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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;">A new flag, <literal>-R</literal>, has
198 been added to the &man.netstat.8; utility, which is used to
199 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">A new flag, <literal>-c</literal>, has
234 been added to the &man.mkimg.1; utility, which allows
235 specifying the capacity of the target disk image.</para>
237 <para revision="285092">The &man.pw.8; utility has been updated
238 with a new flag, <literal>-R</literal>, that sets the root
239 directory within which the utility will operate.</para>
242 <sect2 xml:id="userland-contrib">
243 <title>Contributed Software</title>
245 <para revision="282746" contrib="sponsor" sponsor="&ff;">The
246 &man.resolvconf.8; utility has been updated to version
249 <para revision="283270">The &man.nc.1; utility has been updated
250 to the OpenBSD 5.7 version.</para>
252 <para revision="284398">Timezone data files have been updated to
253 version 2015e.</para>
255 <para revision="284460">The &man.acpi.4; subsystem has been
256 updated to version 20150515.</para>
258 <para revision="284778">The &man.file.1; utility has been
259 updated to version 5.23.</para>
261 <para revision="285206">The &man.unbound.8; utility has been
262 updated to version 1.5.3.</para>
264 <para revision="285305">The <application>sendmail</application>
265 utility has been updated to version 8.15.2.</para>
267 <para revision="285330"><application>OpenSSL</application> has
268 been updated to version 1.0.1p.</para>
270 <para revision="285612">The <application>ntp</application>
271 suite has been updated to version 4.2.8p3.</para>
273 <para revision="285750" contrib="sponsor" sponsor="&dell;">The
274 &man.ssh.1; utility has been updated to re-implement hostname
275 canonicalization before locating the host in
276 <filename>known_hosts</filename>.</para>
278 <para revision="286084">The &man.tar.1; utility has been updated
279 to fix an issue that would prevent compressing sparse
283 <sect2 xml:id="userland-installer">
284 <title>Installation and Configuration Tools</title>
286 <para revision="285769" contrib="sponsor"
287 sponsor="&scaleengine;">Support for detecting and implementing
288 a workaround for various laptops and motherboards that do not
289 boot properly from <acronym>GPT</acronym>-partitioned disks
290 has been added to &man.bsdinstall.8;. Additionally, the
291 <literal>active</literal> flag will be set on the partition
294 <para revision="285721" contrib="sponsor"
295 sponsor="&scaleengine;">Support for detecting and implementing
296 aligning partitions on 1Mb boundaries has been added to
297 &man.bsdinstall.8;.</para>
299 <para revision="285769" contrib="sponsor"
300 sponsor="&scaleengine;">Support for selecting the partitioning
301 scheme when installing on the <acronym>UFS</acronym>
302 filesystem has been added to &man.bsdinstall.8;.</para>
305 <sect2 xml:id="userland-rc">
306 <title><filename class="directory">/etc/rc.d</filename>
309 <para revision="284009">A new &man.rc.8; script,
310 <filename>growfs</filename>, has been added, which will resize
311 the root filesystem on boot if <filename>/firstboot</filename>
315 <sect2 xml:id="userland-periodic">
316 <title><filename class="directory">/etc/periodic</filename>
319 <para revision="277520" contrib="sponsor" sponsor="&ff;">A new
320 &man.periodic.8; script,
321 <filename>510.status-world-kernel</filename>, has been added,
322 which evaluates the running userland and kernel versions from
323 the &man.uname.1; <literal>-U</literal> and
324 <literal>-K</literal> arguments, and prints an error if the
325 system userland and kernel are not in sync.</para>
328 <sect2 xml:id="userland-libraries">
329 <title>Runtime Libraries and API</title>
331 <para revision="275040">A new file configuration library,
332 &man.figpar.3;, has been added to the base system.</para>
334 <para revision="276686" contrib="sponsor" sponsor="&ff;">The
335 &man.procctl.2; system call has been updated to include
336 a facility for non-&man.init.8; processes to be declared as
337 the reaper of child processes and their decendants.</para>
339 <para revision="280392">The &man.setmode.3; function has been
340 updated to consistently set <literal>errno</literal> on
344 <sect2 xml:id="userland-abi">
345 <title>ABI Compatibility</title>
347 <para revision="275807">The &linux; compatibility version has
348 been updated to <literal>2.6.18</literal>. The
349 <literal>compat.linux.osrelease</literal> &man.sysctl.8; is
350 evaluated when building the <filename
351 role="package">emulators/linux-c6</filename> and related
356 <sect1 xml:id="kernel">
357 <title>Kernel</title>
359 <para>This section covers changes to kernel configurations, system
360 tuning, and system control parameters that are not otherwise
363 <sect2 xml:id="kernel-bugfix">
364 <title>Kernel Bug Fixes</title>
366 <para revision="276068">A kernel panic triggered when destroying
367 a &man.vnet.9; &man.jail.8; configured with &man.gif.4; has
370 <para revision="284018">A kernel panic triggered when destroying
371 a &man.vnet.9; &man.jail.8; configured with &man.gre.4; has
375 <sect2 xml:id="kernel-config">
376 <title>Kernel Configuration</title>
378 <para revision="282065" contrib="sponsor" sponsor="&ff;">The
379 <literal>PAE_TABLES</literal> kernel configuration option has
380 been added for &os;/&arch.i386;, which instructs &man.pmap.9;
381 to use <acronym>PAE</acronym> format for page tables while
382 maintaining a 32-bit physical address size elsewhere in the
383 kernel. The use of this option can enhance application-level
384 security by enabling the creation of <quote>no execute</quote>
385 mappings on modern &arch.i386; processors. Unlike the
386 <literal>PAE</literal> option, <literal>PAE_TABLES</literal>
387 preserves kernel binary interface (<acronym>KBI</acronym>)
388 compatibility with non-<literal>PAE</literal> kernels,
389 allowing non-<literal>PAE</literal> kernel modules and drivers
390 to work with a <literal>PAE_TABLES</literal>-enabled kernel.
391 Additionally, system limits are tuned for 4GB maximum
392 <acronym>RAM</acronym>, avoiding kernel virtual address space
393 (<acronym>KVA</acronym>) exhaustion.</para>
395 <para revision="282826">The <literal>SIFTR</literal> kernel
396 configuration has been added, allowing building &man.siftr.4;
397 statically into the kernel.</para>
399 <para revision="283076" contrib="sponsor" sponsor="&intelcorp;"
400 arch="amd64,i386">The &man.nvd.4; and &man.nvme.4; drivers are
401 now included in the <filename>GENERIC</filename> kernel
402 configuration by default.</para>
404 <para revision="283505" arch="arm">The &arch.arm; boot loader,
405 <filename>ubldr</filename>, is now relocatable. In addition,
406 <filename>ubldr.bin</filename> is now created during build
407 time, which is a stripped binary with an entry point of
408 <literal>0</literal>, providing the ability to specify the
409 load address by running <literal>go
410 ${loadaddr}</literal> in
411 <literal>u-boot</literal>.</para>
413 <para revision="284094" arch="arm">A new module for creating
414 <filename>rpi.dtb</filename> has been added for the Raspberry
417 <para revision="284094" arch="arm">The
418 <filename>rpi.dtb</filename> module is now installed to
419 <filename class="directory">/boot/dtb/</filename> by
420 default for the Raspberry Pi system.</para>
422 <para revision="284096" arch="arm">A new module for creating
423 the <filename>dtb</filename> module for AM335x systems has
426 <para revision="284522" contrib="sponsor"
427 sponsor="&limelight;">A new kernel configuration option,
428 <literal>EM_MULTIQUEUE</literal>, has been added which enables
429 multi-queue support in the &man.em.4; driver.</para>
432 <para>Multi-queue support in the &man.em.4; driver is not
433 officially supported by &intel;.</para>
437 <sect2 xml:id="kernel-sysctl">
438 <title>System Tuning and Controls</title>
440 <para revision="276986">Throttling via <acronym>ACPI</acronym>
441 and <acronym>P4TCC</acronym> via &man.device.hints.5; have
442 been turned off by default.</para>
444 <para revision="278982" contrib="sponsor" sponsor="&ff;">The
445 &man.hwpmc.4; default and maximum callchain depths have been
446 increased. The default has been increased from 16 to 32, and
447 the maximum increased from 32 to 128.</para>
449 <para revision="281255" contrib="sponsor"
450 sponsor="&ix;, &ff;">The &man.devfs.5; device filesystem has
451 been changed to update timestamps for read/write operations
452 using seconds precision. A new &man.sysctl.8;,
453 <literal>vfs.devfs.dotimes</literal> has been added, which
454 when set to a non-zero value, enables default precision
455 timestamps for these operations.</para>
457 <para revision="280632">The <literal>kern.osrelease</literal>
458 and <literal>kern.osreldate</literal> are now configurable
459 &man.jail.8; parameters.</para>
461 <para revision="284665" contrib="sponsor" sponsor="&ff;">A new
462 &man.sysctl.8;, <literal>kern.racct.enable</literal>, has been
463 added, which when set to a non-zero value allows using
464 &man.rctl.8; with the <literal>GENERIC</literal> kernel.
465 A new kernel configuration option,
466 <literal>RACCT_DISABLED</literal> has also been added.</para>
468 <para revision="284665" contrib="sponsor" sponsor="&ff;">The
469 <literal>GENERIC</literal> kernel configuration now includes
470 <literal>RACCT</literal> and <literal>RCTL</literal> by
474 <para>To enable <literal>RACCT</literal> and
475 <literal>RCTL</literal> on a system using the
476 <literal>GENERIC</literal> kernel configuration, add
477 <literal>kern.racct.enable=1</literal> to
478 &man.loader.conf.5;, and reboot the system.</para>
483 <sect1 xml:id="drivers">
484 <title>Devices and Drivers</title>
486 <para>This section covers changes and additions to devices and
487 device drivers since &release.prev;.</para>
489 <sect2 xml:id="drivers-device">
490 <title>Device Drivers</title>
492 <para revision="282199">The <literal>drm</literal> code has
493 been updated to match &linux; version 3.8.13.</para>
495 <para revision="281708">The &man.psm.4; driver has been updated
496 to include improved support for newer Synaptics ®
497 touchpads and the ClickPad ® mouse on newer
498 Lenovo ™ laptops.</para>
501 <sect2 xml:id="drivers-storage">
502 <title>Storage Drivers</title>
504 <para revision="283990">The &man.mpr.4; driver has been
505 updated to version 9.255.01.00-fbsd.</para>
507 <para revision="284879">The &man.hpt27xx.4; driver has been
508 updated to version 1.2.7.</para>
510 <para revision="284935">The &man.hptnr.4; driver has been
511 updated to version 1.1.4.</para>
514 <sect2 xml:id="drivers-network">
515 <title>Network Drivers</title>
517 <para revision="274486">The &man.pf.4; interface default hash
518 has been changed from <literal>Jenkins</literal> to
519 <literal>Murmur3</literal>, providing a 3-percent performance
520 increase in packets-per-second.</para>
522 <para revision="279157">The &man.ral.4; driver has been updated
523 to support the RT5390 and RT5392 chipsets.</para>
525 <para revision="284066" contrib="sponsor" sponsor="&yandex;">The
526 &man.gre.4; driver has been significantly overhauled, and has
527 been split into two separate modules, &man.gre.4; and
530 <para revision="284365">The &man.vxlan.4; driver has been added,
531 which creates a virtual Layer 2 (Ethernet) network overlaid in
532 a Layer 3 (IP/UDP) network. The &man.vxlan.4; driver is
533 analogous to &man.vlan.4;, but is designed to be better suited
534 for large, multiple-tenant datacenter environments.</para>
536 <para revision="284499">The &man.cdce.4; driver has been updated
537 to include support for the RTL8153 chipset.</para>
539 <para revision="284555" contrib="sponsor"
540 sponsor="&solarflare;">The &man.sfxge.4; driver has been
541 updated to support Solarflare Flareon Ultra 7000-series
546 <sect1 xml:id="hardware">
547 <title>Hardware Support</title>
549 <para>This section covers general hardware support for physical
550 machines, hypervisors, and virtualization environments, as well
551 as hardware changes and updates that do not otherwise fit in
552 other sections of this document.</para>
554 <sect2 xml:id="hardware-support">
555 <title>Hardware Support</title>
557 <para revision="278407">The &man.uart.4; driver has been updated
558 to include support for the <acronym>AMT</acronym> serial
559 interface found on the Lenovo® ThinkPad™ T61.</para>
561 <para revision="279924">The &man.uart.4; driver has been updated
562 to include support for the <acronym>AMT</acronym> serial
563 interface found on the Lenovo® ThinkPad™
566 <para revision="281963">The &man.snd.hda.4; driver has been
567 updated to support the Lenovo® ThinkPad™ X1 20BS
571 <sect2 xml:id="hardware-virtualization">
572 <title>Virtualization Support</title>
574 <para revision="275273">The &man.virtio.console.4; driver has
575 been added, which provides an interface to VirtIO console
576 devices through a &man.tty.4; device.</para>
578 <para revision="276403">The &man.bhyve.8; hypervisor has been
579 updated to support &amd; processors with
580 <acronym>SVM</acronym> and <acronym>AMD-V</acronym> hardware
583 <para revision="280370">The &man.bhyve.8; hypervisor has been
584 updated to support <literal>DSM TRIM</literal> commands for
585 virtual <acronym>AHCI</acronym> disks.</para>
587 <para revision="283280" contrib="sponsor" sponsor="&msostc;">The
588 Hyper-V™ drivers have been updated with several
593 <para>The &man.hv.vmbus.4; driver now has multi-channel
598 <para>The &man.hv.storvsc.4; driver now has scatter/gather
599 support, in addition to performance improvements.</para>
603 <para>The &man.hv.kvp.4; driver has received several bug
608 <para revision="285236" contrib="sponsor" sponsor="&msostc;">The
609 &man.hv.netvsc.4; driver has been updated to support checksum
610 offloading and <acronym>TSO</acronym>.</para>
613 <sect2 xml:id="hardware-arm">
614 <title>ARM Support</title>
616 <para revision="278079" arch="arm">Support to turn off the
617 BeagleBone Black system with the &man.shutdown.8;
618 <literal>-p</literal> flag or by invoking &man.poweroff.8; has
621 <para revision="278599" arch="arm">Support for the Exynos 5420
622 Octa system has been added.</para>
624 <para revision="278599" arch="arm">The <acronym>SMP</acronym>
625 option has 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" arch="arm">Support for the Toradex
634 Apalis i.MX6 development board has been added.</para>
636 <para revision="283500" arch="arm">Audio transmission drivers
637 have been 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;">Support
688 for the <literal>timeo</literal>, <literal>actimeo</literal>,
689 <literal>noac</literal>, and <literal>proto</literal> options
690 have been added to &man.mount.nfs.8;.</para>
693 <sect2 xml:id="storage-zfs">
696 <para revision="275490">A new tunable,
697 <literal>vfs.zfs.spa_slop_shift</literal>, has been added,
698 which controls how much space is reserved by default.</para>
700 <para revision="277583">The <literal>arc_meta_limit</literal>
701 statistics are now visible through the
702 <literal>kstat</literal> &man.sysctl.8;. As a result of this
703 change, the <literal>vfs.zfs.arc_meta_used</literal>
704 &man.sysctl.8; has been removed, and replaced with the
705 <literal>kstat.zfs.misc.arcstats.arc_meta_used</literal>
706 &man.sysctl.8;.</para>
709 <sect2 xml:id="storage-geom">
710 <title>&man.geom.4;</title>
712 <para revision="275891" contrib="sponsor" sponsor="&ix;">The
713 &man.ctl.4; subsystem has been updated, increasing the ports
714 limit from <literal>128</literal> to <literal>256</literal>,
715 and <acronym>LUN</acronym> limit from <literal>256</literal>
716 to <literal>1024</literal>.</para>
718 <para revision="282861">Support for the
719 <literal>apple-boot</literal>, <literal>apple-hfs</literal>,
720 and <literal>apple-ufs</literal> <acronym>MBR</acronym>
721 partitioning schemes have been added to &man.gpart.8;.</para>
725 <sect1 xml:id="boot">
726 <title>Boot Loader Changes</title>
728 <para>This section covers the boot loader, boot menu, and other
729 boot-related changes.</para>
731 <sect2 xml:id="boot-loader">
732 <title>Boot Loader Changes</title>
734 <para revision="281323">Support for <literal>bzipfs</literal>
735 has been added to the <acronym>EFI</acronym> loader.</para>
737 <para revision="281843">The boot loader has been updated to
738 support entering the <acronym>GELI</acronym> passphrase before
739 loading the kernel. To enable this behavior, add
740 <literal>geom_eli_passphrase_prompt="YES"</literal> to
741 &man.loader.conf.5;.</para>
743 <para revision="283262" contrib="sponsor" sponsor="&ff;">The
744 memory test run at boot time on &os;/&arch.amd64; platforms
745 has been disabled by default.</para>
747 <para revision="283972">A new &man.ttys.5; class,
748 <literal>3wire</literal>, has been added. This is similar to
749 the existing terminal classes, but does not have a defined
752 <para revision="284775" contrib="sponsor" sponsor="&ff;"
753 arch="arm">The &man.ttys.5; file for &os;/&arch.arm; has been
754 updated to enable <filename>ttyu1</filename>,
755 <filename>ttyu2</filename>, and <filename>ttyu3</filename> by
756 default, if the callin port is an active console port.</para>
759 <sect2 xml:id="boot-menu">
760 <title>Boot Menu Changes</title>
766 <sect1 xml:id="network">
767 <title>Networking</title>
769 <para>This section describes changes that affect networking in
772 <sect2 xml:id="network-protocols">
773 <title>Network Procols</title>
775 <para revision="273838" contrib="sponsor"
776 sponsor="&limelight;">Support for <acronym>PLPMTUD</acronym>
777 blackhole detection (<acronym>RFC</acronym> 4821) has been
778 added to the &man.tcp.4; stack, disabled by default. New
779 control tunables have been added:</para>
781 <informaltable frame="none" pgwide="0">
783 <colspec colwidth="1*"/>
784 <colspec colwidth="1*"/>
787 <entry>Tunable</entry>
788 <entry>Description</entry>
794 <entry><literal>net.inet.tcp.pmtud_blackhole_detection</literal></entry>
795 <entry>Enables or disables <acronym>PLPMTUD</acronym>
796 blackhole detection</entry>
800 <entry><literal>net.inet.tcp.pmtud_blackhole_mss</literal></entry>
801 <entry><acronym>MSS</acronym> to try for IPv4</entry>
805 <entry><literal>net.inet.tcp.v6pmtud_blackhole_mss</literal></entry>
806 <entry><acronym>MSS to try for IPv6</acronym></entry>
812 <para>New monitoring &man.sysctl.8;s haven been added:</para>
814 <informaltable frame="none" pgwide="0">
816 <colspec colwidth="1*"/>
817 <colspec colwidth="1*"/>
820 <entry>Tunable</entry>
821 <entry>Description</entry>
827 <entry><literal>net.inet.tcp.pmtud_blackhole_activated</literal></entry>
828 <entry>Number of times the code was activated to attempt
829 downshifting the <acronym>MSS</acronym></entry>
833 <entry><literal>net.inet.tcp.pmtud_blackhole_min_activated</literal></entry>
834 <entry>Number of times the blackhole
835 <acronym>MSS</acronym> was used in an attempt to
840 <entry><literal>net.inet.tcp.pmtud_blackhole_failed</literal></entry>
841 <entry>Number of times that the blackhole failed to
842 connect after downshifting the
843 <acronym>MSS</acronym></entry>
851 <sect1 xml:id="ports">
852 <title>Ports Collection and Package Infrastructure</title>
854 <para>This section covers changes to the &os; Ports
855 Collection, package infrastructure, and package maintenance and
856 installation tools.</para>
858 <sect2 xml:id="ports-versions">
859 <title>Ports and Package Versions</title>
861 <para>The <filename role="package">ports-mgmt/pkg</filename>
862 package has been updated to version 1.5.4 in the
863 <literal>quarterly</literal> branch, and version 1.5.5 in the
864 <literal>head</literal> branch.</para>
867 role="package">x11-servers/xorg-server</filename> package
868 for &os; &release.current; has been updated to version
871 <para>The <filename role="package">x11/xorg</filename> package
872 for &os; &release.current; has been updated to version
875 <para>The <filename role="package">x11/gnome3</filename> package
876 for &os; &release.current; has been updated to version
879 <para>The <filename role="package">x11/kde4</filename> package
880 for &os; &release.current; has been updated to version
885 <sect1 xml:id="releng">
886 <title>Release Engineering and Integration</title>
888 <para>This section convers changes that are specific to the
889 &os; Release Engineering processes.</para>
891 <sect2 xml:id="releng-changes">
892 <title>Integration Changes</title>
894 <para revision="283161" contrib="sponsor" sponsor="&ff;">The
895 Release Engineering build tools have been updated to support
896 building &os;/&arch.arm; images without external utilities for
897 supported boards where a corresponding
898 <literal>u-boot</literal> port exists in the Ports
901 <para revision="283548" contrib="sponsor" sponsor="&ff;">The
902 &os;/&arch.i386; memory stick installation images are now
903 created using the &man.mkimg.1; utility, matching the way
904 the &os;/&arch.amd64; images are created.</para>
906 <para revision="285830" contrib="sponsor" sponsor="&ff;">The
907 default &man.pkg.8; repository set in
908 <filename>/etc/pkg/FreeBSD.conf</filename> now defaults to
909 the <literal>quarterly</literal> package set. To use the
910 <literal>latest</literal> branch (as was the previous
911 default), the comment at the top of
912 <filename>/etc/pkg/FreeBSD.conf</filename> explains how to
913 disable the default repository and specify an alternative