UPDATING revision 283875
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 1920150601: 20 chmod, chflags, chown and chgrp now affect symlinks in -R mode as 21 defined in symlink(7); previously symlinks were silently ignored. 22 2320150430: 24 The const qualifier has been removed from iconv(3) to comply with 25 POSIX. The ports tree is aware of this from r384038 onwards. 26 2720141215: 28 At svn r275807, The default linux compat kernel ABI has been adjusted 29 to 2.6.18 in support of the linux-c6 compat ports infrastructure 30 update. If you wish to continue using the linux-f10 compat ports, 31 add compat.linux.osrelease=2.6.16 to your local sysctl.conf. Users are 32 encouraged to update their linux-compat packages to linux-c6 during 33 their next update cycle. 34 35 See ports/UPDATING 20141209 and 20141215 on migration to CentOS 6 ports. 36 3720141205: 38 pjdfstest has been integrated into kyua as an opt-in test suite. 39 Please see share/doc/pjdfstest/README for a more details on how to 40 execute it. 41 4220141118: 43 10.1-RELEASE. 44 4520140904: 46 The ofwfb driver, used to provide a graphics console on PowerPC when 47 using vt(4), no longer allows mmap() of all of physical memory. This 48 will prevent Xorg on PowerPC with some ATI graphics cards from 49 initializing properly unless x11-servers/xorg-server is updated to 50 1.12.4_8 or newer. 51 5220140831: 53 The libatf-c and libatf-c++ major versions were downgraded to 0 and 54 1 respectively to match the upstream numbers. They were out of 55 sync because, when they were originally added to FreeBSD, the 56 upstream versions were not respected. These libraries are private 57 and not yet built by default, so renumbering them should be a 58 non-issue. However, unclean source trees will yield broken test 59 programs once the operator executes "make delete-old-libs" after a 60 "make installworld". 61 62 Additionally, the atf-sh binary was made private by moving it into 63 /usr/libexec/. Already-built shell test programs will keep the 64 path to the old binary so they will break after "make delete-old" 65 is run. 66 67 If you are using WITH_TESTS=yes (not the default), wipe the object 68 tree and rebuild from scratch to prevent spurious test failures. 69 This is only needed once: the misnumbered libraries and misplaced 70 binaries have been added to OptionalObsoleteFiles.inc so they will 71 be removed during a clean upgrade. 72 7320140814: 74 The ixgbe tunables now match their sysctl counterparts, for example: 75 hw.ixgbe.enable_aim => hw.ix.enable_aim 76 Anyone using ixgbe tunables should ensure they update /boot/loader.conf. 77 7820140801: 79 The NFSv4.1 server committed by r269398 changes the internal 80 function call interfaces used between the NFS and krpc modules. 81 As such, __FreeBSD_version was bumped. 82 8320140729: 84 The default unbound configuration has been modified to address 85 issues with reverse lookups on networks that use private 86 address ranges. If you use the local_unbound service, run 87 "service local_unbound setup" as root to regenerate your 88 configuration, then "service local_unbound reload" to load the 89 new configuration. 90 9120140717: 92 It is no longer necessary to include the dwarf version in your DEBUG 93 options in your kernel config file. The bug that required it to be 94 placed in the config file has bene fixed. DEBUG should now just 95 contain -g. The build system will automatically update things 96 to do the right thing. 97 9820140715: 99 Several ABI breaking changes were merged to CTL and new iSCSI code. 100 All CTL and iSCSI-related tools, such as ctladm, ctld, iscsid and 101 iscsictl need to be rebuilt to work with a new kernel. 102 10320140708: 104 The WITHOUT_VT_SUPPORT kernel config knob has been renamed 105 WITHOUT_VT. (The other _SUPPORT knobs have a consistent meaning 106 which differs from the behaviour controlled by this knob.) 107 10820140608: 109 On i386 and amd64 systems, the onifconsole flag is now set by default 110 in /etc/ttys for ttyu0. This causes ttyu0 to be automatically enabled 111 as a login TTY if it is set in the bootloader as an active kernel 112 console. No changes in behavior should result otherwise. To revert to 113 the previous behavior, set ttyu0 to "off" in /etc/ttys. 114 11520140512: 116 Clang and llvm have been upgraded to 3.4.1 release. 117 11820140321: 119 Clang and llvm have been upgraded to 3.4 release. 120 12120140306: 122 If a Makefile in a tests/ directory was auto-generating a Kyuafile 123 instead of providing an explicit one, this would prevent such 124 Makefile from providing its own Kyuafile in the future during 125 NO_CLEAN builds. This has been fixed in the Makefiles but manual 126 intervention is needed to clean an objdir if you use NO_CLEAN: 127 # find /usr/obj -name Kyuafile | xargs rm -f 128 12920140303: 130 OpenSSH will now ignore errors caused by kernel lacking of Capsicum 131 capability mode support. Please note that enabling the feature in 132 kernel is still highly recommended. 133 13420140227: 135 OpenSSH is now built with sandbox support, and will use sandbox as 136 the default privilege separation method. This requires Capsicum 137 capability mode support in kernel. 138 13920140216: 140 The nve(4) driver for NVIDIA nForce MCP Ethernet adapters has 141 been deprecated and will not be part of FreeBSD 11.0 and later 142 releases. If you use this driver, please consider switching to 143 the nfe(4) driver instead. 144 14520140120: 146 10.0-RELEASE. 147 14820131216: 149 The behavior of gss_pseudo_random() for the krb5 mechanism 150 has changed, for applications requesting a longer random string 151 than produced by the underlying enctype's pseudo-random() function. 152 In particular, the random string produced from a session key of 153 enctype aes256-cts-hmac-sha1-96 or aes256-cts-hmac-sha1-96 will 154 be different at the 17th octet and later, after this change. 155 The counter used in the PRF+ construction is now encoded as a 156 big-endian integer in accordance with RFC 4402. 157 __FreeBSD_version is bumped to 1000701. 158 15920131108: 160 The WITHOUT_ATF build knob has been removed and its functionality 161 has been subsumed into the more generic WITHOUT_TESTS. If you were 162 using the former to disable the build of the ATF libraries, you 163 should change your settings to use the latter. 164 16520131031: 166 The default version of mtree is nmtree which is obtained from 167 NetBSD. The output is generally the same, but may vary 168 slightly. If you found you need identical output adding 169 "-F freebsd9" to the command line should do the trick. For the 170 time being, the old mtree is available as fmtree. 171 17220131014: 173 libbsdyml has been renamed to libyaml and moved to /usr/lib/private. 174 This will break ports-mgmt/pkg. Rebuild the port, or upgrade to pkg 175 1.1.4_8 and verify bsdyml not linked in, before running "make 176 delete-old-libs": 177 # make -C /usr/ports/ports-mgmt/pkg build deinstall install clean 178 or 179 # pkg install pkg; ldd /usr/local/sbin/pkg | grep bsdyml 180 18120131010: 182 The rc.d/jail script has been updated to support jail(8) 183 configuration file. The "jail_<jname>_*" rc.conf(5) variables 184 for per-jail configuration are automatically converted to 185 /var/run/jail.<jname>.conf before the jail(8) utility is invoked. 186 This is transparently backward compatible. See below about some 187 incompatibilities and rc.conf(5) manual page for more details. 188 189 These variables are now deprecated in favor of jail(8) configuration 190 file. One can use "rc.d/jail config <jname>" command to generate 191 a jail(8) configuration file in /var/run/jail.<jname>.conf without 192 running the jail(8) utility. The default pathname of the 193 configuration file is /etc/jail.conf and can be specified by 194 using $jail_conf or $jail_<jname>_conf variables. 195 196 Please note that jail_devfs_ruleset accepts an integer at 197 this moment. Please consider to rewrite the ruleset name 198 with an integer. 199 20020130930: 201 BIND has been removed from the base system. If all you need 202 is a local resolver, simply enable and start the local_unbound 203 service instead. Otherwise, several versions of BIND are 204 available in the ports tree. The dns/bind99 port is one example. 205 206 With this change, nslookup(1) and dig(1) are no longer in the base 207 system. Users should instead use host(1) and drill(1) which are 208 in the base system. Alternatively, nslookup and dig can 209 be obtained by installing the dns/bind-tools port. 210 21120130916: 212 With the addition of unbound(8), a new unbound user is now 213 required during installworld. "mergemaster -p" can be used to 214 add the user prior to installworld, as documented in the handbook. 215 21620130911: 217 OpenSSH is now built with DNSSEC support, and will by default 218 silently trust signed SSHFP records. This can be controlled with 219 the VerifyHostKeyDNS client configuration setting. DNSSEC support 220 can be disabled entirely with the WITHOUT_LDNS option in src.conf. 221 22220130906: 223 The GNU Compiler Collection and C++ standard library (libstdc++) 224 are no longer built by default on platforms where clang is the system 225 compiler. You can enable them with the WITH_GCC and WITH_GNUCXX 226 options in src.conf. 227 22820130905: 229 The PROCDESC kernel option is now part of the GENERIC kernel 230 configuration and is required for the rwhod(8) to work. 231 If you are using custom kernel configuration, you should include 232 'options PROCDESC'. 233 23420130905: 235 The API and ABI related to the Capsicum framework was modified 236 in backward incompatible way. The userland libraries and programs 237 have to be recompiled to work with the new kernel. This includes the 238 following libraries and programs, but the whole buildworld is 239 advised: libc, libprocstat, dhclient, tcpdump, hastd, hastctl, 240 kdump, procstat, rwho, rwhod, uniq. 241 24220130903: 243 AES-NI intrinsic support has been added to gcc. The AES-NI module 244 has been updated to use this support. A new gcc is required to build 245 the aesni module on both i386 and amd64. 246 24720130821: 248 The PADLOCK_RNG and RDRAND_RNG kernel options are now devices. 249 Thus "device padlock_rng" and "device rdrand_rng" should be 250 used instead of "options PADLOCK_RNG" & "options RDRAND_RNG". 251 25220130813: 253 WITH_ICONV has been split into two feature sets. WITH_ICONV now 254 enables just the iconv* functionality and is now on by default. 255 WITH_LIBICONV_COMPAT enables the libiconv api and link time 256 compatability. Set WITHOUT_ICONV to build the old way. 257 If you have been using WITH_ICONV before, you will very likely 258 need to turn on WITH_LIBICONV_COMPAT. 259 26020130806: 261 INVARIANTS option now enables DEBUG for code with OpenSolaris and 262 Illumos origin, including ZFS. If you have INVARIANTS in your 263 kernel configuration, then there is no need to set DEBUG or ZFS_DEBUG 264 explicitly. 265 DEBUG used to enable witness(9) tracking of OpenSolaris (mostly ZFS) 266 locks if WITNESS option was set. Because that generated a lot of 267 witness(9) reports and all of them were believed to be false 268 positives, this is no longer done. New option OPENSOLARIS_WITNESS 269 can be used to achieve the previous behavior. 270 27120130806: 272 Timer values in IPv6 data structures now use time_uptime instead 273 of time_second. Although this is not a user-visible functional 274 change, userland utilities which directly use them---ndp(8), 275 rtadvd(8), and rtsold(8) in the base system---need to be updated 276 to r253970 or later. 277 27820130802: 279 find -delete can now delete the pathnames given as arguments, 280 instead of only files found below them or if the pathname did 281 not contain any slashes. Formerly, the following error message 282 would result: 283 284 find: -delete: <path>: relative path potentially not safe 285 286 Deleting the pathnames given as arguments can be prevented 287 without error messages using -mindepth 1 or by changing 288 directory and passing "." as argument to find. This works in the 289 old as well as the new version of find. 290 29120130726: 292 Behavior of devfs rules path matching has been changed. 293 Pattern is now always matched against fully qualified devfs 294 path and slash characters must be explicitly matched by 295 slashes in pattern (FNM_PATHNAME). Rulesets involving devfs 296 subdirectories must be reviewed. 297 29820130716: 299 The default ARM ABI has changed to the ARM EABI. The old ABI is 300 incompatible with the ARM EABI and all programs and modules will 301 need to be rebuilt to work with a new kernel. 302 303 To keep using the old ABI ensure the WITHOUT_ARM_EABI knob is set. 304 305 NOTE: Support for the old ABI will be removed in the future and 306 users are advised to upgrade. 307 30820130709: 309 pkg_install has been disconnected from the build if you really need it 310 you should add WITH_PKGTOOLS in your src.conf(5). 311 31220130709: 313 Most of network statistics structures were changed to be able 314 keep 64-bits counters. Thus all tools, that work with networking 315 statistics, must be rebuilt (netstat(1), bsnmpd(1), etc.) 316 31720130629: 318 Fix targets that run multiple make's to use && rather than ; 319 so that subsequent steps depend on success of previous. 320 321 NOTE: if building 'universe' with -j* on stable/8 or stable/9 322 it would be better to start the build using bmake, to avoid 323 overloading the machine. 324 32520130618: 326 Fix a bug that allowed a tracing process (e.g. gdb) to write 327 to a memory-mapped file in the traced process's address space 328 even if neither the traced process nor the tracing process had 329 write access to that file. 330 33120130615: 332 CVS has been removed from the base system. An exact copy 333 of the code is available from the devel/cvs port. 334 33520130613: 336 Some people report the following error after the switch to bmake: 337 338 make: illegal option -- J 339 usage: make [-BPSXeiknpqrstv] [-C directory] [-D variable] 340 ... 341 *** [buildworld] Error code 2 342 343 this likely due to an old instance of make in 344 ${MAKEPATH} (${MAKEOBJDIRPREFIX}${.CURDIR}/make.${MACHINE}) 345 which src/Makefile will use that blindly, if it exists, so if 346 you see the above error: 347 348 rm -rf `make -V MAKEPATH` 349 350 should resolve it. 351 35220130516: 353 Use bmake by default. 354 Whereas before one could choose to build with bmake via 355 -DWITH_BMAKE one must now use -DWITHOUT_BMAKE to use the old 356 make. The goal is to remove these knobs for 10-RELEASE. 357 358 It is worth noting that bmake (like gmake) treats the command 359 line as the unit of failure, rather than statements within the 360 command line. Thus '(cd some/where && dosomething)' is safer 361 than 'cd some/where; dosomething'. The '()' allows consistent 362 behavior in parallel build. 363 36420130429: 365 Fix a bug that allows NFS clients to issue READDIR on files. 366 36720130426: 368 The WITHOUT_IDEA option has been removed because 369 the IDEA patent expired. 370 37120130426: 372 The sysctl which controls TRIM support under ZFS has been renamed 373 from vfs.zfs.trim_disable -> vfs.zfs.trim.enabled and has been 374 enabled by default. 375 37620130425: 377 The mergemaster command now uses the default MAKEOBJDIRPREFIX 378 rather than creating it's own in the temporary directory in 379 order allow access to bootstrapped versions of tools such as 380 install and mtree. When upgrading from version of FreeBSD where 381 the install command does not support -l, you will need to 382 install a new mergemaster command if mergemaster -p is required. 383 This can be accomplished with the command (cd src/usr.sbin/mergemaster 384 && make install). 385 38620130404: 387 Legacy ATA stack, disabled and replaced by new CAM-based one since 388 FreeBSD 9.0, completely removed from the sources. Kernel modules 389 atadisk and atapi*, user-level tools atacontrol and burncd are 390 removed. Kernel option `options ATA_CAM` is now permanently enabled 391 and removed. 392 39320130319: 394 SOCK_CLOEXEC and SOCK_NONBLOCK flags have been added to socket(2) 395 and socketpair(2). Software, in particular Kerberos, may 396 automatically detect and use these during building. The resulting 397 binaries will not work on older kernels. 398 39920130308: 400 CTL_DISABLE has also been added to the sparc64 GENERIC (for further 401 information, see the respective 20130304 entry). 402 40320130304: 404 Recent commits to callout(9) changed the size of struct callout, 405 so the KBI is probably heavily disturbed. Also, some functions 406 in callout(9)/sleep(9)/sleepqueue(9)/condvar(9) KPIs were replaced 407 by macros. Every kernel module using it won't load, so rebuild 408 is requested. 409 410 The ctl device has been re-enabled in GENERIC for i386 and amd64, 411 but does not initialize by default (because of the new CTL_DISABLE 412 option) to save memory. To re-enable it, remove the CTL_DISABLE 413 option from the kernel config file or set kern.cam.ctl.disable=0 414 in /boot/loader.conf. 415 41620130301: 417 The ctl device has been disabled in GENERIC for i386 and amd64. 418 This was done due to the extra memory being allocated at system 419 initialisation time by the ctl driver which was only used if 420 a CAM target device was created. This makes a FreeBSD system 421 unusable on 128MB or less of RAM. 422 42320130208: 424 A new compression method (lz4) has been merged to -HEAD. Please 425 refer to zpool-features(7) for more information. 426 427 Please refer to the "ZFS notes" section of this file for information 428 on upgrading boot ZFS pools. 429 43020130129: 431 A BSD-licensed patch(1) variant has been added and is installed 432 as bsdpatch, being the GNU version the default patch. 433 To inverse the logic and use the BSD-licensed one as default, 434 while having the GNU version installed as gnupatch, rebuild 435 and install world with the WITH_BSD_PATCH knob set. 436 43720130121: 438 Due to the use of the new -l option to install(1) during build 439 and install, you must take care not to directly set the INSTALL 440 make variable in your /etc/make.conf, /etc/src.conf, or on the 441 command line. If you wish to use the -C flag for all installs 442 you may be able to add INSTALL+=-C to /etc/make.conf or 443 /etc/src.conf. 444 44520130118: 446 The install(1) option -M has changed meaning and now takes an 447 argument that is a file or path to append logs to. In the 448 unlikely event that -M was the last option on the command line 449 and the command line contained at least two files and a target 450 directory the first file will have logs appended to it. The -M 451 option served little practical purpose in the last decade so its 452 use is expected to be extremely rare. 453 45420121223: 455 After switching to Clang as the default compiler some users of ZFS 456 on i386 systems started to experience stack overflow kernel panics. 457 Please consider using 'options KSTACK_PAGES=4' in such configurations. 458 45920121222: 460 GEOM_LABEL now mangles label names read from file system metadata. 461 Mangling affect labels containing spaces, non-printable characters, 462 '%' or '"'. Device names in /etc/fstab and other places may need to 463 be updated. 464 46520121217: 466 By default, only the 10 most recent kernel dumps will be saved. To 467 restore the previous behaviour (no limit on the number of kernel dumps 468 stored in the dump directory) add the following line to /etc/rc.conf: 469 470 savecore_flags="" 471 47220121201: 473 With the addition of auditdistd(8), a new auditdistd user is now 474 required during installworld. "mergemaster -p" can be used to 475 add the user prior to installworld, as documented in the handbook. 476 47720121117: 478 The sin6_scope_id member variable in struct sockaddr_in6 is now 479 filled by the kernel before passing the structure to the userland via 480 sysctl or routing socket. This means the KAME-specific embedded scope 481 id in sin6_addr.s6_addr[2] is always cleared in userland application. 482 This behavior can be controlled by net.inet6.ip6.deembed_scopeid. 483 __FreeBSD_version is bumped to 1000025. 484 48520121105: 486 On i386 and amd64 systems WITH_CLANG_IS_CC is now the default. 487 This means that the world and kernel will be compiled with clang 488 and that clang will be installed as /usr/bin/cc, /usr/bin/c++, 489 and /usr/bin/cpp. To disable this behavior and revert to building 490 with gcc, compile with WITHOUT_CLANG_IS_CC. Really old versions 491 of current may need to bootstrap WITHOUT_CLANG first if the clang 492 build fails (its compatibility window doesn't extend to the 9 stable 493 branch point). 494 49520121102: 496 The IPFIREWALL_FORWARD kernel option has been removed. Its 497 functionality now turned on by default. 498 49920121023: 500 The ZERO_COPY_SOCKET kernel option has been removed and 501 split into SOCKET_SEND_COW and SOCKET_RECV_PFLIP. 502 NB: SOCKET_SEND_COW uses the VM page based copy-on-write 503 mechanism which is not safe and may result in kernel crashes. 504 NB: The SOCKET_RECV_PFLIP mechanism is useless as no current 505 driver supports disposeable external page sized mbuf storage. 506 Proper replacements for both zero-copy mechanisms are under 507 consideration and will eventually lead to complete removal 508 of the two kernel options. 509 51020121023: 511 The IPv4 network stack has been converted to network byte 512 order. The following modules need to be recompiled together 513 with kernel: carp(4), divert(4), gif(4), siftr(4), gre(4), 514 pf(4), ipfw(4), ng_ipfw(4), stf(4). 515 51620121022: 517 Support for non-MPSAFE filesystems was removed from VFS. The 518 VFS_VERSION was bumped, all filesystem modules shall be 519 recompiled. 520 52120121018: 522 All the non-MPSAFE filesystems have been disconnected from 523 the build. The full list includes: codafs, hpfs, ntfs, nwfs, 524 portalfs, smbfs, xfs. 525 52620121016: 527 The interface cloning API and ABI has changed. The following 528 modules need to be recompiled together with kernel: 529 ipfw(4), pfsync(4), pflog(4), usb(4), wlan(4), stf(4), 530 vlan(4), disc(4), edsc(4), if_bridge(4), gif(4), tap(4), 531 faith(4), epair(4), enc(4), tun(4), if_lagg(4), gre(4). 532 53320121015: 534 The sdhci driver was split in two parts: sdhci (generic SD Host 535 Controller logic) and sdhci_pci (actual hardware driver). 536 No kernel config modifications are required, but if you 537 load sdhc as a module you must switch to sdhci_pci instead. 538 53920121014: 540 Import the FUSE kernel and userland support into base system. 541 54220121013: 543 The GNU sort(1) program has been removed since the BSD-licensed 544 sort(1) has been the default for quite some time and no serious 545 problems have been reported. The corresponding WITH_GNU_SORT 546 knob has also gone. 547 54820121006: 549 The pfil(9) API/ABI for AF_INET family has been changed. Packet 550 filtering modules: pf(4), ipfw(4), ipfilter(4) need to be recompiled 551 with new kernel. 552 55320121001: 554 The net80211(4) ABI has been changed to allow for improved driver 555 PS-POLL and power-save support. All wireless drivers need to be 556 recompiled to work with the new kernel. 557 55820120913: 559 The random(4) support for the VIA hardware random number 560 generator (`PADLOCK') is no longer enabled unconditionally. 561 Add the padlock_rng device in the custom kernel config if 562 needed. The GENERIC kernels on i386 and amd64 do include the 563 device, so the change only affects the custom kernel 564 configurations. 565 56620120908: 567 The pf(4) packet filter ABI has been changed. pfctl(8) and 568 snmp_pf module need to be recompiled to work with new kernel. 569 57020120828: 571 A new ZFS feature flag "com.delphix:empty_bpobj" has been merged 572 to -HEAD. Pools that have empty_bpobj in active state can not be 573 imported read-write with ZFS implementations that do not support 574 this feature. For more information read the zpool-features(5) 575 manual page. 576 57720120727: 578 The sparc64 ZFS loader has been changed to no longer try to auto- 579 detect ZFS providers based on diskN aliases but now requires these 580 to be explicitly listed in the OFW boot-device environment variable. 581 58220120712: 583 The OpenSSL has been upgraded to 1.0.1c. Any binaries requiring 584 libcrypto.so.6 or libssl.so.6 must be recompiled. Also, there are 585 configuration changes. Make sure to merge /etc/ssl/openssl.cnf. 586 58720120712: 588 The following sysctls and tunables have been renamed for consistency 589 with other variables: 590 kern.cam.da.da_send_ordered -> kern.cam.da.send_ordered 591 kern.cam.ada.ada_send_ordered -> kern.cam.ada.send_ordered 592 59320120628: 594 The sort utility has been replaced with BSD sort. For now, GNU sort 595 is also available as "gnusort" or the default can be set back to 596 GNU sort by setting WITH_GNU_SORT. In this case, BSD sort will be 597 installed as "bsdsort". 598 59920120611: 600 A new version of ZFS (pool version 5000) has been merged to -HEAD. 601 Starting with this version the old system of ZFS pool versioning 602 is superseded by "feature flags". This concept enables forward 603 compatibility against certain future changes in functionality of ZFS 604 pools. The first read-only compatible "feature flag" for ZFS pools 605 is named "com.delphix:async_destroy". For more information 606 read the new zpool-features(5) manual page. 607 Please refer to the "ZFS notes" section of this file for information 608 on upgrading boot ZFS pools. 609 61020120417: 611 The malloc(3) implementation embedded in libc now uses sources imported 612 as contrib/jemalloc. The most disruptive API change is to 613 /etc/malloc.conf. If your system has an old-style /etc/malloc.conf, 614 delete it prior to installworld, and optionally re-create it using the 615 new format after rebooting. See malloc.conf(5) for details 616 (specifically the TUNING section and the "opt.*" entries in the MALLCTL 617 NAMESPACE section). 618 61920120328: 620 Big-endian MIPS TARGET_ARCH values no longer end in "eb". mips64eb 621 is now spelled mips64. mipsn32eb is now spelled mipsn32. mipseb is 622 now spelled mips. This is to aid compatibility with third-party 623 software that expects this naming scheme in uname(3). Little-endian 624 settings are unchanged. If you are updating a big-endian mips64 machine 625 from before this change, you may need to set MACHINE_ARCH=mips64 in 626 your environment before the new build system will recognize your machine. 627 62820120306: 629 Disable by default the option VFS_ALLOW_NONMPSAFE for all supported 630 platforms. 631 63220120229: 633 Now unix domain sockets behave "as expected" on nullfs(5). Previously 634 nullfs(5) did not pass through all behaviours to the underlying layer, 635 as a result if we bound to a socket on the lower layer we could connect 636 only to the lower path; if we bound to the upper layer we could connect 637 only to the upper path. The new behavior is one can connect to both the 638 lower and the upper paths regardless what layer path one binds to. 639 64020120211: 641 The getifaddrs upgrade path broken with 20111215 has been restored. 642 If you have upgraded in between 20111215 and 20120209 you need to 643 recompile libc again with your kernel. You still need to recompile 644 world to be able to configure CARP but this restriction already 645 comes from 20111215. 646 64720120114: 648 The set_rcvar() function has been removed from /etc/rc.subr. All 649 base and ports rc.d scripts have been updated, so if you have a 650 port installed with a script in /usr/local/etc/rc.d you can either 651 hand-edit the rcvar= line, or reinstall the port. 652 653 An easy way to handle the mass-update of /etc/rc.d: 654 rm /etc/rc.d/* && mergemaster -i 655 65620120109: 657 panic(9) now stops other CPUs in the SMP systems, disables interrupts 658 on the current CPU and prevents other threads from running. 659 This behavior can be reverted using the kern.stop_scheduler_on_panic 660 tunable/sysctl. 661 The new behavior can be incompatible with kern.sync_on_panic. 662 66320111215: 664 The carp(4) facility has been changed significantly. Configuration 665 of the CARP protocol via ifconfig(8) has changed, as well as format 666 of CARP events submitted to devd(8) has changed. See manual pages 667 for more information. The arpbalance feature of carp(4) is currently 668 not supported anymore. 669 670 Size of struct in_aliasreq, struct in6_aliasreq has changed. User 671 utilities using SIOCAIFADDR, SIOCAIFADDR_IN6, e.g. ifconfig(8), 672 need to be recompiled. 673 67420111122: 675 The acpi_wmi(4) status device /dev/wmistat has been renamed to 676 /dev/wmistat0. 677 67820111108: 679 The option VFS_ALLOW_NONMPSAFE option has been added in order to 680 explicitely support non-MPSAFE filesystems. 681 It is on by default for all supported platform at this present 682 time. 683 68420111101: 685 The broken amd(4) driver has been replaced with esp(4) in the amd64, 686 i386 and pc98 GENERIC kernel configuration files. 687 68820110930: 689 sysinstall has been removed 690 69120110923: 692 The stable/9 branch created in subversion. This corresponds to the 693 RELENG_9 branch in CVS. 694 69520110913: 696 This commit modifies vfs_register() so that it uses a hash 697 calculation to set vfc_typenum, which is enabled by default. 698 The first time a system is booted after this change, the 699 vfc_typenum values will change for all file systems. The 700 main effect of this is a change to the NFS server file handles 701 for file systems that use vfc_typenum in their fsid, such as ZFS. 702 It will, however, prevent vfc_typenum from changing when file 703 systems are loaded in a different order for subsequent reboots. 704 To disable this, you can set vfs.typenumhash=0 in /boot/loader.conf 705 until you are ready to remount all NFS clients after a reboot. 706 70720110828: 708 Bump the shared library version numbers for libraries that 709 do not use symbol versioning, have changed the ABI compared 710 to stable/8 and which shared library version was not bumped. 711 Done as part of 9.0-RELEASE cycle. 712 71320110815: 714 During the merge of Capsicum features, the fget(9) KPI was modified. 715 This may require the rebuilding of out-of-tree device drivers -- 716 issues have been reported specifically with the nVidia device driver. 717 __FreeBSD_version is bumped to 900041. 718 719 Also, there is a period between 20110811 and 20110814 where the 720 special devices /dev/{stdin,stdout,stderr} did not work correctly. 721 Building world from a kernel during that window may not work. 722 72320110628: 724 The packet filter (pf) code has been updated to OpenBSD 4.5. 725 You need to update userland tools to be in sync with kernel. 726 This update breaks backward compatibility with earlier pfsync(4) 727 versions. Care must be taken when updating redundant firewall setups. 728 72920110608: 730 The following sysctls and tunables are retired on x86 platforms: 731 machdep.hlt_cpus 732 machdep.hlt_logical_cpus 733 The following sysctl is retired: 734 machdep.hyperthreading_allowed 735 The sysctls were supposed to provide a way to dynamically offline and 736 online selected CPUs on x86 platforms, but the implementation has not 737 been reliable especially with SCHED_ULE scheduler. 738 machdep.hyperthreading_allowed tunable is still available to ignore 739 hyperthreading CPUs at OS level. 740 Individual CPUs can be disabled using hint.lapic.X.disabled tunable, 741 where X is an APIC ID of a CPU. Be advised, though, that disabling 742 CPUs in non-uniform fashion will result in non-uniform topology and 743 may lead to sub-optimal system performance with SCHED_ULE, which is 744 a default scheduler. 745 74620110607: 747 cpumask_t type is retired and cpuset_t is used in order to describe 748 a mask of CPUs. 749 75020110531: 751 Changes to ifconfig(8) for dynamic address family detection mandate 752 that you are running a kernel of 20110525 or later. Make sure to 753 follow the update procedure to boot a new kernel before installing 754 world. 755 75620110513: 757 Support for sun4v architecture is officially dropped 758 75920110503: 760 Several KPI breaking changes have been committed to the mii(4) layer, 761 the PHY drivers and consequently some Ethernet drivers using mii(4). 762 This means that miibus.ko and the modules of the affected Ethernet 763 drivers need to be recompiled. 764 765 Note to kernel developers: Given that the OUI bit reversion problem 766 was fixed as part of these changes all mii(4) commits related to OUIs, 767 i.e. to sys/dev/mii/miidevs, PHY driver probing and vendor specific 768 handling, no longer can be merged verbatim to stable/8 and previous 769 branches. 770 77120110430: 772 Users of the Atheros AR71xx SoC code now need to add 'device ar71xx_pci' 773 into their kernel configurations along with 'device pci'. 774 77520110427: 776 The default NFS client is now the new NFS client, so fstype "newnfs" 777 is now "nfs" and the regular/old NFS client is now fstype "oldnfs". 778 Although mounts via fstype "nfs" will usually work without userland 779 changes, it is recommended that the mount(8) and mount_nfs(8) 780 commands be rebuilt from sources and that a link to mount_nfs called 781 mount_oldnfs be created. The new client is compiled into the 782 kernel with "options NFSCL" and this is needed for diskless root 783 file systems. The GENERIC kernel configs have been changed to use 784 NFSCL and NFSD (the new server) instead of NFSCLIENT and NFSSERVER. 785 To use the regular/old client, you can "mount -t oldnfs ...". For 786 a diskless root file system, you must also include a line like: 787 788 vfs.root.mountfrom="oldnfs:" 789 790 in the boot/loader.conf on the root fs on the NFS server to make 791 a diskless root fs use the old client. 792 79320110424: 794 The GENERIC kernels for all architectures now default to the new 795 CAM-based ATA stack. It means that all legacy ATA drivers were 796 removed and replaced by respective CAM drivers. If you are using 797 ATA device names in /etc/fstab or other places, make sure to update 798 them respectively (adX -> adaY, acdX -> cdY, afdX -> daY, astX -> saY, 799 where 'Y's are the sequential numbers starting from zero for each type 800 in order of detection, unless configured otherwise with tunables, 801 see cam(4)). There will be symbolic links created in /dev/ to map 802 old adX devices to the respective adaY. They should provide basic 803 compatibility for file systems mounting in most cases, but they do 804 not support old user-level APIs and do not have respective providers 805 in GEOM. Consider using updated management tools with new device names. 806 807 It is possible to load devices ahci, ata, siis and mvs as modules, 808 but option ATA_CAM should remain in kernel configuration to make ata 809 module work as CAM driver supporting legacy ATA controllers. Device ata 810 still can be used in modular fashion (atacore + ...). Modules atadisk 811 and atapi* are not used and won't affect operation in ATA_CAM mode. 812 Note that to use CAM-based ATA kernel should include CAM devices 813 scbus, pass, da (or explicitly ada), cd and optionally others. All of 814 them are parts of the cam module. 815 816 ataraid(4) functionality is now supported by the RAID GEOM class. 817 To use it you can load geom_raid kernel module and use graid(8) tool 818 for management. Instead of /dev/arX device names, use /dev/raid/rX. 819 820 No kernel config options or code have been removed, so if a problem 821 arises, please report it and optionally revert to the old ATA stack. 822 In order to do it you can remove from the kernel config: 823 options ATA_CAM 824 device ahci 825 device mvs 826 device siis 827 , and instead add back: 828 device atadisk # ATA disk drives 829 device ataraid # ATA RAID drives 830 device atapicd # ATAPI CDROM drives 831 device atapifd # ATAPI floppy drives 832 device atapist # ATAPI tape drives 833 83420110423: 835 The default NFS server has been changed to the new server, which 836 was referred to as the experimental server. If you need to switch 837 back to the old NFS server, you must now put the "-o" option on 838 both the mountd and nfsd commands. This can be done using the 839 mountd_flags and nfs_server_flags rc.conf variables until an 840 update to the rc scripts is committed, which is coming soon. 841 84220110418: 843 The GNU Objective-C runtime library (libobjc), and other Objective-C 844 related components have been removed from the base system. If you 845 require an Objective-C library, please use one of the available ports. 846 84720110331: 848 ath(4) has been split into bus- and device- modules. if_ath contains 849 the HAL, the TX rate control and the network device code. if_ath_pci 850 contains the PCI bus glue. For Atheros MIPS embedded systems, if_ath_ahb 851 contains the AHB glue. Users need to load both if_ath_pci and if_ath 852 in order to use ath on everything else. 853 854 TO REPEAT: if_ath_ahb is not needed for normal users. Normal users only 855 need to load if_ath and if_ath_pci for ath(4) operation. 856 85720110314: 858 As part of the replacement of sysinstall, the process of building 859 release media has changed significantly. For details, please re-read 860 release(7), which has been updated to reflect the new build process. 861 86220110218: 863 GNU binutils 2.17.50 (as of 2007-07-03) has been merged to -HEAD. This 864 is the last available version under GPLv2. It brings a number of new 865 features, such as support for newer x86 CPU's (with SSE-3, SSSE-3, SSE 866 4.1 and SSE 4.2), better support for powerpc64, a number of new 867 directives, and lots of other small improvements. See the ChangeLog 868 file in contrib/binutils for the full details. 869 87020110218: 871 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868 872 compliant, and will now use half of hash for authentication. 873 This will break interoperability with all stacks (including all 874 actual FreeBSD versions) who implement 875 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for 876 authentication). 877 The only workaround with such peers is to use another HMAC 878 algorithm for IPsec ("phase 2") authentication. 879 88020110207: 881 Remove the uio_yield prototype and symbol. This function has 882 been misnamed since it was introduced and should not be 883 globally exposed with this name. The equivalent functionality 884 is now available using kern_yield(curthread->td_user_pri). 885 The function remains undocumented. 886 88720110112: 888 A SYSCTL_[ADD_]UQUAD was added for unsigned uint64_t pointers, 889 symmetric with the existing SYSCTL_[ADD_]QUAD. Type checking 890 for scalar sysctls is defined but disabled. Code that needs 891 UQUAD to pass the type checking that must compile on older 892 systems where the define is not present can check against 893 __FreeBSD_version >= 900030. 894 895 The system dialog(1) has been replaced with a new version previously 896 in ports as devel/cdialog. dialog(1) is mostly command-line compatible 897 with the previous version, but the libdialog associated with it has 898 a largely incompatible API. As such, the original version of libdialog 899 will be kept temporarily as libodialog, until its base system consumers 900 are replaced or updated. Bump __FreeBSD_version to 900030. 901 90220110103: 903 If you are trying to run make universe on a -stable system, and you get 904 the following warning: 905 "Makefile", line 356: "Target architecture for i386/conf/GENERIC 906 unknown. config(8) likely too old." 907 or something similar to it, then you must upgrade your -stable system 908 to 8.2-Release or newer (really, any time after r210146 7/15/2010 in 909 stable/8) or build the config from the latest stable/8 branch and 910 install it on your system. 911 912 Prior to this date, building a current universe on 8-stable system from 913 between 7/15/2010 and 1/2/2011 would result in a weird shell parsing 914 error in the first kernel build phase. A new config on those old 915 systems will fix that problem for older versions of -current. 916 91720101228: 918 The TCP stack has been modified to allow Khelp modules to interact with 919 it via helper hook points and store per-connection data in the TCP 920 control block. Bump __FreeBSD_version to 900029. User space tools that 921 rely on the size of struct tcpcb in tcp_var.h (e.g. sockstat) need to 922 be recompiled. 923 92420101114: 925 Generic IEEE 802.3 annex 31B full duplex flow control support has been 926 added to mii(4) and bge(4), bce(4), msk(4), nfe(4) and stge(4) along 927 with brgphy(4), e1000phy(4) as well as ip1000phy() have been converted 928 to take advantage of it instead of using custom implementations. This 929 means that these drivers now no longer unconditionally advertise 930 support for flow control but only do so if flow control is a selected 931 media option. This was implemented in the generic support that way in 932 order to allow flow control to be switched on and off via ifconfig(8) 933 with the PHY specific default to typically off in order to protect 934 from unwanted effects. Consequently, if you used flow control with 935 one of the above mentioned drivers you now need to explicitly enable 936 it, for example via: 937 ifconfig bge0 media auto mediaopt flowcontrol 938 939 Along with the above mentioned changes generic support for setting 940 1000baseT master mode also has been added and brgphy(4), ciphy(4), 941 e1000phy(4) as well as ip1000phy(4) have been converted to take 942 advantage of it. This means that these drivers now no longer take the 943 link0 parameter for selecting master mode but the master media option 944 has to be used instead, for example like in the following: 945 ifconfig bge0 media 1000baseT mediaopt full-duplex,master 946 947 Selection of master mode now is also available with all other PHY 948 drivers supporting 1000baseT. 949 95020101111: 951 The TCP stack has received a significant update to add support for 952 modularised congestion control and generally improve the clarity of 953 congestion control decisions. Bump __FreeBSD_version to 900025. User 954 space tools that rely on the size of struct tcpcb in tcp_var.h (e.g. 955 sockstat) need to be recompiled. 956 95720101002: 958 The man(1) utility has been replaced by a new version that no longer 959 uses /etc/manpath.config. Please consult man.conf(5) for how to 960 migrate local entries to the new format. 961 96220100928: 963 The copyright strings printed by login(1) and sshd(8) at the time of a 964 new connection have been removed to follow other operating systems and 965 upstream sshd. 966 96720100915: 968 A workaround for a fixed ld bug has been removed in kernel code, 969 so make sure that your system ld is built from sources after 970 revision 210245 from 2010-07-19 (r211583 if building head kernel 971 on stable/8, r211584 for stable/7; both from 2010-08-21). 972 A symptom of incorrect ld version is different addresses for 973 set_pcpu section and __start_set_pcpu symbol in kernel and/or modules. 974 97520100913: 976 The $ipv6_prefer variable in rc.conf(5) has been split into 977 $ip6addrctl_policy and $ipv6_activate_all_interfaces. 978 979 The $ip6addrctl_policy is a variable to choose a pre-defined 980 address selection policy set by ip6addrctl(8). A value 981 "ipv4_prefer", "ipv6_prefer" or "AUTO" can be specified. The 982 default is "AUTO". 983 984 The $ipv6_activate_all_interfaces specifies whether IFDISABLED 985 flag (see an entry of 20090926) is set on an interface with no 986 corresponding $ifconfig_IF_ipv6 line. The default is "NO" for 987 security reason. If you want IPv6 link-local address on all 988 interfaces by default, set this to "YES". 989 990 The old ipv6_prefer="YES" is equivalent to 991 ipv6_activate_all_interfaces="YES" and 992 ip6addrctl_policy="ipv6_prefer". 993 99420100913: 995 DTrace has grown support for userland tracing. Due to this, DTrace is 996 now i386 and amd64 only. 997 dtruss(1) is now installed by default on those systems and a new 998 kernel module is needed for userland tracing: fasttrap. 999 No changes to your kernel config file are necessary to enable 1000 userland tracing, but you might consider adding 'STRIP=' and 1001 'CFLAGS+=-fno-omit-frame-pointer' to your make.conf if you want 1002 to have informative userland stack traces in DTrace (ustack). 1003 100420100725: 1005 The acpi_aiboost(4) driver has been removed in favor of the new 1006 aibs(4) driver. You should update your kernel configuration file. 1007 100820100722: 1009 BSD grep has been imported to the base system and it is built by 1010 default. It is completely BSD licensed, highly GNU-compatible, uses 1011 less memory than its GNU counterpart and has a small codebase. 1012 However, it is slower than its GNU counterpart, which is mostly 1013 noticeable for larger searches, for smaller ones it is measurable 1014 but not significant. The reason is complex, the most important factor 1015 is that we lack a modern and efficient regex library and GNU 1016 overcomes this by optimizing the searches internally. Future work 1017 on improving the regex performance is planned, for the meantime, 1018 users that need better performance, can build GNU grep instead by 1019 setting the WITH_GNU_GREP knob. 1020 102120100713: 1022 Due to the import of powerpc64 support, all existing powerpc kernel 1023 configuration files must be updated with a machine directive like this: 1024 machine powerpc powerpc 1025 1026 In addition, an updated config(8) is required to build powerpc kernels 1027 after this change. 1028 102920100713: 1030 A new version of ZFS (version 15) has been merged to -HEAD. 1031 This version uses a python library for the following subcommands: 1032 zfs allow, zfs unallow, zfs groupspace, zfs userspace. 1033 For full functionality of these commands the following port must 1034 be installed: sysutils/py-zfs 1035 103620100429: 1037 'vm_page's are now hashed by physical address to an array of mutexes. 1038 Currently this is only used to serialize access to hold_count. Over 1039 time the page queue mutex will be peeled away. This changes the size 1040 of pmap on every architecture. And requires all callers of vm_page_hold 1041 and vm_page_unhold to be updated. 1042 104320100402: 1044 WITH_CTF can now be specified in src.conf (not recommended, there 1045 are some problems with static executables), make.conf (would also 1046 affect ports which do not use GNU make and do not override the 1047 compile targets) or in the kernel config (via "makeoptions 1048 WITH_CTF=yes"). 1049 When WITH_CTF was specified there before this was silently ignored, 1050 so make sure that WITH_CTF is not used in places which could lead 1051 to unwanted behavior. 1052 105320100311: 1054 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32 1055 to allow 32-bit compatibility on non-x86 platforms. All kernel 1056 configurations on amd64 and ia64 platforms using these options must 1057 be modified accordingly. 1058 105920100113: 1060 The utmp user accounting database has been replaced with utmpx, 1061 the user accounting interface standardized by POSIX. 1062 Unfortunately the semantics of utmp and utmpx don't match, 1063 making it practically impossible to support both interfaces. 1064 The user accounting database is used by tools like finger(1), 1065 last(1), talk(1), w(1) and ac(8). 1066 1067 All applications in the base system use utmpx. This means only 1068 local binaries (e.g. from the ports tree) may still use these 1069 utmp database files. These applications must be rebuilt to make 1070 use of utmpx. 1071 1072 After the system has been upgraded, it is safe to remove the old 1073 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*), 1074 assuming their contents is of no importance anymore. Old wtmp 1075 databases can only be used by last(1) and ac(8) after they have 1076 been converted to the new format using wtmpcvt(1). 1077 107820100108: 1079 Introduce the kernel thread "deadlock resolver" (which can be enabled 1080 via the DEADLKRES option, see NOTES for more details) and the 1081 sleepq_type() function for sleepqueues. 1082 108320091202: 1084 The rc.firewall and rc.firewall6 were unified, and 1085 rc.firewall6 and rc.d/ip6fw were removed. 1086 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc 1087 variables are obsoleted. Instead, the following new rc 1088 variables are added to rc.d/ipfw: 1089 1090 firewall_client_net_ipv6, firewall_simple_iif_ipv6, 1091 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6, 1092 firewall_simple_onet_ipv6, firewall_trusted_ipv6 1093 1094 The meanings correspond to the relevant IPv4 variables. 1095 109620091125: 1097 8.0-RELEASE. 1098 109920091113: 1100 The default terminal emulation for syscons(4) has been changed 1101 from cons25 to xterm on all platforms except pc98. This means 1102 that the /etc/ttys file needs to be updated to ensure correct 1103 operation of applications on the console. 1104 1105 The terminal emulation style can be toggled per window by using 1106 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration 1107 options can be used to change the compile-time default back to 1108 cons25. 1109 1110 To prevent graphical artifacts, make sure the TERM environment 1111 variable is set to match the terminal emulation that is being 1112 performed by syscons(4). 1113 111420091109: 1115 The layout of the structure ieee80211req_scan_result has changed. 1116 Applications that require wireless scan results (e.g. ifconfig(8)) 1117 from net80211 need to be recompiled. 1118 1119 Applications such as wpa_supplicant(8) may require a full world 1120 build without using NO_CLEAN in order to get synchronized with the 1121 new structure. 1122 112320091025: 1124 The iwn(4) driver has been updated to support the 5000 and 5150 series. 1125 There's one kernel module for each firmware. Adding "device iwnfw" 1126 to the kernel configuration file means including all three firmware 1127 images inside the kernel. If you want to include just the one for 1128 your wireless card, use the devices iwn4965fw, iwn5000fw or 1129 iwn5150fw. 1130 113120090926: 1132 The rc.d/network_ipv6, IPv6 configuration script has been integrated 1133 into rc.d/netif. The changes are the following: 1134 1135 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF 1136 for IPv4. For aliases, $ifconfig_IF_aliasN should be used. 1137 Note that both variables need the "inet6" keyword at the head. 1138 1139 Do not set $ipv6_network_interfaces manually if you do not 1140 understand what you are doing. It is not needed in most cases. 1141 1142 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but 1143 they are obsolete. 1144 1145 2. $ipv6_enable is obsolete. Use $ipv6_prefer and 1146 "inet6 accept_rtadv" keyword in ifconfig(8) instead. 1147 1148 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and 1149 all configured interfaces have "inet6 accept_rtadv" in the 1150 $ifconfig_IF_ipv6. These are for backward compatibility. 1151 1152 3. A new variable $ipv6_prefer has been added. If NO, IPv6 1153 functionality of interfaces with no corresponding 1154 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag, 1155 and the default address selection policy of ip6addrctl(8) 1156 is the IPv4-preferred one (see rc.d/ip6addrctl for more details). 1157 Note that if you want to configure IPv6 functionality on the 1158 disabled interfaces after boot, first you need to clear the flag by 1159 using ifconfig(8) like: 1160 1161 ifconfig em0 inet6 -ifdisabled 1162 1163 If YES, the default address selection policy is set as 1164 IPv6-preferred. 1165 1166 The default value of $ipv6_prefer is NO. 1167 1168 4. If your system need to receive Router Advertisement messages, 1169 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8) 1170 scripts automatically invoke rtsol(8) when the interface becomes 1171 UP. The Router Advertisement messages are used for SLAAC 1172 (State-Less Address AutoConfiguration). 1173 117420090922: 1175 802.11s D3.03 support was committed. This is incompatible with the 1176 previous code, which was based on D3.0. 1177 117820090912: 1179 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value 1180 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to 1181 control whether accepting Router Advertisement messages or not. 1182 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and 1183 a sysctl variable net.inet6.ip6.auto_linklocal is its default value. 1184 The ifconfig(8) utility now supports these flags. 1185 118620090910: 1187 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for 1188 mount(8) and -a option for df(1) to see them. 1189 119020090825: 1191 The old tunable hw.bus.devctl_disable has been superseded by 1192 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be 1193 replaced by hw.bus.devctl_queue=0. The default for this new tunable 1194 is 1000. 1195 119620090813: 1197 Remove the option STOP_NMI. The default action is now to use NMI only 1198 for KDB via the newly introduced function stop_cpus_hard() and 1199 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64. 1200 120120090803: 1202 The stable/8 branch created in subversion. This corresponds to the 1203 RELENG_8 branch in CVS. 1204 120520090719: 1206 Bump the shared library version numbers for all libraries that do not 1207 use symbol versioning as part of the 8.0-RELEASE cycle. Bump 1208 __FreeBSD_version to 800105. 1209 121020090714: 1211 Due to changes in the implementation of virtual network stack support, 1212 all network-related kernel modules must be recompiled. As this change 1213 breaks the ABI, bump __FreeBSD_version to 800104. 1214 121520090713: 1216 The TOE interface to the TCP syncache has been modified to remove 1217 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. 1218 The cxgb driver is the only TOE consumer affected by this change, and 1219 needs to be recompiled along with the kernel. As this change breaks 1220 the ABI, bump __FreeBSD_version to 800103. 1221 122220090712: 1223 Padding has been added to struct tcpcb, sackhint and tcpstat in 1224 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst 1225 maintaining the ABI. However, this change breaks the ABI, so bump 1226 __FreeBSD_version to 800102. User space tools that rely on the size of 1227 any of these structs (e.g. sockstat) need to be recompiled. 1228 122920090630: 1230 The NFS_LEGACYRPC option has been removed along with the old kernel 1231 RPC implementation that this option selected. Kernel configurations 1232 may need to be adjusted. 1233 123420090629: 1235 The network interface device nodes at /dev/net/<interface> have been 1236 removed. All ioctl operations can be performed the normal way using 1237 routing sockets. The kqueue functionality can generally be replaced 1238 with routing sockets. 1239 124020090628: 1241 The documentation from the FreeBSD Documentation Project (Handbook, 1242 FAQ, etc.) is now installed via packages by sysinstall(8) and under 1243 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc. 1244 124520090624: 1246 The ABI of various structures related to the SYSV IPC API have been 1247 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel 1248 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to 1249 800100. 1250 125120090622: 1252 Layout of struct vnet has changed as routing related variables were 1253 moved to their own Vimage module. Modules need to be recompiled. Bump 1254 __FreeBSD_version to 800099. 1255 125620090619: 1257 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024 1258 respectively. As long as no more than 16 groups per process are used, 1259 no changes should be visible. When more than 16 groups are used, old 1260 binaries may fail if they call getgroups() or getgrouplist() with 1261 statically sized storage. Recompiling will work around this, but 1262 applications should be modified to use dynamically allocated storage 1263 for group arrays as POSIX.1-2008 does not cap an implementation's 1264 number of supported groups at NGROUPS_MAX+1 as previous versions did. 1265 1266 NFS and portalfs mounts may also be affected as the list of groups is 1267 truncated to 16. Users of NFS who use more than 16 groups, should 1268 take care that negative group permissions are not used on the exported 1269 file systems as they will not be reliable unless a GSSAPI based 1270 authentication method is used. 1271 127220090616: 1273 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This 1274 option compiles in the support for adaptive spinning for lockmgrs 1275 which want to enable it. The lockinit() function now accepts the flag 1276 LK_ADAPTIVE in order to make the lock object subject to adaptive 1277 spinning when both held in write and read mode. 1278 127920090613: 1280 The layout of the structure returned by IEEE80211_IOC_STA_INFO has 1281 changed. User applications that use this ioctl need to be rebuilt. 1282 128320090611: 1284 The layout of struct thread has changed. Kernel and modules need to 1285 be rebuilt. 1286 128720090608: 1288 The layout of structs ifnet, domain, protosw and vnet_net has changed. 1289 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097. 1290 129120090602: 1292 window(1) has been removed from the base system. It can now be 1293 installed from ports. The port is called misc/window. 1294 129520090601: 1296 The way we are storing and accessing `routing table' entries has 1297 changed. Programs reading the FIB, like netstat, need to be 1298 re-compiled. 1299 130020090601: 1301 A new netisr implementation has been added for FreeBSD 8. Network 1302 file system modules, such as igmp, ipdivert, and others, should be 1303 rebuilt. 1304 Bump __FreeBSD_version to 800096. 1305 130620090530: 1307 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no 1308 more valid. 1309 131020090530: 1311 Add VOP_ACCESSX(9). File system modules need to be rebuilt. 1312 Bump __FreeBSD_version to 800094. 1313 131420090529: 1315 Add mnt_xflag field to 'struct mount'. File system modules need to be 1316 rebuilt. 1317 Bump __FreeBSD_version to 800093. 1318 131920090528: 1320 The compiling option ADAPTIVE_SX has been retired while it has been 1321 introduced the option NO_ADAPTIVE_SX which handles the reversed logic. 1322 The KPI for sx_init_flags() changes as accepting flags: 1323 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has 1324 been introduced in order to handle the reversed logic. 1325 Bump __FreeBSD_version to 800092. 1326 132720090527: 1328 Add support for hierarchical jails. Remove global securelevel. 1329 Bump __FreeBSD_version to 800091. 1330 133120090523: 1332 The layout of struct vnet_net has changed, therefore modules 1333 need to be rebuilt. 1334 Bump __FreeBSD_version to 800090. 1335 133620090523: 1337 The newly imported zic(8) produces a new format in the output. Please 1338 run tzsetup(8) to install the newly created data to /etc/localtime. 1339 134020090520: 1341 The sysctl tree for the usb stack has renamed from hw.usb2.* to 1342 hw.usb.* and is now consistent again with previous releases. 1343 134420090520: 1345 802.11 monitor mode support was revised and driver api's were changed. 1346 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead 1347 of DLT_IEEE802_11. No user-visible data structures were changed but 1348 applications that use DLT_IEEE802_11 may require changes. 1349 Bump __FreeBSD_version to 800088. 1350 135120090430: 1352 The layout of the following structs has changed: sysctl_oid, 1353 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet, 1354 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or 1355 panics may be experienced. World rebuild is required for 1356 correctly checking networking state from userland. 1357 Bump __FreeBSD_version to 800085. 1358 135920090429: 1360 MLDv2 and Source-Specific Multicast (SSM) have been merged 1361 to the IPv6 stack. VIMAGE hooks are in but not yet used. 1362 The implementation of SSM within FreeBSD's IPv6 stack closely 1363 follows the IPv4 implementation. 1364 1365 For kernel developers: 1366 1367 * The most important changes are that the ip6_output() and 1368 ip6_input() paths no longer take the IN6_MULTI_LOCK, 1369 and this lock has been downgraded to a non-recursive mutex. 1370 1371 * As with the changes to the IPv4 stack to support SSM, filtering 1372 of inbound multicast traffic must now be performed by transport 1373 protocols within the IPv6 stack. This does not apply to TCP and 1374 SCTP, however, it does apply to UDP in IPv6 and raw IPv6. 1375 1376 * The KPIs used by IPv6 multicast are similar to those used by 1377 the IPv4 stack, with the following differences: 1378 * im6o_mc_filter() is analogous to imo_multicast_filter(). 1379 * The legacy KAME entry points in6_joingroup and in6_leavegroup() 1380 are shimmed to in6_mc_join() and in6_mc_leave() respectively. 1381 * IN6_LOOKUP_MULTI() has been deprecated and removed. 1382 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs 1383 for MLDv1 have an additional 'timer' argument which is used to 1384 jitter the initial membership report for the solicited-node 1385 multicast membership on-link. 1386 * This is not strictly needed for MLDv2, which already jitters 1387 its report transmissions. However, the 'timer' argument is 1388 preserved in case MLDv1 is active on the interface. 1389 1390 * The KAME linked-list based IPv6 membership implementation has 1391 been refactored to use a vector similar to that used by the IPv4 1392 stack. 1393 Code which maintains a list of its own multicast memberships 1394 internally, e.g. carp, has been updated to reflect the new 1395 semantics. 1396 1397 * There is a known Lock Order Reversal (LOR) due to in6_setscope() 1398 acquiring the IF_AFDATA_LOCK and being called within ip6_output(). 1399 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an 1400 implementation constraint which needs to be addressed in HEAD. 1401 1402 For application developers: 1403 1404 * The changes are broadly similar to those made for the IPv4 1405 stack. 1406 1407 * The use of IPv4 and IPv6 multicast socket options on the same 1408 socket, using mapped addresses, HAS NOT been tested or supported. 1409 1410 * There are a number of issues with the implementation of various 1411 IPv6 multicast APIs which need to be resolved in the API surface 1412 before the implementation is fully compatible with KAME userland 1413 use, and these are mostly to do with interface index treatment. 1414 1415 * The literature available discusses the use of either the delta / ASM 1416 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API 1417 using setsourcefilter(3)/getsourcefilter(3). For more information 1418 please refer to RFC 3768, 'Socket Interface Extensions for 1419 Multicast Source Filters'. 1420 1421 * Applications which use the published RFC 3678 APIs should be fine. 1422 1423 For systems administrators: 1424 1425 * The mtest(8) utility has been refactored to support IPv6, in 1426 addition to IPv4. Interface addresses are no longer accepted 1427 as arguments, their names must be used instead. The utility 1428 will map the interface name to its first IPv4 address as 1429 returned by getifaddrs(3). 1430 1431 * The ifmcstat(8) utility has also been updated to print the MLDv2 1432 endpoint state and source filter lists via sysctl(3). 1433 1434 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable 1435 loopback of IPv6 multicast datagrams by default; it defaults to 1 1436 to preserve the existing behaviour. Disabling multicast loopback is 1437 recommended for optimal system performance. 1438 1439 * The IPv6 MROUTING code has been changed to examine this sysctl 1440 instead of attempting to perform a group lookup before looping 1441 back forwarded datagrams. 1442 1443 Bump __FreeBSD_version to 800084. 1444 144520090422: 1446 Implement low-level Bluetooth HCI API. 1447 Bump __FreeBSD_version to 800083. 1448 144920090419: 1450 The layout of struct malloc_type, used by modules to register new 1451 memory allocation types, has changed. Most modules will need to 1452 be rebuilt or panics may be experienced. 1453 Bump __FreeBSD_version to 800081. 1454 145520090415: 1456 Anticipate overflowing inp_flags - add inp_flags2. 1457 This changes most offsets in inpcb, so checking v4 connection 1458 state will require a world rebuild. 1459 Bump __FreeBSD_version to 800080. 1460 146120090415: 1462 Add an llentry to struct route and struct route_in6. Modules 1463 embedding a struct route will need to be recompiled. 1464 Bump __FreeBSD_version to 800079. 1465 146620090414: 1467 The size of rt_metrics_lite and by extension rtentry has changed. 1468 Networking administration apps will need to be recompiled. 1469 The route command now supports show as an alias for get, weighting 1470 of routes, sticky and nostick flags to alter the behavior of stateful 1471 load balancing. 1472 Bump __FreeBSD_version to 800078. 1473 147420090408: 1475 Do not use Giant for kbdmux(4) locking. This is wrong and 1476 apparently causing more problems than it solves. This will 1477 re-open the issue where interrupt handlers may race with 1478 kbdmux(4) in polling mode. Typical symptoms include (but 1479 not limited to) duplicated and/or missing characters when 1480 low level console functions (such as gets) are used while 1481 interrupts are enabled (for example geli password prompt, 1482 mountroot prompt etc.). Disabling kbdmux(4) may help. 1483 148420090407: 1485 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed; 1486 kernel modules referencing any of the above need to be recompiled. 1487 Bump __FreeBSD_version to 800075. 1488 148920090320: 1490 GEOM_PART has become the default partition slicer for storage devices, 1491 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It 1492 introduces some changes: 1493 1494 MSDOS/EBR: the devices created from MSDOS extended partition entries 1495 (EBR) can be named differently than with GEOM_MBR and are now symlinks 1496 to devices with offset-based names. fstabs may need to be modified. 1497 1498 BSD: the "geometry does not match label" warning is harmless in most 1499 cases but it points to problems in file system misalignment with 1500 disk geometry. The "c" partition is now implicit, covers the whole 1501 top-level drive and cannot be (mis)used by users. 1502 1503 General: Kernel dumps are now not allowed to be written to devices 1504 whose partition types indicate they are meant to be used for file 1505 systems (or, in case of MSDOS partitions, as something else than 1506 the "386BSD" type). 1507 1508 Most of these changes date approximately from 200812. 1509 151020090319: 1511 The uscanner(4) driver has been removed from the kernel. This follows 1512 Linux removing theirs in 2.6 and making libusb the default interface 1513 (supported by sane). 1514 151520090319: 1516 The multicast forwarding code has been cleaned up. netstat(1) 1517 only relies on KVM now for printing bandwidth upcall meters. 1518 The IPv4 and IPv6 modules are split into ip_mroute_mod and 1519 ip6_mroute_mod respectively. The config(5) options for statically 1520 compiling this code remain the same, i.e. 'options MROUTING'. 1521 152220090315: 1523 Support for the IFF_NEEDSGIANT network interface flag has been 1524 removed, which means that non-MPSAFE network device drivers are no 1525 longer supported. In particular, if_ar, if_sr, and network device 1526 drivers from the old (legacy) USB stack can no longer be built or 1527 used. 1528 152920090313: 1530 POSIX.1 Native Language Support (NLS) has been enabled in libc and 1531 a bunch of new language catalog files have also been added. 1532 This means that some common libc messages are now localized and 1533 they depend on the LC_MESSAGES environmental variable. 1534 153520090313: 1536 The k8temp(4) driver has been renamed to amdtemp(4) since 1537 support for Family 10 and Family 11 CPU families was added. 1538 153920090309: 1540 IGMPv3 and Source-Specific Multicast (SSM) have been merged 1541 to the IPv4 stack. VIMAGE hooks are in but not yet used. 1542 1543 For kernel developers, the most important changes are that the 1544 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(), 1545 and this lock has been downgraded to a non-recursive mutex. 1546 1547 Transport protocols (UDP, Raw IP) are now responsible for filtering 1548 inbound multicast traffic according to group membership and source 1549 filters. The imo_multicast_filter() KPI exists for this purpose. 1550 Transports which do not use multicast (SCTP, TCP) already reject 1551 multicast by default. Forwarding and receive performance may improve 1552 as a mutex acquisition is no longer needed in the ip_input() 1553 low-level input path. in_addmulti() and in_delmulti() are shimmed 1554 to new KPIs which exist to support SSM in-kernel. 1555 1556 For application developers, it is recommended that loopback of 1557 multicast datagrams be disabled for best performance, as this 1558 will still cause the lock to be taken for each looped-back 1559 datagram transmission. The net.inet.ip.mcast.loop sysctl may 1560 be tuned to 0 to disable loopback by default; it defaults to 1 1561 to preserve the existing behaviour. 1562 1563 For systems administrators, to obtain best performance with 1564 multicast reception and multiple groups, it is always recommended 1565 that a card with a suitably precise hash filter is used. Hash 1566 collisions will still result in the lock being taken within the 1567 transport protocol input path to check group membership. 1568 1569 If deploying FreeBSD in an environment with IGMP snooping switches, 1570 it is recommended that the net.inet.igmp.sendlocal sysctl remain 1571 enabled; this forces 224.0.0.0/24 group membership to be announced 1572 via IGMP. 1573 1574 The size of 'struct igmpstat' has changed; netstat needs to be 1575 recompiled to reflect this. 1576 Bump __FreeBSD_version to 800070. 1577 157820090309: 1579 libusb20.so.1 is now installed as libusb.so.1 and the ports system 1580 updated to use it. This requires a buildworld/installworld in order to 1581 update the library and dependencies (usbconfig, etc). Its advisable to 1582 rebuild all ports which uses libusb. More specific directions are given 1583 in the ports collection UPDATING file. Any /etc/libmap.conf entries for 1584 libusb are no longer required and can be removed. 1585 158620090302: 1587 A workaround is committed to allow the creation of System V shared 1588 memory segment of size > 2 GB on the 64-bit architectures. 1589 Due to a limitation of the existing ABI, the shm_segsz member 1590 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is 1591 wrong for large segments. Note that limits must be explicitly 1592 raised to allow such segments to be created. 1593 159420090301: 1595 The layout of struct ifnet has changed, requiring a rebuild of all 1596 network device driver modules. 1597 159820090227: 1599 The /dev handling for the new USB stack has changed, a 1600 buildworld/installworld is required for libusb20. 1601 160220090223: 1603 The new USB2 stack has now been permanently moved in and all kernel and 1604 module names reverted to their previous values (eg, usb, ehci, ohci, 1605 ums, ...). The old usb stack can be compiled in by prefixing the name 1606 with the letter 'o', the old usb modules have been removed. 1607 Updating entry 20090216 for xorg and 20090215 for libmap may still 1608 apply. 1609 161020090217: 1611 The rc.conf(5) option if_up_delay has been renamed to 1612 defaultroute_delay to better reflect its purpose. If you have 1613 customized this setting in /etc/rc.conf you need to update it to 1614 use the new name. 1615 161620090216: 1617 xorg 7.4 wants to configure its input devices via hald which does not 1618 yet work with USB2. If the keyboard/mouse does not work in xorg then 1619 add 1620 Option "AllowEmptyInput" "off" 1621 to your ServerLayout section. This will cause X to use the configured 1622 kbd and mouse sections from your xorg.conf. 1623 162420090215: 1625 The GENERIC kernels for all architectures now default to the new USB2 1626 stack. No kernel config options or code have been removed so if a 1627 problem arises please report it and optionally revert to the old USB 1628 stack. If you are loading USB kernel modules or have a custom kernel 1629 that includes GENERIC then ensure that usb names are also changed over, 1630 eg uftdi -> usb2_serial_ftdi. 1631 1632 Older programs linked against the ports libusb 0.1 need to be 1633 redirected to the new stack's libusb20. /etc/libmap.conf can 1634 be used for this: 1635 # Map old usb library to new one for usb2 stack 1636 libusb-0.1.so.8 libusb20.so.1 1637 163820090209: 1639 All USB ethernet devices now attach as interfaces under the name ueN 1640 (eg. ue0). This is to provide a predictable name as vendors often 1641 change usb chipsets in a product without notice. 1642 164320090203: 1644 The ichsmb(4) driver has been changed to require SMBus slave 1645 addresses be left-justified (xxxxxxx0b) rather than right-justified. 1646 All of the other SMBus controller drivers require left-justified 1647 slave addresses, so this change makes all the drivers provide the 1648 same interface. 1649 165020090201: 1651 INET6 statistics (struct ip6stat) was updated. 1652 netstat(1) needs to be recompiled. 1653 165420090119: 1655 NTFS has been removed from GENERIC kernel on amd64 to match 1656 GENERIC on i386. Should not cause any issues since mount_ntfs(8) 1657 will load ntfs.ko module automatically when NTFS support is 1658 actually needed, unless ntfs.ko is not installed or security 1659 level prohibits loading kernel modules. If either is the case, 1660 "options NTFS" has to be added into kernel config. 1661 166220090115: 1663 TCP Appropriate Byte Counting (RFC 3465) support added to kernel. 1664 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to 1665 800061. User space tools that rely on the size of struct tcpcb in 1666 tcp_var.h (e.g. sockstat) need to be recompiled. 1667 166820081225: 1669 ng_tty(4) module updated to match the new TTY subsystem. 1670 Due to API change, user-level applications must be updated. 1671 New API support added to mpd5 CVS and expected to be present 1672 in next mpd5.3 release. 1673 167420081219: 1675 With __FreeBSD_version 800060 the makefs tool is part of 1676 the base system (it was a port). 1677 167820081216: 1679 The afdata and ifnet locks have been changed from mutexes to 1680 rwlocks, network modules will need to be re-compiled. 1681 168220081214: 1683 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite. 1684 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated. 1685 The new code reduced struct rtentry{} by 16 bytes on 32-bit 1686 architecture and 40 bytes on 64-bit architecture. The userland 1687 applications "arp" and "ndp" have been updated accordingly. 1688 The output from "netstat -r" shows only routing entries and 1689 none of the L2 information. 1690 169120081130: 1692 __FreeBSD_version 800057 marks the switchover from the 1693 binary ath hal to source code. Users must add the line: 1694 1695 options AH_SUPPORT_AR5416 1696 1697 to their kernel config files when specifying: 1698 1699 device ath_hal 1700 1701 The ath_hal module no longer exists; the code is now compiled 1702 together with the driver in the ath module. It is now 1703 possible to tailor chip support (i.e. reduce the set of chips 1704 and thereby the code size); consult ath_hal(4) for details. 1705 170620081121: 1707 __FreeBSD_version 800054 adds memory barriers to 1708 <machine/atomic.h>, new interfaces to ifnet to facilitate 1709 multiple hardware transmit queues for cards that support 1710 them, and a lock-less ring-buffer implementation to 1711 enable drivers to more efficiently manage queueing of 1712 packets. 1713 171420081117: 1715 A new version of ZFS (version 13) has been merged to -HEAD. 1716 This version has zpool attribute "listsnapshots" off by 1717 default, which means "zfs list" does not show snapshots, 1718 and is the same as Solaris behavior. 1719 172020081028: 1721 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled. 1722 172320081009: 1724 The uhci, ohci, ehci and slhci USB Host controller drivers have 1725 been put into separate modules. If you load the usb module 1726 separately through loader.conf you will need to load the 1727 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0 1728 controller add the following to loader.conf: 1729 1730 uhci_load="YES" 1731 ehci_load="YES" 1732 173320081009: 1734 The ABI used by the PMC toolset has changed. Please keep 1735 userland (libpmc(3)) and the kernel module (hwpmc(4)) in 1736 sync. 1737 173820081009: 1739 atapci kernel module now includes only generic PCI ATA 1740 driver. AHCI driver moved to ataahci kernel module. 1741 All vendor-specific code moved into separate kernel modules: 1742 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek, 1743 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron, 1744 atamarvell, atamicron, atanational, atanetcell, atanvidia, 1745 atapromise, ataserverworks, atasiliconimage, atasis, atavia 1746 174720080820: 1748 The TTY subsystem of the kernel has been replaced by a new 1749 implementation, which provides better scalability and an 1750 improved driver model. Most common drivers have been migrated to 1751 the new TTY subsystem, while others have not. The following 1752 drivers have not yet been ported to the new TTY layer: 1753 1754 PCI/ISA: 1755 cy, digi, rc, rp, sio 1756 1757 USB: 1758 ubser, ucycom 1759 1760 Line disciplines: 1761 ng_h4, ng_tty, ppp, sl, snp 1762 1763 Adding these drivers to your kernel configuration file shall 1764 cause compilation to fail. 1765 176620080818: 1767 ntpd has been upgraded to 4.2.4p5. 1768 176920080801: 1770 OpenSSH has been upgraded to 5.1p1. 1771 1772 For many years, FreeBSD's version of OpenSSH preferred DSA 1773 over RSA for host and user authentication keys. With this 1774 upgrade, we've switched to the vendor's default of RSA over 1775 DSA. This may cause upgraded clients to warn about unknown 1776 host keys even for previously known hosts. Users should 1777 follow the usual procedure for verifying host keys before 1778 accepting the RSA key. 1779 1780 This can be circumvented by setting the "HostKeyAlgorithms" 1781 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh 1782 command line. 1783 1784 Please note that the sequence of keys offered for 1785 authentication has been changed as well. You may want to 1786 specify IdentityFile in a different order to revert this 1787 behavior. 1788 178920080713: 1790 The sio(4) driver has been removed from the i386 and amd64 1791 kernel configuration files. This means uart(4) is now the 1792 default serial port driver on those platforms as well. 1793 1794 To prevent collisions with the sio(4) driver, the uart(4) driver 1795 uses different names for its device nodes. This means the 1796 onboard serial port will now most likely be called "ttyu0" 1797 instead of "ttyd0". You may need to reconfigure applications to 1798 use the new device names. 1799 1800 When using the serial port as a boot console, be sure to update 1801 /boot/device.hints and /etc/ttys before booting the new kernel. 1802 If you forget to do so, you can still manually specify the hints 1803 at the loader prompt: 1804 1805 set hint.uart.0.at="isa" 1806 set hint.uart.0.port="0x3F8" 1807 set hint.uart.0.flags="0x10" 1808 set hint.uart.0.irq="4" 1809 boot -s 1810 181120080609: 1812 The gpt(8) utility has been removed. Use gpart(8) to partition 1813 disks instead. 1814 181520080603: 1816 The version that Linuxulator emulates was changed from 2.4.2 1817 to 2.6.16. If you experience any problems with Linux binaries 1818 please try to set sysctl compat.linux.osrelease to 2.4.2 and 1819 if it fixes the problem contact emulation mailing list. 1820 182120080525: 1822 ISDN4BSD (I4B) was removed from the src tree. You may need to 1823 update a your kernel configuration and remove relevant entries. 1824 182520080509: 1826 I have checked in code to support multiple routing tables. 1827 See the man pages setfib(1) and setfib(2). 1828 This is a hopefully backwards compatible version, 1829 but to make use of it you need to compile your kernel 1830 with options ROUTETABLES=2 (or more up to 16). 1831 183220080420: 1833 The 802.11 wireless support was redone to enable multi-bss 1834 operation on devices that are capable. The underlying device 1835 is no longer used directly but instead wlanX devices are 1836 cloned with ifconfig. This requires changes to rc.conf files. 1837 For example, change: 1838 ifconfig_ath0="WPA DHCP" 1839 to 1840 wlans_ath0=wlan0 1841 ifconfig_wlan0="WPA DHCP" 1842 see rc.conf(5) for more details. In addition, mergemaster of 1843 /etc/rc.d is highly recommended. Simultaneous update of userland 1844 and kernel wouldn't hurt either. 1845 1846 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta 1847 modules were merged into the base wlan module. All references 1848 to these modules (e.g. in kernel config files) must be removed. 1849 185020080408: 1851 psm(4) has gained write(2) support in native operation level. 1852 Arbitrary commands can be written to /dev/psm%d and status can 1853 be read back from it. Therefore, an application is responsible 1854 for status validation and error recovery. It is a no-op in 1855 other operation levels. 1856 185720080312: 1858 Support for KSE threading has been removed from the kernel. To 1859 run legacy applications linked against KSE libmap.conf may 1860 be used. The following libmap.conf may be used to ensure 1861 compatibility with any prior release: 1862 1863 libpthread.so.1 libthr.so.1 1864 libpthread.so.2 libthr.so.2 1865 libkse.so.3 libthr.so.3 1866 186720080301: 1868 The layout of struct vmspace has changed. This affects libkvm 1869 and any executables that link against libkvm and use the 1870 kvm_getprocs() function. In particular, but not exclusively, 1871 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1). 1872 The effects are minimal, but it's advisable to upgrade world 1873 nonetheless. 1874 187520080229: 1876 The latest em driver no longer has support in it for the 1877 82575 adapter, this is now moved to the igb driver. The 1878 split was done to make new features that are incompatible 1879 with older hardware easier to do. 1880 188120080220: 1882 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4), 1883 likewise the kernel option is now GEOM_LINUX_LVM. 1884 188520080211: 1886 The default NFS mount mode has changed from UDP to TCP for 1887 increased reliability. If you rely on (insecurely) NFS 1888 mounting across a firewall you may need to update your 1889 firewall rules. 1890 189120080208: 1892 Belatedly note the addition of m_collapse for compacting 1893 mbuf chains. 1894 189520080126: 1896 The fts(3) structures have been changed to use adequate 1897 integer types for their members and so to be able to cope 1898 with huge file trees. The old fts(3) ABI is preserved 1899 through symbol versioning in libc, so third-party binaries 1900 using fts(3) should still work, although they will not take 1901 advantage of the extended types. At the same time, some 1902 third-party software might fail to build after this change 1903 due to unportable assumptions made in its source code about 1904 fts(3) structure members. Such software should be fixed 1905 by its vendor or, in the worst case, in the ports tree. 1906 FreeBSD_version 800015 marks this change for the unlikely 1907 case that a portable fix is impossible. 1908 190920080123: 1910 To upgrade to -current after this date, you must be running 1911 FreeBSD not older than 6.0-RELEASE. Upgrading to -current 1912 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems. 1913 191420071128: 1915 The ADAPTIVE_GIANT kernel option has been retired because its 1916 functionality is the default now. 1917 191820071118: 1919 The AT keyboard emulation of sunkbd(4) has been turned on 1920 by default. In order to make the special symbols of the Sun 1921 keyboards driven by sunkbd(4) work under X these now have 1922 to be configured the same way as Sun USB keyboards driven 1923 by ukbd(4) (which also does AT keyboard emulation), f.e.: 1924 1925 Option "XkbLayout" "us" 1926 Option "XkbRules" "xorg" 1927 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us" 1928 192920071024: 1930 It has been decided that it is desirable to provide ABI 1931 backwards compatibility to the FreeBSD 4/5/6 versions of the 1932 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was 1933 broken with the introduction of PCI domain support (see the 1934 20070930 entry). Unfortunately, this required the ABI of 1935 PCIOCGETCONF to be broken again in order to be able to 1936 provide backwards compatibility to the old version of that 1937 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled 1938 again. As for prominent ports this affects neither pciutils 1939 nor xorg-server this time, the hal port needs to be rebuilt 1940 however. 1941 194220071020: 1943 The misnamed kthread_create() and friends have been renamed 1944 to kproc_create() etc. Many of the callers already 1945 used kproc_start().. 1946 I will return kthread_create() and friends in a while 1947 with implementations that actually create threads, not procs. 1948 Renaming corresponds with version 800002. 1949 195020071010: 1951 RELENG_7 branched. 1952 1953COMMON ITEMS: 1954 1955 General Notes 1956 ------------- 1957 Avoid using make -j when upgrading. While generally safe, there are 1958 sometimes problems using -j to upgrade. If your upgrade fails with 1959 -j, please try again without -j. From time to time in the past there 1960 have been problems using -j with buildworld and/or installworld. This 1961 is especially true when upgrading between "distant" versions (eg one 1962 that cross a major release boundary or several minor releases, or when 1963 several months have passed on the -current branch). 1964 1965 Sometimes, obscure build problems are the result of environment 1966 poisoning. This can happen because the make utility reads its 1967 environment when searching for values for global variables. To run 1968 your build attempts in an "environmental clean room", prefix all make 1969 commands with 'env -i '. See the env(1) manual page for more details. 1970 1971 When upgrading from one major version to another it is generally best 1972 to upgrade to the latest code in the currently installed branch first, 1973 then do an upgrade to the new branch. This is the best-tested upgrade 1974 path, and has the highest probability of being successful. Please try 1975 this approach before reporting problems with a major version upgrade. 1976 1977 When upgrading a live system, having a root shell around before 1978 installing anything can help undo problems. Not having a root shell 1979 around can lead to problems if pam has changed too much from your 1980 starting point to allow continued authentication after the upgrade. 1981 1982 ZFS notes 1983 --------- 1984 When upgrading the boot ZFS pool to a new version, always follow 1985 these two steps: 1986 1987 1.) recompile and reinstall the ZFS boot loader and boot block 1988 (this is part of "make buildworld" and "make installworld") 1989 1990 2.) update the ZFS boot block on your boot drive 1991 1992 The following example updates the ZFS boot block on the first 1993 partition (freebsd-boot) of a GPT partitioned drive ad0: 1994 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0" 1995 1996 Non-boot pools do not need these updates. 1997 1998 To build a kernel 1999 ----------------- 2000 If you are updating from a prior version of FreeBSD (even one just 2001 a few days old), you should follow this procedure. It is the most 2002 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld, 2003 2004 make kernel-toolchain 2005 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE 2006 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE 2007 2008 To test a kernel once 2009 --------------------- 2010 If you just want to boot a kernel once (because you are not sure 2011 if it works, or if you want to boot a known bad kernel to provide 2012 debugging information) run 2013 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel 2014 nextboot -k testkernel 2015 2016 To just build a kernel when you know that it won't mess you up 2017 -------------------------------------------------------------- 2018 This assumes you are already running a CURRENT system. Replace 2019 ${arch} with the architecture of your machine (e.g. "i386", 2020 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc). 2021 2022 cd src/sys/${arch}/conf 2023 config KERNEL_NAME_HERE 2024 cd ../compile/KERNEL_NAME_HERE 2025 make depend 2026 make 2027 make install 2028 2029 If this fails, go to the "To build a kernel" section. 2030 2031 To rebuild everything and install it on the current system. 2032 ----------------------------------------------------------- 2033 # Note: sometimes if you are running current you gotta do more than 2034 # is listed here if you are upgrading from a really old current. 2035 2036 <make sure you have good level 0 dumps> 2037 make buildworld 2038 make kernel KERNCONF=YOUR_KERNEL_HERE 2039 [1] 2040 <reboot in single user> [3] 2041 mergemaster -p [5] 2042 make installworld 2043 mergemaster -i [4] 2044 make delete-old [6] 2045 <reboot> 2046 2047 To cross-install current onto a separate partition 2048 -------------------------------------------------- 2049 # In this approach we use a separate partition to hold 2050 # current's root, 'usr', and 'var' directories. A partition 2051 # holding "/", "/usr" and "/var" should be about 2GB in 2052 # size. 2053 2054 <make sure you have good level 0 dumps> 2055 <boot into -stable> 2056 make buildworld 2057 make buildkernel KERNCONF=YOUR_KERNEL_HERE 2058 <maybe newfs current's root partition> 2059 <mount current's root partition on directory ${CURRENT_ROOT}> 2060 make installworld DESTDIR=${CURRENT_ROOT} 2061 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd 2062 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT} 2063 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd 2064 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition> 2065 <reboot into current> 2066 <do a "native" rebuild/install as described in the previous section> 2067 <maybe install compatibility libraries from ports/misc/compat*> 2068 <reboot> 2069 2070 2071 To upgrade in-place from stable to current 2072 ---------------------------------------------- 2073 <make sure you have good level 0 dumps> 2074 make buildworld [9] 2075 make kernel KERNCONF=YOUR_KERNEL_HERE [8] 2076 [1] 2077 <reboot in single user> [3] 2078 mergemaster -p [5] 2079 make installworld 2080 mergemaster -i [4] 2081 make delete-old [6] 2082 <reboot> 2083 2084 Make sure that you've read the UPDATING file to understand the 2085 tweaks to various things you need. At this point in the life 2086 cycle of current, things change often and you are on your own 2087 to cope. The defaults can also change, so please read ALL of 2088 the UPDATING entries. 2089 2090 Also, if you are tracking -current, you must be subscribed to 2091 freebsd-current@freebsd.org. Make sure that before you update 2092 your sources that you have read and understood all the recent 2093 messages there. If in doubt, please track -stable which has 2094 much fewer pitfalls. 2095 2096 [1] If you have third party modules, such as vmware, you 2097 should disable them at this point so they don't crash your 2098 system on reboot. 2099 2100 [3] From the bootblocks, boot -s, and then do 2101 fsck -p 2102 mount -u / 2103 mount -a 2104 cd src 2105 adjkerntz -i # if CMOS is wall time 2106 Also, when doing a major release upgrade, it is required that 2107 you boot into single user mode to do the installworld. 2108 2109 [4] Note: This step is non-optional. Failure to do this step 2110 can result in a significant reduction in the functionality of the 2111 system. Attempting to do it by hand is not recommended and those 2112 that pursue this avenue should read this file carefully, as well 2113 as the archives of freebsd-current and freebsd-hackers mailing lists 2114 for potential gotchas. The -U option is also useful to consider. 2115 See mergemaster(8) for more information. 2116 2117 [5] Usually this step is a noop. However, from time to time 2118 you may need to do this if you get unknown user in the following 2119 step. It never hurts to do it all the time. You may need to 2120 install a new mergemaster (cd src/usr.sbin/mergemaster && make 2121 install) after the buildworld before this step if you last updated 2122 from current before 20130425 or from -stable before 20130430. 2123 2124 [6] This only deletes old files and directories. Old libraries 2125 can be deleted by "make delete-old-libs", but you have to make 2126 sure that no program is using those libraries anymore. 2127 2128 [8] In order to have a kernel that can run the 4.x binaries needed to 2129 do an installworld, you must include the COMPAT_FREEBSD4 option in 2130 your kernel. Failure to do so may leave you with a system that is 2131 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is 2132 required to run the 5.x binaries on more recent kernels. And so on 2133 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7. 2134 2135 Make sure that you merge any new devices from GENERIC since the 2136 last time you updated your kernel config file. 2137 2138 [9] When checking out sources, you must include the -P flag to have 2139 cvs prune empty directories. 2140 2141 If CPUTYPE is defined in your /etc/make.conf, make sure to use the 2142 "?=" instead of the "=" assignment operator, so that buildworld can 2143 override the CPUTYPE if it needs to. 2144 2145 MAKEOBJDIRPREFIX must be defined in an environment variable, and 2146 not on the command line, or in /etc/make.conf. buildworld will 2147 warn if it is improperly defined. 2148FORMAT: 2149 2150This file contains a list, in reverse chronological order, of major 2151breakages in tracking -current. It is not guaranteed to be a complete 2152list of such breakages, and only contains entries since October 10, 2007. 2153If you need to see UPDATING entries from before that date, you will need 2154to fetch an UPDATING file from an older FreeBSD release. 2155 2156Copyright information: 2157 2158Copyright 1998-2009 M. Warner Losh. All Rights Reserved. 2159 2160Redistribution, publication, translation and use, with or without 2161modification, in full or in part, in any form or format of this 2162document are permitted without further permission from the author. 2163 2164THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR 2165IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 2166WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 2167DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT, 2168INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 2169(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 2170SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2171HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 2172STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 2173IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 2174POSSIBILITY OF SUCH DAMAGE. 2175 2176Contact Warner Losh if you have any questions about your use of 2177this document. 2178 2179$FreeBSD: stable/10/UPDATING 283875 2015-06-01 09:04:57Z smh $ 2180