1 Updating Information for FreeBSD current users
3 This file is maintained and copyrighted by M. Warner Losh
4 <imp@village.org>. See end of file for further details. For commonly
5 done items, please see the COMMON ITEMS: section later in the file.
7 Items affecting the ports and packages system can be found in
8 /usr/ports/UPDATING. Please read that file before running
11 NOTE 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.
25 sendmail(8) has been updated to version 8.14.1. Mail filters
26 (aka, milters) compiled against the libmilter included in the
27 base operating system should be recompiled.
30 Firmwares for ipw(4) and iwi(4) are now included in the base tree.
31 In order to use them one must agree to the respective LICENSE in
32 share/doc/legal and define legal.intel_<name>.license_ack=1 via
33 loader.conf(5) or kenv(1). Make sure to deinstall the now
34 deprecated modules from the respective firmware ports.
37 The name resolution/mapping functions addr2ascii(3) and ascii2addr(3)
38 were removed from FreeBSD's libc. These originally came from INRIA
39 IPv6. Nothing in FreeBSD ever used them. They may be regarded as
40 deprecated in previous releases.
41 The AF_LINK support for getnameinfo(3) was merged from NetBSD to
42 replace it as a more portable (and re-entrant) API.
45 To support interrupt filtering a modification to the newbus API
46 has occurred, ABI was broken and __FreeBSD_version was bumped
47 to 700031. Please make sure that your kernel and modules are in
49 http://docs.freebsd.org/cgi/mid.cgi?20070221233124.GA13941
52 The IPv6 multicast forwarding code may now be loaded into GENERIC
53 kernels by loading the ip_mroute.ko module. This is built into the
54 module unless WITHOUT_INET6 or WITHOUT_INET6_SUPPORT options are
55 set; see src.conf(5) for more information.
58 The output of netstat -r has changed. Without -n, we now only
59 print a "network name" without the prefix length if the network
60 address and mask exactly match a Class A/B/C network, and an entry
61 exists in the nsswitch "networks" map.
62 With -n, we print the full unabbreviated CIDR network prefix in
63 the form "a.b.c.d/p". 0.0.0.0/0 is always printed as "default".
64 This change is in preparation for changes such as equal-cost
65 multipath, and to more generally assist operational deployment
66 of FreeBSD as a modern IPv4 router.
69 PIM has been turned on by default in the IPv4 multicast
70 routing code. The kernel option 'PIM' has now been removed.
71 PIM is now built by default if option 'MROUTING' is specified.
72 It may now be loaded into GENERIC kernels by loading the
76 Support for IPIP tunnels (VIFF_TUNNEL) in IPv4 multicast routing
77 has been removed. Its functionality may be achieved by explicitly
78 configuring gif(4) interfaces and using the 'phyint' keyword in
80 XORP does not support source-routed IPv4 multicast tunnels nor the
81 integrated IPIP tunneling, therefore it is not affected by this
82 change. The __FreeBSD_version macro has been bumped to 700030.
85 Support for PCI Message Signalled Interrupts has been
86 re-enabled in the bge driver, only for those chips which are
87 believed to support it properly. If there are any problems,
88 MSI can be disabled completely by setting the
89 'hw.pci.enable_msi' and 'hw.pci.enable_msix' tunables to 0
93 Support for PCI Message Signalled Interrupts has been
94 disabled again in the bge driver. Many revisions of the
95 hardware fail to support it properly. Support can be
96 re-enabled by removing the #define of BGE_DISABLE_MSI in
97 "src/sys/dev/bge/if_bge.c".
100 Support for PCI Message Signalled Interrupts has been added
101 to the bge driver. If there are any problems, MSI can be
102 disabled completely by setting the 'hw.pci.enable_msi' and
103 'hw.pci.enable_msix' tunables to 0 in the loader.
106 The removal of several facets of the experimental Threading
107 system from the kernel means that the proc and thread structures
108 have changed quite a bit. I suggest all kernel modules that might
109 reference these structures be recompiled.. Especially the
113 Sound infrastructure has been updated with various fixes and
114 improvements. Most of the changes are pretty much transparent,
115 with exceptions of followings:
116 1) All sound driver specific sysctls (hw.snd.pcm%d.*) have been
117 moved to their own dev sysctl nodes, for example:
118 hw.snd.pcm0.vchans -> dev.pcm.0.vchans
119 2) /dev/dspr%d.%d has been deprecated. Each channel now has its
120 own chardev in the form of "dsp%d.<function>%d", where <function>
121 is p = playback, r = record and v = virtual, respectively. Users
122 are encouraged to use these devs instead of (old) "/dev/dsp%d.%d".
123 This does not affect those who are using "/dev/dsp".
126 The following binaries have been disconnected from the build:
127 mount_devfs, mount_ext2fs, mount_fdescfs, mount_procfs, mount_linprocfs,
128 and mount_std. The functionality of these programs has been
129 moved into the mount program. For example, to mount a devfs
130 filesystem, instead of using mount_devfs, use: "mount -t devfs".
131 This does not affect entries in /etc/fstab, since entries in
132 /etc/fstab are always processed with "mount -t fstype".
135 Support for PCI Message Signalled Interrupts on i386 and amd64
136 has been added to the kernel and various drivers will soon be
137 updated to use MSI when it is available. If there are any problems,
138 MSI can be disabled completely by setting the 'hw.pci.enable_msi'
139 and 'hw.pci.enable_msix' tunables to 0 in the loader.
142 The MUTEX_PROFILING option has been renamed to LOCK_PROFILING.
143 The lockmgr object layout has been changed as a result of having
144 a lock_object embedded in it. As a consequence all file system
145 kernel modules must be re-compiled. The mutex profiling man page
146 has not yet been updated to reflect this change.
149 KSE in the kernel has now been made optional and turned on by
150 default. Use 'nooption KSE' in your kernel config to turn it
151 off. All kernel modules *must* be recompiled after this change.
152 There-after, modules from a KSE kernel should be compatible with
153 modules from a NOKSE kernel due to the temporary padding fields
154 added to 'struct proc'.
157 mrouted and its utilities have been removed from the base system.
160 Some ioctl(2) command codes have changed. Full backward ABI
161 compatibility is provided if the "options COMPAT_FREEBSD6" is
162 present in the kernel configuration file. Make sure to add
163 this option to your kernel config file, or recompile X.Org
164 and the rest of ports; otherwise they may refuse to work.
167 tcpslice has been removed from the base system.
170 The sizes of struct tcpcb (and struct xtcpcb) have changed due to
171 the rewrite of TCP syncookies. Tools like netstat, sockstat, and
172 systat needs to be rebuilt.
175 libpcap updated to v0.9.4 and tcpdump to v3.9.4
178 The IPFIREWALL_FORWARD_EXTENDED option is gone and the behaviour
179 for IPFIREWALL_FORWARD is now as it was before when it was first
180 committed and for years after. The behaviour is now ON.
183 enigma(1)/crypt(1) utility has been changed on 64 bit architectures.
184 Now it can decrypt files created from different architectures.
185 Unfortunately, it is no longer able to decrypt a cipher text
186 generated with an older version on 64 bit architectures.
187 If you have such a file, you need old utility to decrypt it.
190 The interface version of the i4b kernel part has changed. So
191 after updating the kernel sources and compiling a new kernel,
192 the i4b user space tools in "/usr/src/usr.sbin/i4b" must also
193 be rebuilt, and vice versa.
196 The XBOX kernel now defaults to the nfe(4) driver instead of
197 the nve(4) driver. Please update your configuration
201 The i386-only lnc(4) driver for the AMD Am7900 LANCE and Am79C9xx
202 PCnet family of NICs has been removed. The new le(4) driver serves
203 as an equivalent but cross-platform replacement with the pcn(4)
204 driver still providing performance-optimized support for the subset
205 of AMD Am79C971 PCnet-FAST and greater chips as before.
208 The machdep.* sysctls and the adjkerntz utility have been
209 modified a bit. The new adjkerntz utility uses the new
210 sysctl names and sysctlbyname() calls, so it may be impossible
211 to run an old /sbin/adjkerntz utility in single-user mode
212 with a new kernel. Replace the `adjkerntz -i' step before
213 `make installworld' with:
215 /usr/obj/usr/src/sbin/adjkerntz/adjkerntz -i
217 and proceed as usual with the rest of the installworld-stage
218 steps. Otherwise, you risk installing binaries with their
219 timestamp set several hours in the future, especially if
220 you are running with local time set to GMT+X hours.
223 The ip6fw utility has been removed. The behavior provided by
224 ip6fw has been in ipfw2 for a good while and the rc.d scripts
225 have been updated to deal with it. There are some rules that
226 might not migrate cleanly. Use rc.firewall6 as a template to
230 The puc(4) driver has been overhauled. The ebus(4) and sbus(4)
231 attachments have been removed. Make sure to configure scc(4)
232 on sparc64. Note also that by default puc(4) will use uart(4)
233 and not sio(4) for serial ports because interrupt handling has
234 been optimized for multi-port serial cards and only uart(4)
235 implements the interface to support it.
238 The scc(4) driver replaces puc(4) for Serial Communications
239 Controllers (SCCs) like the Siemens SAB82532 and the Zilog
240 Z8530. On sparc64, it is advised to add scc(4) to the kernel
241 configuration to make sure that the serial ports remain
245 Most world/kernel related NO_* build options changed names.
246 New knobs have common prefixes WITHOUT_*/WITH_* (modelled
247 after FreeBSD ports) and should be set in /etc/src.conf
248 (the src.conf(5) manpage is provided). Full backwards
249 compatibility is maintained for the time being though it's
250 highly recommended to start moving old options out of the
251 system-wide /etc/make.conf file into the new /etc/src.conf
252 while also properly renaming them. More conversions will
253 likely follow. Posting to current@:
255 http://lists.freebsd.org/pipermail/freebsd-current/2006-March/061725.html
258 The NETSMBCRYPTO kernel option has been retired because its
259 functionality is always included in NETSMB and smbfs.ko now.
262 The TDFX_LINUX kernel option was retired and replaced by the
263 tdfx_linux device. The latter can be loaded as the 3dfx_linux.ko
264 kernel module. Loading it alone should suffice to get 3dfx support
265 for Linux apps because it will pull in 3dfx.ko and linux.ko through
269 The 'audit' group was added to support the new auditing functionality
270 in the base system. Be sure to follow the directions for updating,
271 including the requirement to run mergemaster -p.
274 The kernel ABI to file system modules was changed on i386.
275 Please make sure that your kernel and modules are in sync.
278 This actually occured some time ago, but installing the kernel
279 now also installs a bunch of symbol files for the kernel modules.
280 This increases the size of /boot/kernel to about 67Mbytes. You
281 will need twice this if you will eventually back this up to kernel.old
282 on your next install.
283 If you have a shortage of room in your root partition, you should add
284 -DINSTALL_NODEBUG to your make arguments or add INSTALL_NODEBUG="yes"
285 to your /etc/make.conf.
288 libc's malloc implementation has been replaced. This change has the
289 potential to uncover application bugs that previously went unnoticed.
290 See the malloc(3) manual page for more details.
293 The generic netgraph(4) cookie has been changed. If you upgrade
294 kernel passing this point, you also need to upgrade userland
295 and netgraph(4) utilities like ports/net/mpd or ports/net/mpd4.
298 si(4)'s device files now contain the unit number.
299 Uses of {cua,tty}A[0-9a-f] should be replaced by {cua,tty}A0[0-9a-f].
302 The kernel ABI was mostly destroyed due to a change in the size
303 of struct lock_object which is nested in other structures such
304 as mutexes which are nested in all sorts of other structures.
305 Make sure your kernel and modules are in sync.
308 The page coloring algorithm in the VM subsystem was converted
309 from tuning with kernel options to autotuning. Please remove
310 any PQ_* option except PQ_NOOPT from your kernel config.
313 The net80211-related tools in the tools/tools/ath directory
314 have been moved to tools/tools/net80211 and renamed with a
315 "wlan" prefix. Scripts that use them should be adjusted
319 Scripts in the local_startup directories (as defined in
320 /etc/defaults/rc.conf) that have the new rc.d semantics will
321 now be run as part of the base system rcorder. If there are
322 errors or problems with one of these local scripts, it could
323 cause boot problems. If you encounter such problems, boot in
324 single user mode, remove that script from the */rc.d directory.
325 Please report the problem to the port's maintainer, and the
326 freebsd-ports@freebsd.org mailing list.
329 The nodev mount option was deprecated in RELENG_6 (where it
330 was a no-op), and is now unsupported. If you have nodev or dev listed
331 in /etc/fstab, remove it, otherwise it will result in a mount error.
334 ABI between ipfw(4) and ipfw(8) has been changed. You need
335 to rebuild ipfw(8) when rebuilding kernel.
338 rp(4)'s device files now contain the unit number.
339 Uses of {cua,tty}R[0-9a-f] should be replaced by {cua,tty}R0[0-9a-f].
342 /etc/rc.d/ppp-user has been renamed to /etc/rc.d/ppp.
343 Its /etc/rc.conf.d configuration file has been `ppp' from
344 the beginning, and hence there is no need to touch it.
347 Now most modules get their build-time options from the kernel
348 configuration file. A few modules still have fixed options
349 due to their non-conformant implementation, but they will be
350 corrected eventually. You may need to review the options of
351 the modules in use, explicitly specify the non-default options
352 in the kernel configuration file, and rebuild the kernel and
356 kern.polling.enable sysctl MIB is now deprecated. Use ifconfig(8)
357 to turn polling(4) on your interfaces.
360 The old bridge(4) implementation was retired. The new
361 if_bridge(4) serves as a full functional replacement.
364 The ai_addrlen of a struct addrinfo was changed to a socklen_t
365 to conform to POSIX-2001. This change broke an ABI
366 compatibility on 64 bit architecture. You have to recompile
367 userland programs that use getaddrinfo(3) on 64 bit
371 RELENG_6 branched here.
374 The pccard_ifconfig rc.conf variable has been removed and a new
375 variable, ifconfig_DEFAULT has been introduced. Unlike
376 pccard_ifconfig, ifconfig_DEFAULT applies to ALL interfaces that
377 do not have ifconfig_ifn entries rather than just those in
378 removable_interfaces.
381 Some previous versions of PAM have permitted the use of
382 non-absolute paths in /etc/pam.conf or /etc/pam.d/* when referring
383 to third party PAM modules in /usr/local/lib. A change has been
384 made to require the use of absolute paths in order to avoid
385 ambiguity and dependence on library path configuration, which may
386 affect existing configurations.
389 Major changes to network interface API. All drivers must be
390 recompiled. Drivers not in the base system will need to be
391 updated to the new APIs.
394 Changes were made to kinfo_proc in sys/user.h. Please recompile
395 userland, or commands like `fstat', `pkill', `ps', `top' and `w'
396 will not behave correctly.
398 The API and ABI for hwpmc(4) have changed with the addition
399 of sampling support. Please recompile lib/libpmc(3) and
400 usr.sbin/{pmcstat,pmccontrol}.
403 The OpenBSD dhclient was imported in place of the ISC dhclient
404 and the network interface configuration scripts were updated
405 accordingly. If you use DHCP to configure your interfaces, you
406 must now run devd. Also, DNS updating was lost so you will need
407 to find a workaround if you use this feature.
409 The '_dhcp' user was added to support the OpenBSD dhclient. Be
410 sure to run mergemaster -p (like you are supposed to do every time
414 if_bridge was added to the tree. This has changed struct ifnet.
415 Please recompile userland and all network related modules.
418 The n_net of a struct netent was changed to an uint32_t, and
419 1st argument of getnetbyaddr() was changed to an uint32_t, to
420 conform to POSIX-2001. These changes broke an ABI
421 compatibility on 64 bit architecture. With these changes,
422 shlib major of libpcap was bumped. You have to recompile
423 userland programs that use getnetbyaddr(3), getnetbyname(3),
424 getnetent(3) and/or libpcap on 64 bit architecture.
427 Kernel parsing of extra options on '#!' first lines of shell
428 scripts has changed. Lines with multiple options likely will
429 fail after this date. For full details, please see
430 http://people.freebsd.org/~gad/Updating-20050528.txt
433 The packet filter (pf) code has been updated to OpenBSD 3.7
434 Please note the changed anchor syntax and the fact that
435 authpf(8) now needs a mounted fdescfs(5) to function.
438 The NO_MIXED_MODE kernel option has been removed from the i386
439 amd64 platforms as its use has been superceded by the new local
440 APIC timer code. Any kernel config files containing this option
444 The on-disk format of LC_CTYPE files was changed to be machine
445 independent. Please make sure NOT to use NO_CLEAN buildworld
446 when crossing this point. Crossing this point also requires
447 recompile or reinstall of all locale depended packages.
450 The ifi_epoch member of struct if_data has been changed to
451 contain the uptime at which the interface was created or the
452 statistics zeroed rather then the wall clock time because
453 wallclock time may go backwards. This should have no impact
454 unless an snmp implementation is using this value (I know of
458 The acpi_perf and acpi_throttle drivers are now part of the
459 acpi(4) main module. They are no longer built separately.
462 The layout of struct image_params has changed. You have to
463 recompile all compatibility modules (linux, svr4, etc) for use
467 The p4tcc driver has been merged into cpufreq(4). This makes
468 "options CPU_ENABLE_TCC" obsolete. Please load cpufreq.ko or
469 compile in "device cpufreq" to restore this functionality.
472 The responsibility of recomputing the file system summary of
473 a SoftUpdates-enabled dirty volume has been transferred to the
474 background fsck. A rebuild of fsck(8) utility is recommended
475 if you have updated the kernel.
477 To get the old behavior (recompute file system summary at mount
478 time), you can set vfs.ffs.compute_summary_at_mount=1 before
479 mounting the new volume.
482 The cpufreq import is complete. As part of this, the sysctls for
483 acpi(4) throttling have been removed. The power_profile script
484 has been updated, so you can use performance/economy_cpu_freq in
485 rc.conf(5) to set AC on/offline cpu frequencies.
488 NG_VERSION has been increased. Recompiling kernel (or ng_socket.ko)
489 requires recompiling libnetgraph and userland netgraph utilities.
492 Support for abbreviated forms of a number of ipfw options is
493 now deprecated. Warnings are printed to stderr indicating the
494 correct full form when a match occurs. Some abbreviations may
495 be supported at a later date based on user feedback. To be
496 considered for support, abbreviations must be in use prior to
497 this commit and unlikely to be confused with current key words.
500 By a popular demand, a lot of NOFOO options were renamed
501 to NO_FOO (see bsd.compat.mk for a full list). The old
502 spellings are still supported, but will cause annoying
503 warnings on stderr. Make sure you upgrade properly (see
504 the COMMON ITEMS: section later in this file).
507 Auto-loading of ancillary wlan modules such as wlan_wep has
508 been temporarily disabled; you need to statically configure
509 the modules you need into your kernel or explicitly load them
510 prior to use. Specifically, if you intend to use WEP encryption
511 with an 802.11 device load/configure wlan_wep; if you want to
512 use WPA with the ath driver load/configure wlan_tkip, wlan_ccmp,
513 and wlan_xauth as required.
516 The behaviour of ppp(8) has changed slightly. If lqr is enabled
517 (``enable lqr''), older versions would revert to LCP ECHO mode on
518 negotiation failure. Now, ``enable echo'' is required for this
519 behaviour. The ppp version number has been bumped to 3.4.2 to
523 The wlan support has been updated to split the crypto support
524 into separate modules. For static WEP you must configure the
525 wlan_wep module in your system or build and install the module
526 in place where it can be loaded (the kernel will auto-load
527 the module when a wep key is configured).
530 The ath driver has been updated to split the tx rate control
531 algorithm into a separate module. You need to include either
532 ath_rate_onoe or ath_rate_amrr when configuring the kernel.
535 Support for systems with an 80386 CPU has been removed. Please
536 use FreeBSD 5.x or earlier on systems with an 80386.
539 We have had a hack which would mount the root filesystem
540 R/W if the device were named 'md*'. As part of the vnode
541 work I'm doing I have had to remove this hack. People
542 building systems which use preloaded MD root filesystems
543 may need to insert a "/sbin/mount -u -o rw /dev/md0 /" in
544 their /etc/rc scripts.
547 FreeBSD 5.3 shipped here.
550 The size of struct tcpcb has changed again due to the removal
551 of RFC1644 T/TCP. You have to recompile userland programs that
552 read kmem for tcp sockets directly (netstat, sockstat, etc.)
555 The size of struct tcpcb has changed. You have to recompile
556 userland programs that read kmem for tcp sockets directly
557 (netstat, sockstat, etc.)
560 RELENG_5 branched here. For older entries, please see updating
561 in the RELENG_5 branch.
567 Avoid using make -j when upgrading. From time to time in the
568 past there have been problems using -j with buildworld and/or
569 installworld. This is especially true when upgrading between
570 "distant" versions (eg one that cross a major release boundary
571 or several minor releases, or when several months have passed
572 on the -current branch).
574 Sometimes, obscure build problems are the result of environment
575 poisoning. This can happen because the make utility reads its
576 environment when searching for values for global variables.
577 To run your build attempts in an "environmental clean room",
578 prefix all make commands with 'env -i '. See the env(1) manual
579 page for more details.
581 When upgrading from one major version to another it is generally
582 best to upgrade to the latest code in the currently installed branch
583 first, then do an upgrade to the new branch. This is the best-tested
584 upgrade path, and has the highest probability of being successful.
585 Please try this approach before reporting problems with a major
590 If you are updating from a prior version of FreeBSD (even one just
591 a few days old), you should follow this procedure. It is the most
592 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
594 make kernel-toolchain
595 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE
596 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE
598 To test a kernel once
599 ---------------------
600 If you just want to boot a kernel once (because you are not sure
601 if it works, or if you want to boot a known bad kernel to provide
602 debugging information) run
603 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
604 nextboot -k testkernel
606 To just build a kernel when you know that it won't mess you up
607 --------------------------------------------------------------
608 This assumes you are already running a 5.X system. Replace
609 ${arch} with the architecture of your machine (e.g. "i386",
610 "alpha", "amd64", "ia64", "pc98", "sparc64", etc).
612 cd src/sys/${arch}/conf
613 config KERNEL_NAME_HERE
614 cd ../compile/KERNEL_NAME_HERE
619 If this fails, go to the "To build a kernel" section.
621 To rebuild everything and install it on the current system.
622 -----------------------------------------------------------
623 # Note: sometimes if you are running current you gotta do more than
624 # is listed here if you are upgrading from a really old current.
626 <make sure you have good level 0 dumps>
628 make kernel KERNCONF=YOUR_KERNEL_HERE
630 <reboot in single user> [3]
638 To cross-install current onto a separate partition
639 --------------------------------------------------
640 # In this approach we use a separate partition to hold
641 # current's root, 'usr', and 'var' directories. A partition
642 # holding "/", "/usr" and "/var" should be about 2GB in
645 <make sure you have good level 0 dumps>
648 make buildkernel KERNCONF=YOUR_KERNEL_HERE
649 <maybe newfs current's root partition>
650 <mount current's root partition on directory ${CURRENT_ROOT}>
651 make installworld DESTDIR=${CURRENT_ROOT}
652 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
653 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT}
654 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd
655 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
656 <reboot into current>
657 <do a "native" rebuild/install as described in the previous section>
658 <maybe install compatibility libraries from src/lib/compat>
662 To upgrade in-place from 5.x-stable to current
663 ----------------------------------------------
664 <make sure you have good level 0 dumps>
666 make kernel KERNCONF=YOUR_KERNEL_HERE [8]
668 <reboot in single user> [3]
675 Make sure that you've read the UPDATING file to understand the
676 tweaks to various things you need. At this point in the life
677 cycle of current, things change often and you are on your own
678 to cope. The defaults can also change, so please read ALL of
679 the UPDATING entries.
681 Also, if you are tracking -current, you must be subscribed to
682 freebsd-current@freebsd.org. Make sure that before you update
683 your sources that you have read and understood all the recent
684 messages there. If in doubt, please track -stable which has
687 [1] If you have third party modules, such as vmware, you
688 should disable them at this point so they don't crash your
691 [3] From the bootblocks, boot -s, and then do
696 adjkerntz -i # if CMOS is wall time
697 Also, when doing a major release upgrade, it is required that
698 you boot into single user mode to do the installworld.
700 [4] Note: This step is non-optional. Failure to do this step
701 can result in a significant reduction in the functionality of the
702 system. Attempting to do it by hand is not recommended and those
703 that pursue this avenue should read this file carefully, as well
704 as the archives of freebsd-current and freebsd-hackers mailing lists
705 for potential gotchas.
707 [5] Usually this step is a noop. However, from time to time
708 you may need to do this if you get unknown user in the following
709 step. It never hurts to do it all the time. You may need to
710 install a new mergemaster (cd src/usr.sbin/mergemaster && make
711 install) after the buildworld before this step if you last updated
712 from current before 20020224 or from -stable before 20020408.
714 [8] In order to have a kernel that can run the 4.x binaries
715 needed to do an installworld, you must include the COMPAT_FREEBSD4
716 option in your kernel. Failure to do so may leave you with a system
717 that is hard to boot to recover. A similar kernel option COMPAT_FREEBSD5
718 is required to run the 5.x binaries on more recent kernels.
720 Make sure that you merge any new devices from GENERIC since the
721 last time you updated your kernel config file.
723 [9] When checking out sources, you must include the -P flag to have
724 cvs prune empty directories.
726 If CPUTYPE is defined in your /etc/make.conf, make sure to use the
727 "?=" instead of the "=" assignment operator, so that buildworld can
728 override the CPUTYPE if it needs to.
730 MAKEOBJDIRPREFIX must be defined in an environment variable, and
731 not on the command line, or in /etc/make.conf. buildworld will
732 warn if it is improperly defined.
735 This file contains a list, in reverse chronological order, of major
736 breakages in tracking -current. Not all things will be listed here,
737 and it only starts on October 16, 2004. Updating files can found in
738 previous releases if your system is older than this.
740 Copyright information:
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752 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
753 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
754 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
755 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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757 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
758 POSSIBILITY OF SUCH DAMAGE.
760 If you find this document useful, and you want to, you may buy the
763 Contact Warner Losh if you have any questions about your use of