UPDATING revision 282275
1Updating Information for FreeBSD current users 2 3This file is maintained and copyrighted by M. Warner Losh <imp@freebsd.org>. 4See end of file for further details. For commonly done items, please see the 5COMMON ITEMS: section later in the file. These instructions assume that you 6basically know what you are doing. If not, then please consult the FreeBSD 7handbook: 8 9 http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html 10 11Items affecting the ports and packages system can be found in 12/usr/ports/UPDATING. Please read that file before running portupgrade. 13 14NOTE: FreeBSD has switched from gcc to clang. If you have trouble bootstrapping 15from older versions of FreeBSD, try WITHOUT_CLANG to bootstrap to the tip of 16stable/10, and then rebuild without this option. The bootstrap process from 17older version of current is a bit fragile. 18 1920150430: 20 The const qualifier has been removed from iconv(3) to comply with 21 POSIX. The ports tree is aware of this from r384038 onwards. 22 2320141215: 24 At svn r275807, The default linux compat kernel ABI has been adjusted 25 to 2.6.18 in support of the linux-c6 compat ports infrastructure 26 update. If you wish to continue using the linux-f10 compat ports, 27 add compat.linux.osrelease=2.6.16 to your local sysctl.conf. Users are 28 encouraged to update their linux-compat packages to linux-c6 during 29 their next update cycle. 30 31 See ports/UPDATING 20141209 and 20141215 on migration to CentOS 6 ports. 32 3320141205: 34 pjdfstest has been integrated into kyua as an opt-in test suite. 35 Please see share/doc/pjdfstest/README for a more details on how to 36 execute it. 37 3820141118: 39 10.1-RELEASE. 40 4120140904: 42 The ofwfb driver, used to provide a graphics console on PowerPC when 43 using vt(4), no longer allows mmap() of all of physical memory. This 44 will prevent Xorg on PowerPC with some ATI graphics cards from 45 initializing properly unless x11-servers/xorg-server is updated to 46 1.12.4_8 or newer. 47 4820140831: 49 The libatf-c and libatf-c++ major versions were downgraded to 0 and 50 1 respectively to match the upstream numbers. They were out of 51 sync because, when they were originally added to FreeBSD, the 52 upstream versions were not respected. These libraries are private 53 and not yet built by default, so renumbering them should be a 54 non-issue. However, unclean source trees will yield broken test 55 programs once the operator executes "make delete-old-libs" after a 56 "make installworld". 57 58 Additionally, the atf-sh binary was made private by moving it into 59 /usr/libexec/. Already-built shell test programs will keep the 60 path to the old binary so they will break after "make delete-old" 61 is run. 62 63 If you are using WITH_TESTS=yes (not the default), wipe the object 64 tree and rebuild from scratch to prevent spurious test failures. 65 This is only needed once: the misnumbered libraries and misplaced 66 binaries have been added to OptionalObsoleteFiles.inc so they will 67 be removed during a clean upgrade. 68 6920140814: 70 The ixgbe tunables now match their sysctl counterparts, for example: 71 hw.ixgbe.enable_aim => hw.ix.enable_aim 72 Anyone using ixgbe tunables should ensure they update /boot/loader.conf. 73 7420140801: 75 The NFSv4.1 server committed by r269398 changes the internal 76 function call interfaces used between the NFS and krpc modules. 77 As such, __FreeBSD_version was bumped. 78 7920140729: 80 The default unbound configuration has been modified to address 81 issues with reverse lookups on networks that use private 82 address ranges. If you use the local_unbound service, run 83 "service local_unbound setup" as root to regenerate your 84 configuration, then "service local_unbound reload" to load the 85 new configuration. 86 8720140717: 88 It is no longer necessary to include the dwarf version in your DEBUG 89 options in your kernel config file. The bug that required it to be 90 placed in the config file has bene fixed. DEBUG should now just 91 contain -g. The build system will automatically update things 92 to do the right thing. 93 9420140715: 95 Several ABI breaking changes were merged to CTL and new iSCSI code. 96 All CTL and iSCSI-related tools, such as ctladm, ctld, iscsid and 97 iscsictl need to be rebuilt to work with a new kernel. 98 9920140708: 100 The WITHOUT_VT_SUPPORT kernel config knob has been renamed 101 WITHOUT_VT. (The other _SUPPORT knobs have a consistent meaning 102 which differs from the behaviour controlled by this knob.) 103 10420140608: 105 On i386 and amd64 systems, the onifconsole flag is now set by default 106 in /etc/ttys for ttyu0. This causes ttyu0 to be automatically enabled 107 as a login TTY if it is set in the bootloader as an active kernel 108 console. No changes in behavior should result otherwise. To revert to 109 the previous behavior, set ttyu0 to "off" in /etc/ttys. 110 11120140512: 112 Clang and llvm have been upgraded to 3.4.1 release. 113 11420140321: 115 Clang and llvm have been upgraded to 3.4 release. 116 11720140306: 118 If a Makefile in a tests/ directory was auto-generating a Kyuafile 119 instead of providing an explicit one, this would prevent such 120 Makefile from providing its own Kyuafile in the future during 121 NO_CLEAN builds. This has been fixed in the Makefiles but manual 122 intervention is needed to clean an objdir if you use NO_CLEAN: 123 # find /usr/obj -name Kyuafile | xargs rm -f 124 12520140303: 126 OpenSSH will now ignore errors caused by kernel lacking of Capsicum 127 capability mode support. Please note that enabling the feature in 128 kernel is still highly recommended. 129 13020140227: 131 OpenSSH is now built with sandbox support, and will use sandbox as 132 the default privilege separation method. This requires Capsicum 133 capability mode support in kernel. 134 13520140216: 136 The nve(4) driver for NVIDIA nForce MCP Ethernet adapters has 137 been deprecated and will not be part of FreeBSD 11.0 and later 138 releases. If you use this driver, please consider switching to 139 the nfe(4) driver instead. 140 14120140120: 142 10.0-RELEASE. 143 14420131216: 145 The behavior of gss_pseudo_random() for the krb5 mechanism 146 has changed, for applications requesting a longer random string 147 than produced by the underlying enctype's pseudo-random() function. 148 In particular, the random string produced from a session key of 149 enctype aes256-cts-hmac-sha1-96 or aes256-cts-hmac-sha1-96 will 150 be different at the 17th octet and later, after this change. 151 The counter used in the PRF+ construction is now encoded as a 152 big-endian integer in accordance with RFC 4402. 153 __FreeBSD_version is bumped to 1000701. 154 15520131108: 156 The WITHOUT_ATF build knob has been removed and its functionality 157 has been subsumed into the more generic WITHOUT_TESTS. If you were 158 using the former to disable the build of the ATF libraries, you 159 should change your settings to use the latter. 160 16120131031: 162 The default version of mtree is nmtree which is obtained from 163 NetBSD. The output is generally the same, but may vary 164 slightly. If you found you need identical output adding 165 "-F freebsd9" to the command line should do the trick. For the 166 time being, the old mtree is available as fmtree. 167 16820131014: 169 libbsdyml has been renamed to libyaml and moved to /usr/lib/private. 170 This will break ports-mgmt/pkg. Rebuild the port, or upgrade to pkg 171 1.1.4_8 and verify bsdyml not linked in, before running "make 172 delete-old-libs": 173 # make -C /usr/ports/ports-mgmt/pkg build deinstall install clean 174 or 175 # pkg install pkg; ldd /usr/local/sbin/pkg | grep bsdyml 176 17720131010: 178 The rc.d/jail script has been updated to support jail(8) 179 configuration file. The "jail_<jname>_*" rc.conf(5) variables 180 for per-jail configuration are automatically converted to 181 /var/run/jail.<jname>.conf before the jail(8) utility is invoked. 182 This is transparently backward compatible. See below about some 183 incompatibilities and rc.conf(5) manual page for more details. 184 185 These variables are now deprecated in favor of jail(8) configuration 186 file. One can use "rc.d/jail config <jname>" command to generate 187 a jail(8) configuration file in /var/run/jail.<jname>.conf without 188 running the jail(8) utility. The default pathname of the 189 configuration file is /etc/jail.conf and can be specified by 190 using $jail_conf or $jail_<jname>_conf variables. 191 192 Please note that jail_devfs_ruleset accepts an integer at 193 this moment. Please consider to rewrite the ruleset name 194 with an integer. 195 19620130930: 197 BIND has been removed from the base system. If all you need 198 is a local resolver, simply enable and start the local_unbound 199 service instead. Otherwise, several versions of BIND are 200 available in the ports tree. The dns/bind99 port is one example. 201 202 With this change, nslookup(1) and dig(1) are no longer in the base 203 system. Users should instead use host(1) and drill(1) which are 204 in the base system. Alternatively, nslookup and dig can 205 be obtained by installing the dns/bind-tools port. 206 20720130916: 208 With the addition of unbound(8), a new unbound user is now 209 required during installworld. "mergemaster -p" can be used to 210 add the user prior to installworld, as documented in the handbook. 211 21220130911: 213 OpenSSH is now built with DNSSEC support, and will by default 214 silently trust signed SSHFP records. This can be controlled with 215 the VerifyHostKeyDNS client configuration setting. DNSSEC support 216 can be disabled entirely with the WITHOUT_LDNS option in src.conf. 217 21820130906: 219 The GNU Compiler Collection and C++ standard library (libstdc++) 220 are no longer built by default on platforms where clang is the system 221 compiler. You can enable them with the WITH_GCC and WITH_GNUCXX 222 options in src.conf. 223 22420130905: 225 The PROCDESC kernel option is now part of the GENERIC kernel 226 configuration and is required for the rwhod(8) to work. 227 If you are using custom kernel configuration, you should include 228 'options PROCDESC'. 229 23020130905: 231 The API and ABI related to the Capsicum framework was modified 232 in backward incompatible way. The userland libraries and programs 233 have to be recompiled to work with the new kernel. This includes the 234 following libraries and programs, but the whole buildworld is 235 advised: libc, libprocstat, dhclient, tcpdump, hastd, hastctl, 236 kdump, procstat, rwho, rwhod, uniq. 237 23820130903: 239 AES-NI intrinsic support has been added to gcc. The AES-NI module 240 has been updated to use this support. A new gcc is required to build 241 the aesni module on both i386 and amd64. 242 24320130821: 244 The PADLOCK_RNG and RDRAND_RNG kernel options are now devices. 245 Thus "device padlock_rng" and "device rdrand_rng" should be 246 used instead of "options PADLOCK_RNG" & "options RDRAND_RNG". 247 24820130813: 249 WITH_ICONV has been split into two feature sets. WITH_ICONV now 250 enables just the iconv* functionality and is now on by default. 251 WITH_LIBICONV_COMPAT enables the libiconv api and link time 252 compatability. Set WITHOUT_ICONV to build the old way. 253 If you have been using WITH_ICONV before, you will very likely 254 need to turn on WITH_LIBICONV_COMPAT. 255 25620130806: 257 INVARIANTS option now enables DEBUG for code with OpenSolaris and 258 Illumos origin, including ZFS. If you have INVARIANTS in your 259 kernel configuration, then there is no need to set DEBUG or ZFS_DEBUG 260 explicitly. 261 DEBUG used to enable witness(9) tracking of OpenSolaris (mostly ZFS) 262 locks if WITNESS option was set. Because that generated a lot of 263 witness(9) reports and all of them were believed to be false 264 positives, this is no longer done. New option OPENSOLARIS_WITNESS 265 can be used to achieve the previous behavior. 266 26720130806: 268 Timer values in IPv6 data structures now use time_uptime instead 269 of time_second. Although this is not a user-visible functional 270 change, userland utilities which directly use them---ndp(8), 271 rtadvd(8), and rtsold(8) in the base system---need to be updated 272 to r253970 or later. 273 27420130802: 275 find -delete can now delete the pathnames given as arguments, 276 instead of only files found below them or if the pathname did 277 not contain any slashes. Formerly, the following error message 278 would result: 279 280 find: -delete: <path>: relative path potentially not safe 281 282 Deleting the pathnames given as arguments can be prevented 283 without error messages using -mindepth 1 or by changing 284 directory and passing "." as argument to find. This works in the 285 old as well as the new version of find. 286 28720130726: 288 Behavior of devfs rules path matching has been changed. 289 Pattern is now always matched against fully qualified devfs 290 path and slash characters must be explicitly matched by 291 slashes in pattern (FNM_PATHNAME). Rulesets involving devfs 292 subdirectories must be reviewed. 293 29420130716: 295 The default ARM ABI has changed to the ARM EABI. The old ABI is 296 incompatible with the ARM EABI and all programs and modules will 297 need to be rebuilt to work with a new kernel. 298 299 To keep using the old ABI ensure the WITHOUT_ARM_EABI knob is set. 300 301 NOTE: Support for the old ABI will be removed in the future and 302 users are advised to upgrade. 303 30420130709: 305 pkg_install has been disconnected from the build if you really need it 306 you should add WITH_PKGTOOLS in your src.conf(5). 307 30820130709: 309 Most of network statistics structures were changed to be able 310 keep 64-bits counters. Thus all tools, that work with networking 311 statistics, must be rebuilt (netstat(1), bsnmpd(1), etc.) 312 31320130629: 314 Fix targets that run multiple make's to use && rather than ; 315 so that subsequent steps depend on success of previous. 316 317 NOTE: if building 'universe' with -j* on stable/8 or stable/9 318 it would be better to start the build using bmake, to avoid 319 overloading the machine. 320 32120130618: 322 Fix a bug that allowed a tracing process (e.g. gdb) to write 323 to a memory-mapped file in the traced process's address space 324 even if neither the traced process nor the tracing process had 325 write access to that file. 326 32720130615: 328 CVS has been removed from the base system. An exact copy 329 of the code is available from the devel/cvs port. 330 33120130613: 332 Some people report the following error after the switch to bmake: 333 334 make: illegal option -- J 335 usage: make [-BPSXeiknpqrstv] [-C directory] [-D variable] 336 ... 337 *** [buildworld] Error code 2 338 339 this likely due to an old instance of make in 340 ${MAKEPATH} (${MAKEOBJDIRPREFIX}${.CURDIR}/make.${MACHINE}) 341 which src/Makefile will use that blindly, if it exists, so if 342 you see the above error: 343 344 rm -rf `make -V MAKEPATH` 345 346 should resolve it. 347 34820130516: 349 Use bmake by default. 350 Whereas before one could choose to build with bmake via 351 -DWITH_BMAKE one must now use -DWITHOUT_BMAKE to use the old 352 make. The goal is to remove these knobs for 10-RELEASE. 353 354 It is worth noting that bmake (like gmake) treats the command 355 line as the unit of failure, rather than statements within the 356 command line. Thus '(cd some/where && dosomething)' is safer 357 than 'cd some/where; dosomething'. The '()' allows consistent 358 behavior in parallel build. 359 36020130429: 361 Fix a bug that allows NFS clients to issue READDIR on files. 362 36320130426: 364 The WITHOUT_IDEA option has been removed because 365 the IDEA patent expired. 366 36720130426: 368 The sysctl which controls TRIM support under ZFS has been renamed 369 from vfs.zfs.trim_disable -> vfs.zfs.trim.enabled and has been 370 enabled by default. 371 37220130425: 373 The mergemaster command now uses the default MAKEOBJDIRPREFIX 374 rather than creating it's own in the temporary directory in 375 order allow access to bootstrapped versions of tools such as 376 install and mtree. When upgrading from version of FreeBSD where 377 the install command does not support -l, you will need to 378 install a new mergemaster command if mergemaster -p is required. 379 This can be accomplished with the command (cd src/usr.sbin/mergemaster 380 && make install). 381 38220130404: 383 Legacy ATA stack, disabled and replaced by new CAM-based one since 384 FreeBSD 9.0, completely removed from the sources. Kernel modules 385 atadisk and atapi*, user-level tools atacontrol and burncd are 386 removed. Kernel option `options ATA_CAM` is now permanently enabled 387 and removed. 388 38920130319: 390 SOCK_CLOEXEC and SOCK_NONBLOCK flags have been added to socket(2) 391 and socketpair(2). Software, in particular Kerberos, may 392 automatically detect and use these during building. The resulting 393 binaries will not work on older kernels. 394 39520130308: 396 CTL_DISABLE has also been added to the sparc64 GENERIC (for further 397 information, see the respective 20130304 entry). 398 39920130304: 400 Recent commits to callout(9) changed the size of struct callout, 401 so the KBI is probably heavily disturbed. Also, some functions 402 in callout(9)/sleep(9)/sleepqueue(9)/condvar(9) KPIs were replaced 403 by macros. Every kernel module using it won't load, so rebuild 404 is requested. 405 406 The ctl device has been re-enabled in GENERIC for i386 and amd64, 407 but does not initialize by default (because of the new CTL_DISABLE 408 option) to save memory. To re-enable it, remove the CTL_DISABLE 409 option from the kernel config file or set kern.cam.ctl.disable=0 410 in /boot/loader.conf. 411 41220130301: 413 The ctl device has been disabled in GENERIC for i386 and amd64. 414 This was done due to the extra memory being allocated at system 415 initialisation time by the ctl driver which was only used if 416 a CAM target device was created. This makes a FreeBSD system 417 unusable on 128MB or less of RAM. 418 41920130208: 420 A new compression method (lz4) has been merged to -HEAD. Please 421 refer to zpool-features(7) for more information. 422 423 Please refer to the "ZFS notes" section of this file for information 424 on upgrading boot ZFS pools. 425 42620130129: 427 A BSD-licensed patch(1) variant has been added and is installed 428 as bsdpatch, being the GNU version the default patch. 429 To inverse the logic and use the BSD-licensed one as default, 430 while having the GNU version installed as gnupatch, rebuild 431 and install world with the WITH_BSD_PATCH knob set. 432 43320130121: 434 Due to the use of the new -l option to install(1) during build 435 and install, you must take care not to directly set the INSTALL 436 make variable in your /etc/make.conf, /etc/src.conf, or on the 437 command line. If you wish to use the -C flag for all installs 438 you may be able to add INSTALL+=-C to /etc/make.conf or 439 /etc/src.conf. 440 44120130118: 442 The install(1) option -M has changed meaning and now takes an 443 argument that is a file or path to append logs to. In the 444 unlikely event that -M was the last option on the command line 445 and the command line contained at least two files and a target 446 directory the first file will have logs appended to it. The -M 447 option served little practical purpose in the last decade so its 448 use is expected to be extremely rare. 449 45020121223: 451 After switching to Clang as the default compiler some users of ZFS 452 on i386 systems started to experience stack overflow kernel panics. 453 Please consider using 'options KSTACK_PAGES=4' in such configurations. 454 45520121222: 456 GEOM_LABEL now mangles label names read from file system metadata. 457 Mangling affect labels containing spaces, non-printable characters, 458 '%' or '"'. Device names in /etc/fstab and other places may need to 459 be updated. 460 46120121217: 462 By default, only the 10 most recent kernel dumps will be saved. To 463 restore the previous behaviour (no limit on the number of kernel dumps 464 stored in the dump directory) add the following line to /etc/rc.conf: 465 466 savecore_flags="" 467 46820121201: 469 With the addition of auditdistd(8), a new auditdistd user is now 470 required during installworld. "mergemaster -p" can be used to 471 add the user prior to installworld, as documented in the handbook. 472 47320121117: 474 The sin6_scope_id member variable in struct sockaddr_in6 is now 475 filled by the kernel before passing the structure to the userland via 476 sysctl or routing socket. This means the KAME-specific embedded scope 477 id in sin6_addr.s6_addr[2] is always cleared in userland application. 478 This behavior can be controlled by net.inet6.ip6.deembed_scopeid. 479 __FreeBSD_version is bumped to 1000025. 480 48120121105: 482 On i386 and amd64 systems WITH_CLANG_IS_CC is now the default. 483 This means that the world and kernel will be compiled with clang 484 and that clang will be installed as /usr/bin/cc, /usr/bin/c++, 485 and /usr/bin/cpp. To disable this behavior and revert to building 486 with gcc, compile with WITHOUT_CLANG_IS_CC. Really old versions 487 of current may need to bootstrap WITHOUT_CLANG first if the clang 488 build fails (its compatibility window doesn't extend to the 9 stable 489 branch point). 490 49120121102: 492 The IPFIREWALL_FORWARD kernel option has been removed. Its 493 functionality now turned on by default. 494 49520121023: 496 The ZERO_COPY_SOCKET kernel option has been removed and 497 split into SOCKET_SEND_COW and SOCKET_RECV_PFLIP. 498 NB: SOCKET_SEND_COW uses the VM page based copy-on-write 499 mechanism which is not safe and may result in kernel crashes. 500 NB: The SOCKET_RECV_PFLIP mechanism is useless as no current 501 driver supports disposeable external page sized mbuf storage. 502 Proper replacements for both zero-copy mechanisms are under 503 consideration and will eventually lead to complete removal 504 of the two kernel options. 505 50620121023: 507 The IPv4 network stack has been converted to network byte 508 order. The following modules need to be recompiled together 509 with kernel: carp(4), divert(4), gif(4), siftr(4), gre(4), 510 pf(4), ipfw(4), ng_ipfw(4), stf(4). 511 51220121022: 513 Support for non-MPSAFE filesystems was removed from VFS. The 514 VFS_VERSION was bumped, all filesystem modules shall be 515 recompiled. 516 51720121018: 518 All the non-MPSAFE filesystems have been disconnected from 519 the build. The full list includes: codafs, hpfs, ntfs, nwfs, 520 portalfs, smbfs, xfs. 521 52220121016: 523 The interface cloning API and ABI has changed. The following 524 modules need to be recompiled together with kernel: 525 ipfw(4), pfsync(4), pflog(4), usb(4), wlan(4), stf(4), 526 vlan(4), disc(4), edsc(4), if_bridge(4), gif(4), tap(4), 527 faith(4), epair(4), enc(4), tun(4), if_lagg(4), gre(4). 528 52920121015: 530 The sdhci driver was split in two parts: sdhci (generic SD Host 531 Controller logic) and sdhci_pci (actual hardware driver). 532 No kernel config modifications are required, but if you 533 load sdhc as a module you must switch to sdhci_pci instead. 534 53520121014: 536 Import the FUSE kernel and userland support into base system. 537 53820121013: 539 The GNU sort(1) program has been removed since the BSD-licensed 540 sort(1) has been the default for quite some time and no serious 541 problems have been reported. The corresponding WITH_GNU_SORT 542 knob has also gone. 543 54420121006: 545 The pfil(9) API/ABI for AF_INET family has been changed. Packet 546 filtering modules: pf(4), ipfw(4), ipfilter(4) need to be recompiled 547 with new kernel. 548 54920121001: 550 The net80211(4) ABI has been changed to allow for improved driver 551 PS-POLL and power-save support. All wireless drivers need to be 552 recompiled to work with the new kernel. 553 55420120913: 555 The random(4) support for the VIA hardware random number 556 generator (`PADLOCK') is no longer enabled unconditionally. 557 Add the padlock_rng device in the custom kernel config if 558 needed. The GENERIC kernels on i386 and amd64 do include the 559 device, so the change only affects the custom kernel 560 configurations. 561 56220120908: 563 The pf(4) packet filter ABI has been changed. pfctl(8) and 564 snmp_pf module need to be recompiled to work with new kernel. 565 56620120828: 567 A new ZFS feature flag "com.delphix:empty_bpobj" has been merged 568 to -HEAD. Pools that have empty_bpobj in active state can not be 569 imported read-write with ZFS implementations that do not support 570 this feature. For more information read the zpool-features(5) 571 manual page. 572 57320120727: 574 The sparc64 ZFS loader has been changed to no longer try to auto- 575 detect ZFS providers based on diskN aliases but now requires these 576 to be explicitly listed in the OFW boot-device environment variable. 577 57820120712: 579 The OpenSSL has been upgraded to 1.0.1c. Any binaries requiring 580 libcrypto.so.6 or libssl.so.6 must be recompiled. Also, there are 581 configuration changes. Make sure to merge /etc/ssl/openssl.cnf. 582 58320120712: 584 The following sysctls and tunables have been renamed for consistency 585 with other variables: 586 kern.cam.da.da_send_ordered -> kern.cam.da.send_ordered 587 kern.cam.ada.ada_send_ordered -> kern.cam.ada.send_ordered 588 58920120628: 590 The sort utility has been replaced with BSD sort. For now, GNU sort 591 is also available as "gnusort" or the default can be set back to 592 GNU sort by setting WITH_GNU_SORT. In this case, BSD sort will be 593 installed as "bsdsort". 594 59520120611: 596 A new version of ZFS (pool version 5000) has been merged to -HEAD. 597 Starting with this version the old system of ZFS pool versioning 598 is superseded by "feature flags". This concept enables forward 599 compatibility against certain future changes in functionality of ZFS 600 pools. The first read-only compatible "feature flag" for ZFS pools 601 is named "com.delphix:async_destroy". For more information 602 read the new zpool-features(5) manual page. 603 Please refer to the "ZFS notes" section of this file for information 604 on upgrading boot ZFS pools. 605 60620120417: 607 The malloc(3) implementation embedded in libc now uses sources imported 608 as contrib/jemalloc. The most disruptive API change is to 609 /etc/malloc.conf. If your system has an old-style /etc/malloc.conf, 610 delete it prior to installworld, and optionally re-create it using the 611 new format after rebooting. See malloc.conf(5) for details 612 (specifically the TUNING section and the "opt.*" entries in the MALLCTL 613 NAMESPACE section). 614 61520120328: 616 Big-endian MIPS TARGET_ARCH values no longer end in "eb". mips64eb 617 is now spelled mips64. mipsn32eb is now spelled mipsn32. mipseb is 618 now spelled mips. This is to aid compatibility with third-party 619 software that expects this naming scheme in uname(3). Little-endian 620 settings are unchanged. If you are updating a big-endian mips64 machine 621 from before this change, you may need to set MACHINE_ARCH=mips64 in 622 your environment before the new build system will recognize your machine. 623 62420120306: 625 Disable by default the option VFS_ALLOW_NONMPSAFE for all supported 626 platforms. 627 62820120229: 629 Now unix domain sockets behave "as expected" on nullfs(5). Previously 630 nullfs(5) did not pass through all behaviours to the underlying layer, 631 as a result if we bound to a socket on the lower layer we could connect 632 only to the lower path; if we bound to the upper layer we could connect 633 only to the upper path. The new behavior is one can connect to both the 634 lower and the upper paths regardless what layer path one binds to. 635 63620120211: 637 The getifaddrs upgrade path broken with 20111215 has been restored. 638 If you have upgraded in between 20111215 and 20120209 you need to 639 recompile libc again with your kernel. You still need to recompile 640 world to be able to configure CARP but this restriction already 641 comes from 20111215. 642 64320120114: 644 The set_rcvar() function has been removed from /etc/rc.subr. All 645 base and ports rc.d scripts have been updated, so if you have a 646 port installed with a script in /usr/local/etc/rc.d you can either 647 hand-edit the rcvar= line, or reinstall the port. 648 649 An easy way to handle the mass-update of /etc/rc.d: 650 rm /etc/rc.d/* && mergemaster -i 651 65220120109: 653 panic(9) now stops other CPUs in the SMP systems, disables interrupts 654 on the current CPU and prevents other threads from running. 655 This behavior can be reverted using the kern.stop_scheduler_on_panic 656 tunable/sysctl. 657 The new behavior can be incompatible with kern.sync_on_panic. 658 65920111215: 660 The carp(4) facility has been changed significantly. Configuration 661 of the CARP protocol via ifconfig(8) has changed, as well as format 662 of CARP events submitted to devd(8) has changed. See manual pages 663 for more information. The arpbalance feature of carp(4) is currently 664 not supported anymore. 665 666 Size of struct in_aliasreq, struct in6_aliasreq has changed. User 667 utilities using SIOCAIFADDR, SIOCAIFADDR_IN6, e.g. ifconfig(8), 668 need to be recompiled. 669 67020111122: 671 The acpi_wmi(4) status device /dev/wmistat has been renamed to 672 /dev/wmistat0. 673 67420111108: 675 The option VFS_ALLOW_NONMPSAFE option has been added in order to 676 explicitely support non-MPSAFE filesystems. 677 It is on by default for all supported platform at this present 678 time. 679 68020111101: 681 The broken amd(4) driver has been replaced with esp(4) in the amd64, 682 i386 and pc98 GENERIC kernel configuration files. 683 68420110930: 685 sysinstall has been removed 686 68720110923: 688 The stable/9 branch created in subversion. This corresponds to the 689 RELENG_9 branch in CVS. 690 69120110913: 692 This commit modifies vfs_register() so that it uses a hash 693 calculation to set vfc_typenum, which is enabled by default. 694 The first time a system is booted after this change, the 695 vfc_typenum values will change for all file systems. The 696 main effect of this is a change to the NFS server file handles 697 for file systems that use vfc_typenum in their fsid, such as ZFS. 698 It will, however, prevent vfc_typenum from changing when file 699 systems are loaded in a different order for subsequent reboots. 700 To disable this, you can set vfs.typenumhash=0 in /boot/loader.conf 701 until you are ready to remount all NFS clients after a reboot. 702 70320110828: 704 Bump the shared library version numbers for libraries that 705 do not use symbol versioning, have changed the ABI compared 706 to stable/8 and which shared library version was not bumped. 707 Done as part of 9.0-RELEASE cycle. 708 70920110815: 710 During the merge of Capsicum features, the fget(9) KPI was modified. 711 This may require the rebuilding of out-of-tree device drivers -- 712 issues have been reported specifically with the nVidia device driver. 713 __FreeBSD_version is bumped to 900041. 714 715 Also, there is a period between 20110811 and 20110814 where the 716 special devices /dev/{stdin,stdout,stderr} did not work correctly. 717 Building world from a kernel during that window may not work. 718 71920110628: 720 The packet filter (pf) code has been updated to OpenBSD 4.5. 721 You need to update userland tools to be in sync with kernel. 722 This update breaks backward compatibility with earlier pfsync(4) 723 versions. Care must be taken when updating redundant firewall setups. 724 72520110608: 726 The following sysctls and tunables are retired on x86 platforms: 727 machdep.hlt_cpus 728 machdep.hlt_logical_cpus 729 The following sysctl is retired: 730 machdep.hyperthreading_allowed 731 The sysctls were supposed to provide a way to dynamically offline and 732 online selected CPUs on x86 platforms, but the implementation has not 733 been reliable especially with SCHED_ULE scheduler. 734 machdep.hyperthreading_allowed tunable is still available to ignore 735 hyperthreading CPUs at OS level. 736 Individual CPUs can be disabled using hint.lapic.X.disabled tunable, 737 where X is an APIC ID of a CPU. Be advised, though, that disabling 738 CPUs in non-uniform fashion will result in non-uniform topology and 739 may lead to sub-optimal system performance with SCHED_ULE, which is 740 a default scheduler. 741 74220110607: 743 cpumask_t type is retired and cpuset_t is used in order to describe 744 a mask of CPUs. 745 74620110531: 747 Changes to ifconfig(8) for dynamic address family detection mandate 748 that you are running a kernel of 20110525 or later. Make sure to 749 follow the update procedure to boot a new kernel before installing 750 world. 751 75220110513: 753 Support for sun4v architecture is officially dropped 754 75520110503: 756 Several KPI breaking changes have been committed to the mii(4) layer, 757 the PHY drivers and consequently some Ethernet drivers using mii(4). 758 This means that miibus.ko and the modules of the affected Ethernet 759 drivers need to be recompiled. 760 761 Note to kernel developers: Given that the OUI bit reversion problem 762 was fixed as part of these changes all mii(4) commits related to OUIs, 763 i.e. to sys/dev/mii/miidevs, PHY driver probing and vendor specific 764 handling, no longer can be merged verbatim to stable/8 and previous 765 branches. 766 76720110430: 768 Users of the Atheros AR71xx SoC code now need to add 'device ar71xx_pci' 769 into their kernel configurations along with 'device pci'. 770 77120110427: 772 The default NFS client is now the new NFS client, so fstype "newnfs" 773 is now "nfs" and the regular/old NFS client is now fstype "oldnfs". 774 Although mounts via fstype "nfs" will usually work without userland 775 changes, it is recommended that the mount(8) and mount_nfs(8) 776 commands be rebuilt from sources and that a link to mount_nfs called 777 mount_oldnfs be created. The new client is compiled into the 778 kernel with "options NFSCL" and this is needed for diskless root 779 file systems. The GENERIC kernel configs have been changed to use 780 NFSCL and NFSD (the new server) instead of NFSCLIENT and NFSSERVER. 781 To use the regular/old client, you can "mount -t oldnfs ...". For 782 a diskless root file system, you must also include a line like: 783 784 vfs.root.mountfrom="oldnfs:" 785 786 in the boot/loader.conf on the root fs on the NFS server to make 787 a diskless root fs use the old client. 788 78920110424: 790 The GENERIC kernels for all architectures now default to the new 791 CAM-based ATA stack. It means that all legacy ATA drivers were 792 removed and replaced by respective CAM drivers. If you are using 793 ATA device names in /etc/fstab or other places, make sure to update 794 them respectively (adX -> adaY, acdX -> cdY, afdX -> daY, astX -> saY, 795 where 'Y's are the sequential numbers starting from zero for each type 796 in order of detection, unless configured otherwise with tunables, 797 see cam(4)). There will be symbolic links created in /dev/ to map 798 old adX devices to the respective adaY. They should provide basic 799 compatibility for file systems mounting in most cases, but they do 800 not support old user-level APIs and do not have respective providers 801 in GEOM. Consider using updated management tools with new device names. 802 803 It is possible to load devices ahci, ata, siis and mvs as modules, 804 but option ATA_CAM should remain in kernel configuration to make ata 805 module work as CAM driver supporting legacy ATA controllers. Device ata 806 still can be used in modular fashion (atacore + ...). Modules atadisk 807 and atapi* are not used and won't affect operation in ATA_CAM mode. 808 Note that to use CAM-based ATA kernel should include CAM devices 809 scbus, pass, da (or explicitly ada), cd and optionally others. All of 810 them are parts of the cam module. 811 812 ataraid(4) functionality is now supported by the RAID GEOM class. 813 To use it you can load geom_raid kernel module and use graid(8) tool 814 for management. Instead of /dev/arX device names, use /dev/raid/rX. 815 816 No kernel config options or code have been removed, so if a problem 817 arises, please report it and optionally revert to the old ATA stack. 818 In order to do it you can remove from the kernel config: 819 options ATA_CAM 820 device ahci 821 device mvs 822 device siis 823 , and instead add back: 824 device atadisk # ATA disk drives 825 device ataraid # ATA RAID drives 826 device atapicd # ATAPI CDROM drives 827 device atapifd # ATAPI floppy drives 828 device atapist # ATAPI tape drives 829 83020110423: 831 The default NFS server has been changed to the new server, which 832 was referred to as the experimental server. If you need to switch 833 back to the old NFS server, you must now put the "-o" option on 834 both the mountd and nfsd commands. This can be done using the 835 mountd_flags and nfs_server_flags rc.conf variables until an 836 update to the rc scripts is committed, which is coming soon. 837 83820110418: 839 The GNU Objective-C runtime library (libobjc), and other Objective-C 840 related components have been removed from the base system. If you 841 require an Objective-C library, please use one of the available ports. 842 84320110331: 844 ath(4) has been split into bus- and device- modules. if_ath contains 845 the HAL, the TX rate control and the network device code. if_ath_pci 846 contains the PCI bus glue. For Atheros MIPS embedded systems, if_ath_ahb 847 contains the AHB glue. Users need to load both if_ath_pci and if_ath 848 in order to use ath on everything else. 849 850 TO REPEAT: if_ath_ahb is not needed for normal users. Normal users only 851 need to load if_ath and if_ath_pci for ath(4) operation. 852 85320110314: 854 As part of the replacement of sysinstall, the process of building 855 release media has changed significantly. For details, please re-read 856 release(7), which has been updated to reflect the new build process. 857 85820110218: 859 GNU binutils 2.17.50 (as of 2007-07-03) has been merged to -HEAD. This 860 is the last available version under GPLv2. It brings a number of new 861 features, such as support for newer x86 CPU's (with SSE-3, SSSE-3, SSE 862 4.1 and SSE 4.2), better support for powerpc64, a number of new 863 directives, and lots of other small improvements. See the ChangeLog 864 file in contrib/binutils for the full details. 865 86620110218: 867 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868 868 compliant, and will now use half of hash for authentication. 869 This will break interoperability with all stacks (including all 870 actual FreeBSD versions) who implement 871 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for 872 authentication). 873 The only workaround with such peers is to use another HMAC 874 algorithm for IPsec ("phase 2") authentication. 875 87620110207: 877 Remove the uio_yield prototype and symbol. This function has 878 been misnamed since it was introduced and should not be 879 globally exposed with this name. The equivalent functionality 880 is now available using kern_yield(curthread->td_user_pri). 881 The function remains undocumented. 882 88320110112: 884 A SYSCTL_[ADD_]UQUAD was added for unsigned uint64_t pointers, 885 symmetric with the existing SYSCTL_[ADD_]QUAD. Type checking 886 for scalar sysctls is defined but disabled. Code that needs 887 UQUAD to pass the type checking that must compile on older 888 systems where the define is not present can check against 889 __FreeBSD_version >= 900030. 890 891 The system dialog(1) has been replaced with a new version previously 892 in ports as devel/cdialog. dialog(1) is mostly command-line compatible 893 with the previous version, but the libdialog associated with it has 894 a largely incompatible API. As such, the original version of libdialog 895 will be kept temporarily as libodialog, until its base system consumers 896 are replaced or updated. Bump __FreeBSD_version to 900030. 897 89820110103: 899 If you are trying to run make universe on a -stable system, and you get 900 the following warning: 901 "Makefile", line 356: "Target architecture for i386/conf/GENERIC 902 unknown. config(8) likely too old." 903 or something similar to it, then you must upgrade your -stable system 904 to 8.2-Release or newer (really, any time after r210146 7/15/2010 in 905 stable/8) or build the config from the latest stable/8 branch and 906 install it on your system. 907 908 Prior to this date, building a current universe on 8-stable system from 909 between 7/15/2010 and 1/2/2011 would result in a weird shell parsing 910 error in the first kernel build phase. A new config on those old 911 systems will fix that problem for older versions of -current. 912 91320101228: 914 The TCP stack has been modified to allow Khelp modules to interact with 915 it via helper hook points and store per-connection data in the TCP 916 control block. Bump __FreeBSD_version to 900029. User space tools that 917 rely on the size of struct tcpcb in tcp_var.h (e.g. sockstat) need to 918 be recompiled. 919 92020101114: 921 Generic IEEE 802.3 annex 31B full duplex flow control support has been 922 added to mii(4) and bge(4), bce(4), msk(4), nfe(4) and stge(4) along 923 with brgphy(4), e1000phy(4) as well as ip1000phy() have been converted 924 to take advantage of it instead of using custom implementations. This 925 means that these drivers now no longer unconditionally advertise 926 support for flow control but only do so if flow control is a selected 927 media option. This was implemented in the generic support that way in 928 order to allow flow control to be switched on and off via ifconfig(8) 929 with the PHY specific default to typically off in order to protect 930 from unwanted effects. Consequently, if you used flow control with 931 one of the above mentioned drivers you now need to explicitly enable 932 it, for example via: 933 ifconfig bge0 media auto mediaopt flowcontrol 934 935 Along with the above mentioned changes generic support for setting 936 1000baseT master mode also has been added and brgphy(4), ciphy(4), 937 e1000phy(4) as well as ip1000phy(4) have been converted to take 938 advantage of it. This means that these drivers now no longer take the 939 link0 parameter for selecting master mode but the master media option 940 has to be used instead, for example like in the following: 941 ifconfig bge0 media 1000baseT mediaopt full-duplex,master 942 943 Selection of master mode now is also available with all other PHY 944 drivers supporting 1000baseT. 945 94620101111: 947 The TCP stack has received a significant update to add support for 948 modularised congestion control and generally improve the clarity of 949 congestion control decisions. Bump __FreeBSD_version to 900025. User 950 space tools that rely on the size of struct tcpcb in tcp_var.h (e.g. 951 sockstat) need to be recompiled. 952 95320101002: 954 The man(1) utility has been replaced by a new version that no longer 955 uses /etc/manpath.config. Please consult man.conf(5) for how to 956 migrate local entries to the new format. 957 95820100928: 959 The copyright strings printed by login(1) and sshd(8) at the time of a 960 new connection have been removed to follow other operating systems and 961 upstream sshd. 962 96320100915: 964 A workaround for a fixed ld bug has been removed in kernel code, 965 so make sure that your system ld is built from sources after 966 revision 210245 from 2010-07-19 (r211583 if building head kernel 967 on stable/8, r211584 for stable/7; both from 2010-08-21). 968 A symptom of incorrect ld version is different addresses for 969 set_pcpu section and __start_set_pcpu symbol in kernel and/or modules. 970 97120100913: 972 The $ipv6_prefer variable in rc.conf(5) has been split into 973 $ip6addrctl_policy and $ipv6_activate_all_interfaces. 974 975 The $ip6addrctl_policy is a variable to choose a pre-defined 976 address selection policy set by ip6addrctl(8). A value 977 "ipv4_prefer", "ipv6_prefer" or "AUTO" can be specified. The 978 default is "AUTO". 979 980 The $ipv6_activate_all_interfaces specifies whether IFDISABLED 981 flag (see an entry of 20090926) is set on an interface with no 982 corresponding $ifconfig_IF_ipv6 line. The default is "NO" for 983 security reason. If you want IPv6 link-local address on all 984 interfaces by default, set this to "YES". 985 986 The old ipv6_prefer="YES" is equivalent to 987 ipv6_activate_all_interfaces="YES" and 988 ip6addrctl_policy="ipv6_prefer". 989 99020100913: 991 DTrace has grown support for userland tracing. Due to this, DTrace is 992 now i386 and amd64 only. 993 dtruss(1) is now installed by default on those systems and a new 994 kernel module is needed for userland tracing: fasttrap. 995 No changes to your kernel config file are necessary to enable 996 userland tracing, but you might consider adding 'STRIP=' and 997 'CFLAGS+=-fno-omit-frame-pointer' to your make.conf if you want 998 to have informative userland stack traces in DTrace (ustack). 999 100020100725: 1001 The acpi_aiboost(4) driver has been removed in favor of the new 1002 aibs(4) driver. You should update your kernel configuration file. 1003 100420100722: 1005 BSD grep has been imported to the base system and it is built by 1006 default. It is completely BSD licensed, highly GNU-compatible, uses 1007 less memory than its GNU counterpart and has a small codebase. 1008 However, it is slower than its GNU counterpart, which is mostly 1009 noticeable for larger searches, for smaller ones it is measurable 1010 but not significant. The reason is complex, the most important factor 1011 is that we lack a modern and efficient regex library and GNU 1012 overcomes this by optimizing the searches internally. Future work 1013 on improving the regex performance is planned, for the meantime, 1014 users that need better performance, can build GNU grep instead by 1015 setting the WITH_GNU_GREP knob. 1016 101720100713: 1018 Due to the import of powerpc64 support, all existing powerpc kernel 1019 configuration files must be updated with a machine directive like this: 1020 machine powerpc powerpc 1021 1022 In addition, an updated config(8) is required to build powerpc kernels 1023 after this change. 1024 102520100713: 1026 A new version of ZFS (version 15) has been merged to -HEAD. 1027 This version uses a python library for the following subcommands: 1028 zfs allow, zfs unallow, zfs groupspace, zfs userspace. 1029 For full functionality of these commands the following port must 1030 be installed: sysutils/py-zfs 1031 103220100429: 1033 'vm_page's are now hashed by physical address to an array of mutexes. 1034 Currently this is only used to serialize access to hold_count. Over 1035 time the page queue mutex will be peeled away. This changes the size 1036 of pmap on every architecture. And requires all callers of vm_page_hold 1037 and vm_page_unhold to be updated. 1038 103920100402: 1040 WITH_CTF can now be specified in src.conf (not recommended, there 1041 are some problems with static executables), make.conf (would also 1042 affect ports which do not use GNU make and do not override the 1043 compile targets) or in the kernel config (via "makeoptions 1044 WITH_CTF=yes"). 1045 When WITH_CTF was specified there before this was silently ignored, 1046 so make sure that WITH_CTF is not used in places which could lead 1047 to unwanted behavior. 1048 104920100311: 1050 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32 1051 to allow 32-bit compatibility on non-x86 platforms. All kernel 1052 configurations on amd64 and ia64 platforms using these options must 1053 be modified accordingly. 1054 105520100113: 1056 The utmp user accounting database has been replaced with utmpx, 1057 the user accounting interface standardized by POSIX. 1058 Unfortunately the semantics of utmp and utmpx don't match, 1059 making it practically impossible to support both interfaces. 1060 The user accounting database is used by tools like finger(1), 1061 last(1), talk(1), w(1) and ac(8). 1062 1063 All applications in the base system use utmpx. This means only 1064 local binaries (e.g. from the ports tree) may still use these 1065 utmp database files. These applications must be rebuilt to make 1066 use of utmpx. 1067 1068 After the system has been upgraded, it is safe to remove the old 1069 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*), 1070 assuming their contents is of no importance anymore. Old wtmp 1071 databases can only be used by last(1) and ac(8) after they have 1072 been converted to the new format using wtmpcvt(1). 1073 107420100108: 1075 Introduce the kernel thread "deadlock resolver" (which can be enabled 1076 via the DEADLKRES option, see NOTES for more details) and the 1077 sleepq_type() function for sleepqueues. 1078 107920091202: 1080 The rc.firewall and rc.firewall6 were unified, and 1081 rc.firewall6 and rc.d/ip6fw were removed. 1082 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc 1083 variables are obsoleted. Instead, the following new rc 1084 variables are added to rc.d/ipfw: 1085 1086 firewall_client_net_ipv6, firewall_simple_iif_ipv6, 1087 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6, 1088 firewall_simple_onet_ipv6, firewall_trusted_ipv6 1089 1090 The meanings correspond to the relevant IPv4 variables. 1091 109220091125: 1093 8.0-RELEASE. 1094 109520091113: 1096 The default terminal emulation for syscons(4) has been changed 1097 from cons25 to xterm on all platforms except pc98. This means 1098 that the /etc/ttys file needs to be updated to ensure correct 1099 operation of applications on the console. 1100 1101 The terminal emulation style can be toggled per window by using 1102 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration 1103 options can be used to change the compile-time default back to 1104 cons25. 1105 1106 To prevent graphical artifacts, make sure the TERM environment 1107 variable is set to match the terminal emulation that is being 1108 performed by syscons(4). 1109 111020091109: 1111 The layout of the structure ieee80211req_scan_result has changed. 1112 Applications that require wireless scan results (e.g. ifconfig(8)) 1113 from net80211 need to be recompiled. 1114 1115 Applications such as wpa_supplicant(8) may require a full world 1116 build without using NO_CLEAN in order to get synchronized with the 1117 new structure. 1118 111920091025: 1120 The iwn(4) driver has been updated to support the 5000 and 5150 series. 1121 There's one kernel module for each firmware. Adding "device iwnfw" 1122 to the kernel configuration file means including all three firmware 1123 images inside the kernel. If you want to include just the one for 1124 your wireless card, use the devices iwn4965fw, iwn5000fw or 1125 iwn5150fw. 1126 112720090926: 1128 The rc.d/network_ipv6, IPv6 configuration script has been integrated 1129 into rc.d/netif. The changes are the following: 1130 1131 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF 1132 for IPv4. For aliases, $ifconfig_IF_aliasN should be used. 1133 Note that both variables need the "inet6" keyword at the head. 1134 1135 Do not set $ipv6_network_interfaces manually if you do not 1136 understand what you are doing. It is not needed in most cases. 1137 1138 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but 1139 they are obsolete. 1140 1141 2. $ipv6_enable is obsolete. Use $ipv6_prefer and 1142 "inet6 accept_rtadv" keyword in ifconfig(8) instead. 1143 1144 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and 1145 all configured interfaces have "inet6 accept_rtadv" in the 1146 $ifconfig_IF_ipv6. These are for backward compatibility. 1147 1148 3. A new variable $ipv6_prefer has been added. If NO, IPv6 1149 functionality of interfaces with no corresponding 1150 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag, 1151 and the default address selection policy of ip6addrctl(8) 1152 is the IPv4-preferred one (see rc.d/ip6addrctl for more details). 1153 Note that if you want to configure IPv6 functionality on the 1154 disabled interfaces after boot, first you need to clear the flag by 1155 using ifconfig(8) like: 1156 1157 ifconfig em0 inet6 -ifdisabled 1158 1159 If YES, the default address selection policy is set as 1160 IPv6-preferred. 1161 1162 The default value of $ipv6_prefer is NO. 1163 1164 4. If your system need to receive Router Advertisement messages, 1165 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8) 1166 scripts automatically invoke rtsol(8) when the interface becomes 1167 UP. The Router Advertisement messages are used for SLAAC 1168 (State-Less Address AutoConfiguration). 1169 117020090922: 1171 802.11s D3.03 support was committed. This is incompatible with the 1172 previous code, which was based on D3.0. 1173 117420090912: 1175 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value 1176 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to 1177 control whether accepting Router Advertisement messages or not. 1178 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and 1179 a sysctl variable net.inet6.ip6.auto_linklocal is its default value. 1180 The ifconfig(8) utility now supports these flags. 1181 118220090910: 1183 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for 1184 mount(8) and -a option for df(1) to see them. 1185 118620090825: 1187 The old tunable hw.bus.devctl_disable has been superseded by 1188 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be 1189 replaced by hw.bus.devctl_queue=0. The default for this new tunable 1190 is 1000. 1191 119220090813: 1193 Remove the option STOP_NMI. The default action is now to use NMI only 1194 for KDB via the newly introduced function stop_cpus_hard() and 1195 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64. 1196 119720090803: 1198 The stable/8 branch created in subversion. This corresponds to the 1199 RELENG_8 branch in CVS. 1200 120120090719: 1202 Bump the shared library version numbers for all libraries that do not 1203 use symbol versioning as part of the 8.0-RELEASE cycle. Bump 1204 __FreeBSD_version to 800105. 1205 120620090714: 1207 Due to changes in the implementation of virtual network stack support, 1208 all network-related kernel modules must be recompiled. As this change 1209 breaks the ABI, bump __FreeBSD_version to 800104. 1210 121120090713: 1212 The TOE interface to the TCP syncache has been modified to remove 1213 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. 1214 The cxgb driver is the only TOE consumer affected by this change, and 1215 needs to be recompiled along with the kernel. As this change breaks 1216 the ABI, bump __FreeBSD_version to 800103. 1217 121820090712: 1219 Padding has been added to struct tcpcb, sackhint and tcpstat in 1220 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst 1221 maintaining the ABI. However, this change breaks the ABI, so bump 1222 __FreeBSD_version to 800102. User space tools that rely on the size of 1223 any of these structs (e.g. sockstat) need to be recompiled. 1224 122520090630: 1226 The NFS_LEGACYRPC option has been removed along with the old kernel 1227 RPC implementation that this option selected. Kernel configurations 1228 may need to be adjusted. 1229 123020090629: 1231 The network interface device nodes at /dev/net/<interface> have been 1232 removed. All ioctl operations can be performed the normal way using 1233 routing sockets. The kqueue functionality can generally be replaced 1234 with routing sockets. 1235 123620090628: 1237 The documentation from the FreeBSD Documentation Project (Handbook, 1238 FAQ, etc.) is now installed via packages by sysinstall(8) and under 1239 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc. 1240 124120090624: 1242 The ABI of various structures related to the SYSV IPC API have been 1243 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel 1244 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to 1245 800100. 1246 124720090622: 1248 Layout of struct vnet has changed as routing related variables were 1249 moved to their own Vimage module. Modules need to be recompiled. Bump 1250 __FreeBSD_version to 800099. 1251 125220090619: 1253 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024 1254 respectively. As long as no more than 16 groups per process are used, 1255 no changes should be visible. When more than 16 groups are used, old 1256 binaries may fail if they call getgroups() or getgrouplist() with 1257 statically sized storage. Recompiling will work around this, but 1258 applications should be modified to use dynamically allocated storage 1259 for group arrays as POSIX.1-2008 does not cap an implementation's 1260 number of supported groups at NGROUPS_MAX+1 as previous versions did. 1261 1262 NFS and portalfs mounts may also be affected as the list of groups is 1263 truncated to 16. Users of NFS who use more than 16 groups, should 1264 take care that negative group permissions are not used on the exported 1265 file systems as they will not be reliable unless a GSSAPI based 1266 authentication method is used. 1267 126820090616: 1269 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This 1270 option compiles in the support for adaptive spinning for lockmgrs 1271 which want to enable it. The lockinit() function now accepts the flag 1272 LK_ADAPTIVE in order to make the lock object subject to adaptive 1273 spinning when both held in write and read mode. 1274 127520090613: 1276 The layout of the structure returned by IEEE80211_IOC_STA_INFO has 1277 changed. User applications that use this ioctl need to be rebuilt. 1278 127920090611: 1280 The layout of struct thread has changed. Kernel and modules need to 1281 be rebuilt. 1282 128320090608: 1284 The layout of structs ifnet, domain, protosw and vnet_net has changed. 1285 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097. 1286 128720090602: 1288 window(1) has been removed from the base system. It can now be 1289 installed from ports. The port is called misc/window. 1290 129120090601: 1292 The way we are storing and accessing `routing table' entries has 1293 changed. Programs reading the FIB, like netstat, need to be 1294 re-compiled. 1295 129620090601: 1297 A new netisr implementation has been added for FreeBSD 8. Network 1298 file system modules, such as igmp, ipdivert, and others, should be 1299 rebuilt. 1300 Bump __FreeBSD_version to 800096. 1301 130220090530: 1303 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no 1304 more valid. 1305 130620090530: 1307 Add VOP_ACCESSX(9). File system modules need to be rebuilt. 1308 Bump __FreeBSD_version to 800094. 1309 131020090529: 1311 Add mnt_xflag field to 'struct mount'. File system modules need to be 1312 rebuilt. 1313 Bump __FreeBSD_version to 800093. 1314 131520090528: 1316 The compiling option ADAPTIVE_SX has been retired while it has been 1317 introduced the option NO_ADAPTIVE_SX which handles the reversed logic. 1318 The KPI for sx_init_flags() changes as accepting flags: 1319 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has 1320 been introduced in order to handle the reversed logic. 1321 Bump __FreeBSD_version to 800092. 1322 132320090527: 1324 Add support for hierarchical jails. Remove global securelevel. 1325 Bump __FreeBSD_version to 800091. 1326 132720090523: 1328 The layout of struct vnet_net has changed, therefore modules 1329 need to be rebuilt. 1330 Bump __FreeBSD_version to 800090. 1331 133220090523: 1333 The newly imported zic(8) produces a new format in the output. Please 1334 run tzsetup(8) to install the newly created data to /etc/localtime. 1335 133620090520: 1337 The sysctl tree for the usb stack has renamed from hw.usb2.* to 1338 hw.usb.* and is now consistent again with previous releases. 1339 134020090520: 1341 802.11 monitor mode support was revised and driver api's were changed. 1342 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead 1343 of DLT_IEEE802_11. No user-visible data structures were changed but 1344 applications that use DLT_IEEE802_11 may require changes. 1345 Bump __FreeBSD_version to 800088. 1346 134720090430: 1348 The layout of the following structs has changed: sysctl_oid, 1349 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet, 1350 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or 1351 panics may be experienced. World rebuild is required for 1352 correctly checking networking state from userland. 1353 Bump __FreeBSD_version to 800085. 1354 135520090429: 1356 MLDv2 and Source-Specific Multicast (SSM) have been merged 1357 to the IPv6 stack. VIMAGE hooks are in but not yet used. 1358 The implementation of SSM within FreeBSD's IPv6 stack closely 1359 follows the IPv4 implementation. 1360 1361 For kernel developers: 1362 1363 * The most important changes are that the ip6_output() and 1364 ip6_input() paths no longer take the IN6_MULTI_LOCK, 1365 and this lock has been downgraded to a non-recursive mutex. 1366 1367 * As with the changes to the IPv4 stack to support SSM, filtering 1368 of inbound multicast traffic must now be performed by transport 1369 protocols within the IPv6 stack. This does not apply to TCP and 1370 SCTP, however, it does apply to UDP in IPv6 and raw IPv6. 1371 1372 * The KPIs used by IPv6 multicast are similar to those used by 1373 the IPv4 stack, with the following differences: 1374 * im6o_mc_filter() is analogous to imo_multicast_filter(). 1375 * The legacy KAME entry points in6_joingroup and in6_leavegroup() 1376 are shimmed to in6_mc_join() and in6_mc_leave() respectively. 1377 * IN6_LOOKUP_MULTI() has been deprecated and removed. 1378 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs 1379 for MLDv1 have an additional 'timer' argument which is used to 1380 jitter the initial membership report for the solicited-node 1381 multicast membership on-link. 1382 * This is not strictly needed for MLDv2, which already jitters 1383 its report transmissions. However, the 'timer' argument is 1384 preserved in case MLDv1 is active on the interface. 1385 1386 * The KAME linked-list based IPv6 membership implementation has 1387 been refactored to use a vector similar to that used by the IPv4 1388 stack. 1389 Code which maintains a list of its own multicast memberships 1390 internally, e.g. carp, has been updated to reflect the new 1391 semantics. 1392 1393 * There is a known Lock Order Reversal (LOR) due to in6_setscope() 1394 acquiring the IF_AFDATA_LOCK and being called within ip6_output(). 1395 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an 1396 implementation constraint which needs to be addressed in HEAD. 1397 1398 For application developers: 1399 1400 * The changes are broadly similar to those made for the IPv4 1401 stack. 1402 1403 * The use of IPv4 and IPv6 multicast socket options on the same 1404 socket, using mapped addresses, HAS NOT been tested or supported. 1405 1406 * There are a number of issues with the implementation of various 1407 IPv6 multicast APIs which need to be resolved in the API surface 1408 before the implementation is fully compatible with KAME userland 1409 use, and these are mostly to do with interface index treatment. 1410 1411 * The literature available discusses the use of either the delta / ASM 1412 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API 1413 using setsourcefilter(3)/getsourcefilter(3). For more information 1414 please refer to RFC 3768, 'Socket Interface Extensions for 1415 Multicast Source Filters'. 1416 1417 * Applications which use the published RFC 3678 APIs should be fine. 1418 1419 For systems administrators: 1420 1421 * The mtest(8) utility has been refactored to support IPv6, in 1422 addition to IPv4. Interface addresses are no longer accepted 1423 as arguments, their names must be used instead. The utility 1424 will map the interface name to its first IPv4 address as 1425 returned by getifaddrs(3). 1426 1427 * The ifmcstat(8) utility has also been updated to print the MLDv2 1428 endpoint state and source filter lists via sysctl(3). 1429 1430 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable 1431 loopback of IPv6 multicast datagrams by default; it defaults to 1 1432 to preserve the existing behaviour. Disabling multicast loopback is 1433 recommended for optimal system performance. 1434 1435 * The IPv6 MROUTING code has been changed to examine this sysctl 1436 instead of attempting to perform a group lookup before looping 1437 back forwarded datagrams. 1438 1439 Bump __FreeBSD_version to 800084. 1440 144120090422: 1442 Implement low-level Bluetooth HCI API. 1443 Bump __FreeBSD_version to 800083. 1444 144520090419: 1446 The layout of struct malloc_type, used by modules to register new 1447 memory allocation types, has changed. Most modules will need to 1448 be rebuilt or panics may be experienced. 1449 Bump __FreeBSD_version to 800081. 1450 145120090415: 1452 Anticipate overflowing inp_flags - add inp_flags2. 1453 This changes most offsets in inpcb, so checking v4 connection 1454 state will require a world rebuild. 1455 Bump __FreeBSD_version to 800080. 1456 145720090415: 1458 Add an llentry to struct route and struct route_in6. Modules 1459 embedding a struct route will need to be recompiled. 1460 Bump __FreeBSD_version to 800079. 1461 146220090414: 1463 The size of rt_metrics_lite and by extension rtentry has changed. 1464 Networking administration apps will need to be recompiled. 1465 The route command now supports show as an alias for get, weighting 1466 of routes, sticky and nostick flags to alter the behavior of stateful 1467 load balancing. 1468 Bump __FreeBSD_version to 800078. 1469 147020090408: 1471 Do not use Giant for kbdmux(4) locking. This is wrong and 1472 apparently causing more problems than it solves. This will 1473 re-open the issue where interrupt handlers may race with 1474 kbdmux(4) in polling mode. Typical symptoms include (but 1475 not limited to) duplicated and/or missing characters when 1476 low level console functions (such as gets) are used while 1477 interrupts are enabled (for example geli password prompt, 1478 mountroot prompt etc.). Disabling kbdmux(4) may help. 1479 148020090407: 1481 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed; 1482 kernel modules referencing any of the above need to be recompiled. 1483 Bump __FreeBSD_version to 800075. 1484 148520090320: 1486 GEOM_PART has become the default partition slicer for storage devices, 1487 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It 1488 introduces some changes: 1489 1490 MSDOS/EBR: the devices created from MSDOS extended partition entries 1491 (EBR) can be named differently than with GEOM_MBR and are now symlinks 1492 to devices with offset-based names. fstabs may need to be modified. 1493 1494 BSD: the "geometry does not match label" warning is harmless in most 1495 cases but it points to problems in file system misalignment with 1496 disk geometry. The "c" partition is now implicit, covers the whole 1497 top-level drive and cannot be (mis)used by users. 1498 1499 General: Kernel dumps are now not allowed to be written to devices 1500 whose partition types indicate they are meant to be used for file 1501 systems (or, in case of MSDOS partitions, as something else than 1502 the "386BSD" type). 1503 1504 Most of these changes date approximately from 200812. 1505 150620090319: 1507 The uscanner(4) driver has been removed from the kernel. This follows 1508 Linux removing theirs in 2.6 and making libusb the default interface 1509 (supported by sane). 1510 151120090319: 1512 The multicast forwarding code has been cleaned up. netstat(1) 1513 only relies on KVM now for printing bandwidth upcall meters. 1514 The IPv4 and IPv6 modules are split into ip_mroute_mod and 1515 ip6_mroute_mod respectively. The config(5) options for statically 1516 compiling this code remain the same, i.e. 'options MROUTING'. 1517 151820090315: 1519 Support for the IFF_NEEDSGIANT network interface flag has been 1520 removed, which means that non-MPSAFE network device drivers are no 1521 longer supported. In particular, if_ar, if_sr, and network device 1522 drivers from the old (legacy) USB stack can no longer be built or 1523 used. 1524 152520090313: 1526 POSIX.1 Native Language Support (NLS) has been enabled in libc and 1527 a bunch of new language catalog files have also been added. 1528 This means that some common libc messages are now localized and 1529 they depend on the LC_MESSAGES environmental variable. 1530 153120090313: 1532 The k8temp(4) driver has been renamed to amdtemp(4) since 1533 support for Family 10 and Family 11 CPU families was added. 1534 153520090309: 1536 IGMPv3 and Source-Specific Multicast (SSM) have been merged 1537 to the IPv4 stack. VIMAGE hooks are in but not yet used. 1538 1539 For kernel developers, the most important changes are that the 1540 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(), 1541 and this lock has been downgraded to a non-recursive mutex. 1542 1543 Transport protocols (UDP, Raw IP) are now responsible for filtering 1544 inbound multicast traffic according to group membership and source 1545 filters. The imo_multicast_filter() KPI exists for this purpose. 1546 Transports which do not use multicast (SCTP, TCP) already reject 1547 multicast by default. Forwarding and receive performance may improve 1548 as a mutex acquisition is no longer needed in the ip_input() 1549 low-level input path. in_addmulti() and in_delmulti() are shimmed 1550 to new KPIs which exist to support SSM in-kernel. 1551 1552 For application developers, it is recommended that loopback of 1553 multicast datagrams be disabled for best performance, as this 1554 will still cause the lock to be taken for each looped-back 1555 datagram transmission. The net.inet.ip.mcast.loop sysctl may 1556 be tuned to 0 to disable loopback by default; it defaults to 1 1557 to preserve the existing behaviour. 1558 1559 For systems administrators, to obtain best performance with 1560 multicast reception and multiple groups, it is always recommended 1561 that a card with a suitably precise hash filter is used. Hash 1562 collisions will still result in the lock being taken within the 1563 transport protocol input path to check group membership. 1564 1565 If deploying FreeBSD in an environment with IGMP snooping switches, 1566 it is recommended that the net.inet.igmp.sendlocal sysctl remain 1567 enabled; this forces 224.0.0.0/24 group membership to be announced 1568 via IGMP. 1569 1570 The size of 'struct igmpstat' has changed; netstat needs to be 1571 recompiled to reflect this. 1572 Bump __FreeBSD_version to 800070. 1573 157420090309: 1575 libusb20.so.1 is now installed as libusb.so.1 and the ports system 1576 updated to use it. This requires a buildworld/installworld in order to 1577 update the library and dependencies (usbconfig, etc). Its advisable to 1578 rebuild all ports which uses libusb. More specific directions are given 1579 in the ports collection UPDATING file. Any /etc/libmap.conf entries for 1580 libusb are no longer required and can be removed. 1581 158220090302: 1583 A workaround is committed to allow the creation of System V shared 1584 memory segment of size > 2 GB on the 64-bit architectures. 1585 Due to a limitation of the existing ABI, the shm_segsz member 1586 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is 1587 wrong for large segments. Note that limits must be explicitly 1588 raised to allow such segments to be created. 1589 159020090301: 1591 The layout of struct ifnet has changed, requiring a rebuild of all 1592 network device driver modules. 1593 159420090227: 1595 The /dev handling for the new USB stack has changed, a 1596 buildworld/installworld is required for libusb20. 1597 159820090223: 1599 The new USB2 stack has now been permanently moved in and all kernel and 1600 module names reverted to their previous values (eg, usb, ehci, ohci, 1601 ums, ...). The old usb stack can be compiled in by prefixing the name 1602 with the letter 'o', the old usb modules have been removed. 1603 Updating entry 20090216 for xorg and 20090215 for libmap may still 1604 apply. 1605 160620090217: 1607 The rc.conf(5) option if_up_delay has been renamed to 1608 defaultroute_delay to better reflect its purpose. If you have 1609 customized this setting in /etc/rc.conf you need to update it to 1610 use the new name. 1611 161220090216: 1613 xorg 7.4 wants to configure its input devices via hald which does not 1614 yet work with USB2. If the keyboard/mouse does not work in xorg then 1615 add 1616 Option "AllowEmptyInput" "off" 1617 to your ServerLayout section. This will cause X to use the configured 1618 kbd and mouse sections from your xorg.conf. 1619 162020090215: 1621 The GENERIC kernels for all architectures now default to the new USB2 1622 stack. No kernel config options or code have been removed so if a 1623 problem arises please report it and optionally revert to the old USB 1624 stack. If you are loading USB kernel modules or have a custom kernel 1625 that includes GENERIC then ensure that usb names are also changed over, 1626 eg uftdi -> usb2_serial_ftdi. 1627 1628 Older programs linked against the ports libusb 0.1 need to be 1629 redirected to the new stack's libusb20. /etc/libmap.conf can 1630 be used for this: 1631 # Map old usb library to new one for usb2 stack 1632 libusb-0.1.so.8 libusb20.so.1 1633 163420090209: 1635 All USB ethernet devices now attach as interfaces under the name ueN 1636 (eg. ue0). This is to provide a predictable name as vendors often 1637 change usb chipsets in a product without notice. 1638 163920090203: 1640 The ichsmb(4) driver has been changed to require SMBus slave 1641 addresses be left-justified (xxxxxxx0b) rather than right-justified. 1642 All of the other SMBus controller drivers require left-justified 1643 slave addresses, so this change makes all the drivers provide the 1644 same interface. 1645 164620090201: 1647 INET6 statistics (struct ip6stat) was updated. 1648 netstat(1) needs to be recompiled. 1649 165020090119: 1651 NTFS has been removed from GENERIC kernel on amd64 to match 1652 GENERIC on i386. Should not cause any issues since mount_ntfs(8) 1653 will load ntfs.ko module automatically when NTFS support is 1654 actually needed, unless ntfs.ko is not installed or security 1655 level prohibits loading kernel modules. If either is the case, 1656 "options NTFS" has to be added into kernel config. 1657 165820090115: 1659 TCP Appropriate Byte Counting (RFC 3465) support added to kernel. 1660 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to 1661 800061. User space tools that rely on the size of struct tcpcb in 1662 tcp_var.h (e.g. sockstat) need to be recompiled. 1663 166420081225: 1665 ng_tty(4) module updated to match the new TTY subsystem. 1666 Due to API change, user-level applications must be updated. 1667 New API support added to mpd5 CVS and expected to be present 1668 in next mpd5.3 release. 1669 167020081219: 1671 With __FreeBSD_version 800060 the makefs tool is part of 1672 the base system (it was a port). 1673 167420081216: 1675 The afdata and ifnet locks have been changed from mutexes to 1676 rwlocks, network modules will need to be re-compiled. 1677 167820081214: 1679 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite. 1680 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated. 1681 The new code reduced struct rtentry{} by 16 bytes on 32-bit 1682 architecture and 40 bytes on 64-bit architecture. The userland 1683 applications "arp" and "ndp" have been updated accordingly. 1684 The output from "netstat -r" shows only routing entries and 1685 none of the L2 information. 1686 168720081130: 1688 __FreeBSD_version 800057 marks the switchover from the 1689 binary ath hal to source code. Users must add the line: 1690 1691 options AH_SUPPORT_AR5416 1692 1693 to their kernel config files when specifying: 1694 1695 device ath_hal 1696 1697 The ath_hal module no longer exists; the code is now compiled 1698 together with the driver in the ath module. It is now 1699 possible to tailor chip support (i.e. reduce the set of chips 1700 and thereby the code size); consult ath_hal(4) for details. 1701 170220081121: 1703 __FreeBSD_version 800054 adds memory barriers to 1704 <machine/atomic.h>, new interfaces to ifnet to facilitate 1705 multiple hardware transmit queues for cards that support 1706 them, and a lock-less ring-buffer implementation to 1707 enable drivers to more efficiently manage queueing of 1708 packets. 1709 171020081117: 1711 A new version of ZFS (version 13) has been merged to -HEAD. 1712 This version has zpool attribute "listsnapshots" off by 1713 default, which means "zfs list" does not show snapshots, 1714 and is the same as Solaris behavior. 1715 171620081028: 1717 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled. 1718 171920081009: 1720 The uhci, ohci, ehci and slhci USB Host controller drivers have 1721 been put into separate modules. If you load the usb module 1722 separately through loader.conf you will need to load the 1723 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0 1724 controller add the following to loader.conf: 1725 1726 uhci_load="YES" 1727 ehci_load="YES" 1728 172920081009: 1730 The ABI used by the PMC toolset has changed. Please keep 1731 userland (libpmc(3)) and the kernel module (hwpmc(4)) in 1732 sync. 1733 173420081009: 1735 atapci kernel module now includes only generic PCI ATA 1736 driver. AHCI driver moved to ataahci kernel module. 1737 All vendor-specific code moved into separate kernel modules: 1738 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek, 1739 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron, 1740 atamarvell, atamicron, atanational, atanetcell, atanvidia, 1741 atapromise, ataserverworks, atasiliconimage, atasis, atavia 1742 174320080820: 1744 The TTY subsystem of the kernel has been replaced by a new 1745 implementation, which provides better scalability and an 1746 improved driver model. Most common drivers have been migrated to 1747 the new TTY subsystem, while others have not. The following 1748 drivers have not yet been ported to the new TTY layer: 1749 1750 PCI/ISA: 1751 cy, digi, rc, rp, sio 1752 1753 USB: 1754 ubser, ucycom 1755 1756 Line disciplines: 1757 ng_h4, ng_tty, ppp, sl, snp 1758 1759 Adding these drivers to your kernel configuration file shall 1760 cause compilation to fail. 1761 176220080818: 1763 ntpd has been upgraded to 4.2.4p5. 1764 176520080801: 1766 OpenSSH has been upgraded to 5.1p1. 1767 1768 For many years, FreeBSD's version of OpenSSH preferred DSA 1769 over RSA for host and user authentication keys. With this 1770 upgrade, we've switched to the vendor's default of RSA over 1771 DSA. This may cause upgraded clients to warn about unknown 1772 host keys even for previously known hosts. Users should 1773 follow the usual procedure for verifying host keys before 1774 accepting the RSA key. 1775 1776 This can be circumvented by setting the "HostKeyAlgorithms" 1777 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh 1778 command line. 1779 1780 Please note that the sequence of keys offered for 1781 authentication has been changed as well. You may want to 1782 specify IdentityFile in a different order to revert this 1783 behavior. 1784 178520080713: 1786 The sio(4) driver has been removed from the i386 and amd64 1787 kernel configuration files. This means uart(4) is now the 1788 default serial port driver on those platforms as well. 1789 1790 To prevent collisions with the sio(4) driver, the uart(4) driver 1791 uses different names for its device nodes. This means the 1792 onboard serial port will now most likely be called "ttyu0" 1793 instead of "ttyd0". You may need to reconfigure applications to 1794 use the new device names. 1795 1796 When using the serial port as a boot console, be sure to update 1797 /boot/device.hints and /etc/ttys before booting the new kernel. 1798 If you forget to do so, you can still manually specify the hints 1799 at the loader prompt: 1800 1801 set hint.uart.0.at="isa" 1802 set hint.uart.0.port="0x3F8" 1803 set hint.uart.0.flags="0x10" 1804 set hint.uart.0.irq="4" 1805 boot -s 1806 180720080609: 1808 The gpt(8) utility has been removed. Use gpart(8) to partition 1809 disks instead. 1810 181120080603: 1812 The version that Linuxulator emulates was changed from 2.4.2 1813 to 2.6.16. If you experience any problems with Linux binaries 1814 please try to set sysctl compat.linux.osrelease to 2.4.2 and 1815 if it fixes the problem contact emulation mailing list. 1816 181720080525: 1818 ISDN4BSD (I4B) was removed from the src tree. You may need to 1819 update a your kernel configuration and remove relevant entries. 1820 182120080509: 1822 I have checked in code to support multiple routing tables. 1823 See the man pages setfib(1) and setfib(2). 1824 This is a hopefully backwards compatible version, 1825 but to make use of it you need to compile your kernel 1826 with options ROUTETABLES=2 (or more up to 16). 1827 182820080420: 1829 The 802.11 wireless support was redone to enable multi-bss 1830 operation on devices that are capable. The underlying device 1831 is no longer used directly but instead wlanX devices are 1832 cloned with ifconfig. This requires changes to rc.conf files. 1833 For example, change: 1834 ifconfig_ath0="WPA DHCP" 1835 to 1836 wlans_ath0=wlan0 1837 ifconfig_wlan0="WPA DHCP" 1838 see rc.conf(5) for more details. In addition, mergemaster of 1839 /etc/rc.d is highly recommended. Simultaneous update of userland 1840 and kernel wouldn't hurt either. 1841 1842 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta 1843 modules were merged into the base wlan module. All references 1844 to these modules (e.g. in kernel config files) must be removed. 1845 184620080408: 1847 psm(4) has gained write(2) support in native operation level. 1848 Arbitrary commands can be written to /dev/psm%d and status can 1849 be read back from it. Therefore, an application is responsible 1850 for status validation and error recovery. It is a no-op in 1851 other operation levels. 1852 185320080312: 1854 Support for KSE threading has been removed from the kernel. To 1855 run legacy applications linked against KSE libmap.conf may 1856 be used. The following libmap.conf may be used to ensure 1857 compatibility with any prior release: 1858 1859 libpthread.so.1 libthr.so.1 1860 libpthread.so.2 libthr.so.2 1861 libkse.so.3 libthr.so.3 1862 186320080301: 1864 The layout of struct vmspace has changed. This affects libkvm 1865 and any executables that link against libkvm and use the 1866 kvm_getprocs() function. In particular, but not exclusively, 1867 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1). 1868 The effects are minimal, but it's advisable to upgrade world 1869 nonetheless. 1870 187120080229: 1872 The latest em driver no longer has support in it for the 1873 82575 adapter, this is now moved to the igb driver. The 1874 split was done to make new features that are incompatible 1875 with older hardware easier to do. 1876 187720080220: 1878 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4), 1879 likewise the kernel option is now GEOM_LINUX_LVM. 1880 188120080211: 1882 The default NFS mount mode has changed from UDP to TCP for 1883 increased reliability. If you rely on (insecurely) NFS 1884 mounting across a firewall you may need to update your 1885 firewall rules. 1886 188720080208: 1888 Belatedly note the addition of m_collapse for compacting 1889 mbuf chains. 1890 189120080126: 1892 The fts(3) structures have been changed to use adequate 1893 integer types for their members and so to be able to cope 1894 with huge file trees. The old fts(3) ABI is preserved 1895 through symbol versioning in libc, so third-party binaries 1896 using fts(3) should still work, although they will not take 1897 advantage of the extended types. At the same time, some 1898 third-party software might fail to build after this change 1899 due to unportable assumptions made in its source code about 1900 fts(3) structure members. Such software should be fixed 1901 by its vendor or, in the worst case, in the ports tree. 1902 FreeBSD_version 800015 marks this change for the unlikely 1903 case that a portable fix is impossible. 1904 190520080123: 1906 To upgrade to -current after this date, you must be running 1907 FreeBSD not older than 6.0-RELEASE. Upgrading to -current 1908 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems. 1909 191020071128: 1911 The ADAPTIVE_GIANT kernel option has been retired because its 1912 functionality is the default now. 1913 191420071118: 1915 The AT keyboard emulation of sunkbd(4) has been turned on 1916 by default. In order to make the special symbols of the Sun 1917 keyboards driven by sunkbd(4) work under X these now have 1918 to be configured the same way as Sun USB keyboards driven 1919 by ukbd(4) (which also does AT keyboard emulation), f.e.: 1920 1921 Option "XkbLayout" "us" 1922 Option "XkbRules" "xorg" 1923 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us" 1924 192520071024: 1926 It has been decided that it is desirable to provide ABI 1927 backwards compatibility to the FreeBSD 4/5/6 versions of the 1928 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was 1929 broken with the introduction of PCI domain support (see the 1930 20070930 entry). Unfortunately, this required the ABI of 1931 PCIOCGETCONF to be broken again in order to be able to 1932 provide backwards compatibility to the old version of that 1933 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled 1934 again. As for prominent ports this affects neither pciutils 1935 nor xorg-server this time, the hal port needs to be rebuilt 1936 however. 1937 193820071020: 1939 The misnamed kthread_create() and friends have been renamed 1940 to kproc_create() etc. Many of the callers already 1941 used kproc_start().. 1942 I will return kthread_create() and friends in a while 1943 with implementations that actually create threads, not procs. 1944 Renaming corresponds with version 800002. 1945 194620071010: 1947 RELENG_7 branched. 1948 1949COMMON ITEMS: 1950 1951 General Notes 1952 ------------- 1953 Avoid using make -j when upgrading. While generally safe, there are 1954 sometimes problems using -j to upgrade. If your upgrade fails with 1955 -j, please try again without -j. From time to time in the past there 1956 have been problems using -j with buildworld and/or installworld. This 1957 is especially true when upgrading between "distant" versions (eg one 1958 that cross a major release boundary or several minor releases, or when 1959 several months have passed on the -current branch). 1960 1961 Sometimes, obscure build problems are the result of environment 1962 poisoning. This can happen because the make utility reads its 1963 environment when searching for values for global variables. To run 1964 your build attempts in an "environmental clean room", prefix all make 1965 commands with 'env -i '. See the env(1) manual page for more details. 1966 1967 When upgrading from one major version to another it is generally best 1968 to upgrade to the latest code in the currently installed branch first, 1969 then do an upgrade to the new branch. This is the best-tested upgrade 1970 path, and has the highest probability of being successful. Please try 1971 this approach before reporting problems with a major version upgrade. 1972 1973 When upgrading a live system, having a root shell around before 1974 installing anything can help undo problems. Not having a root shell 1975 around can lead to problems if pam has changed too much from your 1976 starting point to allow continued authentication after the upgrade. 1977 1978 ZFS notes 1979 --------- 1980 When upgrading the boot ZFS pool to a new version, always follow 1981 these two steps: 1982 1983 1.) recompile and reinstall the ZFS boot loader and boot block 1984 (this is part of "make buildworld" and "make installworld") 1985 1986 2.) update the ZFS boot block on your boot drive 1987 1988 The following example updates the ZFS boot block on the first 1989 partition (freebsd-boot) of a GPT partitioned drive ad0: 1990 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0" 1991 1992 Non-boot pools do not need these updates. 1993 1994 To build a kernel 1995 ----------------- 1996 If you are updating from a prior version of FreeBSD (even one just 1997 a few days old), you should follow this procedure. It is the most 1998 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld, 1999 2000 make kernel-toolchain 2001 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE 2002 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE 2003 2004 To test a kernel once 2005 --------------------- 2006 If you just want to boot a kernel once (because you are not sure 2007 if it works, or if you want to boot a known bad kernel to provide 2008 debugging information) run 2009 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel 2010 nextboot -k testkernel 2011 2012 To just build a kernel when you know that it won't mess you up 2013 -------------------------------------------------------------- 2014 This assumes you are already running a CURRENT system. Replace 2015 ${arch} with the architecture of your machine (e.g. "i386", 2016 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc). 2017 2018 cd src/sys/${arch}/conf 2019 config KERNEL_NAME_HERE 2020 cd ../compile/KERNEL_NAME_HERE 2021 make depend 2022 make 2023 make install 2024 2025 If this fails, go to the "To build a kernel" section. 2026 2027 To rebuild everything and install it on the current system. 2028 ----------------------------------------------------------- 2029 # Note: sometimes if you are running current you gotta do more than 2030 # is listed here if you are upgrading from a really old current. 2031 2032 <make sure you have good level 0 dumps> 2033 make buildworld 2034 make kernel KERNCONF=YOUR_KERNEL_HERE 2035 [1] 2036 <reboot in single user> [3] 2037 mergemaster -p [5] 2038 make installworld 2039 mergemaster -i [4] 2040 make delete-old [6] 2041 <reboot> 2042 2043 To cross-install current onto a separate partition 2044 -------------------------------------------------- 2045 # In this approach we use a separate partition to hold 2046 # current's root, 'usr', and 'var' directories. A partition 2047 # holding "/", "/usr" and "/var" should be about 2GB in 2048 # size. 2049 2050 <make sure you have good level 0 dumps> 2051 <boot into -stable> 2052 make buildworld 2053 make buildkernel KERNCONF=YOUR_KERNEL_HERE 2054 <maybe newfs current's root partition> 2055 <mount current's root partition on directory ${CURRENT_ROOT}> 2056 make installworld DESTDIR=${CURRENT_ROOT} 2057 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd 2058 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT} 2059 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd 2060 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition> 2061 <reboot into current> 2062 <do a "native" rebuild/install as described in the previous section> 2063 <maybe install compatibility libraries from ports/misc/compat*> 2064 <reboot> 2065 2066 2067 To upgrade in-place from stable to current 2068 ---------------------------------------------- 2069 <make sure you have good level 0 dumps> 2070 make buildworld [9] 2071 make kernel KERNCONF=YOUR_KERNEL_HERE [8] 2072 [1] 2073 <reboot in single user> [3] 2074 mergemaster -p [5] 2075 make installworld 2076 mergemaster -i [4] 2077 make delete-old [6] 2078 <reboot> 2079 2080 Make sure that you've read the UPDATING file to understand the 2081 tweaks to various things you need. At this point in the life 2082 cycle of current, things change often and you are on your own 2083 to cope. The defaults can also change, so please read ALL of 2084 the UPDATING entries. 2085 2086 Also, if you are tracking -current, you must be subscribed to 2087 freebsd-current@freebsd.org. Make sure that before you update 2088 your sources that you have read and understood all the recent 2089 messages there. If in doubt, please track -stable which has 2090 much fewer pitfalls. 2091 2092 [1] If you have third party modules, such as vmware, you 2093 should disable them at this point so they don't crash your 2094 system on reboot. 2095 2096 [3] From the bootblocks, boot -s, and then do 2097 fsck -p 2098 mount -u / 2099 mount -a 2100 cd src 2101 adjkerntz -i # if CMOS is wall time 2102 Also, when doing a major release upgrade, it is required that 2103 you boot into single user mode to do the installworld. 2104 2105 [4] Note: This step is non-optional. Failure to do this step 2106 can result in a significant reduction in the functionality of the 2107 system. Attempting to do it by hand is not recommended and those 2108 that pursue this avenue should read this file carefully, as well 2109 as the archives of freebsd-current and freebsd-hackers mailing lists 2110 for potential gotchas. The -U option is also useful to consider. 2111 See mergemaster(8) for more information. 2112 2113 [5] Usually this step is a noop. However, from time to time 2114 you may need to do this if you get unknown user in the following 2115 step. It never hurts to do it all the time. You may need to 2116 install a new mergemaster (cd src/usr.sbin/mergemaster && make 2117 install) after the buildworld before this step if you last updated 2118 from current before 20130425 or from -stable before 20130430. 2119 2120 [6] This only deletes old files and directories. Old libraries 2121 can be deleted by "make delete-old-libs", but you have to make 2122 sure that no program is using those libraries anymore. 2123 2124 [8] In order to have a kernel that can run the 4.x binaries needed to 2125 do an installworld, you must include the COMPAT_FREEBSD4 option in 2126 your kernel. Failure to do so may leave you with a system that is 2127 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is 2128 required to run the 5.x binaries on more recent kernels. And so on 2129 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7. 2130 2131 Make sure that you merge any new devices from GENERIC since the 2132 last time you updated your kernel config file. 2133 2134 [9] When checking out sources, you must include the -P flag to have 2135 cvs prune empty directories. 2136 2137 If CPUTYPE is defined in your /etc/make.conf, make sure to use the 2138 "?=" instead of the "=" assignment operator, so that buildworld can 2139 override the CPUTYPE if it needs to. 2140 2141 MAKEOBJDIRPREFIX must be defined in an environment variable, and 2142 not on the command line, or in /etc/make.conf. buildworld will 2143 warn if it is improperly defined. 2144FORMAT: 2145 2146This file contains a list, in reverse chronological order, of major 2147breakages in tracking -current. It is not guaranteed to be a complete 2148list of such breakages, and only contains entries since October 10, 2007. 2149If you need to see UPDATING entries from before that date, you will need 2150to fetch an UPDATING file from an older FreeBSD release. 2151 2152Copyright information: 2153 2154Copyright 1998-2009 M. Warner Losh. All Rights Reserved. 2155 2156Redistribution, publication, translation and use, with or without 2157modification, in full or in part, in any form or format of this 2158document are permitted without further permission from the author. 2159 2160THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR 2161IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 2162WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 2163DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT, 2164INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 2165(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 2166SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2167HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 2168STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 2169IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 2170POSSIBILITY OF SUCH DAMAGE. 2171 2172Contact Warner Losh if you have any questions about your use of 2173this document. 2174 2175$FreeBSD: stable/10/UPDATING 282275 2015-04-30 16:08:47Z tijl $ 2176