UPDATING revision 258714
1Updating Information for FreeBSD current users 2 3This file is maintained and copyrighted by M. Warner Losh <imp@freebsd.org>. 4See end of file for further details. For commonly done items, please see the 5COMMON ITEMS: section later in the file. These instructions assume that you 6basically know what you are doing. If not, then please consult the FreeBSD 7handbook: 8 9 http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html 10 11Items affecting the ports and packages system can be found in 12/usr/ports/UPDATING. Please read that file before running portupgrade. 13 14NOTE: FreeBSD has switched from gcc to clang. If you have trouble bootstrapping 15from older versions of FreeBSD, try WITHOUT_CLANG to bootstrap to the tip of 16head, and then rebuild without this option. The bootstrap process from 17older version of current is a bit fragile. 18 19NOTE TO PEOPLE WHO THINK THAT FreeBSD 11.x IS SLOW: 20 FreeBSD 11.x has many debugging features turned on, in both the kernel 21 and userland. These features attempt to detect incorrect use of 22 system primitives, and encourage loud failure through extra sanity 23 checking and fail stop semantics. They also substantially impact 24 system performance. If you want to do performance measurement, 25 benchmarking, and optimization, you'll want to turn them off. This 26 includes various WITNESS- related kernel options, INVARIANTS, malloc 27 debugging flags in userland, and various verbose features in the 28 kernel. Many developers choose to disable these features on build 29 machines to maximize performance. (To completely disable malloc 30 debugging, define MALLOC_PRODUCTION in /etc/make.conf, or to merely 31 disable the most expensive debugging functionality run 32 "ln -s 'abort:false,junk:false' /etc/malloc.conf".) 33 3420131108: 35 The WITHOUT_ATF build knob has been removed and its functionality 36 has been subsumed into the more generic WITHOUT_TESTS. If you were 37 using the former to disable the build of the ATF libraries, you 38 should change your settings to use the latter. 39 4020131025: 41 The default version of mtree is nmtree which is obtained from 42 NetBSD. The output is generally the same, but may vary 43 slightly. If you found you need identical output adding 44 "-F freebsd9" to the command line should do the trick. For the 45 time being, the old mtree is available as fmtree. 46 4720131014: 48 libbsdyml has been renamed to libyaml and moved to /usr/lib/private. 49 This will break ports-mgmt/pkg. Rebuild the port, or upgrade to pkg 50 1.1.4_8 and verify bsdyml not linked in, before running "make 51 delete-old-libs": 52 # make -C /usr/ports/ports-mgmt/pkg build deinstall install clean 53 or 54 # pkg install pkg; ldd /usr/local/sbin/pkg | grep bsdyml 55 5620131010: 57 The rc.d/jail script has been updated to support jail(8) 58 configuration file. The "jail_<jname>_*" rc.conf(5) variables 59 for per-jail configuration are automatically converted to 60 /var/run/jail.<jname>.conf before the jail(8) utility is invoked. 61 This is transparently backward compatible. See below about some 62 incompatibilities and rc.conf(5) manual page for more details. 63 64 These variables are now deprecated in favor of jail(8) configuration 65 file. One can use "rc.d/jail config <jname>" command to generate 66 a jail(8) configuration file in /var/run/jail.<jname>.conf without 67 running the jail(8) utility. The default pathname of the 68 configuration file is /etc/jail.conf and can be specified by 69 using $jail_conf or $jail_<jname>_conf variables. 70 71 Please note that jail_devfs_ruleset accepts an integer at 72 this moment. Please consider to rewrite the ruleset name 73 with an integer. 74 7520130930: 76 BIND has been removed from the base system. If all you need 77 is a local resolver, simply enable and start the local_unbound 78 service instead. Otherwise, several versions of BIND are 79 available in the ports tree. The dns/bind99 port is one example. 80 81 With this change, nslookup(1) and dig(1) are no longer in the base 82 system. Users should instead use host(1) which is still 83 in the base system. Alternatively, nslookup and dig can 84 be obtained by installing the dns/bind-tools port. 85 8620130916: 87 With the addition of unbound(8), a new unbound user is now 88 required during installworld. "mergemaster -p" can be used to 89 add the user prior to installworld, as documented in the handbook. 90 9120130911: 92 OpenSSH is now built with DNSSEC support, and will by default 93 silently trust signed SSHFP records. This can be controlled with 94 the VerifyHostKeyDNS client configuration setting. DNSSEC support 95 can be disabled entirely with the WITHOUT_LDNS option in src.conf. 96 9720130906: 98 The GNU Compiler Collection and C++ standard library (libstdc++) 99 are no longer built by default on platforms where clang is the system 100 compiler. You can enable them with the WITH_GCC and WITH_GNUCXX 101 options in src.conf. 102 10320130905: 104 The PROCDESC kernel option is now part of the GENERIC kernel 105 configuration and is required for the rwhod(8) to work. 106 If you are using custom kernel configuration, you should include 107 'options PROCDESC'. 108 10920130905: 110 The API and ABI related to the Capsicum framework was modified 111 in backward incompatible way. The userland libraries and programs 112 have to be recompiled to work with the new kernel. This includes the 113 following libraries and programs, but the whole buildworld is 114 advised: libc, libprocstat, dhclient, tcpdump, hastd, hastctl, 115 kdump, procstat, rwho, rwhod, uniq. 116 11720130903: 118 AES-NI intrinsic support has been added to gcc. The AES-NI module 119 has been updated to use this support. A new gcc is required to build 120 the aesni module on both i386 and amd64. 121 12220130821: 123 The PADLOCK_RNG and RDRAND_RNG kernel options are now devices. 124 Thus "device padlock_rng" and "device rdrand_rng" should be 125 used instead of "options PADLOCK_RNG" & "options RDRAND_RNG". 126 12720130813: 128 WITH_ICONV has been split into two feature sets. WITH_ICONV now 129 enables just the iconv* functionality and is now on by default. 130 WITH_LIBICONV_COMPAT enables the libiconv api and link time 131 compatability. Set WITHOUT_ICONV to build the old way. 132 If you have been using WITH_ICONV before, you will very likely 133 need to turn on WITH_LIBICONV_COMPAT. 134 13520130806: 136 INVARIANTS option now enables DEBUG for code with OpenSolaris and 137 Illumos origin, including ZFS. If you have INVARIANTS in your 138 kernel configuration, then there is no need to set DEBUG or ZFS_DEBUG 139 explicitly. 140 DEBUG used to enable witness(9) tracking of OpenSolaris (mostly ZFS) 141 locks if WITNESS option was set. Because that generated a lot of 142 witness(9) reports and all of them were believed to be false 143 positives, this is no longer done. New option OPENSOLARIS_WITNESS 144 can be used to achieve the previous behavior. 145 14620130806: 147 Timer values in IPv6 data structures now use time_uptime instead 148 of time_second. Although this is not a user-visible functional 149 change, userland utilities which directly use them---ndp(8), 150 rtadvd(8), and rtsold(8) in the base system---need to be updated 151 to r253970 or later. 152 15320130802: 154 find -delete can now delete the pathnames given as arguments, 155 instead of only files found below them or if the pathname did 156 not contain any slashes. Formerly, the following error message 157 would result: 158 159 find: -delete: <path>: relative path potentially not safe 160 161 Deleting the pathnames given as arguments can be prevented 162 without error messages using -mindepth 1 or by changing 163 directory and passing "." as argument to find. This works in the 164 old as well as the new version of find. 165 16620130726: 167 Behavior of devfs rules path matching has been changed. 168 Pattern is now always matched against fully qualified devfs 169 path and slash characters must be explicitly matched by 170 slashes in pattern (FNM_PATHNAME). Rulesets involving devfs 171 subdirectories must be reviewed. 172 17320130716: 174 The default ARM ABI has changed to the ARM EABI. The old ABI is 175 incompatible with the ARM EABI and all programs and modules will 176 need to be rebuilt to work with a new kernel. 177 178 To keep using the old ABI ensure the WITHOUT_ARM_EABI knob is set. 179 180 NOTE: Support for the old ABI will be removed in the future and 181 users are advised to upgrade. 182 18320130709: 184 pkg_install has been disconnected from the build if you really need it 185 you should add WITH_PKGTOOLS in your src.conf(5). 186 18720130709: 188 Most of network statistics structures were changed to be able 189 keep 64-bits counters. Thus all tools, that work with networking 190 statistics, must be rebuilt (netstat(1), bsnmpd(1), etc.) 191 19220130629: 193 Fix targets that run multiple make's to use && rather than ; 194 so that subsequent steps depend on success of previous. 195 196 NOTE: if building 'universe' with -j* on stable/8 or stable/9 197 it would be better to start the build using bmake, to avoid 198 overloading the machine. 199 20020130618: 201 Fix a bug that allowed a tracing process (e.g. gdb) to write 202 to a memory-mapped file in the traced process's address space 203 even if neither the traced process nor the tracing process had 204 write access to that file. 205 20620130615: 207 CVS has been removed from the base system. An exact copy 208 of the code is available from the devel/cvs port. 209 21020130613: 211 Some people report the following error after the switch to bmake: 212 213 make: illegal option -- J 214 usage: make [-BPSXeiknpqrstv] [-C directory] [-D variable] 215 ... 216 *** [buildworld] Error code 2 217 218 this likely due to an old instance of make in 219 ${MAKEPATH} (${MAKEOBJDIRPREFIX}${.CURDIR}/make.${MACHINE}) 220 which src/Makefile will use that blindly, if it exists, so if 221 you see the above error: 222 223 rm -rf `make -V MAKEPATH` 224 225 should resolve it. 226 22720130516: 228 Use bmake by default. 229 Whereas before one could choose to build with bmake via 230 -DWITH_BMAKE one must now use -DWITHOUT_BMAKE to use the old 231 make. The goal is to remove these knobs for 10-RELEASE. 232 233 It is worth noting that bmake (like gmake) treats the command 234 line as the unit of failure, rather than statements within the 235 command line. Thus '(cd some/where && dosomething)' is safer 236 than 'cd some/where; dosomething'. The '()' allows consistent 237 behavior in parallel build. 238 23920130429: 240 Fix a bug that allows NFS clients to issue READDIR on files. 241 24220130426: 243 The WITHOUT_IDEA option has been removed because 244 the IDEA patent expired. 245 24620130426: 247 The sysctl which controls TRIM support under ZFS has been renamed 248 from vfs.zfs.trim_disable -> vfs.zfs.trim.enabled and has been 249 enabled by default. 250 25120130425: 252 The mergemaster command now uses the default MAKEOBJDIRPREFIX 253 rather than creating it's own in the temporary directory in 254 order allow access to bootstrapped versions of tools such as 255 install and mtree. When upgrading from version of FreeBSD where 256 the install command does not support -l, you will need to 257 install a new mergemaster command if mergemaster -p is required. 258 This can be accomplished with the command (cd src/usr.sbin/mergemaster 259 && make install). 260 26120130404: 262 Legacy ATA stack, disabled and replaced by new CAM-based one since 263 FreeBSD 9.0, completely removed from the sources. Kernel modules 264 atadisk and atapi*, user-level tools atacontrol and burncd are 265 removed. Kernel option `options ATA_CAM` is now permanently enabled 266 and removed. 267 26820130319: 269 SOCK_CLOEXEC and SOCK_NONBLOCK flags have been added to socket(2) 270 and socketpair(2). Software, in particular Kerberos, may 271 automatically detect and use these during building. The resulting 272 binaries will not work on older kernels. 273 27420130308: 275 CTL_DISABLE has also been added to the sparc64 GENERIC (for further 276 information, see the respective 20130304 entry). 277 27820130304: 279 Recent commits to callout(9) changed the size of struct callout, 280 so the KBI is probably heavily disturbed. Also, some functions 281 in callout(9)/sleep(9)/sleepqueue(9)/condvar(9) KPIs were replaced 282 by macros. Every kernel module using it won't load, so rebuild 283 is requested. 284 285 The ctl device has been re-enabled in GENERIC for i386 and amd64, 286 but does not initialize by default (because of the new CTL_DISABLE 287 option) to save memory. To re-enable it, remove the CTL_DISABLE 288 option from the kernel config file or set kern.cam.ctl.disable=0 289 in /boot/loader.conf. 290 29120130301: 292 The ctl device has been disabled in GENERIC for i386 and amd64. 293 This was done due to the extra memory being allocated at system 294 initialisation time by the ctl driver which was only used if 295 a CAM target device was created. This makes a FreeBSD system 296 unusable on 128MB or less of RAM. 297 29820130208: 299 A new compression method (lz4) has been merged to -HEAD. Please 300 refer to zpool-features(7) for more information. 301 302 Please refer to the "ZFS notes" section of this file for information 303 on upgrading boot ZFS pools. 304 30520130129: 306 A BSD-licensed patch(1) variant has been added and is installed 307 as bsdpatch, being the GNU version the default patch. 308 To inverse the logic and use the BSD-licensed one as default, 309 while having the GNU version installed as gnupatch, rebuild 310 and install world with the WITH_BSD_PATCH knob set. 311 31220130121: 313 Due to the use of the new -l option to install(1) during build 314 and install, you must take care not to directly set the INSTALL 315 make variable in your /etc/make.conf, /etc/src.conf, or on the 316 command line. If you wish to use the -C flag for all installs 317 you may be able to add INSTALL+=-C to /etc/make.conf or 318 /etc/src.conf. 319 32020130118: 321 The install(1) option -M has changed meaning and now takes an 322 argument that is a file or path to append logs to. In the 323 unlikely event that -M was the last option on the command line 324 and the command line contained at least two files and a target 325 directory the first file will have logs appended to it. The -M 326 option served little practical purpose in the last decade so its 327 use is expected to be extremely rare. 328 32920121223: 330 After switching to Clang as the default compiler some users of ZFS 331 on i386 systems started to experience stack overflow kernel panics. 332 Please consider using 'options KSTACK_PAGES=4' in such configurations. 333 33420121222: 335 GEOM_LABEL now mangles label names read from file system metadata. 336 Mangling affect labels containing spaces, non-printable characters, 337 '%' or '"'. Device names in /etc/fstab and other places may need to 338 be updated. 339 34020121217: 341 By default, only the 10 most recent kernel dumps will be saved. To 342 restore the previous behaviour (no limit on the number of kernel dumps 343 stored in the dump directory) add the following line to /etc/rc.conf: 344 345 savecore_flags="" 346 34720121201: 348 With the addition of auditdistd(8), a new auditdistd user is now 349 required during installworld. "mergemaster -p" can be used to 350 add the user prior to installworld, as documented in the handbook. 351 35220121117: 353 The sin6_scope_id member variable in struct sockaddr_in6 is now 354 filled by the kernel before passing the structure to the userland via 355 sysctl or routing socket. This means the KAME-specific embedded scope 356 id in sin6_addr.s6_addr[2] is always cleared in userland application. 357 This behavior can be controlled by net.inet6.ip6.deembed_scopeid. 358 __FreeBSD_version is bumped to 1000025. 359 36020121105: 361 On i386 and amd64 systems WITH_CLANG_IS_CC is now the default. 362 This means that the world and kernel will be compiled with clang 363 and that clang will be installed as /usr/bin/cc, /usr/bin/c++, 364 and /usr/bin/cpp. To disable this behavior and revert to building 365 with gcc, compile with WITHOUT_CLANG_IS_CC. Really old versions 366 of current may need to bootstrap WITHOUT_CLANG first if the clang 367 build fails (its compatibility window doesn't extend to the 9 stable 368 branch point). 369 37020121102: 371 The IPFIREWALL_FORWARD kernel option has been removed. Its 372 functionality now turned on by default. 373 37420121023: 375 The ZERO_COPY_SOCKET kernel option has been removed and 376 split into SOCKET_SEND_COW and SOCKET_RECV_PFLIP. 377 NB: SOCKET_SEND_COW uses the VM page based copy-on-write 378 mechanism which is not safe and may result in kernel crashes. 379 NB: The SOCKET_RECV_PFLIP mechanism is useless as no current 380 driver supports disposeable external page sized mbuf storage. 381 Proper replacements for both zero-copy mechanisms are under 382 consideration and will eventually lead to complete removal 383 of the two kernel options. 384 38520121023: 386 The IPv4 network stack has been converted to network byte 387 order. The following modules need to be recompiled together 388 with kernel: carp(4), divert(4), gif(4), siftr(4), gre(4), 389 pf(4), ipfw(4), ng_ipfw(4), stf(4). 390 39120121022: 392 Support for non-MPSAFE filesystems was removed from VFS. The 393 VFS_VERSION was bumped, all filesystem modules shall be 394 recompiled. 395 39620121018: 397 All the non-MPSAFE filesystems have been disconnected from 398 the build. The full list includes: codafs, hpfs, ntfs, nwfs, 399 portalfs, smbfs, xfs. 400 40120121016: 402 The interface cloning API and ABI has changed. The following 403 modules need to be recompiled together with kernel: 404 ipfw(4), pfsync(4), pflog(4), usb(4), wlan(4), stf(4), 405 vlan(4), disc(4), edsc(4), if_bridge(4), gif(4), tap(4), 406 faith(4), epair(4), enc(4), tun(4), if_lagg(4), gre(4). 407 40820121015: 409 The sdhci driver was split in two parts: sdhci (generic SD Host 410 Controller logic) and sdhci_pci (actual hardware driver). 411 No kernel config modifications are required, but if you 412 load sdhc as a module you must switch to sdhci_pci instead. 413 41420121014: 415 Import the FUSE kernel and userland support into base system. 416 41720121013: 418 The GNU sort(1) program has been removed since the BSD-licensed 419 sort(1) has been the default for quite some time and no serious 420 problems have been reported. The corresponding WITH_GNU_SORT 421 knob has also gone. 422 42320121006: 424 The pfil(9) API/ABI for AF_INET family has been changed. Packet 425 filtering modules: pf(4), ipfw(4), ipfilter(4) need to be recompiled 426 with new kernel. 427 42820121001: 429 The net80211(4) ABI has been changed to allow for improved driver 430 PS-POLL and power-save support. All wireless drivers need to be 431 recompiled to work with the new kernel. 432 43320120913: 434 The random(4) support for the VIA hardware random number 435 generator (`PADLOCK') is no longer enabled unconditionally. 436 Add the padlock_rng device in the custom kernel config if 437 needed. The GENERIC kernels on i386 and amd64 do include the 438 device, so the change only affects the custom kernel 439 configurations. 440 44120120908: 442 The pf(4) packet filter ABI has been changed. pfctl(8) and 443 snmp_pf module need to be recompiled to work with new kernel. 444 44520120828: 446 A new ZFS feature flag "com.delphix:empty_bpobj" has been merged 447 to -HEAD. Pools that have empty_bpobj in active state can not be 448 imported read-write with ZFS implementations that do not support 449 this feature. For more information read the zpool-features(5) 450 manual page. 451 45220120727: 453 The sparc64 ZFS loader has been changed to no longer try to auto- 454 detect ZFS providers based on diskN aliases but now requires these 455 to be explicitly listed in the OFW boot-device environment variable. 456 45720120712: 458 The OpenSSL has been upgraded to 1.0.1c. Any binaries requiring 459 libcrypto.so.6 or libssl.so.6 must be recompiled. Also, there are 460 configuration changes. Make sure to merge /etc/ssl/openssl.cnf. 461 46220120712: 463 The following sysctls and tunables have been renamed for consistency 464 with other variables: 465 kern.cam.da.da_send_ordered -> kern.cam.da.send_ordered 466 kern.cam.ada.ada_send_ordered -> kern.cam.ada.send_ordered 467 46820120628: 469 The sort utility has been replaced with BSD sort. For now, GNU sort 470 is also available as "gnusort" or the default can be set back to 471 GNU sort by setting WITH_GNU_SORT. In this case, BSD sort will be 472 installed as "bsdsort". 473 47420120611: 475 A new version of ZFS (pool version 5000) has been merged to -HEAD. 476 Starting with this version the old system of ZFS pool versioning 477 is superseded by "feature flags". This concept enables forward 478 compatibility against certain future changes in functionality of ZFS 479 pools. The first read-only compatible "feature flag" for ZFS pools 480 is named "com.delphix:async_destroy". For more information 481 read the new zpool-features(5) manual page. 482 Please refer to the "ZFS notes" section of this file for information 483 on upgrading boot ZFS pools. 484 48520120417: 486 The malloc(3) implementation embedded in libc now uses sources imported 487 as contrib/jemalloc. The most disruptive API change is to 488 /etc/malloc.conf. If your system has an old-style /etc/malloc.conf, 489 delete it prior to installworld, and optionally re-create it using the 490 new format after rebooting. See malloc.conf(5) for details 491 (specifically the TUNING section and the "opt.*" entries in the MALLCTL 492 NAMESPACE section). 493 49420120328: 495 Big-endian MIPS TARGET_ARCH values no longer end in "eb". mips64eb 496 is now spelled mips64. mipsn32eb is now spelled mipsn32. mipseb is 497 now spelled mips. This is to aid compatibility with third-party 498 software that expects this naming scheme in uname(3). Little-endian 499 settings are unchanged. If you are updating a big-endian mips64 machine 500 from before this change, you may need to set MACHINE_ARCH=mips64 in 501 your environment before the new build system will recognize your machine. 502 50320120306: 504 Disable by default the option VFS_ALLOW_NONMPSAFE for all supported 505 platforms. 506 50720120229: 508 Now unix domain sockets behave "as expected" on nullfs(5). Previously 509 nullfs(5) did not pass through all behaviours to the underlying layer, 510 as a result if we bound to a socket on the lower layer we could connect 511 only to the lower path; if we bound to the upper layer we could connect 512 only to the upper path. The new behavior is one can connect to both the 513 lower and the upper paths regardless what layer path one binds to. 514 51520120211: 516 The getifaddrs upgrade path broken with 20111215 has been restored. 517 If you have upgraded in between 20111215 and 20120209 you need to 518 recompile libc again with your kernel. You still need to recompile 519 world to be able to configure CARP but this restriction already 520 comes from 20111215. 521 52220120114: 523 The set_rcvar() function has been removed from /etc/rc.subr. All 524 base and ports rc.d scripts have been updated, so if you have a 525 port installed with a script in /usr/local/etc/rc.d you can either 526 hand-edit the rcvar= line, or reinstall the port. 527 528 An easy way to handle the mass-update of /etc/rc.d: 529 rm /etc/rc.d/* && mergemaster -i 530 53120120109: 532 panic(9) now stops other CPUs in the SMP systems, disables interrupts 533 on the current CPU and prevents other threads from running. 534 This behavior can be reverted using the kern.stop_scheduler_on_panic 535 tunable/sysctl. 536 The new behavior can be incompatible with kern.sync_on_panic. 537 53820111215: 539 The carp(4) facility has been changed significantly. Configuration 540 of the CARP protocol via ifconfig(8) has changed, as well as format 541 of CARP events submitted to devd(8) has changed. See manual pages 542 for more information. The arpbalance feature of carp(4) is currently 543 not supported anymore. 544 545 Size of struct in_aliasreq, struct in6_aliasreq has changed. User 546 utilities using SIOCAIFADDR, SIOCAIFADDR_IN6, e.g. ifconfig(8), 547 need to be recompiled. 548 54920111122: 550 The acpi_wmi(4) status device /dev/wmistat has been renamed to 551 /dev/wmistat0. 552 55320111108: 554 The option VFS_ALLOW_NONMPSAFE option has been added in order to 555 explicitely support non-MPSAFE filesystems. 556 It is on by default for all supported platform at this present 557 time. 558 55920111101: 560 The broken amd(4) driver has been replaced with esp(4) in the amd64, 561 i386 and pc98 GENERIC kernel configuration files. 562 56320110930: 564 sysinstall has been removed 565 56620110923: 567 The stable/9 branch created in subversion. This corresponds to the 568 RELENG_9 branch in CVS. 569 57020110913: 571 This commit modifies vfs_register() so that it uses a hash 572 calculation to set vfc_typenum, which is enabled by default. 573 The first time a system is booted after this change, the 574 vfc_typenum values will change for all file systems. The 575 main effect of this is a change to the NFS server file handles 576 for file systems that use vfc_typenum in their fsid, such as ZFS. 577 It will, however, prevent vfc_typenum from changing when file 578 systems are loaded in a different order for subsequent reboots. 579 To disable this, you can set vfs.typenumhash=0 in /boot/loader.conf 580 until you are ready to remount all NFS clients after a reboot. 581 58220110828: 583 Bump the shared library version numbers for libraries that 584 do not use symbol versioning, have changed the ABI compared 585 to stable/8 and which shared library version was not bumped. 586 Done as part of 9.0-RELEASE cycle. 587 58820110815: 589 During the merge of Capsicum features, the fget(9) KPI was modified. 590 This may require the rebuilding of out-of-tree device drivers -- 591 issues have been reported specifically with the nVidia device driver. 592 __FreeBSD_version is bumped to 900041. 593 594 Also, there is a period between 20110811 and 20110814 where the 595 special devices /dev/{stdin,stdout,stderr} did not work correctly. 596 Building world from a kernel during that window may not work. 597 59820110628: 599 The packet filter (pf) code has been updated to OpenBSD 4.5. 600 You need to update userland tools to be in sync with kernel. 601 This update breaks backward compatibility with earlier pfsync(4) 602 versions. Care must be taken when updating redundant firewall setups. 603 60420110608: 605 The following sysctls and tunables are retired on x86 platforms: 606 machdep.hlt_cpus 607 machdep.hlt_logical_cpus 608 The following sysctl is retired: 609 machdep.hyperthreading_allowed 610 The sysctls were supposed to provide a way to dynamically offline and 611 online selected CPUs on x86 platforms, but the implementation has not 612 been reliable especially with SCHED_ULE scheduler. 613 machdep.hyperthreading_allowed tunable is still available to ignore 614 hyperthreading CPUs at OS level. 615 Individual CPUs can be disabled using hint.lapic.X.disabled tunable, 616 where X is an APIC ID of a CPU. Be advised, though, that disabling 617 CPUs in non-uniform fashion will result in non-uniform topology and 618 may lead to sub-optimal system performance with SCHED_ULE, which is 619 a default scheduler. 620 62120110607: 622 cpumask_t type is retired and cpuset_t is used in order to describe 623 a mask of CPUs. 624 62520110531: 626 Changes to ifconfig(8) for dynamic address family detection mandate 627 that you are running a kernel of 20110525 or later. Make sure to 628 follow the update procedure to boot a new kernel before installing 629 world. 630 63120110513: 632 Support for sun4v architecture is officially dropped 633 63420110503: 635 Several KPI breaking changes have been committed to the mii(4) layer, 636 the PHY drivers and consequently some Ethernet drivers using mii(4). 637 This means that miibus.ko and the modules of the affected Ethernet 638 drivers need to be recompiled. 639 640 Note to kernel developers: Given that the OUI bit reversion problem 641 was fixed as part of these changes all mii(4) commits related to OUIs, 642 i.e. to sys/dev/mii/miidevs, PHY driver probing and vendor specific 643 handling, no longer can be merged verbatim to stable/8 and previous 644 branches. 645 64620110430: 647 Users of the Atheros AR71xx SoC code now need to add 'device ar71xx_pci' 648 into their kernel configurations along with 'device pci'. 649 65020110427: 651 The default NFS client is now the new NFS client, so fstype "newnfs" 652 is now "nfs" and the regular/old NFS client is now fstype "oldnfs". 653 Although mounts via fstype "nfs" will usually work without userland 654 changes, it is recommended that the mount(8) and mount_nfs(8) 655 commands be rebuilt from sources and that a link to mount_nfs called 656 mount_oldnfs be created. The new client is compiled into the 657 kernel with "options NFSCL" and this is needed for diskless root 658 file systems. The GENERIC kernel configs have been changed to use 659 NFSCL and NFSD (the new server) instead of NFSCLIENT and NFSSERVER. 660 To use the regular/old client, you can "mount -t oldnfs ...". For 661 a diskless root file system, you must also include a line like: 662 663 vfs.root.mountfrom="oldnfs:" 664 665 in the boot/loader.conf on the root fs on the NFS server to make 666 a diskless root fs use the old client. 667 66820110424: 669 The GENERIC kernels for all architectures now default to the new 670 CAM-based ATA stack. It means that all legacy ATA drivers were 671 removed and replaced by respective CAM drivers. If you are using 672 ATA device names in /etc/fstab or other places, make sure to update 673 them respectively (adX -> adaY, acdX -> cdY, afdX -> daY, astX -> saY, 674 where 'Y's are the sequential numbers starting from zero for each type 675 in order of detection, unless configured otherwise with tunables, 676 see cam(4)). There will be symbolic links created in /dev/ to map 677 old adX devices to the respective adaY. They should provide basic 678 compatibility for file systems mounting in most cases, but they do 679 not support old user-level APIs and do not have respective providers 680 in GEOM. Consider using updated management tools with new device names. 681 682 It is possible to load devices ahci, ata, siis and mvs as modules, 683 but option ATA_CAM should remain in kernel configuration to make ata 684 module work as CAM driver supporting legacy ATA controllers. Device ata 685 still can be used in modular fashion (atacore + ...). Modules atadisk 686 and atapi* are not used and won't affect operation in ATA_CAM mode. 687 Note that to use CAM-based ATA kernel should include CAM devices 688 scbus, pass, da (or explicitly ada), cd and optionally others. All of 689 them are parts of the cam module. 690 691 ataraid(4) functionality is now supported by the RAID GEOM class. 692 To use it you can load geom_raid kernel module and use graid(8) tool 693 for management. Instead of /dev/arX device names, use /dev/raid/rX. 694 695 No kernel config options or code have been removed, so if a problem 696 arises, please report it and optionally revert to the old ATA stack. 697 In order to do it you can remove from the kernel config: 698 options ATA_CAM 699 device ahci 700 device mvs 701 device siis 702 , and instead add back: 703 device atadisk # ATA disk drives 704 device ataraid # ATA RAID drives 705 device atapicd # ATAPI CDROM drives 706 device atapifd # ATAPI floppy drives 707 device atapist # ATAPI tape drives 708 70920110423: 710 The default NFS server has been changed to the new server, which 711 was referred to as the experimental server. If you need to switch 712 back to the old NFS server, you must now put the "-o" option on 713 both the mountd and nfsd commands. This can be done using the 714 mountd_flags and nfs_server_flags rc.conf variables until an 715 update to the rc scripts is committed, which is coming soon. 716 71720110418: 718 The GNU Objective-C runtime library (libobjc), and other Objective-C 719 related components have been removed from the base system. If you 720 require an Objective-C library, please use one of the available ports. 721 72220110331: 723 ath(4) has been split into bus- and device- modules. if_ath contains 724 the HAL, the TX rate control and the network device code. if_ath_pci 725 contains the PCI bus glue. For Atheros MIPS embedded systems, if_ath_ahb 726 contains the AHB glue. Users need to load both if_ath_pci and if_ath 727 in order to use ath on everything else. 728 729 TO REPEAT: if_ath_ahb is not needed for normal users. Normal users only 730 need to load if_ath and if_ath_pci for ath(4) operation. 731 73220110314: 733 As part of the replacement of sysinstall, the process of building 734 release media has changed significantly. For details, please re-read 735 release(7), which has been updated to reflect the new build process. 736 73720110218: 738 GNU binutils 2.17.50 (as of 2007-07-03) has been merged to -HEAD. This 739 is the last available version under GPLv2. It brings a number of new 740 features, such as support for newer x86 CPU's (with SSE-3, SSSE-3, SSE 741 4.1 and SSE 4.2), better support for powerpc64, a number of new 742 directives, and lots of other small improvements. See the ChangeLog 743 file in contrib/binutils for the full details. 744 74520110218: 746 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868 747 compliant, and will now use half of hash for authentication. 748 This will break interoperability with all stacks (including all 749 actual FreeBSD versions) who implement 750 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for 751 authentication). 752 The only workaround with such peers is to use another HMAC 753 algorithm for IPsec ("phase 2") authentication. 754 75520110207: 756 Remove the uio_yield prototype and symbol. This function has 757 been misnamed since it was introduced and should not be 758 globally exposed with this name. The equivalent functionality 759 is now available using kern_yield(curthread->td_user_pri). 760 The function remains undocumented. 761 76220110112: 763 A SYSCTL_[ADD_]UQUAD was added for unsigned uint64_t pointers, 764 symmetric with the existing SYSCTL_[ADD_]QUAD. Type checking 765 for scalar sysctls is defined but disabled. Code that needs 766 UQUAD to pass the type checking that must compile on older 767 systems where the define is not present can check against 768 __FreeBSD_version >= 900030. 769 770 The system dialog(1) has been replaced with a new version previously 771 in ports as devel/cdialog. dialog(1) is mostly command-line compatible 772 with the previous version, but the libdialog associated with it has 773 a largely incompatible API. As such, the original version of libdialog 774 will be kept temporarily as libodialog, until its base system consumers 775 are replaced or updated. Bump __FreeBSD_version to 900030. 776 77720110103: 778 If you are trying to run make universe on a -stable system, and you get 779 the following warning: 780 "Makefile", line 356: "Target architecture for i386/conf/GENERIC 781 unknown. config(8) likely too old." 782 or something similar to it, then you must upgrade your -stable system 783 to 8.2-Release or newer (really, any time after r210146 7/15/2010 in 784 stable/8) or build the config from the latest stable/8 branch and 785 install it on your system. 786 787 Prior to this date, building a current universe on 8-stable system from 788 between 7/15/2010 and 1/2/2011 would result in a weird shell parsing 789 error in the first kernel build phase. A new config on those old 790 systems will fix that problem for older versions of -current. 791 79220101228: 793 The TCP stack has been modified to allow Khelp modules to interact with 794 it via helper hook points and store per-connection data in the TCP 795 control block. Bump __FreeBSD_version to 900029. User space tools that 796 rely on the size of struct tcpcb in tcp_var.h (e.g. sockstat) need to 797 be recompiled. 798 79920101114: 800 Generic IEEE 802.3 annex 31B full duplex flow control support has been 801 added to mii(4) and bge(4), bce(4), msk(4), nfe(4) and stge(4) along 802 with brgphy(4), e1000phy(4) as well as ip1000phy() have been converted 803 to take advantage of it instead of using custom implementations. This 804 means that these drivers now no longer unconditionally advertise 805 support for flow control but only do so if flow control is a selected 806 media option. This was implemented in the generic support that way in 807 order to allow flow control to be switched on and off via ifconfig(8) 808 with the PHY specific default to typically off in order to protect 809 from unwanted effects. Consequently, if you used flow control with 810 one of the above mentioned drivers you now need to explicitly enable 811 it, for example via: 812 ifconfig bge0 media auto mediaopt flowcontrol 813 814 Along with the above mentioned changes generic support for setting 815 1000baseT master mode also has been added and brgphy(4), ciphy(4), 816 e1000phy(4) as well as ip1000phy(4) have been converted to take 817 advantage of it. This means that these drivers now no longer take the 818 link0 parameter for selecting master mode but the master media option 819 has to be used instead, for example like in the following: 820 ifconfig bge0 media 1000baseT mediaopt full-duplex,master 821 822 Selection of master mode now is also available with all other PHY 823 drivers supporting 1000baseT. 824 82520101111: 826 The TCP stack has received a significant update to add support for 827 modularised congestion control and generally improve the clarity of 828 congestion control decisions. Bump __FreeBSD_version to 900025. User 829 space tools that rely on the size of struct tcpcb in tcp_var.h (e.g. 830 sockstat) need to be recompiled. 831 83220101002: 833 The man(1) utility has been replaced by a new version that no longer 834 uses /etc/manpath.config. Please consult man.conf(5) for how to 835 migrate local entries to the new format. 836 83720100928: 838 The copyright strings printed by login(1) and sshd(8) at the time of a 839 new connection have been removed to follow other operating systems and 840 upstream sshd. 841 84220100915: 843 A workaround for a fixed ld bug has been removed in kernel code, 844 so make sure that your system ld is built from sources after 845 revision 210245 from 2010-07-19 (r211583 if building head kernel 846 on stable/8, r211584 for stable/7; both from 2010-08-21). 847 A symptom of incorrect ld version is different addresses for 848 set_pcpu section and __start_set_pcpu symbol in kernel and/or modules. 849 85020100913: 851 The $ipv6_prefer variable in rc.conf(5) has been split into 852 $ip6addrctl_policy and $ipv6_activate_all_interfaces. 853 854 The $ip6addrctl_policy is a variable to choose a pre-defined 855 address selection policy set by ip6addrctl(8). A value 856 "ipv4_prefer", "ipv6_prefer" or "AUTO" can be specified. The 857 default is "AUTO". 858 859 The $ipv6_activate_all_interfaces specifies whether IFDISABLED 860 flag (see an entry of 20090926) is set on an interface with no 861 corresponding $ifconfig_IF_ipv6 line. The default is "NO" for 862 security reason. If you want IPv6 link-local address on all 863 interfaces by default, set this to "YES". 864 865 The old ipv6_prefer="YES" is equivalent to 866 ipv6_activate_all_interfaces="YES" and 867 ip6addrctl_policy="ipv6_prefer". 868 86920100913: 870 DTrace has grown support for userland tracing. Due to this, DTrace is 871 now i386 and amd64 only. 872 dtruss(1) is now installed by default on those systems and a new 873 kernel module is needed for userland tracing: fasttrap. 874 No changes to your kernel config file are necessary to enable 875 userland tracing, but you might consider adding 'STRIP=' and 876 'CFLAGS+=-fno-omit-frame-pointer' to your make.conf if you want 877 to have informative userland stack traces in DTrace (ustack). 878 87920100725: 880 The acpi_aiboost(4) driver has been removed in favor of the new 881 aibs(4) driver. You should update your kernel configuration file. 882 88320100722: 884 BSD grep has been imported to the base system and it is built by 885 default. It is completely BSD licensed, highly GNU-compatible, uses 886 less memory than its GNU counterpart and has a small codebase. 887 However, it is slower than its GNU counterpart, which is mostly 888 noticeable for larger searches, for smaller ones it is measurable 889 but not significant. The reason is complex, the most important factor 890 is that we lack a modern and efficient regex library and GNU 891 overcomes this by optimizing the searches internally. Future work 892 on improving the regex performance is planned, for the meantime, 893 users that need better performance, can build GNU grep instead by 894 setting the WITH_GNU_GREP knob. 895 89620100713: 897 Due to the import of powerpc64 support, all existing powerpc kernel 898 configuration files must be updated with a machine directive like this: 899 machine powerpc powerpc 900 901 In addition, an updated config(8) is required to build powerpc kernels 902 after this change. 903 90420100713: 905 A new version of ZFS (version 15) has been merged to -HEAD. 906 This version uses a python library for the following subcommands: 907 zfs allow, zfs unallow, zfs groupspace, zfs userspace. 908 For full functionality of these commands the following port must 909 be installed: sysutils/py-zfs 910 91120100429: 912 'vm_page's are now hashed by physical address to an array of mutexes. 913 Currently this is only used to serialize access to hold_count. Over 914 time the page queue mutex will be peeled away. This changes the size 915 of pmap on every architecture. And requires all callers of vm_page_hold 916 and vm_page_unhold to be updated. 917 91820100402: 919 WITH_CTF can now be specified in src.conf (not recommended, there 920 are some problems with static executables), make.conf (would also 921 affect ports which do not use GNU make and do not override the 922 compile targets) or in the kernel config (via "makeoptions 923 WITH_CTF=yes"). 924 When WITH_CTF was specified there before this was silently ignored, 925 so make sure that WITH_CTF is not used in places which could lead 926 to unwanted behavior. 927 92820100311: 929 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32 930 to allow 32-bit compatibility on non-x86 platforms. All kernel 931 configurations on amd64 and ia64 platforms using these options must 932 be modified accordingly. 933 93420100113: 935 The utmp user accounting database has been replaced with utmpx, 936 the user accounting interface standardized by POSIX. 937 Unfortunately the semantics of utmp and utmpx don't match, 938 making it practically impossible to support both interfaces. 939 The user accounting database is used by tools like finger(1), 940 last(1), talk(1), w(1) and ac(8). 941 942 All applications in the base system use utmpx. This means only 943 local binaries (e.g. from the ports tree) may still use these 944 utmp database files. These applications must be rebuilt to make 945 use of utmpx. 946 947 After the system has been upgraded, it is safe to remove the old 948 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*), 949 assuming their contents is of no importance anymore. Old wtmp 950 databases can only be used by last(1) and ac(8) after they have 951 been converted to the new format using wtmpcvt(1). 952 95320100108: 954 Introduce the kernel thread "deadlock resolver" (which can be enabled 955 via the DEADLKRES option, see NOTES for more details) and the 956 sleepq_type() function for sleepqueues. 957 95820091202: 959 The rc.firewall and rc.firewall6 were unified, and 960 rc.firewall6 and rc.d/ip6fw were removed. 961 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc 962 variables are obsoleted. Instead, the following new rc 963 variables are added to rc.d/ipfw: 964 965 firewall_client_net_ipv6, firewall_simple_iif_ipv6, 966 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6, 967 firewall_simple_onet_ipv6, firewall_trusted_ipv6 968 969 The meanings correspond to the relevant IPv4 variables. 970 97120091125: 972 8.0-RELEASE. 973 97420091113: 975 The default terminal emulation for syscons(4) has been changed 976 from cons25 to xterm on all platforms except pc98. This means 977 that the /etc/ttys file needs to be updated to ensure correct 978 operation of applications on the console. 979 980 The terminal emulation style can be toggled per window by using 981 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration 982 options can be used to change the compile-time default back to 983 cons25. 984 985 To prevent graphical artifacts, make sure the TERM environment 986 variable is set to match the terminal emulation that is being 987 performed by syscons(4). 988 98920091109: 990 The layout of the structure ieee80211req_scan_result has changed. 991 Applications that require wireless scan results (e.g. ifconfig(8)) 992 from net80211 need to be recompiled. 993 994 Applications such as wpa_supplicant(8) may require a full world 995 build without using NO_CLEAN in order to get synchronized with the 996 new structure. 997 99820091025: 999 The iwn(4) driver has been updated to support the 5000 and 5150 series. 1000 There's one kernel module for each firmware. Adding "device iwnfw" 1001 to the kernel configuration file means including all three firmware 1002 images inside the kernel. If you want to include just the one for 1003 your wireless card, use the devices iwn4965fw, iwn5000fw or 1004 iwn5150fw. 1005 100620090926: 1007 The rc.d/network_ipv6, IPv6 configuration script has been integrated 1008 into rc.d/netif. The changes are the following: 1009 1010 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF 1011 for IPv4. For aliases, $ifconfig_IF_aliasN should be used. 1012 Note that both variables need the "inet6" keyword at the head. 1013 1014 Do not set $ipv6_network_interfaces manually if you do not 1015 understand what you are doing. It is not needed in most cases. 1016 1017 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but 1018 they are obsolete. 1019 1020 2. $ipv6_enable is obsolete. Use $ipv6_prefer and 1021 "inet6 accept_rtadv" keyword in ifconfig(8) instead. 1022 1023 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and 1024 all configured interfaces have "inet6 accept_rtadv" in the 1025 $ifconfig_IF_ipv6. These are for backward compatibility. 1026 1027 3. A new variable $ipv6_prefer has been added. If NO, IPv6 1028 functionality of interfaces with no corresponding 1029 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag, 1030 and the default address selection policy of ip6addrctl(8) 1031 is the IPv4-preferred one (see rc.d/ip6addrctl for more details). 1032 Note that if you want to configure IPv6 functionality on the 1033 disabled interfaces after boot, first you need to clear the flag by 1034 using ifconfig(8) like: 1035 1036 ifconfig em0 inet6 -ifdisabled 1037 1038 If YES, the default address selection policy is set as 1039 IPv6-preferred. 1040 1041 The default value of $ipv6_prefer is NO. 1042 1043 4. If your system need to receive Router Advertisement messages, 1044 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8) 1045 scripts automatically invoke rtsol(8) when the interface becomes 1046 UP. The Router Advertisement messages are used for SLAAC 1047 (State-Less Address AutoConfiguration). 1048 104920090922: 1050 802.11s D3.03 support was committed. This is incompatible with the 1051 previous code, which was based on D3.0. 1052 105320090912: 1054 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value 1055 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to 1056 control whether accepting Router Advertisement messages or not. 1057 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and 1058 a sysctl variable net.inet6.ip6.auto_linklocal is its default value. 1059 The ifconfig(8) utility now supports these flags. 1060 106120090910: 1062 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for 1063 mount(8) and -a option for df(1) to see them. 1064 106520090825: 1066 The old tunable hw.bus.devctl_disable has been superseded by 1067 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be 1068 replaced by hw.bus.devctl_queue=0. The default for this new tunable 1069 is 1000. 1070 107120090813: 1072 Remove the option STOP_NMI. The default action is now to use NMI only 1073 for KDB via the newly introduced function stop_cpus_hard() and 1074 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64. 1075 107620090803: 1077 The stable/8 branch created in subversion. This corresponds to the 1078 RELENG_8 branch in CVS. 1079 108020090719: 1081 Bump the shared library version numbers for all libraries that do not 1082 use symbol versioning as part of the 8.0-RELEASE cycle. Bump 1083 __FreeBSD_version to 800105. 1084 108520090714: 1086 Due to changes in the implementation of virtual network stack support, 1087 all network-related kernel modules must be recompiled. As this change 1088 breaks the ABI, bump __FreeBSD_version to 800104. 1089 109020090713: 1091 The TOE interface to the TCP syncache has been modified to remove 1092 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. 1093 The cxgb driver is the only TOE consumer affected by this change, and 1094 needs to be recompiled along with the kernel. As this change breaks 1095 the ABI, bump __FreeBSD_version to 800103. 1096 109720090712: 1098 Padding has been added to struct tcpcb, sackhint and tcpstat in 1099 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst 1100 maintaining the ABI. However, this change breaks the ABI, so bump 1101 __FreeBSD_version to 800102. User space tools that rely on the size of 1102 any of these structs (e.g. sockstat) need to be recompiled. 1103 110420090630: 1105 The NFS_LEGACYRPC option has been removed along with the old kernel 1106 RPC implementation that this option selected. Kernel configurations 1107 may need to be adjusted. 1108 110920090629: 1110 The network interface device nodes at /dev/net/<interface> have been 1111 removed. All ioctl operations can be performed the normal way using 1112 routing sockets. The kqueue functionality can generally be replaced 1113 with routing sockets. 1114 111520090628: 1116 The documentation from the FreeBSD Documentation Project (Handbook, 1117 FAQ, etc.) is now installed via packages by sysinstall(8) and under 1118 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc. 1119 112020090624: 1121 The ABI of various structures related to the SYSV IPC API have been 1122 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel 1123 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to 1124 800100. 1125 112620090622: 1127 Layout of struct vnet has changed as routing related variables were 1128 moved to their own Vimage module. Modules need to be recompiled. Bump 1129 __FreeBSD_version to 800099. 1130 113120090619: 1132 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024 1133 respectively. As long as no more than 16 groups per process are used, 1134 no changes should be visible. When more than 16 groups are used, old 1135 binaries may fail if they call getgroups() or getgrouplist() with 1136 statically sized storage. Recompiling will work around this, but 1137 applications should be modified to use dynamically allocated storage 1138 for group arrays as POSIX.1-2008 does not cap an implementation's 1139 number of supported groups at NGROUPS_MAX+1 as previous versions did. 1140 1141 NFS and portalfs mounts may also be affected as the list of groups is 1142 truncated to 16. Users of NFS who use more than 16 groups, should 1143 take care that negative group permissions are not used on the exported 1144 file systems as they will not be reliable unless a GSSAPI based 1145 authentication method is used. 1146 114720090616: 1148 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This 1149 option compiles in the support for adaptive spinning for lockmgrs 1150 which want to enable it. The lockinit() function now accepts the flag 1151 LK_ADAPTIVE in order to make the lock object subject to adaptive 1152 spinning when both held in write and read mode. 1153 115420090613: 1155 The layout of the structure returned by IEEE80211_IOC_STA_INFO has 1156 changed. User applications that use this ioctl need to be rebuilt. 1157 115820090611: 1159 The layout of struct thread has changed. Kernel and modules need to 1160 be rebuilt. 1161 116220090608: 1163 The layout of structs ifnet, domain, protosw and vnet_net has changed. 1164 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097. 1165 116620090602: 1167 window(1) has been removed from the base system. It can now be 1168 installed from ports. The port is called misc/window. 1169 117020090601: 1171 The way we are storing and accessing `routing table' entries has 1172 changed. Programs reading the FIB, like netstat, need to be 1173 re-compiled. 1174 117520090601: 1176 A new netisr implementation has been added for FreeBSD 8. Network 1177 file system modules, such as igmp, ipdivert, and others, should be 1178 rebuilt. 1179 Bump __FreeBSD_version to 800096. 1180 118120090530: 1182 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no 1183 more valid. 1184 118520090530: 1186 Add VOP_ACCESSX(9). File system modules need to be rebuilt. 1187 Bump __FreeBSD_version to 800094. 1188 118920090529: 1190 Add mnt_xflag field to 'struct mount'. File system modules need to be 1191 rebuilt. 1192 Bump __FreeBSD_version to 800093. 1193 119420090528: 1195 The compiling option ADAPTIVE_SX has been retired while it has been 1196 introduced the option NO_ADAPTIVE_SX which handles the reversed logic. 1197 The KPI for sx_init_flags() changes as accepting flags: 1198 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has 1199 been introduced in order to handle the reversed logic. 1200 Bump __FreeBSD_version to 800092. 1201 120220090527: 1203 Add support for hierarchical jails. Remove global securelevel. 1204 Bump __FreeBSD_version to 800091. 1205 120620090523: 1207 The layout of struct vnet_net has changed, therefore modules 1208 need to be rebuilt. 1209 Bump __FreeBSD_version to 800090. 1210 121120090523: 1212 The newly imported zic(8) produces a new format in the output. Please 1213 run tzsetup(8) to install the newly created data to /etc/localtime. 1214 121520090520: 1216 The sysctl tree for the usb stack has renamed from hw.usb2.* to 1217 hw.usb.* and is now consistent again with previous releases. 1218 121920090520: 1220 802.11 monitor mode support was revised and driver api's were changed. 1221 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead 1222 of DLT_IEEE802_11. No user-visible data structures were changed but 1223 applications that use DLT_IEEE802_11 may require changes. 1224 Bump __FreeBSD_version to 800088. 1225 122620090430: 1227 The layout of the following structs has changed: sysctl_oid, 1228 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet, 1229 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or 1230 panics may be experienced. World rebuild is required for 1231 correctly checking networking state from userland. 1232 Bump __FreeBSD_version to 800085. 1233 123420090429: 1235 MLDv2 and Source-Specific Multicast (SSM) have been merged 1236 to the IPv6 stack. VIMAGE hooks are in but not yet used. 1237 The implementation of SSM within FreeBSD's IPv6 stack closely 1238 follows the IPv4 implementation. 1239 1240 For kernel developers: 1241 1242 * The most important changes are that the ip6_output() and 1243 ip6_input() paths no longer take the IN6_MULTI_LOCK, 1244 and this lock has been downgraded to a non-recursive mutex. 1245 1246 * As with the changes to the IPv4 stack to support SSM, filtering 1247 of inbound multicast traffic must now be performed by transport 1248 protocols within the IPv6 stack. This does not apply to TCP and 1249 SCTP, however, it does apply to UDP in IPv6 and raw IPv6. 1250 1251 * The KPIs used by IPv6 multicast are similar to those used by 1252 the IPv4 stack, with the following differences: 1253 * im6o_mc_filter() is analogous to imo_multicast_filter(). 1254 * The legacy KAME entry points in6_joingroup and in6_leavegroup() 1255 are shimmed to in6_mc_join() and in6_mc_leave() respectively. 1256 * IN6_LOOKUP_MULTI() has been deprecated and removed. 1257 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs 1258 for MLDv1 have an additional 'timer' argument which is used to 1259 jitter the initial membership report for the solicited-node 1260 multicast membership on-link. 1261 * This is not strictly needed for MLDv2, which already jitters 1262 its report transmissions. However, the 'timer' argument is 1263 preserved in case MLDv1 is active on the interface. 1264 1265 * The KAME linked-list based IPv6 membership implementation has 1266 been refactored to use a vector similar to that used by the IPv4 1267 stack. 1268 Code which maintains a list of its own multicast memberships 1269 internally, e.g. carp, has been updated to reflect the new 1270 semantics. 1271 1272 * There is a known Lock Order Reversal (LOR) due to in6_setscope() 1273 acquiring the IF_AFDATA_LOCK and being called within ip6_output(). 1274 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an 1275 implementation constraint which needs to be addressed in HEAD. 1276 1277 For application developers: 1278 1279 * The changes are broadly similar to those made for the IPv4 1280 stack. 1281 1282 * The use of IPv4 and IPv6 multicast socket options on the same 1283 socket, using mapped addresses, HAS NOT been tested or supported. 1284 1285 * There are a number of issues with the implementation of various 1286 IPv6 multicast APIs which need to be resolved in the API surface 1287 before the implementation is fully compatible with KAME userland 1288 use, and these are mostly to do with interface index treatment. 1289 1290 * The literature available discusses the use of either the delta / ASM 1291 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API 1292 using setsourcefilter(3)/getsourcefilter(3). For more information 1293 please refer to RFC 3768, 'Socket Interface Extensions for 1294 Multicast Source Filters'. 1295 1296 * Applications which use the published RFC 3678 APIs should be fine. 1297 1298 For systems administrators: 1299 1300 * The mtest(8) utility has been refactored to support IPv6, in 1301 addition to IPv4. Interface addresses are no longer accepted 1302 as arguments, their names must be used instead. The utility 1303 will map the interface name to its first IPv4 address as 1304 returned by getifaddrs(3). 1305 1306 * The ifmcstat(8) utility has also been updated to print the MLDv2 1307 endpoint state and source filter lists via sysctl(3). 1308 1309 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable 1310 loopback of IPv6 multicast datagrams by default; it defaults to 1 1311 to preserve the existing behaviour. Disabling multicast loopback is 1312 recommended for optimal system performance. 1313 1314 * The IPv6 MROUTING code has been changed to examine this sysctl 1315 instead of attempting to perform a group lookup before looping 1316 back forwarded datagrams. 1317 1318 Bump __FreeBSD_version to 800084. 1319 132020090422: 1321 Implement low-level Bluetooth HCI API. 1322 Bump __FreeBSD_version to 800083. 1323 132420090419: 1325 The layout of struct malloc_type, used by modules to register new 1326 memory allocation types, has changed. Most modules will need to 1327 be rebuilt or panics may be experienced. 1328 Bump __FreeBSD_version to 800081. 1329 133020090415: 1331 Anticipate overflowing inp_flags - add inp_flags2. 1332 This changes most offsets in inpcb, so checking v4 connection 1333 state will require a world rebuild. 1334 Bump __FreeBSD_version to 800080. 1335 133620090415: 1337 Add an llentry to struct route and struct route_in6. Modules 1338 embedding a struct route will need to be recompiled. 1339 Bump __FreeBSD_version to 800079. 1340 134120090414: 1342 The size of rt_metrics_lite and by extension rtentry has changed. 1343 Networking administration apps will need to be recompiled. 1344 The route command now supports show as an alias for get, weighting 1345 of routes, sticky and nostick flags to alter the behavior of stateful 1346 load balancing. 1347 Bump __FreeBSD_version to 800078. 1348 134920090408: 1350 Do not use Giant for kbdmux(4) locking. This is wrong and 1351 apparently causing more problems than it solves. This will 1352 re-open the issue where interrupt handlers may race with 1353 kbdmux(4) in polling mode. Typical symptoms include (but 1354 not limited to) duplicated and/or missing characters when 1355 low level console functions (such as gets) are used while 1356 interrupts are enabled (for example geli password prompt, 1357 mountroot prompt etc.). Disabling kbdmux(4) may help. 1358 135920090407: 1360 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed; 1361 kernel modules referencing any of the above need to be recompiled. 1362 Bump __FreeBSD_version to 800075. 1363 136420090320: 1365 GEOM_PART has become the default partition slicer for storage devices, 1366 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It 1367 introduces some changes: 1368 1369 MSDOS/EBR: the devices created from MSDOS extended partition entries 1370 (EBR) can be named differently than with GEOM_MBR and are now symlinks 1371 to devices with offset-based names. fstabs may need to be modified. 1372 1373 BSD: the "geometry does not match label" warning is harmless in most 1374 cases but it points to problems in file system misalignment with 1375 disk geometry. The "c" partition is now implicit, covers the whole 1376 top-level drive and cannot be (mis)used by users. 1377 1378 General: Kernel dumps are now not allowed to be written to devices 1379 whose partition types indicate they are meant to be used for file 1380 systems (or, in case of MSDOS partitions, as something else than 1381 the "386BSD" type). 1382 1383 Most of these changes date approximately from 200812. 1384 138520090319: 1386 The uscanner(4) driver has been removed from the kernel. This follows 1387 Linux removing theirs in 2.6 and making libusb the default interface 1388 (supported by sane). 1389 139020090319: 1391 The multicast forwarding code has been cleaned up. netstat(1) 1392 only relies on KVM now for printing bandwidth upcall meters. 1393 The IPv4 and IPv6 modules are split into ip_mroute_mod and 1394 ip6_mroute_mod respectively. The config(5) options for statically 1395 compiling this code remain the same, i.e. 'options MROUTING'. 1396 139720090315: 1398 Support for the IFF_NEEDSGIANT network interface flag has been 1399 removed, which means that non-MPSAFE network device drivers are no 1400 longer supported. In particular, if_ar, if_sr, and network device 1401 drivers from the old (legacy) USB stack can no longer be built or 1402 used. 1403 140420090313: 1405 POSIX.1 Native Language Support (NLS) has been enabled in libc and 1406 a bunch of new language catalog files have also been added. 1407 This means that some common libc messages are now localized and 1408 they depend on the LC_MESSAGES environmental variable. 1409 141020090313: 1411 The k8temp(4) driver has been renamed to amdtemp(4) since 1412 support for Family 10 and Family 11 CPU families was added. 1413 141420090309: 1415 IGMPv3 and Source-Specific Multicast (SSM) have been merged 1416 to the IPv4 stack. VIMAGE hooks are in but not yet used. 1417 1418 For kernel developers, the most important changes are that the 1419 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(), 1420 and this lock has been downgraded to a non-recursive mutex. 1421 1422 Transport protocols (UDP, Raw IP) are now responsible for filtering 1423 inbound multicast traffic according to group membership and source 1424 filters. The imo_multicast_filter() KPI exists for this purpose. 1425 Transports which do not use multicast (SCTP, TCP) already reject 1426 multicast by default. Forwarding and receive performance may improve 1427 as a mutex acquisition is no longer needed in the ip_input() 1428 low-level input path. in_addmulti() and in_delmulti() are shimmed 1429 to new KPIs which exist to support SSM in-kernel. 1430 1431 For application developers, it is recommended that loopback of 1432 multicast datagrams be disabled for best performance, as this 1433 will still cause the lock to be taken for each looped-back 1434 datagram transmission. The net.inet.ip.mcast.loop sysctl may 1435 be tuned to 0 to disable loopback by default; it defaults to 1 1436 to preserve the existing behaviour. 1437 1438 For systems administrators, to obtain best performance with 1439 multicast reception and multiple groups, it is always recommended 1440 that a card with a suitably precise hash filter is used. Hash 1441 collisions will still result in the lock being taken within the 1442 transport protocol input path to check group membership. 1443 1444 If deploying FreeBSD in an environment with IGMP snooping switches, 1445 it is recommended that the net.inet.igmp.sendlocal sysctl remain 1446 enabled; this forces 224.0.0.0/24 group membership to be announced 1447 via IGMP. 1448 1449 The size of 'struct igmpstat' has changed; netstat needs to be 1450 recompiled to reflect this. 1451 Bump __FreeBSD_version to 800070. 1452 145320090309: 1454 libusb20.so.1 is now installed as libusb.so.1 and the ports system 1455 updated to use it. This requires a buildworld/installworld in order to 1456 update the library and dependencies (usbconfig, etc). Its advisable to 1457 rebuild all ports which uses libusb. More specific directions are given 1458 in the ports collection UPDATING file. Any /etc/libmap.conf entries for 1459 libusb are no longer required and can be removed. 1460 146120090302: 1462 A workaround is committed to allow the creation of System V shared 1463 memory segment of size > 2 GB on the 64-bit architectures. 1464 Due to a limitation of the existing ABI, the shm_segsz member 1465 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is 1466 wrong for large segments. Note that limits must be explicitly 1467 raised to allow such segments to be created. 1468 146920090301: 1470 The layout of struct ifnet has changed, requiring a rebuild of all 1471 network device driver modules. 1472 147320090227: 1474 The /dev handling for the new USB stack has changed, a 1475 buildworld/installworld is required for libusb20. 1476 147720090223: 1478 The new USB2 stack has now been permanently moved in and all kernel and 1479 module names reverted to their previous values (eg, usb, ehci, ohci, 1480 ums, ...). The old usb stack can be compiled in by prefixing the name 1481 with the letter 'o', the old usb modules have been removed. 1482 Updating entry 20090216 for xorg and 20090215 for libmap may still 1483 apply. 1484 148520090217: 1486 The rc.conf(5) option if_up_delay has been renamed to 1487 defaultroute_delay to better reflect its purpose. If you have 1488 customized this setting in /etc/rc.conf you need to update it to 1489 use the new name. 1490 149120090216: 1492 xorg 7.4 wants to configure its input devices via hald which does not 1493 yet work with USB2. If the keyboard/mouse does not work in xorg then 1494 add 1495 Option "AllowEmptyInput" "off" 1496 to your ServerLayout section. This will cause X to use the configured 1497 kbd and mouse sections from your xorg.conf. 1498 149920090215: 1500 The GENERIC kernels for all architectures now default to the new USB2 1501 stack. No kernel config options or code have been removed so if a 1502 problem arises please report it and optionally revert to the old USB 1503 stack. If you are loading USB kernel modules or have a custom kernel 1504 that includes GENERIC then ensure that usb names are also changed over, 1505 eg uftdi -> usb2_serial_ftdi. 1506 1507 Older programs linked against the ports libusb 0.1 need to be 1508 redirected to the new stack's libusb20. /etc/libmap.conf can 1509 be used for this: 1510 # Map old usb library to new one for usb2 stack 1511 libusb-0.1.so.8 libusb20.so.1 1512 151320090209: 1514 All USB ethernet devices now attach as interfaces under the name ueN 1515 (eg. ue0). This is to provide a predictable name as vendors often 1516 change usb chipsets in a product without notice. 1517 151820090203: 1519 The ichsmb(4) driver has been changed to require SMBus slave 1520 addresses be left-justified (xxxxxxx0b) rather than right-justified. 1521 All of the other SMBus controller drivers require left-justified 1522 slave addresses, so this change makes all the drivers provide the 1523 same interface. 1524 152520090201: 1526 INET6 statistics (struct ip6stat) was updated. 1527 netstat(1) needs to be recompiled. 1528 152920090119: 1530 NTFS has been removed from GENERIC kernel on amd64 to match 1531 GENERIC on i386. Should not cause any issues since mount_ntfs(8) 1532 will load ntfs.ko module automatically when NTFS support is 1533 actually needed, unless ntfs.ko is not installed or security 1534 level prohibits loading kernel modules. If either is the case, 1535 "options NTFS" has to be added into kernel config. 1536 153720090115: 1538 TCP Appropriate Byte Counting (RFC 3465) support added to kernel. 1539 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to 1540 800061. User space tools that rely on the size of struct tcpcb in 1541 tcp_var.h (e.g. sockstat) need to be recompiled. 1542 154320081225: 1544 ng_tty(4) module updated to match the new TTY subsystem. 1545 Due to API change, user-level applications must be updated. 1546 New API support added to mpd5 CVS and expected to be present 1547 in next mpd5.3 release. 1548 154920081219: 1550 With __FreeBSD_version 800060 the makefs tool is part of 1551 the base system (it was a port). 1552 155320081216: 1554 The afdata and ifnet locks have been changed from mutexes to 1555 rwlocks, network modules will need to be re-compiled. 1556 155720081214: 1558 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite. 1559 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated. 1560 The new code reduced struct rtentry{} by 16 bytes on 32-bit 1561 architecture and 40 bytes on 64-bit architecture. The userland 1562 applications "arp" and "ndp" have been updated accordingly. 1563 The output from "netstat -r" shows only routing entries and 1564 none of the L2 information. 1565 156620081130: 1567 __FreeBSD_version 800057 marks the switchover from the 1568 binary ath hal to source code. Users must add the line: 1569 1570 options AH_SUPPORT_AR5416 1571 1572 to their kernel config files when specifying: 1573 1574 device ath_hal 1575 1576 The ath_hal module no longer exists; the code is now compiled 1577 together with the driver in the ath module. It is now 1578 possible to tailor chip support (i.e. reduce the set of chips 1579 and thereby the code size); consult ath_hal(4) for details. 1580 158120081121: 1582 __FreeBSD_version 800054 adds memory barriers to 1583 <machine/atomic.h>, new interfaces to ifnet to facilitate 1584 multiple hardware transmit queues for cards that support 1585 them, and a lock-less ring-buffer implementation to 1586 enable drivers to more efficiently manage queueing of 1587 packets. 1588 158920081117: 1590 A new version of ZFS (version 13) has been merged to -HEAD. 1591 This version has zpool attribute "listsnapshots" off by 1592 default, which means "zfs list" does not show snapshots, 1593 and is the same as Solaris behavior. 1594 159520081028: 1596 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled. 1597 159820081009: 1599 The uhci, ohci, ehci and slhci USB Host controller drivers have 1600 been put into separate modules. If you load the usb module 1601 separately through loader.conf you will need to load the 1602 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0 1603 controller add the following to loader.conf: 1604 1605 uhci_load="YES" 1606 ehci_load="YES" 1607 160820081009: 1609 The ABI used by the PMC toolset has changed. Please keep 1610 userland (libpmc(3)) and the kernel module (hwpmc(4)) in 1611 sync. 1612 161320081009: 1614 atapci kernel module now includes only generic PCI ATA 1615 driver. AHCI driver moved to ataahci kernel module. 1616 All vendor-specific code moved into separate kernel modules: 1617 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek, 1618 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron, 1619 atamarvell, atamicron, atanational, atanetcell, atanvidia, 1620 atapromise, ataserverworks, atasiliconimage, atasis, atavia 1621 162220080820: 1623 The TTY subsystem of the kernel has been replaced by a new 1624 implementation, which provides better scalability and an 1625 improved driver model. Most common drivers have been migrated to 1626 the new TTY subsystem, while others have not. The following 1627 drivers have not yet been ported to the new TTY layer: 1628 1629 PCI/ISA: 1630 cy, digi, rc, rp, sio 1631 1632 USB: 1633 ubser, ucycom 1634 1635 Line disciplines: 1636 ng_h4, ng_tty, ppp, sl, snp 1637 1638 Adding these drivers to your kernel configuration file shall 1639 cause compilation to fail. 1640 164120080818: 1642 ntpd has been upgraded to 4.2.4p5. 1643 164420080801: 1645 OpenSSH has been upgraded to 5.1p1. 1646 1647 For many years, FreeBSD's version of OpenSSH preferred DSA 1648 over RSA for host and user authentication keys. With this 1649 upgrade, we've switched to the vendor's default of RSA over 1650 DSA. This may cause upgraded clients to warn about unknown 1651 host keys even for previously known hosts. Users should 1652 follow the usual procedure for verifying host keys before 1653 accepting the RSA key. 1654 1655 This can be circumvented by setting the "HostKeyAlgorithms" 1656 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh 1657 command line. 1658 1659 Please note that the sequence of keys offered for 1660 authentication has been changed as well. You may want to 1661 specify IdentityFile in a different order to revert this 1662 behavior. 1663 166420080713: 1665 The sio(4) driver has been removed from the i386 and amd64 1666 kernel configuration files. This means uart(4) is now the 1667 default serial port driver on those platforms as well. 1668 1669 To prevent collisions with the sio(4) driver, the uart(4) driver 1670 uses different names for its device nodes. This means the 1671 onboard serial port will now most likely be called "ttyu0" 1672 instead of "ttyd0". You may need to reconfigure applications to 1673 use the new device names. 1674 1675 When using the serial port as a boot console, be sure to update 1676 /boot/device.hints and /etc/ttys before booting the new kernel. 1677 If you forget to do so, you can still manually specify the hints 1678 at the loader prompt: 1679 1680 set hint.uart.0.at="isa" 1681 set hint.uart.0.port="0x3F8" 1682 set hint.uart.0.flags="0x10" 1683 set hint.uart.0.irq="4" 1684 boot -s 1685 168620080609: 1687 The gpt(8) utility has been removed. Use gpart(8) to partition 1688 disks instead. 1689 169020080603: 1691 The version that Linuxulator emulates was changed from 2.4.2 1692 to 2.6.16. If you experience any problems with Linux binaries 1693 please try to set sysctl compat.linux.osrelease to 2.4.2 and 1694 if it fixes the problem contact emulation mailing list. 1695 169620080525: 1697 ISDN4BSD (I4B) was removed from the src tree. You may need to 1698 update a your kernel configuration and remove relevant entries. 1699 170020080509: 1701 I have checked in code to support multiple routing tables. 1702 See the man pages setfib(1) and setfib(2). 1703 This is a hopefully backwards compatible version, 1704 but to make use of it you need to compile your kernel 1705 with options ROUTETABLES=2 (or more up to 16). 1706 170720080420: 1708 The 802.11 wireless support was redone to enable multi-bss 1709 operation on devices that are capable. The underlying device 1710 is no longer used directly but instead wlanX devices are 1711 cloned with ifconfig. This requires changes to rc.conf files. 1712 For example, change: 1713 ifconfig_ath0="WPA DHCP" 1714 to 1715 wlans_ath0=wlan0 1716 ifconfig_wlan0="WPA DHCP" 1717 see rc.conf(5) for more details. In addition, mergemaster of 1718 /etc/rc.d is highly recommended. Simultaneous update of userland 1719 and kernel wouldn't hurt either. 1720 1721 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta 1722 modules were merged into the base wlan module. All references 1723 to these modules (e.g. in kernel config files) must be removed. 1724 172520080408: 1726 psm(4) has gained write(2) support in native operation level. 1727 Arbitrary commands can be written to /dev/psm%d and status can 1728 be read back from it. Therefore, an application is responsible 1729 for status validation and error recovery. It is a no-op in 1730 other operation levels. 1731 173220080312: 1733 Support for KSE threading has been removed from the kernel. To 1734 run legacy applications linked against KSE libmap.conf may 1735 be used. The following libmap.conf may be used to ensure 1736 compatibility with any prior release: 1737 1738 libpthread.so.1 libthr.so.1 1739 libpthread.so.2 libthr.so.2 1740 libkse.so.3 libthr.so.3 1741 174220080301: 1743 The layout of struct vmspace has changed. This affects libkvm 1744 and any executables that link against libkvm and use the 1745 kvm_getprocs() function. In particular, but not exclusively, 1746 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1). 1747 The effects are minimal, but it's advisable to upgrade world 1748 nonetheless. 1749 175020080229: 1751 The latest em driver no longer has support in it for the 1752 82575 adapter, this is now moved to the igb driver. The 1753 split was done to make new features that are incompatible 1754 with older hardware easier to do. 1755 175620080220: 1757 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4), 1758 likewise the kernel option is now GEOM_LINUX_LVM. 1759 176020080211: 1761 The default NFS mount mode has changed from UDP to TCP for 1762 increased reliability. If you rely on (insecurely) NFS 1763 mounting across a firewall you may need to update your 1764 firewall rules. 1765 176620080208: 1767 Belatedly note the addition of m_collapse for compacting 1768 mbuf chains. 1769 177020080126: 1771 The fts(3) structures have been changed to use adequate 1772 integer types for their members and so to be able to cope 1773 with huge file trees. The old fts(3) ABI is preserved 1774 through symbol versioning in libc, so third-party binaries 1775 using fts(3) should still work, although they will not take 1776 advantage of the extended types. At the same time, some 1777 third-party software might fail to build after this change 1778 due to unportable assumptions made in its source code about 1779 fts(3) structure members. Such software should be fixed 1780 by its vendor or, in the worst case, in the ports tree. 1781 FreeBSD_version 800015 marks this change for the unlikely 1782 case that a portable fix is impossible. 1783 178420080123: 1785 To upgrade to -current after this date, you must be running 1786 FreeBSD not older than 6.0-RELEASE. Upgrading to -current 1787 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems. 1788 178920071128: 1790 The ADAPTIVE_GIANT kernel option has been retired because its 1791 functionality is the default now. 1792 179320071118: 1794 The AT keyboard emulation of sunkbd(4) has been turned on 1795 by default. In order to make the special symbols of the Sun 1796 keyboards driven by sunkbd(4) work under X these now have 1797 to be configured the same way as Sun USB keyboards driven 1798 by ukbd(4) (which also does AT keyboard emulation), f.e.: 1799 1800 Option "XkbLayout" "us" 1801 Option "XkbRules" "xorg" 1802 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us" 1803 180420071024: 1805 It has been decided that it is desirable to provide ABI 1806 backwards compatibility to the FreeBSD 4/5/6 versions of the 1807 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was 1808 broken with the introduction of PCI domain support (see the 1809 20070930 entry). Unfortunately, this required the ABI of 1810 PCIOCGETCONF to be broken again in order to be able to 1811 provide backwards compatibility to the old version of that 1812 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled 1813 again. As for prominent ports this affects neither pciutils 1814 nor xorg-server this time, the hal port needs to be rebuilt 1815 however. 1816 181720071020: 1818 The misnamed kthread_create() and friends have been renamed 1819 to kproc_create() etc. Many of the callers already 1820 used kproc_start().. 1821 I will return kthread_create() and friends in a while 1822 with implementations that actually create threads, not procs. 1823 Renaming corresponds with version 800002. 1824 182520071010: 1826 RELENG_7 branched. 1827 1828COMMON ITEMS: 1829 1830 General Notes 1831 ------------- 1832 Avoid using make -j when upgrading. While generally safe, there are 1833 sometimes problems using -j to upgrade. If your upgrade fails with 1834 -j, please try again without -j. From time to time in the past there 1835 have been problems using -j with buildworld and/or installworld. This 1836 is especially true when upgrading between "distant" versions (eg one 1837 that cross a major release boundary or several minor releases, or when 1838 several months have passed on the -current branch). 1839 1840 Sometimes, obscure build problems are the result of environment 1841 poisoning. This can happen because the make utility reads its 1842 environment when searching for values for global variables. To run 1843 your build attempts in an "environmental clean room", prefix all make 1844 commands with 'env -i '. See the env(1) manual page for more details. 1845 1846 When upgrading from one major version to another it is generally best 1847 to upgrade to the latest code in the currently installed branch first, 1848 then do an upgrade to the new branch. This is the best-tested upgrade 1849 path, and has the highest probability of being successful. Please try 1850 this approach before reporting problems with a major version upgrade. 1851 1852 When upgrading a live system, having a root shell around before 1853 installing anything can help undo problems. Not having a root shell 1854 around can lead to problems if pam has changed too much from your 1855 starting point to allow continued authentication after the upgrade. 1856 1857 ZFS notes 1858 --------- 1859 When upgrading the boot ZFS pool to a new version, always follow 1860 these two steps: 1861 1862 1.) recompile and reinstall the ZFS boot loader and boot block 1863 (this is part of "make buildworld" and "make installworld") 1864 1865 2.) update the ZFS boot block on your boot drive 1866 1867 The following example updates the ZFS boot block on the first 1868 partition (freebsd-boot) of a GPT partitioned drive ad0: 1869 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0" 1870 1871 Non-boot pools do not need these updates. 1872 1873 To build a kernel 1874 ----------------- 1875 If you are updating from a prior version of FreeBSD (even one just 1876 a few days old), you should follow this procedure. It is the most 1877 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld, 1878 1879 make kernel-toolchain 1880 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE 1881 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE 1882 1883 To test a kernel once 1884 --------------------- 1885 If you just want to boot a kernel once (because you are not sure 1886 if it works, or if you want to boot a known bad kernel to provide 1887 debugging information) run 1888 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel 1889 nextboot -k testkernel 1890 1891 To just build a kernel when you know that it won't mess you up 1892 -------------------------------------------------------------- 1893 This assumes you are already running a CURRENT system. Replace 1894 ${arch} with the architecture of your machine (e.g. "i386", 1895 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc). 1896 1897 cd src/sys/${arch}/conf 1898 config KERNEL_NAME_HERE 1899 cd ../compile/KERNEL_NAME_HERE 1900 make depend 1901 make 1902 make install 1903 1904 If this fails, go to the "To build a kernel" section. 1905 1906 To rebuild everything and install it on the current system. 1907 ----------------------------------------------------------- 1908 # Note: sometimes if you are running current you gotta do more than 1909 # is listed here if you are upgrading from a really old current. 1910 1911 <make sure you have good level 0 dumps> 1912 make buildworld 1913 make kernel KERNCONF=YOUR_KERNEL_HERE 1914 [1] 1915 <reboot in single user> [3] 1916 mergemaster -p [5] 1917 make installworld 1918 mergemaster -i [4] 1919 make delete-old [6] 1920 <reboot> 1921 1922 To cross-install current onto a separate partition 1923 -------------------------------------------------- 1924 # In this approach we use a separate partition to hold 1925 # current's root, 'usr', and 'var' directories. A partition 1926 # holding "/", "/usr" and "/var" should be about 2GB in 1927 # size. 1928 1929 <make sure you have good level 0 dumps> 1930 <boot into -stable> 1931 make buildworld 1932 make buildkernel KERNCONF=YOUR_KERNEL_HERE 1933 <maybe newfs current's root partition> 1934 <mount current's root partition on directory ${CURRENT_ROOT}> 1935 make installworld DESTDIR=${CURRENT_ROOT} 1936 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd 1937 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT} 1938 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd 1939 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition> 1940 <reboot into current> 1941 <do a "native" rebuild/install as described in the previous section> 1942 <maybe install compatibility libraries from ports/misc/compat*> 1943 <reboot> 1944 1945 1946 To upgrade in-place from stable to current 1947 ---------------------------------------------- 1948 <make sure you have good level 0 dumps> 1949 make buildworld [9] 1950 make kernel KERNCONF=YOUR_KERNEL_HERE [8] 1951 [1] 1952 <reboot in single user> [3] 1953 mergemaster -p [5] 1954 make installworld 1955 mergemaster -i [4] 1956 make delete-old [6] 1957 <reboot> 1958 1959 Make sure that you've read the UPDATING file to understand the 1960 tweaks to various things you need. At this point in the life 1961 cycle of current, things change often and you are on your own 1962 to cope. The defaults can also change, so please read ALL of 1963 the UPDATING entries. 1964 1965 Also, if you are tracking -current, you must be subscribed to 1966 freebsd-current@freebsd.org. Make sure that before you update 1967 your sources that you have read and understood all the recent 1968 messages there. If in doubt, please track -stable which has 1969 much fewer pitfalls. 1970 1971 [1] If you have third party modules, such as vmware, you 1972 should disable them at this point so they don't crash your 1973 system on reboot. 1974 1975 [3] From the bootblocks, boot -s, and then do 1976 fsck -p 1977 mount -u / 1978 mount -a 1979 cd src 1980 adjkerntz -i # if CMOS is wall time 1981 Also, when doing a major release upgrade, it is required that 1982 you boot into single user mode to do the installworld. 1983 1984 [4] Note: This step is non-optional. Failure to do this step 1985 can result in a significant reduction in the functionality of the 1986 system. Attempting to do it by hand is not recommended and those 1987 that pursue this avenue should read this file carefully, as well 1988 as the archives of freebsd-current and freebsd-hackers mailing lists 1989 for potential gotchas. The -U option is also useful to consider. 1990 See mergemaster(8) for more information. 1991 1992 [5] Usually this step is a noop. However, from time to time 1993 you may need to do this if you get unknown user in the following 1994 step. It never hurts to do it all the time. You may need to 1995 install a new mergemaster (cd src/usr.sbin/mergemaster && make 1996 install) after the buildworld before this step if you last updated 1997 from current before 20130425 or from -stable before 20130430. 1998 1999 [6] This only deletes old files and directories. Old libraries 2000 can be deleted by "make delete-old-libs", but you have to make 2001 sure that no program is using those libraries anymore. 2002 2003 [8] In order to have a kernel that can run the 4.x binaries needed to 2004 do an installworld, you must include the COMPAT_FREEBSD4 option in 2005 your kernel. Failure to do so may leave you with a system that is 2006 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is 2007 required to run the 5.x binaries on more recent kernels. And so on 2008 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7. 2009 2010 Make sure that you merge any new devices from GENERIC since the 2011 last time you updated your kernel config file. 2012 2013 [9] When checking out sources, you must include the -P flag to have 2014 cvs prune empty directories. 2015 2016 If CPUTYPE is defined in your /etc/make.conf, make sure to use the 2017 "?=" instead of the "=" assignment operator, so that buildworld can 2018 override the CPUTYPE if it needs to. 2019 2020 MAKEOBJDIRPREFIX must be defined in an environment variable, and 2021 not on the command line, or in /etc/make.conf. buildworld will 2022 warn if it is improperly defined. 2023FORMAT: 2024 2025This file contains a list, in reverse chronological order, of major 2026breakages in tracking -current. It is not guaranteed to be a complete 2027list of such breakages, and only contains entries since October 10, 2007. 2028If you need to see UPDATING entries from before that date, you will need 2029to fetch an UPDATING file from an older FreeBSD release. 2030 2031Copyright information: 2032 2033Copyright 1998-2009 M. Warner Losh. All Rights Reserved. 2034 2035Redistribution, publication, translation and use, with or without 2036modification, in full or in part, in any form or format of this 2037document are permitted without further permission from the author. 2038 2039THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR 2040IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 2041WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 2042DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT, 2043INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 2044(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 2045SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2046HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 2047STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 2048IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 2049POSSIBILITY OF SUCH DAMAGE. 2050 2051Contact Warner Losh if you have any questions about your use of 2052this document. 2053 2054$FreeBSD: head/UPDATING 258714 2013-11-28 19:13:05Z rodrigc $ 2055