UPDATING revision 255624
1Updating Information for FreeBSD current users 2 3This file is maintained and copyrighted by M. Warner Losh <imp@freebsd.org>. 4See end of file for further details. For commonly done items, please see the 5COMMON ITEMS: section later in the file. These instructions assume that you 6basically know what you are doing. If not, then please consult the FreeBSD 7handbook: 8 9 http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html 10 11Items affecting the ports and packages system can be found in 12/usr/ports/UPDATING. Please read that file before running portupgrade. 13 14NOTE: FreeBSD has switched from gcc to clang. If you have trouble bootstrapping 15from older versions of FreeBSD, try WITHOUT_CLANG to bootstrap to the tip of 16head, and then rebuild without this option. The bootstrap process from 17older version of current is a bit fragile. 18 19NOTE TO PEOPLE WHO THINK THAT FreeBSD 10.x IS SLOW: 20 FreeBSD 10.x has many debugging features turned on, in both the kernel 21 and userland. These features attempt to detect incorrect use of 22 system primitives, and encourage loud failure through extra sanity 23 checking and fail stop semantics. They also substantially impact 24 system performance. If you want to do performance measurement, 25 benchmarking, and optimization, you'll want to turn them off. This 26 includes various WITNESS- related kernel options, INVARIANTS, malloc 27 debugging flags in userland, and various verbose features in the 28 kernel. Many developers choose to disable these features on build 29 machines to maximize performance. (To completely disable malloc 30 debugging, define MALLOC_PRODUCTION in /etc/make.conf, or to merely 31 disable the most expensive debugging functionality run 32 "ln -s 'abort:false,junk:false' /etc/malloc.conf".) 33 3420130916: 35 With the addition of unbound(8), a new unbound user is now 36 required during installworld. "mergemaster -p" can be used to 37 add the user prior to installworld, as documented in the handbook. 38 3920130911: 40 OpenSSH is now built with DNSSEC support, and will by default 41 silently trust signed SSHFP records. This can be controlled with 42 the VerifyHostKeyDNS client configuration setting. DNSSEC support 43 can be disabled entirely with the WITHOUT_LDNS option in src.conf. 44 4520130906: 46 The GNU Compiler Collection and C++ standard library (libstdc++) 47 are no longer built by default on platforms where clang is the system 48 compiler. You can enable them with the WITH_GCC and WITH_GNUCXX 49 options in src.conf. 50 5120130905: 52 The PROCDESC kernel option is now part of the GENERIC kernel 53 configuration and is required for the rwhod(8) to work. 54 If you are using custom kernel configuration, you should include 55 'options PROCDESC'. 56 5720130905: 58 The API and ABI related to the Capsicum framework was modified 59 in backward incompatible way. The userland libraries and programs 60 have to be recompiled to work with the new kernel. This includes the 61 following libraries and programs, but the whole buildworld is 62 advised: libc, libprocstat, dhclient, tcpdump, hastd, hastctl, 63 kdump, procstat, rwho, rwhod, uniq. 64 6520130903: 66 AES-NI intrinsic support has been added to gcc. The AES-NI module 67 has been updated to use this support. A new gcc is required to build 68 the aesni module on both i386 and amd64. 69 7020130827: 71 Thomas Dickey (vendor author thereof) reports that dialog(1) since 72 2011/10/18 has a bug in handling --hline. Testers and I noticed the 73 --hline is not ignored but displayed as a NULL string, regardless of 74 value. This will cause confusion in some bsdconfig dialogs where the 75 --hline is used to inform users which keybindings to use. This will 76 likewise affect any other persons relying on --hline. It also looks 77 rather strange seeing "[]" at the bottom of dialog(1) widgets when 78 passing --hline "anything". Thomas said he will have a look in a few 79 weeks. NOTE: The "[]" brackets appear with the left-edge where it 80 would normally appear given the width of text to display, but the 81 displayed text is not there (part of the bug). 82 8320130821: 84 The PADLOCK_RNG and RDRAND_RNG kernel options are now devices. 85 Thus "device padlock_rng" and "device rdrand_rng" should be 86 used instead of "options PADLOCK_RNG" & "options RDRAND_RNG". 87 8820130813: 89 WITH_ICONV has been split into two feature sets. WITH_ICONV now 90 enables just the iconv* functionality and is now on by default. 91 WITH_LIBICONV_COMPAT enables the libiconv api and link time 92 compatability. Set WITHOUT_ICONV to build the old way. 93 If you have been using WITH_ICONV before, you will very likely 94 need to turn on WITH_LIBICONV_COMPAT. 95 9620130806: 97 INVARIANTS option now enables DEBUG for code with OpenSolaris and 98 Illumos origin, including ZFS. If you have INVARIANTS in your 99 kernel configuration, then there is no need to set DEBUG or ZFS_DEBUG 100 explicitly. 101 DEBUG used to enable witness(9) tracking of OpenSolaris (mostly ZFS) 102 locks if WITNESS option was set. Because that generated a lot of 103 witness(9) reports and all of them were believed to be false 104 positives, this is no longer done. New option OPENSOLARIS_WITNESS 105 can be used to achieve the previous behavior. 106 10720130806: 108 Timer values in IPv6 data structures now use time_uptime instead 109 of time_second. Although this is not a user-visible functional 110 change, userland utilities which directly use them---ndp(8), 111 rtadvd(8), and rtsold(8) in the base system---need to be updated 112 to r253970 or later. 113 11420130802: 115 find -delete can now delete the pathnames given as arguments, 116 instead of only files found below them or if the pathname did 117 not contain any slashes. Formerly, the following error message 118 would result: 119 120 find: -delete: <path>: relative path potentially not safe 121 122 Deleting the pathnames given as arguments can be prevented 123 without error messages using -mindepth 1 or by changing 124 directory and passing "." as argument to find. This works in the 125 old as well as the new version of find. 126 12720130726: 128 Behavior of devfs rules path matching has been changed. 129 Pattern is now always matched against fully qualified devfs 130 path and slash characters must be explicitly matched by 131 slashes in pattern (FNM_PATHNAME). Rulesets involving devfs 132 subdirectories must be reviewed. 133 13420130716: 135 The default ARM ABI has changed to the ARM EABI. The old ABI is 136 incompatible with the ARM EABI and all programs and modules will 137 need to be rebuilt to work with a new kernel. 138 139 To keep using the old ABI ensure the WITHOUT_ARM_EABI knob is set. 140 141 NOTE: Support for the old ABI will be removed in the future and 142 users are advised to upgrade. 143 14420130709: 145 pkg_install has been disconnected from the build if you really need it 146 you should add WITH_PKGTOOLS in your src.conf(5). 147 14820130709: 149 Most of network statistics structures were changed to be able 150 keep 64-bits counters. Thus all tools, that work with networking 151 statistics, must be rebuilt (netstat(1), bsnmpd(1), etc.) 152 15320130629: 154 Fix targets that run multiple make's to use && rather than ; 155 so that subsequent steps depend on success of previous. 156 157 NOTE: if building 'universe' with -j* on stable/8 or stable/9 158 it would be better to start the build using bmake, to avoid 159 overloading the machine. 160 16120130618: 162 Fix a bug that allowed a tracing process (e.g. gdb) to write 163 to a memory-mapped file in the traced process's address space 164 even if neither the traced process nor the tracing process had 165 write access to that file. 166 16720130615: 168 CVS has been removed from the base system. An exact copy 169 of the code is available from the devel/cvs port. 170 17120130613: 172 Some people report the following error after the switch to bmake: 173 174 make: illegal option -- J 175 usage: make [-BPSXeiknpqrstv] [-C directory] [-D variable] 176 ... 177 *** [buildworld] Error code 2 178 179 this likely due to an old instance of make in 180 ${MAKEPATH} (${MAKEOBJDIRPREFIX}${.CURDIR}/make.${MACHINE}) 181 which src/Makefile will use that blindly, if it exists, so if 182 you see the above error: 183 184 rm -rf `make -V MAKEPATH` 185 186 should resolve it. 187 18820130516: 189 Use bmake by default. 190 Whereas before one could choose to build with bmake via 191 -DWITH_BMAKE one must now use -DWITHOUT_BMAKE to use the old 192 make. The goal is to remove these knobs for 10-RELEASE. 193 194 It is worth noting that bmake (like gmake) treats the command 195 line as the unit of failure, rather than statements within the 196 command line. Thus '(cd some/where && dosomething)' is safer 197 than 'cd some/where; dosomething'. The '()' allows consistent 198 behavior in parallel build. 199 20020130429: 201 Fix a bug that allows NFS clients to issue READDIR on files. 202 20320130426: 204 The WITHOUT_IDEA option has been removed because 205 the IDEA patent expired. 206 20720130426: 208 The sysctl which controls TRIM support under ZFS has been renamed 209 from vfs.zfs.trim_disable -> vfs.zfs.trim.enabled and has been 210 enabled by default. 211 21220130425: 213 The mergemaster command now uses the default MAKEOBJDIRPREFIX 214 rather than creating it's own in the temporary directory in 215 order allow access to bootstrapped versions of tools such as 216 install and mtree. When upgrading from version of FreeBSD where 217 the install command does not support -l, you will need to 218 install a new mergemaster command if mergemaster -p is required. 219 This can be accomplished with the command (cd src/usr.sbin/mergemaster 220 && make install). 221 22220130404: 223 Legacy ATA stack, disabled and replaced by new CAM-based one since 224 FreeBSD 9.0, completely removed from the sources. Kernel modules 225 atadisk and atapi*, user-level tools atacontrol and burncd are 226 removed. Kernel option `options ATA_CAM` is now permanently enabled 227 and removed. 228 22920130319: 230 SOCK_CLOEXEC and SOCK_NONBLOCK flags have been added to socket(2) 231 and socketpair(2). Software, in particular Kerberos, may 232 automatically detect and use these during building. The resulting 233 binaries will not work on older kernels. 234 23520130308: 236 CTL_DISABLE has also been added to the sparc64 GENERIC (for further 237 information, see the respective 20130304 entry). 238 23920130304: 240 Recent commits to callout(9) changed the size of struct callout, 241 so the KBI is probably heavily disturbed. Also, some functions 242 in callout(9)/sleep(9)/sleepqueue(9)/condvar(9) KPIs were replaced 243 by macros. Every kernel module using it won't load, so rebuild 244 is requested. 245 246 The ctl device has been re-enabled in GENERIC for i386 and amd64, 247 but does not initialize by default (because of the new CTL_DISABLE 248 option) to save memory. To re-enable it, remove the CTL_DISABLE 249 option from the kernel config file or set kern.cam.ctl.disable=0 250 in /boot/loader.conf. 251 25220130301: 253 The ctl device has been disabled in GENERIC for i386 and amd64. 254 This was done due to the extra memory being allocated at system 255 initialisation time by the ctl driver which was only used if 256 a CAM target device was created. This makes a FreeBSD system 257 unusable on 128MB or less of RAM. 258 25920130208: 260 A new compression method (lz4) has been merged to -HEAD. Please 261 refer to zpool-features(7) for more information. 262 263 Please refer to the "ZFS notes" section of this file for information 264 on upgrading boot ZFS pools. 265 26620130129: 267 A BSD-licensed patch(1) variant has been added and is installed 268 as bsdpatch, being the GNU version the default patch. 269 To inverse the logic and use the BSD-licensed one as default, 270 while having the GNU version installed as gnupatch, rebuild 271 and install world with the WITH_BSD_PATCH knob set. 272 27320130121: 274 Due to the use of the new -l option to install(1) during build 275 and install, you must take care not to directly set the INSTALL 276 make variable in your /etc/make.conf, /etc/src.conf, or on the 277 command line. If you wish to use the -C flag for all installs 278 you may be able to add INSTALL+=-C to /etc/make.conf or 279 /etc/src.conf. 280 28120130118: 282 The install(1) option -M has changed meaning and now takes an 283 argument that is a file or path to append logs to. In the 284 unlikely event that -M was the last option on the command line 285 and the command line contained at least two files and a target 286 directory the first file will have logs appended to it. The -M 287 option served little practical purpose in the last decade so its 288 use is expected to be extremely rare. 289 29020121223: 291 After switching to Clang as the default compiler some users of ZFS 292 on i386 systems started to experience stack overflow kernel panics. 293 Please consider using 'options KSTACK_PAGES=4' in such configurations. 294 29520121222: 296 GEOM_LABEL now mangles label names read from file system metadata. 297 Mangling affect labels containing spaces, non-printable characters, 298 '%' or '"'. Device names in /etc/fstab and other places may need to 299 be updated. 300 30120121217: 302 By default, only the 10 most recent kernel dumps will be saved. To 303 restore the previous behaviour (no limit on the number of kernel dumps 304 stored in the dump directory) add the following line to /etc/rc.conf: 305 306 savecore_flags="" 307 30820121201: 309 With the addition of auditdistd(8), a new auditdistd user is now 310 required during installworld. "mergemaster -p" can be used to 311 add the user prior to installworld, as documented in the handbook. 312 31320121117: 314 The sin6_scope_id member variable in struct sockaddr_in6 is now 315 filled by the kernel before passing the structure to the userland via 316 sysctl or routing socket. This means the KAME-specific embedded scope 317 id in sin6_addr.s6_addr[2] is always cleared in userland application. 318 This behavior can be controlled by net.inet6.ip6.deembed_scopeid. 319 __FreeBSD_version is bumped to 1000025. 320 32120121105: 322 On i386 and amd64 systems WITH_CLANG_IS_CC is now the default. 323 This means that the world and kernel will be compiled with clang 324 and that clang will be installed as /usr/bin/cc, /usr/bin/c++, 325 and /usr/bin/cpp. To disable this behavior and revert to building 326 with gcc, compile with WITHOUT_CLANG_IS_CC. Really old versions 327 of current may need to bootstrap WITHOUT_CLANG first if the clang 328 build fails (its compatibility window doesn't extend to the 9 stable 329 branch point). 330 33120121102: 332 The IPFIREWALL_FORWARD kernel option has been removed. Its 333 functionality now turned on by default. 334 33520121023: 336 The ZERO_COPY_SOCKET kernel option has been removed and 337 split into SOCKET_SEND_COW and SOCKET_RECV_PFLIP. 338 NB: SOCKET_SEND_COW uses the VM page based copy-on-write 339 mechanism which is not safe and may result in kernel crashes. 340 NB: The SOCKET_RECV_PFLIP mechanism is useless as no current 341 driver supports disposeable external page sized mbuf storage. 342 Proper replacements for both zero-copy mechanisms are under 343 consideration and will eventually lead to complete removal 344 of the two kernel options. 345 34620121023: 347 The IPv4 network stack has been converted to network byte 348 order. The following modules need to be recompiled together 349 with kernel: carp(4), divert(4), gif(4), siftr(4), gre(4), 350 pf(4), ipfw(4), ng_ipfw(4), stf(4). 351 35220121022: 353 Support for non-MPSAFE filesystems was removed from VFS. The 354 VFS_VERSION was bumped, all filesystem modules shall be 355 recompiled. 356 35720121018: 358 All the non-MPSAFE filesystems have been disconnected from 359 the build. The full list includes: codafs, hpfs, ntfs, nwfs, 360 portalfs, smbfs, xfs. 361 36220121016: 363 The interface cloning API and ABI has changed. The following 364 modules need to be recompiled together with kernel: 365 ipfw(4), pfsync(4), pflog(4), usb(4), wlan(4), stf(4), 366 vlan(4), disc(4), edsc(4), if_bridge(4), gif(4), tap(4), 367 faith(4), epair(4), enc(4), tun(4), if_lagg(4), gre(4). 368 36920121015: 370 The sdhci driver was split in two parts: sdhci (generic SD Host 371 Controller logic) and sdhci_pci (actual hardware driver). 372 No kernel config modifications are required, but if you 373 load sdhc as a module you must switch to sdhci_pci instead. 374 37520121014: 376 Import the FUSE kernel and userland support into base system. 377 37820121013: 379 The GNU sort(1) program has been removed since the BSD-licensed 380 sort(1) has been the default for quite some time and no serious 381 problems have been reported. The corresponding WITH_GNU_SORT 382 knob has also gone. 383 38420121006: 385 The pfil(9) API/ABI for AF_INET family has been changed. Packet 386 filtering modules: pf(4), ipfw(4), ipfilter(4) need to be recompiled 387 with new kernel. 388 38920121001: 390 The net80211(4) ABI has been changed to allow for improved driver 391 PS-POLL and power-save support. All wireless drivers need to be 392 recompiled to work with the new kernel. 393 39420120913: 395 The random(4) support for the VIA hardware random number 396 generator (`PADLOCK') is no longer enabled unconditionally. 397 Add the padlock_rng device in the custom kernel config if 398 needed. The GENERIC kernels on i386 and amd64 do include the 399 device, so the change only affects the custom kernel 400 configurations. 401 40220120908: 403 The pf(4) packet filter ABI has been changed. pfctl(8) and 404 snmp_pf module need to be recompiled to work with new kernel. 405 40620120828: 407 A new ZFS feature flag "com.delphix:empty_bpobj" has been merged 408 to -HEAD. Pools that have empty_bpobj in active state can not be 409 imported read-write with ZFS implementations that do not support 410 this feature. For more information read the zpool-features(5) 411 manual page. 412 41320120727: 414 The sparc64 ZFS loader has been changed to no longer try to auto- 415 detect ZFS providers based on diskN aliases but now requires these 416 to be explicitly listed in the OFW boot-device environment variable. 417 41820120712: 419 The OpenSSL has been upgraded to 1.0.1c. Any binaries requiring 420 libcrypto.so.6 or libssl.so.6 must be recompiled. Also, there are 421 configuration changes. Make sure to merge /etc/ssl/openssl.cnf. 422 42320120712: 424 The following sysctls and tunables have been renamed for consistency 425 with other variables: 426 kern.cam.da.da_send_ordered -> kern.cam.da.send_ordered 427 kern.cam.ada.ada_send_ordered -> kern.cam.ada.send_ordered 428 42920120628: 430 The sort utility has been replaced with BSD sort. For now, GNU sort 431 is also available as "gnusort" or the default can be set back to 432 GNU sort by setting WITH_GNU_SORT. In this case, BSD sort will be 433 installed as "bsdsort". 434 43520120611: 436 A new version of ZFS (pool version 5000) has been merged to -HEAD. 437 Starting with this version the old system of ZFS pool versioning 438 is superseded by "feature flags". This concept enables forward 439 compatibility against certain future changes in functionality of ZFS 440 pools. The first read-only compatible "feature flag" for ZFS pools 441 is named "com.delphix:async_destroy". For more information 442 read the new zpool-features(5) manual page. 443 Please refer to the "ZFS notes" section of this file for information 444 on upgrading boot ZFS pools. 445 44620120417: 447 The malloc(3) implementation embedded in libc now uses sources imported 448 as contrib/jemalloc. The most disruptive API change is to 449 /etc/malloc.conf. If your system has an old-style /etc/malloc.conf, 450 delete it prior to installworld, and optionally re-create it using the 451 new format after rebooting. See malloc.conf(5) for details 452 (specifically the TUNING section and the "opt.*" entries in the MALLCTL 453 NAMESPACE section). 454 45520120328: 456 Big-endian MIPS TARGET_ARCH values no longer end in "eb". mips64eb 457 is now spelled mips64. mipsn32eb is now spelled mipsn32. mipseb is 458 now spelled mips. This is to aid compatibility with third-party 459 software that expects this naming scheme in uname(3). Little-endian 460 settings are unchanged. If you are updating a big-endian mips64 machine 461 from before this change, you may need to set MACHINE_ARCH=mips64 in 462 your environment before the new build system will recognize your machine. 463 46420120306: 465 Disable by default the option VFS_ALLOW_NONMPSAFE for all supported 466 platforms. 467 46820120229: 469 Now unix domain sockets behave "as expected" on nullfs(5). Previously 470 nullfs(5) did not pass through all behaviours to the underlying layer, 471 as a result if we bound to a socket on the lower layer we could connect 472 only to the lower path; if we bound to the upper layer we could connect 473 only to the upper path. The new behavior is one can connect to both the 474 lower and the upper paths regardless what layer path one binds to. 475 47620120211: 477 The getifaddrs upgrade path broken with 20111215 has been restored. 478 If you have upgraded in between 20111215 and 20120209 you need to 479 recompile libc again with your kernel. You still need to recompile 480 world to be able to configure CARP but this restriction already 481 comes from 20111215. 482 48320120114: 484 The set_rcvar() function has been removed from /etc/rc.subr. All 485 base and ports rc.d scripts have been updated, so if you have a 486 port installed with a script in /usr/local/etc/rc.d you can either 487 hand-edit the rcvar= line, or reinstall the port. 488 489 An easy way to handle the mass-update of /etc/rc.d: 490 rm /etc/rc.d/* && mergemaster -i 491 49220120109: 493 panic(9) now stops other CPUs in the SMP systems, disables interrupts 494 on the current CPU and prevents other threads from running. 495 This behavior can be reverted using the kern.stop_scheduler_on_panic 496 tunable/sysctl. 497 The new behavior can be incompatible with kern.sync_on_panic. 498 49920111215: 500 The carp(4) facility has been changed significantly. Configuration 501 of the CARP protocol via ifconfig(8) has changed, as well as format 502 of CARP events submitted to devd(8) has changed. See manual pages 503 for more information. The arpbalance feature of carp(4) is currently 504 not supported anymore. 505 506 Size of struct in_aliasreq, struct in6_aliasreq has changed. User 507 utilities using SIOCAIFADDR, SIOCAIFADDR_IN6, e.g. ifconfig(8), 508 need to be recompiled. 509 51020111122: 511 The acpi_wmi(4) status device /dev/wmistat has been renamed to 512 /dev/wmistat0. 513 51420111108: 515 The option VFS_ALLOW_NONMPSAFE option has been added in order to 516 explicitely support non-MPSAFE filesystems. 517 It is on by default for all supported platform at this present 518 time. 519 52020111101: 521 The broken amd(4) driver has been replaced with esp(4) in the amd64, 522 i386 and pc98 GENERIC kernel configuration files. 523 52420110930: 525 sysinstall has been removed 526 52720110923: 528 The stable/9 branch created in subversion. This corresponds to the 529 RELENG_9 branch in CVS. 530 53120110913: 532 This commit modifies vfs_register() so that it uses a hash 533 calculation to set vfc_typenum, which is enabled by default. 534 The first time a system is booted after this change, the 535 vfc_typenum values will change for all file systems. The 536 main effect of this is a change to the NFS server file handles 537 for file systems that use vfc_typenum in their fsid, such as ZFS. 538 It will, however, prevent vfc_typenum from changing when file 539 systems are loaded in a different order for subsequent reboots. 540 To disable this, you can set vfs.typenumhash=0 in /boot/loader.conf 541 until you are ready to remount all NFS clients after a reboot. 542 54320110828: 544 Bump the shared library version numbers for libraries that 545 do not use symbol versioning, have changed the ABI compared 546 to stable/8 and which shared library version was not bumped. 547 Done as part of 9.0-RELEASE cycle. 548 54920110815: 550 During the merge of Capsicum features, the fget(9) KPI was modified. 551 This may require the rebuilding of out-of-tree device drivers -- 552 issues have been reported specifically with the nVidia device driver. 553 __FreeBSD_version is bumped to 900041. 554 555 Also, there is a period between 20110811 and 20110814 where the 556 special devices /dev/{stdin,stdout,stderr} did not work correctly. 557 Building world from a kernel during that window may not work. 558 55920110628: 560 The packet filter (pf) code has been updated to OpenBSD 4.5. 561 You need to update userland tools to be in sync with kernel. 562 This update breaks backward compatibility with earlier pfsync(4) 563 versions. Care must be taken when updating redundant firewall setups. 564 56520110608: 566 The following sysctls and tunables are retired on x86 platforms: 567 machdep.hlt_cpus 568 machdep.hlt_logical_cpus 569 The following sysctl is retired: 570 machdep.hyperthreading_allowed 571 The sysctls were supposed to provide a way to dynamically offline and 572 online selected CPUs on x86 platforms, but the implementation has not 573 been reliable especially with SCHED_ULE scheduler. 574 machdep.hyperthreading_allowed tunable is still available to ignore 575 hyperthreading CPUs at OS level. 576 Individual CPUs can be disabled using hint.lapic.X.disabled tunable, 577 where X is an APIC ID of a CPU. Be advised, though, that disabling 578 CPUs in non-uniform fashion will result in non-uniform topology and 579 may lead to sub-optimal system performance with SCHED_ULE, which is 580 a default scheduler. 581 58220110607: 583 cpumask_t type is retired and cpuset_t is used in order to describe 584 a mask of CPUs. 585 58620110531: 587 Changes to ifconfig(8) for dynamic address family detection mandate 588 that you are running a kernel of 20110525 or later. Make sure to 589 follow the update procedure to boot a new kernel before installing 590 world. 591 59220110513: 593 Support for sun4v architecture is officially dropped 594 59520110503: 596 Several KPI breaking changes have been committed to the mii(4) layer, 597 the PHY drivers and consequently some Ethernet drivers using mii(4). 598 This means that miibus.ko and the modules of the affected Ethernet 599 drivers need to be recompiled. 600 601 Note to kernel developers: Given that the OUI bit reversion problem 602 was fixed as part of these changes all mii(4) commits related to OUIs, 603 i.e. to sys/dev/mii/miidevs, PHY driver probing and vendor specific 604 handling, no longer can be merged verbatim to stable/8 and previous 605 branches. 606 60720110430: 608 Users of the Atheros AR71xx SoC code now need to add 'device ar71xx_pci' 609 into their kernel configurations along with 'device pci'. 610 61120110427: 612 The default NFS client is now the new NFS client, so fstype "newnfs" 613 is now "nfs" and the regular/old NFS client is now fstype "oldnfs". 614 Although mounts via fstype "nfs" will usually work without userland 615 changes, it is recommended that the mount(8) and mount_nfs(8) 616 commands be rebuilt from sources and that a link to mount_nfs called 617 mount_oldnfs be created. The new client is compiled into the 618 kernel with "options NFSCL" and this is needed for diskless root 619 file systems. The GENERIC kernel configs have been changed to use 620 NFSCL and NFSD (the new server) instead of NFSCLIENT and NFSSERVER. 621 To use the regular/old client, you can "mount -t oldnfs ...". For 622 a diskless root file system, you must also include a line like: 623 624 vfs.root.mountfrom="oldnfs:" 625 626 in the boot/loader.conf on the root fs on the NFS server to make 627 a diskless root fs use the old client. 628 62920110424: 630 The GENERIC kernels for all architectures now default to the new 631 CAM-based ATA stack. It means that all legacy ATA drivers were 632 removed and replaced by respective CAM drivers. If you are using 633 ATA device names in /etc/fstab or other places, make sure to update 634 them respectively (adX -> adaY, acdX -> cdY, afdX -> daY, astX -> saY, 635 where 'Y's are the sequential numbers starting from zero for each type 636 in order of detection, unless configured otherwise with tunables, 637 see cam(4)). There will be symbolic links created in /dev/ to map 638 old adX devices to the respective adaY. They should provide basic 639 compatibility for file systems mounting in most cases, but they do 640 not support old user-level APIs and do not have respective providers 641 in GEOM. Consider using updated management tools with new device names. 642 643 It is possible to load devices ahci, ata, siis and mvs as modules, 644 but option ATA_CAM should remain in kernel configuration to make ata 645 module work as CAM driver supporting legacy ATA controllers. Device ata 646 still can be used in modular fashion (atacore + ...). Modules atadisk 647 and atapi* are not used and won't affect operation in ATA_CAM mode. 648 Note that to use CAM-based ATA kernel should include CAM devices 649 scbus, pass, da (or explicitly ada), cd and optionally others. All of 650 them are parts of the cam module. 651 652 ataraid(4) functionality is now supported by the RAID GEOM class. 653 To use it you can load geom_raid kernel module and use graid(8) tool 654 for management. Instead of /dev/arX device names, use /dev/raid/rX. 655 656 No kernel config options or code have been removed, so if a problem 657 arises, please report it and optionally revert to the old ATA stack. 658 In order to do it you can remove from the kernel config: 659 options ATA_CAM 660 device ahci 661 device mvs 662 device siis 663 , and instead add back: 664 device atadisk # ATA disk drives 665 device ataraid # ATA RAID drives 666 device atapicd # ATAPI CDROM drives 667 device atapifd # ATAPI floppy drives 668 device atapist # ATAPI tape drives 669 67020110423: 671 The default NFS server has been changed to the new server, which 672 was referred to as the experimental server. If you need to switch 673 back to the old NFS server, you must now put the "-o" option on 674 both the mountd and nfsd commands. This can be done using the 675 mountd_flags and nfs_server_flags rc.conf variables until an 676 update to the rc scripts is committed, which is coming soon. 677 67820110418: 679 The GNU Objective-C runtime library (libobjc), and other Objective-C 680 related components have been removed from the base system. If you 681 require an Objective-C library, please use one of the available ports. 682 68320110331: 684 ath(4) has been split into bus- and device- modules. if_ath contains 685 the HAL, the TX rate control and the network device code. if_ath_pci 686 contains the PCI bus glue. For Atheros MIPS embedded systems, if_ath_ahb 687 contains the AHB glue. Users need to load both if_ath_pci and if_ath 688 in order to use ath on everything else. 689 690 TO REPEAT: if_ath_ahb is not needed for normal users. Normal users only 691 need to load if_ath and if_ath_pci for ath(4) operation. 692 69320110314: 694 As part of the replacement of sysinstall, the process of building 695 release media has changed significantly. For details, please re-read 696 release(7), which has been updated to reflect the new build process. 697 69820110218: 699 GNU binutils 2.17.50 (as of 2007-07-03) has been merged to -HEAD. This 700 is the last available version under GPLv2. It brings a number of new 701 features, such as support for newer x86 CPU's (with SSE-3, SSSE-3, SSE 702 4.1 and SSE 4.2), better support for powerpc64, a number of new 703 directives, and lots of other small improvements. See the ChangeLog 704 file in contrib/binutils for the full details. 705 70620110218: 707 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868 708 compliant, and will now use half of hash for authentication. 709 This will break interoperability with all stacks (including all 710 actual FreeBSD versions) who implement 711 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for 712 authentication). 713 The only workaround with such peers is to use another HMAC 714 algorithm for IPsec ("phase 2") authentication. 715 71620110207: 717 Remove the uio_yield prototype and symbol. This function has 718 been misnamed since it was introduced and should not be 719 globally exposed with this name. The equivalent functionality 720 is now available using kern_yield(curthread->td_user_pri). 721 The function remains undocumented. 722 72320110112: 724 A SYSCTL_[ADD_]UQUAD was added for unsigned uint64_t pointers, 725 symmetric with the existing SYSCTL_[ADD_]QUAD. Type checking 726 for scalar sysctls is defined but disabled. Code that needs 727 UQUAD to pass the type checking that must compile on older 728 systems where the define is not present can check against 729 __FreeBSD_version >= 900030. 730 731 The system dialog(1) has been replaced with a new version previously 732 in ports as devel/cdialog. dialog(1) is mostly command-line compatible 733 with the previous version, but the libdialog associated with it has 734 a largely incompatible API. As such, the original version of libdialog 735 will be kept temporarily as libodialog, until its base system consumers 736 are replaced or updated. Bump __FreeBSD_version to 900030. 737 73820110103: 739 If you are trying to run make universe on a -stable system, and you get 740 the following warning: 741 "Makefile", line 356: "Target architecture for i386/conf/GENERIC 742 unknown. config(8) likely too old." 743 or something similar to it, then you must upgrade your -stable system 744 to 8.2-Release or newer (really, any time after r210146 7/15/2010 in 745 stable/8) or build the config from the latest stable/8 branch and 746 install it on your system. 747 748 Prior to this date, building a current universe on 8-stable system from 749 between 7/15/2010 and 1/2/2011 would result in a weird shell parsing 750 error in the first kernel build phase. A new config on those old 751 systems will fix that problem for older versions of -current. 752 75320101228: 754 The TCP stack has been modified to allow Khelp modules to interact with 755 it via helper hook points and store per-connection data in the TCP 756 control block. Bump __FreeBSD_version to 900029. User space tools that 757 rely on the size of struct tcpcb in tcp_var.h (e.g. sockstat) need to 758 be recompiled. 759 76020101114: 761 Generic IEEE 802.3 annex 31B full duplex flow control support has been 762 added to mii(4) and bge(4), bce(4), msk(4), nfe(4) and stge(4) along 763 with brgphy(4), e1000phy(4) as well as ip1000phy() have been converted 764 to take advantage of it instead of using custom implementations. This 765 means that these drivers now no longer unconditionally advertise 766 support for flow control but only do so if flow control is a selected 767 media option. This was implemented in the generic support that way in 768 order to allow flow control to be switched on and off via ifconfig(8) 769 with the PHY specific default to typically off in order to protect 770 from unwanted effects. Consequently, if you used flow control with 771 one of the above mentioned drivers you now need to explicitly enable 772 it, for example via: 773 ifconfig bge0 media auto mediaopt flowcontrol 774 775 Along with the above mentioned changes generic support for setting 776 1000baseT master mode also has been added and brgphy(4), ciphy(4), 777 e1000phy(4) as well as ip1000phy(4) have been converted to take 778 advantage of it. This means that these drivers now no longer take the 779 link0 parameter for selecting master mode but the master media option 780 has to be used instead, for example like in the following: 781 ifconfig bge0 media 1000baseT mediaopt full-duplex,master 782 783 Selection of master mode now is also available with all other PHY 784 drivers supporting 1000baseT. 785 78620101111: 787 The TCP stack has received a significant update to add support for 788 modularised congestion control and generally improve the clarity of 789 congestion control decisions. Bump __FreeBSD_version to 900025. User 790 space tools that rely on the size of struct tcpcb in tcp_var.h (e.g. 791 sockstat) need to be recompiled. 792 79320101002: 794 The man(1) utility has been replaced by a new version that no longer 795 uses /etc/manpath.config. Please consult man.conf(5) for how to 796 migrate local entries to the new format. 797 79820100928: 799 The copyright strings printed by login(1) and sshd(8) at the time of a 800 new connection have been removed to follow other operating systems and 801 upstream sshd. 802 80320100915: 804 A workaround for a fixed ld bug has been removed in kernel code, 805 so make sure that your system ld is built from sources after 806 revision 210245 from 2010-07-19 (r211583 if building head kernel 807 on stable/8, r211584 for stable/7; both from 2010-08-21). 808 A symptom of incorrect ld version is different addresses for 809 set_pcpu section and __start_set_pcpu symbol in kernel and/or modules. 810 81120100913: 812 The $ipv6_prefer variable in rc.conf(5) has been split into 813 $ip6addrctl_policy and $ipv6_activate_all_interfaces. 814 815 The $ip6addrctl_policy is a variable to choose a pre-defined 816 address selection policy set by ip6addrctl(8). A value 817 "ipv4_prefer", "ipv6_prefer" or "AUTO" can be specified. The 818 default is "AUTO". 819 820 The $ipv6_activate_all_interfaces specifies whether IFDISABLED 821 flag (see an entry of 20090926) is set on an interface with no 822 corresponding $ifconfig_IF_ipv6 line. The default is "NO" for 823 security reason. If you want IPv6 link-local address on all 824 interfaces by default, set this to "YES". 825 826 The old ipv6_prefer="YES" is equivalent to 827 ipv6_activate_all_interfaces="YES" and 828 ip6addrctl_policy="ipv6_prefer". 829 83020100913: 831 DTrace has grown support for userland tracing. Due to this, DTrace is 832 now i386 and amd64 only. 833 dtruss(1) is now installed by default on those systems and a new 834 kernel module is needed for userland tracing: fasttrap. 835 No changes to your kernel config file are necessary to enable 836 userland tracing, but you might consider adding 'STRIP=' and 837 'CFLAGS+=-fno-omit-frame-pointer' to your make.conf if you want 838 to have informative userland stack traces in DTrace (ustack). 839 84020100725: 841 The acpi_aiboost(4) driver has been removed in favor of the new 842 aibs(4) driver. You should update your kernel configuration file. 843 84420100722: 845 BSD grep has been imported to the base system and it is built by 846 default. It is completely BSD licensed, highly GNU-compatible, uses 847 less memory than its GNU counterpart and has a small codebase. 848 However, it is slower than its GNU counterpart, which is mostly 849 noticeable for larger searches, for smaller ones it is measurable 850 but not significant. The reason is complex, the most important factor 851 is that we lack a modern and efficient regex library and GNU 852 overcomes this by optimizing the searches internally. Future work 853 on improving the regex performance is planned, for the meantime, 854 users that need better performance, can build GNU grep instead by 855 setting the WITH_GNU_GREP knob. 856 85720100713: 858 Due to the import of powerpc64 support, all existing powerpc kernel 859 configuration files must be updated with a machine directive like this: 860 machine powerpc powerpc 861 862 In addition, an updated config(8) is required to build powerpc kernels 863 after this change. 864 86520100713: 866 A new version of ZFS (version 15) has been merged to -HEAD. 867 This version uses a python library for the following subcommands: 868 zfs allow, zfs unallow, zfs groupspace, zfs userspace. 869 For full functionality of these commands the following port must 870 be installed: sysutils/py-zfs 871 87220100429: 873 'vm_page's are now hashed by physical address to an array of mutexes. 874 Currently this is only used to serialize access to hold_count. Over 875 time the page queue mutex will be peeled away. This changes the size 876 of pmap on every architecture. And requires all callers of vm_page_hold 877 and vm_page_unhold to be updated. 878 87920100402: 880 WITH_CTF can now be specified in src.conf (not recommended, there 881 are some problems with static executables), make.conf (would also 882 affect ports which do not use GNU make and do not override the 883 compile targets) or in the kernel config (via "makeoptions 884 WITH_CTF=yes"). 885 When WITH_CTF was specified there before this was silently ignored, 886 so make sure that WITH_CTF is not used in places which could lead 887 to unwanted behavior. 888 88920100311: 890 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32 891 to allow 32-bit compatibility on non-x86 platforms. All kernel 892 configurations on amd64 and ia64 platforms using these options must 893 be modified accordingly. 894 89520100113: 896 The utmp user accounting database has been replaced with utmpx, 897 the user accounting interface standardized by POSIX. 898 Unfortunately the semantics of utmp and utmpx don't match, 899 making it practically impossible to support both interfaces. 900 The user accounting database is used by tools like finger(1), 901 last(1), talk(1), w(1) and ac(8). 902 903 All applications in the base system use utmpx. This means only 904 local binaries (e.g. from the ports tree) may still use these 905 utmp database files. These applications must be rebuilt to make 906 use of utmpx. 907 908 After the system has been upgraded, it is safe to remove the old 909 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*), 910 assuming their contents is of no importance anymore. Old wtmp 911 databases can only be used by last(1) and ac(8) after they have 912 been converted to the new format using wtmpcvt(1). 913 91420100108: 915 Introduce the kernel thread "deadlock resolver" (which can be enabled 916 via the DEADLKRES option, see NOTES for more details) and the 917 sleepq_type() function for sleepqueues. 918 91920091202: 920 The rc.firewall and rc.firewall6 were unified, and 921 rc.firewall6 and rc.d/ip6fw were removed. 922 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc 923 variables are obsoleted. Instead, the following new rc 924 variables are added to rc.d/ipfw: 925 926 firewall_client_net_ipv6, firewall_simple_iif_ipv6, 927 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6, 928 firewall_simple_onet_ipv6, firewall_trusted_ipv6 929 930 The meanings correspond to the relevant IPv4 variables. 931 93220091125: 933 8.0-RELEASE. 934 93520091113: 936 The default terminal emulation for syscons(4) has been changed 937 from cons25 to xterm on all platforms except pc98. This means 938 that the /etc/ttys file needs to be updated to ensure correct 939 operation of applications on the console. 940 941 The terminal emulation style can be toggled per window by using 942 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration 943 options can be used to change the compile-time default back to 944 cons25. 945 946 To prevent graphical artifacts, make sure the TERM environment 947 variable is set to match the terminal emulation that is being 948 performed by syscons(4). 949 95020091109: 951 The layout of the structure ieee80211req_scan_result has changed. 952 Applications that require wireless scan results (e.g. ifconfig(8)) 953 from net80211 need to be recompiled. 954 955 Applications such as wpa_supplicant(8) may require a full world 956 build without using NO_CLEAN in order to get synchronized with the 957 new structure. 958 95920091025: 960 The iwn(4) driver has been updated to support the 5000 and 5150 series. 961 There's one kernel module for each firmware. Adding "device iwnfw" 962 to the kernel configuration file means including all three firmware 963 images inside the kernel. If you want to include just the one for 964 your wireless card, use the devices iwn4965fw, iwn5000fw or 965 iwn5150fw. 966 96720090926: 968 The rc.d/network_ipv6, IPv6 configuration script has been integrated 969 into rc.d/netif. The changes are the following: 970 971 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF 972 for IPv4. For aliases, $ifconfig_IF_aliasN should be used. 973 Note that both variables need the "inet6" keyword at the head. 974 975 Do not set $ipv6_network_interfaces manually if you do not 976 understand what you are doing. It is not needed in most cases. 977 978 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but 979 they are obsolete. 980 981 2. $ipv6_enable is obsolete. Use $ipv6_prefer and 982 "inet6 accept_rtadv" keyword in ifconfig(8) instead. 983 984 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and 985 all configured interfaces have "inet6 accept_rtadv" in the 986 $ifconfig_IF_ipv6. These are for backward compatibility. 987 988 3. A new variable $ipv6_prefer has been added. If NO, IPv6 989 functionality of interfaces with no corresponding 990 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag, 991 and the default address selection policy of ip6addrctl(8) 992 is the IPv4-preferred one (see rc.d/ip6addrctl for more details). 993 Note that if you want to configure IPv6 functionality on the 994 disabled interfaces after boot, first you need to clear the flag by 995 using ifconfig(8) like: 996 997 ifconfig em0 inet6 -ifdisabled 998 999 If YES, the default address selection policy is set as 1000 IPv6-preferred. 1001 1002 The default value of $ipv6_prefer is NO. 1003 1004 4. If your system need to receive Router Advertisement messages, 1005 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8) 1006 scripts automatically invoke rtsol(8) when the interface becomes 1007 UP. The Router Advertisement messages are used for SLAAC 1008 (State-Less Address AutoConfiguration). 1009 101020090922: 1011 802.11s D3.03 support was committed. This is incompatible with the 1012 previous code, which was based on D3.0. 1013 101420090912: 1015 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value 1016 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to 1017 control whether accepting Router Advertisement messages or not. 1018 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and 1019 a sysctl variable net.inet6.ip6.auto_linklocal is its default value. 1020 The ifconfig(8) utility now supports these flags. 1021 102220090910: 1023 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for 1024 mount(8) and -a option for df(1) to see them. 1025 102620090825: 1027 The old tunable hw.bus.devctl_disable has been superseded by 1028 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be 1029 replaced by hw.bus.devctl_queue=0. The default for this new tunable 1030 is 1000. 1031 103220090813: 1033 Remove the option STOP_NMI. The default action is now to use NMI only 1034 for KDB via the newly introduced function stop_cpus_hard() and 1035 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64. 1036 103720090803: 1038 The stable/8 branch created in subversion. This corresponds to the 1039 RELENG_8 branch in CVS. 1040 104120090719: 1042 Bump the shared library version numbers for all libraries that do not 1043 use symbol versioning as part of the 8.0-RELEASE cycle. Bump 1044 __FreeBSD_version to 800105. 1045 104620090714: 1047 Due to changes in the implementation of virtual network stack support, 1048 all network-related kernel modules must be recompiled. As this change 1049 breaks the ABI, bump __FreeBSD_version to 800104. 1050 105120090713: 1052 The TOE interface to the TCP syncache has been modified to remove 1053 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. 1054 The cxgb driver is the only TOE consumer affected by this change, and 1055 needs to be recompiled along with the kernel. As this change breaks 1056 the ABI, bump __FreeBSD_version to 800103. 1057 105820090712: 1059 Padding has been added to struct tcpcb, sackhint and tcpstat in 1060 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst 1061 maintaining the ABI. However, this change breaks the ABI, so bump 1062 __FreeBSD_version to 800102. User space tools that rely on the size of 1063 any of these structs (e.g. sockstat) need to be recompiled. 1064 106520090630: 1066 The NFS_LEGACYRPC option has been removed along with the old kernel 1067 RPC implementation that this option selected. Kernel configurations 1068 may need to be adjusted. 1069 107020090629: 1071 The network interface device nodes at /dev/net/<interface> have been 1072 removed. All ioctl operations can be performed the normal way using 1073 routing sockets. The kqueue functionality can generally be replaced 1074 with routing sockets. 1075 107620090628: 1077 The documentation from the FreeBSD Documentation Project (Handbook, 1078 FAQ, etc.) is now installed via packages by sysinstall(8) and under 1079 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc. 1080 108120090624: 1082 The ABI of various structures related to the SYSV IPC API have been 1083 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel 1084 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to 1085 800100. 1086 108720090622: 1088 Layout of struct vnet has changed as routing related variables were 1089 moved to their own Vimage module. Modules need to be recompiled. Bump 1090 __FreeBSD_version to 800099. 1091 109220090619: 1093 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024 1094 respectively. As long as no more than 16 groups per process are used, 1095 no changes should be visible. When more than 16 groups are used, old 1096 binaries may fail if they call getgroups() or getgrouplist() with 1097 statically sized storage. Recompiling will work around this, but 1098 applications should be modified to use dynamically allocated storage 1099 for group arrays as POSIX.1-2008 does not cap an implementation's 1100 number of supported groups at NGROUPS_MAX+1 as previous versions did. 1101 1102 NFS and portalfs mounts may also be affected as the list of groups is 1103 truncated to 16. Users of NFS who use more than 16 groups, should 1104 take care that negative group permissions are not used on the exported 1105 file systems as they will not be reliable unless a GSSAPI based 1106 authentication method is used. 1107 110820090616: 1109 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This 1110 option compiles in the support for adaptive spinning for lockmgrs 1111 which want to enable it. The lockinit() function now accepts the flag 1112 LK_ADAPTIVE in order to make the lock object subject to adaptive 1113 spinning when both held in write and read mode. 1114 111520090613: 1116 The layout of the structure returned by IEEE80211_IOC_STA_INFO has 1117 changed. User applications that use this ioctl need to be rebuilt. 1118 111920090611: 1120 The layout of struct thread has changed. Kernel and modules need to 1121 be rebuilt. 1122 112320090608: 1124 The layout of structs ifnet, domain, protosw and vnet_net has changed. 1125 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097. 1126 112720090602: 1128 window(1) has been removed from the base system. It can now be 1129 installed from ports. The port is called misc/window. 1130 113120090601: 1132 The way we are storing and accessing `routing table' entries has 1133 changed. Programs reading the FIB, like netstat, need to be 1134 re-compiled. 1135 113620090601: 1137 A new netisr implementation has been added for FreeBSD 8. Network 1138 file system modules, such as igmp, ipdivert, and others, should be 1139 rebuilt. 1140 Bump __FreeBSD_version to 800096. 1141 114220090530: 1143 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no 1144 more valid. 1145 114620090530: 1147 Add VOP_ACCESSX(9). File system modules need to be rebuilt. 1148 Bump __FreeBSD_version to 800094. 1149 115020090529: 1151 Add mnt_xflag field to 'struct mount'. File system modules need to be 1152 rebuilt. 1153 Bump __FreeBSD_version to 800093. 1154 115520090528: 1156 The compiling option ADAPTIVE_SX has been retired while it has been 1157 introduced the option NO_ADAPTIVE_SX which handles the reversed logic. 1158 The KPI for sx_init_flags() changes as accepting flags: 1159 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has 1160 been introduced in order to handle the reversed logic. 1161 Bump __FreeBSD_version to 800092. 1162 116320090527: 1164 Add support for hierarchical jails. Remove global securelevel. 1165 Bump __FreeBSD_version to 800091. 1166 116720090523: 1168 The layout of struct vnet_net has changed, therefore modules 1169 need to be rebuilt. 1170 Bump __FreeBSD_version to 800090. 1171 117220090523: 1173 The newly imported zic(8) produces a new format in the output. Please 1174 run tzsetup(8) to install the newly created data to /etc/localtime. 1175 117620090520: 1177 The sysctl tree for the usb stack has renamed from hw.usb2.* to 1178 hw.usb.* and is now consistent again with previous releases. 1179 118020090520: 1181 802.11 monitor mode support was revised and driver api's were changed. 1182 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead 1183 of DLT_IEEE802_11. No user-visible data structures were changed but 1184 applications that use DLT_IEEE802_11 may require changes. 1185 Bump __FreeBSD_version to 800088. 1186 118720090430: 1188 The layout of the following structs has changed: sysctl_oid, 1189 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet, 1190 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or 1191 panics may be experienced. World rebuild is required for 1192 correctly checking networking state from userland. 1193 Bump __FreeBSD_version to 800085. 1194 119520090429: 1196 MLDv2 and Source-Specific Multicast (SSM) have been merged 1197 to the IPv6 stack. VIMAGE hooks are in but not yet used. 1198 The implementation of SSM within FreeBSD's IPv6 stack closely 1199 follows the IPv4 implementation. 1200 1201 For kernel developers: 1202 1203 * The most important changes are that the ip6_output() and 1204 ip6_input() paths no longer take the IN6_MULTI_LOCK, 1205 and this lock has been downgraded to a non-recursive mutex. 1206 1207 * As with the changes to the IPv4 stack to support SSM, filtering 1208 of inbound multicast traffic must now be performed by transport 1209 protocols within the IPv6 stack. This does not apply to TCP and 1210 SCTP, however, it does apply to UDP in IPv6 and raw IPv6. 1211 1212 * The KPIs used by IPv6 multicast are similar to those used by 1213 the IPv4 stack, with the following differences: 1214 * im6o_mc_filter() is analogous to imo_multicast_filter(). 1215 * The legacy KAME entry points in6_joingroup and in6_leavegroup() 1216 are shimmed to in6_mc_join() and in6_mc_leave() respectively. 1217 * IN6_LOOKUP_MULTI() has been deprecated and removed. 1218 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs 1219 for MLDv1 have an additional 'timer' argument which is used to 1220 jitter the initial membership report for the solicited-node 1221 multicast membership on-link. 1222 * This is not strictly needed for MLDv2, which already jitters 1223 its report transmissions. However, the 'timer' argument is 1224 preserved in case MLDv1 is active on the interface. 1225 1226 * The KAME linked-list based IPv6 membership implementation has 1227 been refactored to use a vector similar to that used by the IPv4 1228 stack. 1229 Code which maintains a list of its own multicast memberships 1230 internally, e.g. carp, has been updated to reflect the new 1231 semantics. 1232 1233 * There is a known Lock Order Reversal (LOR) due to in6_setscope() 1234 acquiring the IF_AFDATA_LOCK and being called within ip6_output(). 1235 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an 1236 implementation constraint which needs to be addressed in HEAD. 1237 1238 For application developers: 1239 1240 * The changes are broadly similar to those made for the IPv4 1241 stack. 1242 1243 * The use of IPv4 and IPv6 multicast socket options on the same 1244 socket, using mapped addresses, HAS NOT been tested or supported. 1245 1246 * There are a number of issues with the implementation of various 1247 IPv6 multicast APIs which need to be resolved in the API surface 1248 before the implementation is fully compatible with KAME userland 1249 use, and these are mostly to do with interface index treatment. 1250 1251 * The literature available discusses the use of either the delta / ASM 1252 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API 1253 using setsourcefilter(3)/getsourcefilter(3). For more information 1254 please refer to RFC 3768, 'Socket Interface Extensions for 1255 Multicast Source Filters'. 1256 1257 * Applications which use the published RFC 3678 APIs should be fine. 1258 1259 For systems administrators: 1260 1261 * The mtest(8) utility has been refactored to support IPv6, in 1262 addition to IPv4. Interface addresses are no longer accepted 1263 as arguments, their names must be used instead. The utility 1264 will map the interface name to its first IPv4 address as 1265 returned by getifaddrs(3). 1266 1267 * The ifmcstat(8) utility has also been updated to print the MLDv2 1268 endpoint state and source filter lists via sysctl(3). 1269 1270 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable 1271 loopback of IPv6 multicast datagrams by default; it defaults to 1 1272 to preserve the existing behaviour. Disabling multicast loopback is 1273 recommended for optimal system performance. 1274 1275 * The IPv6 MROUTING code has been changed to examine this sysctl 1276 instead of attempting to perform a group lookup before looping 1277 back forwarded datagrams. 1278 1279 Bump __FreeBSD_version to 800084. 1280 128120090422: 1282 Implement low-level Bluetooth HCI API. 1283 Bump __FreeBSD_version to 800083. 1284 128520090419: 1286 The layout of struct malloc_type, used by modules to register new 1287 memory allocation types, has changed. Most modules will need to 1288 be rebuilt or panics may be experienced. 1289 Bump __FreeBSD_version to 800081. 1290 129120090415: 1292 Anticipate overflowing inp_flags - add inp_flags2. 1293 This changes most offsets in inpcb, so checking v4 connection 1294 state will require a world rebuild. 1295 Bump __FreeBSD_version to 800080. 1296 129720090415: 1298 Add an llentry to struct route and struct route_in6. Modules 1299 embedding a struct route will need to be recompiled. 1300 Bump __FreeBSD_version to 800079. 1301 130220090414: 1303 The size of rt_metrics_lite and by extension rtentry has changed. 1304 Networking administration apps will need to be recompiled. 1305 The route command now supports show as an alias for get, weighting 1306 of routes, sticky and nostick flags to alter the behavior of stateful 1307 load balancing. 1308 Bump __FreeBSD_version to 800078. 1309 131020090408: 1311 Do not use Giant for kbdmux(4) locking. This is wrong and 1312 apparently causing more problems than it solves. This will 1313 re-open the issue where interrupt handlers may race with 1314 kbdmux(4) in polling mode. Typical symptoms include (but 1315 not limited to) duplicated and/or missing characters when 1316 low level console functions (such as gets) are used while 1317 interrupts are enabled (for example geli password prompt, 1318 mountroot prompt etc.). Disabling kbdmux(4) may help. 1319 132020090407: 1321 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed; 1322 kernel modules referencing any of the above need to be recompiled. 1323 Bump __FreeBSD_version to 800075. 1324 132520090320: 1326 GEOM_PART has become the default partition slicer for storage devices, 1327 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It 1328 introduces some changes: 1329 1330 MSDOS/EBR: the devices created from MSDOS extended partition entries 1331 (EBR) can be named differently than with GEOM_MBR and are now symlinks 1332 to devices with offset-based names. fstabs may need to be modified. 1333 1334 BSD: the "geometry does not match label" warning is harmless in most 1335 cases but it points to problems in file system misalignment with 1336 disk geometry. The "c" partition is now implicit, covers the whole 1337 top-level drive and cannot be (mis)used by users. 1338 1339 General: Kernel dumps are now not allowed to be written to devices 1340 whose partition types indicate they are meant to be used for file 1341 systems (or, in case of MSDOS partitions, as something else than 1342 the "386BSD" type). 1343 1344 Most of these changes date approximately from 200812. 1345 134620090319: 1347 The uscanner(4) driver has been removed from the kernel. This follows 1348 Linux removing theirs in 2.6 and making libusb the default interface 1349 (supported by sane). 1350 135120090319: 1352 The multicast forwarding code has been cleaned up. netstat(1) 1353 only relies on KVM now for printing bandwidth upcall meters. 1354 The IPv4 and IPv6 modules are split into ip_mroute_mod and 1355 ip6_mroute_mod respectively. The config(5) options for statically 1356 compiling this code remain the same, i.e. 'options MROUTING'. 1357 135820090315: 1359 Support for the IFF_NEEDSGIANT network interface flag has been 1360 removed, which means that non-MPSAFE network device drivers are no 1361 longer supported. In particular, if_ar, if_sr, and network device 1362 drivers from the old (legacy) USB stack can no longer be built or 1363 used. 1364 136520090313: 1366 POSIX.1 Native Language Support (NLS) has been enabled in libc and 1367 a bunch of new language catalog files have also been added. 1368 This means that some common libc messages are now localized and 1369 they depend on the LC_MESSAGES environmental variable. 1370 137120090313: 1372 The k8temp(4) driver has been renamed to amdtemp(4) since 1373 support for Family 10 and Family 11 CPU families was added. 1374 137520090309: 1376 IGMPv3 and Source-Specific Multicast (SSM) have been merged 1377 to the IPv4 stack. VIMAGE hooks are in but not yet used. 1378 1379 For kernel developers, the most important changes are that the 1380 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(), 1381 and this lock has been downgraded to a non-recursive mutex. 1382 1383 Transport protocols (UDP, Raw IP) are now responsible for filtering 1384 inbound multicast traffic according to group membership and source 1385 filters. The imo_multicast_filter() KPI exists for this purpose. 1386 Transports which do not use multicast (SCTP, TCP) already reject 1387 multicast by default. Forwarding and receive performance may improve 1388 as a mutex acquisition is no longer needed in the ip_input() 1389 low-level input path. in_addmulti() and in_delmulti() are shimmed 1390 to new KPIs which exist to support SSM in-kernel. 1391 1392 For application developers, it is recommended that loopback of 1393 multicast datagrams be disabled for best performance, as this 1394 will still cause the lock to be taken for each looped-back 1395 datagram transmission. The net.inet.ip.mcast.loop sysctl may 1396 be tuned to 0 to disable loopback by default; it defaults to 1 1397 to preserve the existing behaviour. 1398 1399 For systems administrators, to obtain best performance with 1400 multicast reception and multiple groups, it is always recommended 1401 that a card with a suitably precise hash filter is used. Hash 1402 collisions will still result in the lock being taken within the 1403 transport protocol input path to check group membership. 1404 1405 If deploying FreeBSD in an environment with IGMP snooping switches, 1406 it is recommended that the net.inet.igmp.sendlocal sysctl remain 1407 enabled; this forces 224.0.0.0/24 group membership to be announced 1408 via IGMP. 1409 1410 The size of 'struct igmpstat' has changed; netstat needs to be 1411 recompiled to reflect this. 1412 Bump __FreeBSD_version to 800070. 1413 141420090309: 1415 libusb20.so.1 is now installed as libusb.so.1 and the ports system 1416 updated to use it. This requires a buildworld/installworld in order to 1417 update the library and dependencies (usbconfig, etc). Its advisable to 1418 rebuild all ports which uses libusb. More specific directions are given 1419 in the ports collection UPDATING file. Any /etc/libmap.conf entries for 1420 libusb are no longer required and can be removed. 1421 142220090302: 1423 A workaround is committed to allow the creation of System V shared 1424 memory segment of size > 2 GB on the 64-bit architectures. 1425 Due to a limitation of the existing ABI, the shm_segsz member 1426 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is 1427 wrong for large segments. Note that limits must be explicitly 1428 raised to allow such segments to be created. 1429 143020090301: 1431 The layout of struct ifnet has changed, requiring a rebuild of all 1432 network device driver modules. 1433 143420090227: 1435 The /dev handling for the new USB stack has changed, a 1436 buildworld/installworld is required for libusb20. 1437 143820090223: 1439 The new USB2 stack has now been permanently moved in and all kernel and 1440 module names reverted to their previous values (eg, usb, ehci, ohci, 1441 ums, ...). The old usb stack can be compiled in by prefixing the name 1442 with the letter 'o', the old usb modules have been removed. 1443 Updating entry 20090216 for xorg and 20090215 for libmap may still 1444 apply. 1445 144620090217: 1447 The rc.conf(5) option if_up_delay has been renamed to 1448 defaultroute_delay to better reflect its purpose. If you have 1449 customized this setting in /etc/rc.conf you need to update it to 1450 use the new name. 1451 145220090216: 1453 xorg 7.4 wants to configure its input devices via hald which does not 1454 yet work with USB2. If the keyboard/mouse does not work in xorg then 1455 add 1456 Option "AllowEmptyInput" "off" 1457 to your ServerLayout section. This will cause X to use the configured 1458 kbd and mouse sections from your xorg.conf. 1459 146020090215: 1461 The GENERIC kernels for all architectures now default to the new USB2 1462 stack. No kernel config options or code have been removed so if a 1463 problem arises please report it and optionally revert to the old USB 1464 stack. If you are loading USB kernel modules or have a custom kernel 1465 that includes GENERIC then ensure that usb names are also changed over, 1466 eg uftdi -> usb2_serial_ftdi. 1467 1468 Older programs linked against the ports libusb 0.1 need to be 1469 redirected to the new stack's libusb20. /etc/libmap.conf can 1470 be used for this: 1471 # Map old usb library to new one for usb2 stack 1472 libusb-0.1.so.8 libusb20.so.1 1473 147420090209: 1475 All USB ethernet devices now attach as interfaces under the name ueN 1476 (eg. ue0). This is to provide a predictable name as vendors often 1477 change usb chipsets in a product without notice. 1478 147920090203: 1480 The ichsmb(4) driver has been changed to require SMBus slave 1481 addresses be left-justified (xxxxxxx0b) rather than right-justified. 1482 All of the other SMBus controller drivers require left-justified 1483 slave addresses, so this change makes all the drivers provide the 1484 same interface. 1485 148620090201: 1487 INET6 statistics (struct ip6stat) was updated. 1488 netstat(1) needs to be recompiled. 1489 149020090119: 1491 NTFS has been removed from GENERIC kernel on amd64 to match 1492 GENERIC on i386. Should not cause any issues since mount_ntfs(8) 1493 will load ntfs.ko module automatically when NTFS support is 1494 actually needed, unless ntfs.ko is not installed or security 1495 level prohibits loading kernel modules. If either is the case, 1496 "options NTFS" has to be added into kernel config. 1497 149820090115: 1499 TCP Appropriate Byte Counting (RFC 3465) support added to kernel. 1500 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to 1501 800061. User space tools that rely on the size of struct tcpcb in 1502 tcp_var.h (e.g. sockstat) need to be recompiled. 1503 150420081225: 1505 ng_tty(4) module updated to match the new TTY subsystem. 1506 Due to API change, user-level applications must be updated. 1507 New API support added to mpd5 CVS and expected to be present 1508 in next mpd5.3 release. 1509 151020081219: 1511 With __FreeBSD_version 800060 the makefs tool is part of 1512 the base system (it was a port). 1513 151420081216: 1515 The afdata and ifnet locks have been changed from mutexes to 1516 rwlocks, network modules will need to be re-compiled. 1517 151820081214: 1519 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite. 1520 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated. 1521 The new code reduced struct rtentry{} by 16 bytes on 32-bit 1522 architecture and 40 bytes on 64-bit architecture. The userland 1523 applications "arp" and "ndp" have been updated accordingly. 1524 The output from "netstat -r" shows only routing entries and 1525 none of the L2 information. 1526 152720081130: 1528 __FreeBSD_version 800057 marks the switchover from the 1529 binary ath hal to source code. Users must add the line: 1530 1531 options AH_SUPPORT_AR5416 1532 1533 to their kernel config files when specifying: 1534 1535 device ath_hal 1536 1537 The ath_hal module no longer exists; the code is now compiled 1538 together with the driver in the ath module. It is now 1539 possible to tailor chip support (i.e. reduce the set of chips 1540 and thereby the code size); consult ath_hal(4) for details. 1541 154220081121: 1543 __FreeBSD_version 800054 adds memory barriers to 1544 <machine/atomic.h>, new interfaces to ifnet to facilitate 1545 multiple hardware transmit queues for cards that support 1546 them, and a lock-less ring-buffer implementation to 1547 enable drivers to more efficiently manage queueing of 1548 packets. 1549 155020081117: 1551 A new version of ZFS (version 13) has been merged to -HEAD. 1552 This version has zpool attribute "listsnapshots" off by 1553 default, which means "zfs list" does not show snapshots, 1554 and is the same as Solaris behavior. 1555 155620081028: 1557 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled. 1558 155920081009: 1560 The uhci, ohci, ehci and slhci USB Host controller drivers have 1561 been put into separate modules. If you load the usb module 1562 separately through loader.conf you will need to load the 1563 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0 1564 controller add the following to loader.conf: 1565 1566 uhci_load="YES" 1567 ehci_load="YES" 1568 156920081009: 1570 The ABI used by the PMC toolset has changed. Please keep 1571 userland (libpmc(3)) and the kernel module (hwpmc(4)) in 1572 sync. 1573 157420081009: 1575 atapci kernel module now includes only generic PCI ATA 1576 driver. AHCI driver moved to ataahci kernel module. 1577 All vendor-specific code moved into separate kernel modules: 1578 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek, 1579 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron, 1580 atamarvell, atamicron, atanational, atanetcell, atanvidia, 1581 atapromise, ataserverworks, atasiliconimage, atasis, atavia 1582 158320080820: 1584 The TTY subsystem of the kernel has been replaced by a new 1585 implementation, which provides better scalability and an 1586 improved driver model. Most common drivers have been migrated to 1587 the new TTY subsystem, while others have not. The following 1588 drivers have not yet been ported to the new TTY layer: 1589 1590 PCI/ISA: 1591 cy, digi, rc, rp, sio 1592 1593 USB: 1594 ubser, ucycom 1595 1596 Line disciplines: 1597 ng_h4, ng_tty, ppp, sl, snp 1598 1599 Adding these drivers to your kernel configuration file shall 1600 cause compilation to fail. 1601 160220080818: 1603 ntpd has been upgraded to 4.2.4p5. 1604 160520080801: 1606 OpenSSH has been upgraded to 5.1p1. 1607 1608 For many years, FreeBSD's version of OpenSSH preferred DSA 1609 over RSA for host and user authentication keys. With this 1610 upgrade, we've switched to the vendor's default of RSA over 1611 DSA. This may cause upgraded clients to warn about unknown 1612 host keys even for previously known hosts. Users should 1613 follow the usual procedure for verifying host keys before 1614 accepting the RSA key. 1615 1616 This can be circumvented by setting the "HostKeyAlgorithms" 1617 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh 1618 command line. 1619 1620 Please note that the sequence of keys offered for 1621 authentication has been changed as well. You may want to 1622 specify IdentityFile in a different order to revert this 1623 behavior. 1624 162520080713: 1626 The sio(4) driver has been removed from the i386 and amd64 1627 kernel configuration files. This means uart(4) is now the 1628 default serial port driver on those platforms as well. 1629 1630 To prevent collisions with the sio(4) driver, the uart(4) driver 1631 uses different names for its device nodes. This means the 1632 onboard serial port will now most likely be called "ttyu0" 1633 instead of "ttyd0". You may need to reconfigure applications to 1634 use the new device names. 1635 1636 When using the serial port as a boot console, be sure to update 1637 /boot/device.hints and /etc/ttys before booting the new kernel. 1638 If you forget to do so, you can still manually specify the hints 1639 at the loader prompt: 1640 1641 set hint.uart.0.at="isa" 1642 set hint.uart.0.port="0x3F8" 1643 set hint.uart.0.flags="0x10" 1644 set hint.uart.0.irq="4" 1645 boot -s 1646 164720080609: 1648 The gpt(8) utility has been removed. Use gpart(8) to partition 1649 disks instead. 1650 165120080603: 1652 The version that Linuxulator emulates was changed from 2.4.2 1653 to 2.6.16. If you experience any problems with Linux binaries 1654 please try to set sysctl compat.linux.osrelease to 2.4.2 and 1655 if it fixes the problem contact emulation mailing list. 1656 165720080525: 1658 ISDN4BSD (I4B) was removed from the src tree. You may need to 1659 update a your kernel configuration and remove relevant entries. 1660 166120080509: 1662 I have checked in code to support multiple routing tables. 1663 See the man pages setfib(1) and setfib(2). 1664 This is a hopefully backwards compatible version, 1665 but to make use of it you need to compile your kernel 1666 with options ROUTETABLES=2 (or more up to 16). 1667 166820080420: 1669 The 802.11 wireless support was redone to enable multi-bss 1670 operation on devices that are capable. The underlying device 1671 is no longer used directly but instead wlanX devices are 1672 cloned with ifconfig. This requires changes to rc.conf files. 1673 For example, change: 1674 ifconfig_ath0="WPA DHCP" 1675 to 1676 wlans_ath0=wlan0 1677 ifconfig_wlan0="WPA DHCP" 1678 see rc.conf(5) for more details. In addition, mergemaster of 1679 /etc/rc.d is highly recommended. Simultaneous update of userland 1680 and kernel wouldn't hurt either. 1681 1682 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta 1683 modules were merged into the base wlan module. All references 1684 to these modules (e.g. in kernel config files) must be removed. 1685 168620080408: 1687 psm(4) has gained write(2) support in native operation level. 1688 Arbitrary commands can be written to /dev/psm%d and status can 1689 be read back from it. Therefore, an application is responsible 1690 for status validation and error recovery. It is a no-op in 1691 other operation levels. 1692 169320080312: 1694 Support for KSE threading has been removed from the kernel. To 1695 run legacy applications linked against KSE libmap.conf may 1696 be used. The following libmap.conf may be used to ensure 1697 compatibility with any prior release: 1698 1699 libpthread.so.1 libthr.so.1 1700 libpthread.so.2 libthr.so.2 1701 libkse.so.3 libthr.so.3 1702 170320080301: 1704 The layout of struct vmspace has changed. This affects libkvm 1705 and any executables that link against libkvm and use the 1706 kvm_getprocs() function. In particular, but not exclusively, 1707 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1). 1708 The effects are minimal, but it's advisable to upgrade world 1709 nonetheless. 1710 171120080229: 1712 The latest em driver no longer has support in it for the 1713 82575 adapter, this is now moved to the igb driver. The 1714 split was done to make new features that are incompatible 1715 with older hardware easier to do. 1716 171720080220: 1718 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4), 1719 likewise the kernel option is now GEOM_LINUX_LVM. 1720 172120080211: 1722 The default NFS mount mode has changed from UDP to TCP for 1723 increased reliability. If you rely on (insecurely) NFS 1724 mounting across a firewall you may need to update your 1725 firewall rules. 1726 172720080208: 1728 Belatedly note the addition of m_collapse for compacting 1729 mbuf chains. 1730 173120080126: 1732 The fts(3) structures have been changed to use adequate 1733 integer types for their members and so to be able to cope 1734 with huge file trees. The old fts(3) ABI is preserved 1735 through symbol versioning in libc, so third-party binaries 1736 using fts(3) should still work, although they will not take 1737 advantage of the extended types. At the same time, some 1738 third-party software might fail to build after this change 1739 due to unportable assumptions made in its source code about 1740 fts(3) structure members. Such software should be fixed 1741 by its vendor or, in the worst case, in the ports tree. 1742 FreeBSD_version 800015 marks this change for the unlikely 1743 case that a portable fix is impossible. 1744 174520080123: 1746 To upgrade to -current after this date, you must be running 1747 FreeBSD not older than 6.0-RELEASE. Upgrading to -current 1748 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems. 1749 175020071128: 1751 The ADAPTIVE_GIANT kernel option has been retired because its 1752 functionality is the default now. 1753 175420071118: 1755 The AT keyboard emulation of sunkbd(4) has been turned on 1756 by default. In order to make the special symbols of the Sun 1757 keyboards driven by sunkbd(4) work under X these now have 1758 to be configured the same way as Sun USB keyboards driven 1759 by ukbd(4) (which also does AT keyboard emulation), f.e.: 1760 1761 Option "XkbLayout" "us" 1762 Option "XkbRules" "xorg" 1763 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us" 1764 176520071024: 1766 It has been decided that it is desirable to provide ABI 1767 backwards compatibility to the FreeBSD 4/5/6 versions of the 1768 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was 1769 broken with the introduction of PCI domain support (see the 1770 20070930 entry). Unfortunately, this required the ABI of 1771 PCIOCGETCONF to be broken again in order to be able to 1772 provide backwards compatibility to the old version of that 1773 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled 1774 again. As for prominent ports this affects neither pciutils 1775 nor xorg-server this time, the hal port needs to be rebuilt 1776 however. 1777 177820071020: 1779 The misnamed kthread_create() and friends have been renamed 1780 to kproc_create() etc. Many of the callers already 1781 used kproc_start().. 1782 I will return kthread_create() and friends in a while 1783 with implementations that actually create threads, not procs. 1784 Renaming corresponds with version 800002. 1785 178620071010: 1787 RELENG_7 branched. 1788 1789COMMON ITEMS: 1790 1791 General Notes 1792 ------------- 1793 Avoid using make -j when upgrading. While generally safe, there are 1794 sometimes problems using -j to upgrade. If your upgrade fails with 1795 -j, please try again without -j. From time to time in the past there 1796 have been problems using -j with buildworld and/or installworld. This 1797 is especially true when upgrading between "distant" versions (eg one 1798 that cross a major release boundary or several minor releases, or when 1799 several months have passed on the -current branch). 1800 1801 Sometimes, obscure build problems are the result of environment 1802 poisoning. This can happen because the make utility reads its 1803 environment when searching for values for global variables. To run 1804 your build attempts in an "environmental clean room", prefix all make 1805 commands with 'env -i '. See the env(1) manual page for more details. 1806 1807 When upgrading from one major version to another it is generally best 1808 to upgrade to the latest code in the currently installed branch first, 1809 then do an upgrade to the new branch. This is the best-tested upgrade 1810 path, and has the highest probability of being successful. Please try 1811 this approach before reporting problems with a major version upgrade. 1812 1813 When upgrading a live system, having a root shell around before 1814 installing anything can help undo problems. Not having a root shell 1815 around can lead to problems if pam has changed too much from your 1816 starting point to allow continued authentication after the upgrade. 1817 1818 ZFS notes 1819 --------- 1820 When upgrading the boot ZFS pool to a new version, always follow 1821 these two steps: 1822 1823 1.) recompile and reinstall the ZFS boot loader and boot block 1824 (this is part of "make buildworld" and "make installworld") 1825 1826 2.) update the ZFS boot block on your boot drive 1827 1828 The following example updates the ZFS boot block on the first 1829 partition (freebsd-boot) of a GPT partitioned drive ad0: 1830 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0" 1831 1832 Non-boot pools do not need these updates. 1833 1834 To build a kernel 1835 ----------------- 1836 If you are updating from a prior version of FreeBSD (even one just 1837 a few days old), you should follow this procedure. It is the most 1838 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld, 1839 1840 make kernel-toolchain 1841 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE 1842 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE 1843 1844 To test a kernel once 1845 --------------------- 1846 If you just want to boot a kernel once (because you are not sure 1847 if it works, or if you want to boot a known bad kernel to provide 1848 debugging information) run 1849 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel 1850 nextboot -k testkernel 1851 1852 To just build a kernel when you know that it won't mess you up 1853 -------------------------------------------------------------- 1854 This assumes you are already running a CURRENT system. Replace 1855 ${arch} with the architecture of your machine (e.g. "i386", 1856 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc). 1857 1858 cd src/sys/${arch}/conf 1859 config KERNEL_NAME_HERE 1860 cd ../compile/KERNEL_NAME_HERE 1861 make depend 1862 make 1863 make install 1864 1865 If this fails, go to the "To build a kernel" section. 1866 1867 To rebuild everything and install it on the current system. 1868 ----------------------------------------------------------- 1869 # Note: sometimes if you are running current you gotta do more than 1870 # is listed here if you are upgrading from a really old current. 1871 1872 <make sure you have good level 0 dumps> 1873 make buildworld 1874 make kernel KERNCONF=YOUR_KERNEL_HERE 1875 [1] 1876 <reboot in single user> [3] 1877 mergemaster -p [5] 1878 make installworld 1879 mergemaster -i [4] 1880 make delete-old [6] 1881 <reboot> 1882 1883 To cross-install current onto a separate partition 1884 -------------------------------------------------- 1885 # In this approach we use a separate partition to hold 1886 # current's root, 'usr', and 'var' directories. A partition 1887 # holding "/", "/usr" and "/var" should be about 2GB in 1888 # size. 1889 1890 <make sure you have good level 0 dumps> 1891 <boot into -stable> 1892 make buildworld 1893 make buildkernel KERNCONF=YOUR_KERNEL_HERE 1894 <maybe newfs current's root partition> 1895 <mount current's root partition on directory ${CURRENT_ROOT}> 1896 make installworld DESTDIR=${CURRENT_ROOT} 1897 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd 1898 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT} 1899 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd 1900 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition> 1901 <reboot into current> 1902 <do a "native" rebuild/install as described in the previous section> 1903 <maybe install compatibility libraries from ports/misc/compat*> 1904 <reboot> 1905 1906 1907 To upgrade in-place from stable to current 1908 ---------------------------------------------- 1909 <make sure you have good level 0 dumps> 1910 make buildworld [9] 1911 make kernel KERNCONF=YOUR_KERNEL_HERE [8] 1912 [1] 1913 <reboot in single user> [3] 1914 mergemaster -p [5] 1915 make installworld 1916 mergemaster -i [4] 1917 make delete-old [6] 1918 <reboot> 1919 1920 Make sure that you've read the UPDATING file to understand the 1921 tweaks to various things you need. At this point in the life 1922 cycle of current, things change often and you are on your own 1923 to cope. The defaults can also change, so please read ALL of 1924 the UPDATING entries. 1925 1926 Also, if you are tracking -current, you must be subscribed to 1927 freebsd-current@freebsd.org. Make sure that before you update 1928 your sources that you have read and understood all the recent 1929 messages there. If in doubt, please track -stable which has 1930 much fewer pitfalls. 1931 1932 [1] If you have third party modules, such as vmware, you 1933 should disable them at this point so they don't crash your 1934 system on reboot. 1935 1936 [3] From the bootblocks, boot -s, and then do 1937 fsck -p 1938 mount -u / 1939 mount -a 1940 cd src 1941 adjkerntz -i # if CMOS is wall time 1942 Also, when doing a major release upgrade, it is required that 1943 you boot into single user mode to do the installworld. 1944 1945 [4] Note: This step is non-optional. Failure to do this step 1946 can result in a significant reduction in the functionality of the 1947 system. Attempting to do it by hand is not recommended and those 1948 that pursue this avenue should read this file carefully, as well 1949 as the archives of freebsd-current and freebsd-hackers mailing lists 1950 for potential gotchas. The -U option is also useful to consider. 1951 See mergemaster(8) for more information. 1952 1953 [5] Usually this step is a noop. However, from time to time 1954 you may need to do this if you get unknown user in the following 1955 step. It never hurts to do it all the time. You may need to 1956 install a new mergemaster (cd src/usr.sbin/mergemaster && make 1957 install) after the buildworld before this step if you last updated 1958 from current before 20130425 or from -stable before 20130430. 1959 1960 [6] This only deletes old files and directories. Old libraries 1961 can be deleted by "make delete-old-libs", but you have to make 1962 sure that no program is using those libraries anymore. 1963 1964 [8] In order to have a kernel that can run the 4.x binaries needed to 1965 do an installworld, you must include the COMPAT_FREEBSD4 option in 1966 your kernel. Failure to do so may leave you with a system that is 1967 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is 1968 required to run the 5.x binaries on more recent kernels. And so on 1969 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7. 1970 1971 Make sure that you merge any new devices from GENERIC since the 1972 last time you updated your kernel config file. 1973 1974 [9] When checking out sources, you must include the -P flag to have 1975 cvs prune empty directories. 1976 1977 If CPUTYPE is defined in your /etc/make.conf, make sure to use the 1978 "?=" instead of the "=" assignment operator, so that buildworld can 1979 override the CPUTYPE if it needs to. 1980 1981 MAKEOBJDIRPREFIX must be defined in an environment variable, and 1982 not on the command line, or in /etc/make.conf. buildworld will 1983 warn if it is improperly defined. 1984FORMAT: 1985 1986This file contains a list, in reverse chronological order, of major 1987breakages in tracking -current. It is not guaranteed to be a complete 1988list of such breakages, and only contains entries since October 10, 2007. 1989If you need to see UPDATING entries from before that date, you will need 1990to fetch an UPDATING file from an older FreeBSD release. 1991 1992Copyright information: 1993 1994Copyright 1998-2009 M. Warner Losh. All Rights Reserved. 1995 1996Redistribution, publication, translation and use, with or without 1997modification, in full or in part, in any form or format of this 1998document are permitted without further permission from the author. 1999 2000THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR 2001IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 2002WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 2003DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT, 2004INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 2005(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 2006SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2007HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 2008STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 2009IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 2010POSSIBILITY OF SUCH DAMAGE. 2011 2012Contact Warner Losh if you have any questions about your use of 2013this document. 2014 2015$FreeBSD: head/UPDATING 255624 2013-09-17 04:24:34Z gjb $ 2016