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 16head, and then rebuild without this option. The bootstrap process from 17older version of current is a bit fragile. 18 19NOTE TO PEOPLE WHO THINK THAT FreeBSD 11.x IS SLOW: 20 FreeBSD 11.x has many debugging features turned on, in both the kernel 21 and userland. These features attempt to detect incorrect use of 22 system primitives, and encourage loud failure through extra sanity 23 checking and fail stop semantics. They also substantially impact 24 system performance. If you want to do performance measurement, 25 benchmarking, and optimization, you'll want to turn them off. This 26 includes various WITNESS- related kernel options, INVARIANTS, malloc 27 debugging flags in userland, and various verbose features in the 28 kernel. Many developers choose to disable these features on build 29 machines to maximize performance. (To completely disable malloc 30 debugging, define MALLOC_PRODUCTION in /etc/make.conf, or to merely 31 disable the most expensive debugging functionality run 32 "ln -s 'abort:false,junk:false' /etc/malloc.conf".) 33 3420140418: 35 The YES_HESIOD knob has been removed. It has been obsolete for 36 a decade. Please move to using WITH_HESIOD instead or your builds 37 will silently lack HESIOD. 38 3920140405: 40 The uart(4) driver has been changed with respect to its handling 41 of the low-level console. Previously the uart(4) driver prevented 42 any process from changing the baudrate or the CLOCAL and HUPCL 43 control flags. By removing the restrictions, operators can make 44 changes to the serial console port without having to reboot. 45 However, when getty(8) is started on the serial device that is 46 associated with the low-level console, a misconfigured terminal 47 line in /etc/ttys will now have a real impact. 48 Before upgrading the kernel, make sure that /etc/ttys has the 49 serial console device configured as 3wire without baudrate to 50 preserve the previous behaviour. E.g: 51 ttyu0 "/usr/libexec/getty 3wire" vt100 on secure 52 5320140306: 54 Support for libwrap (TCP wrappers) in rpcbind was disabled by default 55 to improve performance. To re-enable it, if needed, run rpcbind 56 with command line option -W. 57 5820140226: 59 Switched back to the GPL dtc compiler due to updates in the upstream 60 dts files not being supported by the BSDL dtc compiler. You will need 61 to rebuild your kernel toolchain to pick up the new compiler. Core dumps 62 may result while building dtb files during a kernel build if you fail 63 to do so. Set WITHOUT_GPL_DTC if you require the BSDL compiler. 64 6520140216: 66 Clang and llvm have been upgraded to 3.4 release. 67 6820140216: 69 The nve(4) driver has been removed. Please use the nfe(4) driver 70 for NVIDIA nForce MCP Ethernet adapters instead. 71 7220140212: 73 An ABI incompatibility crept into the libc++ 3.4 import in r261283. 74 This could cause certain C++ applications using shared libraries built 75 against the previous version of libc++ to crash. The incompatibility 76 has now been fixed, but any C++ applications or shared libraries built 77 between r261283 and r261801 should be recompiled. 78 7920140204: 80 OpenSSH will now ignore errors caused by kernel lacking of Capsicum 81 capability mode support. Please note that enabling the feature in 82 kernel is still highly recommended. 83 8420140131: 85 OpenSSH is now built with sandbox support, and will use sandbox as 86 the default privilege separation method. This requires Capsicum 87 capability mode support in kernel. 88 8920140128: 90 The libelf and libdwarf libraries have been updated to newer 91 versions from upstream. Shared library version numbers for 92 these two libraries were bumped. Any ports or binaries 93 requiring these two libraries should be recompiled. 94 __FreeBSD_version is bumped to 1100006. 95 9620140110: 97 If a Makefile in a tests/ directory was auto-generating a Kyuafile 98 instead of providing an explicit one, this would prevent such 99 Makefile from providing its own Kyuafile in the future during 100 NO_CLEAN builds. This has been fixed in the Makefiles but manual 101 intervention is needed to clean an objdir if you use NO_CLEAN: 102 # find /usr/obj -name Kyuafile | xargs rm -f 103 10420131213: 105 The behavior of gss_pseudo_random() for the krb5 mechanism 106 has changed, for applications requesting a longer random string 107 than produced by the underlying enctype's pseudo-random() function. 108 In particular, the random string produced from a session key of 109 enctype aes256-cts-hmac-sha1-96 or aes256-cts-hmac-sha1-96 will 110 be different at the 17th octet and later, after this change. 111 The counter used in the PRF+ construction is now encoded as a 112 big-endian integer in accordance with RFC 4402. 113 __FreeBSD_version is bumped to 1100004. 114 11520131108: 116 The WITHOUT_ATF build knob has been removed and its functionality 117 has been subsumed into the more generic WITHOUT_TESTS. If you were 118 using the former to disable the build of the ATF libraries, you 119 should change your settings to use the latter. 120 12120131025: 122 The default version of mtree is nmtree which is obtained from 123 NetBSD. The output is generally the same, but may vary 124 slightly. If you found you need identical output adding 125 "-F freebsd9" to the command line should do the trick. For the 126 time being, the old mtree is available as fmtree. 127 12820131014: 129 libbsdyml has been renamed to libyaml and moved to /usr/lib/private. 130 This will break ports-mgmt/pkg. Rebuild the port, or upgrade to pkg 131 1.1.4_8 and verify bsdyml not linked in, before running "make 132 delete-old-libs": 133 # make -C /usr/ports/ports-mgmt/pkg build deinstall install clean 134 or 135 # pkg install pkg; ldd /usr/local/sbin/pkg | grep bsdyml 136 13720131010: 138 The rc.d/jail script has been updated to support jail(8) 139 configuration file. The "jail_<jname>_*" rc.conf(5) variables 140 for per-jail configuration are automatically converted to 141 /var/run/jail.<jname>.conf before the jail(8) utility is invoked. 142 This is transparently backward compatible. See below about some 143 incompatibilities and rc.conf(5) manual page for more details. 144 145 These variables are now deprecated in favor of jail(8) configuration 146 file. One can use "rc.d/jail config <jname>" command to generate 147 a jail(8) configuration file in /var/run/jail.<jname>.conf without 148 running the jail(8) utility. The default pathname of the 149 configuration file is /etc/jail.conf and can be specified by 150 using $jail_conf or $jail_<jname>_conf variables. 151 152 Please note that jail_devfs_ruleset accepts an integer at 153 this moment. Please consider to rewrite the ruleset name 154 with an integer. 155 15620130930: 157 BIND has been removed from the base system. If all you need 158 is a local resolver, simply enable and start the local_unbound 159 service instead. Otherwise, several versions of BIND are 160 available in the ports tree. The dns/bind99 port is one example. 161 162 With this change, nslookup(1) and dig(1) are no longer in the base 163 system. Users should instead use host(1) and drill(1) which are 164 in the base system. Alternatively, nslookup and dig can 165 be obtained by installing the dns/bind-tools port. 166 16720130916: 168 With the addition of unbound(8), a new unbound user is now 169 required during installworld. "mergemaster -p" can be used to 170 add the user prior to installworld, as documented in the handbook. 171 17220130911: 173 OpenSSH is now built with DNSSEC support, and will by default 174 silently trust signed SSHFP records. This can be controlled with 175 the VerifyHostKeyDNS client configuration setting. DNSSEC support 176 can be disabled entirely with the WITHOUT_LDNS option in src.conf. 177 17820130906: 179 The GNU Compiler Collection and C++ standard library (libstdc++) 180 are no longer built by default on platforms where clang is the system 181 compiler. You can enable them with the WITH_GCC and WITH_GNUCXX 182 options in src.conf. 183 18420130905: 185 The PROCDESC kernel option is now part of the GENERIC kernel 186 configuration and is required for the rwhod(8) to work. 187 If you are using custom kernel configuration, you should include 188 'options PROCDESC'. 189 19020130905: 191 The API and ABI related to the Capsicum framework was modified 192 in backward incompatible way. The userland libraries and programs 193 have to be recompiled to work with the new kernel. This includes the 194 following libraries and programs, but the whole buildworld is 195 advised: libc, libprocstat, dhclient, tcpdump, hastd, hastctl, 196 kdump, procstat, rwho, rwhod, uniq. 197 19820130903: 199 AES-NI intrinsic support has been added to gcc. The AES-NI module 200 has been updated to use this support. A new gcc is required to build 201 the aesni module on both i386 and amd64. 202 20320130821: 204 The PADLOCK_RNG and RDRAND_RNG kernel options are now devices. 205 Thus "device padlock_rng" and "device rdrand_rng" should be 206 used instead of "options PADLOCK_RNG" & "options RDRAND_RNG". 207 20820130813: 209 WITH_ICONV has been split into two feature sets. WITH_ICONV now 210 enables just the iconv* functionality and is now on by default. 211 WITH_LIBICONV_COMPAT enables the libiconv api and link time 212 compatability. Set WITHOUT_ICONV to build the old way. 213 If you have been using WITH_ICONV before, you will very likely 214 need to turn on WITH_LIBICONV_COMPAT. 215 21620130806: 217 INVARIANTS option now enables DEBUG for code with OpenSolaris and 218 Illumos origin, including ZFS. If you have INVARIANTS in your 219 kernel configuration, then there is no need to set DEBUG or ZFS_DEBUG 220 explicitly. 221 DEBUG used to enable witness(9) tracking of OpenSolaris (mostly ZFS) 222 locks if WITNESS option was set. Because that generated a lot of 223 witness(9) reports and all of them were believed to be false 224 positives, this is no longer done. New option OPENSOLARIS_WITNESS 225 can be used to achieve the previous behavior. 226 22720130806: 228 Timer values in IPv6 data structures now use time_uptime instead 229 of time_second. Although this is not a user-visible functional 230 change, userland utilities which directly use them---ndp(8), 231 rtadvd(8), and rtsold(8) in the base system---need to be updated 232 to r253970 or later. 233 23420130802: 235 find -delete can now delete the pathnames given as arguments, 236 instead of only files found below them or if the pathname did 237 not contain any slashes. Formerly, the following error message 238 would result: 239 240 find: -delete: <path>: relative path potentially not safe 241 242 Deleting the pathnames given as arguments can be prevented 243 without error messages using -mindepth 1 or by changing 244 directory and passing "." as argument to find. This works in the 245 old as well as the new version of find. 246 24720130726: 248 Behavior of devfs rules path matching has been changed. 249 Pattern is now always matched against fully qualified devfs 250 path and slash characters must be explicitly matched by 251 slashes in pattern (FNM_PATHNAME). Rulesets involving devfs 252 subdirectories must be reviewed. 253 25420130716: 255 The default ARM ABI has changed to the ARM EABI. The old ABI is 256 incompatible with the ARM EABI and all programs and modules will 257 need to be rebuilt to work with a new kernel. 258 259 To keep using the old ABI ensure the WITHOUT_ARM_EABI knob is set. 260 261 NOTE: Support for the old ABI will be removed in the future and 262 users are advised to upgrade. 263 26420130709: 265 pkg_install has been disconnected from the build if you really need it 266 you should add WITH_PKGTOOLS in your src.conf(5). 267 26820130709: 269 Most of network statistics structures were changed to be able 270 keep 64-bits counters. Thus all tools, that work with networking 271 statistics, must be rebuilt (netstat(1), bsnmpd(1), etc.) 272 27320130629: 274 Fix targets that run multiple make's to use && rather than ; 275 so that subsequent steps depend on success of previous. 276 277 NOTE: if building 'universe' with -j* on stable/8 or stable/9 278 it would be better to start the build using bmake, to avoid 279 overloading the machine. 280 28120130618: 282 Fix a bug that allowed a tracing process (e.g. gdb) to write 283 to a memory-mapped file in the traced process's address space 284 even if neither the traced process nor the tracing process had 285 write access to that file. 286 28720130615: 288 CVS has been removed from the base system. An exact copy 289 of the code is available from the devel/cvs port. 290 29120130613: 292 Some people report the following error after the switch to bmake: 293 294 make: illegal option -- J 295 usage: make [-BPSXeiknpqrstv] [-C directory] [-D variable] 296 ... 297 *** [buildworld] Error code 2 298 299 this likely due to an old instance of make in 300 ${MAKEPATH} (${MAKEOBJDIRPREFIX}${.CURDIR}/make.${MACHINE}) 301 which src/Makefile will use that blindly, if it exists, so if 302 you see the above error: 303 304 rm -rf `make -V MAKEPATH` 305 306 should resolve it. 307 30820130516: 309 Use bmake by default. 310 Whereas before one could choose to build with bmake via 311 -DWITH_BMAKE one must now use -DWITHOUT_BMAKE to use the old 312 make. The goal is to remove these knobs for 10-RELEASE. 313 314 It is worth noting that bmake (like gmake) treats the command 315 line as the unit of failure, rather than statements within the 316 command line. Thus '(cd some/where && dosomething)' is safer 317 than 'cd some/where; dosomething'. The '()' allows consistent 318 behavior in parallel build. 319 32020130429: 321 Fix a bug that allows NFS clients to issue READDIR on files. 322 32320130426: 324 The WITHOUT_IDEA option has been removed because 325 the IDEA patent expired. 326 32720130426: 328 The sysctl which controls TRIM support under ZFS has been renamed 329 from vfs.zfs.trim_disable -> vfs.zfs.trim.enabled and has been 330 enabled by default. 331 33220130425: 333 The mergemaster command now uses the default MAKEOBJDIRPREFIX 334 rather than creating it's own in the temporary directory in 335 order allow access to bootstrapped versions of tools such as 336 install and mtree. When upgrading from version of FreeBSD where 337 the install command does not support -l, you will need to 338 install a new mergemaster command if mergemaster -p is required. 339 This can be accomplished with the command (cd src/usr.sbin/mergemaster 340 && make install). 341 34220130404: 343 Legacy ATA stack, disabled and replaced by new CAM-based one since 344 FreeBSD 9.0, completely removed from the sources. Kernel modules 345 atadisk and atapi*, user-level tools atacontrol and burncd are 346 removed. Kernel option `options ATA_CAM` is now permanently enabled 347 and removed. 348 34920130319: 350 SOCK_CLOEXEC and SOCK_NONBLOCK flags have been added to socket(2) 351 and socketpair(2). Software, in particular Kerberos, may 352 automatically detect and use these during building. The resulting 353 binaries will not work on older kernels. 354 35520130308: 356 CTL_DISABLE has also been added to the sparc64 GENERIC (for further 357 information, see the respective 20130304 entry). 358 35920130304: 360 Recent commits to callout(9) changed the size of struct callout, 361 so the KBI is probably heavily disturbed. Also, some functions 362 in callout(9)/sleep(9)/sleepqueue(9)/condvar(9) KPIs were replaced 363 by macros. Every kernel module using it won't load, so rebuild 364 is requested. 365 366 The ctl device has been re-enabled in GENERIC for i386 and amd64, 367 but does not initialize by default (because of the new CTL_DISABLE 368 option) to save memory. To re-enable it, remove the CTL_DISABLE 369 option from the kernel config file or set kern.cam.ctl.disable=0 370 in /boot/loader.conf. 371 37220130301: 373 The ctl device has been disabled in GENERIC for i386 and amd64. 374 This was done due to the extra memory being allocated at system 375 initialisation time by the ctl driver which was only used if 376 a CAM target device was created. This makes a FreeBSD system 377 unusable on 128MB or less of RAM. 378 37920130208: 380 A new compression method (lz4) has been merged to -HEAD. Please 381 refer to zpool-features(7) for more information. 382 383 Please refer to the "ZFS notes" section of this file for information 384 on upgrading boot ZFS pools. 385 38620130129: 387 A BSD-licensed patch(1) variant has been added and is installed 388 as bsdpatch, being the GNU version the default patch. 389 To inverse the logic and use the BSD-licensed one as default, 390 while having the GNU version installed as gnupatch, rebuild 391 and install world with the WITH_BSD_PATCH knob set. 392 39320130121: 394 Due to the use of the new -l option to install(1) during build 395 and install, you must take care not to directly set the INSTALL 396 make variable in your /etc/make.conf, /etc/src.conf, or on the 397 command line. If you wish to use the -C flag for all installs 398 you may be able to add INSTALL+=-C to /etc/make.conf or 399 /etc/src.conf. 400 40120130118: 402 The install(1) option -M has changed meaning and now takes an 403 argument that is a file or path to append logs to. In the 404 unlikely event that -M was the last option on the command line 405 and the command line contained at least two files and a target 406 directory the first file will have logs appended to it. The -M 407 option served little practical purpose in the last decade so its 408 use is expected to be extremely rare. 409 41020121223: 411 After switching to Clang as the default compiler some users of ZFS 412 on i386 systems started to experience stack overflow kernel panics. 413 Please consider using 'options KSTACK_PAGES=4' in such configurations. 414 41520121222: 416 GEOM_LABEL now mangles label names read from file system metadata. 417 Mangling affect labels containing spaces, non-printable characters, 418 '%' or '"'. Device names in /etc/fstab and other places may need to 419 be updated. 420 42120121217: 422 By default, only the 10 most recent kernel dumps will be saved. To 423 restore the previous behaviour (no limit on the number of kernel dumps 424 stored in the dump directory) add the following line to /etc/rc.conf: 425 426 savecore_flags="" 427 42820121201: 429 With the addition of auditdistd(8), a new auditdistd user is now 430 required during installworld. "mergemaster -p" can be used to 431 add the user prior to installworld, as documented in the handbook. 432 43320121117: 434 The sin6_scope_id member variable in struct sockaddr_in6 is now 435 filled by the kernel before passing the structure to the userland via 436 sysctl or routing socket. This means the KAME-specific embedded scope 437 id in sin6_addr.s6_addr[2] is always cleared in userland application. 438 This behavior can be controlled by net.inet6.ip6.deembed_scopeid. 439 __FreeBSD_version is bumped to 1000025. 440 44120121105: 442 On i386 and amd64 systems WITH_CLANG_IS_CC is now the default. 443 This means that the world and kernel will be compiled with clang 444 and that clang will be installed as /usr/bin/cc, /usr/bin/c++, 445 and /usr/bin/cpp. To disable this behavior and revert to building 446 with gcc, compile with WITHOUT_CLANG_IS_CC. Really old versions 447 of current may need to bootstrap WITHOUT_CLANG first if the clang 448 build fails (its compatibility window doesn't extend to the 9 stable 449 branch point). 450 45120121102: 452 The IPFIREWALL_FORWARD kernel option has been removed. Its 453 functionality now turned on by default. 454 45520121023: 456 The ZERO_COPY_SOCKET kernel option has been removed and 457 split into SOCKET_SEND_COW and SOCKET_RECV_PFLIP. 458 NB: SOCKET_SEND_COW uses the VM page based copy-on-write 459 mechanism which is not safe and may result in kernel crashes. 460 NB: The SOCKET_RECV_PFLIP mechanism is useless as no current 461 driver supports disposeable external page sized mbuf storage. 462 Proper replacements for both zero-copy mechanisms are under 463 consideration and will eventually lead to complete removal 464 of the two kernel options. 465 46620121023: 467 The IPv4 network stack has been converted to network byte 468 order. The following modules need to be recompiled together 469 with kernel: carp(4), divert(4), gif(4), siftr(4), gre(4), 470 pf(4), ipfw(4), ng_ipfw(4), stf(4). 471 47220121022: 473 Support for non-MPSAFE filesystems was removed from VFS. The 474 VFS_VERSION was bumped, all filesystem modules shall be 475 recompiled. 476 47720121018: 478 All the non-MPSAFE filesystems have been disconnected from 479 the build. The full list includes: codafs, hpfs, ntfs, nwfs, 480 portalfs, smbfs, xfs. 481 48220121016: 483 The interface cloning API and ABI has changed. The following 484 modules need to be recompiled together with kernel: 485 ipfw(4), pfsync(4), pflog(4), usb(4), wlan(4), stf(4), 486 vlan(4), disc(4), edsc(4), if_bridge(4), gif(4), tap(4), 487 faith(4), epair(4), enc(4), tun(4), if_lagg(4), gre(4). 488 48920121015: 490 The sdhci driver was split in two parts: sdhci (generic SD Host 491 Controller logic) and sdhci_pci (actual hardware driver). 492 No kernel config modifications are required, but if you 493 load sdhc as a module you must switch to sdhci_pci instead. 494 49520121014: 496 Import the FUSE kernel and userland support into base system. 497 49820121013: 499 The GNU sort(1) program has been removed since the BSD-licensed 500 sort(1) has been the default for quite some time and no serious 501 problems have been reported. The corresponding WITH_GNU_SORT 502 knob has also gone. 503 50420121006: 505 The pfil(9) API/ABI for AF_INET family has been changed. Packet 506 filtering modules: pf(4), ipfw(4), ipfilter(4) need to be recompiled 507 with new kernel. 508 50920121001: 510 The net80211(4) ABI has been changed to allow for improved driver 511 PS-POLL and power-save support. All wireless drivers need to be 512 recompiled to work with the new kernel. 513 51420120913: 515 The random(4) support for the VIA hardware random number 516 generator (`PADLOCK') is no longer enabled unconditionally. 517 Add the padlock_rng device in the custom kernel config if 518 needed. The GENERIC kernels on i386 and amd64 do include the 519 device, so the change only affects the custom kernel 520 configurations. 521 52220120908: 523 The pf(4) packet filter ABI has been changed. pfctl(8) and 524 snmp_pf module need to be recompiled to work with new kernel. 525 52620120828: 527 A new ZFS feature flag "com.delphix:empty_bpobj" has been merged 528 to -HEAD. Pools that have empty_bpobj in active state can not be 529 imported read-write with ZFS implementations that do not support 530 this feature. For more information read the zpool-features(5) 531 manual page. 532 53320120727: 534 The sparc64 ZFS loader has been changed to no longer try to auto- 535 detect ZFS providers based on diskN aliases but now requires these 536 to be explicitly listed in the OFW boot-device environment variable. 537 53820120712: 539 The OpenSSL has been upgraded to 1.0.1c. Any binaries requiring 540 libcrypto.so.6 or libssl.so.6 must be recompiled. Also, there are 541 configuration changes. Make sure to merge /etc/ssl/openssl.cnf. 542 54320120712: 544 The following sysctls and tunables have been renamed for consistency 545 with other variables: 546 kern.cam.da.da_send_ordered -> kern.cam.da.send_ordered 547 kern.cam.ada.ada_send_ordered -> kern.cam.ada.send_ordered 548 54920120628: 550 The sort utility has been replaced with BSD sort. For now, GNU sort 551 is also available as "gnusort" or the default can be set back to 552 GNU sort by setting WITH_GNU_SORT. In this case, BSD sort will be 553 installed as "bsdsort". 554 55520120611: 556 A new version of ZFS (pool version 5000) has been merged to -HEAD. 557 Starting with this version the old system of ZFS pool versioning 558 is superseded by "feature flags". This concept enables forward 559 compatibility against certain future changes in functionality of ZFS 560 pools. The first read-only compatible "feature flag" for ZFS pools 561 is named "com.delphix:async_destroy". For more information 562 read the new zpool-features(5) manual page. 563 Please refer to the "ZFS notes" section of this file for information 564 on upgrading boot ZFS pools. 565 56620120417: 567 The malloc(3) implementation embedded in libc now uses sources imported 568 as contrib/jemalloc. The most disruptive API change is to 569 /etc/malloc.conf. If your system has an old-style /etc/malloc.conf, 570 delete it prior to installworld, and optionally re-create it using the 571 new format after rebooting. See malloc.conf(5) for details 572 (specifically the TUNING section and the "opt.*" entries in the MALLCTL 573 NAMESPACE section). 574 57520120328: 576 Big-endian MIPS TARGET_ARCH values no longer end in "eb". mips64eb 577 is now spelled mips64. mipsn32eb is now spelled mipsn32. mipseb is 578 now spelled mips. This is to aid compatibility with third-party 579 software that expects this naming scheme in uname(3). Little-endian 580 settings are unchanged. If you are updating a big-endian mips64 machine 581 from before this change, you may need to set MACHINE_ARCH=mips64 in 582 your environment before the new build system will recognize your machine. 583 58420120306: 585 Disable by default the option VFS_ALLOW_NONMPSAFE for all supported 586 platforms. 587 58820120229: 589 Now unix domain sockets behave "as expected" on nullfs(5). Previously 590 nullfs(5) did not pass through all behaviours to the underlying layer, 591 as a result if we bound to a socket on the lower layer we could connect 592 only to the lower path; if we bound to the upper layer we could connect 593 only to the upper path. The new behavior is one can connect to both the 594 lower and the upper paths regardless what layer path one binds to. 595 59620120211: 597 The getifaddrs upgrade path broken with 20111215 has been restored. 598 If you have upgraded in between 20111215 and 20120209 you need to 599 recompile libc again with your kernel. You still need to recompile 600 world to be able to configure CARP but this restriction already 601 comes from 20111215. 602 60320120114: 604 The set_rcvar() function has been removed from /etc/rc.subr. All 605 base and ports rc.d scripts have been updated, so if you have a 606 port installed with a script in /usr/local/etc/rc.d you can either 607 hand-edit the rcvar= line, or reinstall the port. 608 609 An easy way to handle the mass-update of /etc/rc.d: 610 rm /etc/rc.d/* && mergemaster -i 611 61220120109: 613 panic(9) now stops other CPUs in the SMP systems, disables interrupts 614 on the current CPU and prevents other threads from running. 615 This behavior can be reverted using the kern.stop_scheduler_on_panic 616 tunable/sysctl. 617 The new behavior can be incompatible with kern.sync_on_panic. 618 61920111215: 620 The carp(4) facility has been changed significantly. Configuration 621 of the CARP protocol via ifconfig(8) has changed, as well as format 622 of CARP events submitted to devd(8) has changed. See manual pages 623 for more information. The arpbalance feature of carp(4) is currently 624 not supported anymore. 625 626 Size of struct in_aliasreq, struct in6_aliasreq has changed. User 627 utilities using SIOCAIFADDR, SIOCAIFADDR_IN6, e.g. ifconfig(8), 628 need to be recompiled. 629 63020111122: 631 The acpi_wmi(4) status device /dev/wmistat has been renamed to 632 /dev/wmistat0. 633 63420111108: 635 The option VFS_ALLOW_NONMPSAFE option has been added in order to 636 explicitely support non-MPSAFE filesystems. 637 It is on by default for all supported platform at this present 638 time. 639 64020111101: 641 The broken amd(4) driver has been replaced with esp(4) in the amd64, 642 i386 and pc98 GENERIC kernel configuration files. 643 64420110930: 645 sysinstall has been removed 646 64720110923: 648 The stable/9 branch created in subversion. This corresponds to the 649 RELENG_9 branch in CVS. 650 65120110913: 652 This commit modifies vfs_register() so that it uses a hash 653 calculation to set vfc_typenum, which is enabled by default. 654 The first time a system is booted after this change, the 655 vfc_typenum values will change for all file systems. The 656 main effect of this is a change to the NFS server file handles 657 for file systems that use vfc_typenum in their fsid, such as ZFS. 658 It will, however, prevent vfc_typenum from changing when file 659 systems are loaded in a different order for subsequent reboots. 660 To disable this, you can set vfs.typenumhash=0 in /boot/loader.conf 661 until you are ready to remount all NFS clients after a reboot. 662 66320110828: 664 Bump the shared library version numbers for libraries that 665 do not use symbol versioning, have changed the ABI compared 666 to stable/8 and which shared library version was not bumped. 667 Done as part of 9.0-RELEASE cycle. 668 66920110815: 670 During the merge of Capsicum features, the fget(9) KPI was modified. 671 This may require the rebuilding of out-of-tree device drivers -- 672 issues have been reported specifically with the nVidia device driver. 673 __FreeBSD_version is bumped to 900041. 674 675 Also, there is a period between 20110811 and 20110814 where the 676 special devices /dev/{stdin,stdout,stderr} did not work correctly. 677 Building world from a kernel during that window may not work. 678 67920110628: 680 The packet filter (pf) code has been updated to OpenBSD 4.5. 681 You need to update userland tools to be in sync with kernel. 682 This update breaks backward compatibility with earlier pfsync(4) 683 versions. Care must be taken when updating redundant firewall setups. 684 68520110608: 686 The following sysctls and tunables are retired on x86 platforms: 687 machdep.hlt_cpus 688 machdep.hlt_logical_cpus 689 The following sysctl is retired: 690 machdep.hyperthreading_allowed 691 The sysctls were supposed to provide a way to dynamically offline and 692 online selected CPUs on x86 platforms, but the implementation has not 693 been reliable especially with SCHED_ULE scheduler. 694 machdep.hyperthreading_allowed tunable is still available to ignore 695 hyperthreading CPUs at OS level. 696 Individual CPUs can be disabled using hint.lapic.X.disabled tunable, 697 where X is an APIC ID of a CPU. Be advised, though, that disabling 698 CPUs in non-uniform fashion will result in non-uniform topology and 699 may lead to sub-optimal system performance with SCHED_ULE, which is 700 a default scheduler. 701 70220110607: 703 cpumask_t type is retired and cpuset_t is used in order to describe 704 a mask of CPUs. 705 70620110531: 707 Changes to ifconfig(8) for dynamic address family detection mandate 708 that you are running a kernel of 20110525 or later. Make sure to 709 follow the update procedure to boot a new kernel before installing 710 world. 711 71220110513: 713 Support for sun4v architecture is officially dropped 714 71520110503: 716 Several KPI breaking changes have been committed to the mii(4) layer, 717 the PHY drivers and consequently some Ethernet drivers using mii(4). 718 This means that miibus.ko and the modules of the affected Ethernet 719 drivers need to be recompiled. 720 721 Note to kernel developers: Given that the OUI bit reversion problem 722 was fixed as part of these changes all mii(4) commits related to OUIs, 723 i.e. to sys/dev/mii/miidevs, PHY driver probing and vendor specific 724 handling, no longer can be merged verbatim to stable/8 and previous 725 branches. 726 72720110430: 728 Users of the Atheros AR71xx SoC code now need to add 'device ar71xx_pci' 729 into their kernel configurations along with 'device pci'. 730 73120110427: 732 The default NFS client is now the new NFS client, so fstype "newnfs" 733 is now "nfs" and the regular/old NFS client is now fstype "oldnfs". 734 Although mounts via fstype "nfs" will usually work without userland 735 changes, it is recommended that the mount(8) and mount_nfs(8) 736 commands be rebuilt from sources and that a link to mount_nfs called 737 mount_oldnfs be created. The new client is compiled into the 738 kernel with "options NFSCL" and this is needed for diskless root 739 file systems. The GENERIC kernel configs have been changed to use 740 NFSCL and NFSD (the new server) instead of NFSCLIENT and NFSSERVER. 741 To use the regular/old client, you can "mount -t oldnfs ...". For 742 a diskless root file system, you must also include a line like: 743 744 vfs.root.mountfrom="oldnfs:" 745 746 in the boot/loader.conf on the root fs on the NFS server to make 747 a diskless root fs use the old client. 748 74920110424: 750 The GENERIC kernels for all architectures now default to the new 751 CAM-based ATA stack. It means that all legacy ATA drivers were 752 removed and replaced by respective CAM drivers. If you are using 753 ATA device names in /etc/fstab or other places, make sure to update 754 them respectively (adX -> adaY, acdX -> cdY, afdX -> daY, astX -> saY, 755 where 'Y's are the sequential numbers starting from zero for each type 756 in order of detection, unless configured otherwise with tunables, 757 see cam(4)). There will be symbolic links created in /dev/ to map 758 old adX devices to the respective adaY. They should provide basic 759 compatibility for file systems mounting in most cases, but they do 760 not support old user-level APIs and do not have respective providers 761 in GEOM. Consider using updated management tools with new device names. 762 763 It is possible to load devices ahci, ata, siis and mvs as modules, 764 but option ATA_CAM should remain in kernel configuration to make ata 765 module work as CAM driver supporting legacy ATA controllers. Device ata 766 still can be used in modular fashion (atacore + ...). Modules atadisk 767 and atapi* are not used and won't affect operation in ATA_CAM mode. 768 Note that to use CAM-based ATA kernel should include CAM devices 769 scbus, pass, da (or explicitly ada), cd and optionally others. All of 770 them are parts of the cam module. 771 772 ataraid(4) functionality is now supported by the RAID GEOM class. 773 To use it you can load geom_raid kernel module and use graid(8) tool 774 for management. Instead of /dev/arX device names, use /dev/raid/rX. 775 776 No kernel config options or code have been removed, so if a problem 777 arises, please report it and optionally revert to the old ATA stack. 778 In order to do it you can remove from the kernel config: 779 options ATA_CAM 780 device ahci 781 device mvs 782 device siis 783 , and instead add back: 784 device atadisk # ATA disk drives 785 device ataraid # ATA RAID drives 786 device atapicd # ATAPI CDROM drives 787 device atapifd # ATAPI floppy drives 788 device atapist # ATAPI tape drives 789 79020110423: 791 The default NFS server has been changed to the new server, which 792 was referred to as the experimental server. If you need to switch 793 back to the old NFS server, you must now put the "-o" option on 794 both the mountd and nfsd commands. This can be done using the 795 mountd_flags and nfs_server_flags rc.conf variables until an 796 update to the rc scripts is committed, which is coming soon. 797 79820110418: 799 The GNU Objective-C runtime library (libobjc), and other Objective-C 800 related components have been removed from the base system. If you 801 require an Objective-C library, please use one of the available ports. 802 80320110331: 804 ath(4) has been split into bus- and device- modules. if_ath contains 805 the HAL, the TX rate control and the network device code. if_ath_pci 806 contains the PCI bus glue. For Atheros MIPS embedded systems, if_ath_ahb 807 contains the AHB glue. Users need to load both if_ath_pci and if_ath 808 in order to use ath on everything else. 809 810 TO REPEAT: if_ath_ahb is not needed for normal users. Normal users only 811 need to load if_ath and if_ath_pci for ath(4) operation. 812 81320110314: 814 As part of the replacement of sysinstall, the process of building 815 release media has changed significantly. For details, please re-read 816 release(7), which has been updated to reflect the new build process. 817 81820110218: 819 GNU binutils 2.17.50 (as of 2007-07-03) has been merged to -HEAD. This 820 is the last available version under GPLv2. It brings a number of new 821 features, such as support for newer x86 CPU's (with SSE-3, SSSE-3, SSE 822 4.1 and SSE 4.2), better support for powerpc64, a number of new 823 directives, and lots of other small improvements. See the ChangeLog 824 file in contrib/binutils for the full details. 825 82620110218: 827 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868 828 compliant, and will now use half of hash for authentication. 829 This will break interoperability with all stacks (including all 830 actual FreeBSD versions) who implement 831 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for 832 authentication). 833 The only workaround with such peers is to use another HMAC 834 algorithm for IPsec ("phase 2") authentication. 835 83620110207: 837 Remove the uio_yield prototype and symbol. This function has 838 been misnamed since it was introduced and should not be 839 globally exposed with this name. The equivalent functionality 840 is now available using kern_yield(curthread->td_user_pri). 841 The function remains undocumented. 842 84320110112: 844 A SYSCTL_[ADD_]UQUAD was added for unsigned uint64_t pointers, 845 symmetric with the existing SYSCTL_[ADD_]QUAD. Type checking 846 for scalar sysctls is defined but disabled. Code that needs 847 UQUAD to pass the type checking that must compile on older 848 systems where the define is not present can check against 849 __FreeBSD_version >= 900030. 850 851 The system dialog(1) has been replaced with a new version previously 852 in ports as devel/cdialog. dialog(1) is mostly command-line compatible 853 with the previous version, but the libdialog associated with it has 854 a largely incompatible API. As such, the original version of libdialog 855 will be kept temporarily as libodialog, until its base system consumers 856 are replaced or updated. Bump __FreeBSD_version to 900030. 857 85820110103: 859 If you are trying to run make universe on a -stable system, and you get 860 the following warning: 861 "Makefile", line 356: "Target architecture for i386/conf/GENERIC 862 unknown. config(8) likely too old." 863 or something similar to it, then you must upgrade your -stable system 864 to 8.2-Release or newer (really, any time after r210146 7/15/2010 in 865 stable/8) or build the config from the latest stable/8 branch and 866 install it on your system. 867 868 Prior to this date, building a current universe on 8-stable system from 869 between 7/15/2010 and 1/2/2011 would result in a weird shell parsing 870 error in the first kernel build phase. A new config on those old 871 systems will fix that problem for older versions of -current. 872 87320101228: 874 The TCP stack has been modified to allow Khelp modules to interact with 875 it via helper hook points and store per-connection data in the TCP 876 control block. Bump __FreeBSD_version to 900029. User space tools that 877 rely on the size of struct tcpcb in tcp_var.h (e.g. sockstat) need to 878 be recompiled. 879 88020101114: 881 Generic IEEE 802.3 annex 31B full duplex flow control support has been 882 added to mii(4) and bge(4), bce(4), msk(4), nfe(4) and stge(4) along 883 with brgphy(4), e1000phy(4) as well as ip1000phy() have been converted 884 to take advantage of it instead of using custom implementations. This 885 means that these drivers now no longer unconditionally advertise 886 support for flow control but only do so if flow control is a selected 887 media option. This was implemented in the generic support that way in 888 order to allow flow control to be switched on and off via ifconfig(8) 889 with the PHY specific default to typically off in order to protect 890 from unwanted effects. Consequently, if you used flow control with 891 one of the above mentioned drivers you now need to explicitly enable 892 it, for example via: 893 ifconfig bge0 media auto mediaopt flowcontrol 894 895 Along with the above mentioned changes generic support for setting 896 1000baseT master mode also has been added and brgphy(4), ciphy(4), 897 e1000phy(4) as well as ip1000phy(4) have been converted to take 898 advantage of it. This means that these drivers now no longer take the 899 link0 parameter for selecting master mode but the master media option 900 has to be used instead, for example like in the following: 901 ifconfig bge0 media 1000baseT mediaopt full-duplex,master 902 903 Selection of master mode now is also available with all other PHY 904 drivers supporting 1000baseT. 905 90620101111: 907 The TCP stack has received a significant update to add support for 908 modularised congestion control and generally improve the clarity of 909 congestion control decisions. Bump __FreeBSD_version to 900025. User 910 space tools that rely on the size of struct tcpcb in tcp_var.h (e.g. 911 sockstat) need to be recompiled. 912 91320101002: 914 The man(1) utility has been replaced by a new version that no longer 915 uses /etc/manpath.config. Please consult man.conf(5) for how to 916 migrate local entries to the new format. 917 91820100928: 919 The copyright strings printed by login(1) and sshd(8) at the time of a 920 new connection have been removed to follow other operating systems and 921 upstream sshd. 922 92320100915: 924 A workaround for a fixed ld bug has been removed in kernel code, 925 so make sure that your system ld is built from sources after 926 revision 210245 from 2010-07-19 (r211583 if building head kernel 927 on stable/8, r211584 for stable/7; both from 2010-08-21). 928 A symptom of incorrect ld version is different addresses for 929 set_pcpu section and __start_set_pcpu symbol in kernel and/or modules. 930 93120100913: 932 The $ipv6_prefer variable in rc.conf(5) has been split into 933 $ip6addrctl_policy and $ipv6_activate_all_interfaces. 934 935 The $ip6addrctl_policy is a variable to choose a pre-defined 936 address selection policy set by ip6addrctl(8). A value 937 "ipv4_prefer", "ipv6_prefer" or "AUTO" can be specified. The 938 default is "AUTO". 939 940 The $ipv6_activate_all_interfaces specifies whether IFDISABLED 941 flag (see an entry of 20090926) is set on an interface with no 942 corresponding $ifconfig_IF_ipv6 line. The default is "NO" for 943 security reason. If you want IPv6 link-local address on all 944 interfaces by default, set this to "YES". 945 946 The old ipv6_prefer="YES" is equivalent to 947 ipv6_activate_all_interfaces="YES" and 948 ip6addrctl_policy="ipv6_prefer". 949 95020100913: 951 DTrace has grown support for userland tracing. Due to this, DTrace is 952 now i386 and amd64 only. 953 dtruss(1) is now installed by default on those systems and a new 954 kernel module is needed for userland tracing: fasttrap. 955 No changes to your kernel config file are necessary to enable 956 userland tracing, but you might consider adding 'STRIP=' and 957 'CFLAGS+=-fno-omit-frame-pointer' to your make.conf if you want 958 to have informative userland stack traces in DTrace (ustack). 959 96020100725: 961 The acpi_aiboost(4) driver has been removed in favor of the new 962 aibs(4) driver. You should update your kernel configuration file. 963 96420100722: 965 BSD grep has been imported to the base system and it is built by 966 default. It is completely BSD licensed, highly GNU-compatible, uses 967 less memory than its GNU counterpart and has a small codebase. 968 However, it is slower than its GNU counterpart, which is mostly 969 noticeable for larger searches, for smaller ones it is measurable 970 but not significant. The reason is complex, the most important factor 971 is that we lack a modern and efficient regex library and GNU 972 overcomes this by optimizing the searches internally. Future work 973 on improving the regex performance is planned, for the meantime, 974 users that need better performance, can build GNU grep instead by 975 setting the WITH_GNU_GREP knob. 976 97720100713: 978 Due to the import of powerpc64 support, all existing powerpc kernel 979 configuration files must be updated with a machine directive like this: 980 machine powerpc powerpc 981 982 In addition, an updated config(8) is required to build powerpc kernels 983 after this change. 984 98520100713: 986 A new version of ZFS (version 15) has been merged to -HEAD. 987 This version uses a python library for the following subcommands: 988 zfs allow, zfs unallow, zfs groupspace, zfs userspace. 989 For full functionality of these commands the following port must 990 be installed: sysutils/py-zfs 991 99220100429: 993 'vm_page's are now hashed by physical address to an array of mutexes. 994 Currently this is only used to serialize access to hold_count. Over 995 time the page queue mutex will be peeled away. This changes the size 996 of pmap on every architecture. And requires all callers of vm_page_hold 997 and vm_page_unhold to be updated. 998 99920100402: 1000 WITH_CTF can now be specified in src.conf (not recommended, there 1001 are some problems with static executables), make.conf (would also 1002 affect ports which do not use GNU make and do not override the 1003 compile targets) or in the kernel config (via "makeoptions 1004 WITH_CTF=yes"). 1005 When WITH_CTF was specified there before this was silently ignored, 1006 so make sure that WITH_CTF is not used in places which could lead 1007 to unwanted behavior. 1008 100920100311: 1010 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32 1011 to allow 32-bit compatibility on non-x86 platforms. All kernel 1012 configurations on amd64 and ia64 platforms using these options must 1013 be modified accordingly. 1014 101520100113: 1016 The utmp user accounting database has been replaced with utmpx, 1017 the user accounting interface standardized by POSIX. 1018 Unfortunately the semantics of utmp and utmpx don't match, 1019 making it practically impossible to support both interfaces. 1020 The user accounting database is used by tools like finger(1), 1021 last(1), talk(1), w(1) and ac(8). 1022 1023 All applications in the base system use utmpx. This means only 1024 local binaries (e.g. from the ports tree) may still use these 1025 utmp database files. These applications must be rebuilt to make 1026 use of utmpx. 1027 1028 After the system has been upgraded, it is safe to remove the old 1029 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*), 1030 assuming their contents is of no importance anymore. Old wtmp 1031 databases can only be used by last(1) and ac(8) after they have 1032 been converted to the new format using wtmpcvt(1). 1033 103420100108: 1035 Introduce the kernel thread "deadlock resolver" (which can be enabled 1036 via the DEADLKRES option, see NOTES for more details) and the 1037 sleepq_type() function for sleepqueues. 1038 103920091202: 1040 The rc.firewall and rc.firewall6 were unified, and 1041 rc.firewall6 and rc.d/ip6fw were removed. 1042 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc 1043 variables are obsoleted. Instead, the following new rc 1044 variables are added to rc.d/ipfw: 1045 1046 firewall_client_net_ipv6, firewall_simple_iif_ipv6, 1047 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6, 1048 firewall_simple_onet_ipv6, firewall_trusted_ipv6 1049 1050 The meanings correspond to the relevant IPv4 variables. 1051 105220091125: 1053 8.0-RELEASE. 1054 105520091113: 1056 The default terminal emulation for syscons(4) has been changed 1057 from cons25 to xterm on all platforms except pc98. This means 1058 that the /etc/ttys file needs to be updated to ensure correct 1059 operation of applications on the console. 1060 1061 The terminal emulation style can be toggled per window by using 1062 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration 1063 options can be used to change the compile-time default back to 1064 cons25. 1065 1066 To prevent graphical artifacts, make sure the TERM environment 1067 variable is set to match the terminal emulation that is being 1068 performed by syscons(4). 1069 107020091109: 1071 The layout of the structure ieee80211req_scan_result has changed. 1072 Applications that require wireless scan results (e.g. ifconfig(8)) 1073 from net80211 need to be recompiled. 1074 1075 Applications such as wpa_supplicant(8) may require a full world 1076 build without using NO_CLEAN in order to get synchronized with the 1077 new structure. 1078 107920091025: 1080 The iwn(4) driver has been updated to support the 5000 and 5150 series. 1081 There's one kernel module for each firmware. Adding "device iwnfw" 1082 to the kernel configuration file means including all three firmware 1083 images inside the kernel. If you want to include just the one for 1084 your wireless card, use the devices iwn4965fw, iwn5000fw or 1085 iwn5150fw. 1086 108720090926: 1088 The rc.d/network_ipv6, IPv6 configuration script has been integrated 1089 into rc.d/netif. The changes are the following: 1090 1091 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF 1092 for IPv4. For aliases, $ifconfig_IF_aliasN should be used. 1093 Note that both variables need the "inet6" keyword at the head. 1094 1095 Do not set $ipv6_network_interfaces manually if you do not 1096 understand what you are doing. It is not needed in most cases. 1097 1098 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but 1099 they are obsolete. 1100 1101 2. $ipv6_enable is obsolete. Use $ipv6_prefer and 1102 "inet6 accept_rtadv" keyword in ifconfig(8) instead. 1103 1104 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and 1105 all configured interfaces have "inet6 accept_rtadv" in the 1106 $ifconfig_IF_ipv6. These are for backward compatibility. 1107 1108 3. A new variable $ipv6_prefer has been added. If NO, IPv6 1109 functionality of interfaces with no corresponding 1110 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag, 1111 and the default address selection policy of ip6addrctl(8) 1112 is the IPv4-preferred one (see rc.d/ip6addrctl for more details). 1113 Note that if you want to configure IPv6 functionality on the 1114 disabled interfaces after boot, first you need to clear the flag by 1115 using ifconfig(8) like: 1116 1117 ifconfig em0 inet6 -ifdisabled 1118 1119 If YES, the default address selection policy is set as 1120 IPv6-preferred. 1121 1122 The default value of $ipv6_prefer is NO. 1123 1124 4. If your system need to receive Router Advertisement messages, 1125 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8) 1126 scripts automatically invoke rtsol(8) when the interface becomes 1127 UP. The Router Advertisement messages are used for SLAAC 1128 (State-Less Address AutoConfiguration). 1129 113020090922: 1131 802.11s D3.03 support was committed. This is incompatible with the 1132 previous code, which was based on D3.0. 1133 113420090912: 1135 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value 1136 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to 1137 control whether accepting Router Advertisement messages or not. 1138 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and 1139 a sysctl variable net.inet6.ip6.auto_linklocal is its default value. 1140 The ifconfig(8) utility now supports these flags. 1141 114220090910: 1143 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for 1144 mount(8) and -a option for df(1) to see them. 1145 114620090825: 1147 The old tunable hw.bus.devctl_disable has been superseded by 1148 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be 1149 replaced by hw.bus.devctl_queue=0. The default for this new tunable 1150 is 1000. 1151 115220090813: 1153 Remove the option STOP_NMI. The default action is now to use NMI only 1154 for KDB via the newly introduced function stop_cpus_hard() and 1155 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64. 1156 115720090803: 1158 The stable/8 branch created in subversion. This corresponds to the 1159 RELENG_8 branch in CVS. 1160 116120090719: 1162 Bump the shared library version numbers for all libraries that do not 1163 use symbol versioning as part of the 8.0-RELEASE cycle. Bump 1164 __FreeBSD_version to 800105. 1165 116620090714: 1167 Due to changes in the implementation of virtual network stack support, 1168 all network-related kernel modules must be recompiled. As this change 1169 breaks the ABI, bump __FreeBSD_version to 800104. 1170 117120090713: 1172 The TOE interface to the TCP syncache has been modified to remove 1173 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. 1174 The cxgb driver is the only TOE consumer affected by this change, and 1175 needs to be recompiled along with the kernel. As this change breaks 1176 the ABI, bump __FreeBSD_version to 800103. 1177 117820090712: 1179 Padding has been added to struct tcpcb, sackhint and tcpstat in 1180 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst 1181 maintaining the ABI. However, this change breaks the ABI, so bump 1182 __FreeBSD_version to 800102. User space tools that rely on the size of 1183 any of these structs (e.g. sockstat) need to be recompiled. 1184 118520090630: 1186 The NFS_LEGACYRPC option has been removed along with the old kernel 1187 RPC implementation that this option selected. Kernel configurations 1188 may need to be adjusted. 1189 119020090629: 1191 The network interface device nodes at /dev/net/<interface> have been 1192 removed. All ioctl operations can be performed the normal way using 1193 routing sockets. The kqueue functionality can generally be replaced 1194 with routing sockets. 1195 119620090628: 1197 The documentation from the FreeBSD Documentation Project (Handbook, 1198 FAQ, etc.) is now installed via packages by sysinstall(8) and under 1199 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc. 1200 120120090624: 1202 The ABI of various structures related to the SYSV IPC API have been 1203 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel 1204 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to 1205 800100. 1206 120720090622: 1208 Layout of struct vnet has changed as routing related variables were 1209 moved to their own Vimage module. Modules need to be recompiled. Bump 1210 __FreeBSD_version to 800099. 1211 121220090619: 1213 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024 1214 respectively. As long as no more than 16 groups per process are used, 1215 no changes should be visible. When more than 16 groups are used, old 1216 binaries may fail if they call getgroups() or getgrouplist() with 1217 statically sized storage. Recompiling will work around this, but 1218 applications should be modified to use dynamically allocated storage 1219 for group arrays as POSIX.1-2008 does not cap an implementation's 1220 number of supported groups at NGROUPS_MAX+1 as previous versions did. 1221 1222 NFS and portalfs mounts may also be affected as the list of groups is 1223 truncated to 16. Users of NFS who use more than 16 groups, should 1224 take care that negative group permissions are not used on the exported 1225 file systems as they will not be reliable unless a GSSAPI based 1226 authentication method is used. 1227 122820090616: 1229 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This 1230 option compiles in the support for adaptive spinning for lockmgrs 1231 which want to enable it. The lockinit() function now accepts the flag 1232 LK_ADAPTIVE in order to make the lock object subject to adaptive 1233 spinning when both held in write and read mode. 1234 123520090613: 1236 The layout of the structure returned by IEEE80211_IOC_STA_INFO has 1237 changed. User applications that use this ioctl need to be rebuilt. 1238 123920090611: 1240 The layout of struct thread has changed. Kernel and modules need to 1241 be rebuilt. 1242 124320090608: 1244 The layout of structs ifnet, domain, protosw and vnet_net has changed. 1245 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097. 1246 124720090602: 1248 window(1) has been removed from the base system. It can now be 1249 installed from ports. The port is called misc/window. 1250 125120090601: 1252 The way we are storing and accessing `routing table' entries has 1253 changed. Programs reading the FIB, like netstat, need to be 1254 re-compiled. 1255 125620090601: 1257 A new netisr implementation has been added for FreeBSD 8. Network 1258 file system modules, such as igmp, ipdivert, and others, should be 1259 rebuilt. 1260 Bump __FreeBSD_version to 800096. 1261 126220090530: 1263 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no 1264 more valid. 1265 126620090530: 1267 Add VOP_ACCESSX(9). File system modules need to be rebuilt. 1268 Bump __FreeBSD_version to 800094. 1269 127020090529: 1271 Add mnt_xflag field to 'struct mount'. File system modules need to be 1272 rebuilt. 1273 Bump __FreeBSD_version to 800093. 1274 127520090528: 1276 The compiling option ADAPTIVE_SX has been retired while it has been 1277 introduced the option NO_ADAPTIVE_SX which handles the reversed logic. 1278 The KPI for sx_init_flags() changes as accepting flags: 1279 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has 1280 been introduced in order to handle the reversed logic. 1281 Bump __FreeBSD_version to 800092. 1282 128320090527: 1284 Add support for hierarchical jails. Remove global securelevel. 1285 Bump __FreeBSD_version to 800091. 1286 128720090523: 1288 The layout of struct vnet_net has changed, therefore modules 1289 need to be rebuilt. 1290 Bump __FreeBSD_version to 800090. 1291 129220090523: 1293 The newly imported zic(8) produces a new format in the output. Please 1294 run tzsetup(8) to install the newly created data to /etc/localtime. 1295 129620090520: 1297 The sysctl tree for the usb stack has renamed from hw.usb2.* to 1298 hw.usb.* and is now consistent again with previous releases. 1299 130020090520: 1301 802.11 monitor mode support was revised and driver api's were changed. 1302 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead 1303 of DLT_IEEE802_11. No user-visible data structures were changed but 1304 applications that use DLT_IEEE802_11 may require changes. 1305 Bump __FreeBSD_version to 800088. 1306 130720090430: 1308 The layout of the following structs has changed: sysctl_oid, 1309 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet, 1310 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or 1311 panics may be experienced. World rebuild is required for 1312 correctly checking networking state from userland. 1313 Bump __FreeBSD_version to 800085. 1314 131520090429: 1316 MLDv2 and Source-Specific Multicast (SSM) have been merged 1317 to the IPv6 stack. VIMAGE hooks are in but not yet used. 1318 The implementation of SSM within FreeBSD's IPv6 stack closely 1319 follows the IPv4 implementation. 1320 1321 For kernel developers: 1322 1323 * The most important changes are that the ip6_output() and 1324 ip6_input() paths no longer take the IN6_MULTI_LOCK, 1325 and this lock has been downgraded to a non-recursive mutex. 1326 1327 * As with the changes to the IPv4 stack to support SSM, filtering 1328 of inbound multicast traffic must now be performed by transport 1329 protocols within the IPv6 stack. This does not apply to TCP and 1330 SCTP, however, it does apply to UDP in IPv6 and raw IPv6. 1331 1332 * The KPIs used by IPv6 multicast are similar to those used by 1333 the IPv4 stack, with the following differences: 1334 * im6o_mc_filter() is analogous to imo_multicast_filter(). 1335 * The legacy KAME entry points in6_joingroup and in6_leavegroup() 1336 are shimmed to in6_mc_join() and in6_mc_leave() respectively. 1337 * IN6_LOOKUP_MULTI() has been deprecated and removed. 1338 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs 1339 for MLDv1 have an additional 'timer' argument which is used to 1340 jitter the initial membership report for the solicited-node 1341 multicast membership on-link. 1342 * This is not strictly needed for MLDv2, which already jitters 1343 its report transmissions. However, the 'timer' argument is 1344 preserved in case MLDv1 is active on the interface. 1345 1346 * The KAME linked-list based IPv6 membership implementation has 1347 been refactored to use a vector similar to that used by the IPv4 1348 stack. 1349 Code which maintains a list of its own multicast memberships 1350 internally, e.g. carp, has been updated to reflect the new 1351 semantics. 1352 1353 * There is a known Lock Order Reversal (LOR) due to in6_setscope() 1354 acquiring the IF_AFDATA_LOCK and being called within ip6_output(). 1355 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an 1356 implementation constraint which needs to be addressed in HEAD. 1357 1358 For application developers: 1359 1360 * The changes are broadly similar to those made for the IPv4 1361 stack. 1362 1363 * The use of IPv4 and IPv6 multicast socket options on the same 1364 socket, using mapped addresses, HAS NOT been tested or supported. 1365 1366 * There are a number of issues with the implementation of various 1367 IPv6 multicast APIs which need to be resolved in the API surface 1368 before the implementation is fully compatible with KAME userland 1369 use, and these are mostly to do with interface index treatment. 1370 1371 * The literature available discusses the use of either the delta / ASM 1372 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API 1373 using setsourcefilter(3)/getsourcefilter(3). For more information 1374 please refer to RFC 3768, 'Socket Interface Extensions for 1375 Multicast Source Filters'. 1376 1377 * Applications which use the published RFC 3678 APIs should be fine. 1378 1379 For systems administrators: 1380 1381 * The mtest(8) utility has been refactored to support IPv6, in 1382 addition to IPv4. Interface addresses are no longer accepted 1383 as arguments, their names must be used instead. The utility 1384 will map the interface name to its first IPv4 address as 1385 returned by getifaddrs(3). 1386 1387 * The ifmcstat(8) utility has also been updated to print the MLDv2 1388 endpoint state and source filter lists via sysctl(3). 1389 1390 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable 1391 loopback of IPv6 multicast datagrams by default; it defaults to 1 1392 to preserve the existing behaviour. Disabling multicast loopback is 1393 recommended for optimal system performance. 1394 1395 * The IPv6 MROUTING code has been changed to examine this sysctl 1396 instead of attempting to perform a group lookup before looping 1397 back forwarded datagrams. 1398 1399 Bump __FreeBSD_version to 800084. 1400 140120090422: 1402 Implement low-level Bluetooth HCI API. 1403 Bump __FreeBSD_version to 800083. 1404 140520090419: 1406 The layout of struct malloc_type, used by modules to register new 1407 memory allocation types, has changed. Most modules will need to 1408 be rebuilt or panics may be experienced. 1409 Bump __FreeBSD_version to 800081. 1410 141120090415: 1412 Anticipate overflowing inp_flags - add inp_flags2. 1413 This changes most offsets in inpcb, so checking v4 connection 1414 state will require a world rebuild. 1415 Bump __FreeBSD_version to 800080. 1416 141720090415: 1418 Add an llentry to struct route and struct route_in6. Modules 1419 embedding a struct route will need to be recompiled. 1420 Bump __FreeBSD_version to 800079. 1421 142220090414: 1423 The size of rt_metrics_lite and by extension rtentry has changed. 1424 Networking administration apps will need to be recompiled. 1425 The route command now supports show as an alias for get, weighting 1426 of routes, sticky and nostick flags to alter the behavior of stateful 1427 load balancing. 1428 Bump __FreeBSD_version to 800078. 1429 143020090408: 1431 Do not use Giant for kbdmux(4) locking. This is wrong and 1432 apparently causing more problems than it solves. This will 1433 re-open the issue where interrupt handlers may race with 1434 kbdmux(4) in polling mode. Typical symptoms include (but 1435 not limited to) duplicated and/or missing characters when 1436 low level console functions (such as gets) are used while 1437 interrupts are enabled (for example geli password prompt, 1438 mountroot prompt etc.). Disabling kbdmux(4) may help. 1439 144020090407: 1441 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed; 1442 kernel modules referencing any of the above need to be recompiled. 1443 Bump __FreeBSD_version to 800075. 1444 144520090320: 1446 GEOM_PART has become the default partition slicer for storage devices, 1447 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It 1448 introduces some changes: 1449 1450 MSDOS/EBR: the devices created from MSDOS extended partition entries 1451 (EBR) can be named differently than with GEOM_MBR and are now symlinks 1452 to devices with offset-based names. fstabs may need to be modified. 1453 1454 BSD: the "geometry does not match label" warning is harmless in most 1455 cases but it points to problems in file system misalignment with 1456 disk geometry. The "c" partition is now implicit, covers the whole 1457 top-level drive and cannot be (mis)used by users. 1458 1459 General: Kernel dumps are now not allowed to be written to devices 1460 whose partition types indicate they are meant to be used for file 1461 systems (or, in case of MSDOS partitions, as something else than 1462 the "386BSD" type). 1463 1464 Most of these changes date approximately from 200812. 1465 146620090319: 1467 The uscanner(4) driver has been removed from the kernel. This follows 1468 Linux removing theirs in 2.6 and making libusb the default interface 1469 (supported by sane). 1470 147120090319: 1472 The multicast forwarding code has been cleaned up. netstat(1) 1473 only relies on KVM now for printing bandwidth upcall meters. 1474 The IPv4 and IPv6 modules are split into ip_mroute_mod and 1475 ip6_mroute_mod respectively. The config(5) options for statically 1476 compiling this code remain the same, i.e. 'options MROUTING'. 1477 147820090315: 1479 Support for the IFF_NEEDSGIANT network interface flag has been 1480 removed, which means that non-MPSAFE network device drivers are no 1481 longer supported. In particular, if_ar, if_sr, and network device 1482 drivers from the old (legacy) USB stack can no longer be built or 1483 used. 1484 148520090313: 1486 POSIX.1 Native Language Support (NLS) has been enabled in libc and 1487 a bunch of new language catalog files have also been added. 1488 This means that some common libc messages are now localized and 1489 they depend on the LC_MESSAGES environmental variable. 1490 149120090313: 1492 The k8temp(4) driver has been renamed to amdtemp(4) since 1493 support for Family 10 and Family 11 CPU families was added. 1494 149520090309: 1496 IGMPv3 and Source-Specific Multicast (SSM) have been merged 1497 to the IPv4 stack. VIMAGE hooks are in but not yet used. 1498 1499 For kernel developers, the most important changes are that the 1500 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(), 1501 and this lock has been downgraded to a non-recursive mutex. 1502 1503 Transport protocols (UDP, Raw IP) are now responsible for filtering 1504 inbound multicast traffic according to group membership and source 1505 filters. The imo_multicast_filter() KPI exists for this purpose. 1506 Transports which do not use multicast (SCTP, TCP) already reject 1507 multicast by default. Forwarding and receive performance may improve 1508 as a mutex acquisition is no longer needed in the ip_input() 1509 low-level input path. in_addmulti() and in_delmulti() are shimmed 1510 to new KPIs which exist to support SSM in-kernel. 1511 1512 For application developers, it is recommended that loopback of 1513 multicast datagrams be disabled for best performance, as this 1514 will still cause the lock to be taken for each looped-back 1515 datagram transmission. The net.inet.ip.mcast.loop sysctl may 1516 be tuned to 0 to disable loopback by default; it defaults to 1 1517 to preserve the existing behaviour. 1518 1519 For systems administrators, to obtain best performance with 1520 multicast reception and multiple groups, it is always recommended 1521 that a card with a suitably precise hash filter is used. Hash 1522 collisions will still result in the lock being taken within the 1523 transport protocol input path to check group membership. 1524 1525 If deploying FreeBSD in an environment with IGMP snooping switches, 1526 it is recommended that the net.inet.igmp.sendlocal sysctl remain 1527 enabled; this forces 224.0.0.0/24 group membership to be announced 1528 via IGMP. 1529 1530 The size of 'struct igmpstat' has changed; netstat needs to be 1531 recompiled to reflect this. 1532 Bump __FreeBSD_version to 800070. 1533 153420090309: 1535 libusb20.so.1 is now installed as libusb.so.1 and the ports system 1536 updated to use it. This requires a buildworld/installworld in order to 1537 update the library and dependencies (usbconfig, etc). Its advisable to 1538 rebuild all ports which uses libusb. More specific directions are given 1539 in the ports collection UPDATING file. Any /etc/libmap.conf entries for 1540 libusb are no longer required and can be removed. 1541 154220090302: 1543 A workaround is committed to allow the creation of System V shared 1544 memory segment of size > 2 GB on the 64-bit architectures. 1545 Due to a limitation of the existing ABI, the shm_segsz member 1546 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is 1547 wrong for large segments. Note that limits must be explicitly 1548 raised to allow such segments to be created. 1549 155020090301: 1551 The layout of struct ifnet has changed, requiring a rebuild of all 1552 network device driver modules. 1553 155420090227: 1555 The /dev handling for the new USB stack has changed, a 1556 buildworld/installworld is required for libusb20. 1557 155820090223: 1559 The new USB2 stack has now been permanently moved in and all kernel and 1560 module names reverted to their previous values (eg, usb, ehci, ohci, 1561 ums, ...). The old usb stack can be compiled in by prefixing the name 1562 with the letter 'o', the old usb modules have been removed. 1563 Updating entry 20090216 for xorg and 20090215 for libmap may still 1564 apply. 1565 156620090217: 1567 The rc.conf(5) option if_up_delay has been renamed to 1568 defaultroute_delay to better reflect its purpose. If you have 1569 customized this setting in /etc/rc.conf you need to update it to 1570 use the new name. 1571 157220090216: 1573 xorg 7.4 wants to configure its input devices via hald which does not 1574 yet work with USB2. If the keyboard/mouse does not work in xorg then 1575 add 1576 Option "AllowEmptyInput" "off" 1577 to your ServerLayout section. This will cause X to use the configured 1578 kbd and mouse sections from your xorg.conf. 1579 158020090215: 1581 The GENERIC kernels for all architectures now default to the new USB2 1582 stack. No kernel config options or code have been removed so if a 1583 problem arises please report it and optionally revert to the old USB 1584 stack. If you are loading USB kernel modules or have a custom kernel 1585 that includes GENERIC then ensure that usb names are also changed over, 1586 eg uftdi -> usb2_serial_ftdi. 1587 1588 Older programs linked against the ports libusb 0.1 need to be 1589 redirected to the new stack's libusb20. /etc/libmap.conf can 1590 be used for this: 1591 # Map old usb library to new one for usb2 stack 1592 libusb-0.1.so.8 libusb20.so.1 1593 159420090209: 1595 All USB ethernet devices now attach as interfaces under the name ueN 1596 (eg. ue0). This is to provide a predictable name as vendors often 1597 change usb chipsets in a product without notice. 1598 159920090203: 1600 The ichsmb(4) driver has been changed to require SMBus slave 1601 addresses be left-justified (xxxxxxx0b) rather than right-justified. 1602 All of the other SMBus controller drivers require left-justified 1603 slave addresses, so this change makes all the drivers provide the 1604 same interface. 1605 160620090201: 1607 INET6 statistics (struct ip6stat) was updated. 1608 netstat(1) needs to be recompiled. 1609 161020090119: 1611 NTFS has been removed from GENERIC kernel on amd64 to match 1612 GENERIC on i386. Should not cause any issues since mount_ntfs(8) 1613 will load ntfs.ko module automatically when NTFS support is 1614 actually needed, unless ntfs.ko is not installed or security 1615 level prohibits loading kernel modules. If either is the case, 1616 "options NTFS" has to be added into kernel config. 1617 161820090115: 1619 TCP Appropriate Byte Counting (RFC 3465) support added to kernel. 1620 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to 1621 800061. User space tools that rely on the size of struct tcpcb in 1622 tcp_var.h (e.g. sockstat) need to be recompiled. 1623 162420081225: 1625 ng_tty(4) module updated to match the new TTY subsystem. 1626 Due to API change, user-level applications must be updated. 1627 New API support added to mpd5 CVS and expected to be present 1628 in next mpd5.3 release. 1629 163020081219: 1631 With __FreeBSD_version 800060 the makefs tool is part of 1632 the base system (it was a port). 1633 163420081216: 1635 The afdata and ifnet locks have been changed from mutexes to 1636 rwlocks, network modules will need to be re-compiled. 1637 163820081214: 1639 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite. 1640 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated. 1641 The new code reduced struct rtentry{} by 16 bytes on 32-bit 1642 architecture and 40 bytes on 64-bit architecture. The userland 1643 applications "arp" and "ndp" have been updated accordingly. 1644 The output from "netstat -r" shows only routing entries and 1645 none of the L2 information. 1646 164720081130: 1648 __FreeBSD_version 800057 marks the switchover from the 1649 binary ath hal to source code. Users must add the line: 1650 1651 options AH_SUPPORT_AR5416 1652 1653 to their kernel config files when specifying: 1654 1655 device ath_hal 1656 1657 The ath_hal module no longer exists; the code is now compiled 1658 together with the driver in the ath module. It is now 1659 possible to tailor chip support (i.e. reduce the set of chips 1660 and thereby the code size); consult ath_hal(4) for details. 1661 166220081121: 1663 __FreeBSD_version 800054 adds memory barriers to 1664 <machine/atomic.h>, new interfaces to ifnet to facilitate 1665 multiple hardware transmit queues for cards that support 1666 them, and a lock-less ring-buffer implementation to 1667 enable drivers to more efficiently manage queueing of 1668 packets. 1669 167020081117: 1671 A new version of ZFS (version 13) has been merged to -HEAD. 1672 This version has zpool attribute "listsnapshots" off by 1673 default, which means "zfs list" does not show snapshots, 1674 and is the same as Solaris behavior. 1675 167620081028: 1677 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled. 1678 167920081009: 1680 The uhci, ohci, ehci and slhci USB Host controller drivers have 1681 been put into separate modules. If you load the usb module 1682 separately through loader.conf you will need to load the 1683 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0 1684 controller add the following to loader.conf: 1685 1686 uhci_load="YES" 1687 ehci_load="YES" 1688 168920081009: 1690 The ABI used by the PMC toolset has changed. Please keep 1691 userland (libpmc(3)) and the kernel module (hwpmc(4)) in 1692 sync. 1693 169420081009: 1695 atapci kernel module now includes only generic PCI ATA 1696 driver. AHCI driver moved to ataahci kernel module. 1697 All vendor-specific code moved into separate kernel modules: 1698 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek, 1699 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron, 1700 atamarvell, atamicron, atanational, atanetcell, atanvidia, 1701 atapromise, ataserverworks, atasiliconimage, atasis, atavia 1702 170320080820: 1704 The TTY subsystem of the kernel has been replaced by a new 1705 implementation, which provides better scalability and an 1706 improved driver model. Most common drivers have been migrated to 1707 the new TTY subsystem, while others have not. The following 1708 drivers have not yet been ported to the new TTY layer: 1709 1710 PCI/ISA: 1711 cy, digi, rc, rp, sio 1712 1713 USB: 1714 ubser, ucycom 1715 1716 Line disciplines: 1717 ng_h4, ng_tty, ppp, sl, snp 1718 1719 Adding these drivers to your kernel configuration file shall 1720 cause compilation to fail. 1721 172220080818: 1723 ntpd has been upgraded to 4.2.4p5. 1724 172520080801: 1726 OpenSSH has been upgraded to 5.1p1. 1727 1728 For many years, FreeBSD's version of OpenSSH preferred DSA 1729 over RSA for host and user authentication keys. With this 1730 upgrade, we've switched to the vendor's default of RSA over 1731 DSA. This may cause upgraded clients to warn about unknown 1732 host keys even for previously known hosts. Users should 1733 follow the usual procedure for verifying host keys before 1734 accepting the RSA key. 1735 1736 This can be circumvented by setting the "HostKeyAlgorithms" 1737 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh 1738 command line. 1739 1740 Please note that the sequence of keys offered for 1741 authentication has been changed as well. You may want to 1742 specify IdentityFile in a different order to revert this 1743 behavior. 1744 174520080713: 1746 The sio(4) driver has been removed from the i386 and amd64 1747 kernel configuration files. This means uart(4) is now the 1748 default serial port driver on those platforms as well. 1749 1750 To prevent collisions with the sio(4) driver, the uart(4) driver 1751 uses different names for its device nodes. This means the 1752 onboard serial port will now most likely be called "ttyu0" 1753 instead of "ttyd0". You may need to reconfigure applications to 1754 use the new device names. 1755 1756 When using the serial port as a boot console, be sure to update 1757 /boot/device.hints and /etc/ttys before booting the new kernel. 1758 If you forget to do so, you can still manually specify the hints 1759 at the loader prompt: 1760 1761 set hint.uart.0.at="isa" 1762 set hint.uart.0.port="0x3F8" 1763 set hint.uart.0.flags="0x10" 1764 set hint.uart.0.irq="4" 1765 boot -s 1766 176720080609: 1768 The gpt(8) utility has been removed. Use gpart(8) to partition 1769 disks instead. 1770 177120080603: 1772 The version that Linuxulator emulates was changed from 2.4.2 1773 to 2.6.16. If you experience any problems with Linux binaries 1774 please try to set sysctl compat.linux.osrelease to 2.4.2 and 1775 if it fixes the problem contact emulation mailing list. 1776 177720080525: 1778 ISDN4BSD (I4B) was removed from the src tree. You may need to 1779 update a your kernel configuration and remove relevant entries. 1780 178120080509: 1782 I have checked in code to support multiple routing tables. 1783 See the man pages setfib(1) and setfib(2). 1784 This is a hopefully backwards compatible version, 1785 but to make use of it you need to compile your kernel 1786 with options ROUTETABLES=2 (or more up to 16). 1787 178820080420: 1789 The 802.11 wireless support was redone to enable multi-bss 1790 operation on devices that are capable. The underlying device 1791 is no longer used directly but instead wlanX devices are 1792 cloned with ifconfig. This requires changes to rc.conf files. 1793 For example, change: 1794 ifconfig_ath0="WPA DHCP" 1795 to 1796 wlans_ath0=wlan0 1797 ifconfig_wlan0="WPA DHCP" 1798 see rc.conf(5) for more details. In addition, mergemaster of 1799 /etc/rc.d is highly recommended. Simultaneous update of userland 1800 and kernel wouldn't hurt either. 1801 1802 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta 1803 modules were merged into the base wlan module. All references 1804 to these modules (e.g. in kernel config files) must be removed. 1805 180620080408: 1807 psm(4) has gained write(2) support in native operation level. 1808 Arbitrary commands can be written to /dev/psm%d and status can 1809 be read back from it. Therefore, an application is responsible 1810 for status validation and error recovery. It is a no-op in 1811 other operation levels. 1812 181320080312: 1814 Support for KSE threading has been removed from the kernel. To 1815 run legacy applications linked against KSE libmap.conf may 1816 be used. The following libmap.conf may be used to ensure 1817 compatibility with any prior release: 1818 1819 libpthread.so.1 libthr.so.1 1820 libpthread.so.2 libthr.so.2 1821 libkse.so.3 libthr.so.3 1822 182320080301: 1824 The layout of struct vmspace has changed. This affects libkvm 1825 and any executables that link against libkvm and use the 1826 kvm_getprocs() function. In particular, but not exclusively, 1827 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1). 1828 The effects are minimal, but it's advisable to upgrade world 1829 nonetheless. 1830 183120080229: 1832 The latest em driver no longer has support in it for the 1833 82575 adapter, this is now moved to the igb driver. The 1834 split was done to make new features that are incompatible 1835 with older hardware easier to do. 1836 183720080220: 1838 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4), 1839 likewise the kernel option is now GEOM_LINUX_LVM. 1840 184120080211: 1842 The default NFS mount mode has changed from UDP to TCP for 1843 increased reliability. If you rely on (insecurely) NFS 1844 mounting across a firewall you may need to update your 1845 firewall rules. 1846 184720080208: 1848 Belatedly note the addition of m_collapse for compacting 1849 mbuf chains. 1850 185120080126: 1852 The fts(3) structures have been changed to use adequate 1853 integer types for their members and so to be able to cope 1854 with huge file trees. The old fts(3) ABI is preserved 1855 through symbol versioning in libc, so third-party binaries 1856 using fts(3) should still work, although they will not take 1857 advantage of the extended types. At the same time, some 1858 third-party software might fail to build after this change 1859 due to unportable assumptions made in its source code about 1860 fts(3) structure members. Such software should be fixed 1861 by its vendor or, in the worst case, in the ports tree. 1862 FreeBSD_version 800015 marks this change for the unlikely 1863 case that a portable fix is impossible. 1864 186520080123: 1866 To upgrade to -current after this date, you must be running 1867 FreeBSD not older than 6.0-RELEASE. Upgrading to -current 1868 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems. 1869 187020071128: 1871 The ADAPTIVE_GIANT kernel option has been retired because its 1872 functionality is the default now. 1873 187420071118: 1875 The AT keyboard emulation of sunkbd(4) has been turned on 1876 by default. In order to make the special symbols of the Sun 1877 keyboards driven by sunkbd(4) work under X these now have 1878 to be configured the same way as Sun USB keyboards driven 1879 by ukbd(4) (which also does AT keyboard emulation), f.e.: 1880 1881 Option "XkbLayout" "us" 1882 Option "XkbRules" "xorg" 1883 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us" 1884 188520071024: 1886 It has been decided that it is desirable to provide ABI 1887 backwards compatibility to the FreeBSD 4/5/6 versions of the 1888 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was 1889 broken with the introduction of PCI domain support (see the 1890 20070930 entry). Unfortunately, this required the ABI of 1891 PCIOCGETCONF to be broken again in order to be able to 1892 provide backwards compatibility to the old version of that 1893 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled 1894 again. As for prominent ports this affects neither pciutils 1895 nor xorg-server this time, the hal port needs to be rebuilt 1896 however. 1897 189820071020: 1899 The misnamed kthread_create() and friends have been renamed 1900 to kproc_create() etc. Many of the callers already 1901 used kproc_start().. 1902 I will return kthread_create() and friends in a while 1903 with implementations that actually create threads, not procs. 1904 Renaming corresponds with version 800002. 1905 190620071010: 1907 RELENG_7 branched. 1908 1909COMMON ITEMS: 1910 1911 General Notes 1912 ------------- 1913 Avoid using make -j when upgrading. While generally safe, there are 1914 sometimes problems using -j to upgrade. If your upgrade fails with 1915 -j, please try again without -j. From time to time in the past there 1916 have been problems using -j with buildworld and/or installworld. This 1917 is especially true when upgrading between "distant" versions (eg one 1918 that cross a major release boundary or several minor releases, or when 1919 several months have passed on the -current branch). 1920 1921 Sometimes, obscure build problems are the result of environment 1922 poisoning. This can happen because the make utility reads its 1923 environment when searching for values for global variables. To run 1924 your build attempts in an "environmental clean room", prefix all make 1925 commands with 'env -i '. See the env(1) manual page for more details. 1926 1927 When upgrading from one major version to another it is generally best 1928 to upgrade to the latest code in the currently installed branch first, 1929 then do an upgrade to the new branch. This is the best-tested upgrade 1930 path, and has the highest probability of being successful. Please try 1931 this approach before reporting problems with a major version upgrade. 1932 1933 When upgrading a live system, having a root shell around before 1934 installing anything can help undo problems. Not having a root shell 1935 around can lead to problems if pam has changed too much from your 1936 starting point to allow continued authentication after the upgrade. 1937 1938 ZFS notes 1939 --------- 1940 When upgrading the boot ZFS pool to a new version, always follow 1941 these two steps: 1942 1943 1.) recompile and reinstall the ZFS boot loader and boot block 1944 (this is part of "make buildworld" and "make installworld") 1945 1946 2.) update the ZFS boot block on your boot drive 1947 1948 The following example updates the ZFS boot block on the first 1949 partition (freebsd-boot) of a GPT partitioned drive ad0: 1950 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0" 1951 1952 Non-boot pools do not need these updates. 1953 1954 To build a kernel 1955 ----------------- 1956 If you are updating from a prior version of FreeBSD (even one just 1957 a few days old), you should follow this procedure. It is the most 1958 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld, 1959 1960 make kernel-toolchain 1961 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE 1962 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE 1963 1964 To test a kernel once 1965 --------------------- 1966 If you just want to boot a kernel once (because you are not sure 1967 if it works, or if you want to boot a known bad kernel to provide 1968 debugging information) run 1969 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel 1970 nextboot -k testkernel 1971 1972 To just build a kernel when you know that it won't mess you up 1973 -------------------------------------------------------------- 1974 This assumes you are already running a CURRENT system. Replace 1975 ${arch} with the architecture of your machine (e.g. "i386", 1976 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc). 1977 1978 cd src/sys/${arch}/conf 1979 config KERNEL_NAME_HERE 1980 cd ../compile/KERNEL_NAME_HERE 1981 make depend 1982 make 1983 make install 1984 1985 If this fails, go to the "To build a kernel" section. 1986 1987 To rebuild everything and install it on the current system. 1988 ----------------------------------------------------------- 1989 # Note: sometimes if you are running current you gotta do more than 1990 # is listed here if you are upgrading from a really old current. 1991 1992 <make sure you have good level 0 dumps> 1993 make buildworld 1994 make kernel KERNCONF=YOUR_KERNEL_HERE 1995 [1] 1996 <reboot in single user> [3] 1997 mergemaster -Fp [5] 1998 make installworld 1999 mergemaster -Fi [4] 2000 make delete-old [6] 2001 <reboot> 2002 2003 To cross-install current onto a separate partition 2004 -------------------------------------------------- 2005 # In this approach we use a separate partition to hold 2006 # current's root, 'usr', and 'var' directories. A partition 2007 # holding "/", "/usr" and "/var" should be about 2GB in 2008 # size. 2009 2010 <make sure you have good level 0 dumps> 2011 <boot into -stable> 2012 make buildworld 2013 make buildkernel KERNCONF=YOUR_KERNEL_HERE 2014 <maybe newfs current's root partition> 2015 <mount current's root partition on directory ${CURRENT_ROOT}> 2016 make installworld DESTDIR=${CURRENT_ROOT} -DDB_FROM_SRC 2017 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd 2018 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT} 2019 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd 2020 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition> 2021 <reboot into current> 2022 <do a "native" rebuild/install as described in the previous section> 2023 <maybe install compatibility libraries from ports/misc/compat*> 2024 <reboot> 2025 2026 2027 To upgrade in-place from stable to current 2028 ---------------------------------------------- 2029 <make sure you have good level 0 dumps> 2030 make buildworld [9] 2031 make kernel KERNCONF=YOUR_KERNEL_HERE [8] 2032 [1] 2033 <reboot in single user> [3] 2034 mergemaster -Fp [5] 2035 make installworld 2036 mergemaster -Fi [4] 2037 make delete-old [6] 2038 <reboot> 2039 2040 Make sure that you've read the UPDATING file to understand the 2041 tweaks to various things you need. At this point in the life 2042 cycle of current, things change often and you are on your own 2043 to cope. The defaults can also change, so please read ALL of 2044 the UPDATING entries. 2045 2046 Also, if you are tracking -current, you must be subscribed to 2047 freebsd-current@freebsd.org. Make sure that before you update 2048 your sources that you have read and understood all the recent 2049 messages there. If in doubt, please track -stable which has 2050 much fewer pitfalls. 2051 2052 [1] If you have third party modules, such as vmware, you 2053 should disable them at this point so they don't crash your 2054 system on reboot. 2055 2056 [3] From the bootblocks, boot -s, and then do 2057 fsck -p 2058 mount -u / 2059 mount -a 2060 cd src 2061 adjkerntz -i # if CMOS is wall time 2062 Also, when doing a major release upgrade, it is required that 2063 you boot into single user mode to do the installworld. 2064 2065 [4] Note: This step is non-optional. Failure to do this step 2066 can result in a significant reduction in the functionality of the 2067 system. Attempting to do it by hand is not recommended and those 2068 that pursue this avenue should read this file carefully, as well 2069 as the archives of freebsd-current and freebsd-hackers mailing lists 2070 for potential gotchas. The -U option is also useful to consider. 2071 See mergemaster(8) for more information. 2072 2073 [5] Usually this step is a noop. However, from time to time 2074 you may need to do this if you get unknown user in the following 2075 step. It never hurts to do it all the time. You may need to 2076 install a new mergemaster (cd src/usr.sbin/mergemaster && make 2077 install) after the buildworld before this step if you last updated 2078 from current before 20130425 or from -stable before 20130430. 2079 2080 [6] This only deletes old files and directories. Old libraries 2081 can be deleted by "make delete-old-libs", but you have to make 2082 sure that no program is using those libraries anymore. 2083 2084 [8] In order to have a kernel that can run the 4.x binaries needed to 2085 do an installworld, you must include the COMPAT_FREEBSD4 option in 2086 your kernel. Failure to do so may leave you with a system that is 2087 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is 2088 required to run the 5.x binaries on more recent kernels. And so on 2089 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7. 2090 2091 Make sure that you merge any new devices from GENERIC since the 2092 last time you updated your kernel config file. 2093 2094 [9] When checking out sources, you must include the -P flag to have 2095 cvs prune empty directories. 2096 2097 If CPUTYPE is defined in your /etc/make.conf, make sure to use the 2098 "?=" instead of the "=" assignment operator, so that buildworld can 2099 override the CPUTYPE if it needs to. 2100 2101 MAKEOBJDIRPREFIX must be defined in an environment variable, and 2102 not on the command line, or in /etc/make.conf. buildworld will 2103 warn if it is improperly defined. 2104FORMAT: 2105 2106This file contains a list, in reverse chronological order, of major 2107breakages in tracking -current. It is not guaranteed to be a complete 2108list of such breakages, and only contains entries since October 10, 2007. 2109If you need to see UPDATING entries from before that date, you will need 2110to fetch an UPDATING file from an older FreeBSD release. 2111 2112Copyright information: 2113 2114Copyright 1998-2009 M. Warner Losh. All Rights Reserved. 2115 2116Redistribution, publication, translation and use, with or without 2117modification, in full or in part, in any form or format of this 2118document are permitted without further permission from the author. 2119 2120THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR 2121IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 2122WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 2123DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT, 2124INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 2125(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 2126SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2127HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 2128STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 2129IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 2130POSSIBILITY OF SUCH DAMAGE. 2131 2132Contact Warner Losh if you have any questions about your use of 2133this document. 2134 2135$FreeBSD$ 2136