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 The new IPsec code is now compiled in using the IPSEC option. The
26 IPSEC option now requires "device crypto" be defined in your kernel
27 configuration. The FAST_IPSEC kernel option is now deprecated.
30 The packet filter (pf) code has been updated to OpenBSD 4.1 Please
31 note the changed syntax - keep state is now on by default. Also
32 note the fact that ftp-proxy(8) has been changed from bottom up and
33 has been moved from libexec to usr/sbin. Changes in the ALTQ
34 handling also affect users of IPFW's ALTQ capabilities.
37 Remove KAME IPsec in favor of FAST_IPSEC, which is now the
38 only IPsec supported by FreeBSD. The new IPsec stack
39 supports both IPv4 and IPv6. The kernel option will change
40 after the code changes have settled in. For now the kernel
41 option IPSEC is deprecated and FAST_IPSEC is the only option, that
42 will change after some settling time.
45 The wicontrol(8) utility has been removed from the base system. wi(4)
46 cards should be configured using ifconfig(8), see the man page for more
50 The i386/amd64 GENERIC kernel now defaults to the nfe(4) driver
51 instead of the nve(4) driver. Please update your configuration
55 By default, /etc/rc.d/sendmail no longer rebuilds the aliases
56 database if it is missing or older than the aliases file. If
57 desired, set the new rc.conf option sendmail_rebuild_aliases
58 to "YES" to restore that functionality.
61 The IPv4 multicast socket code has been considerably modified, and
62 moved to the file sys/netinet/in_mcast.c. Initial support for the
63 RFC 3678 Source-Specific Multicast Socket API has been added to
64 the IPv4 network stack.
66 Strict multicast and broadcast reception is now the default for
67 UDP/IPv4 sockets; the net.inet.udp.strict_mcast_mship sysctl variable
70 The RFC 1724 hack for interface selection has been removed; the use
71 of the Linux-derived ip_mreqn structure with IP_MULTICAST_IF has
72 been added to replace it. Consumers such as routed will soon be
73 updated to reflect this.
75 These changes affect users who are running routed(8) or rdisc(8)
76 from the FreeBSD base system on point-to-point or unnumbered
80 The net80211 layer has changed significantly and all wireless
81 drivers that depend on it need to be recompiled. Further these
82 changes require that any program that interacts with the wireless
83 support in the kernel be recompiled; this includes: ifconfig,
84 wpa_supplicant, hostapd, and wlanstats. Users must also, for
85 the moment, kldload the wlan_scan_sta and/or wlan_scan_ap modules
86 if they use modules for wireless support. These modules implement
87 scanning support for station and ap modes, respectively. Failure
88 to load the appropriate module before marking a wireless interface
89 up will result in a message to the console and the device not
93 The pam_nologin(8) module ceases to provide an authentication
94 function and starts providing an account management function.
95 Consequent changes to /etc/pam.d should be brought in using
96 mergemaster(8). Third-party files in /usr/local/etc/pam.d may
97 need manual editing as follows. Locate this line (or similar):
99 auth required pam_nologin.so no_warn
101 and change it according to this example:
103 account required pam_nologin.so no_warn
105 That is, the first word needs to be changed from "auth" to
106 "account". The new line can be moved to the account section
107 within the file for clarity. Not updating pam.conf(5) files
108 will result in nologin(5) ignored by the respective services.
111 The ether_ioctl() function has been synchronized with ioctl(2)
112 and ifnet.if_ioctl. Due to that, the size of one of its arguments
113 has changed on 64-bit architectures. All kernel modules using
114 ether_ioctl() need to be rebuilt on such architectures.
117 Improved INCLUDE_CONFIG_FILE support has been introduced to the
118 config(8) utility. In order to take advantage of this new
119 functionality, you are expected to recompile and install
120 src/usr.sbin/config. If you don't rebuild config(8), and your
121 kernel configuration depends on INCLUDE_CONFIG_FILE, the kernel
122 build will be broken because of a missing "kernconfstring"
126 Symbol versioning is enabled by default. To disable it, use
127 option WITHOUT_SYMVER. It is not advisable to attempt to
128 disable symbol versioning once it is enabled; your installworld
129 will break because a symbol version-less libc will get installed
130 before the install tools. As a result, the old install tools,
131 which previously had symbol dependencies to FBSD_1.0, will fail
132 because the freshly installed libc will not have them.
134 The default threading library has been changed to libthr. If
135 you wish to have libpthread as your default, use option
136 DEFAULT_THREAD_LIB=libpthread for the buildworld.
139 The ABI breakage in sendmail(8)'s libmilter has been repaired
140 so it is no longer necessary to recompile mail filters (aka,
141 milters). If you recompiled mail filters after the 20070408
142 note, it is not necessary to recompile them again.
145 The new trunk(4) driver has been renamed to lagg(4) as it better
146 reflects its purpose. ifconfig will need to be recompiled.
149 sendmail(8) has been updated to version 8.14.1. Mail filters
150 (aka, milters) compiled against the libmilter included in the
151 base operating system should be recompiled.
154 Firmwares for ipw(4) and iwi(4) are now included in the base tree.
155 In order to use them one must agree to the respective LICENSE in
156 share/doc/legal and define legal.intel_<name>.license_ack=1 via
157 loader.conf(5) or kenv(1). Make sure to deinstall the now
158 deprecated modules from the respective firmware ports.
161 The name resolution/mapping functions addr2ascii(3) and ascii2addr(3)
162 were removed from FreeBSD's libc. These originally came from INRIA
163 IPv6. Nothing in FreeBSD ever used them. They may be regarded as
164 deprecated in previous releases.
165 The AF_LINK support for getnameinfo(3) was merged from NetBSD to
166 replace it as a more portable (and re-entrant) API.
169 To support interrupt filtering a modification to the newbus API
170 has occurred, ABI was broken and __FreeBSD_version was bumped
171 to 700031. Please make sure that your kernel and modules are in
173 http://docs.freebsd.org/cgi/mid.cgi?20070221233124.GA13941
176 The IPv6 multicast forwarding code may now be loaded into GENERIC
177 kernels by loading the ip_mroute.ko module. This is built into the
178 module unless WITHOUT_INET6 or WITHOUT_INET6_SUPPORT options are
179 set; see src.conf(5) for more information.
182 The output of netstat -r has changed. Without -n, we now only
183 print a "network name" without the prefix length if the network
184 address and mask exactly match a Class A/B/C network, and an entry
185 exists in the nsswitch "networks" map.
186 With -n, we print the full unabbreviated CIDR network prefix in
187 the form "a.b.c.d/p". 0.0.0.0/0 is always printed as "default".
188 This change is in preparation for changes such as equal-cost
189 multipath, and to more generally assist operational deployment
190 of FreeBSD as a modern IPv4 router.
193 PIM has been turned on by default in the IPv4 multicast
194 routing code. The kernel option 'PIM' has now been removed.
195 PIM is now built by default if option 'MROUTING' is specified.
196 It may now be loaded into GENERIC kernels by loading the
200 Support for IPIP tunnels (VIFF_TUNNEL) in IPv4 multicast routing
201 has been removed. Its functionality may be achieved by explicitly
202 configuring gif(4) interfaces and using the 'phyint' keyword in
204 XORP does not support source-routed IPv4 multicast tunnels nor the
205 integrated IPIP tunneling, therefore it is not affected by this
206 change. The __FreeBSD_version macro has been bumped to 700030.
209 Support for PCI Message Signalled Interrupts has been
210 re-enabled in the bge driver, only for those chips which are
211 believed to support it properly. If there are any problems,
212 MSI can be disabled completely by setting the
213 'hw.pci.enable_msi' and 'hw.pci.enable_msix' tunables to 0
217 Support for PCI Message Signalled Interrupts has been
218 disabled again in the bge driver. Many revisions of the
219 hardware fail to support it properly. Support can be
220 re-enabled by removing the #define of BGE_DISABLE_MSI in
221 "src/sys/dev/bge/if_bge.c".
224 Support for PCI Message Signalled Interrupts has been added
225 to the bge driver. If there are any problems, MSI can be
226 disabled completely by setting the 'hw.pci.enable_msi' and
227 'hw.pci.enable_msix' tunables to 0 in the loader.
230 The removal of several facets of the experimental Threading
231 system from the kernel means that the proc and thread structures
232 have changed quite a bit. I suggest all kernel modules that might
233 reference these structures be recompiled.. Especially the
237 Sound infrastructure has been updated with various fixes and
238 improvements. Most of the changes are pretty much transparent,
239 with exceptions of followings:
240 1) All sound driver specific sysctls (hw.snd.pcm%d.*) have been
241 moved to their own dev sysctl nodes, for example:
242 hw.snd.pcm0.vchans -> dev.pcm.0.vchans
243 2) /dev/dspr%d.%d has been deprecated. Each channel now has its
244 own chardev in the form of "dsp%d.<function>%d", where <function>
245 is p = playback, r = record and v = virtual, respectively. Users
246 are encouraged to use these devs instead of (old) "/dev/dsp%d.%d".
247 This does not affect those who are using "/dev/dsp".
250 The following binaries have been disconnected from the build:
251 mount_devfs, mount_ext2fs, mount_fdescfs, mount_procfs, mount_linprocfs,
252 and mount_std. The functionality of these programs has been
253 moved into the mount program. For example, to mount a devfs
254 filesystem, instead of using mount_devfs, use: "mount -t devfs".
255 This does not affect entries in /etc/fstab, since entries in
256 /etc/fstab are always processed with "mount -t fstype".
259 Support for PCI Message Signalled Interrupts on i386 and amd64
260 has been added to the kernel and various drivers will soon be
261 updated to use MSI when it is available. If there are any problems,
262 MSI can be disabled completely by setting the 'hw.pci.enable_msi'
263 and 'hw.pci.enable_msix' tunables to 0 in the loader.
266 The MUTEX_PROFILING option has been renamed to LOCK_PROFILING.
267 The lockmgr object layout has been changed as a result of having
268 a lock_object embedded in it. As a consequence all file system
269 kernel modules must be re-compiled. The mutex profiling man page
270 has not yet been updated to reflect this change.
273 KSE in the kernel has now been made optional and turned on by
274 default. Use 'nooption KSE' in your kernel config to turn it
275 off. All kernel modules *must* be recompiled after this change.
276 There-after, modules from a KSE kernel should be compatible with
277 modules from a NOKSE kernel due to the temporary padding fields
278 added to 'struct proc'.
281 mrouted and its utilities have been removed from the base system.
284 Some ioctl(2) command codes have changed. Full backward ABI
285 compatibility is provided if the "options COMPAT_FREEBSD6" is
286 present in the kernel configuration file. Make sure to add
287 this option to your kernel config file, or recompile X.Org
288 and the rest of ports; otherwise they may refuse to work.
291 tcpslice has been removed from the base system.
294 The sizes of struct tcpcb (and struct xtcpcb) have changed due to
295 the rewrite of TCP syncookies. Tools like netstat, sockstat, and
296 systat needs to be rebuilt.
299 libpcap updated to v0.9.4 and tcpdump to v3.9.4
302 The IPFIREWALL_FORWARD_EXTENDED option is gone and the behaviour
303 for IPFIREWALL_FORWARD is now as it was before when it was first
304 committed and for years after. The behaviour is now ON.
307 enigma(1)/crypt(1) utility has been changed on 64 bit architectures.
308 Now it can decrypt files created from different architectures.
309 Unfortunately, it is no longer able to decrypt a cipher text
310 generated with an older version on 64 bit architectures.
311 If you have such a file, you need old utility to decrypt it.
314 The interface version of the i4b kernel part has changed. So
315 after updating the kernel sources and compiling a new kernel,
316 the i4b user space tools in "/usr/src/usr.sbin/i4b" must also
317 be rebuilt, and vice versa.
320 The XBOX kernel now defaults to the nfe(4) driver instead of
321 the nve(4) driver. Please update your configuration
325 The i386-only lnc(4) driver for the AMD Am7900 LANCE and Am79C9xx
326 PCnet family of NICs has been removed. The new le(4) driver serves
327 as an equivalent but cross-platform replacement with the pcn(4)
328 driver still providing performance-optimized support for the subset
329 of AMD Am79C971 PCnet-FAST and greater chips as before.
332 The machdep.* sysctls and the adjkerntz utility have been
333 modified a bit. The new adjkerntz utility uses the new
334 sysctl names and sysctlbyname() calls, so it may be impossible
335 to run an old /sbin/adjkerntz utility in single-user mode
336 with a new kernel. Replace the `adjkerntz -i' step before
337 `make installworld' with:
339 /usr/obj/usr/src/sbin/adjkerntz/adjkerntz -i
341 and proceed as usual with the rest of the installworld-stage
342 steps. Otherwise, you risk installing binaries with their
343 timestamp set several hours in the future, especially if
344 you are running with local time set to GMT+X hours.
347 The ip6fw utility has been removed. The behavior provided by
348 ip6fw has been in ipfw2 for a good while and the rc.d scripts
349 have been updated to deal with it. There are some rules that
350 might not migrate cleanly. Use rc.firewall6 as a template to
354 The puc(4) driver has been overhauled. The ebus(4) and sbus(4)
355 attachments have been removed. Make sure to configure scc(4)
356 on sparc64. Note also that by default puc(4) will use uart(4)
357 and not sio(4) for serial ports because interrupt handling has
358 been optimized for multi-port serial cards and only uart(4)
359 implements the interface to support it.
362 The scc(4) driver replaces puc(4) for Serial Communications
363 Controllers (SCCs) like the Siemens SAB82532 and the Zilog
364 Z8530. On sparc64, it is advised to add scc(4) to the kernel
365 configuration to make sure that the serial ports remain
369 Most world/kernel related NO_* build options changed names.
370 New knobs have common prefixes WITHOUT_*/WITH_* (modelled
371 after FreeBSD ports) and should be set in /etc/src.conf
372 (the src.conf(5) manpage is provided). Full backwards
373 compatibility is maintained for the time being though it's
374 highly recommended to start moving old options out of the
375 system-wide /etc/make.conf file into the new /etc/src.conf
376 while also properly renaming them. More conversions will
377 likely follow. Posting to current@:
379 http://lists.freebsd.org/pipermail/freebsd-current/2006-March/061725.html
382 The NETSMBCRYPTO kernel option has been retired because its
383 functionality is always included in NETSMB and smbfs.ko now.
386 The TDFX_LINUX kernel option was retired and replaced by the
387 tdfx_linux device. The latter can be loaded as the 3dfx_linux.ko
388 kernel module. Loading it alone should suffice to get 3dfx support
389 for Linux apps because it will pull in 3dfx.ko and linux.ko through
393 The 'audit' group was added to support the new auditing functionality
394 in the base system. Be sure to follow the directions for updating,
395 including the requirement to run mergemaster -p.
398 The kernel ABI to file system modules was changed on i386.
399 Please make sure that your kernel and modules are in sync.
402 This actually occured some time ago, but installing the kernel
403 now also installs a bunch of symbol files for the kernel modules.
404 This increases the size of /boot/kernel to about 67Mbytes. You
405 will need twice this if you will eventually back this up to kernel.old
406 on your next install.
407 If you have a shortage of room in your root partition, you should add
408 -DINSTALL_NODEBUG to your make arguments or add INSTALL_NODEBUG="yes"
409 to your /etc/make.conf.
412 libc's malloc implementation has been replaced. This change has the
413 potential to uncover application bugs that previously went unnoticed.
414 See the malloc(3) manual page for more details.
417 The generic netgraph(4) cookie has been changed. If you upgrade
418 kernel passing this point, you also need to upgrade userland
419 and netgraph(4) utilities like ports/net/mpd or ports/net/mpd4.
422 si(4)'s device files now contain the unit number.
423 Uses of {cua,tty}A[0-9a-f] should be replaced by {cua,tty}A0[0-9a-f].
426 The kernel ABI was mostly destroyed due to a change in the size
427 of struct lock_object which is nested in other structures such
428 as mutexes which are nested in all sorts of other structures.
429 Make sure your kernel and modules are in sync.
432 The page coloring algorithm in the VM subsystem was converted
433 from tuning with kernel options to autotuning. Please remove
434 any PQ_* option except PQ_NOOPT from your kernel config.
437 The net80211-related tools in the tools/tools/ath directory
438 have been moved to tools/tools/net80211 and renamed with a
439 "wlan" prefix. Scripts that use them should be adjusted
443 Scripts in the local_startup directories (as defined in
444 /etc/defaults/rc.conf) that have the new rc.d semantics will
445 now be run as part of the base system rcorder. If there are
446 errors or problems with one of these local scripts, it could
447 cause boot problems. If you encounter such problems, boot in
448 single user mode, remove that script from the */rc.d directory.
449 Please report the problem to the port's maintainer, and the
450 freebsd-ports@freebsd.org mailing list.
453 The nodev mount option was deprecated in RELENG_6 (where it
454 was a no-op), and is now unsupported. If you have nodev or dev listed
455 in /etc/fstab, remove it, otherwise it will result in a mount error.
458 ABI between ipfw(4) and ipfw(8) has been changed. You need
459 to rebuild ipfw(8) when rebuilding kernel.
462 rp(4)'s device files now contain the unit number.
463 Uses of {cua,tty}R[0-9a-f] should be replaced by {cua,tty}R0[0-9a-f].
466 /etc/rc.d/ppp-user has been renamed to /etc/rc.d/ppp.
467 Its /etc/rc.conf.d configuration file has been `ppp' from
468 the beginning, and hence there is no need to touch it.
471 Now most modules get their build-time options from the kernel
472 configuration file. A few modules still have fixed options
473 due to their non-conformant implementation, but they will be
474 corrected eventually. You may need to review the options of
475 the modules in use, explicitly specify the non-default options
476 in the kernel configuration file, and rebuild the kernel and
480 kern.polling.enable sysctl MIB is now deprecated. Use ifconfig(8)
481 to turn polling(4) on your interfaces.
484 The old bridge(4) implementation was retired. The new
485 if_bridge(4) serves as a full functional replacement.
488 The ai_addrlen of a struct addrinfo was changed to a socklen_t
489 to conform to POSIX-2001. This change broke an ABI
490 compatibility on 64 bit architecture. You have to recompile
491 userland programs that use getaddrinfo(3) on 64 bit
495 RELENG_6 branched here.
498 The pccard_ifconfig rc.conf variable has been removed and a new
499 variable, ifconfig_DEFAULT has been introduced. Unlike
500 pccard_ifconfig, ifconfig_DEFAULT applies to ALL interfaces that
501 do not have ifconfig_ifn entries rather than just those in
502 removable_interfaces.
505 Some previous versions of PAM have permitted the use of
506 non-absolute paths in /etc/pam.conf or /etc/pam.d/* when referring
507 to third party PAM modules in /usr/local/lib. A change has been
508 made to require the use of absolute paths in order to avoid
509 ambiguity and dependence on library path configuration, which may
510 affect existing configurations.
513 Major changes to network interface API. All drivers must be
514 recompiled. Drivers not in the base system will need to be
515 updated to the new APIs.
518 Changes were made to kinfo_proc in sys/user.h. Please recompile
519 userland, or commands like `fstat', `pkill', `ps', `top' and `w'
520 will not behave correctly.
522 The API and ABI for hwpmc(4) have changed with the addition
523 of sampling support. Please recompile lib/libpmc(3) and
524 usr.sbin/{pmcstat,pmccontrol}.
527 The OpenBSD dhclient was imported in place of the ISC dhclient
528 and the network interface configuration scripts were updated
529 accordingly. If you use DHCP to configure your interfaces, you
530 must now run devd. Also, DNS updating was lost so you will need
531 to find a workaround if you use this feature.
533 The '_dhcp' user was added to support the OpenBSD dhclient. Be
534 sure to run mergemaster -p (like you are supposed to do every time
538 if_bridge was added to the tree. This has changed struct ifnet.
539 Please recompile userland and all network related modules.
542 The n_net of a struct netent was changed to an uint32_t, and
543 1st argument of getnetbyaddr() was changed to an uint32_t, to
544 conform to POSIX-2001. These changes broke an ABI
545 compatibility on 64 bit architecture. With these changes,
546 shlib major of libpcap was bumped. You have to recompile
547 userland programs that use getnetbyaddr(3), getnetbyname(3),
548 getnetent(3) and/or libpcap on 64 bit architecture.
551 Kernel parsing of extra options on '#!' first lines of shell
552 scripts has changed. Lines with multiple options likely will
553 fail after this date. For full details, please see
554 http://people.freebsd.org/~gad/Updating-20050528.txt
557 The packet filter (pf) code has been updated to OpenBSD 3.7
558 Please note the changed anchor syntax and the fact that
559 authpf(8) now needs a mounted fdescfs(5) to function.
562 The NO_MIXED_MODE kernel option has been removed from the i386
563 amd64 platforms as its use has been superceded by the new local
564 APIC timer code. Any kernel config files containing this option
568 The on-disk format of LC_CTYPE files was changed to be machine
569 independent. Please make sure NOT to use NO_CLEAN buildworld
570 when crossing this point. Crossing this point also requires
571 recompile or reinstall of all locale depended packages.
574 The ifi_epoch member of struct if_data has been changed to
575 contain the uptime at which the interface was created or the
576 statistics zeroed rather then the wall clock time because
577 wallclock time may go backwards. This should have no impact
578 unless an snmp implementation is using this value (I know of
582 The acpi_perf and acpi_throttle drivers are now part of the
583 acpi(4) main module. They are no longer built separately.
586 The layout of struct image_params has changed. You have to
587 recompile all compatibility modules (linux, svr4, etc) for use
591 The p4tcc driver has been merged into cpufreq(4). This makes
592 "options CPU_ENABLE_TCC" obsolete. Please load cpufreq.ko or
593 compile in "device cpufreq" to restore this functionality.
596 The responsibility of recomputing the file system summary of
597 a SoftUpdates-enabled dirty volume has been transferred to the
598 background fsck. A rebuild of fsck(8) utility is recommended
599 if you have updated the kernel.
601 To get the old behavior (recompute file system summary at mount
602 time), you can set vfs.ffs.compute_summary_at_mount=1 before
603 mounting the new volume.
606 The cpufreq import is complete. As part of this, the sysctls for
607 acpi(4) throttling have been removed. The power_profile script
608 has been updated, so you can use performance/economy_cpu_freq in
609 rc.conf(5) to set AC on/offline cpu frequencies.
612 NG_VERSION has been increased. Recompiling kernel (or ng_socket.ko)
613 requires recompiling libnetgraph and userland netgraph utilities.
616 Support for abbreviated forms of a number of ipfw options is
617 now deprecated. Warnings are printed to stderr indicating the
618 correct full form when a match occurs. Some abbreviations may
619 be supported at a later date based on user feedback. To be
620 considered for support, abbreviations must be in use prior to
621 this commit and unlikely to be confused with current key words.
624 By a popular demand, a lot of NOFOO options were renamed
625 to NO_FOO (see bsd.compat.mk for a full list). The old
626 spellings are still supported, but will cause annoying
627 warnings on stderr. Make sure you upgrade properly (see
628 the COMMON ITEMS: section later in this file).
631 Auto-loading of ancillary wlan modules such as wlan_wep has
632 been temporarily disabled; you need to statically configure
633 the modules you need into your kernel or explicitly load them
634 prior to use. Specifically, if you intend to use WEP encryption
635 with an 802.11 device load/configure wlan_wep; if you want to
636 use WPA with the ath driver load/configure wlan_tkip, wlan_ccmp,
637 and wlan_xauth as required.
640 The behaviour of ppp(8) has changed slightly. If lqr is enabled
641 (``enable lqr''), older versions would revert to LCP ECHO mode on
642 negotiation failure. Now, ``enable echo'' is required for this
643 behaviour. The ppp version number has been bumped to 3.4.2 to
647 The wlan support has been updated to split the crypto support
648 into separate modules. For static WEP you must configure the
649 wlan_wep module in your system or build and install the module
650 in place where it can be loaded (the kernel will auto-load
651 the module when a wep key is configured).
654 The ath driver has been updated to split the tx rate control
655 algorithm into a separate module. You need to include either
656 ath_rate_onoe or ath_rate_amrr when configuring the kernel.
659 Support for systems with an 80386 CPU has been removed. Please
660 use FreeBSD 5.x or earlier on systems with an 80386.
663 We have had a hack which would mount the root filesystem
664 R/W if the device were named 'md*'. As part of the vnode
665 work I'm doing I have had to remove this hack. People
666 building systems which use preloaded MD root filesystems
667 may need to insert a "/sbin/mount -u -o rw /dev/md0 /" in
668 their /etc/rc scripts.
671 FreeBSD 5.3 shipped here.
674 The size of struct tcpcb has changed again due to the removal
675 of RFC1644 T/TCP. You have to recompile userland programs that
676 read kmem for tcp sockets directly (netstat, sockstat, etc.)
679 The size of struct tcpcb has changed. You have to recompile
680 userland programs that read kmem for tcp sockets directly
681 (netstat, sockstat, etc.)
684 RELENG_5 branched here. For older entries, please see updating
685 in the RELENG_5 branch.
691 Avoid using make -j when upgrading. From time to time in the
692 past there have been problems using -j with buildworld and/or
693 installworld. This is especially true when upgrading between
694 "distant" versions (eg one that cross a major release boundary
695 or several minor releases, or when several months have passed
696 on the -current branch).
698 Sometimes, obscure build problems are the result of environment
699 poisoning. This can happen because the make utility reads its
700 environment when searching for values for global variables.
701 To run your build attempts in an "environmental clean room",
702 prefix all make commands with 'env -i '. See the env(1) manual
703 page for more details.
705 When upgrading from one major version to another it is generally
706 best to upgrade to the latest code in the currently installed branch
707 first, then do an upgrade to the new branch. This is the best-tested
708 upgrade path, and has the highest probability of being successful.
709 Please try this approach before reporting problems with a major
714 If you are updating from a prior version of FreeBSD (even one just
715 a few days old), you should follow this procedure. It is the most
716 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
718 make kernel-toolchain
719 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE
720 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE
722 To test a kernel once
723 ---------------------
724 If you just want to boot a kernel once (because you are not sure
725 if it works, or if you want to boot a known bad kernel to provide
726 debugging information) run
727 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
728 nextboot -k testkernel
730 To just build a kernel when you know that it won't mess you up
731 --------------------------------------------------------------
732 This assumes you are already running a 5.X system. Replace
733 ${arch} with the architecture of your machine (e.g. "i386",
734 "alpha", "amd64", "ia64", "pc98", "sparc64", etc).
736 cd src/sys/${arch}/conf
737 config KERNEL_NAME_HERE
738 cd ../compile/KERNEL_NAME_HERE
743 If this fails, go to the "To build a kernel" section.
745 To rebuild everything and install it on the current system.
746 -----------------------------------------------------------
747 # Note: sometimes if you are running current you gotta do more than
748 # is listed here if you are upgrading from a really old current.
750 <make sure you have good level 0 dumps>
752 make kernel KERNCONF=YOUR_KERNEL_HERE
754 <reboot in single user> [3]
762 To cross-install current onto a separate partition
763 --------------------------------------------------
764 # In this approach we use a separate partition to hold
765 # current's root, 'usr', and 'var' directories. A partition
766 # holding "/", "/usr" and "/var" should be about 2GB in
769 <make sure you have good level 0 dumps>
772 make buildkernel KERNCONF=YOUR_KERNEL_HERE
773 <maybe newfs current's root partition>
774 <mount current's root partition on directory ${CURRENT_ROOT}>
775 make installworld DESTDIR=${CURRENT_ROOT}
776 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
777 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT}
778 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd
779 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
780 <reboot into current>
781 <do a "native" rebuild/install as described in the previous section>
782 <maybe install compatibility libraries from src/lib/compat>
786 To upgrade in-place from 5.x-stable to current
787 ----------------------------------------------
788 <make sure you have good level 0 dumps>
790 make kernel KERNCONF=YOUR_KERNEL_HERE [8]
792 <reboot in single user> [3]
799 Make sure that you've read the UPDATING file to understand the
800 tweaks to various things you need. At this point in the life
801 cycle of current, things change often and you are on your own
802 to cope. The defaults can also change, so please read ALL of
803 the UPDATING entries.
805 Also, if you are tracking -current, you must be subscribed to
806 freebsd-current@freebsd.org. Make sure that before you update
807 your sources that you have read and understood all the recent
808 messages there. If in doubt, please track -stable which has
811 [1] If you have third party modules, such as vmware, you
812 should disable them at this point so they don't crash your
815 [3] From the bootblocks, boot -s, and then do
820 adjkerntz -i # if CMOS is wall time
821 Also, when doing a major release upgrade, it is required that
822 you boot into single user mode to do the installworld.
824 [4] Note: This step is non-optional. Failure to do this step
825 can result in a significant reduction in the functionality of the
826 system. Attempting to do it by hand is not recommended and those
827 that pursue this avenue should read this file carefully, as well
828 as the archives of freebsd-current and freebsd-hackers mailing lists
829 for potential gotchas.
831 [5] Usually this step is a noop. However, from time to time
832 you may need to do this if you get unknown user in the following
833 step. It never hurts to do it all the time. You may need to
834 install a new mergemaster (cd src/usr.sbin/mergemaster && make
835 install) after the buildworld before this step if you last updated
836 from current before 20020224 or from -stable before 20020408.
838 [8] In order to have a kernel that can run the 4.x binaries
839 needed to do an installworld, you must include the COMPAT_FREEBSD4
840 option in your kernel. Failure to do so may leave you with a system
841 that is hard to boot to recover. A similar kernel option COMPAT_FREEBSD5
842 is required to run the 5.x binaries on more recent kernels.
844 Make sure that you merge any new devices from GENERIC since the
845 last time you updated your kernel config file.
847 [9] When checking out sources, you must include the -P flag to have
848 cvs prune empty directories.
850 If CPUTYPE is defined in your /etc/make.conf, make sure to use the
851 "?=" instead of the "=" assignment operator, so that buildworld can
852 override the CPUTYPE if it needs to.
854 MAKEOBJDIRPREFIX must be defined in an environment variable, and
855 not on the command line, or in /etc/make.conf. buildworld will
856 warn if it is improperly defined.
859 This file contains a list, in reverse chronological order, of major
860 breakages in tracking -current. Not all things will be listed here,
861 and it only starts on October 16, 2004. Updating files can found in
862 previous releases if your system is older than this.
864 Copyright information:
866 Copyright 1998-2005 M. Warner Losh. All Rights Reserved.
868 Redistribution, publication, translation and use, with or without
869 modification, in full or in part, in any form or format of this
870 document are permitted without further permission from the author.
872 THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR
873 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
874 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
875 DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT,
876 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
877 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
878 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
879 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
880 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
881 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
882 POSSIBILITY OF SUCH DAMAGE.
884 If you find this document useful, and you want to, you may buy the
887 Contact Warner Losh if you have any questions about your use of