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 Firmwares for ipw(4) and iwi(4) are now included in the base tree.
26 In order to use them one must agree to the respective LICENSE in
27 share/doc/legal and define legal.<name>.license_ack=1 via
28 loader.conf(5) or kenv(1).
31 The name resolution/mapping functions addr2ascii(3) and ascii2addr(3)
32 were removed from FreeBSD's libc. These originally came from INRIA
33 IPv6. Nothing in FreeBSD ever used them. They may be regarded as
34 deprecated in previous releases.
35 The AF_LINK support for getnameinfo(3) was merged from NetBSD to
36 replace it as a more portable (and re-entrant) API.
39 To support interrupt filtering a modification to the newbus API
40 has occurred, ABI was broken and __FreeBSD_version was bumped
41 to 700031. Please make sure that your kernel and modules are in
43 http://docs.freebsd.org/cgi/mid.cgi?20070221233124.GA13941
46 The IPv6 multicast forwarding code may now be loaded into GENERIC
47 kernels by loading the ip_mroute.ko module. This is built into the
48 module unless WITHOUT_INET6 or WITHOUT_INET6_SUPPORT options are
49 set; see src.conf(5) for more information.
52 The output of netstat -r has changed. Without -n, we now only
53 print a "network name" without the prefix length if the network
54 address and mask exactly match a Class A/B/C network, and an entry
55 exists in the nsswitch "networks" map.
56 With -n, we print the full unabbreviated CIDR network prefix in
57 the form "a.b.c.d/p". 0.0.0.0/0 is always printed as "default".
58 This change is in preparation for changes such as equal-cost
59 multipath, and to more generally assist operational deployment
60 of FreeBSD as a modern IPv4 router.
63 PIM has been turned on by default in the IPv4 multicast
64 routing code. The kernel option 'PIM' has now been removed.
65 PIM is now built by default if option 'MROUTING' is specified.
66 It may now be loaded into GENERIC kernels by loading the
70 Support for IPIP tunnels (VIFF_TUNNEL) in IPv4 multicast routing
71 has been removed. Its functionality may be achieved by explicitly
72 configuring gif(4) interfaces and using the 'phyint' keyword in
74 XORP does not support source-routed IPv4 multicast tunnels nor the
75 integrated IPIP tunneling, therefore it is not affected by this
76 change. The __FreeBSD_version macro has been bumped to 700030.
79 Support for PCI Message Signalled Interrupts has been
80 re-enabled in the bge driver, only for those chips which are
81 believed to support it properly. If there are any problems,
82 MSI can be disabled completely by setting the
83 'hw.pci.enable_msi' and 'hw.pci.enable_msix' tunables to 0
87 Support for PCI Message Signalled Interrupts has been
88 disabled again in the bge driver. Many revisions of the
89 hardware fail to support it properly. Support can be
90 re-enabled by removing the #define of BGE_DISABLE_MSI in
91 "src/sys/dev/bge/if_bge.c".
94 Support for PCI Message Signalled Interrupts has been added
95 to the bge driver. If there are any problems, MSI can be
96 disabled completely by setting the 'hw.pci.enable_msi' and
97 'hw.pci.enable_msix' tunables to 0 in the loader.
100 The removal of several facets of the experimental Threading
101 system from the kernel means that the proc and thread structures
102 have changed quite a bit. I suggest all kernel modules that might
103 reference these structures be recompiled.. Especially the
107 Sound infrastructure has been updated with various fixes and
108 improvements. Most of the changes are pretty much transparent,
109 with exceptions of followings:
110 1) All sound driver specific sysctls (hw.snd.pcm%d.*) have been
111 moved to their own dev sysctl nodes, for example:
112 hw.snd.pcm0.vchans -> dev.pcm.0.vchans
113 2) /dev/dspr%d.%d has been deprecated. Each channel now has its
114 own chardev in the form of "dsp%d.<function>%d", where <function>
115 is p = playback, r = record and v = virtual, respectively. Users
116 are encouraged to use these devs instead of (old) "/dev/dsp%d.%d".
117 This does not affect those who are using "/dev/dsp".
120 The following binaries have been disconnected from the build:
121 mount_devfs, mount_ext2fs, mount_fdescfs, mount_procfs, mount_linprocfs,
122 and mount_std. The functionality of these programs has been
123 moved into the mount program. For example, to mount a devfs
124 filesystem, instead of using mount_devfs, use: "mount -t devfs".
125 This does not affect entries in /etc/fstab, since entries in
126 /etc/fstab are always processed with "mount -t fstype".
129 Support for PCI Message Signalled Interrupts on i386 and amd64
130 has been added to the kernel and various drivers will soon be
131 updated to use MSI when it is available. If there are any problems,
132 MSI can be disabled completely by setting the 'hw.pci.enable_msi'
133 and 'hw.pci.enable_msix' tunables to 0 in the loader.
136 The MUTEX_PROFILING option has been renamed to LOCK_PROFILING.
137 The lockmgr object layout has been changed as a result of having
138 a lock_object embedded in it. As a consequence all file system
139 kernel modules must be re-compiled. The mutex profiling man page
140 has not yet been updated to reflect this change.
143 KSE in the kernel has now been made optional and turned on by
144 default. Use 'nooption KSE' in your kernel config to turn it
145 off. All kernel modules *must* be recompiled after this change.
146 There-after, modules from a KSE kernel should be compatible with
147 modules from a NOKSE kernel due to the temporary padding fields
148 added to 'struct proc'.
151 mrouted and its utilities have been removed from the base system.
154 Some ioctl(2) command codes have changed. Full backward ABI
155 compatibility is provided if the "options COMPAT_FREEBSD6" is
156 present in the kernel configuration file. Make sure to add
157 this option to your kernel config file, or recompile X.Org
158 and the rest of ports; otherwise they may refuse to work.
161 tcpslice has been removed from the base system.
164 The sizes of struct tcpcb (and struct xtcpcb) have changed due to
165 the rewrite of TCP syncookies. Tools like netstat, sockstat, and
166 systat needs to be rebuilt.
169 libpcap updated to v0.9.4 and tcpdump to v3.9.4
172 The IPFIREWALL_FORWARD_EXTENDED option is gone and the behaviour
173 for IPFIREWALL_FORWARD is now as it was before when it was first
174 committed and for years after. The behaviour is now ON.
177 enigma(1)/crypt(1) utility has been changed on 64 bit architectures.
178 Now it can decrypt files created from different architectures.
179 Unfortunately, it is no longer able to decrypt a cipher text
180 generated with an older version on 64 bit architectures.
181 If you have such a file, you need old utility to decrypt it.
184 The interface version of the i4b kernel part has changed. So
185 after updating the kernel sources and compiling a new kernel,
186 the i4b user space tools in "/usr/src/usr.sbin/i4b" must also
187 be rebuilt, and vice versa.
190 The XBOX kernel now defaults to the nfe(4) driver instead of
191 the nve(4) driver. Please update your configuration
195 The i386-only lnc(4) driver for the AMD Am7900 LANCE and Am79C9xx
196 PCnet family of NICs has been removed. The new le(4) driver serves
197 as an equivalent but cross-platform replacement with the pcn(4)
198 driver still providing performance-optimized support for the subset
199 of AMD Am79C971 PCnet-FAST and greater chips as before.
202 The machdep.* sysctls and the adjkerntz utility have been
203 modified a bit. The new adjkerntz utility uses the new
204 sysctl names and sysctlbyname() calls, so it may be impossible
205 to run an old /sbin/adjkerntz utility in single-user mode
206 with a new kernel. Replace the `adjkerntz -i' step before
207 `make installworld' with:
209 /usr/obj/usr/src/sbin/adjkerntz/adjkerntz -i
211 and proceed as usual with the rest of the installworld-stage
212 steps. Otherwise, you risk installing binaries with their
213 timestamp set several hours in the future, especially if
214 you are running with local time set to GMT+X hours.
217 The ip6fw utility has been removed. The behavior provided by
218 ip6fw has been in ipfw2 for a good while and the rc.d scripts
219 have been updated to deal with it. There are some rules that
220 might not migrate cleanly. Use rc.firewall6 as a template to
224 The puc(4) driver has been overhauled. The ebus(4) and sbus(4)
225 attachments have been removed. Make sure to configure scc(4)
226 on sparc64. Note also that by default puc(4) will use uart(4)
227 and not sio(4) for serial ports because interrupt handling has
228 been optimized for multi-port serial cards and only uart(4)
229 implements the interface to support it.
232 The scc(4) driver replaces puc(4) for Serial Communications
233 Controllers (SCCs) like the Siemens SAB82532 and the Zilog
234 Z8530. On sparc64, it is advised to add scc(4) to the kernel
235 configuration to make sure that the serial ports remain
239 Most world/kernel related NO_* build options changed names.
240 New knobs have common prefixes WITHOUT_*/WITH_* (modelled
241 after FreeBSD ports) and should be set in /etc/src.conf
242 (the src.conf(5) manpage is provided). Full backwards
243 compatibility is maintained for the time being though it's
244 highly recommended to start moving old options out of the
245 system-wide /etc/make.conf file into the new /etc/src.conf
246 while also properly renaming them. More conversions will
247 likely follow. Posting to current@:
249 http://lists.freebsd.org/pipermail/freebsd-current/2006-March/061725.html
252 The NETSMBCRYPTO kernel option has been retired because its
253 functionality is always included in NETSMB and smbfs.ko now.
256 The TDFX_LINUX kernel option was retired and replaced by the
257 tdfx_linux device. The latter can be loaded as the 3dfx_linux.ko
258 kernel module. Loading it alone should suffice to get 3dfx support
259 for Linux apps because it will pull in 3dfx.ko and linux.ko through
263 The 'audit' group was added to support the new auditing functionality
264 in the base system. Be sure to follow the directions for updating,
265 including the requirement to run mergemaster -p.
268 The kernel ABI to file system modules was changed on i386.
269 Please make sure that your kernel and modules are in sync.
272 This actually occured some time ago, but installing the kernel
273 now also installs a bunch of symbol files for the kernel modules.
274 This increases the size of /boot/kernel to about 67Mbytes. You
275 will need twice this if you will eventually back this up to kernel.old
276 on your next install.
277 If you have a shortage of room in your root partition, you should add
278 -DINSTALL_NODEBUG to your make arguments or add INSTALL_NODEBUG="yes"
279 to your /etc/make.conf.
282 libc's malloc implementation has been replaced. This change has the
283 potential to uncover application bugs that previously went unnoticed.
284 See the malloc(3) manual page for more details.
287 The generic netgraph(4) cookie has been changed. If you upgrade
288 kernel passing this point, you also need to upgrade userland
289 and netgraph(4) utilities like ports/net/mpd or ports/net/mpd4.
292 si(4)'s device files now contain the unit number.
293 Uses of {cua,tty}A[0-9a-f] should be replaced by {cua,tty}A0[0-9a-f].
296 The kernel ABI was mostly destroyed due to a change in the size
297 of struct lock_object which is nested in other structures such
298 as mutexes which are nested in all sorts of other structures.
299 Make sure your kernel and modules are in sync.
302 The page coloring algorithm in the VM subsystem was converted
303 from tuning with kernel options to autotuning. Please remove
304 any PQ_* option except PQ_NOOPT from your kernel config.
307 The net80211-related tools in the tools/tools/ath directory
308 have been moved to tools/tools/net80211 and renamed with a
309 "wlan" prefix. Scripts that use them should be adjusted
313 Scripts in the local_startup directories (as defined in
314 /etc/defaults/rc.conf) that have the new rc.d semantics will
315 now be run as part of the base system rcorder. If there are
316 errors or problems with one of these local scripts, it could
317 cause boot problems. If you encounter such problems, boot in
318 single user mode, remove that script from the */rc.d directory.
319 Please report the problem to the port's maintainer, and the
320 freebsd-ports@freebsd.org mailing list.
323 The nodev mount option was deprecated in RELENG_6 (where it
324 was a no-op), and is now unsupported. If you have nodev or dev listed
325 in /etc/fstab, remove it, otherwise it will result in a mount error.
328 ABI between ipfw(4) and ipfw(8) has been changed. You need
329 to rebuild ipfw(8) when rebuilding kernel.
332 rp(4)'s device files now contain the unit number.
333 Uses of {cua,tty}R[0-9a-f] should be replaced by {cua,tty}R0[0-9a-f].
336 /etc/rc.d/ppp-user has been renamed to /etc/rc.d/ppp.
337 Its /etc/rc.conf.d configuration file has been `ppp' from
338 the beginning, and hence there is no need to touch it.
341 Now most modules get their build-time options from the kernel
342 configuration file. A few modules still have fixed options
343 due to their non-conformant implementation, but they will be
344 corrected eventually. You may need to review the options of
345 the modules in use, explicitly specify the non-default options
346 in the kernel configuration file, and rebuild the kernel and
350 kern.polling.enable sysctl MIB is now deprecated. Use ifconfig(8)
351 to turn polling(4) on your interfaces.
354 The old bridge(4) implementation was retired. The new
355 if_bridge(4) serves as a full functional replacement.
358 The ai_addrlen of a struct addrinfo was changed to a socklen_t
359 to conform to POSIX-2001. This change broke an ABI
360 compatibility on 64 bit architecture. You have to recompile
361 userland programs that use getaddrinfo(3) on 64 bit
365 RELENG_6 branched here.
368 The pccard_ifconfig rc.conf variable has been removed and a new
369 variable, ifconfig_DEFAULT has been introduced. Unlike
370 pccard_ifconfig, ifconfig_DEFAULT applies to ALL interfaces that
371 do not have ifconfig_ifn entries rather than just those in
372 removable_interfaces.
375 Some previous versions of PAM have permitted the use of
376 non-absolute paths in /etc/pam.conf or /etc/pam.d/* when referring
377 to third party PAM modules in /usr/local/lib. A change has been
378 made to require the use of absolute paths in order to avoid
379 ambiguity and dependence on library path configuration, which may
380 affect existing configurations.
383 Major changes to network interface API. All drivers must be
384 recompiled. Drivers not in the base system will need to be
385 updated to the new APIs.
388 Changes were made to kinfo_proc in sys/user.h. Please recompile
389 userland, or commands like `fstat', `pkill', `ps', `top' and `w'
390 will not behave correctly.
392 The API and ABI for hwpmc(4) have changed with the addition
393 of sampling support. Please recompile lib/libpmc(3) and
394 usr.sbin/{pmcstat,pmccontrol}.
397 The OpenBSD dhclient was imported in place of the ISC dhclient
398 and the network interface configuration scripts were updated
399 accordingly. If you use DHCP to configure your interfaces, you
400 must now run devd. Also, DNS updating was lost so you will need
401 to find a workaround if you use this feature.
403 The '_dhcp' user was added to support the OpenBSD dhclient. Be
404 sure to run mergemaster -p (like you are supposed to do every time
408 if_bridge was added to the tree. This has changed struct ifnet.
409 Please recompile userland and all network related modules.
412 The n_net of a struct netent was changed to an uint32_t, and
413 1st argument of getnetbyaddr() was changed to an uint32_t, to
414 conform to POSIX-2001. These changes broke an ABI
415 compatibility on 64 bit architecture. With these changes,
416 shlib major of libpcap was bumped. You have to recompile
417 userland programs that use getnetbyaddr(3), getnetbyname(3),
418 getnetent(3) and/or libpcap on 64 bit architecture.
421 Kernel parsing of extra options on '#!' first lines of shell
422 scripts has changed. Lines with multiple options likely will
423 fail after this date. For full details, please see
424 http://people.freebsd.org/~gad/Updating-20050528.txt
427 The packet filter (pf) code has been updated to OpenBSD 3.7
428 Please note the changed anchor syntax and the fact that
429 authpf(8) now needs a mounted fdescfs(5) to function.
432 The NO_MIXED_MODE kernel option has been removed from the i386
433 amd64 platforms as its use has been superceded by the new local
434 APIC timer code. Any kernel config files containing this option
438 The on-disk format of LC_CTYPE files was changed to be machine
439 independent. Please make sure NOT to use NO_CLEAN buildworld
440 when crossing this point. Crossing this point also requires
441 recompile or reinstall of all locale depended packages.
444 The ifi_epoch member of struct if_data has been changed to
445 contain the uptime at which the interface was created or the
446 statistics zeroed rather then the wall clock time because
447 wallclock time may go backwards. This should have no impact
448 unless an snmp implementation is using this value (I know of
452 The acpi_perf and acpi_throttle drivers are now part of the
453 acpi(4) main module. They are no longer built separately.
456 The layout of struct image_params has changed. You have to
457 recompile all compatibility modules (linux, svr4, etc) for use
461 The p4tcc driver has been merged into cpufreq(4). This makes
462 "options CPU_ENABLE_TCC" obsolete. Please load cpufreq.ko or
463 compile in "device cpufreq" to restore this functionality.
466 The responsibility of recomputing the file system summary of
467 a SoftUpdates-enabled dirty volume has been transferred to the
468 background fsck. A rebuild of fsck(8) utility is recommended
469 if you have updated the kernel.
471 To get the old behavior (recompute file system summary at mount
472 time), you can set vfs.ffs.compute_summary_at_mount=1 before
473 mounting the new volume.
476 The cpufreq import is complete. As part of this, the sysctls for
477 acpi(4) throttling have been removed. The power_profile script
478 has been updated, so you can use performance/economy_cpu_freq in
479 rc.conf(5) to set AC on/offline cpu frequencies.
482 NG_VERSION has been increased. Recompiling kernel (or ng_socket.ko)
483 requires recompiling libnetgraph and userland netgraph utilities.
486 Support for abbreviated forms of a number of ipfw options is
487 now deprecated. Warnings are printed to stderr indicating the
488 correct full form when a match occurs. Some abbreviations may
489 be supported at a later date based on user feedback. To be
490 considered for support, abbreviations must be in use prior to
491 this commit and unlikely to be confused with current key words.
494 By a popular demand, a lot of NOFOO options were renamed
495 to NO_FOO (see bsd.compat.mk for a full list). The old
496 spellings are still supported, but will cause annoying
497 warnings on stderr. Make sure you upgrade properly (see
498 the COMMON ITEMS: section later in this file).
501 Auto-loading of ancillary wlan modules such as wlan_wep has
502 been temporarily disabled; you need to statically configure
503 the modules you need into your kernel or explicitly load them
504 prior to use. Specifically, if you intend to use WEP encryption
505 with an 802.11 device load/configure wlan_wep; if you want to
506 use WPA with the ath driver load/configure wlan_tkip, wlan_ccmp,
507 and wlan_xauth as required.
510 The behaviour of ppp(8) has changed slightly. If lqr is enabled
511 (``enable lqr''), older versions would revert to LCP ECHO mode on
512 negotiation failure. Now, ``enable echo'' is required for this
513 behaviour. The ppp version number has been bumped to 3.4.2 to
517 The wlan support has been updated to split the crypto support
518 into separate modules. For static WEP you must configure the
519 wlan_wep module in your system or build and install the module
520 in place where it can be loaded (the kernel will auto-load
521 the module when a wep key is configured).
524 The ath driver has been updated to split the tx rate control
525 algorithm into a separate module. You need to include either
526 ath_rate_onoe or ath_rate_amrr when configuring the kernel.
529 Support for systems with an 80386 CPU has been removed. Please
530 use FreeBSD 5.x or earlier on systems with an 80386.
533 We have had a hack which would mount the root filesystem
534 R/W if the device were named 'md*'. As part of the vnode
535 work I'm doing I have had to remove this hack. People
536 building systems which use preloaded MD root filesystems
537 may need to insert a "/sbin/mount -u -o rw /dev/md0 /" in
538 their /etc/rc scripts.
541 FreeBSD 5.3 shipped here.
544 The size of struct tcpcb has changed again due to the removal
545 of RFC1644 T/TCP. You have to recompile userland programs that
546 read kmem for tcp sockets directly (netstat, sockstat, etc.)
549 The size of struct tcpcb has changed. You have to recompile
550 userland programs that read kmem for tcp sockets directly
551 (netstat, sockstat, etc.)
554 RELENG_5 branched here. For older entries, please see updating
555 in the RELENG_5 branch.
561 Avoid using make -j when upgrading. From time to time in the
562 past there have been problems using -j with buildworld and/or
563 installworld. This is especially true when upgrading between
564 "distant" versions (eg one that cross a major release boundary
565 or several minor releases, or when several months have passed
566 on the -current branch).
568 Sometimes, obscure build problems are the result of environment
569 poisoning. This can happen because the make utility reads its
570 environment when searching for values for global variables.
571 To run your build attempts in an "environmental clean room",
572 prefix all make commands with 'env -i '. See the env(1) manual
573 page for more details.
575 When upgrading from one major version to another it is generally
576 best to upgrade to the latest code in the currently installed branch
577 first, then do an upgrade to the new branch. This is the best-tested
578 upgrade path, and has the highest probability of being successful.
579 Please try this approach before reporting problems with a major
584 If you are updating from a prior version of FreeBSD (even one just
585 a few days old), you should follow this procedure. It is the most
586 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
588 make kernel-toolchain
589 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE
590 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE
592 To test a kernel once
593 ---------------------
594 If you just want to boot a kernel once (because you are not sure
595 if it works, or if you want to boot a known bad kernel to provide
596 debugging information) run
597 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
598 nextboot -k testkernel
600 To just build a kernel when you know that it won't mess you up
601 --------------------------------------------------------------
602 This assumes you are already running a 5.X system. Replace
603 ${arch} with the architecture of your machine (e.g. "i386",
604 "alpha", "amd64", "ia64", "pc98", "sparc64", etc).
606 cd src/sys/${arch}/conf
607 config KERNEL_NAME_HERE
608 cd ../compile/KERNEL_NAME_HERE
613 If this fails, go to the "To build a kernel" section.
615 To rebuild everything and install it on the current system.
616 -----------------------------------------------------------
617 # Note: sometimes if you are running current you gotta do more than
618 # is listed here if you are upgrading from a really old current.
620 <make sure you have good level 0 dumps>
622 make kernel KERNCONF=YOUR_KERNEL_HERE
624 <reboot in single user> [3]
632 To cross-install current onto a separate partition
633 --------------------------------------------------
634 # In this approach we use a separate partition to hold
635 # current's root, 'usr', and 'var' directories. A partition
636 # holding "/", "/usr" and "/var" should be about 2GB in
639 <make sure you have good level 0 dumps>
642 make buildkernel KERNCONF=YOUR_KERNEL_HERE
643 <maybe newfs current's root partition>
644 <mount current's root partition on directory ${CURRENT_ROOT}>
645 make installworld DESTDIR=${CURRENT_ROOT}
646 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
647 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT}
648 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd
649 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
650 <reboot into current>
651 <do a "native" rebuild/install as described in the previous section>
652 <maybe install compatibility libraries from src/lib/compat>
656 To upgrade in-place from 5.x-stable to current
657 ----------------------------------------------
658 <make sure you have good level 0 dumps>
660 make kernel KERNCONF=YOUR_KERNEL_HERE [8]
662 <reboot in single user> [3]
669 Make sure that you've read the UPDATING file to understand the
670 tweaks to various things you need. At this point in the life
671 cycle of current, things change often and you are on your own
672 to cope. The defaults can also change, so please read ALL of
673 the UPDATING entries.
675 Also, if you are tracking -current, you must be subscribed to
676 freebsd-current@freebsd.org. Make sure that before you update
677 your sources that you have read and understood all the recent
678 messages there. If in doubt, please track -stable which has
681 [1] If you have third party modules, such as vmware, you
682 should disable them at this point so they don't crash your
685 [3] From the bootblocks, boot -s, and then do
690 adjkerntz -i # if CMOS is wall time
691 Also, when doing a major release upgrade, it is required that
692 you boot into single user mode to do the installworld.
694 [4] Note: This step is non-optional. Failure to do this step
695 can result in a significant reduction in the functionality of the
696 system. Attempting to do it by hand is not recommended and those
697 that pursue this avenue should read this file carefully, as well
698 as the archives of freebsd-current and freebsd-hackers mailing lists
699 for potential gotchas.
701 [5] Usually this step is a noop. However, from time to time
702 you may need to do this if you get unknown user in the following
703 step. It never hurts to do it all the time. You may need to
704 install a new mergemaster (cd src/usr.sbin/mergemaster && make
705 install) after the buildworld before this step if you last updated
706 from current before 20020224 or from -stable before 20020408.
708 [8] In order to have a kernel that can run the 4.x binaries
709 needed to do an installworld, you must include the COMPAT_FREEBSD4
710 option in your kernel. Failure to do so may leave you with a system
711 that is hard to boot to recover. A similar kernel option COMPAT_FREEBSD5
712 is required to run the 5.x binaries on more recent kernels.
714 Make sure that you merge any new devices from GENERIC since the
715 last time you updated your kernel config file.
717 [9] When checking out sources, you must include the -P flag to have
718 cvs prune empty directories.
720 If CPUTYPE is defined in your /etc/make.conf, make sure to use the
721 "?=" instead of the "=" assignment operator, so that buildworld can
722 override the CPUTYPE if it needs to.
724 MAKEOBJDIRPREFIX must be defined in an environment variable, and
725 not on the command line, or in /etc/make.conf. buildworld will
726 warn if it is improperly defined.
729 This file contains a list, in reverse chronological order, of major
730 breakages in tracking -current. Not all things will be listed here,
731 and it only starts on October 16, 2004. Updating files can found in
732 previous releases if your system is older than this.
734 Copyright information:
736 Copyright 1998-2005 M. Warner Losh. All Rights Reserved.
738 Redistribution, publication, translation and use, with or without
739 modification, in full or in part, in any form or format of this
740 document are permitted without further permission from the author.
742 THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR
743 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
744 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
745 DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT,
746 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
747 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
748 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
749 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
750 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
751 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
752 POSSIBILITY OF SUCH DAMAGE.
754 If you find this document useful, and you want to, you may buy the
757 Contact Warner Losh if you have any questions about your use of