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       </sect3>
 658
 659       <sect3 xml:id="disks">
 660         <title>Disks and Storage</title>
 661
 662         <para revision="260385" contrib="sponsor" sponsor="&ix;">The
 663           &man.geom.4; subsystem has been updated to support I/O
 664           direct dispatch.  When safety requirements are met, it
 665           enables avoiding passing I/O requests to GEOM
 666           <literal>g_up</literal>/<literal>g_down</literal> thread,
 667           executing them directly in the caller context, avoiding
 668           CPU bottlenecks in
 669           <literal>g_up</literal>/<literal>g_down</literal> threads,
 670           plus avoid several context switches per I/O.</para>
 671
 672         <para revision="260385" contrib="sponsor" sponsor="&ix;">The
 673           &man.geom.4; RAID driver has been
 674           updated to support unmapped I/O.</para>
 675
 676         <para revision="260387" contrib="sponsor" sponsor="&ix;">The
 677           &man.cam.4; subsystem has been updated to support
 678           finer-grained locking, direct dispatch and multi-queue,
 679           which combined with &man.geom.4; direct dispatch, reduces
 680           lock congestion and improves <acronym>SMP</acronym>
 681           scalability of the SCSI/ATA stack.</para>
 682
 683         <para revision="260478">The &man.geom.8;
 684           <literal>GEOM_MULTIPATH</literal> class has been updated to
 685           support automatic live partition resizing.</para>
 686
 687         <para revision="260857">The &man.virtio_blk.4; driver has been
 688           updated to support unmapped I/O.</para>
 689
 690         <para revision="260858">The &man.virtio_scsi.4; driver has
 691           been updated to support unmapped I/O.</para>
 692
 693         <para revision="264522">Support for LUN-based CD changers has
 694           been removed from the &man.cd.4; driver.</para>
 695
 696         <para revision="264732">Support for
 697           <literal>BIO_DELETE</literal> has been added to &man.zfs.8;
 698           <literal>zvol</literal> volumes.</para>
 699
 700         <para revision="264734">Support for 9th generation HP host bus
 701           adapter cards has been added to &man.ciss.4;.</para>
 702
 703         <para revision="265388" contrib="sponsor" sponsor="&lsi;">The
 704           &man.mpr.4; device has been added,
 705           providing support for LSI Fusion-MPT 3 12Gb SCSI/SATA
 706           controllers.</para>
 707
 708         <para revision="265678">A new <literal>zvol</literal> property
 709           <literal>volmode</literal> and  &man.sysctl.8;
 710           <literal>vfs.zfs.vol.mode</literal> has been added to allow
 711           switching <literal>zvol</literal> between three different
 712           ways of exposing it to a user: <literal>geom</literal>,
 713           <literal>dev</literal> and <literal>none</literal>.</para>
 714
 715         <para revision="265922" contrib="sponsor" sponsor="&lsi;">The
 716           &man.mrsas.4; driver has been added, providing support for
 717           LSI MegaRAID SAS controllers.  The &man.mfi.4; driver will
 718           attach to the controller, by default.  To enable
 719           &man.mrsas.4; add <literal>hw.mfi.mrsas_enable=1</literal>
 720           to <filename>/boot/loader.conf</filename>, which turns off
 721           &man.mfi.4; device probing.</para>
 722
 723         <note>
 724           <para>At this time, the &man.mfiutil.8; utility and the &os;
 725             version of <application>MegaCLI</application> and
 726             <application>StorCli</application> do not work with
 727             &man.mrsas.4;.</para>
 728         </note>
 729
 730         <para revision="266608">Fixed accounting of
 731           <literal>BIO_FLUSH</literal> operation in &man.geom.8;
 732           <literal>GEOM_DISK</literal> class</para>
 733
 734         <para revision="266610">The &man.gstat.8; utility now has an
 735           <literal>-o</literal> option, to display
 736           <quote>other</quote> operations, such as
 737           <literal>BIO_FLUSH</literal>.</para>
 738
 739         <para revision="267084">The &man.mfi.4; driver has been
 740           updated to include support for unmapped I/O.</para>
 741
 742         <para revision="267457">The &man.hpt27xx.4; driver has been
 743           updated with various vendor-supplied bug fixes.</para>
 744
 745         <para revision="270130" contrib="sponsor"
 746           sponsor="&citrix.rd;">Support for unmapped I/O has been
 747           added to the &man.xen.4; <literal>blkfront</literal>
 748           driver.</para>
 749
 750         <para revision="259328" contrib="sponsor" sponsor="&ff;">The
 751           &man.geom.8; <literal>label</literal> class is now aware of
 752           resized partitions.  This corrects an issue where
 753           <command>geom resize</command> would resize the partition,
 754           but the label provider in <filename
 755             class="directory">/dev/gptid/</filename> would not be
 756           resized.</para>
 757
 758         <para revision="260502">The &man.gmirror.8;
 759           utility now has a <literal>resize</literal> command, making
 760           it easier to resize the size of a mirror when all of its
 761           components have been replaced.</para>
 762
 763         <para revision="262967">Support for MegaRAID Fury cards has
 764           been added to the &man.mfi.4; driver.</para>
 765
 766         <para revision="263024">The &man.aacraid.4; driver has been
 767           updated to version 3.2.5.</para>
 768
 769         <para revision="265536">The <literal>GEOM_VINUM</literal>
 770           option is now able to be built both directly into the kernel
 771           or as a &man.kldload.8; loadable module.</para>
 772
 773         <para revision="265912">The &man.geom.8;
 774           <literal>GEOM_PART</literal> class has been updated to
 775           support automatic partition resizing.  Changes to the
 776           partition size are not saved to disk until
 777           <command>gpart commit</command> is run, and prior to saving,
 778           can be reverted with <command>gpart undo</command>.</para>
 779
 780         <para revision="266220">The &man.geom.uncompress.4; module is
 781           built by default which, similar to &man.geom.uzip.4;,
 782           provides support for compressed, read-only disk
 783           images.</para>
 784
 785         <para revision="268091">Support for the
 786           <literal>disklabel64</literal> partitioning scheme has been
 787           added to &man.gpart.8;.</para>
 788
 789         <para revision="270552">A new &man.sysctl.8; and
 790           &man.loader.8; tunable,
 791           <literal>kern.geom.part.mbr.enforce_chs</literal> has been
 792           added to the &man.geom.8; <literal>MBR</literal> partition
 793           class.  When set to a non-zero value,
 794           <literal>GEOM_PART_MBR</literal> will automatically
 795           recalculate the user-specified offset and size for alignment
 796           with the disk geometry.</para>
 797
 798         <para contrib="sponsor" sponsor="&ix;">Many improvements to
 799           the CAM Target Layer (CTL):</para>
 800         <itemizedlist>
 801           <listitem>
 802             <para>Support for <literal>UNMAP</literal>, <literal>WRITE
 803                 SAME</literal>, <literal>COMPARE AND WRITE</literal>,
 804               <literal>XCOPY</literal> and some other SCSI commands
 805               was added to support VMWare VAAI and Microsoft ODX
 806               storage acceleration.</para>
 807           </listitem>
 808           <listitem>
 809             <para revision="265642">The
 810               <literal>READ</literal>/<literal>WRITE</literal> size
 811               limitations were removed by supporting multiple
 812               data moves per command.</para>
 813           </listitem>
 814           <listitem>
 815             <para revision="268556">Finer-grained per-LUN locking and
 816               multiple worker threads for better
 817               <acronym>SMP</acronym> scapability.</para>
 818           </listitem>
 819           <listitem>
 820             <para revision="269297">Memory consumption reduced by
 821               several times by disabling some never used
 822               functionality.</para>
 823           </listitem>
 824           <listitem>
 825             <para revision="269298">The maximum number of
 826               <acronym>SCSI</acronym> ports increased from 32 to
 827               128</para>
 828           </listitem>
 829           <listitem>
 830             <para revision="269429">Improved <literal>zvol</literal>
 831               integration for better performance.</para>
 832           </listitem>
 833         </itemizedlist>
 834
 835         <para revision="270810" contrib="vendor"
 836           vendor="&highpoint;">The &man.hptnr.4; driver has been
 837           updated to version 1.0.1.</para>
 838
 839         <para revision="271234">The &man.mrsas.4; driver has been
 840           added to the <filename>GENERIC</filename> kernel
 841           configuration on &arch.amd64; and &arch.i386;
 842           architectures.</para>
 843       </sect3>
 844
 845       <sect3 xml:id="fs">
 846         <title>File Systems</title>
 847
 848         <para revision="260338">The
 849           <literal>vfs.zfs.zio.use_uma</literal> &man.sysctl.8; has
 850           been re-enabled.  On multi-CPU machines with enough RAM,
 851           this can easily double &man.zfs.8; performance or reduce CPU
 852           usage in half.  It was originally disabled due to memory and
 853           <acronym>KVA</acronym> exhaustion problem reports, which
 854           should be resolved due to several change in the VM
 855           subsystem.</para>
 856
 857         <para revision="260178" contrib="vendor"
 858           vendor="&netflix;">A new flag, <literal>-R</literal>,
 859           has been added to the &man.fsck.ffs.8; utility.  When used,
 860           &man.fsck.ffs.8; will restart itself when too many critical
 861           errors have been detected.</para>
 862
 863         <para revision="263407">The &man.zfs.8; filesystem has been
 864           updated to implement <quote>bookmarks</quote>.  See
 865           &man.zfs.8; for further details.</para>
 866
 867         <para revision="266122">The &man.zfs.8; filesystem has been
 868           updated to allow tuning the minimum <quote>ashift</quote>
 869           value when creating new top-level virtual devices (vdevs).
 870           To set the minimum ashift value, for example when creating
 871           a &man.zpool.8; on <quote>Advanced Format</quote> drives,
 872           set the <literal>vfs.zfs.min_auto_ashift</literal>
 873           &man.sysctl.8; accordingly.</para>
 874
 875         <para revision="266612">The <literal>libzfs</literal> thread
 876           pool <acronym>API</acronym> has been imported from
 877           OpenSolaris, and adapted for &os;.  This change allows
 878           parallel disk scanning, which can reduce &man.zpool.8;
 879           overall import time in some workloads.</para>
 880
 881         <para revision="269651">The &man.restore.8; utility has been
 882           updated to prevent assertion failures when restoring
 883           a <acronym>UFS</acronym> filesystem dump to
 884           a <acronym>ZFS</acronym> filesystem by writing restored
 885           files in block sizes that are a multiple of 1024.</para>
 886
 887         <para revision="269774">Two &man.sysctl.8;s have been added
 888           to the &man.zfs.8; filesystem:</para>
 889
 890         <itemizedlist>
 891           <listitem>
 892             <para>
 893               <literal>vfs.zfs.mg_fragmentation_threshold</literal>:&nbsp;The
 894               percentage of the metaslab group size that should be
 895               considered eligible for allocation, unless all metaslab
 896               groups within the metaslab class have also crossed this
 897               threshold.</para>
 898           </listitem>
 899
 900           <listitem>
 901             <para>
 902               <literal>vfs.zfs.metaslab.fragmentation_threshold</literal>:&nbsp;The
 903               maximum percentage of metaslab fragmentation level to
 904               keep their active state</para>
 905           </listitem>
 906         </itemizedlist>
 907
 908         <para revision="269846">The default &man.zfs.8;
 909           <acronym>ARC</acronym> hash table size has been increased,
 910           and a new &man.loader.8; tunable,
 911           <literal>vfs.zfs.arc_average_blocksize</literal>, has been
 912           added.  Previously, the hash table could be too small, which
 913           would lead to long hash chains and limit performance for
 914           cached reads.  The
 915           <literal>vfs.zfs.arc_average_blocksize</literal> tunable
 916           allows overriding the default block size.  The previous
 917           default was 65536, and default of the new &man.loader.8;
 918           tunable is 8192.</para>
 919
 920         <para revision="270157">The Fast File System
 921           (<acronym>FFS</acronym>) has been updated to support
 922           multi-threaded soft updates.  Previously, soft updates were
 923           handled by a single thread, and as of this change, now have
 924           one thread per <acronym>FFS</acronym> mountpoint.</para>
 925
 926         <para revision="270892" contrib="sponsor" sponsor="&ff;">The
 927           new filesystem automount facility, &man.autofs.5;, has been
 928           merged from &os;-CURRENT.  The new &man.autofs.5; facility
 929           is similar to that found in other &unix;-like operating
 930           systems, such as OS&nbsp;X&trade; and Solaris&trade;.  The
 931           &man.autofs.5; facility uses a &sun;-compatible
 932           &man.auto.master.5; configuration file, and is administered
 933           with the &man.automount.8; userland utility, and the
 934           &man.automountd.8; and &man.autounmountd.8; daemons.</para>
 935       </sect3>
 936     </sect2>
 937
 938     <sect2 xml:id="userland">
 939       <title>Userland Changes</title>
 940
 941       <para revision="260177" contrib="sponsor"
 942         sponsor="&netflix;">A new flag is added to &man.camcontrol.8;,
 943         <literal>-b</literal>, which outputs the existing buses and
 944         their parents.</para>
 945
 946       <para revision="262075">The &man.newsyslog.8; utility has been
 947         updated to rotate files based on the actual file size instead
 948         of the blocks on disk.  This matches the behavior documented
 949         in &man.newsyslog.conf.5;.</para>
 950
 951       <para revision="262384">The location of the &man.rctl.8;
 952         configuration file can now be overridden in &man.rc.conf.5;.
 953         To use a non-default location, set
 954         <literal>rctl_rules</literal> in &man.rc.conf.5; to the
 955         location of the file.</para>
 956
 957       <para revision="262855">The <application>ATF</application> test
 958         suite has been updated to version 0.20.  The test suite is
 959         disabled by default in &os;&nbsp;10.1, and can be enabled by
 960         adding <literal>WITH_TESTS=yes</literal> to
 961         &man.src.conf.5;.</para>
 962
 963       <para revision="263019">The <literal>libucl</literal> library
 964         (Unified Configuration Library) has been merged from
 965         &os;-CURRENT.</para>
 966
 967       <para revision="263020">The &man.pkg.7; bootstrapping utility
 968         has been synced with the version in &os;-CURRENT.</para>
 969
 970       <para revision="263403">The &man.zfs.8; userland utility has
 971         been updated to include aliases for
 972         <command>snapshot</command>, which allows use of <command>zfs
 973           list -t snap</command> and <command>zfs
 974           snap</command>.</para>
 975
 976       <para revision="263405">The &man.zfs.8; userland utility has
 977         been updated to include a new flag to <command>zfs
 978           list</command>, <literal>-p</literal>, which when specified,
 979         prints the output in a parsable format.</para>
 980
 981       <para revision="263783">The Blowfish password format
 982         implementation updated.  Support for &dollar;2b&dollar; has
 983         been added, allowing use of passwords greater than 256
 984         characters long.</para>
 985
 986       <para revision="264497">The &man.iconv.3; library has been
 987         updated to match NetBSD, providing several bug fixes.</para>
 988
 989       <para revision="265265">The &man.date.1; utility has been
 990         updated to include a new flag, <literal>-R</literal>, which
 991         prints the date and time output as specified in RFC
 992         2822.</para>
 993
 994       <para revision="265533">The &man.bc.1; utility has been updated
 995         to version 1.1, in sync with the version in OpenBSD.</para>
 996
 997       <para revision="265604" contrib="vendor"
 998         vendor="&netflix;">The &man.pmcstat.8; utility has been
 999         updated to include a new flag, <literal>-a</literal>, which
1000         when specified, produces a full stack track on the sampled
1001         points.</para>
1002
1003       <para revision="265701">The &man.netstat.8; and &man.route.8;
1004         utilities have been updated to include a shorthand equivalent
1005         to the <literal>-f inet</literal> and <literal>-f
1006           inet6</literal> address specifiers, <literal>-4</literal>
1007         and <literal>-6</literal>, respectively.</para>
1008
1009       <para revision="265879">The &man.crypt.3; library now defaults
1010         to SHA512 for password hashing.</para>
1011
1012       <para revision="266014">The &man.gvinum.8; utility has been
1013         updated to allow forceful configuration reset with the
1014         <literal>-f</literal> flag.  Additionally, a bug that would
1015         prevent <literal>-f</literal> from properly creating
1016         a &man.gvinum.8; configuration has been fixed.</para>
1017
1018       <para revision="266029">The &man.login.conf.5; file now takes
1019         precedence over the shell-specific environment files.  In
1020         particular, the <literal>PATH</literal>,
1021         <literal>BLOCKSIZE</literal> variables are commented from
1022         <filename>/usr/share/skel/dot.profile</filename>, and the
1023         <literal>path</literal>, <literal>BLOCKSIZE</literal>, and
1024         <literal>umask</literal> variables have been commented from
1025         <filename>/usr/share/skel/dot.cshrc</filename>.</para>
1026
1027       <para revision="266272">The &man.binmiscctl.8; userland utility
1028         and related image activator features have been merged from
1029         &os;-CURRENT.</para>
1030
1031       <para revision="266279">The &man.ps.1; utility has been
1032         updated to include the <literal>-J</literal> flag, used to
1033         filter output by matching &man.jail.8; IDs and names.
1034         Additionally, argument <literal>0</literal> can be used to
1035         <literal>-J</literal> to only list processes running on the
1036         host system.</para>
1037
1038       <para revision="266280">The &man.top.1; utility has been updated
1039         to filter by &man.jail.8; ID or name, in followup to the
1040         &man.ps.1; change in <literal>r265229</literal>.</para>
1041
1042       <para revision="266610">The &man.gstat.8; utility has been
1043         updated to include a new flag, <literal>-o</literal>.  When
1044         set, &man.gstat.8; will display statistics for operations
1045         such as <literal>BIO_FLUSH</literal>.</para>
1046
1047       <para revision="266632">The &man.fetch.3; library has been
1048         updated to look for root <acronym>SSL</acronym> certificates
1049         in <filename class="directory">/usr/local/etc/ssl/</filename>
1050         before <filename
1051           class="directory">/etc/ssl/</filename>.</para>
1052
1053       <para revision="266715">The &man.clang.1;/llvm suite has been
1054         updated to version 3.4.1.</para>
1055
1056       <para revision="266816">The Blowfish password format
1057         has been changed to &dollar;2b&dollar; by default.</para>
1058
1059       <para revision="266888">The amount of data collected for
1060         &man.hwpmc.4; has been updated to work with modern processors
1061         and larger amounts of available memory.</para>
1062
1063       <para revision="266890">The &man.pmcstat.8; utility has been
1064         updated to include a new flag, <literal>-l</literal>, which
1065         ends event collection after the specified number of
1066         seconds.</para>
1067
1068       <para revision="266953">The &man.mergemaster.8; utility has
1069         been updated to avoid printing
1070         <quote><filename>/var/tmp/temproot</filename>
1071           disappeared</quote> if there is nothing to compare.</para>
1072
1073       <para revision="267056">The &os; installer, &man.bsdinstall.8;,
1074         has been updated to include optional
1075         &man.geli.8;-encrypted or &man.gmirror.8;-mirrored swap
1076         devices when installing onto a full &man.zfs.8; filesystem.
1077         Additionally, the parent &man.zfs.8; dataset is now configured
1078         with <literal>lz4</literal> compression enabled.</para>
1079
1080       <para revision="267113">The default &man.newsyslog.conf.5; now
1081         includes files in the
1082         <filename>/etc/newsyslog.conf.d/</filename> and
1083         <filename>/usr/local/etc/newsyslog.conf.d/</filename>
1084         directories by default for &man.newsyslog.8;.</para>
1085
1086       <para revision="267161">The &man.realpath.1; utility has been
1087         updated to return <literal>ENOTDIR</literal> on paths
1088         components <quote>.</quote> and <quote>..</quote> that are
1089         not directories, such as <filename
1090           class="directory">/dev/null/.</filename> or <filename
1091           class="directory">/dev/null/..</filename>.</para>
1092
1093       <para revision="267236">A new flag, <quote>onifconsole</quote>
1094         has been added to <filename>/etc/ttys</filename>.  This allows
1095         the system to provide a login prompt via serial console if the
1096         device is an active kernel console, otherwise it is equivalent
1097         to <literal>off</literal>.</para>
1098
1099       <para revision="267341">Support for legacy
1100         <acronym>PCI</acronym> devices has been removed from
1101         &man.bhyve.8;.</para>
1102
1103       <para revision="267450">The &man.bhyve.8; userland utility
1104         has been updated to include SMBIOS support.  A new flag has
1105         been added, <literal>-U</literal>, which allows specifying the
1106         UUID of the guest in the System Information structure.</para>
1107
1108       <para revision="267734">The &os;&nbsp;Project has migrated
1109         from the <application>GNATS</application> bug tracking system
1110         to <application>Bugzilla</application>.  The &man.send-pr.1;
1111         utility used for submitting problem reports has been replaced
1112         with a stub shell script that instructs to use the Bugzilla
1113         web interface.</para>
1114
1115       <para revision="267747">The &man.patch.1; utility has been
1116         updated to include a <literal>--dry-run</literal> flag, which
1117         is equivalent to <literal>--check</literal> and
1118         <literal>-C</literal>.</para>
1119
1120       <para revision="267878">A bug in &man.bsdgrep.1; that would
1121         prevent patterns from being matched under certain conditions
1122         has been fixed.</para>
1123
1124       <para revision="267979">The &man.procstat.1; utility has been
1125         updated to include two new flags, <literal>-r</literal> and
1126         <literal>-H</literal>.  When <literal>-r</literal> is
1127         specified, &man.procstat.1; will print current resource usage
1128         about the process(es).  When <literal>-H</literal> is
1129         specified, &man.procstat.1; will print information about
1130         threads rather than the process(es).</para>
1131
1132       <note>
1133         <para>The <literal>-H</literal> flag is currently only used
1134           with <literal>-r</literal> to display resource usage for
1135           individual threads, rather than the entire process.</para>
1136       </note>
1137
1138       <para revision="268019">The &man.sed.1; utility has been
1139         updated to include a new flag, <literal>-u</literal>, which
1140         enables unbuffered output when specified.</para>
1141
1142       <para revision="268161">The &man.mkimg.1; utility has been
1143         merged from &os;-CURRENT.</para>
1144
1145       <para revision="268700" contrib="sponsor"
1146         sponsor="&spectralogic;">The &man.camcontrol.8; has been
1147         updated to include a new <literal>persist</literal> command,
1148         which allows issuing <command>SCSI PERSISTENT RESERVE
1149           IN</command> and <command>SCSI PERSISTENT RESERVE
1150           OUT</command>.</para>
1151
1152       <para revision="268791">The &man.gstat.8; utility has been
1153         updated to include a new flag, <literal>-p</literal>, which
1154         displays only physical providers when specified.</para>
1155
1156       <para revision="268903">The &man.kldstat.8; utility has been
1157         updated to allow <literal>-q</literal> to be specified when
1158         also specifying <literal>-n
1159           <replaceable>module.ko</replaceable></literal>.</para>
1160
1161       <para revision="269177">The &man.mkimg.1; utility has been
1162         updated to include support for both fixed- and
1163         dynamically-allocated images for the <acronym>VHD</acronym>
1164         and <acronym>VMDK</acronym> formats.</para>
1165
1166       <para revision="269220">The &man.random.4; entropy collection
1167         script, <filename>/usr/libexec/save-entropy</filename>, no
1168         longer runs within &man.jail.8; environments.</para>
1169
1170       <para revision="269397">The &man.bhyve.8; wrapper script,
1171         <filename>/usr/share/examples/bhyve/vmrun.sh</filename>,
1172         has been synced with &os;-CURRENT.</para>
1173
1174       <para>This update includes:</para>
1175
1176       <itemizedlist>
1177         <listitem>
1178           <para>A new flag, <literal>-e</literal>, has been added,
1179             which is used to set &man.loader.8; environment
1180             variables.</para>
1181         </listitem>
1182
1183         <listitem>
1184           <para>A new flag, <literal>-C</literal>, has been added,
1185             which is used to specify the guest console device.</para>
1186         </listitem>
1187
1188         <listitem>
1189           <para>A new flag, <literal>-H</literal>, has been added,
1190             which is used to pass the host path to
1191             &man.bhyveload.8;.</para>
1192         </listitem>
1193
1194         <listitem>
1195           <para>Support for multiple disk and &man.tap.4; devices
1196             has been added.</para>
1197         </listitem>
1198
1199         <listitem>
1200           <para>The <literal>-I</literal> flag has been
1201             removed.</para>
1202         </listitem>
1203       </itemizedlist>
1204
1205       <para revision="269398">The &man.nfsd.8; server update to 4.1,
1206         adding support for RFC5661, has merged from
1207         &os;-CURRENT.</para>
1208
1209       <para revision="269432" arch="ia64">The serial terminals
1210         <filename>ttyu0</filename> and <filename>ttyu1</filename> have
1211         been updated to <literal>onifconsole</literal> by default in
1212         &man.ttys.5;, which either can be the serial console,
1213         depending on the platform.</para>
1214
1215       <para revision="269800">The &man.ping6.8; utility has been
1216         updated to reset <literal>itimer</literal> when the maximum
1217         number of packets to send have been reached.  This prevents
1218         &man.ping6.8; from exiting when the interval in set to a small
1219         value and a low number of packets to send has been
1220         specified.</para>
1221
1222       <para revision="269805">The &man.jail.8; utility has been
1223         updated to support extra &man.ifconfig.8; arguments for the
1224         <literal>ip4.addr</literal> and <literal>ip6.addr</literal>
1225         parameters.  This change allows &man.carp.4; interfaces to
1226         be used within the &man.jail.8;.</para>
1227
1228       <para revision="269946">Support for generating and compiling
1229         <acronym>USDT</acronym> <application>DTrace</application>
1230         probes has been improved.  <application>DTrace</application>
1231         <acronym>USDT</acronym> files are now handled similar to
1232         &man.lex.1; and &man.yacc.1; files, meaning support for
1233         handling <application>D</application> files as part of the
1234         build process is built into the <literal>SRCS</literal>
1235         &man.make.1; environment variable.</para>
1236
1237       <para revision="269968">The &man.iscsictl.8; utility has been
1238         updated to include a new flag, <literal>-M</literal>, which
1239         allows modifying the <acronym>iSCSI</acronym> session
1240         parameters without requiring the session to be removed and
1241         added back.</para>
1242
1243       <para revision="270043">The &man.mount.nfs.8; utility has been
1244         updated to support specifying the NFS version as
1245         a <literal>key=<replaceable>value</replaceable></literal> pair
1246         argument to the <literal>-o</literal> flag.  For example, to
1247         specify NFS version 4, the syntax to use is
1248         <literal>-o&nbsp;vers=4</literal>.</para>
1249
1250       <para revision="270242" contrib="sponsor"
1251         sponsor="&spectralogic;">The &man.devd.8; client socket type
1252         has been changed to <literal>SOCK_SEQPACKET</literal>,
1253         providing sequential packet support.</para>
1254
1255       <para revision="270401">Support for the <quote>account</quote>
1256         facility has been added to the &man.pam.group.8;
1257         module.</para>
1258
1259       <para revision="270890">The &man.pathchk.1; utility has been
1260         updated to ensure bytes greater than or equal to 128 are
1261         considered non-portable.</para>
1262
1263       <para revision="270997" contrib="vendor" vendor="&freenas;">The
1264         &man.zdb.8; utility is now included in the set of applications
1265         installed in the <filename
1266           class="directory">/rescue</filename> environment, making it
1267         possible to examine &man.zfs.8; filesystems when <filename
1268           class="directory">/usr</filename> is unavailable.</para>
1269
1270       <para>Several <literal>libc</literal> improvements have been
1271         merged from illumos&trade; and &apple;, providing better
1272         internationalization support and &posix; compliance.</para>
1273
1274       <sect3 xml:id="rc-scripts">
1275         <title><filename>/etc/rc.d</filename> Scripts</title>
1276
1277         <para revision="264438">The <filename>network.subr</filename>
1278           &man.rc.8; script has been updated to loosen the requirement
1279           of listing network aliases in numeric order.  Previously,
1280           a network alias of
1281           <literal>_alias<replaceable>2</replaceable></literal>
1282           would not be created if
1283           <literal>_alias<replaceable>1</replaceable></literal> was
1284           not defined.</para>
1285
1286         <para revision="268098">The &man.service.8; utility has been
1287           updated to check that the &man.rc.d.8; directory exists
1288           before traversing the directory.</para>
1289
1290         <para revision="259141">A regression introduced in
1291           &os;&nbsp;10.0-RELEASE that would prevent proper IPv6
1292           allocation via the &man.jail.8; &man.rc.8; startup script
1293           has been fixed.</para>
1294
1295         <para revision="264438">The &man.rc.8; restriction requiring
1296           &man.mdconfig.8; devices defined in &man.rc.conf.5; to be
1297           listed sequentially has been removed.</para>
1298
1299         <para revision="262566">The &man.sshd.8; &man.rc.d.8; startup
1300           script now generates <literal>ED25519</literal> &man.sshd.8;
1301           host keys if keys do not already exist when
1302           <literal>ssh_keygen_alg()</literal> is invoked.</para>
1303
1304         <para revision="271095">Support for &man.vt.4; keyboard maps
1305           has been added to the <filename>syscons</filename>
1306           &man.rc.d.8; startup script.</para>
1307
1308         <para revision="271260">Support for subdirectories within
1309           <filename
1310             class="directory">/etc/rc.conf.d/<replaceable>service</replaceable>/</filename>
1311           has been added the &man.rc.d.8;.  This allows creating
1312           separate configuration files for services such as
1313           <filename>netif</filename>, for example, where each network
1314           interface can have a separate configuration file.</para>
1315       </sect3>
1316     </sect2>
1317
1318     <sect2 xml:id="contrib">
1319       <title>Contributed Software</title>
1320
1321       <para revision="263285">The &man.xz.1; utility has been updated
1322         to a post-5.0.5 snapshot.</para>
1323
1324       <para revision="264377"><application>OpenSSH</application> has
1325         been updated to version 6.6p1.</para>
1326
1327       <para revision="264911">The &man.nc.1; utility has been updated
1328         to match the version in OpenBSD 5.5.</para>
1329
1330       <para revision="266692"><application>Sendmail</application>
1331         has been updated to 8.14.9.</para>
1332
1333       <para revision="268515">The &man.file.1; utility and
1334         &man.libmagic.3; library have been updated to 5.19.</para>
1335
1336       <para revision="268899">The &man.byacc.1; parser has been
1337         updated to version 20140422.</para>
1338
1339       <para revision="269024" contrib="sponsor"
1340         sponsor="&darpa_afrl;">The &man.lldb.1; debugging library has
1341         been updated to the r202189 snapshot.</para>
1342
1343       <para revision="269257">The &man.unbound.8; caching resolver and
1344         <literal>ldns</literal> have been updated to version
1345         1.4.22.</para>
1346
1347       <para revision="269686"><application>OpenSSL</application> has
1348         been updated to version 1.0.1i.</para>
1349
1350       <para revision="269847">The <quote>lite</quote> version of
1351         <application>Subversion</application> included in the
1352         &os;&nbsp;base system and its dependencies have been
1353         updated:</para>
1354
1355       <itemizedlist>
1356         <listitem>
1357           <para><application>apr</application> has been
1358             updated to version 1.5.1.</para>
1359         </listitem>
1360
1361         <listitem>
1362           <para><application>apr-util</application> has been
1363             updated to version 1.5.3.</para>
1364         </listitem>
1365
1366         <listitem>
1367           <para><application>serf</application> has been
1368             updated to version 1.3.7.</para>
1369         </listitem>
1370
1371         <listitem>
1372           <para><application>svnlite</application> has been
1373             updated to version 1.8.10.</para>
1374         </listitem>
1375       </itemizedlist>
1376
1377       <para revision="270026">The &man.nvi.1; editor has been
1378         update to version 2.1.2-c80f493b038.</para>
1379
1380       <para revision="270031">The &man.fparseln.3; library has
1381         been updated to version 1.7.</para>
1382
1383       <para revision="270415">The <application>lukemftpd</application>
1384         <acronym>FTP</acronym> server has been removed from the
1385         &os;&nbsp;base system.</para>
1386
1387       <para revision="270817">The timezone database has been updated
1388         to version tzdata2014f.</para>
1389     </sect2>
1390
1391     <sect2 xml:id="ports">
1392       <title>Ports/Packages Collection Infrastructure</title>
1393
1394       <para>&nbsp;</para>
1395
1396     </sect2>
1397
1398     <sect2 xml:id="releng">
1399       <title>Release Engineering and Integration</title>
1400
1401       <para revision="263028">The &man.services.mkdb.8; utility has
1402         been updated to include endianness awareness, allowing the
1403         <filename>services.db</filename> database to be created as
1404         part of the release build, regardless of native- or
1405         cross-built releases.</para>
1406     </sect2>
1407
1408     <sect2 xml:id="doc">
1409       <title>Documentation</title>
1410
1411       <para>&nbsp;</para>
1412
1413     </sect2>
1414   </sect1>
1415
1416   <sect1 xml:id="upgrade">
1417     <title>Upgrading from Previous Releases of &os;</title>
1418
1419     <para arch="amd64,i386">Binary upgrades between RELEASE versions
1420       (and snapshots of the various security branches) are supported
1421       using the &man.freebsd-update.8; utility.  The binary upgrade
1422       procedure will update unmodified userland utilities, as well as
1423       unmodified <filename>GENERIC</filename> kernel distributed as
1424       a part of an official &os; release.  The &man.freebsd-update.8;
1425       utility requires that the host being upgraded have Internet
1426       connectivity.</para>
1427
1428     <para>Source-based upgrades (those based on recompiling the &os;
1429       base system from source code) from previous versions are
1430       supported, according to the instructions in
1431       <filename>/usr/src/UPDATING</filename>.</para>
1432
1433     <important>
1434       <para>Upgrading &os; should only be attempted after
1435         backing up <emphasis>all</emphasis> data and configuration
1436         files.</para>
1437     </important>
1438   </sect1>
1439 </article>