UPDATING revision 165234
1Updating Information for FreeBSD current users 2 3This file is maintained and copyrighted by M. Warner Losh 4<imp@village.org>. See end of file for further details. For commonly 5done items, please see the COMMON ITEMS: section later in the file. 6 7Items affecting the ports and packages system can be found in 8/usr/ports/UPDATING. Please read that file before running 9portupgrade. 10 11NOTE TO PEOPLE WHO THINK THAT FreeBSD 7.x IS SLOW: 12 FreeBSD 7.x has many debugging features turned on, in 13 both the kernel and userland. These features attempt to detect 14 incorrect use of system primitives, and encourage loud failure 15 through extra sanity checking and fail stop semantics. They 16 also substantially impact system performance. If you want to 17 do performance measurement, benchmarking, and optimization, 18 you'll want to turn them off. This includes various WITNESS- 19 related kernel options, INVARIANTS, malloc debugging flags 20 in userland, and various verbose features in the kernel. Many 21 developers choose to disable these features on build machines 22 to maximize performance. 23 2420061214: 25 Support for PCI Message Signalled Interrupts has been added 26 to the bge driver. If there are any problems, MSI can be 27 disabled completely by setting the 'hw.pci.enable_msi' and 28 'hw.pci.enable_msix' tunables to 0 in the loader. 29 3020061205: 31 The removal of several facets of the experimental Threading 32 system from the kernel means that the proc and thread structures 33 have changed quite a bit. I suggest all kernel modules that might 34 reference these structures be recompiled.. Especially the 35 linux module. 36 3720061126: 38 Sound infrastructure has been updated with various fixes and 39 improvements. Most of the changes are pretty much transparent, 40 with exceptions of followings: 41 1) All sound driver specific sysctls (hw.snd.pcm%d.*) have been 42 moved to their own dev sysctl nodes, for example: 43 hw.snd.pcm0.vchans -> dev.pcm.0.vchans 44 2) /dev/dspr%d.%d has been deprecated. Each channel now has its 45 own chardev in the form of "dsp%d.<function>%d", where <function> 46 is p = playback, r = record and v = virtual, respectively. Users 47 are encouraged to use these devs instead of (old) "/dev/dsp%d.%d". 48 This does not affect those who are using "/dev/dsp". 49 5020061122: 51 The following binaries have been disconnected from the build: 52 mount_devfs, mount_ext2fs, mount_fdescfs, mount_procfs, mount_linprocfs, 53 and mount_std. The functionality of these programs has been 54 moved into the mount program. For example, to mount a devfs 55 filesystem, instead of using mount_devfs, use: "mount -t devfs". 56 This does not affect entries in /etc/fstab, since entries in 57 /etc/fstab are always processed with "mount -t fstype". 58 5920061113: 60 Support for PCI Message Signalled Interrupts on i386 and amd64 61 has been added to the kernel and various drivers will soon be 62 updated to use MSI when it is available. If there are any problems, 63 MSI can be disabled completely by setting the 'hw.pci.enable_msi' 64 and 'hw.pci.enable_msix' tunables to 0 in the loader. 65 6620061110: 67 The MUTEX_PROFILING option has been renamed to LOCK_PROFILING. 68 The lockmgr object layout has been changed as a result of having 69 a lock_object embedded in it. As a consequence all file system 70 kernel modules must be re-compiled. The mutex profiling man page 71 has not yet been updated to reflect this change. 72 7320061026: 74 KSE in the kernel has now been made optional and turned on by 75 default. Use 'nooption KSE' in your kernel config to turn it 76 off. All kernel modules *must* be recompiled after this change. 77 There-after, modules from a KSE kernel should be compatible with 78 modules from a NOKSE kernel due to the temporary padding fields 79 added to 'struct proc'. 80 8120060929: 82 mrouted and its utilities have been removed from the base system. 83 8420060927: 85 Some ioctl(2) command codes have changed. Full backward ABI 86 compatibility is provided if the "options COMPAT_FREEBSD6" is 87 present in the kernel configuration file. Make sure to add 88 this option to your kernel config file, or recompile X.Org 89 and the rest of ports; otherwise they may refuse to work. 90 9120060924: 92 tcpslice has been removed from the base system. 93 9420060913: 95 The sizes of struct tcpcb (and struct xtcpcb) have changed due to 96 the rewrite of TCP syncookies. Tools like netstat, sockstat, and 97 systat needs to be rebuilt. 98 9920060903: 100 libpcap updated to v0.9.4 and tcpdump to v3.9.4 101 10220060816: 103 The IPFIREWALL_FORWARD_EXTENDED option is gone and the behaviour 104 for IPFIREWALL_FORWARD is now as it was before when it was first 105 committed and for years after. The behaviour is now ON. 106 10720060725: 108 enigma(1)/crypt(1) utility has been changed on 64 bit architectures. 109 Now it can decrypt files created from different architectures. 110 Unfortunately, it is no longer able to decrypt a cipher text 111 generated with an older version on 64 bit architectures. 112 If you have such a file, you need old utility to decrypt it. 113 11420060709: 115 The interface version of the i4b kernel part has changed. So 116 after updating the kernel sources and compiling a new kernel, 117 the i4b user space tools in "/usr/src/usr.sbin/i4b" must also 118 be rebuilt, and vice versa. 119 12020060627: 121 The XBOX kernel now defaults to the nfe(4) driver instead of 122 the nve(4) driver. Please update your configuration 123 accordingly. 124 12520060514: 126 The i386-only lnc(4) driver for the AMD Am7900 LANCE and Am79C9xx 127 PCnet family of NICs has been removed. The new le(4) driver serves 128 as an equivalent but cross-platform replacement with the pcn(4) 129 driver still providing performance-optimized support for the subset 130 of AMD Am79C971 PCnet-FAST and greater chips as before. 131 13220060511: 133 The machdep.* sysctls and the adjkerntz utility have been 134 modified a bit. The new adjkerntz utility uses the new 135 sysctl names and sysctlbyname() calls, so it may be impossible 136 to run an old /sbin/adjkerntz utility in single-user mode 137 with a new kernel. Replace the `adjkerntz -i' step before 138 `make installworld' with: 139 140 /usr/obj/usr/src/sbin/adjkerntz/adjkerntz -i 141 142 and proceed as usual with the rest of the installworld-stage 143 steps. Otherwise, you risk installing binaries with their 144 timestamp set several hours in the future, especially if 145 you are running with local time set to GMT+X hours. 146 14720060412: 148 The ip6fw utility has been removed. The behavior provided by 149 ip6fw has been in ipfw2 for a good while and the rc.d scripts 150 have been updated to deal with it. There are some rules that 151 might not migrate cleanly. Use rc.firewall6 as a template to 152 rewrite rules. 153 15420060428: 155 The puc(4) driver has been overhauled. The ebus(4) and sbus(4) 156 attachments have been removed. Make sure to configure scc(4) 157 on sparc64. Note also that by default puc(4) will use uart(4) 158 and not sio(4) for serial ports because interrupt handling has 159 been optimized for multi-port serial cards and only uart(4) 160 implements the interface to support it. 161 16220060330: 163 The scc(4) driver replaces puc(4) for Serial Communications 164 Controllers (SCCs) like the Siemens SAB82532 and the Zilog 165 Z8530. On sparc64, it is advised to add scc(4) to the kernel 166 configuration to make sure that the serial ports remain 167 functional. 168 16920060317: 170 Most world/kernel related NO_* build options changed names. 171 New knobs have common prefixes WITHOUT_*/WITH_* (modelled 172 after FreeBSD ports) and should be set in /etc/src.conf 173 (the src.conf(5) manpage is provided). Full backwards 174 compatibility is maintained for the time being though it's 175 highly recommended to start moving old options out of the 176 system-wide /etc/make.conf file into the new /etc/src.conf 177 while also properly renaming them. More conversions will 178 likely follow. Posting to current@: 179 180 http://lists.freebsd.org/pipermail/freebsd-current/2006-March/061725.html 181 18220060305: 183 The NETSMBCRYPTO kernel option has been retired because its 184 functionality is always included in NETSMB and smbfs.ko now. 185 18620060303: 187 The TDFX_LINUX kernel option was retired and replaced by the 188 tdfx_linux device. The latter can be loaded as the 3dfx_linux.ko 189 kernel module. Loading it alone should suffice to get 3dfx support 190 for Linux apps because it will pull in 3dfx.ko and linux.ko through 191 its dependencies. 192 19320060204: 194 The 'audit' group was added to support the new auditing functionality 195 in the base system. Be sure to follow the directions for updating, 196 including the requirement to run mergemaster -p. 197 19820060201: 199 The kernel ABI to file system modules was changed on i386. 200 Please make sure that your kernel and modules are in sync. 201 20220060118: 203 This actually occured some time ago, but installing the kernel 204 now also installs a bunch of symbol files for the kernel modules. 205 This increases the size of /boot/kernel to about 67Mbytes. You 206 will need twice this if you will eventually back this up to kernel.old 207 on your next install. 208 If you have a shortage of room in your root partition, you should add 209 -DINSTALL_NODEBUG to your make arguments or add INSTALL_NODEBUG="yes" 210 to your /etc/make.conf. 211 21220060113: 213 libc's malloc implementation has been replaced. This change has the 214 potential to uncover application bugs that previously went unnoticed. 215 See the malloc(3) manual page for more details. 216 21720060112: 218 The generic netgraph(4) cookie has been changed. If you upgrade 219 kernel passing this point, you also need to upgrade userland 220 and netgraph(4) utilities like ports/net/mpd or ports/net/mpd4. 221 22220060106: 223 si(4)'s device files now contain the unit number. 224 Uses of {cua,tty}A[0-9a-f] should be replaced by {cua,tty}A0[0-9a-f]. 225 22620060106: 227 The kernel ABI was mostly destroyed due to a change in the size 228 of struct lock_object which is nested in other structures such 229 as mutexes which are nested in all sorts of other structures. 230 Make sure your kernel and modules are in sync. 231 23220051231: 233 The page coloring algorithm in the VM subsystem was converted 234 from tuning with kernel options to autotuning. Please remove 235 any PQ_* option except PQ_NOOPT from your kernel config. 236 23720051211: 238 The net80211-related tools in the tools/tools/ath directory 239 have been moved to tools/tools/net80211 and renamed with a 240 "wlan" prefix. Scripts that use them should be adjusted 241 accordingly. 242 24320051202: 244 Scripts in the local_startup directories (as defined in 245 /etc/defaults/rc.conf) that have the new rc.d semantics will 246 now be run as part of the base system rcorder. If there are 247 errors or problems with one of these local scripts, it could 248 cause boot problems. If you encounter such problems, boot in 249 single user mode, remove that script from the */rc.d directory. 250 Please report the problem to the port's maintainer, and the 251 freebsd-ports@freebsd.org mailing list. 252 25320051129: 254 The nodev mount option was deprecated in RELENG_6 (where it 255 was a no-op), and is now unsupported. If you have nodev or dev listed 256 in /etc/fstab, remove it, otherwise it will result in a mount error. 257 25820051129: 259 ABI between ipfw(4) and ipfw(8) has been changed. You need 260 to rebuild ipfw(8) when rebuilding kernel. 261 26220051108: 263 rp(4)'s device files now contain the unit number. 264 Uses of {cua,tty}R[0-9a-f] should be replaced by {cua,tty}R0[0-9a-f]. 265 26620051029: 267 /etc/rc.d/ppp-user has been renamed to /etc/rc.d/ppp. 268 Its /etc/rc.conf.d configuration file has been `ppp' from 269 the beginning, and hence there is no need to touch it. 270 27120051014: 272 Now most modules get their build-time options from the kernel 273 configuration file. A few modules still have fixed options 274 due to their non-conformant implementation, but they will be 275 corrected eventually. You may need to review the options of 276 the modules in use, explicitly specify the non-default options 277 in the kernel configuration file, and rebuild the kernel and 278 modules afterwards. 279 28020051001: 281 kern.polling.enable sysctl MIB is now deprecated. Use ifconfig(8) 282 to turn polling(4) on your interfaces. 283 28420050927: 285 The old bridge(4) implementation was retired. The new 286 if_bridge(4) serves as a full functional replacement. 287 28820050722: 289 The ai_addrlen of a struct addrinfo was changed to a socklen_t 290 to conform to POSIX-2001. This change broke an ABI 291 compatibility on 64 bit architecture. You have to recompile 292 userland programs that use getaddrinfo(3) on 64 bit 293 architecture. 294 29520050711: 296 RELENG_6 branched here. 297 29820050629: 299 The pccard_ifconfig rc.conf variable has been removed and a new 300 variable, ifconfig_DEFAULT has been introduced. Unlike 301 pccard_ifconfig, ifconfig_DEFAULT applies to ALL interfaces that 302 do not have ifconfig_ifn entries rather than just those in 303 removable_interfaces. 304 30520050616: 306 Some previous versions of PAM have permitted the use of 307 non-absolute paths in /etc/pam.conf or /etc/pam.d/* when referring 308 to third party PAM modules in /usr/local/lib. A change has been 309 made to require the use of absolute paths in order to avoid 310 ambiguity and dependence on library path configuration, which may 311 affect existing configurations. 312 31320050610: 314 Major changes to network interface API. All drivers must be 315 recompiled. Drivers not in the base system will need to be 316 updated to the new APIs. 317 31820050609: 319 Changes were made to kinfo_proc in sys/user.h. Please recompile 320 userland, or commands like `fstat', `pkill', `ps', `top' and `w' 321 will not behave correctly. 322 323 The API and ABI for hwpmc(4) have changed with the addition 324 of sampling support. Please recompile lib/libpmc(3) and 325 usr.sbin/{pmcstat,pmccontrol}. 326 32720050606: 328 The OpenBSD dhclient was imported in place of the ISC dhclient 329 and the network interface configuration scripts were updated 330 accordingly. If you use DHCP to configure your interfaces, you 331 must now run devd. Also, DNS updating was lost so you will need 332 to find a workaround if you use this feature. 333 334 The '_dhcp' user was added to support the OpenBSD dhclient. Be 335 sure to run mergemaster -p (like you are supposed to do every time 336 anyway). 337 33820050605: 339 if_bridge was added to the tree. This has changed struct ifnet. 340 Please recompile userland and all network related modules. 341 34220050603: 343 The n_net of a struct netent was changed to an uint32_t, and 344 1st argument of getnetbyaddr() was changed to an uint32_t, to 345 conform to POSIX-2001. These changes broke an ABI 346 compatibility on 64 bit architecture. With these changes, 347 shlib major of libpcap was bumped. You have to recompile 348 userland programs that use getnetbyaddr(3), getnetbyname(3), 349 getnetent(3) and/or libpcap on 64 bit architecture. 350 35120050528: 352 Kernel parsing of extra options on '#!' first lines of shell 353 scripts has changed. Lines with multiple options likely will 354 fail after this date. For full details, please see 355 http://people.freebsd.org/~gad/Updating-20050528.txt 356 35720050503: 358 The packet filter (pf) code has been updated to OpenBSD 3.7 359 Please note the changed anchor syntax and the fact that 360 authpf(8) now needs a mounted fdescfs(5) to function. 361 36220050415: 363 The NO_MIXED_MODE kernel option has been removed from the i386 364 amd64 platforms as its use has been superceded by the new local 365 APIC timer code. Any kernel config files containing this option 366 should be updated. 367 36820050227: 369 The on-disk format of LC_CTYPE files was changed to be machine 370 independent. Please make sure NOT to use NO_CLEAN buildworld 371 when crossing this point. Crossing this point also requires 372 recompile or reinstall of all locale depended packages. 373 37420050225: 375 The ifi_epoch member of struct if_data has been changed to 376 contain the uptime at which the interface was created or the 377 statistics zeroed rather then the wall clock time because 378 wallclock time may go backwards. This should have no impact 379 unless an snmp implementation is using this value (I know of 380 none at this point.) 381 38220050224: 383 The acpi_perf and acpi_throttle drivers are now part of the 384 acpi(4) main module. They are no longer built separately. 385 38620050223: 387 The layout of struct image_params has changed. You have to 388 recompile all compatibility modules (linux, svr4, etc) for use 389 with the new kernel. 390 39120050223: 392 The p4tcc driver has been merged into cpufreq(4). This makes 393 "options CPU_ENABLE_TCC" obsolete. Please load cpufreq.ko or 394 compile in "device cpufreq" to restore this functionality. 395 39620050220: 397 The responsibility of recomputing the file system summary of 398 a SoftUpdates-enabled dirty volume has been transferred to the 399 background fsck. A rebuild of fsck(8) utility is recommended 400 if you have updated the kernel. 401 402 To get the old behavior (recompute file system summary at mount 403 time), you can set vfs.ffs.compute_summary_at_mount=1 before 404 mounting the new volume. 405 40620050206: 407 The cpufreq import is complete. As part of this, the sysctls for 408 acpi(4) throttling have been removed. The power_profile script 409 has been updated, so you can use performance/economy_cpu_freq in 410 rc.conf(5) to set AC on/offline cpu frequencies. 411 41220050206: 413 NG_VERSION has been increased. Recompiling kernel (or ng_socket.ko) 414 requires recompiling libnetgraph and userland netgraph utilities. 415 41620050114: 417 Support for abbreviated forms of a number of ipfw options is 418 now deprecated. Warnings are printed to stderr indicating the 419 correct full form when a match occurs. Some abbreviations may 420 be supported at a later date based on user feedback. To be 421 considered for support, abbreviations must be in use prior to 422 this commit and unlikely to be confused with current key words. 423 42420041221: 425 By a popular demand, a lot of NOFOO options were renamed 426 to NO_FOO (see bsd.compat.mk for a full list). The old 427 spellings are still supported, but will cause annoying 428 warnings on stderr. Make sure you upgrade properly (see 429 the COMMON ITEMS: section later in this file). 430 43120041219: 432 Auto-loading of ancillary wlan modules such as wlan_wep has 433 been temporarily disabled; you need to statically configure 434 the modules you need into your kernel or explicitly load them 435 prior to use. Specifically, if you intend to use WEP encryption 436 with an 802.11 device load/configure wlan_wep; if you want to 437 use WPA with the ath driver load/configure wlan_tkip, wlan_ccmp, 438 and wlan_xauth as required. 439 44020041213: 441 The behaviour of ppp(8) has changed slightly. If lqr is enabled 442 (``enable lqr''), older versions would revert to LCP ECHO mode on 443 negotiation failure. Now, ``enable echo'' is required for this 444 behaviour. The ppp version number has been bumped to 3.4.2 to 445 reflect the change. 446 44720041201: 448 The wlan support has been updated to split the crypto support 449 into separate modules. For static WEP you must configure the 450 wlan_wep module in your system or build and install the module 451 in place where it can be loaded (the kernel will auto-load 452 the module when a wep key is configured). 453 45420041201: 455 The ath driver has been updated to split the tx rate control 456 algorithm into a separate module. You need to include either 457 ath_rate_onoe or ath_rate_amrr when configuring the kernel. 458 45920041116: 460 Support for systems with an 80386 CPU has been removed. Please 461 use FreeBSD 5.x or earlier on systems with an 80386. 462 46320041110: 464 We have had a hack which would mount the root filesystem 465 R/W if the device were named 'md*'. As part of the vnode 466 work I'm doing I have had to remove this hack. People 467 building systems which use preloaded MD root filesystems 468 may need to insert a "/sbin/mount -u -o rw /dev/md0 /" in 469 their /etc/rc scripts. 470 47120041104: 472 FreeBSD 5.3 shipped here. 473 47420041102: 475 The size of struct tcpcb has changed again due to the removal 476 of RFC1644 T/TCP. You have to recompile userland programs that 477 read kmem for tcp sockets directly (netstat, sockstat, etc.) 478 47920041022: 480 The size of struct tcpcb has changed. You have to recompile 481 userland programs that read kmem for tcp sockets directly 482 (netstat, sockstat, etc.) 483 48420041016: 485 RELENG_5 branched here. For older entries, please see updating 486 in the RELENG_5 branch. 487 488COMMON ITEMS: 489 490 General Notes 491 ------------- 492 Avoid using make -j when upgrading. From time to time in the 493 past there have been problems using -j with buildworld and/or 494 installworld. This is especially true when upgrading between 495 "distant" versions (eg one that cross a major release boundary 496 or several minor releases, or when several months have passed 497 on the -current branch). 498 499 Sometimes, obscure build problems are the result of environment 500 poisoning. This can happen because the make utility reads its 501 environment when searching for values for global variables. 502 To run your build attempts in an "environmental clean room", 503 prefix all make commands with 'env -i '. See the env(1) manual 504 page for more details. 505 506 When upgrading from one major version to another it is generally 507 best to upgrade to the latest code in the currently installed branch 508 first, then do an upgrade to the new branch. This is the best-tested 509 upgrade path, and has the highest probability of being successful. 510 Please try this approach before reporting problems with a major 511 version upgrade. 512 513 To build a kernel 514 ----------------- 515 If you are updating from a prior version of FreeBSD (even one just 516 a few days old), you should follow this procedure. It is the most 517 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld, 518 519 make kernel-toolchain 520 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE 521 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE 522 523 To test a kernel once 524 --------------------- 525 If you just want to boot a kernel once (because you are not sure 526 if it works, or if you want to boot a known bad kernel to provide 527 debugging information) run 528 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel 529 nextboot -k testkernel 530 531 To just build a kernel when you know that it won't mess you up 532 -------------------------------------------------------------- 533 This assumes you are already running a 5.X system. Replace 534 ${arch} with the architecture of your machine (e.g. "i386", 535 "alpha", "amd64", "ia64", "pc98", "sparc64", etc). 536 537 cd src/sys/${arch}/conf 538 config KERNEL_NAME_HERE 539 cd ../compile/KERNEL_NAME_HERE 540 make depend 541 make 542 make install 543 544 If this fails, go to the "To build a kernel" section. 545 546 To rebuild everything and install it on the current system. 547 ----------------------------------------------------------- 548 # Note: sometimes if you are running current you gotta do more than 549 # is listed here if you are upgrading from a really old current. 550 551 <make sure you have good level 0 dumps> 552 make buildworld 553 make kernel KERNCONF=YOUR_KERNEL_HERE 554 [1] 555 <reboot in single user> [3] 556 mergemaster -p [5] 557 make installworld 558 make delete-old 559 mergemaster [4] 560 <reboot> 561 562 563 To cross-install current onto a separate partition 564 -------------------------------------------------- 565 # In this approach we use a separate partition to hold 566 # current's root, 'usr', and 'var' directories. A partition 567 # holding "/", "/usr" and "/var" should be about 2GB in 568 # size. 569 570 <make sure you have good level 0 dumps> 571 <boot into -stable> 572 make buildworld 573 make buildkernel KERNCONF=YOUR_KERNEL_HERE 574 <maybe newfs current's root partition> 575 <mount current's root partition on directory ${CURRENT_ROOT}> 576 make installworld DESTDIR=${CURRENT_ROOT} 577 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd 578 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT} 579 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd 580 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition> 581 <reboot into current> 582 <do a "native" rebuild/install as described in the previous section> 583 <maybe install compatibility libraries from src/lib/compat> 584 <reboot> 585 586 587 To upgrade in-place from 5.x-stable to current 588 ---------------------------------------------- 589 <make sure you have good level 0 dumps> 590 make buildworld [9] 591 make kernel KERNCONF=YOUR_KERNEL_HERE [8] 592 [1] 593 <reboot in single user> [3] 594 mergemaster -p [5] 595 make installworld 596 make delete-old 597 mergemaster -i [4] 598 <reboot> 599 600 Make sure that you've read the UPDATING file to understand the 601 tweaks to various things you need. At this point in the life 602 cycle of current, things change often and you are on your own 603 to cope. The defaults can also change, so please read ALL of 604 the UPDATING entries. 605 606 Also, if you are tracking -current, you must be subscribed to 607 freebsd-current@freebsd.org. Make sure that before you update 608 your sources that you have read and understood all the recent 609 messages there. If in doubt, please track -stable which has 610 much fewer pitfalls. 611 612 [1] If you have third party modules, such as vmware, you 613 should disable them at this point so they don't crash your 614 system on reboot. 615 616 [3] From the bootblocks, boot -s, and then do 617 fsck -p 618 mount -u / 619 mount -a 620 cd src 621 adjkerntz -i # if CMOS is wall time 622 Also, when doing a major release upgrade, it is required that 623 you boot into single user mode to do the installworld. 624 625 [4] Note: This step is non-optional. Failure to do this step 626 can result in a significant reduction in the functionality of the 627 system. Attempting to do it by hand is not recommended and those 628 that pursue this avenue should read this file carefully, as well 629 as the archives of freebsd-current and freebsd-hackers mailing lists 630 for potential gotchas. 631 632 [5] Usually this step is a noop. However, from time to time 633 you may need to do this if you get unknown user in the following 634 step. It never hurts to do it all the time. You may need to 635 install a new mergemaster (cd src/usr.sbin/mergemaster && make 636 install) after the buildworld before this step if you last updated 637 from current before 20020224 or from -stable before 20020408. 638 639 [8] In order to have a kernel that can run the 4.x binaries 640 needed to do an installworld, you must include the COMPAT_FREEBSD4 641 option in your kernel. Failure to do so may leave you with a system 642 that is hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 643 is required to run the 5.x binaries on more recent kernels. 644 645 Make sure that you merge any new devices from GENERIC since the 646 last time you updated your kernel config file. 647 648 [9] When checking out sources, you must include the -P flag to have 649 cvs prune empty directories. 650 651 If CPUTYPE is defined in your /etc/make.conf, make sure to use the 652 "?=" instead of the "=" assignment operator, so that buildworld can 653 override the CPUTYPE if it needs to. 654 655 MAKEOBJDIRPREFIX must be defined in an environment variable, and 656 not on the command line, or in /etc/make.conf. buildworld will 657 warn if it is improperly defined. 658FORMAT: 659 660This file contains a list, in reverse chronological order, of major 661breakages in tracking -current. Not all things will be listed here, 662and it only starts on October 16, 2004. Updating files can found in 663previous releases if your system is older than this. 664 665Copyright information: 666 667Copyright 1998-2005 M. Warner Losh. All Rights Reserved. 668 669Redistribution, publication, translation and use, with or without 670modification, in full or in part, in any form or format of this 671document are permitted without further permission from the author. 672 673THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR 674IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 675WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 676DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT, 677INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 678(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 679SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 680HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 681STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 682IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 683POSSIBILITY OF SUCH DAMAGE. 684 685If you find this document useful, and you want to, you may buy the 686author a beer. 687 688Contact Warner Losh if you have any questions about your use of 689this document. 690 691$FreeBSD: head/UPDATING 165234 2006-12-14 23:10:59Z jdp $ 692