UPDATING revision 284487
1Updating Information for FreeBSD current users 2 3This file is maintained and copyrighted by M. Warner Losh <imp@freebsd.org>. 4See end of file for further details. For commonly done items, please see the 5COMMON ITEMS: section later in the file. These instructions assume that you 6basically know what you are doing. If not, then please consult the FreeBSD 7handbook: 8 9 http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html 10 11Items affecting the ports and packages system can be found in 12/usr/ports/UPDATING. Please read that file before running portupgrade. 13 14NOTE: FreeBSD has switched from gcc to clang. If you have trouble bootstrapping 15from older versions of FreeBSD, try WITHOUT_CLANG to bootstrap to the tip of 16stable/10, and then rebuild without this option. The bootstrap process from 17older version of current is a bit fragile. 18 1920150615: 20 The fix for the issue described in the 20150614 sendmail entry 21 below has been been committed in revision 284485. The work 22 around described in that entry is no longer needed unless the 23 default setting is overridden by a confDH_PARAMETERS configuration 24 setting of '5' or pointing to a 512 bit DH parameter file. 25 2620150614: 27 The import of openssl to address the FreeBSD-SA-15:10.openssl 28 security advisory includes a change which rejects handshakes 29 with DH parameters below 768 bits. sendmail releases prior 30 to 8.15.2 (not yet released), defaulted to a 512 bit 31 DH parameter setting for client connections. To work around 32 this interoperability, sendmail can be configured to use a 33 2048 bit DH parameter by: 34 35 1. Edit /etc/mail/`hostname`.mc 36 2. If a setting for confDH_PARAMETERS does not exist or 37 exists and is set to a string beginning with '5', 38 replace it with '2'. 39 3. If a setting for confDH_PARAMETERS exists and is set to 40 a file path, create a new file with: 41 openssl dhparam -out /path/to/file 2048 42 4. Rebuild the .cf file: 43 cd /etc/mail/; make; make install 44 5. Restart sendmail: 45 cd /etc/mail/; make restart 46 47 A sendmail patch is coming, at which time this file will be 48 updated. 49 5020150601: 51 chmod, chflags, chown and chgrp now affect symlinks in -R mode as 52 defined in symlink(7); previously symlinks were silently ignored. 53 5420150430: 55 The const qualifier has been removed from iconv(3) to comply with 56 POSIX. The ports tree is aware of this from r384038 onwards. 57 5820141215: 59 At svn r275807, The default linux compat kernel ABI has been adjusted 60 to 2.6.18 in support of the linux-c6 compat ports infrastructure 61 update. If you wish to continue using the linux-f10 compat ports, 62 add compat.linux.osrelease=2.6.16 to your local sysctl.conf. Users are 63 encouraged to update their linux-compat packages to linux-c6 during 64 their next update cycle. 65 66 See ports/UPDATING 20141209 and 20141215 on migration to CentOS 6 ports. 67 6820141205: 69 pjdfstest has been integrated into kyua as an opt-in test suite. 70 Please see share/doc/pjdfstest/README for a more details on how to 71 execute it. 72 7320141118: 74 10.1-RELEASE. 75 7620140904: 77 The ofwfb driver, used to provide a graphics console on PowerPC when 78 using vt(4), no longer allows mmap() of all of physical memory. This 79 will prevent Xorg on PowerPC with some ATI graphics cards from 80 initializing properly unless x11-servers/xorg-server is updated to 81 1.12.4_8 or newer. 82 8320140831: 84 The libatf-c and libatf-c++ major versions were downgraded to 0 and 85 1 respectively to match the upstream numbers. They were out of 86 sync because, when they were originally added to FreeBSD, the 87 upstream versions were not respected. These libraries are private 88 and not yet built by default, so renumbering them should be a 89 non-issue. However, unclean source trees will yield broken test 90 programs once the operator executes "make delete-old-libs" after a 91 "make installworld". 92 93 Additionally, the atf-sh binary was made private by moving it into 94 /usr/libexec/. Already-built shell test programs will keep the 95 path to the old binary so they will break after "make delete-old" 96 is run. 97 98 If you are using WITH_TESTS=yes (not the default), wipe the object 99 tree and rebuild from scratch to prevent spurious test failures. 100 This is only needed once: the misnumbered libraries and misplaced 101 binaries have been added to OptionalObsoleteFiles.inc so they will 102 be removed during a clean upgrade. 103 10420140814: 105 The ixgbe tunables now match their sysctl counterparts, for example: 106 hw.ixgbe.enable_aim => hw.ix.enable_aim 107 Anyone using ixgbe tunables should ensure they update /boot/loader.conf. 108 10920140801: 110 The NFSv4.1 server committed by r269398 changes the internal 111 function call interfaces used between the NFS and krpc modules. 112 As such, __FreeBSD_version was bumped. 113 11420140729: 115 The default unbound configuration has been modified to address 116 issues with reverse lookups on networks that use private 117 address ranges. If you use the local_unbound service, run 118 "service local_unbound setup" as root to regenerate your 119 configuration, then "service local_unbound reload" to load the 120 new configuration. 121 12220140717: 123 It is no longer necessary to include the dwarf version in your DEBUG 124 options in your kernel config file. The bug that required it to be 125 placed in the config file has bene fixed. DEBUG should now just 126 contain -g. The build system will automatically update things 127 to do the right thing. 128 12920140715: 130 Several ABI breaking changes were merged to CTL and new iSCSI code. 131 All CTL and iSCSI-related tools, such as ctladm, ctld, iscsid and 132 iscsictl need to be rebuilt to work with a new kernel. 133 13420140708: 135 The WITHOUT_VT_SUPPORT kernel config knob has been renamed 136 WITHOUT_VT. (The other _SUPPORT knobs have a consistent meaning 137 which differs from the behaviour controlled by this knob.) 138 13920140608: 140 On i386 and amd64 systems, the onifconsole flag is now set by default 141 in /etc/ttys for ttyu0. This causes ttyu0 to be automatically enabled 142 as a login TTY if it is set in the bootloader as an active kernel 143 console. No changes in behavior should result otherwise. To revert to 144 the previous behavior, set ttyu0 to "off" in /etc/ttys. 145 14620140512: 147 Clang and llvm have been upgraded to 3.4.1 release. 148 14920140321: 150 Clang and llvm have been upgraded to 3.4 release. 151 15220140306: 153 If a Makefile in a tests/ directory was auto-generating a Kyuafile 154 instead of providing an explicit one, this would prevent such 155 Makefile from providing its own Kyuafile in the future during 156 NO_CLEAN builds. This has been fixed in the Makefiles but manual 157 intervention is needed to clean an objdir if you use NO_CLEAN: 158 # find /usr/obj -name Kyuafile | xargs rm -f 159 16020140303: 161 OpenSSH will now ignore errors caused by kernel lacking of Capsicum 162 capability mode support. Please note that enabling the feature in 163 kernel is still highly recommended. 164 16520140227: 166 OpenSSH is now built with sandbox support, and will use sandbox as 167 the default privilege separation method. This requires Capsicum 168 capability mode support in kernel. 169 17020140216: 171 The nve(4) driver for NVIDIA nForce MCP Ethernet adapters has 172 been deprecated and will not be part of FreeBSD 11.0 and later 173 releases. If you use this driver, please consider switching to 174 the nfe(4) driver instead. 175 17620140120: 177 10.0-RELEASE. 178 17920131216: 180 The behavior of gss_pseudo_random() for the krb5 mechanism 181 has changed, for applications requesting a longer random string 182 than produced by the underlying enctype's pseudo-random() function. 183 In particular, the random string produced from a session key of 184 enctype aes256-cts-hmac-sha1-96 or aes256-cts-hmac-sha1-96 will 185 be different at the 17th octet and later, after this change. 186 The counter used in the PRF+ construction is now encoded as a 187 big-endian integer in accordance with RFC 4402. 188 __FreeBSD_version is bumped to 1000701. 189 19020131108: 191 The WITHOUT_ATF build knob has been removed and its functionality 192 has been subsumed into the more generic WITHOUT_TESTS. If you were 193 using the former to disable the build of the ATF libraries, you 194 should change your settings to use the latter. 195 19620131031: 197 The default version of mtree is nmtree which is obtained from 198 NetBSD. The output is generally the same, but may vary 199 slightly. If you found you need identical output adding 200 "-F freebsd9" to the command line should do the trick. For the 201 time being, the old mtree is available as fmtree. 202 20320131014: 204 libbsdyml has been renamed to libyaml and moved to /usr/lib/private. 205 This will break ports-mgmt/pkg. Rebuild the port, or upgrade to pkg 206 1.1.4_8 and verify bsdyml not linked in, before running "make 207 delete-old-libs": 208 # make -C /usr/ports/ports-mgmt/pkg build deinstall install clean 209 or 210 # pkg install pkg; ldd /usr/local/sbin/pkg | grep bsdyml 211 21220131010: 213 The rc.d/jail script has been updated to support jail(8) 214 configuration file. The "jail_<jname>_*" rc.conf(5) variables 215 for per-jail configuration are automatically converted to 216 /var/run/jail.<jname>.conf before the jail(8) utility is invoked. 217 This is transparently backward compatible. See below about some 218 incompatibilities and rc.conf(5) manual page for more details. 219 220 These variables are now deprecated in favor of jail(8) configuration 221 file. One can use "rc.d/jail config <jname>" command to generate 222 a jail(8) configuration file in /var/run/jail.<jname>.conf without 223 running the jail(8) utility. The default pathname of the 224 configuration file is /etc/jail.conf and can be specified by 225 using $jail_conf or $jail_<jname>_conf variables. 226 227 Please note that jail_devfs_ruleset accepts an integer at 228 this moment. Please consider to rewrite the ruleset name 229 with an integer. 230 23120130930: 232 BIND has been removed from the base system. If all you need 233 is a local resolver, simply enable and start the local_unbound 234 service instead. Otherwise, several versions of BIND are 235 available in the ports tree. The dns/bind99 port is one example. 236 237 With this change, nslookup(1) and dig(1) are no longer in the base 238 system. Users should instead use host(1) and drill(1) which are 239 in the base system. Alternatively, nslookup and dig can 240 be obtained by installing the dns/bind-tools port. 241 24220130916: 243 With the addition of unbound(8), a new unbound user is now 244 required during installworld. "mergemaster -p" can be used to 245 add the user prior to installworld, as documented in the handbook. 246 24720130911: 248 OpenSSH is now built with DNSSEC support, and will by default 249 silently trust signed SSHFP records. This can be controlled with 250 the VerifyHostKeyDNS client configuration setting. DNSSEC support 251 can be disabled entirely with the WITHOUT_LDNS option in src.conf. 252 25320130906: 254 The GNU Compiler Collection and C++ standard library (libstdc++) 255 are no longer built by default on platforms where clang is the system 256 compiler. You can enable them with the WITH_GCC and WITH_GNUCXX 257 options in src.conf. 258 25920130905: 260 The PROCDESC kernel option is now part of the GENERIC kernel 261 configuration and is required for the rwhod(8) to work. 262 If you are using custom kernel configuration, you should include 263 'options PROCDESC'. 264 26520130905: 266 The API and ABI related to the Capsicum framework was modified 267 in backward incompatible way. The userland libraries and programs 268 have to be recompiled to work with the new kernel. This includes the 269 following libraries and programs, but the whole buildworld is 270 advised: libc, libprocstat, dhclient, tcpdump, hastd, hastctl, 271 kdump, procstat, rwho, rwhod, uniq. 272 27320130903: 274 AES-NI intrinsic support has been added to gcc. The AES-NI module 275 has been updated to use this support. A new gcc is required to build 276 the aesni module on both i386 and amd64. 277 27820130821: 279 The PADLOCK_RNG and RDRAND_RNG kernel options are now devices. 280 Thus "device padlock_rng" and "device rdrand_rng" should be 281 used instead of "options PADLOCK_RNG" & "options RDRAND_RNG". 282 28320130813: 284 WITH_ICONV has been split into two feature sets. WITH_ICONV now 285 enables just the iconv* functionality and is now on by default. 286 WITH_LIBICONV_COMPAT enables the libiconv api and link time 287 compatability. Set WITHOUT_ICONV to build the old way. 288 If you have been using WITH_ICONV before, you will very likely 289 need to turn on WITH_LIBICONV_COMPAT. 290 29120130806: 292 INVARIANTS option now enables DEBUG for code with OpenSolaris and 293 Illumos origin, including ZFS. If you have INVARIANTS in your 294 kernel configuration, then there is no need to set DEBUG or ZFS_DEBUG 295 explicitly. 296 DEBUG used to enable witness(9) tracking of OpenSolaris (mostly ZFS) 297 locks if WITNESS option was set. Because that generated a lot of 298 witness(9) reports and all of them were believed to be false 299 positives, this is no longer done. New option OPENSOLARIS_WITNESS 300 can be used to achieve the previous behavior. 301 30220130806: 303 Timer values in IPv6 data structures now use time_uptime instead 304 of time_second. Although this is not a user-visible functional 305 change, userland utilities which directly use them---ndp(8), 306 rtadvd(8), and rtsold(8) in the base system---need to be updated 307 to r253970 or later. 308 30920130802: 310 find -delete can now delete the pathnames given as arguments, 311 instead of only files found below them or if the pathname did 312 not contain any slashes. Formerly, the following error message 313 would result: 314 315 find: -delete: <path>: relative path potentially not safe 316 317 Deleting the pathnames given as arguments can be prevented 318 without error messages using -mindepth 1 or by changing 319 directory and passing "." as argument to find. This works in the 320 old as well as the new version of find. 321 32220130726: 323 Behavior of devfs rules path matching has been changed. 324 Pattern is now always matched against fully qualified devfs 325 path and slash characters must be explicitly matched by 326 slashes in pattern (FNM_PATHNAME). Rulesets involving devfs 327 subdirectories must be reviewed. 328 32920130716: 330 The default ARM ABI has changed to the ARM EABI. The old ABI is 331 incompatible with the ARM EABI and all programs and modules will 332 need to be rebuilt to work with a new kernel. 333 334 To keep using the old ABI ensure the WITHOUT_ARM_EABI knob is set. 335 336 NOTE: Support for the old ABI will be removed in the future and 337 users are advised to upgrade. 338 33920130709: 340 pkg_install has been disconnected from the build if you really need it 341 you should add WITH_PKGTOOLS in your src.conf(5). 342 34320130709: 344 Most of network statistics structures were changed to be able 345 keep 64-bits counters. Thus all tools, that work with networking 346 statistics, must be rebuilt (netstat(1), bsnmpd(1), etc.) 347 34820130629: 349 Fix targets that run multiple make's to use && rather than ; 350 so that subsequent steps depend on success of previous. 351 352 NOTE: if building 'universe' with -j* on stable/8 or stable/9 353 it would be better to start the build using bmake, to avoid 354 overloading the machine. 355 35620130618: 357 Fix a bug that allowed a tracing process (e.g. gdb) to write 358 to a memory-mapped file in the traced process's address space 359 even if neither the traced process nor the tracing process had 360 write access to that file. 361 36220130615: 363 CVS has been removed from the base system. An exact copy 364 of the code is available from the devel/cvs port. 365 36620130613: 367 Some people report the following error after the switch to bmake: 368 369 make: illegal option -- J 370 usage: make [-BPSXeiknpqrstv] [-C directory] [-D variable] 371 ... 372 *** [buildworld] Error code 2 373 374 this likely due to an old instance of make in 375 ${MAKEPATH} (${MAKEOBJDIRPREFIX}${.CURDIR}/make.${MACHINE}) 376 which src/Makefile will use that blindly, if it exists, so if 377 you see the above error: 378 379 rm -rf `make -V MAKEPATH` 380 381 should resolve it. 382 38320130516: 384 Use bmake by default. 385 Whereas before one could choose to build with bmake via 386 -DWITH_BMAKE one must now use -DWITHOUT_BMAKE to use the old 387 make. The goal is to remove these knobs for 10-RELEASE. 388 389 It is worth noting that bmake (like gmake) treats the command 390 line as the unit of failure, rather than statements within the 391 command line. Thus '(cd some/where && dosomething)' is safer 392 than 'cd some/where; dosomething'. The '()' allows consistent 393 behavior in parallel build. 394 39520130429: 396 Fix a bug that allows NFS clients to issue READDIR on files. 397 39820130426: 399 The WITHOUT_IDEA option has been removed because 400 the IDEA patent expired. 401 40220130426: 403 The sysctl which controls TRIM support under ZFS has been renamed 404 from vfs.zfs.trim_disable -> vfs.zfs.trim.enabled and has been 405 enabled by default. 406 40720130425: 408 The mergemaster command now uses the default MAKEOBJDIRPREFIX 409 rather than creating it's own in the temporary directory in 410 order allow access to bootstrapped versions of tools such as 411 install and mtree. When upgrading from version of FreeBSD where 412 the install command does not support -l, you will need to 413 install a new mergemaster command if mergemaster -p is required. 414 This can be accomplished with the command (cd src/usr.sbin/mergemaster 415 && make install). 416 41720130404: 418 Legacy ATA stack, disabled and replaced by new CAM-based one since 419 FreeBSD 9.0, completely removed from the sources. Kernel modules 420 atadisk and atapi*, user-level tools atacontrol and burncd are 421 removed. Kernel option `options ATA_CAM` is now permanently enabled 422 and removed. 423 42420130319: 425 SOCK_CLOEXEC and SOCK_NONBLOCK flags have been added to socket(2) 426 and socketpair(2). Software, in particular Kerberos, may 427 automatically detect and use these during building. The resulting 428 binaries will not work on older kernels. 429 43020130308: 431 CTL_DISABLE has also been added to the sparc64 GENERIC (for further 432 information, see the respective 20130304 entry). 433 43420130304: 435 Recent commits to callout(9) changed the size of struct callout, 436 so the KBI is probably heavily disturbed. Also, some functions 437 in callout(9)/sleep(9)/sleepqueue(9)/condvar(9) KPIs were replaced 438 by macros. Every kernel module using it won't load, so rebuild 439 is requested. 440 441 The ctl device has been re-enabled in GENERIC for i386 and amd64, 442 but does not initialize by default (because of the new CTL_DISABLE 443 option) to save memory. To re-enable it, remove the CTL_DISABLE 444 option from the kernel config file or set kern.cam.ctl.disable=0 445 in /boot/loader.conf. 446 44720130301: 448 The ctl device has been disabled in GENERIC for i386 and amd64. 449 This was done due to the extra memory being allocated at system 450 initialisation time by the ctl driver which was only used if 451 a CAM target device was created. This makes a FreeBSD system 452 unusable on 128MB or less of RAM. 453 45420130208: 455 A new compression method (lz4) has been merged to -HEAD. Please 456 refer to zpool-features(7) for more information. 457 458 Please refer to the "ZFS notes" section of this file for information 459 on upgrading boot ZFS pools. 460 46120130129: 462 A BSD-licensed patch(1) variant has been added and is installed 463 as bsdpatch, being the GNU version the default patch. 464 To inverse the logic and use the BSD-licensed one as default, 465 while having the GNU version installed as gnupatch, rebuild 466 and install world with the WITH_BSD_PATCH knob set. 467 46820130121: 469 Due to the use of the new -l option to install(1) during build 470 and install, you must take care not to directly set the INSTALL 471 make variable in your /etc/make.conf, /etc/src.conf, or on the 472 command line. If you wish to use the -C flag for all installs 473 you may be able to add INSTALL+=-C to /etc/make.conf or 474 /etc/src.conf. 475 47620130118: 477 The install(1) option -M has changed meaning and now takes an 478 argument that is a file or path to append logs to. In the 479 unlikely event that -M was the last option on the command line 480 and the command line contained at least two files and a target 481 directory the first file will have logs appended to it. The -M 482 option served little practical purpose in the last decade so its 483 use is expected to be extremely rare. 484 48520121223: 486 After switching to Clang as the default compiler some users of ZFS 487 on i386 systems started to experience stack overflow kernel panics. 488 Please consider using 'options KSTACK_PAGES=4' in such configurations. 489 49020121222: 491 GEOM_LABEL now mangles label names read from file system metadata. 492 Mangling affect labels containing spaces, non-printable characters, 493 '%' or '"'. Device names in /etc/fstab and other places may need to 494 be updated. 495 49620121217: 497 By default, only the 10 most recent kernel dumps will be saved. To 498 restore the previous behaviour (no limit on the number of kernel dumps 499 stored in the dump directory) add the following line to /etc/rc.conf: 500 501 savecore_flags="" 502 50320121201: 504 With the addition of auditdistd(8), a new auditdistd user is now 505 required during installworld. "mergemaster -p" can be used to 506 add the user prior to installworld, as documented in the handbook. 507 50820121117: 509 The sin6_scope_id member variable in struct sockaddr_in6 is now 510 filled by the kernel before passing the structure to the userland via 511 sysctl or routing socket. This means the KAME-specific embedded scope 512 id in sin6_addr.s6_addr[2] is always cleared in userland application. 513 This behavior can be controlled by net.inet6.ip6.deembed_scopeid. 514 __FreeBSD_version is bumped to 1000025. 515 51620121105: 517 On i386 and amd64 systems WITH_CLANG_IS_CC is now the default. 518 This means that the world and kernel will be compiled with clang 519 and that clang will be installed as /usr/bin/cc, /usr/bin/c++, 520 and /usr/bin/cpp. To disable this behavior and revert to building 521 with gcc, compile with WITHOUT_CLANG_IS_CC. Really old versions 522 of current may need to bootstrap WITHOUT_CLANG first if the clang 523 build fails (its compatibility window doesn't extend to the 9 stable 524 branch point). 525 52620121102: 527 The IPFIREWALL_FORWARD kernel option has been removed. Its 528 functionality now turned on by default. 529 53020121023: 531 The ZERO_COPY_SOCKET kernel option has been removed and 532 split into SOCKET_SEND_COW and SOCKET_RECV_PFLIP. 533 NB: SOCKET_SEND_COW uses the VM page based copy-on-write 534 mechanism which is not safe and may result in kernel crashes. 535 NB: The SOCKET_RECV_PFLIP mechanism is useless as no current 536 driver supports disposeable external page sized mbuf storage. 537 Proper replacements for both zero-copy mechanisms are under 538 consideration and will eventually lead to complete removal 539 of the two kernel options. 540 54120121023: 542 The IPv4 network stack has been converted to network byte 543 order. The following modules need to be recompiled together 544 with kernel: carp(4), divert(4), gif(4), siftr(4), gre(4), 545 pf(4), ipfw(4), ng_ipfw(4), stf(4). 546 54720121022: 548 Support for non-MPSAFE filesystems was removed from VFS. The 549 VFS_VERSION was bumped, all filesystem modules shall be 550 recompiled. 551 55220121018: 553 All the non-MPSAFE filesystems have been disconnected from 554 the build. The full list includes: codafs, hpfs, ntfs, nwfs, 555 portalfs, smbfs, xfs. 556 55720121016: 558 The interface cloning API and ABI has changed. The following 559 modules need to be recompiled together with kernel: 560 ipfw(4), pfsync(4), pflog(4), usb(4), wlan(4), stf(4), 561 vlan(4), disc(4), edsc(4), if_bridge(4), gif(4), tap(4), 562 faith(4), epair(4), enc(4), tun(4), if_lagg(4), gre(4). 563 56420121015: 565 The sdhci driver was split in two parts: sdhci (generic SD Host 566 Controller logic) and sdhci_pci (actual hardware driver). 567 No kernel config modifications are required, but if you 568 load sdhc as a module you must switch to sdhci_pci instead. 569 57020121014: 571 Import the FUSE kernel and userland support into base system. 572 57320121013: 574 The GNU sort(1) program has been removed since the BSD-licensed 575 sort(1) has been the default for quite some time and no serious 576 problems have been reported. The corresponding WITH_GNU_SORT 577 knob has also gone. 578 57920121006: 580 The pfil(9) API/ABI for AF_INET family has been changed. Packet 581 filtering modules: pf(4), ipfw(4), ipfilter(4) need to be recompiled 582 with new kernel. 583 58420121001: 585 The net80211(4) ABI has been changed to allow for improved driver 586 PS-POLL and power-save support. All wireless drivers need to be 587 recompiled to work with the new kernel. 588 58920120913: 590 The random(4) support for the VIA hardware random number 591 generator (`PADLOCK') is no longer enabled unconditionally. 592 Add the padlock_rng device in the custom kernel config if 593 needed. The GENERIC kernels on i386 and amd64 do include the 594 device, so the change only affects the custom kernel 595 configurations. 596 59720120908: 598 The pf(4) packet filter ABI has been changed. pfctl(8) and 599 snmp_pf module need to be recompiled to work with new kernel. 600 60120120828: 602 A new ZFS feature flag "com.delphix:empty_bpobj" has been merged 603 to -HEAD. Pools that have empty_bpobj in active state can not be 604 imported read-write with ZFS implementations that do not support 605 this feature. For more information read the zpool-features(5) 606 manual page. 607 60820120727: 609 The sparc64 ZFS loader has been changed to no longer try to auto- 610 detect ZFS providers based on diskN aliases but now requires these 611 to be explicitly listed in the OFW boot-device environment variable. 612 61320120712: 614 The OpenSSL has been upgraded to 1.0.1c. Any binaries requiring 615 libcrypto.so.6 or libssl.so.6 must be recompiled. Also, there are 616 configuration changes. Make sure to merge /etc/ssl/openssl.cnf. 617 61820120712: 619 The following sysctls and tunables have been renamed for consistency 620 with other variables: 621 kern.cam.da.da_send_ordered -> kern.cam.da.send_ordered 622 kern.cam.ada.ada_send_ordered -> kern.cam.ada.send_ordered 623 62420120628: 625 The sort utility has been replaced with BSD sort. For now, GNU sort 626 is also available as "gnusort" or the default can be set back to 627 GNU sort by setting WITH_GNU_SORT. In this case, BSD sort will be 628 installed as "bsdsort". 629 63020120611: 631 A new version of ZFS (pool version 5000) has been merged to -HEAD. 632 Starting with this version the old system of ZFS pool versioning 633 is superseded by "feature flags". This concept enables forward 634 compatibility against certain future changes in functionality of ZFS 635 pools. The first read-only compatible "feature flag" for ZFS pools 636 is named "com.delphix:async_destroy". For more information 637 read the new zpool-features(5) manual page. 638 Please refer to the "ZFS notes" section of this file for information 639 on upgrading boot ZFS pools. 640 64120120417: 642 The malloc(3) implementation embedded in libc now uses sources imported 643 as contrib/jemalloc. The most disruptive API change is to 644 /etc/malloc.conf. If your system has an old-style /etc/malloc.conf, 645 delete it prior to installworld, and optionally re-create it using the 646 new format after rebooting. See malloc.conf(5) for details 647 (specifically the TUNING section and the "opt.*" entries in the MALLCTL 648 NAMESPACE section). 649 65020120328: 651 Big-endian MIPS TARGET_ARCH values no longer end in "eb". mips64eb 652 is now spelled mips64. mipsn32eb is now spelled mipsn32. mipseb is 653 now spelled mips. This is to aid compatibility with third-party 654 software that expects this naming scheme in uname(3). Little-endian 655 settings are unchanged. If you are updating a big-endian mips64 machine 656 from before this change, you may need to set MACHINE_ARCH=mips64 in 657 your environment before the new build system will recognize your machine. 658 65920120306: 660 Disable by default the option VFS_ALLOW_NONMPSAFE for all supported 661 platforms. 662 66320120229: 664 Now unix domain sockets behave "as expected" on nullfs(5). Previously 665 nullfs(5) did not pass through all behaviours to the underlying layer, 666 as a result if we bound to a socket on the lower layer we could connect 667 only to the lower path; if we bound to the upper layer we could connect 668 only to the upper path. The new behavior is one can connect to both the 669 lower and the upper paths regardless what layer path one binds to. 670 67120120211: 672 The getifaddrs upgrade path broken with 20111215 has been restored. 673 If you have upgraded in between 20111215 and 20120209 you need to 674 recompile libc again with your kernel. You still need to recompile 675 world to be able to configure CARP but this restriction already 676 comes from 20111215. 677 67820120114: 679 The set_rcvar() function has been removed from /etc/rc.subr. All 680 base and ports rc.d scripts have been updated, so if you have a 681 port installed with a script in /usr/local/etc/rc.d you can either 682 hand-edit the rcvar= line, or reinstall the port. 683 684 An easy way to handle the mass-update of /etc/rc.d: 685 rm /etc/rc.d/* && mergemaster -i 686 68720120109: 688 panic(9) now stops other CPUs in the SMP systems, disables interrupts 689 on the current CPU and prevents other threads from running. 690 This behavior can be reverted using the kern.stop_scheduler_on_panic 691 tunable/sysctl. 692 The new behavior can be incompatible with kern.sync_on_panic. 693 69420111215: 695 The carp(4) facility has been changed significantly. Configuration 696 of the CARP protocol via ifconfig(8) has changed, as well as format 697 of CARP events submitted to devd(8) has changed. See manual pages 698 for more information. The arpbalance feature of carp(4) is currently 699 not supported anymore. 700 701 Size of struct in_aliasreq, struct in6_aliasreq has changed. User 702 utilities using SIOCAIFADDR, SIOCAIFADDR_IN6, e.g. ifconfig(8), 703 need to be recompiled. 704 70520111122: 706 The acpi_wmi(4) status device /dev/wmistat has been renamed to 707 /dev/wmistat0. 708 70920111108: 710 The option VFS_ALLOW_NONMPSAFE option has been added in order to 711 explicitely support non-MPSAFE filesystems. 712 It is on by default for all supported platform at this present 713 time. 714 71520111101: 716 The broken amd(4) driver has been replaced with esp(4) in the amd64, 717 i386 and pc98 GENERIC kernel configuration files. 718 71920110930: 720 sysinstall has been removed 721 72220110923: 723 The stable/9 branch created in subversion. This corresponds to the 724 RELENG_9 branch in CVS. 725 72620110913: 727 This commit modifies vfs_register() so that it uses a hash 728 calculation to set vfc_typenum, which is enabled by default. 729 The first time a system is booted after this change, the 730 vfc_typenum values will change for all file systems. The 731 main effect of this is a change to the NFS server file handles 732 for file systems that use vfc_typenum in their fsid, such as ZFS. 733 It will, however, prevent vfc_typenum from changing when file 734 systems are loaded in a different order for subsequent reboots. 735 To disable this, you can set vfs.typenumhash=0 in /boot/loader.conf 736 until you are ready to remount all NFS clients after a reboot. 737 73820110828: 739 Bump the shared library version numbers for libraries that 740 do not use symbol versioning, have changed the ABI compared 741 to stable/8 and which shared library version was not bumped. 742 Done as part of 9.0-RELEASE cycle. 743 74420110815: 745 During the merge of Capsicum features, the fget(9) KPI was modified. 746 This may require the rebuilding of out-of-tree device drivers -- 747 issues have been reported specifically with the nVidia device driver. 748 __FreeBSD_version is bumped to 900041. 749 750 Also, there is a period between 20110811 and 20110814 where the 751 special devices /dev/{stdin,stdout,stderr} did not work correctly. 752 Building world from a kernel during that window may not work. 753 75420110628: 755 The packet filter (pf) code has been updated to OpenBSD 4.5. 756 You need to update userland tools to be in sync with kernel. 757 This update breaks backward compatibility with earlier pfsync(4) 758 versions. Care must be taken when updating redundant firewall setups. 759 76020110608: 761 The following sysctls and tunables are retired on x86 platforms: 762 machdep.hlt_cpus 763 machdep.hlt_logical_cpus 764 The following sysctl is retired: 765 machdep.hyperthreading_allowed 766 The sysctls were supposed to provide a way to dynamically offline and 767 online selected CPUs on x86 platforms, but the implementation has not 768 been reliable especially with SCHED_ULE scheduler. 769 machdep.hyperthreading_allowed tunable is still available to ignore 770 hyperthreading CPUs at OS level. 771 Individual CPUs can be disabled using hint.lapic.X.disabled tunable, 772 where X is an APIC ID of a CPU. Be advised, though, that disabling 773 CPUs in non-uniform fashion will result in non-uniform topology and 774 may lead to sub-optimal system performance with SCHED_ULE, which is 775 a default scheduler. 776 77720110607: 778 cpumask_t type is retired and cpuset_t is used in order to describe 779 a mask of CPUs. 780 78120110531: 782 Changes to ifconfig(8) for dynamic address family detection mandate 783 that you are running a kernel of 20110525 or later. Make sure to 784 follow the update procedure to boot a new kernel before installing 785 world. 786 78720110513: 788 Support for sun4v architecture is officially dropped 789 79020110503: 791 Several KPI breaking changes have been committed to the mii(4) layer, 792 the PHY drivers and consequently some Ethernet drivers using mii(4). 793 This means that miibus.ko and the modules of the affected Ethernet 794 drivers need to be recompiled. 795 796 Note to kernel developers: Given that the OUI bit reversion problem 797 was fixed as part of these changes all mii(4) commits related to OUIs, 798 i.e. to sys/dev/mii/miidevs, PHY driver probing and vendor specific 799 handling, no longer can be merged verbatim to stable/8 and previous 800 branches. 801 80220110430: 803 Users of the Atheros AR71xx SoC code now need to add 'device ar71xx_pci' 804 into their kernel configurations along with 'device pci'. 805 80620110427: 807 The default NFS client is now the new NFS client, so fstype "newnfs" 808 is now "nfs" and the regular/old NFS client is now fstype "oldnfs". 809 Although mounts via fstype "nfs" will usually work without userland 810 changes, it is recommended that the mount(8) and mount_nfs(8) 811 commands be rebuilt from sources and that a link to mount_nfs called 812 mount_oldnfs be created. The new client is compiled into the 813 kernel with "options NFSCL" and this is needed for diskless root 814 file systems. The GENERIC kernel configs have been changed to use 815 NFSCL and NFSD (the new server) instead of NFSCLIENT and NFSSERVER. 816 To use the regular/old client, you can "mount -t oldnfs ...". For 817 a diskless root file system, you must also include a line like: 818 819 vfs.root.mountfrom="oldnfs:" 820 821 in the boot/loader.conf on the root fs on the NFS server to make 822 a diskless root fs use the old client. 823 82420110424: 825 The GENERIC kernels for all architectures now default to the new 826 CAM-based ATA stack. It means that all legacy ATA drivers were 827 removed and replaced by respective CAM drivers. If you are using 828 ATA device names in /etc/fstab or other places, make sure to update 829 them respectively (adX -> adaY, acdX -> cdY, afdX -> daY, astX -> saY, 830 where 'Y's are the sequential numbers starting from zero for each type 831 in order of detection, unless configured otherwise with tunables, 832 see cam(4)). There will be symbolic links created in /dev/ to map 833 old adX devices to the respective adaY. They should provide basic 834 compatibility for file systems mounting in most cases, but they do 835 not support old user-level APIs and do not have respective providers 836 in GEOM. Consider using updated management tools with new device names. 837 838 It is possible to load devices ahci, ata, siis and mvs as modules, 839 but option ATA_CAM should remain in kernel configuration to make ata 840 module work as CAM driver supporting legacy ATA controllers. Device ata 841 still can be used in modular fashion (atacore + ...). Modules atadisk 842 and atapi* are not used and won't affect operation in ATA_CAM mode. 843 Note that to use CAM-based ATA kernel should include CAM devices 844 scbus, pass, da (or explicitly ada), cd and optionally others. All of 845 them are parts of the cam module. 846 847 ataraid(4) functionality is now supported by the RAID GEOM class. 848 To use it you can load geom_raid kernel module and use graid(8) tool 849 for management. Instead of /dev/arX device names, use /dev/raid/rX. 850 851 No kernel config options or code have been removed, so if a problem 852 arises, please report it and optionally revert to the old ATA stack. 853 In order to do it you can remove from the kernel config: 854 options ATA_CAM 855 device ahci 856 device mvs 857 device siis 858 , and instead add back: 859 device atadisk # ATA disk drives 860 device ataraid # ATA RAID drives 861 device atapicd # ATAPI CDROM drives 862 device atapifd # ATAPI floppy drives 863 device atapist # ATAPI tape drives 864 86520110423: 866 The default NFS server has been changed to the new server, which 867 was referred to as the experimental server. If you need to switch 868 back to the old NFS server, you must now put the "-o" option on 869 both the mountd and nfsd commands. This can be done using the 870 mountd_flags and nfs_server_flags rc.conf variables until an 871 update to the rc scripts is committed, which is coming soon. 872 87320110418: 874 The GNU Objective-C runtime library (libobjc), and other Objective-C 875 related components have been removed from the base system. If you 876 require an Objective-C library, please use one of the available ports. 877 87820110331: 879 ath(4) has been split into bus- and device- modules. if_ath contains 880 the HAL, the TX rate control and the network device code. if_ath_pci 881 contains the PCI bus glue. For Atheros MIPS embedded systems, if_ath_ahb 882 contains the AHB glue. Users need to load both if_ath_pci and if_ath 883 in order to use ath on everything else. 884 885 TO REPEAT: if_ath_ahb is not needed for normal users. Normal users only 886 need to load if_ath and if_ath_pci for ath(4) operation. 887 88820110314: 889 As part of the replacement of sysinstall, the process of building 890 release media has changed significantly. For details, please re-read 891 release(7), which has been updated to reflect the new build process. 892 89320110218: 894 GNU binutils 2.17.50 (as of 2007-07-03) has been merged to -HEAD. This 895 is the last available version under GPLv2. It brings a number of new 896 features, such as support for newer x86 CPU's (with SSE-3, SSSE-3, SSE 897 4.1 and SSE 4.2), better support for powerpc64, a number of new 898 directives, and lots of other small improvements. See the ChangeLog 899 file in contrib/binutils for the full details. 900 90120110218: 902 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868 903 compliant, and will now use half of hash for authentication. 904 This will break interoperability with all stacks (including all 905 actual FreeBSD versions) who implement 906 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for 907 authentication). 908 The only workaround with such peers is to use another HMAC 909 algorithm for IPsec ("phase 2") authentication. 910 91120110207: 912 Remove the uio_yield prototype and symbol. This function has 913 been misnamed since it was introduced and should not be 914 globally exposed with this name. The equivalent functionality 915 is now available using kern_yield(curthread->td_user_pri). 916 The function remains undocumented. 917 91820110112: 919 A SYSCTL_[ADD_]UQUAD was added for unsigned uint64_t pointers, 920 symmetric with the existing SYSCTL_[ADD_]QUAD. Type checking 921 for scalar sysctls is defined but disabled. Code that needs 922 UQUAD to pass the type checking that must compile on older 923 systems where the define is not present can check against 924 __FreeBSD_version >= 900030. 925 926 The system dialog(1) has been replaced with a new version previously 927 in ports as devel/cdialog. dialog(1) is mostly command-line compatible 928 with the previous version, but the libdialog associated with it has 929 a largely incompatible API. As such, the original version of libdialog 930 will be kept temporarily as libodialog, until its base system consumers 931 are replaced or updated. Bump __FreeBSD_version to 900030. 932 93320110103: 934 If you are trying to run make universe on a -stable system, and you get 935 the following warning: 936 "Makefile", line 356: "Target architecture for i386/conf/GENERIC 937 unknown. config(8) likely too old." 938 or something similar to it, then you must upgrade your -stable system 939 to 8.2-Release or newer (really, any time after r210146 7/15/2010 in 940 stable/8) or build the config from the latest stable/8 branch and 941 install it on your system. 942 943 Prior to this date, building a current universe on 8-stable system from 944 between 7/15/2010 and 1/2/2011 would result in a weird shell parsing 945 error in the first kernel build phase. A new config on those old 946 systems will fix that problem for older versions of -current. 947 94820101228: 949 The TCP stack has been modified to allow Khelp modules to interact with 950 it via helper hook points and store per-connection data in the TCP 951 control block. Bump __FreeBSD_version to 900029. User space tools that 952 rely on the size of struct tcpcb in tcp_var.h (e.g. sockstat) need to 953 be recompiled. 954 95520101114: 956 Generic IEEE 802.3 annex 31B full duplex flow control support has been 957 added to mii(4) and bge(4), bce(4), msk(4), nfe(4) and stge(4) along 958 with brgphy(4), e1000phy(4) as well as ip1000phy() have been converted 959 to take advantage of it instead of using custom implementations. This 960 means that these drivers now no longer unconditionally advertise 961 support for flow control but only do so if flow control is a selected 962 media option. This was implemented in the generic support that way in 963 order to allow flow control to be switched on and off via ifconfig(8) 964 with the PHY specific default to typically off in order to protect 965 from unwanted effects. Consequently, if you used flow control with 966 one of the above mentioned drivers you now need to explicitly enable 967 it, for example via: 968 ifconfig bge0 media auto mediaopt flowcontrol 969 970 Along with the above mentioned changes generic support for setting 971 1000baseT master mode also has been added and brgphy(4), ciphy(4), 972 e1000phy(4) as well as ip1000phy(4) have been converted to take 973 advantage of it. This means that these drivers now no longer take the 974 link0 parameter for selecting master mode but the master media option 975 has to be used instead, for example like in the following: 976 ifconfig bge0 media 1000baseT mediaopt full-duplex,master 977 978 Selection of master mode now is also available with all other PHY 979 drivers supporting 1000baseT. 980 98120101111: 982 The TCP stack has received a significant update to add support for 983 modularised congestion control and generally improve the clarity of 984 congestion control decisions. Bump __FreeBSD_version to 900025. User 985 space tools that rely on the size of struct tcpcb in tcp_var.h (e.g. 986 sockstat) need to be recompiled. 987 98820101002: 989 The man(1) utility has been replaced by a new version that no longer 990 uses /etc/manpath.config. Please consult man.conf(5) for how to 991 migrate local entries to the new format. 992 99320100928: 994 The copyright strings printed by login(1) and sshd(8) at the time of a 995 new connection have been removed to follow other operating systems and 996 upstream sshd. 997 99820100915: 999 A workaround for a fixed ld bug has been removed in kernel code, 1000 so make sure that your system ld is built from sources after 1001 revision 210245 from 2010-07-19 (r211583 if building head kernel 1002 on stable/8, r211584 for stable/7; both from 2010-08-21). 1003 A symptom of incorrect ld version is different addresses for 1004 set_pcpu section and __start_set_pcpu symbol in kernel and/or modules. 1005 100620100913: 1007 The $ipv6_prefer variable in rc.conf(5) has been split into 1008 $ip6addrctl_policy and $ipv6_activate_all_interfaces. 1009 1010 The $ip6addrctl_policy is a variable to choose a pre-defined 1011 address selection policy set by ip6addrctl(8). A value 1012 "ipv4_prefer", "ipv6_prefer" or "AUTO" can be specified. The 1013 default is "AUTO". 1014 1015 The $ipv6_activate_all_interfaces specifies whether IFDISABLED 1016 flag (see an entry of 20090926) is set on an interface with no 1017 corresponding $ifconfig_IF_ipv6 line. The default is "NO" for 1018 security reason. If you want IPv6 link-local address on all 1019 interfaces by default, set this to "YES". 1020 1021 The old ipv6_prefer="YES" is equivalent to 1022 ipv6_activate_all_interfaces="YES" and 1023 ip6addrctl_policy="ipv6_prefer". 1024 102520100913: 1026 DTrace has grown support for userland tracing. Due to this, DTrace is 1027 now i386 and amd64 only. 1028 dtruss(1) is now installed by default on those systems and a new 1029 kernel module is needed for userland tracing: fasttrap. 1030 No changes to your kernel config file are necessary to enable 1031 userland tracing, but you might consider adding 'STRIP=' and 1032 'CFLAGS+=-fno-omit-frame-pointer' to your make.conf if you want 1033 to have informative userland stack traces in DTrace (ustack). 1034 103520100725: 1036 The acpi_aiboost(4) driver has been removed in favor of the new 1037 aibs(4) driver. You should update your kernel configuration file. 1038 103920100722: 1040 BSD grep has been imported to the base system and it is built by 1041 default. It is completely BSD licensed, highly GNU-compatible, uses 1042 less memory than its GNU counterpart and has a small codebase. 1043 However, it is slower than its GNU counterpart, which is mostly 1044 noticeable for larger searches, for smaller ones it is measurable 1045 but not significant. The reason is complex, the most important factor 1046 is that we lack a modern and efficient regex library and GNU 1047 overcomes this by optimizing the searches internally. Future work 1048 on improving the regex performance is planned, for the meantime, 1049 users that need better performance, can build GNU grep instead by 1050 setting the WITH_GNU_GREP knob. 1051 105220100713: 1053 Due to the import of powerpc64 support, all existing powerpc kernel 1054 configuration files must be updated with a machine directive like this: 1055 machine powerpc powerpc 1056 1057 In addition, an updated config(8) is required to build powerpc kernels 1058 after this change. 1059 106020100713: 1061 A new version of ZFS (version 15) has been merged to -HEAD. 1062 This version uses a python library for the following subcommands: 1063 zfs allow, zfs unallow, zfs groupspace, zfs userspace. 1064 For full functionality of these commands the following port must 1065 be installed: sysutils/py-zfs 1066 106720100429: 1068 'vm_page's are now hashed by physical address to an array of mutexes. 1069 Currently this is only used to serialize access to hold_count. Over 1070 time the page queue mutex will be peeled away. This changes the size 1071 of pmap on every architecture. And requires all callers of vm_page_hold 1072 and vm_page_unhold to be updated. 1073 107420100402: 1075 WITH_CTF can now be specified in src.conf (not recommended, there 1076 are some problems with static executables), make.conf (would also 1077 affect ports which do not use GNU make and do not override the 1078 compile targets) or in the kernel config (via "makeoptions 1079 WITH_CTF=yes"). 1080 When WITH_CTF was specified there before this was silently ignored, 1081 so make sure that WITH_CTF is not used in places which could lead 1082 to unwanted behavior. 1083 108420100311: 1085 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32 1086 to allow 32-bit compatibility on non-x86 platforms. All kernel 1087 configurations on amd64 and ia64 platforms using these options must 1088 be modified accordingly. 1089 109020100113: 1091 The utmp user accounting database has been replaced with utmpx, 1092 the user accounting interface standardized by POSIX. 1093 Unfortunately the semantics of utmp and utmpx don't match, 1094 making it practically impossible to support both interfaces. 1095 The user accounting database is used by tools like finger(1), 1096 last(1), talk(1), w(1) and ac(8). 1097 1098 All applications in the base system use utmpx. This means only 1099 local binaries (e.g. from the ports tree) may still use these 1100 utmp database files. These applications must be rebuilt to make 1101 use of utmpx. 1102 1103 After the system has been upgraded, it is safe to remove the old 1104 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*), 1105 assuming their contents is of no importance anymore. Old wtmp 1106 databases can only be used by last(1) and ac(8) after they have 1107 been converted to the new format using wtmpcvt(1). 1108 110920100108: 1110 Introduce the kernel thread "deadlock resolver" (which can be enabled 1111 via the DEADLKRES option, see NOTES for more details) and the 1112 sleepq_type() function for sleepqueues. 1113 111420091202: 1115 The rc.firewall and rc.firewall6 were unified, and 1116 rc.firewall6 and rc.d/ip6fw were removed. 1117 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc 1118 variables are obsoleted. Instead, the following new rc 1119 variables are added to rc.d/ipfw: 1120 1121 firewall_client_net_ipv6, firewall_simple_iif_ipv6, 1122 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6, 1123 firewall_simple_onet_ipv6, firewall_trusted_ipv6 1124 1125 The meanings correspond to the relevant IPv4 variables. 1126 112720091125: 1128 8.0-RELEASE. 1129 113020091113: 1131 The default terminal emulation for syscons(4) has been changed 1132 from cons25 to xterm on all platforms except pc98. This means 1133 that the /etc/ttys file needs to be updated to ensure correct 1134 operation of applications on the console. 1135 1136 The terminal emulation style can be toggled per window by using 1137 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration 1138 options can be used to change the compile-time default back to 1139 cons25. 1140 1141 To prevent graphical artifacts, make sure the TERM environment 1142 variable is set to match the terminal emulation that is being 1143 performed by syscons(4). 1144 114520091109: 1146 The layout of the structure ieee80211req_scan_result has changed. 1147 Applications that require wireless scan results (e.g. ifconfig(8)) 1148 from net80211 need to be recompiled. 1149 1150 Applications such as wpa_supplicant(8) may require a full world 1151 build without using NO_CLEAN in order to get synchronized with the 1152 new structure. 1153 115420091025: 1155 The iwn(4) driver has been updated to support the 5000 and 5150 series. 1156 There's one kernel module for each firmware. Adding "device iwnfw" 1157 to the kernel configuration file means including all three firmware 1158 images inside the kernel. If you want to include just the one for 1159 your wireless card, use the devices iwn4965fw, iwn5000fw or 1160 iwn5150fw. 1161 116220090926: 1163 The rc.d/network_ipv6, IPv6 configuration script has been integrated 1164 into rc.d/netif. The changes are the following: 1165 1166 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF 1167 for IPv4. For aliases, $ifconfig_IF_aliasN should be used. 1168 Note that both variables need the "inet6" keyword at the head. 1169 1170 Do not set $ipv6_network_interfaces manually if you do not 1171 understand what you are doing. It is not needed in most cases. 1172 1173 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but 1174 they are obsolete. 1175 1176 2. $ipv6_enable is obsolete. Use $ipv6_prefer and 1177 "inet6 accept_rtadv" keyword in ifconfig(8) instead. 1178 1179 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and 1180 all configured interfaces have "inet6 accept_rtadv" in the 1181 $ifconfig_IF_ipv6. These are for backward compatibility. 1182 1183 3. A new variable $ipv6_prefer has been added. If NO, IPv6 1184 functionality of interfaces with no corresponding 1185 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag, 1186 and the default address selection policy of ip6addrctl(8) 1187 is the IPv4-preferred one (see rc.d/ip6addrctl for more details). 1188 Note that if you want to configure IPv6 functionality on the 1189 disabled interfaces after boot, first you need to clear the flag by 1190 using ifconfig(8) like: 1191 1192 ifconfig em0 inet6 -ifdisabled 1193 1194 If YES, the default address selection policy is set as 1195 IPv6-preferred. 1196 1197 The default value of $ipv6_prefer is NO. 1198 1199 4. If your system need to receive Router Advertisement messages, 1200 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8) 1201 scripts automatically invoke rtsol(8) when the interface becomes 1202 UP. The Router Advertisement messages are used for SLAAC 1203 (State-Less Address AutoConfiguration). 1204 120520090922: 1206 802.11s D3.03 support was committed. This is incompatible with the 1207 previous code, which was based on D3.0. 1208 120920090912: 1210 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value 1211 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to 1212 control whether accepting Router Advertisement messages or not. 1213 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and 1214 a sysctl variable net.inet6.ip6.auto_linklocal is its default value. 1215 The ifconfig(8) utility now supports these flags. 1216 121720090910: 1218 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for 1219 mount(8) and -a option for df(1) to see them. 1220 122120090825: 1222 The old tunable hw.bus.devctl_disable has been superseded by 1223 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be 1224 replaced by hw.bus.devctl_queue=0. The default for this new tunable 1225 is 1000. 1226 122720090813: 1228 Remove the option STOP_NMI. The default action is now to use NMI only 1229 for KDB via the newly introduced function stop_cpus_hard() and 1230 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64. 1231 123220090803: 1233 The stable/8 branch created in subversion. This corresponds to the 1234 RELENG_8 branch in CVS. 1235 123620090719: 1237 Bump the shared library version numbers for all libraries that do not 1238 use symbol versioning as part of the 8.0-RELEASE cycle. Bump 1239 __FreeBSD_version to 800105. 1240 124120090714: 1242 Due to changes in the implementation of virtual network stack support, 1243 all network-related kernel modules must be recompiled. As this change 1244 breaks the ABI, bump __FreeBSD_version to 800104. 1245 124620090713: 1247 The TOE interface to the TCP syncache has been modified to remove 1248 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. 1249 The cxgb driver is the only TOE consumer affected by this change, and 1250 needs to be recompiled along with the kernel. As this change breaks 1251 the ABI, bump __FreeBSD_version to 800103. 1252 125320090712: 1254 Padding has been added to struct tcpcb, sackhint and tcpstat in 1255 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst 1256 maintaining the ABI. However, this change breaks the ABI, so bump 1257 __FreeBSD_version to 800102. User space tools that rely on the size of 1258 any of these structs (e.g. sockstat) need to be recompiled. 1259 126020090630: 1261 The NFS_LEGACYRPC option has been removed along with the old kernel 1262 RPC implementation that this option selected. Kernel configurations 1263 may need to be adjusted. 1264 126520090629: 1266 The network interface device nodes at /dev/net/<interface> have been 1267 removed. All ioctl operations can be performed the normal way using 1268 routing sockets. The kqueue functionality can generally be replaced 1269 with routing sockets. 1270 127120090628: 1272 The documentation from the FreeBSD Documentation Project (Handbook, 1273 FAQ, etc.) is now installed via packages by sysinstall(8) and under 1274 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc. 1275 127620090624: 1277 The ABI of various structures related to the SYSV IPC API have been 1278 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel 1279 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to 1280 800100. 1281 128220090622: 1283 Layout of struct vnet has changed as routing related variables were 1284 moved to their own Vimage module. Modules need to be recompiled. Bump 1285 __FreeBSD_version to 800099. 1286 128720090619: 1288 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024 1289 respectively. As long as no more than 16 groups per process are used, 1290 no changes should be visible. When more than 16 groups are used, old 1291 binaries may fail if they call getgroups() or getgrouplist() with 1292 statically sized storage. Recompiling will work around this, but 1293 applications should be modified to use dynamically allocated storage 1294 for group arrays as POSIX.1-2008 does not cap an implementation's 1295 number of supported groups at NGROUPS_MAX+1 as previous versions did. 1296 1297 NFS and portalfs mounts may also be affected as the list of groups is 1298 truncated to 16. Users of NFS who use more than 16 groups, should 1299 take care that negative group permissions are not used on the exported 1300 file systems as they will not be reliable unless a GSSAPI based 1301 authentication method is used. 1302 130320090616: 1304 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This 1305 option compiles in the support for adaptive spinning for lockmgrs 1306 which want to enable it. The lockinit() function now accepts the flag 1307 LK_ADAPTIVE in order to make the lock object subject to adaptive 1308 spinning when both held in write and read mode. 1309 131020090613: 1311 The layout of the structure returned by IEEE80211_IOC_STA_INFO has 1312 changed. User applications that use this ioctl need to be rebuilt. 1313 131420090611: 1315 The layout of struct thread has changed. Kernel and modules need to 1316 be rebuilt. 1317 131820090608: 1319 The layout of structs ifnet, domain, protosw and vnet_net has changed. 1320 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097. 1321 132220090602: 1323 window(1) has been removed from the base system. It can now be 1324 installed from ports. The port is called misc/window. 1325 132620090601: 1327 The way we are storing and accessing `routing table' entries has 1328 changed. Programs reading the FIB, like netstat, need to be 1329 re-compiled. 1330 133120090601: 1332 A new netisr implementation has been added for FreeBSD 8. Network 1333 file system modules, such as igmp, ipdivert, and others, should be 1334 rebuilt. 1335 Bump __FreeBSD_version to 800096. 1336 133720090530: 1338 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no 1339 more valid. 1340 134120090530: 1342 Add VOP_ACCESSX(9). File system modules need to be rebuilt. 1343 Bump __FreeBSD_version to 800094. 1344 134520090529: 1346 Add mnt_xflag field to 'struct mount'. File system modules need to be 1347 rebuilt. 1348 Bump __FreeBSD_version to 800093. 1349 135020090528: 1351 The compiling option ADAPTIVE_SX has been retired while it has been 1352 introduced the option NO_ADAPTIVE_SX which handles the reversed logic. 1353 The KPI for sx_init_flags() changes as accepting flags: 1354 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has 1355 been introduced in order to handle the reversed logic. 1356 Bump __FreeBSD_version to 800092. 1357 135820090527: 1359 Add support for hierarchical jails. Remove global securelevel. 1360 Bump __FreeBSD_version to 800091. 1361 136220090523: 1363 The layout of struct vnet_net has changed, therefore modules 1364 need to be rebuilt. 1365 Bump __FreeBSD_version to 800090. 1366 136720090523: 1368 The newly imported zic(8) produces a new format in the output. Please 1369 run tzsetup(8) to install the newly created data to /etc/localtime. 1370 137120090520: 1372 The sysctl tree for the usb stack has renamed from hw.usb2.* to 1373 hw.usb.* and is now consistent again with previous releases. 1374 137520090520: 1376 802.11 monitor mode support was revised and driver api's were changed. 1377 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead 1378 of DLT_IEEE802_11. No user-visible data structures were changed but 1379 applications that use DLT_IEEE802_11 may require changes. 1380 Bump __FreeBSD_version to 800088. 1381 138220090430: 1383 The layout of the following structs has changed: sysctl_oid, 1384 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet, 1385 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or 1386 panics may be experienced. World rebuild is required for 1387 correctly checking networking state from userland. 1388 Bump __FreeBSD_version to 800085. 1389 139020090429: 1391 MLDv2 and Source-Specific Multicast (SSM) have been merged 1392 to the IPv6 stack. VIMAGE hooks are in but not yet used. 1393 The implementation of SSM within FreeBSD's IPv6 stack closely 1394 follows the IPv4 implementation. 1395 1396 For kernel developers: 1397 1398 * The most important changes are that the ip6_output() and 1399 ip6_input() paths no longer take the IN6_MULTI_LOCK, 1400 and this lock has been downgraded to a non-recursive mutex. 1401 1402 * As with the changes to the IPv4 stack to support SSM, filtering 1403 of inbound multicast traffic must now be performed by transport 1404 protocols within the IPv6 stack. This does not apply to TCP and 1405 SCTP, however, it does apply to UDP in IPv6 and raw IPv6. 1406 1407 * The KPIs used by IPv6 multicast are similar to those used by 1408 the IPv4 stack, with the following differences: 1409 * im6o_mc_filter() is analogous to imo_multicast_filter(). 1410 * The legacy KAME entry points in6_joingroup and in6_leavegroup() 1411 are shimmed to in6_mc_join() and in6_mc_leave() respectively. 1412 * IN6_LOOKUP_MULTI() has been deprecated and removed. 1413 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs 1414 for MLDv1 have an additional 'timer' argument which is used to 1415 jitter the initial membership report for the solicited-node 1416 multicast membership on-link. 1417 * This is not strictly needed for MLDv2, which already jitters 1418 its report transmissions. However, the 'timer' argument is 1419 preserved in case MLDv1 is active on the interface. 1420 1421 * The KAME linked-list based IPv6 membership implementation has 1422 been refactored to use a vector similar to that used by the IPv4 1423 stack. 1424 Code which maintains a list of its own multicast memberships 1425 internally, e.g. carp, has been updated to reflect the new 1426 semantics. 1427 1428 * There is a known Lock Order Reversal (LOR) due to in6_setscope() 1429 acquiring the IF_AFDATA_LOCK and being called within ip6_output(). 1430 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an 1431 implementation constraint which needs to be addressed in HEAD. 1432 1433 For application developers: 1434 1435 * The changes are broadly similar to those made for the IPv4 1436 stack. 1437 1438 * The use of IPv4 and IPv6 multicast socket options on the same 1439 socket, using mapped addresses, HAS NOT been tested or supported. 1440 1441 * There are a number of issues with the implementation of various 1442 IPv6 multicast APIs which need to be resolved in the API surface 1443 before the implementation is fully compatible with KAME userland 1444 use, and these are mostly to do with interface index treatment. 1445 1446 * The literature available discusses the use of either the delta / ASM 1447 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API 1448 using setsourcefilter(3)/getsourcefilter(3). For more information 1449 please refer to RFC 3768, 'Socket Interface Extensions for 1450 Multicast Source Filters'. 1451 1452 * Applications which use the published RFC 3678 APIs should be fine. 1453 1454 For systems administrators: 1455 1456 * The mtest(8) utility has been refactored to support IPv6, in 1457 addition to IPv4. Interface addresses are no longer accepted 1458 as arguments, their names must be used instead. The utility 1459 will map the interface name to its first IPv4 address as 1460 returned by getifaddrs(3). 1461 1462 * The ifmcstat(8) utility has also been updated to print the MLDv2 1463 endpoint state and source filter lists via sysctl(3). 1464 1465 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable 1466 loopback of IPv6 multicast datagrams by default; it defaults to 1 1467 to preserve the existing behaviour. Disabling multicast loopback is 1468 recommended for optimal system performance. 1469 1470 * The IPv6 MROUTING code has been changed to examine this sysctl 1471 instead of attempting to perform a group lookup before looping 1472 back forwarded datagrams. 1473 1474 Bump __FreeBSD_version to 800084. 1475 147620090422: 1477 Implement low-level Bluetooth HCI API. 1478 Bump __FreeBSD_version to 800083. 1479 148020090419: 1481 The layout of struct malloc_type, used by modules to register new 1482 memory allocation types, has changed. Most modules will need to 1483 be rebuilt or panics may be experienced. 1484 Bump __FreeBSD_version to 800081. 1485 148620090415: 1487 Anticipate overflowing inp_flags - add inp_flags2. 1488 This changes most offsets in inpcb, so checking v4 connection 1489 state will require a world rebuild. 1490 Bump __FreeBSD_version to 800080. 1491 149220090415: 1493 Add an llentry to struct route and struct route_in6. Modules 1494 embedding a struct route will need to be recompiled. 1495 Bump __FreeBSD_version to 800079. 1496 149720090414: 1498 The size of rt_metrics_lite and by extension rtentry has changed. 1499 Networking administration apps will need to be recompiled. 1500 The route command now supports show as an alias for get, weighting 1501 of routes, sticky and nostick flags to alter the behavior of stateful 1502 load balancing. 1503 Bump __FreeBSD_version to 800078. 1504 150520090408: 1506 Do not use Giant for kbdmux(4) locking. This is wrong and 1507 apparently causing more problems than it solves. This will 1508 re-open the issue where interrupt handlers may race with 1509 kbdmux(4) in polling mode. Typical symptoms include (but 1510 not limited to) duplicated and/or missing characters when 1511 low level console functions (such as gets) are used while 1512 interrupts are enabled (for example geli password prompt, 1513 mountroot prompt etc.). Disabling kbdmux(4) may help. 1514 151520090407: 1516 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed; 1517 kernel modules referencing any of the above need to be recompiled. 1518 Bump __FreeBSD_version to 800075. 1519 152020090320: 1521 GEOM_PART has become the default partition slicer for storage devices, 1522 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It 1523 introduces some changes: 1524 1525 MSDOS/EBR: the devices created from MSDOS extended partition entries 1526 (EBR) can be named differently than with GEOM_MBR and are now symlinks 1527 to devices with offset-based names. fstabs may need to be modified. 1528 1529 BSD: the "geometry does not match label" warning is harmless in most 1530 cases but it points to problems in file system misalignment with 1531 disk geometry. The "c" partition is now implicit, covers the whole 1532 top-level drive and cannot be (mis)used by users. 1533 1534 General: Kernel dumps are now not allowed to be written to devices 1535 whose partition types indicate they are meant to be used for file 1536 systems (or, in case of MSDOS partitions, as something else than 1537 the "386BSD" type). 1538 1539 Most of these changes date approximately from 200812. 1540 154120090319: 1542 The uscanner(4) driver has been removed from the kernel. This follows 1543 Linux removing theirs in 2.6 and making libusb the default interface 1544 (supported by sane). 1545 154620090319: 1547 The multicast forwarding code has been cleaned up. netstat(1) 1548 only relies on KVM now for printing bandwidth upcall meters. 1549 The IPv4 and IPv6 modules are split into ip_mroute_mod and 1550 ip6_mroute_mod respectively. The config(5) options for statically 1551 compiling this code remain the same, i.e. 'options MROUTING'. 1552 155320090315: 1554 Support for the IFF_NEEDSGIANT network interface flag has been 1555 removed, which means that non-MPSAFE network device drivers are no 1556 longer supported. In particular, if_ar, if_sr, and network device 1557 drivers from the old (legacy) USB stack can no longer be built or 1558 used. 1559 156020090313: 1561 POSIX.1 Native Language Support (NLS) has been enabled in libc and 1562 a bunch of new language catalog files have also been added. 1563 This means that some common libc messages are now localized and 1564 they depend on the LC_MESSAGES environmental variable. 1565 156620090313: 1567 The k8temp(4) driver has been renamed to amdtemp(4) since 1568 support for Family 10 and Family 11 CPU families was added. 1569 157020090309: 1571 IGMPv3 and Source-Specific Multicast (SSM) have been merged 1572 to the IPv4 stack. VIMAGE hooks are in but not yet used. 1573 1574 For kernel developers, the most important changes are that the 1575 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(), 1576 and this lock has been downgraded to a non-recursive mutex. 1577 1578 Transport protocols (UDP, Raw IP) are now responsible for filtering 1579 inbound multicast traffic according to group membership and source 1580 filters. The imo_multicast_filter() KPI exists for this purpose. 1581 Transports which do not use multicast (SCTP, TCP) already reject 1582 multicast by default. Forwarding and receive performance may improve 1583 as a mutex acquisition is no longer needed in the ip_input() 1584 low-level input path. in_addmulti() and in_delmulti() are shimmed 1585 to new KPIs which exist to support SSM in-kernel. 1586 1587 For application developers, it is recommended that loopback of 1588 multicast datagrams be disabled for best performance, as this 1589 will still cause the lock to be taken for each looped-back 1590 datagram transmission. The net.inet.ip.mcast.loop sysctl may 1591 be tuned to 0 to disable loopback by default; it defaults to 1 1592 to preserve the existing behaviour. 1593 1594 For systems administrators, to obtain best performance with 1595 multicast reception and multiple groups, it is always recommended 1596 that a card with a suitably precise hash filter is used. Hash 1597 collisions will still result in the lock being taken within the 1598 transport protocol input path to check group membership. 1599 1600 If deploying FreeBSD in an environment with IGMP snooping switches, 1601 it is recommended that the net.inet.igmp.sendlocal sysctl remain 1602 enabled; this forces 224.0.0.0/24 group membership to be announced 1603 via IGMP. 1604 1605 The size of 'struct igmpstat' has changed; netstat needs to be 1606 recompiled to reflect this. 1607 Bump __FreeBSD_version to 800070. 1608 160920090309: 1610 libusb20.so.1 is now installed as libusb.so.1 and the ports system 1611 updated to use it. This requires a buildworld/installworld in order to 1612 update the library and dependencies (usbconfig, etc). Its advisable to 1613 rebuild all ports which uses libusb. More specific directions are given 1614 in the ports collection UPDATING file. Any /etc/libmap.conf entries for 1615 libusb are no longer required and can be removed. 1616 161720090302: 1618 A workaround is committed to allow the creation of System V shared 1619 memory segment of size > 2 GB on the 64-bit architectures. 1620 Due to a limitation of the existing ABI, the shm_segsz member 1621 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is 1622 wrong for large segments. Note that limits must be explicitly 1623 raised to allow such segments to be created. 1624 162520090301: 1626 The layout of struct ifnet has changed, requiring a rebuild of all 1627 network device driver modules. 1628 162920090227: 1630 The /dev handling for the new USB stack has changed, a 1631 buildworld/installworld is required for libusb20. 1632 163320090223: 1634 The new USB2 stack has now been permanently moved in and all kernel and 1635 module names reverted to their previous values (eg, usb, ehci, ohci, 1636 ums, ...). The old usb stack can be compiled in by prefixing the name 1637 with the letter 'o', the old usb modules have been removed. 1638 Updating entry 20090216 for xorg and 20090215 for libmap may still 1639 apply. 1640 164120090217: 1642 The rc.conf(5) option if_up_delay has been renamed to 1643 defaultroute_delay to better reflect its purpose. If you have 1644 customized this setting in /etc/rc.conf you need to update it to 1645 use the new name. 1646 164720090216: 1648 xorg 7.4 wants to configure its input devices via hald which does not 1649 yet work with USB2. If the keyboard/mouse does not work in xorg then 1650 add 1651 Option "AllowEmptyInput" "off" 1652 to your ServerLayout section. This will cause X to use the configured 1653 kbd and mouse sections from your xorg.conf. 1654 165520090215: 1656 The GENERIC kernels for all architectures now default to the new USB2 1657 stack. No kernel config options or code have been removed so if a 1658 problem arises please report it and optionally revert to the old USB 1659 stack. If you are loading USB kernel modules or have a custom kernel 1660 that includes GENERIC then ensure that usb names are also changed over, 1661 eg uftdi -> usb2_serial_ftdi. 1662 1663 Older programs linked against the ports libusb 0.1 need to be 1664 redirected to the new stack's libusb20. /etc/libmap.conf can 1665 be used for this: 1666 # Map old usb library to new one for usb2 stack 1667 libusb-0.1.so.8 libusb20.so.1 1668 166920090209: 1670 All USB ethernet devices now attach as interfaces under the name ueN 1671 (eg. ue0). This is to provide a predictable name as vendors often 1672 change usb chipsets in a product without notice. 1673 167420090203: 1675 The ichsmb(4) driver has been changed to require SMBus slave 1676 addresses be left-justified (xxxxxxx0b) rather than right-justified. 1677 All of the other SMBus controller drivers require left-justified 1678 slave addresses, so this change makes all the drivers provide the 1679 same interface. 1680 168120090201: 1682 INET6 statistics (struct ip6stat) was updated. 1683 netstat(1) needs to be recompiled. 1684 168520090119: 1686 NTFS has been removed from GENERIC kernel on amd64 to match 1687 GENERIC on i386. Should not cause any issues since mount_ntfs(8) 1688 will load ntfs.ko module automatically when NTFS support is 1689 actually needed, unless ntfs.ko is not installed or security 1690 level prohibits loading kernel modules. If either is the case, 1691 "options NTFS" has to be added into kernel config. 1692 169320090115: 1694 TCP Appropriate Byte Counting (RFC 3465) support added to kernel. 1695 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to 1696 800061. User space tools that rely on the size of struct tcpcb in 1697 tcp_var.h (e.g. sockstat) need to be recompiled. 1698 169920081225: 1700 ng_tty(4) module updated to match the new TTY subsystem. 1701 Due to API change, user-level applications must be updated. 1702 New API support added to mpd5 CVS and expected to be present 1703 in next mpd5.3 release. 1704 170520081219: 1706 With __FreeBSD_version 800060 the makefs tool is part of 1707 the base system (it was a port). 1708 170920081216: 1710 The afdata and ifnet locks have been changed from mutexes to 1711 rwlocks, network modules will need to be re-compiled. 1712 171320081214: 1714 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite. 1715 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated. 1716 The new code reduced struct rtentry{} by 16 bytes on 32-bit 1717 architecture and 40 bytes on 64-bit architecture. The userland 1718 applications "arp" and "ndp" have been updated accordingly. 1719 The output from "netstat -r" shows only routing entries and 1720 none of the L2 information. 1721 172220081130: 1723 __FreeBSD_version 800057 marks the switchover from the 1724 binary ath hal to source code. Users must add the line: 1725 1726 options AH_SUPPORT_AR5416 1727 1728 to their kernel config files when specifying: 1729 1730 device ath_hal 1731 1732 The ath_hal module no longer exists; the code is now compiled 1733 together with the driver in the ath module. It is now 1734 possible to tailor chip support (i.e. reduce the set of chips 1735 and thereby the code size); consult ath_hal(4) for details. 1736 173720081121: 1738 __FreeBSD_version 800054 adds memory barriers to 1739 <machine/atomic.h>, new interfaces to ifnet to facilitate 1740 multiple hardware transmit queues for cards that support 1741 them, and a lock-less ring-buffer implementation to 1742 enable drivers to more efficiently manage queueing of 1743 packets. 1744 174520081117: 1746 A new version of ZFS (version 13) has been merged to -HEAD. 1747 This version has zpool attribute "listsnapshots" off by 1748 default, which means "zfs list" does not show snapshots, 1749 and is the same as Solaris behavior. 1750 175120081028: 1752 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled. 1753 175420081009: 1755 The uhci, ohci, ehci and slhci USB Host controller drivers have 1756 been put into separate modules. If you load the usb module 1757 separately through loader.conf you will need to load the 1758 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0 1759 controller add the following to loader.conf: 1760 1761 uhci_load="YES" 1762 ehci_load="YES" 1763 176420081009: 1765 The ABI used by the PMC toolset has changed. Please keep 1766 userland (libpmc(3)) and the kernel module (hwpmc(4)) in 1767 sync. 1768 176920081009: 1770 atapci kernel module now includes only generic PCI ATA 1771 driver. AHCI driver moved to ataahci kernel module. 1772 All vendor-specific code moved into separate kernel modules: 1773 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek, 1774 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron, 1775 atamarvell, atamicron, atanational, atanetcell, atanvidia, 1776 atapromise, ataserverworks, atasiliconimage, atasis, atavia 1777 177820080820: 1779 The TTY subsystem of the kernel has been replaced by a new 1780 implementation, which provides better scalability and an 1781 improved driver model. Most common drivers have been migrated to 1782 the new TTY subsystem, while others have not. The following 1783 drivers have not yet been ported to the new TTY layer: 1784 1785 PCI/ISA: 1786 cy, digi, rc, rp, sio 1787 1788 USB: 1789 ubser, ucycom 1790 1791 Line disciplines: 1792 ng_h4, ng_tty, ppp, sl, snp 1793 1794 Adding these drivers to your kernel configuration file shall 1795 cause compilation to fail. 1796 179720080818: 1798 ntpd has been upgraded to 4.2.4p5. 1799 180020080801: 1801 OpenSSH has been upgraded to 5.1p1. 1802 1803 For many years, FreeBSD's version of OpenSSH preferred DSA 1804 over RSA for host and user authentication keys. With this 1805 upgrade, we've switched to the vendor's default of RSA over 1806 DSA. This may cause upgraded clients to warn about unknown 1807 host keys even for previously known hosts. Users should 1808 follow the usual procedure for verifying host keys before 1809 accepting the RSA key. 1810 1811 This can be circumvented by setting the "HostKeyAlgorithms" 1812 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh 1813 command line. 1814 1815 Please note that the sequence of keys offered for 1816 authentication has been changed as well. You may want to 1817 specify IdentityFile in a different order to revert this 1818 behavior. 1819 182020080713: 1821 The sio(4) driver has been removed from the i386 and amd64 1822 kernel configuration files. This means uart(4) is now the 1823 default serial port driver on those platforms as well. 1824 1825 To prevent collisions with the sio(4) driver, the uart(4) driver 1826 uses different names for its device nodes. This means the 1827 onboard serial port will now most likely be called "ttyu0" 1828 instead of "ttyd0". You may need to reconfigure applications to 1829 use the new device names. 1830 1831 When using the serial port as a boot console, be sure to update 1832 /boot/device.hints and /etc/ttys before booting the new kernel. 1833 If you forget to do so, you can still manually specify the hints 1834 at the loader prompt: 1835 1836 set hint.uart.0.at="isa" 1837 set hint.uart.0.port="0x3F8" 1838 set hint.uart.0.flags="0x10" 1839 set hint.uart.0.irq="4" 1840 boot -s 1841 184220080609: 1843 The gpt(8) utility has been removed. Use gpart(8) to partition 1844 disks instead. 1845 184620080603: 1847 The version that Linuxulator emulates was changed from 2.4.2 1848 to 2.6.16. If you experience any problems with Linux binaries 1849 please try to set sysctl compat.linux.osrelease to 2.4.2 and 1850 if it fixes the problem contact emulation mailing list. 1851 185220080525: 1853 ISDN4BSD (I4B) was removed from the src tree. You may need to 1854 update a your kernel configuration and remove relevant entries. 1855 185620080509: 1857 I have checked in code to support multiple routing tables. 1858 See the man pages setfib(1) and setfib(2). 1859 This is a hopefully backwards compatible version, 1860 but to make use of it you need to compile your kernel 1861 with options ROUTETABLES=2 (or more up to 16). 1862 186320080420: 1864 The 802.11 wireless support was redone to enable multi-bss 1865 operation on devices that are capable. The underlying device 1866 is no longer used directly but instead wlanX devices are 1867 cloned with ifconfig. This requires changes to rc.conf files. 1868 For example, change: 1869 ifconfig_ath0="WPA DHCP" 1870 to 1871 wlans_ath0=wlan0 1872 ifconfig_wlan0="WPA DHCP" 1873 see rc.conf(5) for more details. In addition, mergemaster of 1874 /etc/rc.d is highly recommended. Simultaneous update of userland 1875 and kernel wouldn't hurt either. 1876 1877 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta 1878 modules were merged into the base wlan module. All references 1879 to these modules (e.g. in kernel config files) must be removed. 1880 188120080408: 1882 psm(4) has gained write(2) support in native operation level. 1883 Arbitrary commands can be written to /dev/psm%d and status can 1884 be read back from it. Therefore, an application is responsible 1885 for status validation and error recovery. It is a no-op in 1886 other operation levels. 1887 188820080312: 1889 Support for KSE threading has been removed from the kernel. To 1890 run legacy applications linked against KSE libmap.conf may 1891 be used. The following libmap.conf may be used to ensure 1892 compatibility with any prior release: 1893 1894 libpthread.so.1 libthr.so.1 1895 libpthread.so.2 libthr.so.2 1896 libkse.so.3 libthr.so.3 1897 189820080301: 1899 The layout of struct vmspace has changed. This affects libkvm 1900 and any executables that link against libkvm and use the 1901 kvm_getprocs() function. In particular, but not exclusively, 1902 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1). 1903 The effects are minimal, but it's advisable to upgrade world 1904 nonetheless. 1905 190620080229: 1907 The latest em driver no longer has support in it for the 1908 82575 adapter, this is now moved to the igb driver. The 1909 split was done to make new features that are incompatible 1910 with older hardware easier to do. 1911 191220080220: 1913 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4), 1914 likewise the kernel option is now GEOM_LINUX_LVM. 1915 191620080211: 1917 The default NFS mount mode has changed from UDP to TCP for 1918 increased reliability. If you rely on (insecurely) NFS 1919 mounting across a firewall you may need to update your 1920 firewall rules. 1921 192220080208: 1923 Belatedly note the addition of m_collapse for compacting 1924 mbuf chains. 1925 192620080126: 1927 The fts(3) structures have been changed to use adequate 1928 integer types for their members and so to be able to cope 1929 with huge file trees. The old fts(3) ABI is preserved 1930 through symbol versioning in libc, so third-party binaries 1931 using fts(3) should still work, although they will not take 1932 advantage of the extended types. At the same time, some 1933 third-party software might fail to build after this change 1934 due to unportable assumptions made in its source code about 1935 fts(3) structure members. Such software should be fixed 1936 by its vendor or, in the worst case, in the ports tree. 1937 FreeBSD_version 800015 marks this change for the unlikely 1938 case that a portable fix is impossible. 1939 194020080123: 1941 To upgrade to -current after this date, you must be running 1942 FreeBSD not older than 6.0-RELEASE. Upgrading to -current 1943 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems. 1944 194520071128: 1946 The ADAPTIVE_GIANT kernel option has been retired because its 1947 functionality is the default now. 1948 194920071118: 1950 The AT keyboard emulation of sunkbd(4) has been turned on 1951 by default. In order to make the special symbols of the Sun 1952 keyboards driven by sunkbd(4) work under X these now have 1953 to be configured the same way as Sun USB keyboards driven 1954 by ukbd(4) (which also does AT keyboard emulation), f.e.: 1955 1956 Option "XkbLayout" "us" 1957 Option "XkbRules" "xorg" 1958 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us" 1959 196020071024: 1961 It has been decided that it is desirable to provide ABI 1962 backwards compatibility to the FreeBSD 4/5/6 versions of the 1963 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was 1964 broken with the introduction of PCI domain support (see the 1965 20070930 entry). Unfortunately, this required the ABI of 1966 PCIOCGETCONF to be broken again in order to be able to 1967 provide backwards compatibility to the old version of that 1968 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled 1969 again. As for prominent ports this affects neither pciutils 1970 nor xorg-server this time, the hal port needs to be rebuilt 1971 however. 1972 197320071020: 1974 The misnamed kthread_create() and friends have been renamed 1975 to kproc_create() etc. Many of the callers already 1976 used kproc_start().. 1977 I will return kthread_create() and friends in a while 1978 with implementations that actually create threads, not procs. 1979 Renaming corresponds with version 800002. 1980 198120071010: 1982 RELENG_7 branched. 1983 1984COMMON ITEMS: 1985 1986 General Notes 1987 ------------- 1988 Avoid using make -j when upgrading. While generally safe, there are 1989 sometimes problems using -j to upgrade. If your upgrade fails with 1990 -j, please try again without -j. From time to time in the past there 1991 have been problems using -j with buildworld and/or installworld. This 1992 is especially true when upgrading between "distant" versions (eg one 1993 that cross a major release boundary or several minor releases, or when 1994 several months have passed on the -current branch). 1995 1996 Sometimes, obscure build problems are the result of environment 1997 poisoning. This can happen because the make utility reads its 1998 environment when searching for values for global variables. To run 1999 your build attempts in an "environmental clean room", prefix all make 2000 commands with 'env -i '. See the env(1) manual page for more details. 2001 2002 When upgrading from one major version to another it is generally best 2003 to upgrade to the latest code in the currently installed branch first, 2004 then do an upgrade to the new branch. This is the best-tested upgrade 2005 path, and has the highest probability of being successful. Please try 2006 this approach before reporting problems with a major version upgrade. 2007 2008 When upgrading a live system, having a root shell around before 2009 installing anything can help undo problems. Not having a root shell 2010 around can lead to problems if pam has changed too much from your 2011 starting point to allow continued authentication after the upgrade. 2012 2013 ZFS notes 2014 --------- 2015 When upgrading the boot ZFS pool to a new version, always follow 2016 these two steps: 2017 2018 1.) recompile and reinstall the ZFS boot loader and boot block 2019 (this is part of "make buildworld" and "make installworld") 2020 2021 2.) update the ZFS boot block on your boot drive 2022 2023 The following example updates the ZFS boot block on the first 2024 partition (freebsd-boot) of a GPT partitioned drive ad0: 2025 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0" 2026 2027 Non-boot pools do not need these updates. 2028 2029 To build a kernel 2030 ----------------- 2031 If you are updating from a prior version of FreeBSD (even one just 2032 a few days old), you should follow this procedure. It is the most 2033 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld, 2034 2035 make kernel-toolchain 2036 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE 2037 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE 2038 2039 To test a kernel once 2040 --------------------- 2041 If you just want to boot a kernel once (because you are not sure 2042 if it works, or if you want to boot a known bad kernel to provide 2043 debugging information) run 2044 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel 2045 nextboot -k testkernel 2046 2047 To just build a kernel when you know that it won't mess you up 2048 -------------------------------------------------------------- 2049 This assumes you are already running a CURRENT system. Replace 2050 ${arch} with the architecture of your machine (e.g. "i386", 2051 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc). 2052 2053 cd src/sys/${arch}/conf 2054 config KERNEL_NAME_HERE 2055 cd ../compile/KERNEL_NAME_HERE 2056 make depend 2057 make 2058 make install 2059 2060 If this fails, go to the "To build a kernel" section. 2061 2062 To rebuild everything and install it on the current system. 2063 ----------------------------------------------------------- 2064 # Note: sometimes if you are running current you gotta do more than 2065 # is listed here if you are upgrading from a really old current. 2066 2067 <make sure you have good level 0 dumps> 2068 make buildworld 2069 make kernel KERNCONF=YOUR_KERNEL_HERE 2070 [1] 2071 <reboot in single user> [3] 2072 mergemaster -p [5] 2073 make installworld 2074 mergemaster -i [4] 2075 make delete-old [6] 2076 <reboot> 2077 2078 To cross-install current onto a separate partition 2079 -------------------------------------------------- 2080 # In this approach we use a separate partition to hold 2081 # current's root, 'usr', and 'var' directories. A partition 2082 # holding "/", "/usr" and "/var" should be about 2GB in 2083 # size. 2084 2085 <make sure you have good level 0 dumps> 2086 <boot into -stable> 2087 make buildworld 2088 make buildkernel KERNCONF=YOUR_KERNEL_HERE 2089 <maybe newfs current's root partition> 2090 <mount current's root partition on directory ${CURRENT_ROOT}> 2091 make installworld DESTDIR=${CURRENT_ROOT} 2092 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd 2093 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT} 2094 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd 2095 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition> 2096 <reboot into current> 2097 <do a "native" rebuild/install as described in the previous section> 2098 <maybe install compatibility libraries from ports/misc/compat*> 2099 <reboot> 2100 2101 2102 To upgrade in-place from stable to current 2103 ---------------------------------------------- 2104 <make sure you have good level 0 dumps> 2105 make buildworld [9] 2106 make kernel KERNCONF=YOUR_KERNEL_HERE [8] 2107 [1] 2108 <reboot in single user> [3] 2109 mergemaster -p [5] 2110 make installworld 2111 mergemaster -i [4] 2112 make delete-old [6] 2113 <reboot> 2114 2115 Make sure that you've read the UPDATING file to understand the 2116 tweaks to various things you need. At this point in the life 2117 cycle of current, things change often and you are on your own 2118 to cope. The defaults can also change, so please read ALL of 2119 the UPDATING entries. 2120 2121 Also, if you are tracking -current, you must be subscribed to 2122 freebsd-current@freebsd.org. Make sure that before you update 2123 your sources that you have read and understood all the recent 2124 messages there. If in doubt, please track -stable which has 2125 much fewer pitfalls. 2126 2127 [1] If you have third party modules, such as vmware, you 2128 should disable them at this point so they don't crash your 2129 system on reboot. 2130 2131 [3] From the bootblocks, boot -s, and then do 2132 fsck -p 2133 mount -u / 2134 mount -a 2135 cd src 2136 adjkerntz -i # if CMOS is wall time 2137 Also, when doing a major release upgrade, it is required that 2138 you boot into single user mode to do the installworld. 2139 2140 [4] Note: This step is non-optional. Failure to do this step 2141 can result in a significant reduction in the functionality of the 2142 system. Attempting to do it by hand is not recommended and those 2143 that pursue this avenue should read this file carefully, as well 2144 as the archives of freebsd-current and freebsd-hackers mailing lists 2145 for potential gotchas. The -U option is also useful to consider. 2146 See mergemaster(8) for more information. 2147 2148 [5] Usually this step is a noop. However, from time to time 2149 you may need to do this if you get unknown user in the following 2150 step. It never hurts to do it all the time. You may need to 2151 install a new mergemaster (cd src/usr.sbin/mergemaster && make 2152 install) after the buildworld before this step if you last updated 2153 from current before 20130425 or from -stable before 20130430. 2154 2155 [6] This only deletes old files and directories. Old libraries 2156 can be deleted by "make delete-old-libs", but you have to make 2157 sure that no program is using those libraries anymore. 2158 2159 [8] In order to have a kernel that can run the 4.x binaries needed to 2160 do an installworld, you must include the COMPAT_FREEBSD4 option in 2161 your kernel. Failure to do so may leave you with a system that is 2162 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is 2163 required to run the 5.x binaries on more recent kernels. And so on 2164 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7. 2165 2166 Make sure that you merge any new devices from GENERIC since the 2167 last time you updated your kernel config file. 2168 2169 [9] When checking out sources, you must include the -P flag to have 2170 cvs prune empty directories. 2171 2172 If CPUTYPE is defined in your /etc/make.conf, make sure to use the 2173 "?=" instead of the "=" assignment operator, so that buildworld can 2174 override the CPUTYPE if it needs to. 2175 2176 MAKEOBJDIRPREFIX must be defined in an environment variable, and 2177 not on the command line, or in /etc/make.conf. buildworld will 2178 warn if it is improperly defined. 2179FORMAT: 2180 2181This file contains a list, in reverse chronological order, of major 2182breakages in tracking -current. It is not guaranteed to be a complete 2183list of such breakages, and only contains entries since October 10, 2007. 2184If you need to see UPDATING entries from before that date, you will need 2185to fetch an UPDATING file from an older FreeBSD release. 2186 2187Copyright information: 2188 2189Copyright 1998-2009 M. Warner Losh. All Rights Reserved. 2190 2191Redistribution, publication, translation and use, with or without 2192modification, in full or in part, in any form or format of this 2193document are permitted without further permission from the author. 2194 2195THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR 2196IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 2197WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 2198DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT, 2199INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 2200(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 2201SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2202HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 2203STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 2204IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 2205POSSIBILITY OF SUCH DAMAGE. 2206 2207Contact Warner Losh if you have any questions about your use of 2208this document. 2209 2210$FreeBSD: stable/10/UPDATING 284487 2015-06-17 02:47:30Z gshapiro $ 2211