UPDATING revision 259447
1Updating Information for FreeBSD current users 2 3This file is maintained and copyrighted by M. Warner Losh <imp@freebsd.org>. 4See end of file for further details. For commonly done items, please see the 5COMMON ITEMS: section later in the file. These instructions assume that you 6basically know what you are doing. If not, then please consult the FreeBSD 7handbook: 8 9 http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html 10 11Items affecting the ports and packages system can be found in 12/usr/ports/UPDATING. Please read that file before running portupgrade. 13 14NOTE: FreeBSD has switched from gcc to clang. If you have trouble bootstrapping 15from older versions of FreeBSD, try WITHOUT_CLANG to bootstrap to the tip of 16stable/10, and then rebuild without this option. The bootstrap process from 17older version of current is a bit fragile. 18 1920131216: 20 The behavior of gss_pseudo_random() for the krb5 mechanism 21 has changed, for applications requesting a longer random string 22 than produced by the underlying enctype's pseudo-random() function. 23 In particular, the random string produced from a session key of 24 enctype aes256-cts-hmac-sha1-96 or aes256-cts-hmac-sha1-96 will 25 be different at the 17th octet and later, after this change. 26 The counter used in the PRF+ construction is now encoded as a 27 big-endian integer in accordance with RFC 4402. 28 __FreeBSD_version is bumped to 1000701. 29 3020131031: 31 The default version of mtree is nmtree which is obtained from 32 NetBSD. The output is generally the same, but may vary 33 slightly. If you found you need identical output adding 34 "-F freebsd9" to the command line should do the trick. For the 35 time being, the old mtree is available as fmtree. 36 3720131014: 38 libbsdyml has been renamed to libyaml and moved to /usr/lib/private. 39 This will break ports-mgmt/pkg. Rebuild the port, or upgrade to pkg 40 1.1.4_8 and verify bsdyml not linked in, before running "make 41 delete-old-libs": 42 # make -C /usr/ports/ports-mgmt/pkg build deinstall install clean 43 or 44 # pkg install pkg; ldd /usr/local/sbin/pkg | grep bsdyml 45 4620131010: 47 The rc.d/jail script has been updated to support jail(8) 48 configuration file. The "jail_<jname>_*" rc.conf(5) variables 49 for per-jail configuration are automatically converted to 50 /var/run/jail.<jname>.conf before the jail(8) utility is invoked. 51 This is transparently backward compatible. See below about some 52 incompatibilities and rc.conf(5) manual page for more details. 53 54 These variables are now deprecated in favor of jail(8) configuration 55 file. One can use "rc.d/jail config <jname>" command to generate 56 a jail(8) configuration file in /var/run/jail.<jname>.conf without 57 running the jail(8) utility. The default pathname of the 58 configuration file is /etc/jail.conf and can be specified by 59 using $jail_conf or $jail_<jname>_conf variables. 60 61 Please note that jail_devfs_ruleset accepts an integer at 62 this moment. Please consider to rewrite the ruleset name 63 with an integer. 64 6520130930: 66 BIND has been removed from the base system. If all you need 67 is a local resolver, simply enable and start the local_unbound 68 service instead. Otherwise, several versions of BIND are 69 available in the ports tree. The dns/bind99 port is one example. 70 71 With this change, nslookup(1) and dig(1) are no longer in the base 72 system. Users should instead use host(1) and drill(1) which are 73 in the base system. Alternatively, nslookup and dig can 74 be obtained by installing the dns/bind-tools port. 75 7620130916: 77 With the addition of unbound(8), a new unbound user is now 78 required during installworld. "mergemaster -p" can be used to 79 add the user prior to installworld, as documented in the handbook. 80 8120130911: 82 OpenSSH is now built with DNSSEC support, and will by default 83 silently trust signed SSHFP records. This can be controlled with 84 the VerifyHostKeyDNS client configuration setting. DNSSEC support 85 can be disabled entirely with the WITHOUT_LDNS option in src.conf. 86 8720130906: 88 The GNU Compiler Collection and C++ standard library (libstdc++) 89 are no longer built by default on platforms where clang is the system 90 compiler. You can enable them with the WITH_GCC and WITH_GNUCXX 91 options in src.conf. 92 9320130905: 94 The PROCDESC kernel option is now part of the GENERIC kernel 95 configuration and is required for the rwhod(8) to work. 96 If you are using custom kernel configuration, you should include 97 'options PROCDESC'. 98 9920130905: 100 The API and ABI related to the Capsicum framework was modified 101 in backward incompatible way. The userland libraries and programs 102 have to be recompiled to work with the new kernel. This includes the 103 following libraries and programs, but the whole buildworld is 104 advised: libc, libprocstat, dhclient, tcpdump, hastd, hastctl, 105 kdump, procstat, rwho, rwhod, uniq. 106 10720130903: 108 AES-NI intrinsic support has been added to gcc. The AES-NI module 109 has been updated to use this support. A new gcc is required to build 110 the aesni module on both i386 and amd64. 111 11220130821: 113 The PADLOCK_RNG and RDRAND_RNG kernel options are now devices. 114 Thus "device padlock_rng" and "device rdrand_rng" should be 115 used instead of "options PADLOCK_RNG" & "options RDRAND_RNG". 116 11720130813: 118 WITH_ICONV has been split into two feature sets. WITH_ICONV now 119 enables just the iconv* functionality and is now on by default. 120 WITH_LIBICONV_COMPAT enables the libiconv api and link time 121 compatability. Set WITHOUT_ICONV to build the old way. 122 If you have been using WITH_ICONV before, you will very likely 123 need to turn on WITH_LIBICONV_COMPAT. 124 12520130806: 126 INVARIANTS option now enables DEBUG for code with OpenSolaris and 127 Illumos origin, including ZFS. If you have INVARIANTS in your 128 kernel configuration, then there is no need to set DEBUG or ZFS_DEBUG 129 explicitly. 130 DEBUG used to enable witness(9) tracking of OpenSolaris (mostly ZFS) 131 locks if WITNESS option was set. Because that generated a lot of 132 witness(9) reports and all of them were believed to be false 133 positives, this is no longer done. New option OPENSOLARIS_WITNESS 134 can be used to achieve the previous behavior. 135 13620130806: 137 Timer values in IPv6 data structures now use time_uptime instead 138 of time_second. Although this is not a user-visible functional 139 change, userland utilities which directly use them---ndp(8), 140 rtadvd(8), and rtsold(8) in the base system---need to be updated 141 to r253970 or later. 142 14320130802: 144 find -delete can now delete the pathnames given as arguments, 145 instead of only files found below them or if the pathname did 146 not contain any slashes. Formerly, the following error message 147 would result: 148 149 find: -delete: <path>: relative path potentially not safe 150 151 Deleting the pathnames given as arguments can be prevented 152 without error messages using -mindepth 1 or by changing 153 directory and passing "." as argument to find. This works in the 154 old as well as the new version of find. 155 15620130726: 157 Behavior of devfs rules path matching has been changed. 158 Pattern is now always matched against fully qualified devfs 159 path and slash characters must be explicitly matched by 160 slashes in pattern (FNM_PATHNAME). Rulesets involving devfs 161 subdirectories must be reviewed. 162 16320130716: 164 The default ARM ABI has changed to the ARM EABI. The old ABI is 165 incompatible with the ARM EABI and all programs and modules will 166 need to be rebuilt to work with a new kernel. 167 168 To keep using the old ABI ensure the WITHOUT_ARM_EABI knob is set. 169 170 NOTE: Support for the old ABI will be removed in the future and 171 users are advised to upgrade. 172 17320130709: 174 pkg_install has been disconnected from the build if you really need it 175 you should add WITH_PKGTOOLS in your src.conf(5). 176 17720130709: 178 Most of network statistics structures were changed to be able 179 keep 64-bits counters. Thus all tools, that work with networking 180 statistics, must be rebuilt (netstat(1), bsnmpd(1), etc.) 181 18220130629: 183 Fix targets that run multiple make's to use && rather than ; 184 so that subsequent steps depend on success of previous. 185 186 NOTE: if building 'universe' with -j* on stable/8 or stable/9 187 it would be better to start the build using bmake, to avoid 188 overloading the machine. 189 19020130618: 191 Fix a bug that allowed a tracing process (e.g. gdb) to write 192 to a memory-mapped file in the traced process's address space 193 even if neither the traced process nor the tracing process had 194 write access to that file. 195 19620130615: 197 CVS has been removed from the base system. An exact copy 198 of the code is available from the devel/cvs port. 199 20020130613: 201 Some people report the following error after the switch to bmake: 202 203 make: illegal option -- J 204 usage: make [-BPSXeiknpqrstv] [-C directory] [-D variable] 205 ... 206 *** [buildworld] Error code 2 207 208 this likely due to an old instance of make in 209 ${MAKEPATH} (${MAKEOBJDIRPREFIX}${.CURDIR}/make.${MACHINE}) 210 which src/Makefile will use that blindly, if it exists, so if 211 you see the above error: 212 213 rm -rf `make -V MAKEPATH` 214 215 should resolve it. 216 21720130516: 218 Use bmake by default. 219 Whereas before one could choose to build with bmake via 220 -DWITH_BMAKE one must now use -DWITHOUT_BMAKE to use the old 221 make. The goal is to remove these knobs for 10-RELEASE. 222 223 It is worth noting that bmake (like gmake) treats the command 224 line as the unit of failure, rather than statements within the 225 command line. Thus '(cd some/where && dosomething)' is safer 226 than 'cd some/where; dosomething'. The '()' allows consistent 227 behavior in parallel build. 228 22920130429: 230 Fix a bug that allows NFS clients to issue READDIR on files. 231 23220130426: 233 The WITHOUT_IDEA option has been removed because 234 the IDEA patent expired. 235 23620130426: 237 The sysctl which controls TRIM support under ZFS has been renamed 238 from vfs.zfs.trim_disable -> vfs.zfs.trim.enabled and has been 239 enabled by default. 240 24120130425: 242 The mergemaster command now uses the default MAKEOBJDIRPREFIX 243 rather than creating it's own in the temporary directory in 244 order allow access to bootstrapped versions of tools such as 245 install and mtree. When upgrading from version of FreeBSD where 246 the install command does not support -l, you will need to 247 install a new mergemaster command if mergemaster -p is required. 248 This can be accomplished with the command (cd src/usr.sbin/mergemaster 249 && make install). 250 25120130404: 252 Legacy ATA stack, disabled and replaced by new CAM-based one since 253 FreeBSD 9.0, completely removed from the sources. Kernel modules 254 atadisk and atapi*, user-level tools atacontrol and burncd are 255 removed. Kernel option `options ATA_CAM` is now permanently enabled 256 and removed. 257 25820130319: 259 SOCK_CLOEXEC and SOCK_NONBLOCK flags have been added to socket(2) 260 and socketpair(2). Software, in particular Kerberos, may 261 automatically detect and use these during building. The resulting 262 binaries will not work on older kernels. 263 26420130308: 265 CTL_DISABLE has also been added to the sparc64 GENERIC (for further 266 information, see the respective 20130304 entry). 267 26820130304: 269 Recent commits to callout(9) changed the size of struct callout, 270 so the KBI is probably heavily disturbed. Also, some functions 271 in callout(9)/sleep(9)/sleepqueue(9)/condvar(9) KPIs were replaced 272 by macros. Every kernel module using it won't load, so rebuild 273 is requested. 274 275 The ctl device has been re-enabled in GENERIC for i386 and amd64, 276 but does not initialize by default (because of the new CTL_DISABLE 277 option) to save memory. To re-enable it, remove the CTL_DISABLE 278 option from the kernel config file or set kern.cam.ctl.disable=0 279 in /boot/loader.conf. 280 28120130301: 282 The ctl device has been disabled in GENERIC for i386 and amd64. 283 This was done due to the extra memory being allocated at system 284 initialisation time by the ctl driver which was only used if 285 a CAM target device was created. This makes a FreeBSD system 286 unusable on 128MB or less of RAM. 287 28820130208: 289 A new compression method (lz4) has been merged to -HEAD. Please 290 refer to zpool-features(7) for more information. 291 292 Please refer to the "ZFS notes" section of this file for information 293 on upgrading boot ZFS pools. 294 29520130129: 296 A BSD-licensed patch(1) variant has been added and is installed 297 as bsdpatch, being the GNU version the default patch. 298 To inverse the logic and use the BSD-licensed one as default, 299 while having the GNU version installed as gnupatch, rebuild 300 and install world with the WITH_BSD_PATCH knob set. 301 30220130121: 303 Due to the use of the new -l option to install(1) during build 304 and install, you must take care not to directly set the INSTALL 305 make variable in your /etc/make.conf, /etc/src.conf, or on the 306 command line. If you wish to use the -C flag for all installs 307 you may be able to add INSTALL+=-C to /etc/make.conf or 308 /etc/src.conf. 309 31020130118: 311 The install(1) option -M has changed meaning and now takes an 312 argument that is a file or path to append logs to. In the 313 unlikely event that -M was the last option on the command line 314 and the command line contained at least two files and a target 315 directory the first file will have logs appended to it. The -M 316 option served little practical purpose in the last decade so its 317 use is expected to be extremely rare. 318 31920121223: 320 After switching to Clang as the default compiler some users of ZFS 321 on i386 systems started to experience stack overflow kernel panics. 322 Please consider using 'options KSTACK_PAGES=4' in such configurations. 323 32420121222: 325 GEOM_LABEL now mangles label names read from file system metadata. 326 Mangling affect labels containing spaces, non-printable characters, 327 '%' or '"'. Device names in /etc/fstab and other places may need to 328 be updated. 329 33020121217: 331 By default, only the 10 most recent kernel dumps will be saved. To 332 restore the previous behaviour (no limit on the number of kernel dumps 333 stored in the dump directory) add the following line to /etc/rc.conf: 334 335 savecore_flags="" 336 33720121201: 338 With the addition of auditdistd(8), a new auditdistd user is now 339 required during installworld. "mergemaster -p" can be used to 340 add the user prior to installworld, as documented in the handbook. 341 34220121117: 343 The sin6_scope_id member variable in struct sockaddr_in6 is now 344 filled by the kernel before passing the structure to the userland via 345 sysctl or routing socket. This means the KAME-specific embedded scope 346 id in sin6_addr.s6_addr[2] is always cleared in userland application. 347 This behavior can be controlled by net.inet6.ip6.deembed_scopeid. 348 __FreeBSD_version is bumped to 1000025. 349 35020121105: 351 On i386 and amd64 systems WITH_CLANG_IS_CC is now the default. 352 This means that the world and kernel will be compiled with clang 353 and that clang will be installed as /usr/bin/cc, /usr/bin/c++, 354 and /usr/bin/cpp. To disable this behavior and revert to building 355 with gcc, compile with WITHOUT_CLANG_IS_CC. Really old versions 356 of current may need to bootstrap WITHOUT_CLANG first if the clang 357 build fails (its compatibility window doesn't extend to the 9 stable 358 branch point). 359 36020121102: 361 The IPFIREWALL_FORWARD kernel option has been removed. Its 362 functionality now turned on by default. 363 36420121023: 365 The ZERO_COPY_SOCKET kernel option has been removed and 366 split into SOCKET_SEND_COW and SOCKET_RECV_PFLIP. 367 NB: SOCKET_SEND_COW uses the VM page based copy-on-write 368 mechanism which is not safe and may result in kernel crashes. 369 NB: The SOCKET_RECV_PFLIP mechanism is useless as no current 370 driver supports disposeable external page sized mbuf storage. 371 Proper replacements for both zero-copy mechanisms are under 372 consideration and will eventually lead to complete removal 373 of the two kernel options. 374 37520121023: 376 The IPv4 network stack has been converted to network byte 377 order. The following modules need to be recompiled together 378 with kernel: carp(4), divert(4), gif(4), siftr(4), gre(4), 379 pf(4), ipfw(4), ng_ipfw(4), stf(4). 380 38120121022: 382 Support for non-MPSAFE filesystems was removed from VFS. The 383 VFS_VERSION was bumped, all filesystem modules shall be 384 recompiled. 385 38620121018: 387 All the non-MPSAFE filesystems have been disconnected from 388 the build. The full list includes: codafs, hpfs, ntfs, nwfs, 389 portalfs, smbfs, xfs. 390 39120121016: 392 The interface cloning API and ABI has changed. The following 393 modules need to be recompiled together with kernel: 394 ipfw(4), pfsync(4), pflog(4), usb(4), wlan(4), stf(4), 395 vlan(4), disc(4), edsc(4), if_bridge(4), gif(4), tap(4), 396 faith(4), epair(4), enc(4), tun(4), if_lagg(4), gre(4). 397 39820121015: 399 The sdhci driver was split in two parts: sdhci (generic SD Host 400 Controller logic) and sdhci_pci (actual hardware driver). 401 No kernel config modifications are required, but if you 402 load sdhc as a module you must switch to sdhci_pci instead. 403 40420121014: 405 Import the FUSE kernel and userland support into base system. 406 40720121013: 408 The GNU sort(1) program has been removed since the BSD-licensed 409 sort(1) has been the default for quite some time and no serious 410 problems have been reported. The corresponding WITH_GNU_SORT 411 knob has also gone. 412 41320121006: 414 The pfil(9) API/ABI for AF_INET family has been changed. Packet 415 filtering modules: pf(4), ipfw(4), ipfilter(4) need to be recompiled 416 with new kernel. 417 41820121001: 419 The net80211(4) ABI has been changed to allow for improved driver 420 PS-POLL and power-save support. All wireless drivers need to be 421 recompiled to work with the new kernel. 422 42320120913: 424 The random(4) support for the VIA hardware random number 425 generator (`PADLOCK') is no longer enabled unconditionally. 426 Add the padlock_rng device in the custom kernel config if 427 needed. The GENERIC kernels on i386 and amd64 do include the 428 device, so the change only affects the custom kernel 429 configurations. 430 43120120908: 432 The pf(4) packet filter ABI has been changed. pfctl(8) and 433 snmp_pf module need to be recompiled to work with new kernel. 434 43520120828: 436 A new ZFS feature flag "com.delphix:empty_bpobj" has been merged 437 to -HEAD. Pools that have empty_bpobj in active state can not be 438 imported read-write with ZFS implementations that do not support 439 this feature. For more information read the zpool-features(5) 440 manual page. 441 44220120727: 443 The sparc64 ZFS loader has been changed to no longer try to auto- 444 detect ZFS providers based on diskN aliases but now requires these 445 to be explicitly listed in the OFW boot-device environment variable. 446 44720120712: 448 The OpenSSL has been upgraded to 1.0.1c. Any binaries requiring 449 libcrypto.so.6 or libssl.so.6 must be recompiled. Also, there are 450 configuration changes. Make sure to merge /etc/ssl/openssl.cnf. 451 45220120712: 453 The following sysctls and tunables have been renamed for consistency 454 with other variables: 455 kern.cam.da.da_send_ordered -> kern.cam.da.send_ordered 456 kern.cam.ada.ada_send_ordered -> kern.cam.ada.send_ordered 457 45820120628: 459 The sort utility has been replaced with BSD sort. For now, GNU sort 460 is also available as "gnusort" or the default can be set back to 461 GNU sort by setting WITH_GNU_SORT. In this case, BSD sort will be 462 installed as "bsdsort". 463 46420120611: 465 A new version of ZFS (pool version 5000) has been merged to -HEAD. 466 Starting with this version the old system of ZFS pool versioning 467 is superseded by "feature flags". This concept enables forward 468 compatibility against certain future changes in functionality of ZFS 469 pools. The first read-only compatible "feature flag" for ZFS pools 470 is named "com.delphix:async_destroy". For more information 471 read the new zpool-features(5) manual page. 472 Please refer to the "ZFS notes" section of this file for information 473 on upgrading boot ZFS pools. 474 47520120417: 476 The malloc(3) implementation embedded in libc now uses sources imported 477 as contrib/jemalloc. The most disruptive API change is to 478 /etc/malloc.conf. If your system has an old-style /etc/malloc.conf, 479 delete it prior to installworld, and optionally re-create it using the 480 new format after rebooting. See malloc.conf(5) for details 481 (specifically the TUNING section and the "opt.*" entries in the MALLCTL 482 NAMESPACE section). 483 48420120328: 485 Big-endian MIPS TARGET_ARCH values no longer end in "eb". mips64eb 486 is now spelled mips64. mipsn32eb is now spelled mipsn32. mipseb is 487 now spelled mips. This is to aid compatibility with third-party 488 software that expects this naming scheme in uname(3). Little-endian 489 settings are unchanged. If you are updating a big-endian mips64 machine 490 from before this change, you may need to set MACHINE_ARCH=mips64 in 491 your environment before the new build system will recognize your machine. 492 49320120306: 494 Disable by default the option VFS_ALLOW_NONMPSAFE for all supported 495 platforms. 496 49720120229: 498 Now unix domain sockets behave "as expected" on nullfs(5). Previously 499 nullfs(5) did not pass through all behaviours to the underlying layer, 500 as a result if we bound to a socket on the lower layer we could connect 501 only to the lower path; if we bound to the upper layer we could connect 502 only to the upper path. The new behavior is one can connect to both the 503 lower and the upper paths regardless what layer path one binds to. 504 50520120211: 506 The getifaddrs upgrade path broken with 20111215 has been restored. 507 If you have upgraded in between 20111215 and 20120209 you need to 508 recompile libc again with your kernel. You still need to recompile 509 world to be able to configure CARP but this restriction already 510 comes from 20111215. 511 51220120114: 513 The set_rcvar() function has been removed from /etc/rc.subr. All 514 base and ports rc.d scripts have been updated, so if you have a 515 port installed with a script in /usr/local/etc/rc.d you can either 516 hand-edit the rcvar= line, or reinstall the port. 517 518 An easy way to handle the mass-update of /etc/rc.d: 519 rm /etc/rc.d/* && mergemaster -i 520 52120120109: 522 panic(9) now stops other CPUs in the SMP systems, disables interrupts 523 on the current CPU and prevents other threads from running. 524 This behavior can be reverted using the kern.stop_scheduler_on_panic 525 tunable/sysctl. 526 The new behavior can be incompatible with kern.sync_on_panic. 527 52820111215: 529 The carp(4) facility has been changed significantly. Configuration 530 of the CARP protocol via ifconfig(8) has changed, as well as format 531 of CARP events submitted to devd(8) has changed. See manual pages 532 for more information. The arpbalance feature of carp(4) is currently 533 not supported anymore. 534 535 Size of struct in_aliasreq, struct in6_aliasreq has changed. User 536 utilities using SIOCAIFADDR, SIOCAIFADDR_IN6, e.g. ifconfig(8), 537 need to be recompiled. 538 53920111122: 540 The acpi_wmi(4) status device /dev/wmistat has been renamed to 541 /dev/wmistat0. 542 54320111108: 544 The option VFS_ALLOW_NONMPSAFE option has been added in order to 545 explicitely support non-MPSAFE filesystems. 546 It is on by default for all supported platform at this present 547 time. 548 54920111101: 550 The broken amd(4) driver has been replaced with esp(4) in the amd64, 551 i386 and pc98 GENERIC kernel configuration files. 552 55320110930: 554 sysinstall has been removed 555 55620110923: 557 The stable/9 branch created in subversion. This corresponds to the 558 RELENG_9 branch in CVS. 559 56020110913: 561 This commit modifies vfs_register() so that it uses a hash 562 calculation to set vfc_typenum, which is enabled by default. 563 The first time a system is booted after this change, the 564 vfc_typenum values will change for all file systems. The 565 main effect of this is a change to the NFS server file handles 566 for file systems that use vfc_typenum in their fsid, such as ZFS. 567 It will, however, prevent vfc_typenum from changing when file 568 systems are loaded in a different order for subsequent reboots. 569 To disable this, you can set vfs.typenumhash=0 in /boot/loader.conf 570 until you are ready to remount all NFS clients after a reboot. 571 57220110828: 573 Bump the shared library version numbers for libraries that 574 do not use symbol versioning, have changed the ABI compared 575 to stable/8 and which shared library version was not bumped. 576 Done as part of 9.0-RELEASE cycle. 577 57820110815: 579 During the merge of Capsicum features, the fget(9) KPI was modified. 580 This may require the rebuilding of out-of-tree device drivers -- 581 issues have been reported specifically with the nVidia device driver. 582 __FreeBSD_version is bumped to 900041. 583 584 Also, there is a period between 20110811 and 20110814 where the 585 special devices /dev/{stdin,stdout,stderr} did not work correctly. 586 Building world from a kernel during that window may not work. 587 58820110628: 589 The packet filter (pf) code has been updated to OpenBSD 4.5. 590 You need to update userland tools to be in sync with kernel. 591 This update breaks backward compatibility with earlier pfsync(4) 592 versions. Care must be taken when updating redundant firewall setups. 593 59420110608: 595 The following sysctls and tunables are retired on x86 platforms: 596 machdep.hlt_cpus 597 machdep.hlt_logical_cpus 598 The following sysctl is retired: 599 machdep.hyperthreading_allowed 600 The sysctls were supposed to provide a way to dynamically offline and 601 online selected CPUs on x86 platforms, but the implementation has not 602 been reliable especially with SCHED_ULE scheduler. 603 machdep.hyperthreading_allowed tunable is still available to ignore 604 hyperthreading CPUs at OS level. 605 Individual CPUs can be disabled using hint.lapic.X.disabled tunable, 606 where X is an APIC ID of a CPU. Be advised, though, that disabling 607 CPUs in non-uniform fashion will result in non-uniform topology and 608 may lead to sub-optimal system performance with SCHED_ULE, which is 609 a default scheduler. 610 61120110607: 612 cpumask_t type is retired and cpuset_t is used in order to describe 613 a mask of CPUs. 614 61520110531: 616 Changes to ifconfig(8) for dynamic address family detection mandate 617 that you are running a kernel of 20110525 or later. Make sure to 618 follow the update procedure to boot a new kernel before installing 619 world. 620 62120110513: 622 Support for sun4v architecture is officially dropped 623 62420110503: 625 Several KPI breaking changes have been committed to the mii(4) layer, 626 the PHY drivers and consequently some Ethernet drivers using mii(4). 627 This means that miibus.ko and the modules of the affected Ethernet 628 drivers need to be recompiled. 629 630 Note to kernel developers: Given that the OUI bit reversion problem 631 was fixed as part of these changes all mii(4) commits related to OUIs, 632 i.e. to sys/dev/mii/miidevs, PHY driver probing and vendor specific 633 handling, no longer can be merged verbatim to stable/8 and previous 634 branches. 635 63620110430: 637 Users of the Atheros AR71xx SoC code now need to add 'device ar71xx_pci' 638 into their kernel configurations along with 'device pci'. 639 64020110427: 641 The default NFS client is now the new NFS client, so fstype "newnfs" 642 is now "nfs" and the regular/old NFS client is now fstype "oldnfs". 643 Although mounts via fstype "nfs" will usually work without userland 644 changes, it is recommended that the mount(8) and mount_nfs(8) 645 commands be rebuilt from sources and that a link to mount_nfs called 646 mount_oldnfs be created. The new client is compiled into the 647 kernel with "options NFSCL" and this is needed for diskless root 648 file systems. The GENERIC kernel configs have been changed to use 649 NFSCL and NFSD (the new server) instead of NFSCLIENT and NFSSERVER. 650 To use the regular/old client, you can "mount -t oldnfs ...". For 651 a diskless root file system, you must also include a line like: 652 653 vfs.root.mountfrom="oldnfs:" 654 655 in the boot/loader.conf on the root fs on the NFS server to make 656 a diskless root fs use the old client. 657 65820110424: 659 The GENERIC kernels for all architectures now default to the new 660 CAM-based ATA stack. It means that all legacy ATA drivers were 661 removed and replaced by respective CAM drivers. If you are using 662 ATA device names in /etc/fstab or other places, make sure to update 663 them respectively (adX -> adaY, acdX -> cdY, afdX -> daY, astX -> saY, 664 where 'Y's are the sequential numbers starting from zero for each type 665 in order of detection, unless configured otherwise with tunables, 666 see cam(4)). There will be symbolic links created in /dev/ to map 667 old adX devices to the respective adaY. They should provide basic 668 compatibility for file systems mounting in most cases, but they do 669 not support old user-level APIs and do not have respective providers 670 in GEOM. Consider using updated management tools with new device names. 671 672 It is possible to load devices ahci, ata, siis and mvs as modules, 673 but option ATA_CAM should remain in kernel configuration to make ata 674 module work as CAM driver supporting legacy ATA controllers. Device ata 675 still can be used in modular fashion (atacore + ...). Modules atadisk 676 and atapi* are not used and won't affect operation in ATA_CAM mode. 677 Note that to use CAM-based ATA kernel should include CAM devices 678 scbus, pass, da (or explicitly ada), cd and optionally others. All of 679 them are parts of the cam module. 680 681 ataraid(4) functionality is now supported by the RAID GEOM class. 682 To use it you can load geom_raid kernel module and use graid(8) tool 683 for management. Instead of /dev/arX device names, use /dev/raid/rX. 684 685 No kernel config options or code have been removed, so if a problem 686 arises, please report it and optionally revert to the old ATA stack. 687 In order to do it you can remove from the kernel config: 688 options ATA_CAM 689 device ahci 690 device mvs 691 device siis 692 , and instead add back: 693 device atadisk # ATA disk drives 694 device ataraid # ATA RAID drives 695 device atapicd # ATAPI CDROM drives 696 device atapifd # ATAPI floppy drives 697 device atapist # ATAPI tape drives 698 69920110423: 700 The default NFS server has been changed to the new server, which 701 was referred to as the experimental server. If you need to switch 702 back to the old NFS server, you must now put the "-o" option on 703 both the mountd and nfsd commands. This can be done using the 704 mountd_flags and nfs_server_flags rc.conf variables until an 705 update to the rc scripts is committed, which is coming soon. 706 70720110418: 708 The GNU Objective-C runtime library (libobjc), and other Objective-C 709 related components have been removed from the base system. If you 710 require an Objective-C library, please use one of the available ports. 711 71220110331: 713 ath(4) has been split into bus- and device- modules. if_ath contains 714 the HAL, the TX rate control and the network device code. if_ath_pci 715 contains the PCI bus glue. For Atheros MIPS embedded systems, if_ath_ahb 716 contains the AHB glue. Users need to load both if_ath_pci and if_ath 717 in order to use ath on everything else. 718 719 TO REPEAT: if_ath_ahb is not needed for normal users. Normal users only 720 need to load if_ath and if_ath_pci for ath(4) operation. 721 72220110314: 723 As part of the replacement of sysinstall, the process of building 724 release media has changed significantly. For details, please re-read 725 release(7), which has been updated to reflect the new build process. 726 72720110218: 728 GNU binutils 2.17.50 (as of 2007-07-03) has been merged to -HEAD. This 729 is the last available version under GPLv2. It brings a number of new 730 features, such as support for newer x86 CPU's (with SSE-3, SSSE-3, SSE 731 4.1 and SSE 4.2), better support for powerpc64, a number of new 732 directives, and lots of other small improvements. See the ChangeLog 733 file in contrib/binutils for the full details. 734 73520110218: 736 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868 737 compliant, and will now use half of hash for authentication. 738 This will break interoperability with all stacks (including all 739 actual FreeBSD versions) who implement 740 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for 741 authentication). 742 The only workaround with such peers is to use another HMAC 743 algorithm for IPsec ("phase 2") authentication. 744 74520110207: 746 Remove the uio_yield prototype and symbol. This function has 747 been misnamed since it was introduced and should not be 748 globally exposed with this name. The equivalent functionality 749 is now available using kern_yield(curthread->td_user_pri). 750 The function remains undocumented. 751 75220110112: 753 A SYSCTL_[ADD_]UQUAD was added for unsigned uint64_t pointers, 754 symmetric with the existing SYSCTL_[ADD_]QUAD. Type checking 755 for scalar sysctls is defined but disabled. Code that needs 756 UQUAD to pass the type checking that must compile on older 757 systems where the define is not present can check against 758 __FreeBSD_version >= 900030. 759 760 The system dialog(1) has been replaced with a new version previously 761 in ports as devel/cdialog. dialog(1) is mostly command-line compatible 762 with the previous version, but the libdialog associated with it has 763 a largely incompatible API. As such, the original version of libdialog 764 will be kept temporarily as libodialog, until its base system consumers 765 are replaced or updated. Bump __FreeBSD_version to 900030. 766 76720110103: 768 If you are trying to run make universe on a -stable system, and you get 769 the following warning: 770 "Makefile", line 356: "Target architecture for i386/conf/GENERIC 771 unknown. config(8) likely too old." 772 or something similar to it, then you must upgrade your -stable system 773 to 8.2-Release or newer (really, any time after r210146 7/15/2010 in 774 stable/8) or build the config from the latest stable/8 branch and 775 install it on your system. 776 777 Prior to this date, building a current universe on 8-stable system from 778 between 7/15/2010 and 1/2/2011 would result in a weird shell parsing 779 error in the first kernel build phase. A new config on those old 780 systems will fix that problem for older versions of -current. 781 78220101228: 783 The TCP stack has been modified to allow Khelp modules to interact with 784 it via helper hook points and store per-connection data in the TCP 785 control block. Bump __FreeBSD_version to 900029. User space tools that 786 rely on the size of struct tcpcb in tcp_var.h (e.g. sockstat) need to 787 be recompiled. 788 78920101114: 790 Generic IEEE 802.3 annex 31B full duplex flow control support has been 791 added to mii(4) and bge(4), bce(4), msk(4), nfe(4) and stge(4) along 792 with brgphy(4), e1000phy(4) as well as ip1000phy() have been converted 793 to take advantage of it instead of using custom implementations. This 794 means that these drivers now no longer unconditionally advertise 795 support for flow control but only do so if flow control is a selected 796 media option. This was implemented in the generic support that way in 797 order to allow flow control to be switched on and off via ifconfig(8) 798 with the PHY specific default to typically off in order to protect 799 from unwanted effects. Consequently, if you used flow control with 800 one of the above mentioned drivers you now need to explicitly enable 801 it, for example via: 802 ifconfig bge0 media auto mediaopt flowcontrol 803 804 Along with the above mentioned changes generic support for setting 805 1000baseT master mode also has been added and brgphy(4), ciphy(4), 806 e1000phy(4) as well as ip1000phy(4) have been converted to take 807 advantage of it. This means that these drivers now no longer take the 808 link0 parameter for selecting master mode but the master media option 809 has to be used instead, for example like in the following: 810 ifconfig bge0 media 1000baseT mediaopt full-duplex,master 811 812 Selection of master mode now is also available with all other PHY 813 drivers supporting 1000baseT. 814 81520101111: 816 The TCP stack has received a significant update to add support for 817 modularised congestion control and generally improve the clarity of 818 congestion control decisions. Bump __FreeBSD_version to 900025. User 819 space tools that rely on the size of struct tcpcb in tcp_var.h (e.g. 820 sockstat) need to be recompiled. 821 82220101002: 823 The man(1) utility has been replaced by a new version that no longer 824 uses /etc/manpath.config. Please consult man.conf(5) for how to 825 migrate local entries to the new format. 826 82720100928: 828 The copyright strings printed by login(1) and sshd(8) at the time of a 829 new connection have been removed to follow other operating systems and 830 upstream sshd. 831 83220100915: 833 A workaround for a fixed ld bug has been removed in kernel code, 834 so make sure that your system ld is built from sources after 835 revision 210245 from 2010-07-19 (r211583 if building head kernel 836 on stable/8, r211584 for stable/7; both from 2010-08-21). 837 A symptom of incorrect ld version is different addresses for 838 set_pcpu section and __start_set_pcpu symbol in kernel and/or modules. 839 84020100913: 841 The $ipv6_prefer variable in rc.conf(5) has been split into 842 $ip6addrctl_policy and $ipv6_activate_all_interfaces. 843 844 The $ip6addrctl_policy is a variable to choose a pre-defined 845 address selection policy set by ip6addrctl(8). A value 846 "ipv4_prefer", "ipv6_prefer" or "AUTO" can be specified. The 847 default is "AUTO". 848 849 The $ipv6_activate_all_interfaces specifies whether IFDISABLED 850 flag (see an entry of 20090926) is set on an interface with no 851 corresponding $ifconfig_IF_ipv6 line. The default is "NO" for 852 security reason. If you want IPv6 link-local address on all 853 interfaces by default, set this to "YES". 854 855 The old ipv6_prefer="YES" is equivalent to 856 ipv6_activate_all_interfaces="YES" and 857 ip6addrctl_policy="ipv6_prefer". 858 85920100913: 860 DTrace has grown support for userland tracing. Due to this, DTrace is 861 now i386 and amd64 only. 862 dtruss(1) is now installed by default on those systems and a new 863 kernel module is needed for userland tracing: fasttrap. 864 No changes to your kernel config file are necessary to enable 865 userland tracing, but you might consider adding 'STRIP=' and 866 'CFLAGS+=-fno-omit-frame-pointer' to your make.conf if you want 867 to have informative userland stack traces in DTrace (ustack). 868 86920100725: 870 The acpi_aiboost(4) driver has been removed in favor of the new 871 aibs(4) driver. You should update your kernel configuration file. 872 87320100722: 874 BSD grep has been imported to the base system and it is built by 875 default. It is completely BSD licensed, highly GNU-compatible, uses 876 less memory than its GNU counterpart and has a small codebase. 877 However, it is slower than its GNU counterpart, which is mostly 878 noticeable for larger searches, for smaller ones it is measurable 879 but not significant. The reason is complex, the most important factor 880 is that we lack a modern and efficient regex library and GNU 881 overcomes this by optimizing the searches internally. Future work 882 on improving the regex performance is planned, for the meantime, 883 users that need better performance, can build GNU grep instead by 884 setting the WITH_GNU_GREP knob. 885 88620100713: 887 Due to the import of powerpc64 support, all existing powerpc kernel 888 configuration files must be updated with a machine directive like this: 889 machine powerpc powerpc 890 891 In addition, an updated config(8) is required to build powerpc kernels 892 after this change. 893 89420100713: 895 A new version of ZFS (version 15) has been merged to -HEAD. 896 This version uses a python library for the following subcommands: 897 zfs allow, zfs unallow, zfs groupspace, zfs userspace. 898 For full functionality of these commands the following port must 899 be installed: sysutils/py-zfs 900 90120100429: 902 'vm_page's are now hashed by physical address to an array of mutexes. 903 Currently this is only used to serialize access to hold_count. Over 904 time the page queue mutex will be peeled away. This changes the size 905 of pmap on every architecture. And requires all callers of vm_page_hold 906 and vm_page_unhold to be updated. 907 90820100402: 909 WITH_CTF can now be specified in src.conf (not recommended, there 910 are some problems with static executables), make.conf (would also 911 affect ports which do not use GNU make and do not override the 912 compile targets) or in the kernel config (via "makeoptions 913 WITH_CTF=yes"). 914 When WITH_CTF was specified there before this was silently ignored, 915 so make sure that WITH_CTF is not used in places which could lead 916 to unwanted behavior. 917 91820100311: 919 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32 920 to allow 32-bit compatibility on non-x86 platforms. All kernel 921 configurations on amd64 and ia64 platforms using these options must 922 be modified accordingly. 923 92420100113: 925 The utmp user accounting database has been replaced with utmpx, 926 the user accounting interface standardized by POSIX. 927 Unfortunately the semantics of utmp and utmpx don't match, 928 making it practically impossible to support both interfaces. 929 The user accounting database is used by tools like finger(1), 930 last(1), talk(1), w(1) and ac(8). 931 932 All applications in the base system use utmpx. This means only 933 local binaries (e.g. from the ports tree) may still use these 934 utmp database files. These applications must be rebuilt to make 935 use of utmpx. 936 937 After the system has been upgraded, it is safe to remove the old 938 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*), 939 assuming their contents is of no importance anymore. Old wtmp 940 databases can only be used by last(1) and ac(8) after they have 941 been converted to the new format using wtmpcvt(1). 942 94320100108: 944 Introduce the kernel thread "deadlock resolver" (which can be enabled 945 via the DEADLKRES option, see NOTES for more details) and the 946 sleepq_type() function for sleepqueues. 947 94820091202: 949 The rc.firewall and rc.firewall6 were unified, and 950 rc.firewall6 and rc.d/ip6fw were removed. 951 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc 952 variables are obsoleted. Instead, the following new rc 953 variables are added to rc.d/ipfw: 954 955 firewall_client_net_ipv6, firewall_simple_iif_ipv6, 956 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6, 957 firewall_simple_onet_ipv6, firewall_trusted_ipv6 958 959 The meanings correspond to the relevant IPv4 variables. 960 96120091125: 962 8.0-RELEASE. 963 96420091113: 965 The default terminal emulation for syscons(4) has been changed 966 from cons25 to xterm on all platforms except pc98. This means 967 that the /etc/ttys file needs to be updated to ensure correct 968 operation of applications on the console. 969 970 The terminal emulation style can be toggled per window by using 971 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration 972 options can be used to change the compile-time default back to 973 cons25. 974 975 To prevent graphical artifacts, make sure the TERM environment 976 variable is set to match the terminal emulation that is being 977 performed by syscons(4). 978 97920091109: 980 The layout of the structure ieee80211req_scan_result has changed. 981 Applications that require wireless scan results (e.g. ifconfig(8)) 982 from net80211 need to be recompiled. 983 984 Applications such as wpa_supplicant(8) may require a full world 985 build without using NO_CLEAN in order to get synchronized with the 986 new structure. 987 98820091025: 989 The iwn(4) driver has been updated to support the 5000 and 5150 series. 990 There's one kernel module for each firmware. Adding "device iwnfw" 991 to the kernel configuration file means including all three firmware 992 images inside the kernel. If you want to include just the one for 993 your wireless card, use the devices iwn4965fw, iwn5000fw or 994 iwn5150fw. 995 99620090926: 997 The rc.d/network_ipv6, IPv6 configuration script has been integrated 998 into rc.d/netif. The changes are the following: 999 1000 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF 1001 for IPv4. For aliases, $ifconfig_IF_aliasN should be used. 1002 Note that both variables need the "inet6" keyword at the head. 1003 1004 Do not set $ipv6_network_interfaces manually if you do not 1005 understand what you are doing. It is not needed in most cases. 1006 1007 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but 1008 they are obsolete. 1009 1010 2. $ipv6_enable is obsolete. Use $ipv6_prefer and 1011 "inet6 accept_rtadv" keyword in ifconfig(8) instead. 1012 1013 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and 1014 all configured interfaces have "inet6 accept_rtadv" in the 1015 $ifconfig_IF_ipv6. These are for backward compatibility. 1016 1017 3. A new variable $ipv6_prefer has been added. If NO, IPv6 1018 functionality of interfaces with no corresponding 1019 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag, 1020 and the default address selection policy of ip6addrctl(8) 1021 is the IPv4-preferred one (see rc.d/ip6addrctl for more details). 1022 Note that if you want to configure IPv6 functionality on the 1023 disabled interfaces after boot, first you need to clear the flag by 1024 using ifconfig(8) like: 1025 1026 ifconfig em0 inet6 -ifdisabled 1027 1028 If YES, the default address selection policy is set as 1029 IPv6-preferred. 1030 1031 The default value of $ipv6_prefer is NO. 1032 1033 4. If your system need to receive Router Advertisement messages, 1034 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8) 1035 scripts automatically invoke rtsol(8) when the interface becomes 1036 UP. The Router Advertisement messages are used for SLAAC 1037 (State-Less Address AutoConfiguration). 1038 103920090922: 1040 802.11s D3.03 support was committed. This is incompatible with the 1041 previous code, which was based on D3.0. 1042 104320090912: 1044 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value 1045 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to 1046 control whether accepting Router Advertisement messages or not. 1047 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and 1048 a sysctl variable net.inet6.ip6.auto_linklocal is its default value. 1049 The ifconfig(8) utility now supports these flags. 1050 105120090910: 1052 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for 1053 mount(8) and -a option for df(1) to see them. 1054 105520090825: 1056 The old tunable hw.bus.devctl_disable has been superseded by 1057 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be 1058 replaced by hw.bus.devctl_queue=0. The default for this new tunable 1059 is 1000. 1060 106120090813: 1062 Remove the option STOP_NMI. The default action is now to use NMI only 1063 for KDB via the newly introduced function stop_cpus_hard() and 1064 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64. 1065 106620090803: 1067 The stable/8 branch created in subversion. This corresponds to the 1068 RELENG_8 branch in CVS. 1069 107020090719: 1071 Bump the shared library version numbers for all libraries that do not 1072 use symbol versioning as part of the 8.0-RELEASE cycle. Bump 1073 __FreeBSD_version to 800105. 1074 107520090714: 1076 Due to changes in the implementation of virtual network stack support, 1077 all network-related kernel modules must be recompiled. As this change 1078 breaks the ABI, bump __FreeBSD_version to 800104. 1079 108020090713: 1081 The TOE interface to the TCP syncache has been modified to remove 1082 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. 1083 The cxgb driver is the only TOE consumer affected by this change, and 1084 needs to be recompiled along with the kernel. As this change breaks 1085 the ABI, bump __FreeBSD_version to 800103. 1086 108720090712: 1088 Padding has been added to struct tcpcb, sackhint and tcpstat in 1089 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst 1090 maintaining the ABI. However, this change breaks the ABI, so bump 1091 __FreeBSD_version to 800102. User space tools that rely on the size of 1092 any of these structs (e.g. sockstat) need to be recompiled. 1093 109420090630: 1095 The NFS_LEGACYRPC option has been removed along with the old kernel 1096 RPC implementation that this option selected. Kernel configurations 1097 may need to be adjusted. 1098 109920090629: 1100 The network interface device nodes at /dev/net/<interface> have been 1101 removed. All ioctl operations can be performed the normal way using 1102 routing sockets. The kqueue functionality can generally be replaced 1103 with routing sockets. 1104 110520090628: 1106 The documentation from the FreeBSD Documentation Project (Handbook, 1107 FAQ, etc.) is now installed via packages by sysinstall(8) and under 1108 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc. 1109 111020090624: 1111 The ABI of various structures related to the SYSV IPC API have been 1112 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel 1113 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to 1114 800100. 1115 111620090622: 1117 Layout of struct vnet has changed as routing related variables were 1118 moved to their own Vimage module. Modules need to be recompiled. Bump 1119 __FreeBSD_version to 800099. 1120 112120090619: 1122 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024 1123 respectively. As long as no more than 16 groups per process are used, 1124 no changes should be visible. When more than 16 groups are used, old 1125 binaries may fail if they call getgroups() or getgrouplist() with 1126 statically sized storage. Recompiling will work around this, but 1127 applications should be modified to use dynamically allocated storage 1128 for group arrays as POSIX.1-2008 does not cap an implementation's 1129 number of supported groups at NGROUPS_MAX+1 as previous versions did. 1130 1131 NFS and portalfs mounts may also be affected as the list of groups is 1132 truncated to 16. Users of NFS who use more than 16 groups, should 1133 take care that negative group permissions are not used on the exported 1134 file systems as they will not be reliable unless a GSSAPI based 1135 authentication method is used. 1136 113720090616: 1138 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This 1139 option compiles in the support for adaptive spinning for lockmgrs 1140 which want to enable it. The lockinit() function now accepts the flag 1141 LK_ADAPTIVE in order to make the lock object subject to adaptive 1142 spinning when both held in write and read mode. 1143 114420090613: 1145 The layout of the structure returned by IEEE80211_IOC_STA_INFO has 1146 changed. User applications that use this ioctl need to be rebuilt. 1147 114820090611: 1149 The layout of struct thread has changed. Kernel and modules need to 1150 be rebuilt. 1151 115220090608: 1153 The layout of structs ifnet, domain, protosw and vnet_net has changed. 1154 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097. 1155 115620090602: 1157 window(1) has been removed from the base system. It can now be 1158 installed from ports. The port is called misc/window. 1159 116020090601: 1161 The way we are storing and accessing `routing table' entries has 1162 changed. Programs reading the FIB, like netstat, need to be 1163 re-compiled. 1164 116520090601: 1166 A new netisr implementation has been added for FreeBSD 8. Network 1167 file system modules, such as igmp, ipdivert, and others, should be 1168 rebuilt. 1169 Bump __FreeBSD_version to 800096. 1170 117120090530: 1172 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no 1173 more valid. 1174 117520090530: 1176 Add VOP_ACCESSX(9). File system modules need to be rebuilt. 1177 Bump __FreeBSD_version to 800094. 1178 117920090529: 1180 Add mnt_xflag field to 'struct mount'. File system modules need to be 1181 rebuilt. 1182 Bump __FreeBSD_version to 800093. 1183 118420090528: 1185 The compiling option ADAPTIVE_SX has been retired while it has been 1186 introduced the option NO_ADAPTIVE_SX which handles the reversed logic. 1187 The KPI for sx_init_flags() changes as accepting flags: 1188 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has 1189 been introduced in order to handle the reversed logic. 1190 Bump __FreeBSD_version to 800092. 1191 119220090527: 1193 Add support for hierarchical jails. Remove global securelevel. 1194 Bump __FreeBSD_version to 800091. 1195 119620090523: 1197 The layout of struct vnet_net has changed, therefore modules 1198 need to be rebuilt. 1199 Bump __FreeBSD_version to 800090. 1200 120120090523: 1202 The newly imported zic(8) produces a new format in the output. Please 1203 run tzsetup(8) to install the newly created data to /etc/localtime. 1204 120520090520: 1206 The sysctl tree for the usb stack has renamed from hw.usb2.* to 1207 hw.usb.* and is now consistent again with previous releases. 1208 120920090520: 1210 802.11 monitor mode support was revised and driver api's were changed. 1211 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead 1212 of DLT_IEEE802_11. No user-visible data structures were changed but 1213 applications that use DLT_IEEE802_11 may require changes. 1214 Bump __FreeBSD_version to 800088. 1215 121620090430: 1217 The layout of the following structs has changed: sysctl_oid, 1218 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet, 1219 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or 1220 panics may be experienced. World rebuild is required for 1221 correctly checking networking state from userland. 1222 Bump __FreeBSD_version to 800085. 1223 122420090429: 1225 MLDv2 and Source-Specific Multicast (SSM) have been merged 1226 to the IPv6 stack. VIMAGE hooks are in but not yet used. 1227 The implementation of SSM within FreeBSD's IPv6 stack closely 1228 follows the IPv4 implementation. 1229 1230 For kernel developers: 1231 1232 * The most important changes are that the ip6_output() and 1233 ip6_input() paths no longer take the IN6_MULTI_LOCK, 1234 and this lock has been downgraded to a non-recursive mutex. 1235 1236 * As with the changes to the IPv4 stack to support SSM, filtering 1237 of inbound multicast traffic must now be performed by transport 1238 protocols within the IPv6 stack. This does not apply to TCP and 1239 SCTP, however, it does apply to UDP in IPv6 and raw IPv6. 1240 1241 * The KPIs used by IPv6 multicast are similar to those used by 1242 the IPv4 stack, with the following differences: 1243 * im6o_mc_filter() is analogous to imo_multicast_filter(). 1244 * The legacy KAME entry points in6_joingroup and in6_leavegroup() 1245 are shimmed to in6_mc_join() and in6_mc_leave() respectively. 1246 * IN6_LOOKUP_MULTI() has been deprecated and removed. 1247 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs 1248 for MLDv1 have an additional 'timer' argument which is used to 1249 jitter the initial membership report for the solicited-node 1250 multicast membership on-link. 1251 * This is not strictly needed for MLDv2, which already jitters 1252 its report transmissions. However, the 'timer' argument is 1253 preserved in case MLDv1 is active on the interface. 1254 1255 * The KAME linked-list based IPv6 membership implementation has 1256 been refactored to use a vector similar to that used by the IPv4 1257 stack. 1258 Code which maintains a list of its own multicast memberships 1259 internally, e.g. carp, has been updated to reflect the new 1260 semantics. 1261 1262 * There is a known Lock Order Reversal (LOR) due to in6_setscope() 1263 acquiring the IF_AFDATA_LOCK and being called within ip6_output(). 1264 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an 1265 implementation constraint which needs to be addressed in HEAD. 1266 1267 For application developers: 1268 1269 * The changes are broadly similar to those made for the IPv4 1270 stack. 1271 1272 * The use of IPv4 and IPv6 multicast socket options on the same 1273 socket, using mapped addresses, HAS NOT been tested or supported. 1274 1275 * There are a number of issues with the implementation of various 1276 IPv6 multicast APIs which need to be resolved in the API surface 1277 before the implementation is fully compatible with KAME userland 1278 use, and these are mostly to do with interface index treatment. 1279 1280 * The literature available discusses the use of either the delta / ASM 1281 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API 1282 using setsourcefilter(3)/getsourcefilter(3). For more information 1283 please refer to RFC 3768, 'Socket Interface Extensions for 1284 Multicast Source Filters'. 1285 1286 * Applications which use the published RFC 3678 APIs should be fine. 1287 1288 For systems administrators: 1289 1290 * The mtest(8) utility has been refactored to support IPv6, in 1291 addition to IPv4. Interface addresses are no longer accepted 1292 as arguments, their names must be used instead. The utility 1293 will map the interface name to its first IPv4 address as 1294 returned by getifaddrs(3). 1295 1296 * The ifmcstat(8) utility has also been updated to print the MLDv2 1297 endpoint state and source filter lists via sysctl(3). 1298 1299 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable 1300 loopback of IPv6 multicast datagrams by default; it defaults to 1 1301 to preserve the existing behaviour. Disabling multicast loopback is 1302 recommended for optimal system performance. 1303 1304 * The IPv6 MROUTING code has been changed to examine this sysctl 1305 instead of attempting to perform a group lookup before looping 1306 back forwarded datagrams. 1307 1308 Bump __FreeBSD_version to 800084. 1309 131020090422: 1311 Implement low-level Bluetooth HCI API. 1312 Bump __FreeBSD_version to 800083. 1313 131420090419: 1315 The layout of struct malloc_type, used by modules to register new 1316 memory allocation types, has changed. Most modules will need to 1317 be rebuilt or panics may be experienced. 1318 Bump __FreeBSD_version to 800081. 1319 132020090415: 1321 Anticipate overflowing inp_flags - add inp_flags2. 1322 This changes most offsets in inpcb, so checking v4 connection 1323 state will require a world rebuild. 1324 Bump __FreeBSD_version to 800080. 1325 132620090415: 1327 Add an llentry to struct route and struct route_in6. Modules 1328 embedding a struct route will need to be recompiled. 1329 Bump __FreeBSD_version to 800079. 1330 133120090414: 1332 The size of rt_metrics_lite and by extension rtentry has changed. 1333 Networking administration apps will need to be recompiled. 1334 The route command now supports show as an alias for get, weighting 1335 of routes, sticky and nostick flags to alter the behavior of stateful 1336 load balancing. 1337 Bump __FreeBSD_version to 800078. 1338 133920090408: 1340 Do not use Giant for kbdmux(4) locking. This is wrong and 1341 apparently causing more problems than it solves. This will 1342 re-open the issue where interrupt handlers may race with 1343 kbdmux(4) in polling mode. Typical symptoms include (but 1344 not limited to) duplicated and/or missing characters when 1345 low level console functions (such as gets) are used while 1346 interrupts are enabled (for example geli password prompt, 1347 mountroot prompt etc.). Disabling kbdmux(4) may help. 1348 134920090407: 1350 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed; 1351 kernel modules referencing any of the above need to be recompiled. 1352 Bump __FreeBSD_version to 800075. 1353 135420090320: 1355 GEOM_PART has become the default partition slicer for storage devices, 1356 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It 1357 introduces some changes: 1358 1359 MSDOS/EBR: the devices created from MSDOS extended partition entries 1360 (EBR) can be named differently than with GEOM_MBR and are now symlinks 1361 to devices with offset-based names. fstabs may need to be modified. 1362 1363 BSD: the "geometry does not match label" warning is harmless in most 1364 cases but it points to problems in file system misalignment with 1365 disk geometry. The "c" partition is now implicit, covers the whole 1366 top-level drive and cannot be (mis)used by users. 1367 1368 General: Kernel dumps are now not allowed to be written to devices 1369 whose partition types indicate they are meant to be used for file 1370 systems (or, in case of MSDOS partitions, as something else than 1371 the "386BSD" type). 1372 1373 Most of these changes date approximately from 200812. 1374 137520090319: 1376 The uscanner(4) driver has been removed from the kernel. This follows 1377 Linux removing theirs in 2.6 and making libusb the default interface 1378 (supported by sane). 1379 138020090319: 1381 The multicast forwarding code has been cleaned up. netstat(1) 1382 only relies on KVM now for printing bandwidth upcall meters. 1383 The IPv4 and IPv6 modules are split into ip_mroute_mod and 1384 ip6_mroute_mod respectively. The config(5) options for statically 1385 compiling this code remain the same, i.e. 'options MROUTING'. 1386 138720090315: 1388 Support for the IFF_NEEDSGIANT network interface flag has been 1389 removed, which means that non-MPSAFE network device drivers are no 1390 longer supported. In particular, if_ar, if_sr, and network device 1391 drivers from the old (legacy) USB stack can no longer be built or 1392 used. 1393 139420090313: 1395 POSIX.1 Native Language Support (NLS) has been enabled in libc and 1396 a bunch of new language catalog files have also been added. 1397 This means that some common libc messages are now localized and 1398 they depend on the LC_MESSAGES environmental variable. 1399 140020090313: 1401 The k8temp(4) driver has been renamed to amdtemp(4) since 1402 support for Family 10 and Family 11 CPU families was added. 1403 140420090309: 1405 IGMPv3 and Source-Specific Multicast (SSM) have been merged 1406 to the IPv4 stack. VIMAGE hooks are in but not yet used. 1407 1408 For kernel developers, the most important changes are that the 1409 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(), 1410 and this lock has been downgraded to a non-recursive mutex. 1411 1412 Transport protocols (UDP, Raw IP) are now responsible for filtering 1413 inbound multicast traffic according to group membership and source 1414 filters. The imo_multicast_filter() KPI exists for this purpose. 1415 Transports which do not use multicast (SCTP, TCP) already reject 1416 multicast by default. Forwarding and receive performance may improve 1417 as a mutex acquisition is no longer needed in the ip_input() 1418 low-level input path. in_addmulti() and in_delmulti() are shimmed 1419 to new KPIs which exist to support SSM in-kernel. 1420 1421 For application developers, it is recommended that loopback of 1422 multicast datagrams be disabled for best performance, as this 1423 will still cause the lock to be taken for each looped-back 1424 datagram transmission. The net.inet.ip.mcast.loop sysctl may 1425 be tuned to 0 to disable loopback by default; it defaults to 1 1426 to preserve the existing behaviour. 1427 1428 For systems administrators, to obtain best performance with 1429 multicast reception and multiple groups, it is always recommended 1430 that a card with a suitably precise hash filter is used. Hash 1431 collisions will still result in the lock being taken within the 1432 transport protocol input path to check group membership. 1433 1434 If deploying FreeBSD in an environment with IGMP snooping switches, 1435 it is recommended that the net.inet.igmp.sendlocal sysctl remain 1436 enabled; this forces 224.0.0.0/24 group membership to be announced 1437 via IGMP. 1438 1439 The size of 'struct igmpstat' has changed; netstat needs to be 1440 recompiled to reflect this. 1441 Bump __FreeBSD_version to 800070. 1442 144320090309: 1444 libusb20.so.1 is now installed as libusb.so.1 and the ports system 1445 updated to use it. This requires a buildworld/installworld in order to 1446 update the library and dependencies (usbconfig, etc). Its advisable to 1447 rebuild all ports which uses libusb. More specific directions are given 1448 in the ports collection UPDATING file. Any /etc/libmap.conf entries for 1449 libusb are no longer required and can be removed. 1450 145120090302: 1452 A workaround is committed to allow the creation of System V shared 1453 memory segment of size > 2 GB on the 64-bit architectures. 1454 Due to a limitation of the existing ABI, the shm_segsz member 1455 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is 1456 wrong for large segments. Note that limits must be explicitly 1457 raised to allow such segments to be created. 1458 145920090301: 1460 The layout of struct ifnet has changed, requiring a rebuild of all 1461 network device driver modules. 1462 146320090227: 1464 The /dev handling for the new USB stack has changed, a 1465 buildworld/installworld is required for libusb20. 1466 146720090223: 1468 The new USB2 stack has now been permanently moved in and all kernel and 1469 module names reverted to their previous values (eg, usb, ehci, ohci, 1470 ums, ...). The old usb stack can be compiled in by prefixing the name 1471 with the letter 'o', the old usb modules have been removed. 1472 Updating entry 20090216 for xorg and 20090215 for libmap may still 1473 apply. 1474 147520090217: 1476 The rc.conf(5) option if_up_delay has been renamed to 1477 defaultroute_delay to better reflect its purpose. If you have 1478 customized this setting in /etc/rc.conf you need to update it to 1479 use the new name. 1480 148120090216: 1482 xorg 7.4 wants to configure its input devices via hald which does not 1483 yet work with USB2. If the keyboard/mouse does not work in xorg then 1484 add 1485 Option "AllowEmptyInput" "off" 1486 to your ServerLayout section. This will cause X to use the configured 1487 kbd and mouse sections from your xorg.conf. 1488 148920090215: 1490 The GENERIC kernels for all architectures now default to the new USB2 1491 stack. No kernel config options or code have been removed so if a 1492 problem arises please report it and optionally revert to the old USB 1493 stack. If you are loading USB kernel modules or have a custom kernel 1494 that includes GENERIC then ensure that usb names are also changed over, 1495 eg uftdi -> usb2_serial_ftdi. 1496 1497 Older programs linked against the ports libusb 0.1 need to be 1498 redirected to the new stack's libusb20. /etc/libmap.conf can 1499 be used for this: 1500 # Map old usb library to new one for usb2 stack 1501 libusb-0.1.so.8 libusb20.so.1 1502 150320090209: 1504 All USB ethernet devices now attach as interfaces under the name ueN 1505 (eg. ue0). This is to provide a predictable name as vendors often 1506 change usb chipsets in a product without notice. 1507 150820090203: 1509 The ichsmb(4) driver has been changed to require SMBus slave 1510 addresses be left-justified (xxxxxxx0b) rather than right-justified. 1511 All of the other SMBus controller drivers require left-justified 1512 slave addresses, so this change makes all the drivers provide the 1513 same interface. 1514 151520090201: 1516 INET6 statistics (struct ip6stat) was updated. 1517 netstat(1) needs to be recompiled. 1518 151920090119: 1520 NTFS has been removed from GENERIC kernel on amd64 to match 1521 GENERIC on i386. Should not cause any issues since mount_ntfs(8) 1522 will load ntfs.ko module automatically when NTFS support is 1523 actually needed, unless ntfs.ko is not installed or security 1524 level prohibits loading kernel modules. If either is the case, 1525 "options NTFS" has to be added into kernel config. 1526 152720090115: 1528 TCP Appropriate Byte Counting (RFC 3465) support added to kernel. 1529 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to 1530 800061. User space tools that rely on the size of struct tcpcb in 1531 tcp_var.h (e.g. sockstat) need to be recompiled. 1532 153320081225: 1534 ng_tty(4) module updated to match the new TTY subsystem. 1535 Due to API change, user-level applications must be updated. 1536 New API support added to mpd5 CVS and expected to be present 1537 in next mpd5.3 release. 1538 153920081219: 1540 With __FreeBSD_version 800060 the makefs tool is part of 1541 the base system (it was a port). 1542 154320081216: 1544 The afdata and ifnet locks have been changed from mutexes to 1545 rwlocks, network modules will need to be re-compiled. 1546 154720081214: 1548 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite. 1549 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated. 1550 The new code reduced struct rtentry{} by 16 bytes on 32-bit 1551 architecture and 40 bytes on 64-bit architecture. The userland 1552 applications "arp" and "ndp" have been updated accordingly. 1553 The output from "netstat -r" shows only routing entries and 1554 none of the L2 information. 1555 155620081130: 1557 __FreeBSD_version 800057 marks the switchover from the 1558 binary ath hal to source code. Users must add the line: 1559 1560 options AH_SUPPORT_AR5416 1561 1562 to their kernel config files when specifying: 1563 1564 device ath_hal 1565 1566 The ath_hal module no longer exists; the code is now compiled 1567 together with the driver in the ath module. It is now 1568 possible to tailor chip support (i.e. reduce the set of chips 1569 and thereby the code size); consult ath_hal(4) for details. 1570 157120081121: 1572 __FreeBSD_version 800054 adds memory barriers to 1573 <machine/atomic.h>, new interfaces to ifnet to facilitate 1574 multiple hardware transmit queues for cards that support 1575 them, and a lock-less ring-buffer implementation to 1576 enable drivers to more efficiently manage queueing of 1577 packets. 1578 157920081117: 1580 A new version of ZFS (version 13) has been merged to -HEAD. 1581 This version has zpool attribute "listsnapshots" off by 1582 default, which means "zfs list" does not show snapshots, 1583 and is the same as Solaris behavior. 1584 158520081028: 1586 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled. 1587 158820081009: 1589 The uhci, ohci, ehci and slhci USB Host controller drivers have 1590 been put into separate modules. If you load the usb module 1591 separately through loader.conf you will need to load the 1592 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0 1593 controller add the following to loader.conf: 1594 1595 uhci_load="YES" 1596 ehci_load="YES" 1597 159820081009: 1599 The ABI used by the PMC toolset has changed. Please keep 1600 userland (libpmc(3)) and the kernel module (hwpmc(4)) in 1601 sync. 1602 160320081009: 1604 atapci kernel module now includes only generic PCI ATA 1605 driver. AHCI driver moved to ataahci kernel module. 1606 All vendor-specific code moved into separate kernel modules: 1607 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek, 1608 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron, 1609 atamarvell, atamicron, atanational, atanetcell, atanvidia, 1610 atapromise, ataserverworks, atasiliconimage, atasis, atavia 1611 161220080820: 1613 The TTY subsystem of the kernel has been replaced by a new 1614 implementation, which provides better scalability and an 1615 improved driver model. Most common drivers have been migrated to 1616 the new TTY subsystem, while others have not. The following 1617 drivers have not yet been ported to the new TTY layer: 1618 1619 PCI/ISA: 1620 cy, digi, rc, rp, sio 1621 1622 USB: 1623 ubser, ucycom 1624 1625 Line disciplines: 1626 ng_h4, ng_tty, ppp, sl, snp 1627 1628 Adding these drivers to your kernel configuration file shall 1629 cause compilation to fail. 1630 163120080818: 1632 ntpd has been upgraded to 4.2.4p5. 1633 163420080801: 1635 OpenSSH has been upgraded to 5.1p1. 1636 1637 For many years, FreeBSD's version of OpenSSH preferred DSA 1638 over RSA for host and user authentication keys. With this 1639 upgrade, we've switched to the vendor's default of RSA over 1640 DSA. This may cause upgraded clients to warn about unknown 1641 host keys even for previously known hosts. Users should 1642 follow the usual procedure for verifying host keys before 1643 accepting the RSA key. 1644 1645 This can be circumvented by setting the "HostKeyAlgorithms" 1646 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh 1647 command line. 1648 1649 Please note that the sequence of keys offered for 1650 authentication has been changed as well. You may want to 1651 specify IdentityFile in a different order to revert this 1652 behavior. 1653 165420080713: 1655 The sio(4) driver has been removed from the i386 and amd64 1656 kernel configuration files. This means uart(4) is now the 1657 default serial port driver on those platforms as well. 1658 1659 To prevent collisions with the sio(4) driver, the uart(4) driver 1660 uses different names for its device nodes. This means the 1661 onboard serial port will now most likely be called "ttyu0" 1662 instead of "ttyd0". You may need to reconfigure applications to 1663 use the new device names. 1664 1665 When using the serial port as a boot console, be sure to update 1666 /boot/device.hints and /etc/ttys before booting the new kernel. 1667 If you forget to do so, you can still manually specify the hints 1668 at the loader prompt: 1669 1670 set hint.uart.0.at="isa" 1671 set hint.uart.0.port="0x3F8" 1672 set hint.uart.0.flags="0x10" 1673 set hint.uart.0.irq="4" 1674 boot -s 1675 167620080609: 1677 The gpt(8) utility has been removed. Use gpart(8) to partition 1678 disks instead. 1679 168020080603: 1681 The version that Linuxulator emulates was changed from 2.4.2 1682 to 2.6.16. If you experience any problems with Linux binaries 1683 please try to set sysctl compat.linux.osrelease to 2.4.2 and 1684 if it fixes the problem contact emulation mailing list. 1685 168620080525: 1687 ISDN4BSD (I4B) was removed from the src tree. You may need to 1688 update a your kernel configuration and remove relevant entries. 1689 169020080509: 1691 I have checked in code to support multiple routing tables. 1692 See the man pages setfib(1) and setfib(2). 1693 This is a hopefully backwards compatible version, 1694 but to make use of it you need to compile your kernel 1695 with options ROUTETABLES=2 (or more up to 16). 1696 169720080420: 1698 The 802.11 wireless support was redone to enable multi-bss 1699 operation on devices that are capable. The underlying device 1700 is no longer used directly but instead wlanX devices are 1701 cloned with ifconfig. This requires changes to rc.conf files. 1702 For example, change: 1703 ifconfig_ath0="WPA DHCP" 1704 to 1705 wlans_ath0=wlan0 1706 ifconfig_wlan0="WPA DHCP" 1707 see rc.conf(5) for more details. In addition, mergemaster of 1708 /etc/rc.d is highly recommended. Simultaneous update of userland 1709 and kernel wouldn't hurt either. 1710 1711 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta 1712 modules were merged into the base wlan module. All references 1713 to these modules (e.g. in kernel config files) must be removed. 1714 171520080408: 1716 psm(4) has gained write(2) support in native operation level. 1717 Arbitrary commands can be written to /dev/psm%d and status can 1718 be read back from it. Therefore, an application is responsible 1719 for status validation and error recovery. It is a no-op in 1720 other operation levels. 1721 172220080312: 1723 Support for KSE threading has been removed from the kernel. To 1724 run legacy applications linked against KSE libmap.conf may 1725 be used. The following libmap.conf may be used to ensure 1726 compatibility with any prior release: 1727 1728 libpthread.so.1 libthr.so.1 1729 libpthread.so.2 libthr.so.2 1730 libkse.so.3 libthr.so.3 1731 173220080301: 1733 The layout of struct vmspace has changed. This affects libkvm 1734 and any executables that link against libkvm and use the 1735 kvm_getprocs() function. In particular, but not exclusively, 1736 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1). 1737 The effects are minimal, but it's advisable to upgrade world 1738 nonetheless. 1739 174020080229: 1741 The latest em driver no longer has support in it for the 1742 82575 adapter, this is now moved to the igb driver. The 1743 split was done to make new features that are incompatible 1744 with older hardware easier to do. 1745 174620080220: 1747 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4), 1748 likewise the kernel option is now GEOM_LINUX_LVM. 1749 175020080211: 1751 The default NFS mount mode has changed from UDP to TCP for 1752 increased reliability. If you rely on (insecurely) NFS 1753 mounting across a firewall you may need to update your 1754 firewall rules. 1755 175620080208: 1757 Belatedly note the addition of m_collapse for compacting 1758 mbuf chains. 1759 176020080126: 1761 The fts(3) structures have been changed to use adequate 1762 integer types for their members and so to be able to cope 1763 with huge file trees. The old fts(3) ABI is preserved 1764 through symbol versioning in libc, so third-party binaries 1765 using fts(3) should still work, although they will not take 1766 advantage of the extended types. At the same time, some 1767 third-party software might fail to build after this change 1768 due to unportable assumptions made in its source code about 1769 fts(3) structure members. Such software should be fixed 1770 by its vendor or, in the worst case, in the ports tree. 1771 FreeBSD_version 800015 marks this change for the unlikely 1772 case that a portable fix is impossible. 1773 177420080123: 1775 To upgrade to -current after this date, you must be running 1776 FreeBSD not older than 6.0-RELEASE. Upgrading to -current 1777 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems. 1778 177920071128: 1780 The ADAPTIVE_GIANT kernel option has been retired because its 1781 functionality is the default now. 1782 178320071118: 1784 The AT keyboard emulation of sunkbd(4) has been turned on 1785 by default. In order to make the special symbols of the Sun 1786 keyboards driven by sunkbd(4) work under X these now have 1787 to be configured the same way as Sun USB keyboards driven 1788 by ukbd(4) (which also does AT keyboard emulation), f.e.: 1789 1790 Option "XkbLayout" "us" 1791 Option "XkbRules" "xorg" 1792 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us" 1793 179420071024: 1795 It has been decided that it is desirable to provide ABI 1796 backwards compatibility to the FreeBSD 4/5/6 versions of the 1797 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was 1798 broken with the introduction of PCI domain support (see the 1799 20070930 entry). Unfortunately, this required the ABI of 1800 PCIOCGETCONF to be broken again in order to be able to 1801 provide backwards compatibility to the old version of that 1802 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled 1803 again. As for prominent ports this affects neither pciutils 1804 nor xorg-server this time, the hal port needs to be rebuilt 1805 however. 1806 180720071020: 1808 The misnamed kthread_create() and friends have been renamed 1809 to kproc_create() etc. Many of the callers already 1810 used kproc_start().. 1811 I will return kthread_create() and friends in a while 1812 with implementations that actually create threads, not procs. 1813 Renaming corresponds with version 800002. 1814 181520071010: 1816 RELENG_7 branched. 1817 1818COMMON ITEMS: 1819 1820 General Notes 1821 ------------- 1822 Avoid using make -j when upgrading. While generally safe, there are 1823 sometimes problems using -j to upgrade. If your upgrade fails with 1824 -j, please try again without -j. From time to time in the past there 1825 have been problems using -j with buildworld and/or installworld. This 1826 is especially true when upgrading between "distant" versions (eg one 1827 that cross a major release boundary or several minor releases, or when 1828 several months have passed on the -current branch). 1829 1830 Sometimes, obscure build problems are the result of environment 1831 poisoning. This can happen because the make utility reads its 1832 environment when searching for values for global variables. To run 1833 your build attempts in an "environmental clean room", prefix all make 1834 commands with 'env -i '. See the env(1) manual page for more details. 1835 1836 When upgrading from one major version to another it is generally best 1837 to upgrade to the latest code in the currently installed branch first, 1838 then do an upgrade to the new branch. This is the best-tested upgrade 1839 path, and has the highest probability of being successful. Please try 1840 this approach before reporting problems with a major version upgrade. 1841 1842 When upgrading a live system, having a root shell around before 1843 installing anything can help undo problems. Not having a root shell 1844 around can lead to problems if pam has changed too much from your 1845 starting point to allow continued authentication after the upgrade. 1846 1847 ZFS notes 1848 --------- 1849 When upgrading the boot ZFS pool to a new version, always follow 1850 these two steps: 1851 1852 1.) recompile and reinstall the ZFS boot loader and boot block 1853 (this is part of "make buildworld" and "make installworld") 1854 1855 2.) update the ZFS boot block on your boot drive 1856 1857 The following example updates the ZFS boot block on the first 1858 partition (freebsd-boot) of a GPT partitioned drive ad0: 1859 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0" 1860 1861 Non-boot pools do not need these updates. 1862 1863 To build a kernel 1864 ----------------- 1865 If you are updating from a prior version of FreeBSD (even one just 1866 a few days old), you should follow this procedure. It is the most 1867 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld, 1868 1869 make kernel-toolchain 1870 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE 1871 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE 1872 1873 To test a kernel once 1874 --------------------- 1875 If you just want to boot a kernel once (because you are not sure 1876 if it works, or if you want to boot a known bad kernel to provide 1877 debugging information) run 1878 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel 1879 nextboot -k testkernel 1880 1881 To just build a kernel when you know that it won't mess you up 1882 -------------------------------------------------------------- 1883 This assumes you are already running a CURRENT system. Replace 1884 ${arch} with the architecture of your machine (e.g. "i386", 1885 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc). 1886 1887 cd src/sys/${arch}/conf 1888 config KERNEL_NAME_HERE 1889 cd ../compile/KERNEL_NAME_HERE 1890 make depend 1891 make 1892 make install 1893 1894 If this fails, go to the "To build a kernel" section. 1895 1896 To rebuild everything and install it on the current system. 1897 ----------------------------------------------------------- 1898 # Note: sometimes if you are running current you gotta do more than 1899 # is listed here if you are upgrading from a really old current. 1900 1901 <make sure you have good level 0 dumps> 1902 make buildworld 1903 make kernel KERNCONF=YOUR_KERNEL_HERE 1904 [1] 1905 <reboot in single user> [3] 1906 mergemaster -p [5] 1907 make installworld 1908 mergemaster -i [4] 1909 make delete-old [6] 1910 <reboot> 1911 1912 To cross-install current onto a separate partition 1913 -------------------------------------------------- 1914 # In this approach we use a separate partition to hold 1915 # current's root, 'usr', and 'var' directories. A partition 1916 # holding "/", "/usr" and "/var" should be about 2GB in 1917 # size. 1918 1919 <make sure you have good level 0 dumps> 1920 <boot into -stable> 1921 make buildworld 1922 make buildkernel KERNCONF=YOUR_KERNEL_HERE 1923 <maybe newfs current's root partition> 1924 <mount current's root partition on directory ${CURRENT_ROOT}> 1925 make installworld DESTDIR=${CURRENT_ROOT} 1926 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd 1927 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT} 1928 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd 1929 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition> 1930 <reboot into current> 1931 <do a "native" rebuild/install as described in the previous section> 1932 <maybe install compatibility libraries from ports/misc/compat*> 1933 <reboot> 1934 1935 1936 To upgrade in-place from stable to current 1937 ---------------------------------------------- 1938 <make sure you have good level 0 dumps> 1939 make buildworld [9] 1940 make kernel KERNCONF=YOUR_KERNEL_HERE [8] 1941 [1] 1942 <reboot in single user> [3] 1943 mergemaster -p [5] 1944 make installworld 1945 mergemaster -i [4] 1946 make delete-old [6] 1947 <reboot> 1948 1949 Make sure that you've read the UPDATING file to understand the 1950 tweaks to various things you need. At this point in the life 1951 cycle of current, things change often and you are on your own 1952 to cope. The defaults can also change, so please read ALL of 1953 the UPDATING entries. 1954 1955 Also, if you are tracking -current, you must be subscribed to 1956 freebsd-current@freebsd.org. Make sure that before you update 1957 your sources that you have read and understood all the recent 1958 messages there. If in doubt, please track -stable which has 1959 much fewer pitfalls. 1960 1961 [1] If you have third party modules, such as vmware, you 1962 should disable them at this point so they don't crash your 1963 system on reboot. 1964 1965 [3] From the bootblocks, boot -s, and then do 1966 fsck -p 1967 mount -u / 1968 mount -a 1969 cd src 1970 adjkerntz -i # if CMOS is wall time 1971 Also, when doing a major release upgrade, it is required that 1972 you boot into single user mode to do the installworld. 1973 1974 [4] Note: This step is non-optional. Failure to do this step 1975 can result in a significant reduction in the functionality of the 1976 system. Attempting to do it by hand is not recommended and those 1977 that pursue this avenue should read this file carefully, as well 1978 as the archives of freebsd-current and freebsd-hackers mailing lists 1979 for potential gotchas. The -U option is also useful to consider. 1980 See mergemaster(8) for more information. 1981 1982 [5] Usually this step is a noop. However, from time to time 1983 you may need to do this if you get unknown user in the following 1984 step. It never hurts to do it all the time. You may need to 1985 install a new mergemaster (cd src/usr.sbin/mergemaster && make 1986 install) after the buildworld before this step if you last updated 1987 from current before 20130425 or from -stable before 20130430. 1988 1989 [6] This only deletes old files and directories. Old libraries 1990 can be deleted by "make delete-old-libs", but you have to make 1991 sure that no program is using those libraries anymore. 1992 1993 [8] In order to have a kernel that can run the 4.x binaries needed to 1994 do an installworld, you must include the COMPAT_FREEBSD4 option in 1995 your kernel. Failure to do so may leave you with a system that is 1996 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is 1997 required to run the 5.x binaries on more recent kernels. And so on 1998 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7. 1999 2000 Make sure that you merge any new devices from GENERIC since the 2001 last time you updated your kernel config file. 2002 2003 [9] When checking out sources, you must include the -P flag to have 2004 cvs prune empty directories. 2005 2006 If CPUTYPE is defined in your /etc/make.conf, make sure to use the 2007 "?=" instead of the "=" assignment operator, so that buildworld can 2008 override the CPUTYPE if it needs to. 2009 2010 MAKEOBJDIRPREFIX must be defined in an environment variable, and 2011 not on the command line, or in /etc/make.conf. buildworld will 2012 warn if it is improperly defined. 2013FORMAT: 2014 2015This file contains a list, in reverse chronological order, of major 2016breakages in tracking -current. It is not guaranteed to be a complete 2017list of such breakages, and only contains entries since October 10, 2007. 2018If you need to see UPDATING entries from before that date, you will need 2019to fetch an UPDATING file from an older FreeBSD release. 2020 2021Copyright information: 2022 2023Copyright 1998-2009 M. Warner Losh. All Rights Reserved. 2024 2025Redistribution, publication, translation and use, with or without 2026modification, in full or in part, in any form or format of this 2027document are permitted without further permission from the author. 2028 2029THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR 2030IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 2031WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 2032DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT, 2033INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 2034(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 2035SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2036HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 2037STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 2038IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 2039POSSIBILITY OF SUCH DAMAGE. 2040 2041Contact Warner Losh if you have any questions about your use of 2042this document. 2043 2044$FreeBSD: stable/10/UPDATING 259447 2013-12-16 02:04:28Z bjk $ 2045