1 <?xml version="1.0" encoding="iso-8859-1"?>
2 <!DOCTYPE article PUBLIC "-//FreeBSD//DTD DocBook XML V5.0-Based Extension//EN"
3 "../../../share/xml/freebsd50.dtd" [
4 <!ENTITY % release PUBLIC "-//FreeBSD//ENTITIES Release Specification//EN" "release.ent">
6 <!ENTITY % sponsor PUBLIC "-//FreeBSD//ENTITIES Sponsor Specification//EN" "sponsor.ent">
8 <!ENTITY % vendor PUBLIC "-//FreeBSD//ENTITIES Vendor Specification//EN" "vendor.ent">
10 <!ENTITY security SYSTEM "../../share/xml/security.xml">
11 <!ENTITY errata SYSTEM "../../share/xml/errata.xml">
13 <article xmlns="http://docbook.org/ns/docbook"
14 xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0">
17 <title>&os; &release.current; Release Notes</title>
20 <orgname>The &os; Project</orgname>
23 <pubdate>$FreeBSD$</pubdate>
25 <!-- Last rev: 284813 -->
29 <holder role="mailto:doc@FreeBSD.org">The &os; Documentation
33 <legalnotice xml:id="trademarks" role="trademarks">
43 <para>The release notes for &os; &release.current; contain
44 a summary of the changes made to the &os; base system on the
45 &release.branch; development line. This document lists
46 applicable security advisories that were issued since the last
47 release, as well as significant changes to the &os; kernel and
48 userland. Some brief remarks on upgrading are also
53 <sect1 xml:id="intro">
54 <title>Introduction</title>
56 <para>This document contains the release notes for &os;
57 &release.current;. It describes recently added, changed, or
58 deleted features of &os;. It also provides some notes on
59 upgrading from previous versions of &os;.</para>
61 <para releasetype="current">The &release.type; distribution to
62 which these release notes apply represents the latest point
63 along the &release.branch; development branch since
64 &release.branch; was created. Information regarding pre-built,
65 binary &release.type; distributions along this branch can be
67 xlink:href="&release.url;">&release.url;</uri>.</para>
69 <para releasetype="snapshot">The &release.type; distribution to
70 which these release notes apply represents a point along the
71 &release.branch; development branch between &release.prev; and
72 the future &release.next;. Information regarding pre-built,
73 binary &release.type; distributions along this branch can be
75 xlink:href="&release.url;">&release.url;</uri>.</para>
77 <para releasetype="release">This distribution of &os;
78 &release.current; is a &release.type; distribution. It can be
79 found at <uri xlink:href="&release.url;">&release.url;</uri> or
80 any of its mirrors. More information on obtaining this (or
81 other) &release.type; distributions of &os; can be found in the
83 xlink:href="&url.books.handbook;/mirrors.html"><quote>Obtaining
84 &os;</quote> appendix</link> to the <link
85 xlink:href="&url.books.handbook;/">&os;
86 Handbook</link>.</para>
88 <para>All users are encouraged to consult the release errata
89 before installing &os;. The errata document is updated with
90 <quote>late-breaking</quote> information discovered late in the
91 release cycle or after the release. Typically, it contains
92 information on known bugs, security advisories, and corrections
93 to documentation. An up-to-date copy of the errata for &os;
94 &release.current; can be found on the &os; Web site.</para>
96 <para>This document describes the most user-visible new or changed
97 features in &os; since &release.prev;.</para>
99 <para>Typical release note items document recent security
100 advisories issued after &release.prev;, new drivers or hardware
101 support, new commands or options, major bug fixes, or
102 contributed software upgrades. They may also list changes to
103 major ports/packages or release engineering practices. Clearly
104 the release notes cannot list every single change made to &os;
105 between releases; this document focuses primarily on security
106 advisories, user-visible changes, and major architectural
110 <sect1 xml:id="upgrade">
111 <title>Upgrading from Previous Releases of &os;</title>
113 <para arch="amd64,i386">Binary upgrades between RELEASE versions
114 (and snapshots of the various security branches) are supported
115 using the &man.freebsd-update.8; utility. The binary upgrade
116 procedure will update unmodified userland utilities, as well as
117 unmodified <filename>GENERIC</filename> kernel distributed as
118 a part of an official &os; release. The &man.freebsd-update.8;
119 utility requires that the host being upgraded have Internet
122 <para>Source-based upgrades (those based on recompiling the &os;
123 base system from source code) from previous versions are
124 supported, according to the instructions in
125 <filename>/usr/src/UPDATING</filename>.</para>
128 <para>Upgrading &os; should only be attempted after
129 backing up <emphasis>all</emphasis> data and configuration
134 <sect1 xml:id="security-errata">
135 <title>Security and Errata</title>
137 <para>This section lists the various Security Advisories and
138 Errata Notices since &release.prev;.</para>
140 <sect2 xml:id="security">
141 <title>Security Advisories</title>
146 <sect2 xml:id="errata">
147 <title>Errata Notices</title>
153 <sect1 xml:id="userland">
154 <title>Userland</title>
156 <para>This section covers changes and additions to userland
157 applications, contributed software, and system utilities.</para>
159 <sect2 xml:id="userland-config">
160 <title>Userland Configuration Changes</title>
162 <para revision="276991">The &man.termcap.5; file is installed
163 as-is from sources, instead of reordering, creating
164 <filename>/etc/termcap.db</filename> by default, providing
165 a performance improvements to applications that use the
166 &man.termcap.5; database, such as &man.vi.1; and
167 &man.ncurses.3;.</para>
170 <sect2 xml:id="userland-programs">
171 <title>Userland Application Changes</title>
173 <para revision="275040">A new utility, &man.dpv.1;, has been
174 added to the base system, providing a &man.dialog.1;-style
175 progress view from one or more input streams. A corresponding
176 library, &man.dpv.3;, has also been added.</para>
178 <para revision="275945">The &man.elfdump.1; utility has been
179 updated to support capability mode provided by
180 &man.capsicum.4;.</para>
182 <para revision="277434" contrib="sponsor" sponsor="&ff;">The
183 &man.fstyp.8; utility has been added, which is used to
184 determine the filesystem on a specified device.</para>
186 <para revision="278968" contrib="sponsor" sponsor="&ff;">The
187 &man.mkimg.1; utility has been updated to support the
188 <acronym>MBR</acronym> <acronym>EFI</acronym> partition
191 <para revision="281044">A regression in the &man.libarchive.3;
192 library that would prevent a directory from being included in
193 the archive when <literal>--one-file-system</literal> is used
194 has been fixed.</para>
196 <para revision="281161" contrib="sponsor"
197 sponsor="&limelight;">The &man.netstat.8; utility has been
198 updated to include a new flag, <literal>-R</literal>, which is
199 used to dump <acronym>RSS</acronym>/flow information.</para>
201 <para revision="281936" contrib="sponsor" sponsor="&ff;">The
202 &man.ar.1; utility has been updated to set
203 <literal>ARCHIVE_EXTRACT_SECURE_SYMLINKS</literal> and
204 <literal>ARCHIVE_EXTRACT_SECURE_NODOTDOT</literal> to disallow
205 directory traversal when extracting an archive, similar to
208 <para revision="282278">A race condition in &man.wc.1; that
209 would cause final results to be sent to &man.stderr.4; when
210 receiving the <literal>SIGINFO</literal> signal has been
213 <para revision="282870" contrib="sponsor"
214 sponsor="&scaleengine;">The &man.freebsd-update.8; utility has
215 been updated to prevent fetching updated binary patches when
216 a previous upgrade has not been thoroughly completed.</para>
218 <para revision="282974" contrib="sponsor" sponsor="&ff;">The
219 &man.uefisign.8; utility has been added.</para>
221 <para revision="283875" contrib="sponsor"
222 sponsor="&multiplay;">The &man.chflags.1;, &man.chgrp.1;,
223 &man.chmod.1;, and &man.chown.8; utilities now affect symbolic
224 links when the <literal>-R</literal> flag is specified, as
225 documented in &man.symlink.7;.</para>
227 <para revision="283258">The &man.date.1; utility has been
228 updated to print the modification time of the file passed as
229 an argument to the <literal>-r</literal> flag, improving
230 compatibility with the <acronym>GNU</acronym> &man.date.1;
231 utility behavior.</para>
233 <para revision="284523">The &man.mkimg.1; utility has been
234 updated to include a new flag, <literal>-c</literal>, which
235 allows specifying the capacity of the target disk
238 <para revision="285092">The &man.pw.8; utility has been updated
239 with a new flag, <literal>-R</literal>, that sets the root
240 directory within which the utility will operate.</para>
243 <sect2 xml:id="userland-contrib">
244 <title>Contributed Software</title>
246 <para revision="282746" contrib="sponsor" sponsor="&ff;">The
247 &man.resolvconf.8; utility has been updated to version
250 <para revision="283270">The &man.nc.1; utility has been updated
251 to the OpenBSD 5.7 version.</para>
253 <para revision="284398">Timezone data files have been updated to
254 version 2015e.</para>
256 <para revision="284460">The &man.acpi.4; subsystem has been
257 updated to version 20150515.</para>
259 <para revision="284778">The &man.file.1; utility has been
260 updated to version 5.23.</para>
262 <para revision="285206">The &man.unbound.8; utility has been
263 updated to version 1.5.3.</para>
265 <para revision="285305">The <application>sendmail</application>
266 utility has been updated to version 8.15.2.</para>
268 <para revision="285330"><application>OpenSSL</application> has
269 been updated to version 1.0.1p.</para>
271 <para revision="285612">The <application>ntp</application>
272 suite has been updated to version 4.2.8p3.</para>
274 <para revision="285750" contrib="sponsor" sponsor="&dell;">The
275 &man.ssh.1; utility has been updated to re-implement hostname
276 canonicalization before locating the host in
277 <filename>known_hosts</filename>.</para>
279 <para revision="286084">The &man.tar.1; utility has been updated
280 to fix an issue that would prevent compressing sparse
284 <sect2 xml:id="userland-installer">
285 <title>Installation and Configuration Tools</title>
287 <para revision="285769" contrib="sponsor"
288 sponsor="&scaleengine;">Support for detecting and implementing
289 a workaround for various laptops and motherboards that do not
290 boot properly from <acronym>GPT</acronym>-partitioned disks
291 has been added to &man.bsdinstall.8;. Additionally, the
292 <literal>active</literal> flag will be set on the partition
295 <para revision="285721" contrib="sponsor"
296 sponsor="&scaleengine;">Support for detecting and implementing
297 aligning partitions on 1Mb boundaries has been added to
298 &man.bsdinstall.8;.</para>
300 <para revision="285769" contrib="sponsor"
301 sponsor="&scaleengine;">Support for selecting the partitioning
302 scheme when installing on the <acronym>UFS</acronym>
303 filesystem has been added to &man.bsdinstall.8;.</para>
306 <sect2 xml:id="userland-rc">
307 <title><filename class="directory">/etc/rc.d</filename>
310 <para revision="284009">A new &man.rc.8; script,
311 <filename>growfs</filename>, has been added, which will resize
312 the root filesystem on boot if <filename>/firstboot</filename>
316 <sect2 xml:id="userland-periodic">
317 <title><filename class="directory">/etc/periodic</filename>
320 <para revision="277520" contrib="sponsor" sponsor="&ff;">A new
321 &man.periodic.8; script,
322 <filename>510.status-world-kernel</filename>, has been added,
323 which evaluates the running userland and kernel versions from
324 the &man.uname.1; <literal>-U</literal> and
325 <literal>-K</literal> arguments, and prints an error if the
326 system userland and kernel are not in sync.</para>
329 <sect2 xml:id="userland-libraries">
330 <title>Runtime Libraries and API</title>
332 <para revision="275040">A new file configuration library,
333 &man.figpar.3;, has been added to the base system.</para>
335 <para revision="276686" contrib="sponsor" sponsor="&ff;">The
336 &man.procctl.2; system call has been updated to include
337 a facility for non-&man.init.8; processes to be declared as
338 the reaper of child processes and their decendants.</para>
340 <para revision="280392">The &man.setmode.3; function has been
341 updated to consistently set <literal>errno</literal> on
345 <sect2 xml:id="userland-abi">
346 <title>ABI Compatibility</title>
348 <para revision="275807">The &linux; compatibility version has
349 been updated to <literal>2.6.18</literal>. The
350 <literal>compat.linux.osrelease</literal> &man.sysctl.8; is
351 evaluated when building the <filename
352 role="package">emulators/linux-c6</filename> and related
357 <sect1 xml:id="kernel">
358 <title>Kernel</title>
360 <para>This section covers changes to kernel configurations, system
361 tuning, and system control parameters that are not otherwise
364 <sect2 xml:id="kernel-bugfix">
365 <title>Kernel Bug Fixes</title>
367 <para revision="276068">A kernel panic triggered when destroying
368 a &man.vnet.9; &man.jail.8; configured with &man.gif.4; has
371 <para revision="284018">A kernel panic triggered when destroying
372 a &man.vnet.9; &man.jail.8; configured with &man.gre.4; has
376 <sect2 xml:id="kernel-config">
377 <title>Kernel Configuration</title>
379 <para revision="282065" contrib="sponsor" sponsor="&ff;">The
380 <literal>PAE_TABLES</literal> kernel configuration option has
381 been added for &os;/&arch.i386;, which instructs &man.pmap.9;
382 to use <acronym>PAE</acronym> format for page tables while
383 maintaining a 32-bit physical address size elsewhere in the
384 kernel. The use of this option can enhance application-level
385 security by enabling the creation of <quote>no execute</quote>
386 mappings on modern &arch.i386; processors. Unlike the
387 <literal>PAE</literal> option, <literal>PAE_TABLES</literal>
388 preserves kernel binary interface (<acronym>KBI</acronym>)
389 compatibility with non-<literal>PAE</literal> kernels,
390 allowing non-<literal>PAE</literal> kernel modules and drivers
391 to work with a <literal>PAE_TABLES</literal>-enabled kernel.
392 Additionally, system limits are tuned for 4GB maximum
393 <acronym>RAM</acronym>, avoiding kernel virtual address space
394 (<acronym>KVA</acronym>) exhaustion.</para>
396 <para revision="282826">The <literal>SIFTR</literal> kernel
397 configuration has been added, allowing building &man.siftr.4;
398 statically into the kernel.</para>
400 <para revision="283076" contrib="sponsor" sponsor="&intelcorp;"
401 arch="amd64,i386">The &man.nvd.4; and &man.nvme.4; drivers are
402 now included in the <filename>GENERIC</filename> kernel
403 configuration by default.</para>
405 <para revision="283505" arch="arm">The &arch.arm; boot loader,
406 <filename>ubldr</filename>, is now relocatable. In addition,
407 <filename>ubldr.bin</filename> is now created during build
408 time, which is a stripped binary with an entry point of
409 <literal>0</literal>, providing the ability to specify the
410 load address by running <literal>go
411 ${loadaddr}</literal> in
412 <literal>u-boot</literal>.</para>
414 <para revision="284094" arch="arm">A new module for creating
415 <filename>rpi.dtb</filename> has been added for the Raspberry
418 <para revision="284094" arch="arm">The
419 <filename>rpi.dtb</filename> module is now installed to
420 <filename class="directory">/boot/dtb/</filename> by
421 default for the Raspberry Pi system.</para>
423 <para revision="284096" arch="arm">A new module for creating
424 the <filename>dtb</filename> module for AM335x systems has
427 <para revision="284522" contrib="sponsor"
428 sponsor="&limelight;">A new kernel configuration option,
429 <literal>EM_MULTIQUEUE</literal>, has been added which enables
430 multi-queue support in the &man.em.4; driver.</para>
433 <para>Multi-queue support in the &man.em.4; driver is not
434 officially supported by &intel;.</para>
438 <sect2 xml:id="kernel-sysctl">
439 <title>System Tuning and Controls</title>
441 <para revision="276986">Throttling via <acronym>ACPI</acronym>
442 and <acronym>P4TCC</acronym> via &man.device.hints.5; have
443 been turned off by default.</para>
445 <para revision="278982" contrib="sponsor" sponsor="&ff;">The
446 &man.hwpmc.4; default and maximum callchain depths have been
447 increased. The default has been increased from 16 to 32, and
448 the maximum increased from 32 to 128.</para>
450 <para revision="281255" contrib="sponsor"
451 sponsor="&ix;, &ff;">The &man.devfs.5; device filesystem has
452 been changed to update timestamps for read/write operations
453 using seconds precision. A new &man.sysctl.8;,
454 <literal>vfs.devfs.dotimes</literal> has been added, which
455 when set to a non-zero value, enables default precision
456 timestamps for these operations.</para>
458 <para revision="280632">The <literal>kern.osrelease</literal>
459 and <literal>kern.osreldate</literal> are now configurable
460 &man.jail.8; parameters.</para>
462 <para revision="284665" contrib="sponsor" sponsor="&ff;">A new
463 &man.sysctl.8;, <literal>kern.racct.enable</literal>, has been
464 added, which when set to a non-zero value allows using
465 &man.rctl.8; with the <literal>GENERIC</literal> kernel.
466 A new kernel configuration option,
467 <literal>RACCT_DISABLED</literal> has also been added.</para>
469 <para revision="284665" contrib="sponsor" sponsor="&ff;">The
470 <literal>GENERIC</literal> kernel configuration now includes
471 <literal>RACCT</literal> and <literal>RCTL</literal> by
475 <para>To enable <literal>RACCT</literal> and
476 <literal>RCTL</literal> on a system using the
477 <literal>GENERIC</literal> kernel configuration, add
478 <literal>kern.racct.enable=1</literal> to
479 &man.loader.conf.5;, and reboot the system.</para>
484 <sect1 xml:id="drivers">
485 <title>Devices and Drivers</title>
487 <para>This section covers changes and additions to devices and
488 device drivers since &release.prev;.</para>
490 <sect2 xml:id="drivers-device">
491 <title>Device Drivers</title>
493 <para revision="282199">The <literal>drm</literal> code has
494 been updated to match &linux; version 3.8.13.</para>
496 <para revision="281708">The &man.psm.4; driver has been updated
497 to include improved support for newer Synaptics ®
498 touchpads and the ClickPad ® mouse on newer
499 Lenovo ™ laptops.</para>
502 <sect2 xml:id="drivers-storage">
503 <title>Storage Drivers</title>
505 <para revision="283990">The &man.mpr.4; driver has been
506 updated to version 9.255.01.00-fbsd.</para>
508 <para revision="284879">The &man.hpt27xx.4; driver has been
509 updated to version 1.2.7.</para>
511 <para revision="284935">The &man.hptnr.4; driver has been
512 updated to version 1.1.4.</para>
515 <sect2 xml:id="drivers-network">
516 <title>Network Drivers</title>
518 <para revision="274486">The &man.pf.4; interface default hash
519 has been changed from <literal>Jenkins</literal> to
520 <literal>Murmur3</literal>, providing a 3-percent performance
521 increase in packets-per-second.</para>
523 <para revision="279157">The &man.ral.4; driver has been updated
524 to support the RT5390 and RT5392 chipsets.</para>
526 <para revision="284066" contrib="sponsor" sponsor="&yandex;">The
527 &man.gre.4; driver has been significantly overhauled, and has
528 been split into two separate modules, &man.gre.4; and
531 <para revision="284365">The &man.vxlan.4; driver has been added,
532 which creates a virtual Layer 2 (Ethernet) network overlaid in
533 a Layer 3 (IP/UDP) network. The &man.vxlan.4; driver is
534 analogous to &man.vlan.4;, but is designed to be better suited
535 for large, multiple-tenant datacenter environments.</para>
537 <para revision="284499">The &man.cdce.4; driver has been updated
538 to include support for the RTL8153 chipset.</para>
540 <para revision="284555" contrib="sponsor"
541 sponsor="&solarflare;">The &man.sfxge.4; driver has been
542 updated to support Solarflare Flareon Ultra 7000-series
547 <sect1 xml:id="hardware">
548 <title>Hardware Support</title>
550 <para>This section covers general hardware support for physical
551 machines, hypervisors, and virtualization environments, as well
552 as hardware changes and updates that do not otherwise fit in
553 other sections of this document.</para>
555 <sect2 xml:id="hardware-support">
556 <title>Hardware Support</title>
558 <para revision="278407">The &man.uart.4; driver has been updated
559 to include support for the <acronym>AMT</acronym> serial
560 interface found on the Lenovo® ThinkPad™ T61.</para>
562 <para revision="279924">The &man.uart.4; driver has been updated
563 to include support for the <acronym>AMT</acronym> serial
564 interface found on the Lenovo® ThinkPad™
567 <para revision="281963">The &man.snd.hda.4; driver has been
568 updated to support the Lenovo® ThinkPad™ X1 20BS
572 <sect2 xml:id="hardware-virtualization">
573 <title>Virtualization Support</title>
575 <para revision="275273">The &man.virtio.console.4; driver has
576 been added, which provides an interface to VirtIO console
577 devices through a &man.tty.4; device.</para>
579 <para revision="276403">The &man.bhyve.8; hypervisor has been
580 updated to support &amd; processors with
581 <acronym>SVM</acronym> and <acronym>AMD-V</acronym> hardware
584 <para revision="280370">The &man.bhyve.8; hypervisor has been
585 updated to support <literal>DSM TRIM</literal> commands for
586 virtual <acronym>AHCI</acronym> disks.</para>
588 <para revision="283280" contrib="sponsor" sponsor="&msostc;">The
589 Hyper-V™ drivers have been updated with several
594 <para>The &man.hv.vmbus.4; driver now has multi-channel
599 <para>The &man.hv.storvsc.4; driver now has scatter/gather
600 support, in addition to performance improvements.</para>
604 <para>The &man.hv.kvp.4; driver has received several bug
609 <para revision="285236" contrib="sponsor" sponsor="&msostc;">The
610 &man.hv.netvsc.4; driver has been updated to support checksum
611 offloading and <acronym>TSO</acronym>.</para>
614 <sect2 xml:id="hardware-arm">
615 <title>ARM Support</title>
617 <para revision="278079">Support to turn off the BeagleBone Black
618 system with the &man.shutdown.8; <literal>-p</literal> flag or
619 by invoking &man.poweroff.8; has been added.</para>
621 <para revision="278599">Support for the Exynos 5420 Octa system
622 has been added.</para>
624 <para revision="278599">The <acronym>SMP</acronym> option has
625 been enabled for all Exynos 5 systems supported by
628 <para revision="278608">The <literal>bcm2835_cpufreq</literal>
629 driver has been added, which supports <acronym>CPU</acronym>
630 frequency and voltage control on the Raspberry Pi
631 <acronym>SOC</acronym>.</para>
633 <para revision="283500">Support for the Toradex Apalis i.MX6
634 development board has been added.</para>
636 <para revision="283500">Audio transmission drivers have been
637 added for Digital Audio Multiplexer
638 (<acronym>AUDMUXM</acronym>), Smart Direct Memory Access
639 Controller (<acronym>SDMA</acronym>), and Syncronous Serial
640 Interface (<acronym>SSI</acronym>).</para>
644 <sect1 xml:id="storage">
645 <title>Storage</title>
647 <para>This section covers changes and additions to file systems
648 and other storage subsystems, both local and networked.</para>
650 <sect2 xml:id="storage-general">
651 <title>General Storage</title>
653 <para revision="279002" contrib="sponsor" sponsor="&ix;">The
654 &man.ctl.4; <acronym>LUN</acronym> mapping has been rewritten,
655 replacing <acronym>iSCSI</acronym>-specific mapping mechanisms
656 with a new mechanism that works for any port.</para>
658 <para revision="279055" contrib="sponsor" sponsor="&ix;">The
659 &man.ctld.8; utility has been updated to allow controlling
660 non-<acronym>iSCSI</acronym> &man.ctl.4; ports.</para>
662 <para revision="283223" contrib="sponsor" sponsor="&ff;">The
663 &man.autofs.5; subsystem has been updated to include a new
664 &man.auto.master.5; map, <literal>-media</literal>, which
665 allows automatically mounting removable media, such as
666 <acronym>CD</acronym> drives or <acronym>USB</acronym> flash
669 <para revision="283242" contrib="sponsor" sponsor="&ff;">The
670 &man.autofs.5; subsystem has been updated to include a new
671 &man.auto.master.5; map, <literal>-noauto</literal>, which
672 handles &man.fstab.5; entries set to
673 <literal>noauto</literal>.</para>
676 <sect2 xml:id="storage-net">
677 <title>Networked Storage</title>
679 <para revision="274939" contrib="sponsor" sponsor="&ix;">The
680 &man.ctld.8; utility has been updated to include support for
681 registering <acronym>iSCSI</acronym> targets and portals on
682 <acronym>iSNS</acronym> servers. This provides a mechanism
683 which allows <acronym>iSCSI</acronym> initiators to find
684 targets and portals without requiring active
687 <para revision="275249" contrib="sponsor" sponsor="&ff;">The
688 &man.mount.nfs.8; utility has been updated to include support
689 for the <literal>timeo</literal>, <literal>actimeo</literal>,
690 <literal>noac</literal>, and <literal>proto</literal>
694 <sect2 xml:id="storage-zfs">
697 <para revision="275490">A new tunable,
698 <literal>vfs.zfs.spa_slop_shift</literal>, has been added,
699 which controls how much space is reserved by default.</para>
701 <para revision="277583">The <literal>arc_meta_limit</literal>
702 statistics are now visible through the
703 <literal>kstat</literal> &man.sysctl.8;. As a result of this
704 change, the <literal>vfs.zfs.arc_meta_used</literal>
705 &man.sysctl.8; has been removed, and replaced with the
706 <literal>kstat.zfs.misc.arcstats.arc_meta_used</literal>
707 &man.sysctl.8;.</para>
710 <sect2 xml:id="storage-geom">
713 <para revision="275891" contrib="sponsor" sponsor="&ix;">The
714 &man.ctl.4; subsystem has been updated, increasing the ports
715 limit from <literal>128</literal> to <literal>256</literal>,
716 and <acronym>LUN</acronym> limit from <literal>256</literal>
717 to <literal>1024</literal>.</para>
719 <para revision="282861">The &man.gpart.8; utility has been
720 updated to include support for the
721 <literal>apple-boot</literal>, <literal>apple-hfs</literal>,
722 and <literal>apple-ufs</literal> <acronym>MBR</acronym>
723 partitioning schemes.</para>
727 <sect1 xml:id="boot">
728 <title>Boot Loader Changes</title>
730 <para>This section covers the boot loader, boot menu, and other
731 boot-related changes.</para>
733 <sect2 xml:id="boot-loader">
734 <title>Boot Loader Changes</title>
736 <para revision="281323">Support for <literal>bzipfs</literal>
737 has been added to the <acronym>EFI</acronym> loader.</para>
739 <para revision="281843">The boot loader has been updated to
740 support entering the <acronym>GELI</acronym> passphrase before
741 loading the kernel. To enable this behavior, add
742 <literal>geom_eli_passphrase_prompt="YES"</literal> to
743 &man.loader.conf.5;.</para>
745 <para revision="283262" contrib="sponsor" sponsor="&ff;">The
746 memory test run at boot time on &os;/&arch.amd64; platforms
747 has been disabled by default.</para>
749 <para revision="283972">A new &man.ttys.5; class,
750 <literal>3wire</literal>, has been added. This is similar to
751 the existing terminal classes, but does not have a defined
754 <para revision="284775" contrib="sponsor" sponsor="&ff;"
755 arch="arm">The &man.ttys.5; file for &os;/&arch.arm; has been
756 updated to enable <filename>ttyu1</filename>,
757 <filename>ttyu2</filename>, and <filename>ttyu3</filename> by
758 default, if the callin port is an active console port.</para>
762 <sect1 xml:id="network">
763 <title>Networking</title>
765 <para>This section describes changes that affect networking in
768 <sect2 xml:id="network-protocols">
769 <title>Network Protocols</title>
771 <para revision="273838" contrib="sponsor"
772 sponsor="&limelight;">Support for <acronym>PLPMTUD</acronym>
773 blackhole detection (<acronym>RFC</acronym> 4821) has been
774 added to the &man.tcp.4; stack, disabled by default. New
775 control tunables have been added:</para>
777 <informaltable frame="none" pgwide="0">
779 <colspec colwidth="1*"/>
780 <colspec colwidth="1*"/>
783 <entry>Tunable</entry>
784 <entry>Description</entry>
790 <entry><literal>net.inet.tcp.pmtud_blackhole_detection</literal></entry>
791 <entry>Enables or disables <acronym>PLPMTUD</acronym>
792 blackhole detection</entry>
796 <entry><literal>net.inet.tcp.pmtud_blackhole_mss</literal></entry>
797 <entry><acronym>MSS</acronym> to try for IPv4</entry>
801 <entry><literal>net.inet.tcp.v6pmtud_blackhole_mss</literal></entry>
802 <entry><acronym>MSS to try for IPv6</acronym></entry>
808 <para>New monitoring &man.sysctl.8;s haven been added:</para>
810 <informaltable frame="none" pgwide="0">
812 <colspec colwidth="1*"/>
813 <colspec colwidth="1*"/>
816 <entry>Tunable</entry>
817 <entry>Description</entry>
823 <entry><literal>net.inet.tcp.pmtud_blackhole_activated</literal></entry>
824 <entry>Number of times the code was activated to attempt
825 downshifting the <acronym>MSS</acronym></entry>
829 <entry><literal>net.inet.tcp.pmtud_blackhole_min_activated</literal></entry>
830 <entry>Number of times the blackhole
831 <acronym>MSS</acronym> was used in an attempt to
836 <entry><literal>net.inet.tcp.pmtud_blackhole_failed</literal></entry>
837 <entry>Number of times that the blackhole failed to
838 connect after downshifting the
839 <acronym>MSS</acronym></entry>
847 <sect1 xml:id="ports">
848 <title>Ports Collection and Package Infrastructure</title>
850 <para>This section covers changes to the &os; Ports
851 Collection, package infrastructure, and package maintenance and
852 installation tools.</para>
854 <sect2 xml:id="ports-versions">
855 <title>Ports and Package Versions</title>
857 <para>The <filename role="package">ports-mgmt/pkg</filename>
858 package has been updated to version 1.5.4 in the
859 <literal>quarterly</literal> branch, and version 1.5.5 in the
860 <literal>head</literal> branch.</para>
863 role="package">x11-servers/xorg-server</filename> package
864 for &os; &release.current; has been updated to version
867 <para>The <filename role="package">x11/xorg</filename> package
868 for &os; &release.current; has been updated to version
871 <para>The <filename role="package">x11/gnome3</filename> package
872 for &os; &release.current; has been updated to version
875 <para>The <filename role="package">x11/kde4</filename> package
876 for &os; &release.current; has been updated to version
881 <sect1 xml:id="releng">
882 <title>Release Engineering and Integration</title>
884 <para>This section convers changes that are specific to the
885 &os; Release Engineering processes.</para>
887 <sect2 xml:id="releng-changes">
888 <title>Integration Changes</title>
890 <para revision="283161" contrib="sponsor" sponsor="&ff;">The
891 Release Engineering build tools have been updated to support
892 building &os;/&arch.arm; images without external utilities for
893 supported boards where a corresponding
894 <literal>u-boot</literal> port exists in the Ports
897 <para revision="283548" contrib="sponsor" sponsor="&ff;">The
898 &os;/&arch.i386; memory stick installation images are now
899 created using the &man.mkimg.1; utility, matching the way
900 the &os;/&arch.amd64; images are created.</para>
902 <para revision="285830" contrib="sponsor" sponsor="&ff;">The
903 default &man.pkg.8; repository set in
904 <filename>/etc/pkg/FreeBSD.conf</filename> now defaults to
905 the <literal>quarterly</literal> package set. To use the
906 <literal>latest</literal> branch (as was the previous
907 default), the comment at the top of
908 <filename>/etc/pkg/FreeBSD.conf</filename> explains how to
909 disable the default repository and specify an alternative