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 2420061221: 25 Support for PCI Message Signalled Interrupts has been 26 re-enabled in the bge driver, only for those chips which are 27 believed to support it properly. If there are any problems, 28 MSI can be disabled completely by setting the 29 'hw.pci.enable_msi' and 'hw.pci.enable_msix' tunables to 0 30 in the loader. 31 3220061214: 33 Support for PCI Message Signalled Interrupts has been 34 disabled again in the bge driver. Many revisions of the 35 hardware fail to support it properly. Support can be 36 re-enabled by removing the #define of BGE_DISABLE_MSI in 37 "src/sys/dev/bge/if_bge.c". 38 3920061214: 40 Support for PCI Message Signalled Interrupts has been added 41 to the bge driver. If there are any problems, MSI can be 42 disabled completely by setting the 'hw.pci.enable_msi' and 43 'hw.pci.enable_msix' tunables to 0 in the loader. 44 4520061205: 46 The removal of several facets of the experimental Threading 47 system from the kernel means that the proc and thread structures 48 have changed quite a bit. I suggest all kernel modules that might 49 reference these structures be recompiled.. Especially the 50 linux module. 51 5220061126: 53 Sound infrastructure has been updated with various fixes and 54 improvements. Most of the changes are pretty much transparent, 55 with exceptions of followings: 56 1) All sound driver specific sysctls (hw.snd.pcm%d.*) have been 57 moved to their own dev sysctl nodes, for example: 58 hw.snd.pcm0.vchans -> dev.pcm.0.vchans 59 2) /dev/dspr%d.%d has been deprecated. Each channel now has its 60 own chardev in the form of "dsp%d.<function>%d", where <function> 61 is p = playback, r = record and v = virtual, respectively. Users 62 are encouraged to use these devs instead of (old) "/dev/dsp%d.%d". 63 This does not affect those who are using "/dev/dsp". 64 6520061122: 66 The following binaries have been disconnected from the build: 67 mount_devfs, mount_ext2fs, mount_fdescfs, mount_procfs, mount_linprocfs, 68 and mount_std. The functionality of these programs has been 69 moved into the mount program. For example, to mount a devfs 70 filesystem, instead of using mount_devfs, use: "mount -t devfs". 71 This does not affect entries in /etc/fstab, since entries in 72 /etc/fstab are always processed with "mount -t fstype". 73 7420061113: 75 Support for PCI Message Signalled Interrupts on i386 and amd64 76 has been added to the kernel and various drivers will soon be 77 updated to use MSI when it is available. If there are any problems, 78 MSI can be disabled completely by setting the 'hw.pci.enable_msi' 79 and 'hw.pci.enable_msix' tunables to 0 in the loader. 80 8120061110: 82 The MUTEX_PROFILING option has been renamed to LOCK_PROFILING. 83 The lockmgr object layout has been changed as a result of having 84 a lock_object embedded in it. As a consequence all file system 85 kernel modules must be re-compiled. The mutex profiling man page 86 has not yet been updated to reflect this change. 87 8820061026: 89 KSE in the kernel has now been made optional and turned on by 90 default. Use 'nooption KSE' in your kernel config to turn it 91 off. All kernel modules *must* be recompiled after this change. 92 There-after, modules from a KSE kernel should be compatible with 93 modules from a NOKSE kernel due to the temporary padding fields 94 added to 'struct proc'. 95 9620060929: 97 mrouted and its utilities have been removed from the base system. 98 9920060927: 100 Some ioctl(2) command codes have changed. Full backward ABI 101 compatibility is provided if the "options COMPAT_FREEBSD6" is 102 present in the kernel configuration file. Make sure to add 103 this option to your kernel config file, or recompile X.Org 104 and the rest of ports; otherwise they may refuse to work. 105 10620060924: 107 tcpslice has been removed from the base system. 108 10920060913: 110 The sizes of struct tcpcb (and struct xtcpcb) have changed due to 111 the rewrite of TCP syncookies. Tools like netstat, sockstat, and 112 systat needs to be rebuilt. 113 11420060903: 115 libpcap updated to v0.9.4 and tcpdump to v3.9.4 116 11720060816: 118 The IPFIREWALL_FORWARD_EXTENDED option is gone and the behaviour 119 for IPFIREWALL_FORWARD is now as it was before when it was first 120 committed and for years after. The behaviour is now ON. 121 12220060725: 123 enigma(1)/crypt(1) utility has been changed on 64 bit architectures. 124 Now it can decrypt files created from different architectures. 125 Unfortunately, it is no longer able to decrypt a cipher text 126 generated with an older version on 64 bit architectures. 127 If you have such a file, you need old utility to decrypt it. 128 12920060709: 130 The interface version of the i4b kernel part has changed. So 131 after updating the kernel sources and compiling a new kernel, 132 the i4b user space tools in "/usr/src/usr.sbin/i4b" must also 133 be rebuilt, and vice versa. 134 13520060627: 136 The XBOX kernel now defaults to the nfe(4) driver instead of 137 the nve(4) driver. Please update your configuration 138 accordingly. 139 14020060514: 141 The i386-only lnc(4) driver for the AMD Am7900 LANCE and Am79C9xx 142 PCnet family of NICs has been removed. The new le(4) driver serves 143 as an equivalent but cross-platform replacement with the pcn(4) 144 driver still providing performance-optimized support for the subset 145 of AMD Am79C971 PCnet-FAST and greater chips as before. 146 14720060511: 148 The machdep.* sysctls and the adjkerntz utility have been 149 modified a bit. The new adjkerntz utility uses the new 150 sysctl names and sysctlbyname() calls, so it may be impossible 151 to run an old /sbin/adjkerntz utility in single-user mode 152 with a new kernel. Replace the `adjkerntz -i' step before 153 `make installworld' with: 154 155 /usr/obj/usr/src/sbin/adjkerntz/adjkerntz -i 156 157 and proceed as usual with the rest of the installworld-stage 158 steps. Otherwise, you risk installing binaries with their 159 timestamp set several hours in the future, especially if 160 you are running with local time set to GMT+X hours. 161 16220060412: 163 The ip6fw utility has been removed. The behavior provided by 164 ip6fw has been in ipfw2 for a good while and the rc.d scripts 165 have been updated to deal with it. There are some rules that 166 might not migrate cleanly. Use rc.firewall6 as a template to 167 rewrite rules. 168 16920060428: 170 The puc(4) driver has been overhauled. The ebus(4) and sbus(4) 171 attachments have been removed. Make sure to configure scc(4) 172 on sparc64. Note also that by default puc(4) will use uart(4) 173 and not sio(4) for serial ports because interrupt handling has 174 been optimized for multi-port serial cards and only uart(4) 175 implements the interface to support it. 176 17720060330: 178 The scc(4) driver replaces puc(4) for Serial Communications 179 Controllers (SCCs) like the Siemens SAB82532 and the Zilog 180 Z8530. On sparc64, it is advised to add scc(4) to the kernel 181 configuration to make sure that the serial ports remain 182 functional. 183 18420060317: 185 Most world/kernel related NO_* build options changed names. 186 New knobs have common prefixes WITHOUT_*/WITH_* (modelled 187 after FreeBSD ports) and should be set in /etc/src.conf 188 (the src.conf(5) manpage is provided). Full backwards 189 compatibility is maintained for the time being though it's 190 highly recommended to start moving old options out of the 191 system-wide /etc/make.conf file into the new /etc/src.conf 192 while also properly renaming them. More conversions will 193 likely follow. Posting to current@: 194 195 http://lists.freebsd.org/pipermail/freebsd-current/2006-March/061725.html 196 19720060305: 198 The NETSMBCRYPTO kernel option has been retired because its 199 functionality is always included in NETSMB and smbfs.ko now. 200 20120060303: 202 The TDFX_LINUX kernel option was retired and replaced by the 203 tdfx_linux device. The latter can be loaded as the 3dfx_linux.ko 204 kernel module. Loading it alone should suffice to get 3dfx support 205 for Linux apps because it will pull in 3dfx.ko and linux.ko through 206 its dependencies. 207 20820060204: 209 The 'audit' group was added to support the new auditing functionality 210 in the base system. Be sure to follow the directions for updating, 211 including the requirement to run mergemaster -p. 212 21320060201: 214 The kernel ABI to file system modules was changed on i386. 215 Please make sure that your kernel and modules are in sync. 216 21720060118: 218 This actually occured some time ago, but installing the kernel 219 now also installs a bunch of symbol files for the kernel modules. 220 This increases the size of /boot/kernel to about 67Mbytes. You 221 will need twice this if you will eventually back this up to kernel.old 222 on your next install. 223 If you have a shortage of room in your root partition, you should add 224 -DINSTALL_NODEBUG to your make arguments or add INSTALL_NODEBUG="yes" 225 to your /etc/make.conf. 226 22720060113: 228 libc's malloc implementation has been replaced. This change has the 229 potential to uncover application bugs that previously went unnoticed. 230 See the malloc(3) manual page for more details. 231 23220060112: 233 The generic netgraph(4) cookie has been changed. If you upgrade 234 kernel passing this point, you also need to upgrade userland 235 and netgraph(4) utilities like ports/net/mpd or ports/net/mpd4. 236 23720060106: 238 si(4)'s device files now contain the unit number. 239 Uses of {cua,tty}A[0-9a-f] should be replaced by {cua,tty}A0[0-9a-f]. 240 24120060106: 242 The kernel ABI was mostly destroyed due to a change in the size 243 of struct lock_object which is nested in other structures such 244 as mutexes which are nested in all sorts of other structures. 245 Make sure your kernel and modules are in sync. 246 24720051231: 248 The page coloring algorithm in the VM subsystem was converted 249 from tuning with kernel options to autotuning. Please remove 250 any PQ_* option except PQ_NOOPT from your kernel config. 251 25220051211: 253 The net80211-related tools in the tools/tools/ath directory 254 have been moved to tools/tools/net80211 and renamed with a 255 "wlan" prefix. Scripts that use them should be adjusted 256 accordingly. 257 25820051202: 259 Scripts in the local_startup directories (as defined in 260 /etc/defaults/rc.conf) that have the new rc.d semantics will 261 now be run as part of the base system rcorder. If there are 262 errors or problems with one of these local scripts, it could 263 cause boot problems. If you encounter such problems, boot in 264 single user mode, remove that script from the */rc.d directory. 265 Please report the problem to the port's maintainer, and the 266 freebsd-ports@freebsd.org mailing list. 267 26820051129: 269 The nodev mount option was deprecated in RELENG_6 (where it 270 was a no-op), and is now unsupported. If you have nodev or dev listed 271 in /etc/fstab, remove it, otherwise it will result in a mount error. 272 27320051129: 274 ABI between ipfw(4) and ipfw(8) has been changed. You need 275 to rebuild ipfw(8) when rebuilding kernel. 276 27720051108: 278 rp(4)'s device files now contain the unit number. 279 Uses of {cua,tty}R[0-9a-f] should be replaced by {cua,tty}R0[0-9a-f]. 280 28120051029: 282 /etc/rc.d/ppp-user has been renamed to /etc/rc.d/ppp. 283 Its /etc/rc.conf.d configuration file has been `ppp' from 284 the beginning, and hence there is no need to touch it. 285 28620051014: 287 Now most modules get their build-time options from the kernel 288 configuration file. A few modules still have fixed options 289 due to their non-conformant implementation, but they will be 290 corrected eventually. You may need to review the options of 291 the modules in use, explicitly specify the non-default options 292 in the kernel configuration file, and rebuild the kernel and 293 modules afterwards. 294 29520051001: 296 kern.polling.enable sysctl MIB is now deprecated. Use ifconfig(8) 297 to turn polling(4) on your interfaces. 298 29920050927: 300 The old bridge(4) implementation was retired. The new 301 if_bridge(4) serves as a full functional replacement. 302 30320050722: 304 The ai_addrlen of a struct addrinfo was changed to a socklen_t 305 to conform to POSIX-2001. This change broke an ABI 306 compatibility on 64 bit architecture. You have to recompile 307 userland programs that use getaddrinfo(3) on 64 bit 308 architecture. 309 31020050711: 311 RELENG_6 branched here. 312 31320050629: 314 The pccard_ifconfig rc.conf variable has been removed and a new 315 variable, ifconfig_DEFAULT has been introduced. Unlike 316 pccard_ifconfig, ifconfig_DEFAULT applies to ALL interfaces that 317 do not have ifconfig_ifn entries rather than just those in 318 removable_interfaces. 319 32020050616: 321 Some previous versions of PAM have permitted the use of 322 non-absolute paths in /etc/pam.conf or /etc/pam.d/* when referring 323 to third party PAM modules in /usr/local/lib. A change has been 324 made to require the use of absolute paths in order to avoid 325 ambiguity and dependence on library path configuration, which may 326 affect existing configurations. 327 32820050610: 329 Major changes to network interface API. All drivers must be 330 recompiled. Drivers not in the base system will need to be 331 updated to the new APIs. 332 33320050609: 334 Changes were made to kinfo_proc in sys/user.h. Please recompile 335 userland, or commands like `fstat', `pkill', `ps', `top' and `w' 336 will not behave correctly. 337 338 The API and ABI for hwpmc(4) have changed with the addition 339 of sampling support. Please recompile lib/libpmc(3) and 340 usr.sbin/{pmcstat,pmccontrol}. 341 34220050606: 343 The OpenBSD dhclient was imported in place of the ISC dhclient 344 and the network interface configuration scripts were updated 345 accordingly. If you use DHCP to configure your interfaces, you 346 must now run devd. Also, DNS updating was lost so you will need 347 to find a workaround if you use this feature. 348 349 The '_dhcp' user was added to support the OpenBSD dhclient. Be 350 sure to run mergemaster -p (like you are supposed to do every time 351 anyway). 352 35320050605: 354 if_bridge was added to the tree. This has changed struct ifnet. 355 Please recompile userland and all network related modules. 356 35720050603: 358 The n_net of a struct netent was changed to an uint32_t, and 359 1st argument of getnetbyaddr() was changed to an uint32_t, to 360 conform to POSIX-2001. These changes broke an ABI 361 compatibility on 64 bit architecture. With these changes, 362 shlib major of libpcap was bumped. You have to recompile 363 userland programs that use getnetbyaddr(3), getnetbyname(3), 364 getnetent(3) and/or libpcap on 64 bit architecture. 365 36620050528: 367 Kernel parsing of extra options on '#!' first lines of shell 368 scripts has changed. Lines with multiple options likely will 369 fail after this date. For full details, please see 370 http://people.freebsd.org/~gad/Updating-20050528.txt 371 37220050503: 373 The packet filter (pf) code has been updated to OpenBSD 3.7 374 Please note the changed anchor syntax and the fact that 375 authpf(8) now needs a mounted fdescfs(5) to function. 376 37720050415: 378 The NO_MIXED_MODE kernel option has been removed from the i386 379 amd64 platforms as its use has been superceded by the new local 380 APIC timer code. Any kernel config files containing this option 381 should be updated. 382 38320050227: 384 The on-disk format of LC_CTYPE files was changed to be machine 385 independent. Please make sure NOT to use NO_CLEAN buildworld 386 when crossing this point. Crossing this point also requires 387 recompile or reinstall of all locale depended packages. 388 38920050225: 390 The ifi_epoch member of struct if_data has been changed to 391 contain the uptime at which the interface was created or the 392 statistics zeroed rather then the wall clock time because 393 wallclock time may go backwards. This should have no impact 394 unless an snmp implementation is using this value (I know of 395 none at this point.) 396 39720050224: 398 The acpi_perf and acpi_throttle drivers are now part of the 399 acpi(4) main module. They are no longer built separately. 400 40120050223: 402 The layout of struct image_params has changed. You have to 403 recompile all compatibility modules (linux, svr4, etc) for use 404 with the new kernel. 405 40620050223: 407 The p4tcc driver has been merged into cpufreq(4). This makes 408 "options CPU_ENABLE_TCC" obsolete. Please load cpufreq.ko or 409 compile in "device cpufreq" to restore this functionality. 410 41120050220: 412 The responsibility of recomputing the file system summary of 413 a SoftUpdates-enabled dirty volume has been transferred to the 414 background fsck. A rebuild of fsck(8) utility is recommended 415 if you have updated the kernel. 416 417 To get the old behavior (recompute file system summary at mount 418 time), you can set vfs.ffs.compute_summary_at_mount=1 before 419 mounting the new volume. 420 42120050206: 422 The cpufreq import is complete. As part of this, the sysctls for 423 acpi(4) throttling have been removed. The power_profile script 424 has been updated, so you can use performance/economy_cpu_freq in 425 rc.conf(5) to set AC on/offline cpu frequencies. 426 42720050206: 428 NG_VERSION has been increased. Recompiling kernel (or ng_socket.ko) 429 requires recompiling libnetgraph and userland netgraph utilities. 430 43120050114: 432 Support for abbreviated forms of a number of ipfw options is 433 now deprecated. Warnings are printed to stderr indicating the 434 correct full form when a match occurs. Some abbreviations may 435 be supported at a later date based on user feedback. To be 436 considered for support, abbreviations must be in use prior to 437 this commit and unlikely to be confused with current key words. 438 43920041221: 440 By a popular demand, a lot of NOFOO options were renamed 441 to NO_FOO (see bsd.compat.mk for a full list). The old 442 spellings are still supported, but will cause annoying 443 warnings on stderr. Make sure you upgrade properly (see 444 the COMMON ITEMS: section later in this file). 445 44620041219: 447 Auto-loading of ancillary wlan modules such as wlan_wep has 448 been temporarily disabled; you need to statically configure 449 the modules you need into your kernel or explicitly load them 450 prior to use. Specifically, if you intend to use WEP encryption 451 with an 802.11 device load/configure wlan_wep; if you want to 452 use WPA with the ath driver load/configure wlan_tkip, wlan_ccmp, 453 and wlan_xauth as required. 454 45520041213: 456 The behaviour of ppp(8) has changed slightly. If lqr is enabled 457 (``enable lqr''), older versions would revert to LCP ECHO mode on 458 negotiation failure. Now, ``enable echo'' is required for this 459 behaviour. The ppp version number has been bumped to 3.4.2 to 460 reflect the change. 461 46220041201: 463 The wlan support has been updated to split the crypto support 464 into separate modules. For static WEP you must configure the 465 wlan_wep module in your system or build and install the module 466 in place where it can be loaded (the kernel will auto-load 467 the module when a wep key is configured). 468 46920041201: 470 The ath driver has been updated to split the tx rate control 471 algorithm into a separate module. You need to include either 472 ath_rate_onoe or ath_rate_amrr when configuring the kernel. 473 47420041116: 475 Support for systems with an 80386 CPU has been removed. Please 476 use FreeBSD 5.x or earlier on systems with an 80386. 477 47820041110: 479 We have had a hack which would mount the root filesystem 480 R/W if the device were named 'md*'. As part of the vnode 481 work I'm doing I have had to remove this hack. People 482 building systems which use preloaded MD root filesystems 483 may need to insert a "/sbin/mount -u -o rw /dev/md0 /" in 484 their /etc/rc scripts. 485 48620041104: 487 FreeBSD 5.3 shipped here. 488 48920041102: 490 The size of struct tcpcb has changed again due to the removal 491 of RFC1644 T/TCP. You have to recompile userland programs that 492 read kmem for tcp sockets directly (netstat, sockstat, etc.) 493 49420041022: 495 The size of struct tcpcb has changed. You have to recompile 496 userland programs that read kmem for tcp sockets directly 497 (netstat, sockstat, etc.) 498 49920041016: 500 RELENG_5 branched here. For older entries, please see updating 501 in the RELENG_5 branch. 502 503COMMON ITEMS: 504 505 General Notes 506 ------------- 507 Avoid using make -j when upgrading. From time to time in the 508 past there have been problems using -j with buildworld and/or 509 installworld. This is especially true when upgrading between 510 "distant" versions (eg one that cross a major release boundary 511 or several minor releases, or when several months have passed 512 on the -current branch). 513 514 Sometimes, obscure build problems are the result of environment 515 poisoning. This can happen because the make utility reads its 516 environment when searching for values for global variables. 517 To run your build attempts in an "environmental clean room", 518 prefix all make commands with 'env -i '. See the env(1) manual 519 page for more details. 520 521 When upgrading from one major version to another it is generally 522 best to upgrade to the latest code in the currently installed branch 523 first, then do an upgrade to the new branch. This is the best-tested 524 upgrade path, and has the highest probability of being successful. 525 Please try this approach before reporting problems with a major 526 version upgrade. 527 528 To build a kernel 529 ----------------- 530 If you are updating from a prior version of FreeBSD (even one just 531 a few days old), you should follow this procedure. It is the most 532 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld, 533 534 make kernel-toolchain 535 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE 536 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE 537 538 To test a kernel once 539 --------------------- 540 If you just want to boot a kernel once (because you are not sure 541 if it works, or if you want to boot a known bad kernel to provide 542 debugging information) run 543 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel 544 nextboot -k testkernel 545 546 To just build a kernel when you know that it won't mess you up 547 -------------------------------------------------------------- 548 This assumes you are already running a 5.X system. Replace 549 ${arch} with the architecture of your machine (e.g. "i386", 550 "alpha", "amd64", "ia64", "pc98", "sparc64", etc). 551 552 cd src/sys/${arch}/conf 553 config KERNEL_NAME_HERE 554 cd ../compile/KERNEL_NAME_HERE 555 make depend 556 make 557 make install 558 559 If this fails, go to the "To build a kernel" section. 560 561 To rebuild everything and install it on the current system. 562 ----------------------------------------------------------- 563 # Note: sometimes if you are running current you gotta do more than 564 # is listed here if you are upgrading from a really old current. 565 566 <make sure you have good level 0 dumps> 567 make buildworld 568 make kernel KERNCONF=YOUR_KERNEL_HERE 569 [1] 570 <reboot in single user> [3] 571 mergemaster -p [5] 572 make installworld 573 make delete-old 574 mergemaster [4] 575 <reboot> 576 577 578 To cross-install current onto a separate partition 579 -------------------------------------------------- 580 # In this approach we use a separate partition to hold 581 # current's root, 'usr', and 'var' directories. A partition 582 # holding "/", "/usr" and "/var" should be about 2GB in 583 # size. 584 585 <make sure you have good level 0 dumps> 586 <boot into -stable> 587 make buildworld 588 make buildkernel KERNCONF=YOUR_KERNEL_HERE 589 <maybe newfs current's root partition> 590 <mount current's root partition on directory ${CURRENT_ROOT}> 591 make installworld DESTDIR=${CURRENT_ROOT} 592 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd 593 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT} 594 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd 595 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition> 596 <reboot into current> 597 <do a "native" rebuild/install as described in the previous section> 598 <maybe install compatibility libraries from src/lib/compat> 599 <reboot> 600 601 602 To upgrade in-place from 5.x-stable to current 603 ---------------------------------------------- 604 <make sure you have good level 0 dumps> 605 make buildworld [9] 606 make kernel KERNCONF=YOUR_KERNEL_HERE [8] 607 [1] 608 <reboot in single user> [3] 609 mergemaster -p [5] 610 make installworld 611 make delete-old 612 mergemaster -i [4] 613 <reboot> 614 615 Make sure that you've read the UPDATING file to understand the 616 tweaks to various things you need. At this point in the life 617 cycle of current, things change often and you are on your own 618 to cope. The defaults can also change, so please read ALL of 619 the UPDATING entries. 620 621 Also, if you are tracking -current, you must be subscribed to 622 freebsd-current@freebsd.org. Make sure that before you update 623 your sources that you have read and understood all the recent 624 messages there. If in doubt, please track -stable which has 625 much fewer pitfalls. 626 627 [1] If you have third party modules, such as vmware, you 628 should disable them at this point so they don't crash your 629 system on reboot. 630 631 [3] From the bootblocks, boot -s, and then do 632 fsck -p 633 mount -u / 634 mount -a 635 cd src 636 adjkerntz -i # if CMOS is wall time 637 Also, when doing a major release upgrade, it is required that 638 you boot into single user mode to do the installworld. 639 640 [4] Note: This step is non-optional. Failure to do this step 641 can result in a significant reduction in the functionality of the 642 system. Attempting to do it by hand is not recommended and those 643 that pursue this avenue should read this file carefully, as well 644 as the archives of freebsd-current and freebsd-hackers mailing lists 645 for potential gotchas. 646 647 [5] Usually this step is a noop. However, from time to time 648 you may need to do this if you get unknown user in the following 649 step. It never hurts to do it all the time. You may need to 650 install a new mergemaster (cd src/usr.sbin/mergemaster && make 651 install) after the buildworld before this step if you last updated 652 from current before 20020224 or from -stable before 20020408. 653 654 [8] In order to have a kernel that can run the 4.x binaries 655 needed to do an installworld, you must include the COMPAT_FREEBSD4 656 option in your kernel. Failure to do so may leave you with a system 657 that is hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 658 is required to run the 5.x binaries on more recent kernels. 659 660 Make sure that you merge any new devices from GENERIC since the 661 last time you updated your kernel config file. 662 663 [9] When checking out sources, you must include the -P flag to have 664 cvs prune empty directories. 665 666 If CPUTYPE is defined in your /etc/make.conf, make sure to use the 667 "?=" instead of the "=" assignment operator, so that buildworld can 668 override the CPUTYPE if it needs to. 669 670 MAKEOBJDIRPREFIX must be defined in an environment variable, and 671 not on the command line, or in /etc/make.conf. buildworld will 672 warn if it is improperly defined. 673FORMAT: 674 675This file contains a list, in reverse chronological order, of major 676breakages in tracking -current. Not all things will be listed here, 677and it only starts on October 16, 2004. Updating files can found in 678previous releases if your system is older than this. 679 680Copyright information: 681 682Copyright 1998-2005 M. Warner Losh. All Rights Reserved. 683 684Redistribution, publication, translation and use, with or without 685modification, in full or in part, in any form or format of this 686document are permitted without further permission from the author. 687 688THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR 689IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 690WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 691DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT, 692INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 693(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 694SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 695HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 696STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 697IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 698POSSIBILITY OF SUCH DAMAGE. 699 700If you find this document useful, and you want to, you may buy the 701author a beer. 702 703Contact Warner Losh if you have any questions about your use of 704this document. 705 706$FreeBSD$ 707