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12 xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0">
15 <title>&os; &release.current; Release Notes</title>
18 <orgname>The &os; Project</orgname>
21 <pubdate>$FreeBSD$</pubdate>
39 <holder role="mailto:doc@FreeBSD.org">The &os; Documentation
43 <legalnotice xml:id="trademarks" role="trademarks">
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
63 <sect1 xml:id="intro">
64 <title>Introduction</title>
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>
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
77 xlink:href="&release.url;">&release.url;</uri>.</para>
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
85 xlink:href="&release.url;">&release.url;</uri>.</para>
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
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>
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>
108 <title>What's New</title>
110 <para>This section describes the most user-visible new or changed
111 features in &os; since &release.prev;.</para>
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
123 <sect2 xml:id="security">
124 <title>Security Advisories</title>
130 <sect2 xml:id="kernel">
131 <title>Kernel Changes</title>
133 <para revision="260338">The
134 <literal>vfs.zfs.zio.use_uma</literal> &man.sysctl.8; has been
135 re-enabled. On multi-CPU machines with enough RAM, this can
136 easily double &man.zfs.8; performance or reduce CPU usage in
137 half. It was originally disabled due to memory and
138 <acronym>KVA</acronym> exhaustion problem reports, which
139 should be resolved due to several change in the VM
142 <para revision="260385" contrib="sponsor" sponsor="&ix;">The
143 &man.geom.4; RAID driver has been
144 updated to support unmapped I/O.</para>
146 <para revision="260431">A new &man.sysctl.8;,
147 <literal>kern.panic_reboot_wait_time</literal>, has been
148 added, which allows controlling how long the system will wait
149 after &man.panic.9; before rebooting.</para>
151 <para revision="260857">The &man.virtio_blk.4; driver has been
152 updated to support unmapped I/O.</para>
154 <para revision="260858">The &man.virtio_scsi.4; driver has been
155 updated to support unmapped I/O.</para>
157 <para revision="262861">The &man.vt.4; driver has been merged
158 from &os;-CURRENT. To enable &man.vt.4;, enter
159 <literal>set kern.vty=vt</literal> at the &man.loader.8;
160 prompt during boot, or add <literal>kern.vty=vt</literal> to
161 &man.loader.conf.5; and reboot the system.</para>
163 <para revision="262967">Support for MegaRAID Fury cards has been
164 added to the &man.mfi.4; driver.</para>
166 <para revision="263024">The &man.aacraid.4; driver has been
167 updated to version 3.2.5.</para>
169 <para revision="263122">Support for &man.hwpmc.4; has been added
170 for &powerpc; 970 class processors.</para>
172 <para revision="263197">Support for ADT7460 and ADT7467 fan
173 controllers found in newer PowerBooks™ and
174 iBooks™ has been added to the &man.iicbus.4;
177 <para revision="263256">A panic triggered by removing
178 a &man.urtwn.4; device has been fixed.</para>
180 <para revision="263799">A potential deadlock in the &man.usb.4;
181 stack triggered by detaching USB devices that create character
182 devices has been fixed.</para>
184 <para revision="263869">Support for &amd; Family 16h sensor
185 devices has been added to &man.amdtemp.4;.</para>
187 <para revision="264522">Support for LUN-based CD changers has
188 been removed from the &man.cd.4; driver.</para>
190 <para revision="264734">Support for 9th generation HP host bus
191 adapter cards has been added to &man.ciss.4;.</para>
193 <para revision="265388" contrib="sponsor" sponsor="&lsi;">The
194 &man.mpr.4; device has been added,
195 providing support for LSI Fusion-MPT 3 12Gb SCSI/SATA
198 <para revision="265536">The <literal>GEOM_VINUM</literal> option
199 is now able to be built both directly into the kernel or as
200 a &man.kldload.8; loadable module.</para>
202 <para revision="265610">The &man.uslcom.4; driver has been
203 updated to support 26 new devices.</para>
205 <para revision="265922" contrib="sponsor" sponsor="&lsi;">The
206 &man.mrsas.4; driver has been added,
207 providing support for LSI MegaRAID SAS controllers. The
208 &man.mfi.4; driver will attach to the controller, by default.
209 To enable &man.mrsas.4; add
210 <literal>hw.mfi.mrsas_enable=1</literal> to
211 <filename>/boot/loader.conf</filename>, which turns off
212 &man.mfi.4; device probing.</para>
215 <para>At this time, the &man.mfiutil.8; utility and
217 <application>MegaCLI</application> and
218 <application>StorCli</application> do not work with
219 &man.mrsas.4;.</para>
222 <para revision="266165">A kernel bug that inhibited proper
223 functionality of the <literal>dev.cpu.0.freq</literal>
224 &man.sysctl.8; on &intel; processors with Turbo
225 Boost™ enabled has been fixed.</para>
227 <para revision="266220">The &man.geom.uncompress.4; module is
228 built by default which, similar to &man.geom.uzip.4;,
229 provides support for compressed, read-only disk
232 <para revision="266436">The &man.uart.4; driver has been
233 updated to include support for the &intel; Lynx Point
234 KT <acronym>AMT</acronym> serial port.</para>
236 <para revision="266718">A bug that would prevent
237 a &man.jail.8; from setting the correct IPv4 source address
238 with some operations that required
239 <literal>security.jail.allow_raw_sockets</literal> has been
242 <para revision="266911">The &man.hwpmc.4; driver has been
243 updated to support core events from the Atom™
244 Silvermont architecture.</para>
246 <sect3 xml:id="kernel-virtualization">
247 <title>Virtualization Support</title>
249 <para revision="259450">Support for µsoft; Hyper-V
250 has been added to &os;/i386 as loadable modules, however
251 not available in the <filename>GENERIC</filename> kernel
252 configuration.</para>
254 <para revision="261090">The &man.bhyve.4; hypervisor now
255 supports soft power-off functionality via the ACPI S5
259 <sect3 xml:id="kernel-arm">
260 <title>ARM Support</title>
262 <para revision="259355">The <filename>WANDBOARD</filename>
263 kernel configuration file has been added.</para>
265 <para revision="265067">Boot devices may now be specified by
266 setting a u-boot environment variable. If a boot device is
267 not specified, the probe mechanism will be used. To specify
268 the boot device, set the
269 <literal>loaderdev=<replaceable>device</replaceable></literal>
270 u-boot environment variable.</para>
272 <para revision="266000">The <literal>nexus(4)</literal> driver
273 has been updated to include <quote>Flattened Device
274 Tree</quote> support, replacing the &man.fdtbus.4; driver
275 in most cases.</para>
277 <para revision="266105">The &man.gpioiic.4; and
278 &man.gpioled.4; have been merged from &os;-CURRENT.</para>
280 <para revision="266379">The <literal>ZEDBOARD</literal> kernel
281 configuration file has been updated to include
282 <acronym>SMP</acronym> support.</para>
285 <sect3 xml:id="boot">
286 <title>Boot Loader Changes</title>
288 <para revision="262701">A kernel selection menu has been added
289 to &man.loader.8;. If the <quote>beastie menu</quote> is
290 enabled, the kernel to boot may be selected from the kernel
291 selection menu. Additional kernels may be listed in
292 &man.loader.conf.5; as a comma- or space-separated list. By
293 default, <literal>kernel</literal> and
294 <literal>kernel.old</literal> are listed.</para>
297 <sect3 xml:id="proc">
298 <title>Hardware Support</title>
303 <title>Multimedia Support</title>
309 <sect4 xml:id="net-if">
310 <title>Network Interface Support</title>
312 <para revision="259453">Support for Ralink RT5370 and
313 RT5372 chipsets has been added to the &man.run.4;
316 <para revision="260120">Firmware for the &man.run.4; driver
317 has been updated to version 0.33.</para>
319 <para revision="261868">Support for the Ralink RT3593
320 chipset has been added to the &man.run.4; driver.</para>
322 <para revision="261972">The &man.nve.4; driver is now
323 deprecated, and the &man.nfe.4; driver should be used
326 <para revision="262137">Support for the &man.axge.4; driver
327 has been added. This driver supports the ASIX AX88178A
328 and AX88179 USB ethernet adapters. The AX88178A supports
329 USB 2.0, and the AX88179 supports USB 2.0 and 3.0.</para>
331 <para revision="262363">The &man.urndis.4; driver has been
332 imported from OpenBSD.</para>
334 <para revision="264866">Support for multiple
335 transmitter/receiver queues has been added to the
336 &man.vmx.4; driver.</para>
339 <para>The &os; guest operating system must have
340 <acronym>MSIX</acronym> enabled as a prerequisite for
341 multiple queues.</para>
344 <para revision="265345">Support for the ASUS USB-N10 Nano
345 wireless card has been added to the &man.urtwn.4;
348 <para revision="266212">Transmission checksum offloading has
349 been disabled for the RTL8168C and RTL8168CP chipsets in
350 the &man.re.4; driver for TCP and UDP frames. This is
351 due to a report of UDP datagrams with IP options
352 generating corrupt frames.</para>
354 <para revision="266578">Preliminary support has been added
355 to the &man.urtwn.4; driver for the Realtek RTL8188EUS and
356 RTL8188ETV chipsets.</para>
360 <sect3 xml:id="net-proto">
361 <title>Network Protocols</title>
363 <para revision="265946">Support for the UDP-Lite protocol
364 (RFC 3828) has been added to the IPv4 and IPv6
368 <sect3 xml:id="disks">
369 <title>Disks and Storage</title>
371 <para revision="259328" contrib="sponsor" sponsor="&ff;">The
372 &man.geom.8; <literal>label</literal> class is now aware of
373 resized partitions. This corrects an issue where
374 <command>geom resize</command> would resize the partition,
375 but the label provider in <filename
376 class="directory">/dev/gptid/</filename> would not be
379 <para revision="260502">The &man.gmirror.8;
380 utility now has a <literal>resize</literal> command, making
381 it easier to resize the size of a mirror when all of its
382 components have been replaced.</para>
384 <para revision="265912">The &man.geom.8;
385 <literal>GEOM_PART</literal> class has been updated to
386 support automatic partition resizing. Changes to the
387 partition size are not saved to disk until
388 <command>gpart commit</command> is run, and prior to saving,
389 can be reverted with <command>gpart undo</command>.</para>
391 <para revision="268091">Support for the
392 <literal>disklabel64</literal> partitioning scheme has been
393 added to &man.gpart.8;.</para>
395 <para revision="266594">The <literal>radeonkms(4)</literal>
396 driver has been updated to include 32-bit &man.ioctl.2;
397 support, allowing 32-bit applications to run on a 64-bit
402 <title>File Systems</title>
404 <para revision="260178" contrib="vendor"
405 vendor="&netflix;">A new flag, <literal>-R</literal>,
406 has been added to the &man.fsck.ffs.8; utility. When used,
407 &man.fsck.ffs.8; will restart itself when too many critical
408 errors have been detected.</para>
410 <para revision="263407">The &man.zfs.8; filesystem has been
411 updated to implement <quote>bookmarks</quote>. See
412 &man.zfs.8; for further details.</para>
414 <para revision="266122">The &man.zfs.8; filesystem has been
415 updated to allow tuning the minimum <quote>ashift</quote>
416 value when creating new top-level virtual devices (vdevs).
417 To set the minimum ashift value, for example when creating
418 a &man.zpool.8; on <quote>Advanced Format</quote> drives,
419 set the <literal>vfs.zfs.min_auto_ashift</literal>
420 &man.sysctl.8; accordingly.</para>
422 <para revision="266612">The <literal>libzfs</literal> thread
423 pool <acronym>API</acronym> has been imported from
424 OpenSolaris, and adapted for &os;. This change allows
425 parallel disk scanning, which can reduce &man.zpool.8;
426 overall import time in some workloads.</para>
430 <sect2 xml:id="userland">
431 <title>Userland Changes</title>
433 <para revision="260177" contrib="sponsor"
434 sponsor="&netflix;">A new flag is added to &man.camcontrol.8;,
435 <literal>-b</literal>, which outputs the existing buses and
436 their parents.</para>
438 <para revision="262075">The &man.newsyslog.8; utility has been
439 updated to rotate files based on the actual file size instead
440 of the blocks on disk. This matches the behavior documented
441 in &man.newsyslog.conf.5;.</para>
443 <para revision="262384">The location of the &man.rctl.8;
444 configuration file can now be overridden in &man.rc.conf.5;.
445 To use a non-default location, set
446 <literal>rctl_rules</literal> in &man.rc.conf.5; to the
447 location of the file.</para>
449 <para revision="262855">The <application>ATF</application> test
450 suite has been updated to version 0.20.</para>
452 <para revision="263019">The <literal>libucl</literal> library
453 (Unified Configuration Library) has been merged from
456 <para revision="263020">The &man.pkg.7; bootstrapping utility
457 has been synced with the version in &os;-CURRENT.</para>
459 <para revision="263403">The &man.zfs.8; userland utility has
460 been updated to include aliases for
461 <command>snapshot</command>, which allows use of <command>zfs
462 list -t snap</command> and <command>zfs
463 snap</command>.</para>
465 <para revision="263405">The &man.zfs.8; userland utility has
466 been updated to include a new flag to <command>zfs
467 list</command>, <literal>-p</literal>, which when specified,
468 prints the output in a parsable format.</para>
470 <para revision="263783">The Blowfish password format
471 implementation updated. Support for $2b$ has
472 been added, allowing use of passwords greater than 256
473 characters long.</para>
475 <para revision="264497">The &man.iconv.3; library has been
476 updated to match NetBSD, providing several bug fixes.</para>
478 <para revision="265265">The &man.date.1; utility has been
479 updated to include a new flag, <literal>-R</literal>, which
480 prints the date and time output as specified in RFC
483 <para revision="265533">The &man.bc.1; utility has been updated
484 to version 1.1, in sync with the version in OpenBSD.</para>
486 <para revision="265604" contrib="vendor"
487 vendor="&netflix;">The &man.pmcstat.8; utility has been
488 updated to include a new flag, <literal>-a</literal>, which
489 when specified, produces a full stack track on the sampled
492 <para revision="265701">The &man.netstat.8; and &man.route.8;
493 utilities have been updated to include a shorthand equivalent
494 to the <literal>-f inet</literal> and <literal>-f
495 inet6</literal> address specifiers, <literal>-4</literal>
496 and <literal>-6</literal>, respectively.</para>
498 <para revision="265879">The &man.crypt.3; library now defaults
499 to SHA512 for password hashing.</para>
501 <para revision="266014">The &man.gvinum.8; utility has been
502 updated to allow forceful configuration reset with the
503 <literal>-f</literal> flag. Additionally, a bug that would
504 prevent <literal>-f</literal> from properly creating
505 a &man.gvinum.8; configuration has been fixed.</para>
507 <para revision="266029">The &man.login.conf.5; file now takes
508 precedence over the shell-specific environment files. In
509 particular, the <literal>PATH</literal>,
510 <literal>BLOCKSIZE</literal> variables are commented from
511 <filename>/usr/share/skel/dot.profile</filename>, and the
512 <literal>path</literal>, <literal>BLOCKSIZE</literal>, and
513 <literal>umask</literal> variables have been commented from
514 <filename>/usr/share/skel/dot.cshrc</filename>.</para>
516 <para revision="266272">The &man.binmiscctl.8; userland utility
517 and related image activator features have been merged from
520 <para revision="266279">The &man.ps.1; utility has been
521 updated to include the <literal>-J</literal> flag, used to
522 filter output by matching &man.jail.8; IDs and names.
523 Additionally, argument <literal>0</literal> can be used to
524 <literal>-J</literal> to only list processes running on the
527 <para revision="266280">The &man.top.1; utility has been updated
528 to filter by &man.jail.8; ID or name, in followup to the
529 &man.ps.1; change in <literal>r265229</literal>.</para>
531 <para revision="266610">The &man.gstat.8; utility has been
532 updated to include a new flag, <literal>-o</literal>. When
533 set, &man.gstat.8; will display statistics for operations
534 such as <literal>BIO_FLUSH</literal>.</para>
536 <para revision="266632">The &man.fetch.3; library has been
537 updated to look for root <acronym>SSL</acronym> certificates
538 in <filename class="directory">/usr/local/etc/ssl/</filename>
540 class="directory">/etc/ssl/</filename>.</para>
542 <para revision="266715">The &man.clang.1;/llvm suite has been
543 updated to version 3.4.1.</para>
545 <para revision="266816">The Blowfish password format
546 has been changed to $2b$ by default.</para>
548 <para revision="266888">The amount of data collected for
549 &man.hwpmc.4; has been updated to work with modern processors
550 and larger amounts of available memory.</para>
552 <para revision="266890">The &man.pmcstat.8; utility has been
553 updated to include a new flag, <literal>-l</literal>, which
554 ends event collection after the specified number of
557 <para revision="266953">The &man.mergemaster.8; utility has
558 been updated to avoid printing
559 <quote><filename>/var/tmp/temproot</filename>
560 disappeared</quote> if there is nothing to compare.</para>
562 <para revision="267056">The &os; installer, &man.bsdinstall.8;,
563 has been updated to include optional
564 &man.geli.8;-encrypted or &man.gmirror.8;-mirrored swap
565 devices when installing onto a full &man.zfs.8; filesystem.
566 Additionally, the parent &man.zfs.8; dataset is now configured
567 with <literal>lz4</literal> compression enabled.</para>
569 <para revision="267113">The default &man.newsyslog.conf.5; now
570 includes files in the
571 <filename>/etc/newsyslog.conf.d/</filename> and
572 <filename>/usr/local/etc/newsyslog.conf.d/</filename>
573 directories by default for &man.newsyslog.8;.</para>
575 <para revision="267236">A new flag, <quote>onifconsole</quote>
576 has been added to <filename>/etc/ttys</filename>. This allows
577 the system to provide a login prompt via serial console if the
578 device is an active kernel console, otherwise it is equivalent
579 to <literal>off</literal>.</para>
581 <para revision="268161">The &man.mkimg.1; utility has been
582 merged from &os;-CURRENT.</para>
584 <sect3 xml:id="rc-scripts">
585 <title><filename>/etc/rc.d</filename> Scripts</title>
587 <para revision="264438">The <filename>network.subr</filename>
588 &man.rc.8; script has been updated to loosen the requirement
589 of listing network aliases in numeric order. Previously,
591 <literal>_alias<replaceable>2</replaceable></literal>
592 would not be created if
593 <literal>_alias<replaceable>1</replaceable></literal> was
598 <sect2 xml:id="contrib">
599 <title>Contributed Software</title>
601 <para revision="263285">The &man.xz.1; utility has been updated
602 to a post-5.0.5 snapshot.</para>
604 <para revision="263369" contrib="sponsor"
605 sponsor="&darpa_afrl;">The &man.lldb.1; debugging library has
606 been updated to the r196322 snapshot.</para>
608 <para revision="264377"><application>OpenSSH</application> has
609 been updated to version 6.6p1.</para>
611 <para revision="264911">The &man.nc.1; utility has been updated
612 to match the version in OpenBSD 5.5.</para>
614 <para revision="265983">The timezone database has been updated
615 to version tzdata2014c.</para>
617 <para revision="266692"><application>Sendmail</application>
618 has been updated to 8.14.9.</para>
620 <para revision="267258"><application>OpenSSL</application> has
621 been updated to version 1.0.1h.</para>
624 <sect2 xml:id="ports">
625 <title>Ports/Packages Collection Infrastructure</title>
631 <sect2 xml:id="releng">
632 <title>Release Engineering and Integration</title>
634 <para revision="263028">The &man.services.mkdb.8; utility has
635 been updated to include endianness awareness, allowing the
636 <filename>services.db</filename> database to be created as
637 part of the release build, regardless of native- or
638 cross-built releases.</para>
642 <title>Documentation</title>
649 <sect1 xml:id="upgrade">
650 <title>Upgrading from Previous Releases of &os;</title>
652 <para arch="amd64,i386">Binary upgrades between RELEASE versions
653 (and snapshots of the various security branches) are supported
654 using the &man.freebsd-update.8; utility. The binary upgrade
655 procedure will update unmodified userland utilities, as well as
656 unmodified GENERIC or SMP kernels distributed as a part of an
657 official &os; release. The &man.freebsd-update.8; utility
658 requires that the host being upgraded have Internet
661 <para>Source-based upgrades (those based on recompiling the &os;
662 base system from source code) from previous versions are
663 supported, according to the instructions in
664 <filename>/usr/src/UPDATING</filename>.</para>
667 <para>Upgrading &os; should only be attempted after
668 backing up <emphasis>all</emphasis> data and configuration