <para revision="262384">The location of the &man.rctl.8;
 968         configuration file can now be overridden in &man.rc.conf.5;.
 969         To use a non-default location, set
 970         <literal>rctl_rules</literal> in &man.rc.conf.5; to the
 971         location of the file.</para>
 972
 973       <para revision="262855">The <application>ATF</application> test
 974         suite has been updated to version 0.20.  The test suite is
 975         disabled by default in &os;&nbsp;10.1, and can be enabled by
 976         adding <literal>WITH_TESTS=yes</literal> to
 977         &man.src.conf.5;.</para>
 978
 979       <para revision="263019">The <literal>libucl</literal> library
 980         (Unified Configuration Library) has been merged from
 981         &os;-CURRENT.</para>
 982
 983       <para revision="263020">The &man.pkg.7; bootstrapping utility
 984         has been synced with the version in &os;-CURRENT.</para>
 985
 986       <para revision="263403">The &man.zfs.8; userland utility has
 987         been updated to include aliases for
 988         <command>snapshot</command>, which allows use of <command>zfs
 989           list -t snap</command> and <command>zfs
 990           snap</command>.</para>
 991
 992       <para revision="263405">The &man.zfs.8; userland utility has
 993         been updated to include a new flag to <command>zfs
 994           list</command>, <literal>-p</literal>, which when specified,
 995         prints the output in a parsable format.</para>
 996
 997       <para revision="263783">The Blowfish password format
 998         implementation has been updated.  Support for &dollar;2b&dollar; has
 999         been added, allowing use of passwords greater than 256
1000         characters long.</para>
1001
1002       <para revision="264497">The &man.iconv.3; library has been
1003         updated to match NetBSD, providing several bug fixes.</para>
1004
1005       <para revision="265265">The &man.date.1; utility has been
1006         updated to include a new flag, <literal>-R</literal>, which
1007         prints the date and time output as specified in RFC
1008         2822.</para>
1009
1010       <para revision="265533">The &man.bc.1; utility has been updated
1011         to version 1.1, in sync with the version in OpenBSD.</para>
1012
1013       <para revision="265604" contrib="vendor"
1014         vendor="&netflix;">The &man.pmcstat.8; utility has been
1015         updated to include a new flag, <literal>-a</literal>, which
1016         when specified, produces a full stack track on the sampled
1017         points.</para>
1018
1019       <para revision="265701">The &man.netstat.8; and &man.route.8;
1020         utilities have been updated to include a shorthand equivalent
1021         to the <literal>-f inet</literal> and <literal>-f
1022           inet6</literal> address specifiers, <literal>-4</literal>
1023         and <literal>-6</literal>, respectively.</para>
1024
1025       <para revision="265879">The &man.crypt.3; library now defaults
1026         to SHA512 for password hashing.</para>
1027
1028       <para revision="266014">The &man.gvinum.8; utility has been
1029         updated to allow forceful configuration reset with the
1030         <literal>-f</literal> flag.  Additionally, a bug that would
1031         prevent <literal>-f</literal> from properly creating
1032         a &man.gvinum.8; configuration has been fixed.</para>
1033
1034       <para revision="266029">The &man.login.conf.5; file now takes
1035         precedence over the shell-specific environment files.  In
1036         particular, the <literal>PATH</literal>,
1037         <literal>BLOCKSIZE</literal> variables are commented from
1038         <filename>/usr/share/skel/dot.profile</filename>, and the
1039         <literal>path</literal>, <literal>BLOCKSIZE</literal>, and
1040         <literal>umask</literal> variables have been commented from
1041         <filename>/usr/share/skel/dot.cshrc</filename>.</para>
1042
1043       <para revision="266272">The &man.binmiscctl.8; userland utility
1044         and related image activator features have been merged from
1045         &os;-CURRENT.</para>
1046
1047       <para revision="266279">The &man.ps.1; utility has been
1048         updated to include the <literal>-J</literal> flag, used to
1049         filter output by matching &man.jail.8; IDs and names.
1050         Additionally, argument <literal>0</literal> can be used to
1051         <literal>-J</literal> to only list processes running on the
1052         host system.</para>
1053
1054       <para revision="266280">The &man.top.1; utility has been updated
1055         to filter by &man.jail.8; ID or name, in followup to the
1056         &man.ps.1; change in <literal>r265229</literal>.</para>
1057
1058       <para revision="266610">The &man.gstat.8; utility has been
1059         updated to include a new flag, <literal>-o</literal>.  When
1060         set, &man.gstat.8; will display statistics for operations
1061         such as <literal>BIO_FLUSH</literal>.</para>
1062
1063       <para revision="266632">The &man.fetch.3; library has been
1064         updated to look for root <acronym>SSL</acronym> certificates
1065         in <filename class="directory">/usr/local/etc/ssl/</filename>
1066         before <filename
1067           class="directory">/etc/ssl/</filename>.</para>
1068
1069       <para revision="266715">The &man.clang.1;/llvm suite has been
1070         updated to version 3.4.1.</para>
1071
1072       <para revision="266816">The Blowfish password format
1073         has been changed to &dollar;2b&dollar; by default.</para>
1074
1075       <para revision="266888">The amount of data collected for
1076         &man.hwpmc.4; has been updated to work with modern processors
1077         and larger amounts of available memory.</para>
1078
1079       <para revision="266890">The &man.pmcstat.8; utility has been
1080         updated to include a new flag, <literal>-l</literal>, which
1081         ends event collection after the specified number of
1082         seconds.</para>
1083
1084       <para revision="266953">The &man.mergemaster.8; utility has
1085         been updated to avoid printing
1086         <quote><filename>/var/tmp/temproot</filename>
1087           disappeared</quote> if there is nothing to compare.</para>
1088
1089       <para revision="267056">The &os; installer, &man.bsdinstall.8;,
1090         has been updated to include optional
1091         &man.geli.8;-encrypted or &man.gmirror.8;-mirrored swap
1092         devices when installing onto a full &man.zfs.8; filesystem.
1093         Additionally, the parent &man.zfs.8; dataset is now configured
1094         with <literal>lz4</literal> compression enabled.</para>
1095
1096       <para revision="267113">The default &man.newsyslog.conf.5; now
1097         includes files in the
1098         <filename>/etc/newsyslog.conf.d/</filename> and
1099         <filename>/usr/local/etc/newsyslog.conf.d/</filename>
1100         directories by default for &man.newsyslog.8;.</para>
1101
1102       <para revision="267161">The &man.realpath.1; utility has been
1103         updated to return <literal>ENOTDIR</literal> on paths
1104         components <quote>.</quote> and <quote>..</quote> that are
1105         not directories, such as <filename
1106           class="directory">/dev/null/.</filename> or <filename
1107           class="directory">/dev/null/..</filename>.</para>
1108
1109       <para revision="267236">A new flag, <quote>onifconsole</quote>
1110         has been added to <filename>/etc/ttys</filename>.  This allows
1111         the system to provide a login prompt via serial console if the
1112         device is an active kernel console, otherwise it is equivalent
1113         to <literal>off</literal>.</para>
1114
1115       <para revision="267341">Support for legacy
1116         <acronym>PCI</acronym> devices has been removed from
1117         &man.bhyve.8;.</para>
1118
1119       <para revision="267450">The &man.bhyve.8; userland utility
1120         has been updated to include SMBIOS support.  A new flag has
1121         been added, <literal>-U</literal>, which allows specifying the
1122         UUID of the guest in the System Information structure.</para>
1123
1124       <para revision="267734">The &os;&nbsp;Project has migrated
1125         from the <application>GNATS</application> bug tracking system
1126         to <application>Bugzilla</application>.  The &man.send-pr.1;
1127         utility used for submitting problem reports has been replaced
1128         with a stub shell script that instructs to use the Bugzilla
1129         web interface.</para>
1130
1131       <para revision="267747">The &man.patch.1; utility has been
1132         updated to include a <literal>--dry-run</literal> flag, which
1133         is equivalent to <literal>--check</literal> and
1134         <literal>-C</literal>.</para>
1135
1136       <para revision="267878">A bug in &man.bsdgrep.1; that would
1137         prevent patterns from being matched under certain conditions
1138         has been fixed.</para>
1139
1140       <para revision="267979">The &man.procstat.1; utility has been
1141         updated to include two new flags, <literal>-r</literal> and
1142         <literal>-H</literal>.  When <literal>-r</literal> is
1143         specified, &man.procstat.1; will print current resource usage
1144         about the process(es).  When <literal>-H</literal> is
1145         specified, &man.procstat.1; will print information about
1146         threads rather than the process(es).</para>
1147
1148       <note>
1149         <para>The <literal>-H</literal> flag is currently only used
1150           with <literal>-r</literal> to display resource usage for
1151           individual threads, rather than the entire process.</para>
1152       </note>
1153
1154       <para revision="268019">The &man.sed.1; utility has been
1155         updated to include a new flag, <literal>-u</literal>, which
1156         enables unbuffered output when specified.</para>
1157
1158       <para revision="268161">The &man.mkimg.1; utility has been
1159         merged from &os;-CURRENT.</para>
1160
1161       <para revision="268700" contrib="sponsor"
1162         sponsor="&spectralogic;">The &man.camcontrol.8; has been
1163         updated to include a new <literal>persist</literal> command,
1164         which allows issuing <command>SCSI PERSISTENT RESERVE
1165           IN</command> and <command>SCSI PERSISTENT RESERVE
1166           OUT</command>.</para>
1167
1168       <para revision="268791">The &man.gstat.8; utility has been
1169         updated to include a new flag, <literal>-p</literal>, which
1170         displays only physical providers when specified.</para>
1171
1172       <para revision="268903">The &man.kldstat.8; utility has been
1173         updated to allow <literal>-q</literal> to be specified when
1174         also specifying <literal>-n
1175           <replaceable>module.ko</replaceable></literal>.</para>
1176
1177       <para revision="269177">The &man.mkimg.1; utility has been
1178         updated to include support for both fixed- and
1179         dynamically-allocated images for the <acronym>VHD</acronym>
1180         and <acronym>VMDK</acronym> formats.</para>
1181
1182       <para revision="269220">The &man.random.4; entropy collection
1183         script, <filename>/usr/libexec/save-entropy</filename>, no
1184         longer runs within &man.jail.8; environments.</para>
1185
1186       <para revision="269397">The &man.bhyve.8; wrapper script,
1187         <filename>/usr/share/examples/bhyve/vmrun.sh</filename>,
1188         has been synced with &os;-CURRENT.</para>
1189
1190       <para>This update includes:</para>
1191
1192       <itemizedlist>
1193         <listitem>
1194           <para>A new flag, <literal>-e</literal>, has been added,
1195             which is used to set &man.loader.8; environment
1196             variables.</para>
1197         </listitem>
1198
1199         <listitem>
1200           <para>A new flag, <literal>-C</literal>, has been added,
1201             which is used to specify the guest console device.</para>
1202         </listitem>
1203
1204         <listitem>
1205           <para>A new flag, <literal>-H</literal>, has been added,
1206             which is used to pass the host path to
1207             &man.bhyveload.8;.</para>
1208         </listitem>
1209
1210         <listitem>
1211           <para>Support for multiple disk and &man.tap.4; devices
1212             has been added.</para>
1213         </listitem>
1214
1215         <listitem>
1216           <para>The <literal>-I</literal> flag has been
1217             removed.</para>
1218         </listitem>
1219       </itemizedlist>
1220
1221       <para revision="269398">The &man.nfsd.8; server update to 4.1,
1222         adding support for RFC5661, has merged from
1223         &os;-CURRENT.</para>
1224
1225       <para revision="269432" arch="ia64">The serial terminals
1226         <filename>ttyu0</filename> and <filename>ttyu1</filename> have
1227         been updated to <literal>onifconsole</literal> by default in
1228         &man.ttys.5;, which either can be the serial console,
1229         depending on the platform.</para>
1230
1231       <para revision="269800">The &man.ping6.8; utility has been
1232         updated to reset <literal>itimer</literal> when the maximum
1233         number of packets to send have been reached.  This prevents
1234         &man.ping6.8; from exiting when the interval in set to a small
1235         value and a low number of packets to send has been
1236         specified.</para>
1237
1238       <para revision="269805">The &man.jail.8; utility has been
1239         updated to support extra &man.ifconfig.8; arguments for the
1240         <literal>ip4.addr</literal> and <literal>ip6.addr</literal>
1241         parameters.  This change allows &man.carp.4; interfaces to
1242         be used within the &man.jail.8;.</para>
1243
1244       <para revision="269946">Support for generating and compiling
1245         <acronym>USDT</acronym> <application>DTrace</application>
1246         probes has been improved.  <application>DTrace</application>
1247         <acronym>USDT</acronym> files are now handled similar to
1248         &man.lex.1; and &man.yacc.1; files, meaning support for
1249         handling <application>D</application> files as part of the
1250         build process is built into the <literal>SRCS</literal>
1251         &man.make.1; environment variable.</para>
1252
1253       <para revision="269968">The &man.iscsictl.8; utility has been
1254         updated to include a new flag, <literal>-M</literal>, which
1255         allows modifying the <acronym>iSCSI</acronym> session
1256         parameters without requiring the session to be removed and
1257         added back.</para>
1258
1259       <para revision="270043">The &man.mount.nfs.8; utility has been
1260         updated to support specifying the NFS version as
1261         a <literal>key=<replaceable>value</replaceable></literal> pair
1262         argument to the <literal>-o</literal> flag.  For example, to
1263         specify NFS version 4, the syntax to use is
1264         <literal>-o&nbsp;vers=4</literal>.</para>
1265
1266       <para revision="270242" contrib="sponsor"
1267         sponsor="&spectralogic;">The &man.devd.8; client socket type
1268         has been changed to <literal>SOCK_SEQPACKET</literal>,
1269         providing sequential packet support.</para>
1270
1271       <para revision="270401">Support for the <quote>account</quote>
1272         facility has been added to the &man.pam.group.8;
1273         module.</para>
1274
1275       <para revision="270890">The &man.pathchk.1; utility has been
1276         updated to ensure bytes greater than or equal to 128 are
1277         considered non-portable.</para>
1278
1279       <para revision="270997" contrib="vendor" vendor="&freenas;">The
1280         &man.zdb.8; utility is now included in the set of applications
1281         installed in the <filename
1282           class="directory">/rescue</filename> environment, making it
1283         possible to examine &man.zfs.8; filesystems when <filename
1284           class="directory">/usr</filename> is unavailable.</para>
1285
1286       <para>Several <literal>libc</literal> improvements have been
1287         merged from illumos&trade; and &apple;, providing better
1288         internationalization support and &posix; compliance.</para>
1289
1290       <sect3 xml:id="rc-scripts">
1291         <title><filename>/etc/rc.d</filename> Scripts</title>
1292
1293         <para revision="264438">The <filename>network.subr</filename>
1294           &man.rc.8; script has been updated to loosen the requirement
1295           of listing network aliases in numeric order.  Previously,
1296           a network alias of
1297           <literal>_alias<replaceable>2</replaceable></literal>
1298           would not be created if
1299           <literal>_alias<replaceable>1</replaceable></literal> was
1300           not defined.</para>
1301
1302         <para revision="268098">The &man.service.8; utility has been
1303           updated to check that the &man.rc.d.8; directory exists
1304           before traversing the directory.</para>
1305
1306         <para revision="259141">A regression introduced in
1307           &os;&nbsp;10.0-RELEASE that would prevent proper IPv6
1308           allocation via the &man.jail.8; &man.rc.8; startup script
1309           has been fixed.</para>
1310
1311         <para revision="264438">The &man.rc.8; restriction requiring
1312           &man.mdconfig.8; devices defined in &man.rc.conf.5; to be
1313           listed sequentially has been removed.</para>
1314
1315         <para revision="262566">The &man.sshd.8; &man.rc.d.8; startup
1316           script now generates <literal>ED25519</literal> &man.sshd.8;
1317           host keys if keys do not already exist when
1318           <literal>ssh_keygen_alg()</literal> is invoked.</para>
1319
1320         <para revision="271095">Support for &man.vt.4; keyboard maps
1321           has been added to the <filename>syscons</filename>
1322           &man.rc.d.8; startup script.</para>
1323
1324         <para revision="271260">Support for subdirectories within
1325           <filename
1326             class="directory">/etc/rc.conf.d/<replaceable>service</replaceable>/</filename>
1327           has been added the &man.rc.d.8;.  This allows creating
1328           separate configuration files for services such as
1329           <filename>netif</filename>, for example, where each network
1330           interface can have a separate configuration file.</para>
1331       </sect3>
1332     </sect2>
1333
1334     <sect2 xml:id="contrib">
1335       <title>Contributed Software</title>
1336
1337       <para revision="263285">The &man.xz.1; utility has been updated
1338         to a post-5.0.5 snapshot.</para>
1339
1340       <para revision="264377"><application>OpenSSH</application> has
1341         been updated to version 6.6p1.</para>
1342
1343       <para revision="264911">The &man.nc.1; utility has been updated
1344         to match the version in OpenBSD 5.5.</para>
1345
1346       <para revision="266692"><application>Sendmail</application>
1347         has been updated to 8.14.9.</para>
1348
1349       <para revision="268515">The &man.file.1; utility and
1350         &man.libmagic.3; library have been updated to 5.19.</para>
1351
1352       <para revision="268899">The &man.byacc.1; parser has been
1353         updated to version 20140422.</para>
1354
1355       <para revision="269024" contrib="sponsor"
1356         sponsor="&darpa_afrl;">The &man.lldb.1; debugging library has
1357         been updated to the r202189 snapshot.</para>
1358
1359       <para revision="269257">The &man.unbound.8; caching resolver and
1360         <literal>ldns</literal> have been updated to version
1361         1.4.22.</para>
1362
1363       <para revision="269686"><application>OpenSSL</application> has
1364         been updated to version 1.0.1i.</para>
1365
1366       <para revision="269847">The <quote>lite</quote> version of
1367         <application>Subversion</application> included in the
1368         &os;&nbsp;base system and its dependencies have been
1369         updated:</para>
1370
1371       <itemizedlist>
1372         <listitem>
1373           <para><application>apr</application> has been
1374             updated to version 1.5.1.</para>
1375         </listitem>
1376
1377         <listitem>
1378           <para><application>apr-util</application> has been
1379             updated to version 1.5.3.</para>
1380         </listitem>
1381
1382         <listitem>
1383           <para><application>serf</application> has been
1384             updated to version 1.3.7.</para>
1385         </listitem>
1386
1387         <listitem>
1388           <para><application>svnlite</application> has been
1389             updated to version 1.8.10.</para>
1390         </listitem>
1391       </itemizedlist>
1392
1393       <para revision="270026">The &man.nvi.1; editor has been
1394         update to version 2.1.2-c80f493b038.</para>
1395
1396       <para revision="270031">The &man.fparseln.3; library has
1397         been updated to version 1.7.</para>
1398
1399       <para revision="270415">The <application>lukemftpd</application>
1400         <acronym>FTP</acronym> server has been removed from the
1401         &os;&nbsp;base system.</para>
1402
1403       <para revision="270817">The timezone database has been updated
1404         to version tzdata2014f.</para>
1405     </sect2>
1406
1407     <sect2 xml:id="ports">
1408       <title>Ports/Packages Collection Infrastructure</title>
1409
1410       <para>&nbsp;</para>
1411
1412     </sect2>
1413
1414     <sect2 xml:id="releng">
1415       <title>Release Engineering and Integration</title>
1416
1417       <para revision="263028">The &man.services.mkdb.8; utility has
1418         been updated to include endianness awareness, allowing the
1419         <filename>services.db</filename> database to be created as
1420         part of the release build, regardless of native- or
1421         cross-built releases.</para>
1422     </sect2>
1423
1424     <sect2 xml:id="doc">
1425       <title>Documentation</title>
1426
1427       <para>&nbsp;</para>
1428
1429     </sect2>
1430   </sect1>
1431
1432   <sect1 xml:id="upgrade">
1433     <title>Upgrading from Previous Releases of &os;</title>
1434
1435     <para arch="amd64,i386">Binary upgrades between RELEASE versions
1436       (and snapshots of the various security branches) are supported
1437       using the &man.freebsd-update.8; utility.  The binary upgrade
1438       procedure will update unmodified userland utilities, as well as
1439       unmodified <filename>GENERIC</filename> kernel distributed as
1440       a part of an official &os; release.  The &man.freebsd-update.8;
1441       utility requires that the host being upgraded have Internet
1442       connectivity.</para>
1443
1444     <para>Source-based upgrades (those based on recompiling the &os;
1445       base system from source code) from previous versions are
1446       supported, according to the instructions in
1447       <filename>/usr/src/UPDATING</filename>.</para>
1448
1449     <important>
1450       <para>Upgrading &os; should only be attempted after
1451         backing up <emphasis>all</emphasis> data and configuration
1452         files.</para>
1453     </important>
1454   </sect1>
1455 </article>