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 8.x IS SLOW ON IA64 OR SUN4V:
12 For ia64 the INVARIANTS and INVARIANT_SUPPORT kernel options
13 were left in the GENERIC kernel because the kernel does not
14 work properly without them. For sun4v all of the normal kernel
15 debugging tools present in HEAD were left in place because
16 sun4v support still needs work to become production ready.
22 The config(8) command has been updated to maintain compatibility
23 with config files from 8.0-RELEASE. You will need a new version
24 of config to build kernels (this version can be used from 8.0-RELEASE
25 forward). The buildworld target will generate it, so following
26 the instructions in this file for updating will work glitch-free.
27 Merely doing a make buildkernel without first doing a make buildworld
28 (or kernel-toolchain), or attempting to build a kernel using
29 traidtional methods will generate a config version warning, indicating
33 The rc.firewall and rc.firewall6 were unified, and
34 rc.firewall6 and rc.d/ip6fw were removed.
35 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc
36 variables are obsoleted. Instead, the following new rc
37 variables are added to rc.d/ipfw:
39 firewall_client_net_ipv6, firewall_simple_iif_ipv6,
40 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6,
41 firewall_simple_onet_ipv6
43 The meanings correspond to the relevant IPv4 variables.
46 COMPAT_IA32 has been added as an alias for COMPAT_FREEBSD32. A new
47 version of config(8) is required. The error message when you hit this
48 condition is confusing (COMPAT_FREEBSD32 duplicate option), when it
49 should really say "your config is too old to compile this new kernel."
52 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32
53 to allow 32-bit compatibility on non-x86 platforms. All kernel
54 configurations on amd64 and ia64 platforms using these options must
55 be modified accordingly.
58 Introduce the kernel thread "deadlock resolver" (which can be enabled
59 via the DEADLKRES option, see NOTES for more details) and the
60 sleepq_type() function for sleepqueues.
66 802.11s D3.03 support was committed. This is incompatible with
67 the previous code, which was based on D3.0.
70 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for
71 mount(8) and -a option for df(1) to see them.
74 Remove the option STOP_NMI. The default action is now to use NMI
75 only for KDB via the newly introduced function stop_cpus_hard()
76 and maintain stop_cpus() to just use a normal IPI_STOP on ia32
83 Bump the shared library version numbers for all libraries that
84 do not use symbol versioning as part of the 8.0-RELEASE cycle.
85 Bump __FreeBSD_version to 800105.
88 Due to changes in the implementation of virtual network stack
89 support, all network-related kernel modules must be recompiled.
90 As this change breaks the ABI, bump __FreeBSD_version to 800104.
93 The TOE interface to the TCP syncache has been modified to remove struct
94 tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. The
95 cxgb driver is the only TOE consumer affected by this change, and needs
96 to be recompiled along with the kernel. As this change breaks the ABI,
97 bump __FreeBSD_version to 800103.
100 Padding has been added to struct tcpcb, sackhint and tcpstat in
101 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst
102 maintainig the ABI. However, this change breaks the ABI, so bump
103 __FreeBSD_version to 800102. User space tools that rely on the size of
104 any of these structs (e.g. sockstat) need to be recompiled.
107 The NFS_LEGACYRPC option has been removed along with the old
108 kernel RPC implementation that this option selected. Kernel
109 configurations may need to be adjusted.
112 The network interface device nodes at /dev/net/<interface> have
113 been removed. All ioctl operations can be performed the normal
114 way using routing sockets. The kqueue functionality can
115 generally be replaced with routing sockets.
118 The documentation from the FreeBSD Documentation Project
119 (Handbook, FAQ, etc.) is now installed via packages by
120 sysinstall(8) and under the /usr/local/share/doc/freebsd
121 directory instead of /usr/share/doc.
124 The ABI of various structures related to the SYSV IPC API have
125 been changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43
126 kernel options now all require COMPAT_FREEBSD7.
127 Bump __FreeBSD_version to 800100.
130 Layout of struct vnet has changed as routing related variables
131 were moved to their own Vimage module. Modules need to be
132 recompiled. Bump __FreeBSD_version to 800099.
135 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023
136 and 1024 respectively. As long as no more than 16 groups per
137 process are used, no changes should be visible. When more
138 than 16 groups are used, old binaries may fail if they call
139 getgroups() or getgrouplist() with statically sized storage.
140 Recompiling will work around this, but applications should be
141 modified to use dynamically allocated storage for group arrays
142 as POSIX.1-2008 does not cap an implementation's number of
143 supported groups at NGROUPS_MAX+1 as previous versions did.
145 NFS and portalfs mounts may also be affected as the list of
146 groups is truncated to 16. Users of NFS who use more than 16
147 groups, should take care that negative group permissions are not
148 used on the exported file systems as they will not be reliable
149 unless a GSSAPI based authentication method is used.
152 The compiling option ADAPTIVE_LOCKMGRS has been introduced.
153 This option compiles in the support for adaptive spinning for lockmgrs
154 which want to enable it. The lockinit() function now accepts the
155 flag LK_ADAPTIVE in order to make the lock object subject to
156 adaptive spinning when both held in write and read mode.
159 The layout of the structure returned by IEEE80211_IOC_STA_INFO
160 has changed. User applications that use this ioctl need to be
164 The layout of struct thread has changed. Kernel and modules
168 The layout of structs ifnet, domain, protosw and vnet_net has
169 changed. Kernel modules need to be rebuilt.
170 Bump __FreeBSD_version to 800097.
173 window(1) has been removed from the base system. It can now be
174 installed from ports. The port is called misc/window.
177 The way we are storing and accessing `routing table' entries
178 has changed. Programs reading the FIB, like netstat, need to
182 A new netisr implementation has been added for FreeBSD 8. Network
183 file system modules, such as igmp, ipdivert, and others, should be
185 Bump __FreeBSD_version to 800096.
188 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose
192 Add VOP_ACCESSX(9). File system modules need to be rebuilt.
193 Bump __FreeBSD_version to 800094.
196 Add mnt_xflag field to 'struct mount'. File system modules
198 Bump __FreeBSD_version to 800093.
201 The compiling option ADAPTIVE_SX has been retired while it has been
202 introduced the option NO_ADAPTIVE_SX which handles the reversed logic.
203 The KPI for sx_init_flags() changes as accepting flags:
204 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag
205 has been introduced in order to handle the reversed logic.
206 Bump __FreeBSD_version to 800092.
209 Add support for hierarchical jails. Remove global securelevel.
210 Bump __FreeBSD_version to 800091.
213 The layout of struct vnet_net has changed, therefore modules
215 Bump __FreeBSD_version to 800090.
218 The newly imported zic(8) produces a new format in the
219 output. Please run tzsetup(8) to install the newly created
220 data to /etc/localtime.
223 The sysctl tree for the usb stack has renamed from hw.usb2.* to
224 hw.usb.* and is now consistent again with previous releases.
227 802.11 monitor mode support was revised and driver api's
228 were changed. Drivers dependent on net80211 now support
229 DLT_IEEE802_11_RADIO instead of DLT_IEEE802_11. No
230 user-visible data structures were changed but applications
231 that use DLT_IEEE802_11 may require changes.
232 Bump __FreeBSD_version to 800088.
235 The layout of the following structs has changed: sysctl_oid,
236 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet,
237 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or
238 panics may be experienced. World rebuild is required for
239 correctly checking networking state from userland.
240 Bump __FreeBSD_version to 800085.
243 MLDv2 and Source-Specific Multicast (SSM) have been merged
244 to the IPv6 stack. VIMAGE hooks are in but not yet used.
245 The implementation of SSM within FreeBSD's IPv6 stack closely
246 follows the IPv4 implementation.
248 For kernel developers:
250 * The most important changes are that the ip6_output() and
251 ip6_input() paths no longer take the IN6_MULTI_LOCK,
252 and this lock has been downgraded to a non-recursive mutex.
254 * As with the changes to the IPv4 stack to support SSM, filtering
255 of inbound multicast traffic must now be performed by transport
256 protocols within the IPv6 stack. This does not apply to TCP and
257 SCTP, however, it does apply to UDP in IPv6 and raw IPv6.
259 * The KPIs used by IPv6 multicast are similar to those used by
260 the IPv4 stack, with the following differences:
261 * im6o_mc_filter() is analogous to imo_multicast_filter().
262 * The legacy KAME entry points in6_joingroup and in6_leavegroup()
263 are shimmed to in6_mc_join() and in6_mc_leave() respectively.
264 * IN6_LOOKUP_MULTI() has been deprecated and removed.
265 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs
266 for MLDv1 have an additional 'timer' argument which is used to
267 jitter the initial membership report for the solicited-node
268 multicast membership on-link.
269 * This is not strictly needed for MLDv2, which already jitters
270 its report transmissions. However, the 'timer' argument is
271 preserved in case MLDv1 is active on the interface.
273 * The KAME linked-list based IPv6 membership implementation has
274 been refactored to use a vector similar to that used by the IPv4
276 Code which maintains a list of its own multicast memberships
277 internally, e.g. carp, has been updated to reflect the new
280 * There is a known Lock Order Reversal (LOR) due to in6_setscope()
281 acquiring the IF_AFDATA_LOCK and being called within ip6_output().
282 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an
283 implementation constraint which needs to be addressed in HEAD.
285 For application developers:
287 * The changes are broadly similar to those made for the IPv4
290 * The use of IPv4 and IPv6 multicast socket options on the same
291 socket, using mapped addresses, HAS NOT been tested or supported.
293 * There are a number of issues with the implementation of various
294 IPv6 multicast APIs which need to be resolved in the API surface
295 before the implementation is fully compatible with KAME userland
296 use, and these are mostly to do with interface index treatment.
298 * The literature available discusses the use of either the delta / ASM
299 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API
300 using setsourcefilter(3)/getsourcefilter(3). For more information
301 please refer to RFC 3768, 'Socket Interface Extensions for
302 Multicast Source Filters'.
304 * Applications which use the published RFC 3678 APIs should be fine.
306 For systems administrators:
308 * The mtest(8) utility has been refactored to support IPv6, in
309 addition to IPv4. Interface addresses are no longer accepted
310 as arguments, their names must be used instead. The utility
311 will map the interface name to its first IPv4 address as
312 returned by getifaddrs(3).
314 * The ifmcstat(8) utility has also been updated to print the MLDv2
315 endpoint state and source filter lists via sysctl(3).
317 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable
318 loopback of IPv6 multicast datagrams by default; it defaults to 1
319 to preserve the existing behaviour. Disabling multicast loopback is
320 recommended for optimal system performance.
322 * The IPv6 MROUTING code has been changed to examine this sysctl
323 instead of attempting to perform a group lookup before looping
324 back forwarded datagrams.
326 Bump __FreeBSD_version to 800084.
329 Implement low-level Bluetooth HCI API.
330 Bump __FreeBSD_version to 800083.
333 The layout of struct malloc_type, used by modules to register new
334 memory allocation types, has changed. Most modules will need to
335 be rebuilt or panics may be experienced.
336 Bump __FreeBSD_version to 800081.
339 Anticipate overflowing inp_flags - add inp_flags2.
340 This changes most offsets in inpcb, so checking v4 connection
341 state will require a world rebuild.
342 Bump __FreeBSD_version to 800080.
345 Add an llentry to struct route and struct route_in6. Modules
346 embedding a struct route will need to be recompiled.
347 Bump __FreeBSD_version to 800079.
350 The size of rt_metrics_lite and by extension rtentry has changed.
351 Networking administration apps will need to be recompiled.
352 The route command now supports show as an alias for get, weighting
353 of routes, sticky and nostick flags to alter the behavior of stateful
355 Bump __FreeBSD_version to 800078.
358 Do not use Giant for kbdmux(4) locking. This is wrong and
359 apparently causing more problems than it solves. This will
360 re-open the issue where interrupt handlers may race with
361 kbdmux(4) in polling mode. Typical symptoms include (but
362 not limited to) duplicated and/or missing characters when
363 low level console functions (such as gets) are used while
364 interrupts are enabled (for example geli password prompt,
365 mountroot prompt etc.). Disabling kbdmux(4) may help.
368 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed;
369 kernel modules referencing any of the above need to be recompiled.
370 Bump __FreeBSD_version to 800075.
373 GEOM_PART has become the default partition slicer for storage devices,
374 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It
375 introduces some changes:
377 MSDOS/EBR: the devices created from MSDOS extended partition entries
378 (EBR) can be named differently than with GEOM_MBR and are now symlinks
379 to devices with offset-based names. fstabs may need to be modified.
381 BSD: the "geometry does not match label" warning is harmless in most
382 cases but it points to problems in file system misalignment with
383 disk geometry. The "c" partition is now implicit, covers the whole
384 top-level drive and cannot be (mis)used by users.
386 General: Kernel dumps are now not allowed to be written to devices
387 whose partition types indicate they are meant to be used for file
388 systems (or, in case of MSDOS partitions, as something else than
391 Most of these changes date approximately from 200812.
394 The uscanner(4) driver has been removed from the kernel. This follows
395 Linux removing theirs in 2.6 and making libusb the default interface
399 The multicast forwarding code has been cleaned up. netstat(1)
400 only relies on KVM now for printing bandwidth upcall meters.
401 The IPv4 and IPv6 modules are split into ip_mroute_mod and
402 ip6_mroute_mod respectively. The config(5) options for statically
403 compiling this code remain the same, i.e. 'options MROUTING'.
406 Support for the IFF_NEEDSGIANT network interface flag has been
407 removed, which means that non-MPSAFE network device drivers are no
408 longer supported. In particular, if_ar, if_sr, and network device
409 drivers from the old (legacy) USB stack can no longer be built or
413 POSIX.1 Native Language Support (NLS) has been enabled in libc and
414 a bunch of new language catalog files have also been added.
415 This means that some common libc messages are now localized and
416 they depend on the LC_MESSAGES environmental variable.
419 The k8temp(4) driver has been renamed to amdtemp(4) since
420 support for K10 and K11 CPU families was added.
423 IGMPv3 and Source-Specific Multicast (SSM) have been merged
424 to the IPv4 stack. VIMAGE hooks are in but not yet used.
426 For kernel developers, the most important changes are that the
427 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(),
428 and this lock has been downgraded to a non-recursive mutex.
430 Transport protocols (UDP, Raw IP) are now responsible for filtering
431 inbound multicast traffic according to group membership and source
432 filters. The imo_multicast_filter() KPI exists for this purpose.
433 Transports which do not use multicast (SCTP, TCP) already reject
434 multicast by default. Forwarding and receive performance may improve
435 as a mutex acquisition is no longer needed in the ip_input()
436 low-level input path. in_addmulti() and in_delmulti() are shimmed
437 to new KPIs which exist to support SSM in-kernel.
439 For application developers, it is recommended that loopback of
440 multicast datagrams be disabled for best performance, as this
441 will still cause the lock to be taken for each looped-back
442 datagram transmission. The net.inet.ip.mcast.loop sysctl may
443 be tuned to 0 to disable loopback by default; it defaults to 1
444 to preserve the existing behaviour.
446 For systems administrators, to obtain best performance with
447 multicast reception and multiple groups, it is always recommended
448 that a card with a suitably precise hash filter is used. Hash
449 collisions will still result in the lock being taken within the
450 transport protocol input path to check group membership.
452 If deploying FreeBSD in an environment with IGMP snooping switches,
453 it is recommended that the net.inet.igmp.sendlocal sysctl remain
454 enabled; this forces 224.0.0.0/24 group membership to be announced
457 The size of 'struct igmpstat' has changed; netstat needs to be
458 recompiled to reflect this.
459 Bump __FreeBSD_version to 800070.
462 libusb20.so.1 is now installed as libusb.so.1 and the ports system
463 updated to use it. This requires a buildworld/installworld in order to
464 update the library and dependencies (usbconfig, etc). Its advisable to
465 rebuild all ports which uses libusb. More specific directions are given
466 in the ports collection UPDATING file. Any /etc/libmap.conf entries for
467 libusb are no longer required and can be removed.
470 A workaround is committed to allow the creation of System V shared
471 memory segment of size > 2 GB on the 64-bit architectures.
472 Due to a limitation of the existing ABI, the shm_segsz member
473 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is
474 wrong for large segments. Note that limits must be explicitly
475 raised to allow such segments to be created.
478 The layout of struct ifnet has changed, requiring a rebuild of all
479 network device driver modules.
482 The /dev handling for the new USB stack has changed, a
483 buildworld/installworld is required for libusb20.
486 The new USB2 stack has now been permanently moved in and all kernel and
487 module names reverted to their previous values (eg, usb, ehci, ohci,
488 ums, ...). The old usb stack can be compiled in by prefixing the name
489 with the letter 'o', the old usb modules have been removed.
490 Updating entry 20090216 for xorg and 20090215 for libmap may still
494 The rc.conf(5) option if_up_delay has been renamed to
495 defaultroute_delay to better reflect its purpose. If you have
496 customized this setting in /etc/rc.conf you need to update it to
500 xorg 7.4 wants to configure its input devices via hald which does not
501 yet work with USB2. If the keyboard/mouse does not work in xorg then
503 Option "AllowEmptyInput" "off"
504 to your ServerLayout section. This will cause X to use the configured
505 kbd and mouse sections from your xorg.conf.
508 The GENERIC kernels for all architectures now default to the new USB2
509 stack. No kernel config options or code have been removed so if a
510 problem arises please report it and optionally revert to the old USB
511 stack. If you are loading USB kernel modules or have a custom kernel
512 that includes GENERIC then ensure that usb names are also changed over,
513 eg uftdi -> usb2_serial_ftdi.
515 Older programs linked against the ports libusb 0.1 need to be
516 redirected to the new stack's libusb20. /etc/libmap.conf can
518 # Map old usb library to new one for usb2 stack
519 libusb-0.1.so.8 libusb20.so.1
522 All USB ethernet devices now attach as interfaces under the name ueN
523 (eg. ue0). This is to provide a predictable name as vendors often
524 change usb chipsets in a product without notice.
527 The ichsmb(4) driver has been changed to require SMBus slave
528 addresses be left-justified (xxxxxxx0b) rather than right-justified.
529 All of the other SMBus controller drivers require left-justified
530 slave addresses, so this change makes all the drivers provide the
534 INET6 statistics (struct ip6stat) was updated.
535 netstat(1) needs to be recompiled.
538 NTFS has been removed from GENERIC kernel on amd64 to match
539 GENERIC on i386. Should not cause any issues since mount_ntfs(8)
540 will load ntfs.ko module automatically when NTFS support is
541 actually needed, unless ntfs.ko is not installed or security
542 level prohibits loading kernel modules. If either is the case,
543 "options NTFS" has to be added into kernel config.
546 TCP Appropriate Byte Counting (RFC 3465) support added to kernel.
547 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to
548 800061. User space tools that rely on the size of struct tcpcb in
549 tcp_var.h (e.g. sockstat) need to be recompiled.
552 ng_tty(4) module updated to match the new TTY subsystem.
553 Due to API change, user-level applications must be updated.
554 New API support added to mpd5 CVS and expected to be present
555 in next mpd5.3 release.
558 With __FreeBSD_version 800060 the makefs tool is part of
559 the base system (it was a port).
562 The afdata and ifnet locks have been changed from mutexes to
563 rwlocks, network modules will need to be re-compiled.
566 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite.
567 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated.
568 The new code reduced struct rtentry{} by 16 bytes on 32-bit
569 architecture and 40 bytes on 64-bit architecture. The userland
570 applications "arp" and "ndp" have been updated accordingly.
571 The output from "netstat -r" shows only routing entries and
572 none of the L2 information.
575 __FreeBSD_version 800057 marks the switchover from the
576 binary ath hal to source code. Users must add the line:
578 options AH_SUPPORT_AR5416
580 to their kernel config files when specifying:
584 The ath_hal module no longer exists; the code is now compiled
585 together with the driver in the ath module. It is now
586 possible to tailor chip support (i.e. reduce the set of chips
587 and thereby the code size); consult ath_hal(4) for details.
590 __FreeBSD_version 800054 adds memory barriers to
591 <machine/atomic.h>, new interfaces to ifnet to facilitate
592 multiple hardware transmit queues for cards that support
593 them, and a lock-less ring-buffer implementation to
594 enable drivers to more efficiently manage queueing of
598 A new version of ZFS (version 13) has been merged to -HEAD.
599 This version has zpool attribute "listsnapshots" off by
600 default, which means "zfs list" does not show snapshots,
601 and is the same as Solaris behavior.
604 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled.
607 The uhci, ohci, ehci and slhci USB Host controller drivers have
608 been put into separate modules. If you load the usb module
609 separately through loader.conf you will need to load the
610 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0
611 controller add the following to loader.conf:
617 The ABI used by the PMC toolset has changed. Please keep
618 userland (libpmc(3)) and the kernel module (hwpmc(4)) in
622 atapci kernel module now includes only generic PCI ATA
623 driver. AHCI driver moved to ataahci kernel module.
624 All vendor-specific code moved into separate kernel modules:
625 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek,
626 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron,
627 atamarvell, atamicron, atanational, atanetcell, atanvidia,
628 atapromise, ataserverworks, atasiliconimage, atasis, atavia
631 The TTY subsystem of the kernel has been replaced by a new
632 implementation, which provides better scalability and an
633 improved driver model. Most common drivers have been migrated to
634 the new TTY subsystem, while others have not. The following
635 drivers have not yet been ported to the new TTY layer:
638 cy, digi, rc, rp, sio
644 ng_h4, ng_tty, ppp, sl, snp
646 Adding these drivers to your kernel configuration file shall
647 cause compilation to fail.
650 ntpd has been upgraded to 4.2.4p5.
653 OpenSSH has been upgraded to 5.1p1.
655 For many years, FreeBSD's version of OpenSSH preferred DSA
656 over RSA for host and user authentication keys. With this
657 upgrade, we've switched to the vendor's default of RSA over
658 DSA. This may cause upgraded clients to warn about unknown
659 host keys even for previously known hosts. Users should
660 follow the usual procedure for verifying host keys before
661 accepting the RSA key.
663 This can be circumvented by setting the "HostKeyAlgorithms"
664 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh
667 Please note that the sequence of keys offered for
668 authentication has been changed as well. You may want to
669 specify IdentityFile in a different order to revert this
673 The sio(4) driver has been removed from the i386 and amd64
674 kernel configuration files. This means uart(4) is now the
675 default serial port driver on those platforms as well.
677 To prevent collisions with the sio(4) driver, the uart(4) driver
678 uses different names for its device nodes. This means the
679 onboard serial port will now most likely be called "ttyu0"
680 instead of "ttyd0". You may need to reconfigure applications to
681 use the new device names.
683 When using the serial port as a boot console, be sure to update
684 /boot/device.hints and /etc/ttys before booting the new kernel.
685 If you forget to do so, you can still manually specify the hints
686 at the loader prompt:
688 set hint.uart.0.at="isa"
689 set hint.uart.0.port="0x3F8"
690 set hint.uart.0.flags="0x10"
691 set hint.uart.0.irq="4"
695 The gpt(8) utility has been removed. Use gpart(8) to partition
699 The version that Linuxulator emulates was changed from 2.4.2
700 to 2.6.16. If you experience any problems with Linux binaries
701 please try to set sysctl compat.linux.osrelease to 2.4.2 and
702 if it fixes the problem contact emulation mailing list.
705 ISDN4BSD (I4B) was removed from the src tree. You may need to
706 update a your kernel configuration and remove relevant entries.
709 I have checked in code to support multiple routing tables.
710 See the man pages setfib(1) and setfib(2).
711 This is a hopefully backwards compatible version,
712 but to make use of it you need to compile your kernel
713 with options ROUTETABLES=2 (or more up to 16).
716 The 802.11 wireless support was redone to enable multi-bss
717 operation on devices that are capable. The underlying device
718 is no longer used directly but instead wlanX devices are
719 cloned with ifconfig. This requires changes to rc.conf files.
721 ifconfig_ath0="WPA DHCP"
724 ifconfig_wlan0="WPA DHCP"
725 see rc.conf(5) for more details. In addition, mergemaster of
726 /etc/rc.d is highly recommended. Simultaneous update of userland
727 and kernel wouldn't hurt either.
729 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta
730 modules were merged into the base wlan module. All references
731 to these modules (e.g. in kernel config files) must be removed.
734 psm(4) has gained write(2) support in native operation level.
735 Arbitrary commands can be written to /dev/psm%d and status can
736 be read back from it. Therefore, an application is responsible
737 for status validation and error recovery. It is a no-op in
738 other operation levels.
741 Support for KSE threading has been removed from the kernel. To
742 run legacy applications linked against KSE libmap.conf may
743 be used. The following libmap.conf may be used to ensure
744 compatibility with any prior release:
746 libpthread.so.1 libthr.so.1
747 libpthread.so.2 libthr.so.2
748 libkse.so.3 libthr.so.3
751 The layout of struct vmspace has changed. This affects libkvm
752 and any executables that link against libkvm and use the
753 kvm_getprocs() function. In particular, but not exclusively,
754 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1).
755 The effects are minimal, but it's advisable to upgrade world
759 The latest em driver no longer has support in it for the
760 82575 adapter, this is now moved to the igb driver. The
761 split was done to make new features that are incompatible
762 with older hardware easier to do.
765 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4),
766 likewise the kernel option is now GEOM_LINUX_LVM.
769 The default NFS mount mode has changed from UDP to TCP for
770 increased reliability. If you rely on (insecurely) NFS
771 mounting across a firewall you may need to update your
775 Belatedly note the addition of m_collapse for compacting
779 The fts(3) structures have been changed to use adequate
780 integer types for their members and so to be able to cope
781 with huge file trees. The old fts(3) ABI is preserved
782 through symbol versioning in libc, so third-party binaries
783 using fts(3) should still work, although they will not take
784 advantage of the extended types. At the same time, some
785 third-party software might fail to build after this change
786 due to unportable assumptions made in its source code about
787 fts(3) structure members. Such software should be fixed
788 by its vendor or, in the worst case, in the ports tree.
789 FreeBSD_version 800015 marks this change for the unlikely
790 case that a portable fix is impossible.
793 To upgrade to -current after this date, you must be running
794 FreeBSD not older than 6.0-RELEASE. Upgrading to -current
795 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems.
798 The ADAPTIVE_GIANT kernel option has been retired because its
799 functionality is the default now.
802 The AT keyboard emulation of sunkbd(4) has been turned on
803 by default. In order to make the special symbols of the Sun
804 keyboards driven by sunkbd(4) work under X these now have
805 to be configured the same way as Sun USB keyboards driven
806 by ukbd(4) (which also does AT keyboard emulation), f.e.:
808 Option "XkbLayout" "us"
809 Option "XkbRules" "xorg"
810 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us"
813 It has been decided that it is desirable to provide ABI
814 backwards compatibility to the FreeBSD 4/5/6 versions of the
815 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was
816 broken with the introduction of PCI domain support (see the
817 20070930 entry). Unfortunately, this required the ABI of
818 PCIOCGETCONF to be broken again in order to be able to
819 provide backwards compatibility to the old version of that
820 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled
821 again. As for prominent ports this affects neither pciutils
822 nor xorg-server this time, the hal port needs to be rebuilt
826 The misnamed kthread_create() and friends have been renamed
827 to kproc_create() etc. Many of the callers already
829 I will return kthread_create() and friends in a while
830 with implementations that actually create threads, not procs.
831 Renaming corresponds with version 800002.
837 Setting WITHOUT_LIBPTHREAD now means WITHOUT_LIBKSE and
838 WITHOUT_LIBTHR are set.
841 The PCI code has been made aware of PCI domains. This means that
842 the location strings as used by pciconf(8) etc are now in the
843 following format: pci<domain>:<bus>:<device>[:<function>]. It
844 also means that consumers of <sys/pciio.h> potentially need to
845 be recompiled; this includes the hal and xorg-server ports.
848 The caching daemon (cached) was renamed to nscd. nscd.conf
849 configuration file should be used instead of cached.conf and
850 nscd_enable, nscd_pidfile and nscd_flags options should be used
851 instead of cached_enable, cached_pidfile and cached_flags in
855 The getfacl(1) utility now prints owning user and group name
856 instead of owning uid and gid in the three line comment header.
857 This is the same behavior as getfacl(1) on Solaris and Linux.
860 The new IPsec code is now compiled in using the IPSEC option. The
861 IPSEC option now requires "device crypto" be defined in your kernel
862 configuration. The FAST_IPSEC kernel option is now deprecated.
865 The packet filter (pf) code has been updated to OpenBSD 4.1 Please
866 note the changed syntax - keep state is now on by default. Also
867 note the fact that ftp-proxy(8) has been changed from bottom up and
868 has been moved from libexec to usr/sbin. Changes in the ALTQ
869 handling also affect users of IPFW's ALTQ capabilities.
872 Remove KAME IPsec in favor of FAST_IPSEC, which is now the
873 only IPsec supported by FreeBSD. The new IPsec stack
874 supports both IPv4 and IPv6. The kernel option will change
875 after the code changes have settled in. For now the kernel
876 option IPSEC is deprecated and FAST_IPSEC is the only option, that
877 will change after some settling time.
880 The wicontrol(8) utility has been removed from the base system. wi(4)
881 cards should be configured using ifconfig(8), see the man page for more
885 The i386/amd64 GENERIC kernel now defaults to the nfe(4) driver
886 instead of the nve(4) driver. Please update your configuration
890 By default, /etc/rc.d/sendmail no longer rebuilds the aliases
891 database if it is missing or older than the aliases file. If
892 desired, set the new rc.conf option sendmail_rebuild_aliases
893 to "YES" to restore that functionality.
896 The IPv4 multicast socket code has been considerably modified, and
897 moved to the file sys/netinet/in_mcast.c. Initial support for the
898 RFC 3678 Source-Specific Multicast Socket API has been added to
899 the IPv4 network stack.
901 Strict multicast and broadcast reception is now the default for
902 UDP/IPv4 sockets; the net.inet.udp.strict_mcast_mship sysctl variable
903 has now been removed.
905 The RFC 1724 hack for interface selection has been removed; the use
906 of the Linux-derived ip_mreqn structure with IP_MULTICAST_IF has
907 been added to replace it. Consumers such as routed will soon be
908 updated to reflect this.
910 These changes affect users who are running routed(8) or rdisc(8)
911 from the FreeBSD base system on point-to-point or unnumbered
915 The net80211 layer has changed significantly and all wireless
916 drivers that depend on it need to be recompiled. Further these
917 changes require that any program that interacts with the wireless
918 support in the kernel be recompiled; this includes: ifconfig,
919 wpa_supplicant, hostapd, and wlanstats. Users must also, for
920 the moment, kldload the wlan_scan_sta and/or wlan_scan_ap modules
921 if they use modules for wireless support. These modules implement
922 scanning support for station and ap modes, respectively. Failure
923 to load the appropriate module before marking a wireless interface
924 up will result in a message to the console and the device not
928 The pam_nologin(8) module ceases to provide an authentication
929 function and starts providing an account management function.
930 Consequent changes to /etc/pam.d should be brought in using
931 mergemaster(8). Third-party files in /usr/local/etc/pam.d may
932 need manual editing as follows. Locate this line (or similar):
934 auth required pam_nologin.so no_warn
936 and change it according to this example:
938 account required pam_nologin.so no_warn
940 That is, the first word needs to be changed from "auth" to
941 "account". The new line can be moved to the account section
942 within the file for clarity. Not updating pam.conf(5) files
943 will result in nologin(5) ignored by the respective services.
946 The ether_ioctl() function has been synchronized with ioctl(2)
947 and ifnet.if_ioctl. Due to that, the size of one of its arguments
948 has changed on 64-bit architectures. All kernel modules using
949 ether_ioctl() need to be rebuilt on such architectures.
952 Improved INCLUDE_CONFIG_FILE support has been introduced to the
953 config(8) utility. In order to take advantage of this new
954 functionality, you are expected to recompile and install
955 src/usr.sbin/config. If you don't rebuild config(8), and your
956 kernel configuration depends on INCLUDE_CONFIG_FILE, the kernel
957 build will be broken because of a missing "kernconfstring"
961 Symbol versioning is enabled by default. To disable it, use
962 option WITHOUT_SYMVER. It is not advisable to attempt to
963 disable symbol versioning once it is enabled; your installworld
964 will break because a symbol version-less libc will get installed
965 before the install tools. As a result, the old install tools,
966 which previously had symbol dependencies to FBSD_1.0, will fail
967 because the freshly installed libc will not have them.
969 The default threading library (providing "libpthread") has been
970 changed to libthr. If you wish to have libkse as your default,
971 use option DEFAULT_THREAD_LIB=libkse for the buildworld.
974 The ABI breakage in sendmail(8)'s libmilter has been repaired
975 so it is no longer necessary to recompile mail filters (aka,
976 milters). If you recompiled mail filters after the 20070408
977 note, it is not necessary to recompile them again.
980 The new trunk(4) driver has been renamed to lagg(4) as it better
981 reflects its purpose. ifconfig will need to be recompiled.
984 sendmail(8) has been updated to version 8.14.1. Mail filters
985 (aka, milters) compiled against the libmilter included in the
986 base operating system should be recompiled.
989 Firmwares for ipw(4) and iwi(4) are now included in the base tree.
990 In order to use them one must agree to the respective LICENSE in
991 share/doc/legal and define legal.intel_<name>.license_ack=1 via
992 loader.conf(5) or kenv(1). Make sure to deinstall the now
993 deprecated modules from the respective firmware ports.
996 The name resolution/mapping functions addr2ascii(3) and ascii2addr(3)
997 were removed from FreeBSD's libc. These originally came from INRIA
998 IPv6. Nothing in FreeBSD ever used them. They may be regarded as
999 deprecated in previous releases.
1000 The AF_LINK support for getnameinfo(3) was merged from NetBSD to
1001 replace it as a more portable (and re-entrant) API.
1004 To support interrupt filtering a modification to the newbus API
1005 has occurred, ABI was broken and __FreeBSD_version was bumped
1006 to 700031. Please make sure that your kernel and modules are in
1007 sync. For more info:
1008 http://docs.freebsd.org/cgi/mid.cgi?20070221233124.GA13941
1011 The IPv6 multicast forwarding code may now be loaded into GENERIC
1012 kernels by loading the ip_mroute.ko module. This is built into the
1013 module unless WITHOUT_INET6 or WITHOUT_INET6_SUPPORT options are
1014 set; see src.conf(5) for more information.
1017 The output of netstat -r has changed. Without -n, we now only
1018 print a "network name" without the prefix length if the network
1019 address and mask exactly match a Class A/B/C network, and an entry
1020 exists in the nsswitch "networks" map.
1021 With -n, we print the full unabbreviated CIDR network prefix in
1022 the form "a.b.c.d/p". 0.0.0.0/0 is always printed as "default".
1023 This change is in preparation for changes such as equal-cost
1024 multipath, and to more generally assist operational deployment
1025 of FreeBSD as a modern IPv4 router.
1028 PIM has been turned on by default in the IPv4 multicast
1029 routing code. The kernel option 'PIM' has now been removed.
1030 PIM is now built by default if option 'MROUTING' is specified.
1031 It may now be loaded into GENERIC kernels by loading the
1032 ip_mroute.ko module.
1035 Support for IPIP tunnels (VIFF_TUNNEL) in IPv4 multicast routing
1036 has been removed. Its functionality may be achieved by explicitly
1037 configuring gif(4) interfaces and using the 'phyint' keyword in
1039 XORP does not support source-routed IPv4 multicast tunnels nor the
1040 integrated IPIP tunneling, therefore it is not affected by this
1041 change. The __FreeBSD_version macro has been bumped to 700030.
1044 Support for PCI Message Signalled Interrupts has been
1045 re-enabled in the bge driver, only for those chips which are
1046 believed to support it properly. If there are any problems,
1047 MSI can be disabled completely by setting the
1048 'hw.pci.enable_msi' and 'hw.pci.enable_msix' tunables to 0
1052 Support for PCI Message Signalled Interrupts has been
1053 disabled again in the bge driver. Many revisions of the
1054 hardware fail to support it properly. Support can be
1055 re-enabled by removing the #define of BGE_DISABLE_MSI in
1056 "src/sys/dev/bge/if_bge.c".
1059 Support for PCI Message Signalled Interrupts has been added
1060 to the bge driver. If there are any problems, MSI can be
1061 disabled completely by setting the 'hw.pci.enable_msi' and
1062 'hw.pci.enable_msix' tunables to 0 in the loader.
1065 The removal of several facets of the experimental Threading
1066 system from the kernel means that the proc and thread structures
1067 have changed quite a bit. I suggest all kernel modules that might
1068 reference these structures be recompiled.. Especially the
1072 Sound infrastructure has been updated with various fixes and
1073 improvements. Most of the changes are pretty much transparent,
1074 with exceptions of followings:
1075 1) All sound driver specific sysctls (hw.snd.pcm%d.*) have been
1076 moved to their own dev sysctl nodes, for example:
1077 hw.snd.pcm0.vchans -> dev.pcm.0.vchans
1078 2) /dev/dspr%d.%d has been deprecated. Each channel now has its
1079 own chardev in the form of "dsp%d.<function>%d", where <function>
1080 is p = playback, r = record and v = virtual, respectively. Users
1081 are encouraged to use these devs instead of (old) "/dev/dsp%d.%d".
1082 This does not affect those who are using "/dev/dsp".
1085 geom(4)'s gmirror(8) class metadata structure has been
1086 rev'd from v3 to v4. If you update across this point and
1087 your metadata is converted for you, you will not be easily
1088 able to downgrade since the /boot/kernel.old/geom_mirror.ko
1089 kernel module will be unable to read the v4 metadata. You
1090 can resolve this by doing from the loader(8) prompt:
1092 set vfs.root.mountfrom="ufs:/dev/XXX"
1094 where XXX is the root slice of one of the disks that composed
1095 the mirror (i.e.: /dev/ad0s1a). You can then rebuild
1096 the array the same way you built it originally.
1099 The following binaries have been disconnected from the build:
1100 mount_devfs, mount_ext2fs, mount_fdescfs, mount_procfs, mount_linprocfs,
1101 and mount_std. The functionality of these programs has been
1102 moved into the mount program. For example, to mount a devfs
1103 filesystem, instead of using mount_devfs, use: "mount -t devfs".
1104 This does not affect entries in /etc/fstab, since entries in
1105 /etc/fstab are always processed with "mount -t fstype".
1108 Support for PCI Message Signalled Interrupts on i386 and amd64
1109 has been added to the kernel and various drivers will soon be
1110 updated to use MSI when it is available. If there are any problems,
1111 MSI can be disabled completely by setting the 'hw.pci.enable_msi'
1112 and 'hw.pci.enable_msix' tunables to 0 in the loader.
1115 The MUTEX_PROFILING option has been renamed to LOCK_PROFILING.
1116 The lockmgr object layout has been changed as a result of having
1117 a lock_object embedded in it. As a consequence all file system
1118 kernel modules must be re-compiled. The mutex profiling man page
1119 has not yet been updated to reflect this change.
1122 KSE in the kernel has now been made optional and turned on by
1123 default. Use 'nooption KSE' in your kernel config to turn it
1124 off. All kernel modules *must* be recompiled after this change.
1125 There-after, modules from a KSE kernel should be compatible with
1126 modules from a NOKSE kernel due to the temporary padding fields
1127 added to 'struct proc'.
1130 mrouted and its utilities have been removed from the base system.
1133 Some ioctl(2) command codes have changed. Full backward ABI
1134 compatibility is provided if the "options COMPAT_FREEBSD6" is
1135 present in the kernel configuration file. Make sure to add
1136 this option to your kernel config file, or recompile X.Org
1137 and the rest of ports; otherwise they may refuse to work.
1140 tcpslice has been removed from the base system.
1143 The sizes of struct tcpcb (and struct xtcpcb) have changed due to
1144 the rewrite of TCP syncookies. Tools like netstat, sockstat, and
1145 systat needs to be rebuilt.
1148 libpcap updated to v0.9.4 and tcpdump to v3.9.4
1151 The IPFIREWALL_FORWARD_EXTENDED option is gone and the behaviour
1152 for IPFIREWALL_FORWARD is now as it was before when it was first
1153 committed and for years after. The behaviour is now ON.
1156 enigma(1)/crypt(1) utility has been changed on 64 bit architectures.
1157 Now it can decrypt files created from different architectures.
1158 Unfortunately, it is no longer able to decrypt a cipher text
1159 generated with an older version on 64 bit architectures.
1160 If you have such a file, you need old utility to decrypt it.
1163 The interface version of the i4b kernel part has changed. So
1164 after updating the kernel sources and compiling a new kernel,
1165 the i4b user space tools in "/usr/src/usr.sbin/i4b" must also
1166 be rebuilt, and vice versa.
1169 The XBOX kernel now defaults to the nfe(4) driver instead of
1170 the nve(4) driver. Please update your configuration
1174 The i386-only lnc(4) driver for the AMD Am7900 LANCE and Am79C9xx
1175 PCnet family of NICs has been removed. The new le(4) driver serves
1176 as an equivalent but cross-platform replacement with the pcn(4)
1177 driver still providing performance-optimized support for the subset
1178 of AMD Am79C971 PCnet-FAST and greater chips as before.
1181 The machdep.* sysctls and the adjkerntz utility have been
1182 modified a bit. The new adjkerntz utility uses the new
1183 sysctl names and sysctlbyname() calls, so it may be impossible
1184 to run an old /sbin/adjkerntz utility in single-user mode
1185 with a new kernel. Replace the `adjkerntz -i' step before
1186 `make installworld' with:
1188 /usr/obj/usr/src/sbin/adjkerntz/adjkerntz -i
1190 and proceed as usual with the rest of the installworld-stage
1191 steps. Otherwise, you risk installing binaries with their
1192 timestamp set several hours in the future, especially if
1193 you are running with local time set to GMT+X hours.
1196 The ip6fw utility has been removed. The behavior provided by
1197 ip6fw has been in ipfw2 for a good while and the rc.d scripts
1198 have been updated to deal with it. There are some rules that
1199 might not migrate cleanly. Use rc.firewall6 as a template to
1203 The puc(4) driver has been overhauled. The ebus(4) and sbus(4)
1204 attachments have been removed. Make sure to configure scc(4)
1205 on sparc64. Note also that by default puc(4) will use uart(4)
1206 and not sio(4) for serial ports because interrupt handling has
1207 been optimized for multi-port serial cards and only uart(4)
1208 implements the interface to support it.
1211 The scc(4) driver replaces puc(4) for Serial Communications
1212 Controllers (SCCs) like the Siemens SAB82532 and the Zilog
1213 Z8530. On sparc64, it is advised to add scc(4) to the kernel
1214 configuration to make sure that the serial ports remain
1218 Most world/kernel related NO_* build options changed names.
1219 New knobs have common prefixes WITHOUT_*/WITH_* (modelled
1220 after FreeBSD ports) and should be set in /etc/src.conf
1221 (the src.conf(5) manpage is provided). Full backwards
1222 compatibility is maintained for the time being though it's
1223 highly recommended to start moving old options out of the
1224 system-wide /etc/make.conf file into the new /etc/src.conf
1225 while also properly renaming them. More conversions will
1226 likely follow. Posting to current@:
1228 http://lists.freebsd.org/pipermail/freebsd-current/2006-March/061725.html
1231 The NETSMBCRYPTO kernel option has been retired because its
1232 functionality is always included in NETSMB and smbfs.ko now.
1235 The TDFX_LINUX kernel option was retired and replaced by the
1236 tdfx_linux device. The latter can be loaded as the 3dfx_linux.ko
1237 kernel module. Loading it alone should suffice to get 3dfx support
1238 for Linux apps because it will pull in 3dfx.ko and linux.ko through
1242 The 'audit' group was added to support the new auditing functionality
1243 in the base system. Be sure to follow the directions for updating,
1244 including the requirement to run mergemaster -p.
1247 The kernel ABI to file system modules was changed on i386.
1248 Please make sure that your kernel and modules are in sync.
1251 This actually occured some time ago, but installing the kernel
1252 now also installs a bunch of symbol files for the kernel modules.
1253 This increases the size of /boot/kernel to about 67Mbytes. You
1254 will need twice this if you will eventually back this up to kernel.old
1255 on your next install.
1256 If you have a shortage of room in your root partition, you should add
1257 -DINSTALL_NODEBUG to your make arguments or add INSTALL_NODEBUG="yes"
1258 to your /etc/make.conf.
1261 libc's malloc implementation has been replaced. This change has the
1262 potential to uncover application bugs that previously went unnoticed.
1263 See the malloc(3) manual page for more details.
1266 The generic netgraph(4) cookie has been changed. If you upgrade
1267 kernel passing this point, you also need to upgrade userland
1268 and netgraph(4) utilities like ports/net/mpd or ports/net/mpd4.
1271 si(4)'s device files now contain the unit number.
1272 Uses of {cua,tty}A[0-9a-f] should be replaced by {cua,tty}A0[0-9a-f].
1275 The kernel ABI was mostly destroyed due to a change in the size
1276 of struct lock_object which is nested in other structures such
1277 as mutexes which are nested in all sorts of other structures.
1278 Make sure your kernel and modules are in sync.
1281 The page coloring algorithm in the VM subsystem was converted
1282 from tuning with kernel options to autotuning. Please remove
1283 any PQ_* option except PQ_NOOPT from your kernel config.
1286 The net80211-related tools in the tools/tools/ath directory
1287 have been moved to tools/tools/net80211 and renamed with a
1288 "wlan" prefix. Scripts that use them should be adjusted
1292 Scripts in the local_startup directories (as defined in
1293 /etc/defaults/rc.conf) that have the new rc.d semantics will
1294 now be run as part of the base system rcorder. If there are
1295 errors or problems with one of these local scripts, it could
1296 cause boot problems. If you encounter such problems, boot in
1297 single user mode, remove that script from the */rc.d directory.
1298 Please report the problem to the port's maintainer, and the
1299 freebsd-ports@freebsd.org mailing list.
1302 The nodev mount option was deprecated in RELENG_6 (where it
1303 was a no-op), and is now unsupported. If you have nodev or dev listed
1304 in /etc/fstab, remove it, otherwise it will result in a mount error.
1307 ABI between ipfw(4) and ipfw(8) has been changed. You need
1308 to rebuild ipfw(8) when rebuilding kernel.
1311 rp(4)'s device files now contain the unit number.
1312 Uses of {cua,tty}R[0-9a-f] should be replaced by {cua,tty}R0[0-9a-f].
1315 /etc/rc.d/ppp-user has been renamed to /etc/rc.d/ppp.
1316 Its /etc/rc.conf.d configuration file has been `ppp' from
1317 the beginning, and hence there is no need to touch it.
1320 Now most modules get their build-time options from the kernel
1321 configuration file. A few modules still have fixed options
1322 due to their non-conformant implementation, but they will be
1323 corrected eventually. You may need to review the options of
1324 the modules in use, explicitly specify the non-default options
1325 in the kernel configuration file, and rebuild the kernel and
1329 kern.polling.enable sysctl MIB is now deprecated. Use ifconfig(8)
1330 to turn polling(4) on your interfaces.
1333 The old bridge(4) implementation was retired. The new
1334 if_bridge(4) serves as a full functional replacement.
1337 The ai_addrlen of a struct addrinfo was changed to a socklen_t
1338 to conform to POSIX-2001. This change broke an ABI
1339 compatibility on 64 bit architecture. You have to recompile
1340 userland programs that use getaddrinfo(3) on 64 bit
1344 RELENG_6 branched here.
1347 The pccard_ifconfig rc.conf variable has been removed and a new
1348 variable, ifconfig_DEFAULT has been introduced. Unlike
1349 pccard_ifconfig, ifconfig_DEFAULT applies to ALL interfaces that
1350 do not have ifconfig_ifn entries rather than just those in
1351 removable_interfaces.
1354 Some previous versions of PAM have permitted the use of
1355 non-absolute paths in /etc/pam.conf or /etc/pam.d/* when referring
1356 to third party PAM modules in /usr/local/lib. A change has been
1357 made to require the use of absolute paths in order to avoid
1358 ambiguity and dependence on library path configuration, which may
1359 affect existing configurations.
1362 Major changes to network interface API. All drivers must be
1363 recompiled. Drivers not in the base system will need to be
1364 updated to the new APIs.
1367 Changes were made to kinfo_proc in sys/user.h. Please recompile
1368 userland, or commands like `fstat', `pkill', `ps', `top' and `w'
1369 will not behave correctly.
1371 The API and ABI for hwpmc(4) have changed with the addition
1372 of sampling support. Please recompile lib/libpmc(3) and
1373 usr.sbin/{pmcstat,pmccontrol}.
1376 The OpenBSD dhclient was imported in place of the ISC dhclient
1377 and the network interface configuration scripts were updated
1378 accordingly. If you use DHCP to configure your interfaces, you
1379 must now run devd. Also, DNS updating was lost so you will need
1380 to find a workaround if you use this feature.
1382 The '_dhcp' user was added to support the OpenBSD dhclient. Be
1383 sure to run mergemaster -p (like you are supposed to do every time
1387 if_bridge was added to the tree. This has changed struct ifnet.
1388 Please recompile userland and all network related modules.
1391 The n_net of a struct netent was changed to an uint32_t, and
1392 1st argument of getnetbyaddr() was changed to an uint32_t, to
1393 conform to POSIX-2001. These changes broke an ABI
1394 compatibility on 64 bit architecture. With these changes,
1395 shlib major of libpcap was bumped. You have to recompile
1396 userland programs that use getnetbyaddr(3), getnetbyname(3),
1397 getnetent(3) and/or libpcap on 64 bit architecture.
1400 Kernel parsing of extra options on '#!' first lines of shell
1401 scripts has changed. Lines with multiple options likely will
1402 fail after this date. For full details, please see
1403 http://people.freebsd.org/~gad/Updating-20050528.txt
1406 The packet filter (pf) code has been updated to OpenBSD 3.7
1407 Please note the changed anchor syntax and the fact that
1408 authpf(8) now needs a mounted fdescfs(5) to function.
1411 The NO_MIXED_MODE kernel option has been removed from the i386
1412 amd64 platforms as its use has been superceded by the new local
1413 APIC timer code. Any kernel config files containing this option
1417 The on-disk format of LC_CTYPE files was changed to be machine
1418 independent. Please make sure NOT to use NO_CLEAN buildworld
1419 when crossing this point. Crossing this point also requires
1420 recompile or reinstall of all locale depended packages.
1423 The ifi_epoch member of struct if_data has been changed to
1424 contain the uptime at which the interface was created or the
1425 statistics zeroed rather then the wall clock time because
1426 wallclock time may go backwards. This should have no impact
1427 unless an snmp implementation is using this value (I know of
1428 none at this point.)
1431 The acpi_perf and acpi_throttle drivers are now part of the
1432 acpi(4) main module. They are no longer built separately.
1435 The layout of struct image_params has changed. You have to
1436 recompile all compatibility modules (linux, svr4, etc) for use
1437 with the new kernel.
1440 The p4tcc driver has been merged into cpufreq(4). This makes
1441 "options CPU_ENABLE_TCC" obsolete. Please load cpufreq.ko or
1442 compile in "device cpufreq" to restore this functionality.
1445 The responsibility of recomputing the file system summary of
1446 a SoftUpdates-enabled dirty volume has been transferred to the
1447 background fsck. A rebuild of fsck(8) utility is recommended
1448 if you have updated the kernel.
1450 To get the old behavior (recompute file system summary at mount
1451 time), you can set vfs.ffs.compute_summary_at_mount=1 before
1452 mounting the new volume.
1455 The cpufreq import is complete. As part of this, the sysctls for
1456 acpi(4) throttling have been removed. The power_profile script
1457 has been updated, so you can use performance/economy_cpu_freq in
1458 rc.conf(5) to set AC on/offline cpu frequencies.
1461 NG_VERSION has been increased. Recompiling kernel (or ng_socket.ko)
1462 requires recompiling libnetgraph and userland netgraph utilities.
1465 Support for abbreviated forms of a number of ipfw options is
1466 now deprecated. Warnings are printed to stderr indicating the
1467 correct full form when a match occurs. Some abbreviations may
1468 be supported at a later date based on user feedback. To be
1469 considered for support, abbreviations must be in use prior to
1470 this commit and unlikely to be confused with current key words.
1473 By a popular demand, a lot of NOFOO options were renamed
1474 to NO_FOO (see bsd.compat.mk for a full list). The old
1475 spellings are still supported, but will cause annoying
1476 warnings on stderr. Make sure you upgrade properly (see
1477 the COMMON ITEMS: section later in this file).
1480 Auto-loading of ancillary wlan modules such as wlan_wep has
1481 been temporarily disabled; you need to statically configure
1482 the modules you need into your kernel or explicitly load them
1483 prior to use. Specifically, if you intend to use WEP encryption
1484 with an 802.11 device load/configure wlan_wep; if you want to
1485 use WPA with the ath driver load/configure wlan_tkip, wlan_ccmp,
1486 and wlan_xauth as required.
1489 The behaviour of ppp(8) has changed slightly. If lqr is enabled
1490 (``enable lqr''), older versions would revert to LCP ECHO mode on
1491 negotiation failure. Now, ``enable echo'' is required for this
1492 behaviour. The ppp version number has been bumped to 3.4.2 to
1496 The wlan support has been updated to split the crypto support
1497 into separate modules. For static WEP you must configure the
1498 wlan_wep module in your system or build and install the module
1499 in place where it can be loaded (the kernel will auto-load
1500 the module when a wep key is configured).
1503 The ath driver has been updated to split the tx rate control
1504 algorithm into a separate module. You need to include either
1505 ath_rate_onoe or ath_rate_amrr when configuring the kernel.
1508 Support for systems with an 80386 CPU has been removed. Please
1509 use FreeBSD 5.x or earlier on systems with an 80386.
1512 We have had a hack which would mount the root filesystem
1513 R/W if the device were named 'md*'. As part of the vnode
1514 work I'm doing I have had to remove this hack. People
1515 building systems which use preloaded MD root filesystems
1516 may need to insert a "/sbin/mount -u -o rw /dev/md0 /" in
1517 their /etc/rc scripts.
1520 FreeBSD 5.3 shipped here.
1523 The size of struct tcpcb has changed again due to the removal
1524 of RFC1644 T/TCP. You have to recompile userland programs that
1525 read kmem for tcp sockets directly (netstat, sockstat, etc.)
1528 The size of struct tcpcb has changed. You have to recompile
1529 userland programs that read kmem for tcp sockets directly
1530 (netstat, sockstat, etc.)
1533 RELENG_5 branched here. For older entries, please see updating
1534 in the RELENG_5 branch.
1540 Avoid using make -j when upgrading. From time to time in the
1541 past there have been problems using -j with buildworld and/or
1542 installworld. This is especially true when upgrading between
1543 "distant" versions (eg one that cross a major release boundary
1544 or several minor releases, or when several months have passed
1545 on the -current branch).
1547 Sometimes, obscure build problems are the result of environment
1548 poisoning. This can happen because the make utility reads its
1549 environment when searching for values for global variables.
1550 To run your build attempts in an "environmental clean room",
1551 prefix all make commands with 'env -i '. See the env(1) manual
1552 page for more details.
1554 When upgrading from one major version to another it is generally
1555 best to upgrade to the latest code in the currently installed branch
1556 first, then do an upgrade to the new branch. This is the best-tested
1557 upgrade path, and has the highest probability of being successful.
1558 Please try this approach before reporting problems with a major
1563 If you are updating from a prior version of FreeBSD (even one just
1564 a few days old), you should follow this procedure. It is the most
1565 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
1567 make kernel-toolchain
1568 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE
1569 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE
1571 To test a kernel once
1572 ---------------------
1573 If you just want to boot a kernel once (because you are not sure
1574 if it works, or if you want to boot a known bad kernel to provide
1575 debugging information) run
1576 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
1577 nextboot -k testkernel
1579 To just build a kernel when you know that it won't mess you up
1580 --------------------------------------------------------------
1581 This assumes you are already running a 5.X system. Replace
1582 ${arch} with the architecture of your machine (e.g. "i386",
1583 "alpha", "amd64", "ia64", "pc98", "sparc64", etc).
1585 cd src/sys/${arch}/conf
1586 config KERNEL_NAME_HERE
1587 cd ../compile/KERNEL_NAME_HERE
1592 If this fails, go to the "To build a kernel" section.
1594 To rebuild everything and install it on the current system.
1595 -----------------------------------------------------------
1596 # Note: sometimes if you are running current you gotta do more than
1597 # is listed here if you are upgrading from a really old current.
1599 <make sure you have good level 0 dumps>
1601 make kernel KERNCONF=YOUR_KERNEL_HERE
1603 <reboot in single user> [3]
1611 To cross-install current onto a separate partition
1612 --------------------------------------------------
1613 # In this approach we use a separate partition to hold
1614 # current's root, 'usr', and 'var' directories. A partition
1615 # holding "/", "/usr" and "/var" should be about 2GB in
1618 <make sure you have good level 0 dumps>
1621 make buildkernel KERNCONF=YOUR_KERNEL_HERE
1622 <maybe newfs current's root partition>
1623 <mount current's root partition on directory ${CURRENT_ROOT}>
1624 make installworld DESTDIR=${CURRENT_ROOT}
1625 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
1626 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT}
1627 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd
1628 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
1629 <reboot into current>
1630 <do a "native" rebuild/install as described in the previous section>
1631 <maybe install compatibility libraries from ports/misc/compat*>
1635 To upgrade in-place from 5.x-stable to current
1636 ----------------------------------------------
1637 <make sure you have good level 0 dumps>
1639 make kernel KERNCONF=YOUR_KERNEL_HERE [8]
1641 <reboot in single user> [3]
1648 Make sure that you've read the UPDATING file to understand the
1649 tweaks to various things you need. At this point in the life
1650 cycle of current, things change often and you are on your own
1651 to cope. The defaults can also change, so please read ALL of
1652 the UPDATING entries.
1654 Also, if you are tracking -current, you must be subscribed to
1655 freebsd-current@freebsd.org. Make sure that before you update
1656 your sources that you have read and understood all the recent
1657 messages there. If in doubt, please track -stable which has
1658 much fewer pitfalls.
1660 [1] If you have third party modules, such as vmware, you
1661 should disable them at this point so they don't crash your
1664 [3] From the bootblocks, boot -s, and then do
1669 adjkerntz -i # if CMOS is wall time
1670 Also, when doing a major release upgrade, it is required that
1671 you boot into single user mode to do the installworld.
1673 [4] Note: This step is non-optional. Failure to do this step
1674 can result in a significant reduction in the functionality of the
1675 system. Attempting to do it by hand is not recommended and those
1676 that pursue this avenue should read this file carefully, as well
1677 as the archives of freebsd-current and freebsd-hackers mailing lists
1678 for potential gotchas.
1680 [5] Usually this step is a noop. However, from time to time
1681 you may need to do this if you get unknown user in the following
1682 step. It never hurts to do it all the time. You may need to
1683 install a new mergemaster (cd src/usr.sbin/mergemaster && make
1684 install) after the buildworld before this step if you last updated
1685 from current before 20020224 or from -stable before 20020408.
1687 [8] In order to have a kernel that can run the 4.x binaries
1688 needed to do an installworld, you must include the COMPAT_FREEBSD4
1689 option in your kernel. Failure to do so may leave you with a system
1690 that is hard to boot to recover. A similar kernel option COMPAT_FREEBSD5
1691 is required to run the 5.x binaries on more recent kernels.
1693 Make sure that you merge any new devices from GENERIC since the
1694 last time you updated your kernel config file.
1696 [9] When checking out sources, you must include the -P flag to have
1697 cvs prune empty directories.
1699 If CPUTYPE is defined in your /etc/make.conf, make sure to use the
1700 "?=" instead of the "=" assignment operator, so that buildworld can
1701 override the CPUTYPE if it needs to.
1703 MAKEOBJDIRPREFIX must be defined in an environment variable, and
1704 not on the command line, or in /etc/make.conf. buildworld will
1705 warn if it is improperly defined.
1708 This file contains a list, in reverse chronological order, of major
1709 breakages in tracking -current. Not all things will be listed here,
1710 and it only starts on October 16, 2004. Updating files can found in
1711 previous releases if your system is older than this.
1713 Copyright information:
1715 Copyright 1998-2005 M. Warner Losh. All Rights Reserved.
1717 Redistribution, publication, translation and use, with or without
1718 modification, in full or in part, in any form or format of this
1719 document are permitted without further permission from the author.
1721 THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR
1722 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
1723 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
1724 DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT,
1725 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
1726 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
1727 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1728 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
1729 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
1730 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1731 POSSIBILITY OF SUCH DAMAGE.
1733 If you find this document useful, and you want to, you may buy the
1736 Contact Warner Losh if you have any questions about your use of