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.
19 Introduce the kernel thread "deadlock resolver" (which can be enabled
20 via the DEADLKRES option, see NOTES for more details) and the
21 sleepq_type() function for sleepqueues.
24 802.11s D3.03 support was committed. This is incompatible with
25 the previous code, which was based on D3.0.
28 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for
29 mount(8) and -a option for df(1) to see them.
32 Remove the option STOP_NMI. The default action is now to use NMI
33 only for KDB via the newly introduced function stop_cpus_hard()
34 and maintain stop_cpus() to just use a normal IPI_STOP on ia32
41 Bump the shared library version numbers for all libraries that
42 do not use symbol versioning as part of the 8.0-RELEASE cycle.
43 Bump __FreeBSD_version to 800105.
46 Due to changes in the implementation of virtual network stack
47 support, all network-related kernel modules must be recompiled.
48 As this change breaks the ABI, bump __FreeBSD_version to 800104.
51 The TOE interface to the TCP syncache has been modified to remove struct
52 tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. The
53 cxgb driver is the only TOE consumer affected by this change, and needs
54 to be recompiled along with the kernel. As this change breaks the ABI,
55 bump __FreeBSD_version to 800103.
58 Padding has been added to struct tcpcb, sackhint and tcpstat in
59 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst
60 maintainig the ABI. However, this change breaks the ABI, so bump
61 __FreeBSD_version to 800102. User space tools that rely on the size of
62 any of these structs (e.g. sockstat) need to be recompiled.
65 The NFS_LEGACYRPC option has been removed along with the old
66 kernel RPC implementation that this option selected. Kernel
67 configurations may need to be adjusted.
70 The network interface device nodes at /dev/net/<interface> have
71 been removed. All ioctl operations can be performed the normal
72 way using routing sockets. The kqueue functionality can
73 generally be replaced with routing sockets.
76 The documentation from the FreeBSD Documentation Project
77 (Handbook, FAQ, etc.) is now installed via packages by
78 sysinstall(8) and under the /usr/local/share/doc/freebsd
79 directory instead of /usr/share/doc.
82 The ABI of various structures related to the SYSV IPC API have
83 been changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43
84 kernel options now all require COMPAT_FREEBSD7.
85 Bump __FreeBSD_version to 800100.
88 Layout of struct vnet has changed as routing related variables
89 were moved to their own Vimage module. Modules need to be
90 recompiled. Bump __FreeBSD_version to 800099.
93 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023
94 and 1024 respectively. As long as no more than 16 groups per
95 process are used, no changes should be visible. When more
96 than 16 groups are used, old binaries may fail if they call
97 getgroups() or getgrouplist() with statically sized storage.
98 Recompiling will work around this, but applications should be
99 modified to use dynamically allocated storage for group arrays
100 as POSIX.1-2008 does not cap an implementation's number of
101 supported groups at NGROUPS_MAX+1 as previous versions did.
103 NFS and portalfs mounts may also be affected as the list of
104 groups is truncated to 16. Users of NFS who use more than 16
105 groups, should take care that negative group permissions are not
106 used on the exported file systems as they will not be reliable
107 unless a GSSAPI based authentication method is used.
110 The compiling option ADAPTIVE_LOCKMGRS has been introduced.
111 This option compiles in the support for adaptive spinning for lockmgrs
112 which want to enable it. The lockinit() function now accepts the
113 flag LK_ADAPTIVE in order to make the lock object subject to
114 adaptive spinning when both held in write and read mode.
117 The layout of the structure returned by IEEE80211_IOC_STA_INFO
118 has changed. User applications that use this ioctl need to be
122 The layout of struct thread has changed. Kernel and modules
126 The layout of structs ifnet, domain, protosw and vnet_net has
127 changed. Kernel modules need to be rebuilt.
128 Bump __FreeBSD_version to 800097.
131 window(1) has been removed from the base system. It can now be
132 installed from ports. The port is called misc/window.
135 The way we are storing and accessing `routing table' entries
136 has changed. Programs reading the FIB, like netstat, need to
140 A new netisr implementation has been added for FreeBSD 8. Network
141 file system modules, such as igmp, ipdivert, and others, should be
143 Bump __FreeBSD_version to 800096.
146 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose
150 Add VOP_ACCESSX(9). File system modules need to be rebuilt.
151 Bump __FreeBSD_version to 800094.
154 Add mnt_xflag field to 'struct mount'. File system modules
156 Bump __FreeBSD_version to 800093.
159 The compiling option ADAPTIVE_SX has been retired while it has been
160 introduced the option NO_ADAPTIVE_SX which handles the reversed logic.
161 The KPI for sx_init_flags() changes as accepting flags:
162 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag
163 has been introduced in order to handle the reversed logic.
164 Bump __FreeBSD_version to 800092.
167 Add support for hierarchical jails. Remove global securelevel.
168 Bump __FreeBSD_version to 800091.
171 The layout of struct vnet_net has changed, therefore modules
173 Bump __FreeBSD_version to 800090.
176 The newly imported zic(8) produces a new format in the
177 output. Please run tzsetup(8) to install the newly created
178 data to /etc/localtime.
181 The sysctl tree for the usb stack has renamed from hw.usb2.* to
182 hw.usb.* and is now consistent again with previous releases.
185 802.11 monitor mode support was revised and driver api's
186 were changed. Drivers dependent on net80211 now support
187 DLT_IEEE802_11_RADIO instead of DLT_IEEE802_11. No
188 user-visible data structures were changed but applications
189 that use DLT_IEEE802_11 may require changes.
190 Bump __FreeBSD_version to 800088.
193 The layout of the following structs has changed: sysctl_oid,
194 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet,
195 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or
196 panics may be experienced. World rebuild is required for
197 correctly checking networking state from userland.
198 Bump __FreeBSD_version to 800085.
201 MLDv2 and Source-Specific Multicast (SSM) have been merged
202 to the IPv6 stack. VIMAGE hooks are in but not yet used.
203 The implementation of SSM within FreeBSD's IPv6 stack closely
204 follows the IPv4 implementation.
206 For kernel developers:
208 * The most important changes are that the ip6_output() and
209 ip6_input() paths no longer take the IN6_MULTI_LOCK,
210 and this lock has been downgraded to a non-recursive mutex.
212 * As with the changes to the IPv4 stack to support SSM, filtering
213 of inbound multicast traffic must now be performed by transport
214 protocols within the IPv6 stack. This does not apply to TCP and
215 SCTP, however, it does apply to UDP in IPv6 and raw IPv6.
217 * The KPIs used by IPv6 multicast are similar to those used by
218 the IPv4 stack, with the following differences:
219 * im6o_mc_filter() is analogous to imo_multicast_filter().
220 * The legacy KAME entry points in6_joingroup and in6_leavegroup()
221 are shimmed to in6_mc_join() and in6_mc_leave() respectively.
222 * IN6_LOOKUP_MULTI() has been deprecated and removed.
223 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs
224 for MLDv1 have an additional 'timer' argument which is used to
225 jitter the initial membership report for the solicited-node
226 multicast membership on-link.
227 * This is not strictly needed for MLDv2, which already jitters
228 its report transmissions. However, the 'timer' argument is
229 preserved in case MLDv1 is active on the interface.
231 * The KAME linked-list based IPv6 membership implementation has
232 been refactored to use a vector similar to that used by the IPv4
234 Code which maintains a list of its own multicast memberships
235 internally, e.g. carp, has been updated to reflect the new
238 * There is a known Lock Order Reversal (LOR) due to in6_setscope()
239 acquiring the IF_AFDATA_LOCK and being called within ip6_output().
240 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an
241 implementation constraint which needs to be addressed in HEAD.
243 For application developers:
245 * The changes are broadly similar to those made for the IPv4
248 * The use of IPv4 and IPv6 multicast socket options on the same
249 socket, using mapped addresses, HAS NOT been tested or supported.
251 * There are a number of issues with the implementation of various
252 IPv6 multicast APIs which need to be resolved in the API surface
253 before the implementation is fully compatible with KAME userland
254 use, and these are mostly to do with interface index treatment.
256 * The literature available discusses the use of either the delta / ASM
257 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API
258 using setsourcefilter(3)/getsourcefilter(3). For more information
259 please refer to RFC 3768, 'Socket Interface Extensions for
260 Multicast Source Filters'.
262 * Applications which use the published RFC 3678 APIs should be fine.
264 For systems administrators:
266 * The mtest(8) utility has been refactored to support IPv6, in
267 addition to IPv4. Interface addresses are no longer accepted
268 as arguments, their names must be used instead. The utility
269 will map the interface name to its first IPv4 address as
270 returned by getifaddrs(3).
272 * The ifmcstat(8) utility has also been updated to print the MLDv2
273 endpoint state and source filter lists via sysctl(3).
275 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable
276 loopback of IPv6 multicast datagrams by default; it defaults to 1
277 to preserve the existing behaviour. Disabling multicast loopback is
278 recommended for optimal system performance.
280 * The IPv6 MROUTING code has been changed to examine this sysctl
281 instead of attempting to perform a group lookup before looping
282 back forwarded datagrams.
284 Bump __FreeBSD_version to 800084.
287 Implement low-level Bluetooth HCI API.
288 Bump __FreeBSD_version to 800083.
291 The layout of struct malloc_type, used by modules to register new
292 memory allocation types, has changed. Most modules will need to
293 be rebuilt or panics may be experienced.
294 Bump __FreeBSD_version to 800081.
297 Anticipate overflowing inp_flags - add inp_flags2.
298 This changes most offsets in inpcb, so checking v4 connection
299 state will require a world rebuild.
300 Bump __FreeBSD_version to 800080.
303 Add an llentry to struct route and struct route_in6. Modules
304 embedding a struct route will need to be recompiled.
305 Bump __FreeBSD_version to 800079.
308 The size of rt_metrics_lite and by extension rtentry has changed.
309 Networking administration apps will need to be recompiled.
310 The route command now supports show as an alias for get, weighting
311 of routes, sticky and nostick flags to alter the behavior of stateful
313 Bump __FreeBSD_version to 800078.
316 Do not use Giant for kbdmux(4) locking. This is wrong and
317 apparently causing more problems than it solves. This will
318 re-open the issue where interrupt handlers may race with
319 kbdmux(4) in polling mode. Typical symptoms include (but
320 not limited to) duplicated and/or missing characters when
321 low level console functions (such as gets) are used while
322 interrupts are enabled (for example geli password prompt,
323 mountroot prompt etc.). Disabling kbdmux(4) may help.
326 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed;
327 kernel modules referencing any of the above need to be recompiled.
328 Bump __FreeBSD_version to 800075.
331 GEOM_PART has become the default partition slicer for storage devices,
332 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It
333 introduces some changes:
335 MSDOS/EBR: the devices created from MSDOS extended partition entries
336 (EBR) can be named differently than with GEOM_MBR and are now symlinks
337 to devices with offset-based names. fstabs may need to be modified.
339 BSD: the "geometry does not match label" warning is harmless in most
340 cases but it points to problems in file system misalignment with
341 disk geometry. The "c" partition is now implicit, covers the whole
342 top-level drive and cannot be (mis)used by users.
344 General: Kernel dumps are now not allowed to be written to devices
345 whose partition types indicate they are meant to be used for file
346 systems (or, in case of MSDOS partitions, as something else than
349 Most of these changes date approximately from 200812.
352 The uscanner(4) driver has been removed from the kernel. This follows
353 Linux removing theirs in 2.6 and making libusb the default interface
357 The multicast forwarding code has been cleaned up. netstat(1)
358 only relies on KVM now for printing bandwidth upcall meters.
359 The IPv4 and IPv6 modules are split into ip_mroute_mod and
360 ip6_mroute_mod respectively. The config(5) options for statically
361 compiling this code remain the same, i.e. 'options MROUTING'.
364 Support for the IFF_NEEDSGIANT network interface flag has been
365 removed, which means that non-MPSAFE network device drivers are no
366 longer supported. In particular, if_ar, if_sr, and network device
367 drivers from the old (legacy) USB stack can no longer be built or
371 POSIX.1 Native Language Support (NLS) has been enabled in libc and
372 a bunch of new language catalog files have also been added.
373 This means that some common libc messages are now localized and
374 they depend on the LC_MESSAGES environmental variable.
377 The k8temp(4) driver has been renamed to amdtemp(4) since
378 support for K10 and K11 CPU families was added.
381 IGMPv3 and Source-Specific Multicast (SSM) have been merged
382 to the IPv4 stack. VIMAGE hooks are in but not yet used.
384 For kernel developers, the most important changes are that the
385 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(),
386 and this lock has been downgraded to a non-recursive mutex.
388 Transport protocols (UDP, Raw IP) are now responsible for filtering
389 inbound multicast traffic according to group membership and source
390 filters. The imo_multicast_filter() KPI exists for this purpose.
391 Transports which do not use multicast (SCTP, TCP) already reject
392 multicast by default. Forwarding and receive performance may improve
393 as a mutex acquisition is no longer needed in the ip_input()
394 low-level input path. in_addmulti() and in_delmulti() are shimmed
395 to new KPIs which exist to support SSM in-kernel.
397 For application developers, it is recommended that loopback of
398 multicast datagrams be disabled for best performance, as this
399 will still cause the lock to be taken for each looped-back
400 datagram transmission. The net.inet.ip.mcast.loop sysctl may
401 be tuned to 0 to disable loopback by default; it defaults to 1
402 to preserve the existing behaviour.
404 For systems administrators, to obtain best performance with
405 multicast reception and multiple groups, it is always recommended
406 that a card with a suitably precise hash filter is used. Hash
407 collisions will still result in the lock being taken within the
408 transport protocol input path to check group membership.
410 If deploying FreeBSD in an environment with IGMP snooping switches,
411 it is recommended that the net.inet.igmp.sendlocal sysctl remain
412 enabled; this forces 224.0.0.0/24 group membership to be announced
415 The size of 'struct igmpstat' has changed; netstat needs to be
416 recompiled to reflect this.
417 Bump __FreeBSD_version to 800070.
420 libusb20.so.1 is now installed as libusb.so.1 and the ports system
421 updated to use it. This requires a buildworld/installworld in order to
422 update the library and dependencies (usbconfig, etc). Its advisable to
423 rebuild all ports which uses libusb. More specific directions are given
424 in the ports collection UPDATING file. Any /etc/libmap.conf entries for
425 libusb are no longer required and can be removed.
428 A workaround is committed to allow the creation of System V shared
429 memory segment of size > 2 GB on the 64-bit architectures.
430 Due to a limitation of the existing ABI, the shm_segsz member
431 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is
432 wrong for large segments. Note that limits must be explicitly
433 raised to allow such segments to be created.
436 The layout of struct ifnet has changed, requiring a rebuild of all
437 network device driver modules.
440 The /dev handling for the new USB stack has changed, a
441 buildworld/installworld is required for libusb20.
444 The new USB2 stack has now been permanently moved in and all kernel and
445 module names reverted to their previous values (eg, usb, ehci, ohci,
446 ums, ...). The old usb stack can be compiled in by prefixing the name
447 with the letter 'o', the old usb modules have been removed.
448 Updating entry 20090216 for xorg and 20090215 for libmap may still
452 The rc.conf(5) option if_up_delay has been renamed to
453 defaultroute_delay to better reflect its purpose. If you have
454 customized this setting in /etc/rc.conf you need to update it to
458 xorg 7.4 wants to configure its input devices via hald which does not
459 yet work with USB2. If the keyboard/mouse does not work in xorg then
461 Option "AllowEmptyInput" "off"
462 to your ServerLayout section. This will cause X to use the configured
463 kbd and mouse sections from your xorg.conf.
466 The GENERIC kernels for all architectures now default to the new USB2
467 stack. No kernel config options or code have been removed so if a
468 problem arises please report it and optionally revert to the old USB
469 stack. If you are loading USB kernel modules or have a custom kernel
470 that includes GENERIC then ensure that usb names are also changed over,
471 eg uftdi -> usb2_serial_ftdi.
473 Older programs linked against the ports libusb 0.1 need to be
474 redirected to the new stack's libusb20. /etc/libmap.conf can
476 # Map old usb library to new one for usb2 stack
477 libusb-0.1.so.8 libusb20.so.1
480 All USB ethernet devices now attach as interfaces under the name ueN
481 (eg. ue0). This is to provide a predictable name as vendors often
482 change usb chipsets in a product without notice.
485 The ichsmb(4) driver has been changed to require SMBus slave
486 addresses be left-justified (xxxxxxx0b) rather than right-justified.
487 All of the other SMBus controller drivers require left-justified
488 slave addresses, so this change makes all the drivers provide the
492 INET6 statistics (struct ip6stat) was updated.
493 netstat(1) needs to be recompiled.
496 NTFS has been removed from GENERIC kernel on amd64 to match
497 GENERIC on i386. Should not cause any issues since mount_ntfs(8)
498 will load ntfs.ko module automatically when NTFS support is
499 actually needed, unless ntfs.ko is not installed or security
500 level prohibits loading kernel modules. If either is the case,
501 "options NTFS" has to be added into kernel config.
504 TCP Appropriate Byte Counting (RFC 3465) support added to kernel.
505 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to
506 800061. User space tools that rely on the size of struct tcpcb in
507 tcp_var.h (e.g. sockstat) need to be recompiled.
510 ng_tty(4) module updated to match the new TTY subsystem.
511 Due to API change, user-level applications must be updated.
512 New API support added to mpd5 CVS and expected to be present
513 in next mpd5.3 release.
516 With __FreeBSD_version 800060 the makefs tool is part of
517 the base system (it was a port).
520 The afdata and ifnet locks have been changed from mutexes to
521 rwlocks, network modules will need to be re-compiled.
524 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite.
525 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated.
526 The new code reduced struct rtentry{} by 16 bytes on 32-bit
527 architecture and 40 bytes on 64-bit architecture. The userland
528 applications "arp" and "ndp" have been updated accordingly.
529 The output from "netstat -r" shows only routing entries and
530 none of the L2 information.
533 __FreeBSD_version 800057 marks the switchover from the
534 binary ath hal to source code. Users must add the line:
536 options AH_SUPPORT_AR5416
538 to their kernel config files when specifying:
542 The ath_hal module no longer exists; the code is now compiled
543 together with the driver in the ath module. It is now
544 possible to tailor chip support (i.e. reduce the set of chips
545 and thereby the code size); consult ath_hal(4) for details.
548 __FreeBSD_version 800054 adds memory barriers to
549 <machine/atomic.h>, new interfaces to ifnet to facilitate
550 multiple hardware transmit queues for cards that support
551 them, and a lock-less ring-buffer implementation to
552 enable drivers to more efficiently manage queueing of
556 A new version of ZFS (version 13) has been merged to -HEAD.
557 This version has zpool attribute "listsnapshots" off by
558 default, which means "zfs list" does not show snapshots,
559 and is the same as Solaris behavior.
562 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled.
565 The uhci, ohci, ehci and slhci USB Host controller drivers have
566 been put into separate modules. If you load the usb module
567 separately through loader.conf you will need to load the
568 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0
569 controller add the following to loader.conf:
575 The ABI used by the PMC toolset has changed. Please keep
576 userland (libpmc(3)) and the kernel module (hwpmc(4)) in
580 atapci kernel module now includes only generic PCI ATA
581 driver. AHCI driver moved to ataahci kernel module.
582 All vendor-specific code moved into separate kernel modules:
583 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek,
584 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron,
585 atamarvell, atamicron, atanational, atanetcell, atanvidia,
586 atapromise, ataserverworks, atasiliconimage, atasis, atavia
589 The TTY subsystem of the kernel has been replaced by a new
590 implementation, which provides better scalability and an
591 improved driver model. Most common drivers have been migrated to
592 the new TTY subsystem, while others have not. The following
593 drivers have not yet been ported to the new TTY layer:
596 cy, digi, rc, rp, sio
602 ng_h4, ng_tty, ppp, sl, snp
604 Adding these drivers to your kernel configuration file shall
605 cause compilation to fail.
608 ntpd has been upgraded to 4.2.4p5.
611 OpenSSH has been upgraded to 5.1p1.
613 For many years, FreeBSD's version of OpenSSH preferred DSA
614 over RSA for host and user authentication keys. With this
615 upgrade, we've switched to the vendor's default of RSA over
616 DSA. This may cause upgraded clients to warn about unknown
617 host keys even for previously known hosts. Users should
618 follow the usual procedure for verifying host keys before
619 accepting the RSA key.
621 This can be circumvented by setting the "HostKeyAlgorithms"
622 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh
625 Please note that the sequence of keys offered for
626 authentication has been changed as well. You may want to
627 specify IdentityFile in a different order to revert this
631 The sio(4) driver has been removed from the i386 and amd64
632 kernel configuration files. This means uart(4) is now the
633 default serial port driver on those platforms as well.
635 To prevent collisions with the sio(4) driver, the uart(4) driver
636 uses different names for its device nodes. This means the
637 onboard serial port will now most likely be called "ttyu0"
638 instead of "ttyd0". You may need to reconfigure applications to
639 use the new device names.
641 When using the serial port as a boot console, be sure to update
642 /boot/device.hints and /etc/ttys before booting the new kernel.
643 If you forget to do so, you can still manually specify the hints
644 at the loader prompt:
646 set hint.uart.0.at="isa"
647 set hint.uart.0.port="0x3F8"
648 set hint.uart.0.flags="0x10"
649 set hint.uart.0.irq="4"
653 The gpt(8) utility has been removed. Use gpart(8) to partition
657 The version that Linuxulator emulates was changed from 2.4.2
658 to 2.6.16. If you experience any problems with Linux binaries
659 please try to set sysctl compat.linux.osrelease to 2.4.2 and
660 if it fixes the problem contact emulation mailing list.
663 ISDN4BSD (I4B) was removed from the src tree. You may need to
664 update a your kernel configuration and remove relevant entries.
667 I have checked in code to support multiple routing tables.
668 See the man pages setfib(1) and setfib(2).
669 This is a hopefully backwards compatible version,
670 but to make use of it you need to compile your kernel
671 with options ROUTETABLES=2 (or more up to 16).
674 The 802.11 wireless support was redone to enable multi-bss
675 operation on devices that are capable. The underlying device
676 is no longer used directly but instead wlanX devices are
677 cloned with ifconfig. This requires changes to rc.conf files.
679 ifconfig_ath0="WPA DHCP"
682 ifconfig_wlan0="WPA DHCP"
683 see rc.conf(5) for more details. In addition, mergemaster of
684 /etc/rc.d is highly recommended. Simultaneous update of userland
685 and kernel wouldn't hurt either.
687 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta
688 modules were merged into the base wlan module. All references
689 to these modules (e.g. in kernel config files) must be removed.
692 psm(4) has gained write(2) support in native operation level.
693 Arbitrary commands can be written to /dev/psm%d and status can
694 be read back from it. Therefore, an application is responsible
695 for status validation and error recovery. It is a no-op in
696 other operation levels.
699 Support for KSE threading has been removed from the kernel. To
700 run legacy applications linked against KSE libmap.conf may
701 be used. The following libmap.conf may be used to ensure
702 compatibility with any prior release:
704 libpthread.so.1 libthr.so.1
705 libpthread.so.2 libthr.so.2
706 libkse.so.3 libthr.so.3
709 The layout of struct vmspace has changed. This affects libkvm
710 and any executables that link against libkvm and use the
711 kvm_getprocs() function. In particular, but not exclusively,
712 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1).
713 The effects are minimal, but it's advisable to upgrade world
717 The latest em driver no longer has support in it for the
718 82575 adapter, this is now moved to the igb driver. The
719 split was done to make new features that are incompatible
720 with older hardware easier to do.
723 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4),
724 likewise the kernel option is now GEOM_LINUX_LVM.
727 The default NFS mount mode has changed from UDP to TCP for
728 increased reliability. If you rely on (insecurely) NFS
729 mounting across a firewall you may need to update your
733 Belatedly note the addition of m_collapse for compacting
737 The fts(3) structures have been changed to use adequate
738 integer types for their members and so to be able to cope
739 with huge file trees. The old fts(3) ABI is preserved
740 through symbol versioning in libc, so third-party binaries
741 using fts(3) should still work, although they will not take
742 advantage of the extended types. At the same time, some
743 third-party software might fail to build after this change
744 due to unportable assumptions made in its source code about
745 fts(3) structure members. Such software should be fixed
746 by its vendor or, in the worst case, in the ports tree.
747 FreeBSD_version 800015 marks this change for the unlikely
748 case that a portable fix is impossible.
751 To upgrade to -current after this date, you must be running
752 FreeBSD not older than 6.0-RELEASE. Upgrading to -current
753 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems.
756 The ADAPTIVE_GIANT kernel option has been retired because its
757 functionality is the default now.
760 The AT keyboard emulation of sunkbd(4) has been turned on
761 by default. In order to make the special symbols of the Sun
762 keyboards driven by sunkbd(4) work under X these now have
763 to be configured the same way as Sun USB keyboards driven
764 by ukbd(4) (which also does AT keyboard emulation), f.e.:
766 Option "XkbLayout" "us"
767 Option "XkbRules" "xorg"
768 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us"
771 It has been decided that it is desirable to provide ABI
772 backwards compatibility to the FreeBSD 4/5/6 versions of the
773 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was
774 broken with the introduction of PCI domain support (see the
775 20070930 entry). Unfortunately, this required the ABI of
776 PCIOCGETCONF to be broken again in order to be able to
777 provide backwards compatibility to the old version of that
778 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled
779 again. As for prominent ports this affects neither pciutils
780 nor xorg-server this time, the hal port needs to be rebuilt
784 The misnamed kthread_create() and friends have been renamed
785 to kproc_create() etc. Many of the callers already
787 I will return kthread_create() and friends in a while
788 with implementations that actually create threads, not procs.
789 Renaming corresponds with version 800002.
795 Setting WITHOUT_LIBPTHREAD now means WITHOUT_LIBKSE and
796 WITHOUT_LIBTHR are set.
799 The PCI code has been made aware of PCI domains. This means that
800 the location strings as used by pciconf(8) etc are now in the
801 following format: pci<domain>:<bus>:<device>[:<function>]. It
802 also means that consumers of <sys/pciio.h> potentially need to
803 be recompiled; this includes the hal and xorg-server ports.
806 The caching daemon (cached) was renamed to nscd. nscd.conf
807 configuration file should be used instead of cached.conf and
808 nscd_enable, nscd_pidfile and nscd_flags options should be used
809 instead of cached_enable, cached_pidfile and cached_flags in
813 The getfacl(1) utility now prints owning user and group name
814 instead of owning uid and gid in the three line comment header.
815 This is the same behavior as getfacl(1) on Solaris and Linux.
818 The new IPsec code is now compiled in using the IPSEC option. The
819 IPSEC option now requires "device crypto" be defined in your kernel
820 configuration. The FAST_IPSEC kernel option is now deprecated.
823 The packet filter (pf) code has been updated to OpenBSD 4.1 Please
824 note the changed syntax - keep state is now on by default. Also
825 note the fact that ftp-proxy(8) has been changed from bottom up and
826 has been moved from libexec to usr/sbin. Changes in the ALTQ
827 handling also affect users of IPFW's ALTQ capabilities.
830 Remove KAME IPsec in favor of FAST_IPSEC, which is now the
831 only IPsec supported by FreeBSD. The new IPsec stack
832 supports both IPv4 and IPv6. The kernel option will change
833 after the code changes have settled in. For now the kernel
834 option IPSEC is deprecated and FAST_IPSEC is the only option, that
835 will change after some settling time.
838 The wicontrol(8) utility has been removed from the base system. wi(4)
839 cards should be configured using ifconfig(8), see the man page for more
843 The i386/amd64 GENERIC kernel now defaults to the nfe(4) driver
844 instead of the nve(4) driver. Please update your configuration
848 By default, /etc/rc.d/sendmail no longer rebuilds the aliases
849 database if it is missing or older than the aliases file. If
850 desired, set the new rc.conf option sendmail_rebuild_aliases
851 to "YES" to restore that functionality.
854 The IPv4 multicast socket code has been considerably modified, and
855 moved to the file sys/netinet/in_mcast.c. Initial support for the
856 RFC 3678 Source-Specific Multicast Socket API has been added to
857 the IPv4 network stack.
859 Strict multicast and broadcast reception is now the default for
860 UDP/IPv4 sockets; the net.inet.udp.strict_mcast_mship sysctl variable
861 has now been removed.
863 The RFC 1724 hack for interface selection has been removed; the use
864 of the Linux-derived ip_mreqn structure with IP_MULTICAST_IF has
865 been added to replace it. Consumers such as routed will soon be
866 updated to reflect this.
868 These changes affect users who are running routed(8) or rdisc(8)
869 from the FreeBSD base system on point-to-point or unnumbered
873 The net80211 layer has changed significantly and all wireless
874 drivers that depend on it need to be recompiled. Further these
875 changes require that any program that interacts with the wireless
876 support in the kernel be recompiled; this includes: ifconfig,
877 wpa_supplicant, hostapd, and wlanstats. Users must also, for
878 the moment, kldload the wlan_scan_sta and/or wlan_scan_ap modules
879 if they use modules for wireless support. These modules implement
880 scanning support for station and ap modes, respectively. Failure
881 to load the appropriate module before marking a wireless interface
882 up will result in a message to the console and the device not
886 The pam_nologin(8) module ceases to provide an authentication
887 function and starts providing an account management function.
888 Consequent changes to /etc/pam.d should be brought in using
889 mergemaster(8). Third-party files in /usr/local/etc/pam.d may
890 need manual editing as follows. Locate this line (or similar):
892 auth required pam_nologin.so no_warn
894 and change it according to this example:
896 account required pam_nologin.so no_warn
898 That is, the first word needs to be changed from "auth" to
899 "account". The new line can be moved to the account section
900 within the file for clarity. Not updating pam.conf(5) files
901 will result in nologin(5) ignored by the respective services.
904 The ether_ioctl() function has been synchronized with ioctl(2)
905 and ifnet.if_ioctl. Due to that, the size of one of its arguments
906 has changed on 64-bit architectures. All kernel modules using
907 ether_ioctl() need to be rebuilt on such architectures.
910 Improved INCLUDE_CONFIG_FILE support has been introduced to the
911 config(8) utility. In order to take advantage of this new
912 functionality, you are expected to recompile and install
913 src/usr.sbin/config. If you don't rebuild config(8), and your
914 kernel configuration depends on INCLUDE_CONFIG_FILE, the kernel
915 build will be broken because of a missing "kernconfstring"
919 Symbol versioning is enabled by default. To disable it, use
920 option WITHOUT_SYMVER. It is not advisable to attempt to
921 disable symbol versioning once it is enabled; your installworld
922 will break because a symbol version-less libc will get installed
923 before the install tools. As a result, the old install tools,
924 which previously had symbol dependencies to FBSD_1.0, will fail
925 because the freshly installed libc will not have them.
927 The default threading library (providing "libpthread") has been
928 changed to libthr. If you wish to have libkse as your default,
929 use option DEFAULT_THREAD_LIB=libkse for the buildworld.
932 The ABI breakage in sendmail(8)'s libmilter has been repaired
933 so it is no longer necessary to recompile mail filters (aka,
934 milters). If you recompiled mail filters after the 20070408
935 note, it is not necessary to recompile them again.
938 The new trunk(4) driver has been renamed to lagg(4) as it better
939 reflects its purpose. ifconfig will need to be recompiled.
942 sendmail(8) has been updated to version 8.14.1. Mail filters
943 (aka, milters) compiled against the libmilter included in the
944 base operating system should be recompiled.
947 Firmwares for ipw(4) and iwi(4) are now included in the base tree.
948 In order to use them one must agree to the respective LICENSE in
949 share/doc/legal and define legal.intel_<name>.license_ack=1 via
950 loader.conf(5) or kenv(1). Make sure to deinstall the now
951 deprecated modules from the respective firmware ports.
954 The name resolution/mapping functions addr2ascii(3) and ascii2addr(3)
955 were removed from FreeBSD's libc. These originally came from INRIA
956 IPv6. Nothing in FreeBSD ever used them. They may be regarded as
957 deprecated in previous releases.
958 The AF_LINK support for getnameinfo(3) was merged from NetBSD to
959 replace it as a more portable (and re-entrant) API.
962 To support interrupt filtering a modification to the newbus API
963 has occurred, ABI was broken and __FreeBSD_version was bumped
964 to 700031. Please make sure that your kernel and modules are in
966 http://docs.freebsd.org/cgi/mid.cgi?20070221233124.GA13941
969 The IPv6 multicast forwarding code may now be loaded into GENERIC
970 kernels by loading the ip_mroute.ko module. This is built into the
971 module unless WITHOUT_INET6 or WITHOUT_INET6_SUPPORT options are
972 set; see src.conf(5) for more information.
975 The output of netstat -r has changed. Without -n, we now only
976 print a "network name" without the prefix length if the network
977 address and mask exactly match a Class A/B/C network, and an entry
978 exists in the nsswitch "networks" map.
979 With -n, we print the full unabbreviated CIDR network prefix in
980 the form "a.b.c.d/p". 0.0.0.0/0 is always printed as "default".
981 This change is in preparation for changes such as equal-cost
982 multipath, and to more generally assist operational deployment
983 of FreeBSD as a modern IPv4 router.
986 PIM has been turned on by default in the IPv4 multicast
987 routing code. The kernel option 'PIM' has now been removed.
988 PIM is now built by default if option 'MROUTING' is specified.
989 It may now be loaded into GENERIC kernels by loading the
993 Support for IPIP tunnels (VIFF_TUNNEL) in IPv4 multicast routing
994 has been removed. Its functionality may be achieved by explicitly
995 configuring gif(4) interfaces and using the 'phyint' keyword in
997 XORP does not support source-routed IPv4 multicast tunnels nor the
998 integrated IPIP tunneling, therefore it is not affected by this
999 change. The __FreeBSD_version macro has been bumped to 700030.
1002 Support for PCI Message Signalled Interrupts has been
1003 re-enabled in the bge driver, only for those chips which are
1004 believed to support it properly. If there are any problems,
1005 MSI can be disabled completely by setting the
1006 'hw.pci.enable_msi' and 'hw.pci.enable_msix' tunables to 0
1010 Support for PCI Message Signalled Interrupts has been
1011 disabled again in the bge driver. Many revisions of the
1012 hardware fail to support it properly. Support can be
1013 re-enabled by removing the #define of BGE_DISABLE_MSI in
1014 "src/sys/dev/bge/if_bge.c".
1017 Support for PCI Message Signalled Interrupts has been added
1018 to the bge driver. If there are any problems, MSI can be
1019 disabled completely by setting the 'hw.pci.enable_msi' and
1020 'hw.pci.enable_msix' tunables to 0 in the loader.
1023 The removal of several facets of the experimental Threading
1024 system from the kernel means that the proc and thread structures
1025 have changed quite a bit. I suggest all kernel modules that might
1026 reference these structures be recompiled.. Especially the
1030 Sound infrastructure has been updated with various fixes and
1031 improvements. Most of the changes are pretty much transparent,
1032 with exceptions of followings:
1033 1) All sound driver specific sysctls (hw.snd.pcm%d.*) have been
1034 moved to their own dev sysctl nodes, for example:
1035 hw.snd.pcm0.vchans -> dev.pcm.0.vchans
1036 2) /dev/dspr%d.%d has been deprecated. Each channel now has its
1037 own chardev in the form of "dsp%d.<function>%d", where <function>
1038 is p = playback, r = record and v = virtual, respectively. Users
1039 are encouraged to use these devs instead of (old) "/dev/dsp%d.%d".
1040 This does not affect those who are using "/dev/dsp".
1043 geom(4)'s gmirror(8) class metadata structure has been
1044 rev'd from v3 to v4. If you update across this point and
1045 your metadata is converted for you, you will not be easily
1046 able to downgrade since the /boot/kernel.old/geom_mirror.ko
1047 kernel module will be unable to read the v4 metadata. You
1048 can resolve this by doing from the loader(8) prompt:
1050 set vfs.root.mountfrom="ufs:/dev/XXX"
1052 where XXX is the root slice of one of the disks that composed
1053 the mirror (i.e.: /dev/ad0s1a). You can then rebuild
1054 the array the same way you built it originally.
1057 The following binaries have been disconnected from the build:
1058 mount_devfs, mount_ext2fs, mount_fdescfs, mount_procfs, mount_linprocfs,
1059 and mount_std. The functionality of these programs has been
1060 moved into the mount program. For example, to mount a devfs
1061 filesystem, instead of using mount_devfs, use: "mount -t devfs".
1062 This does not affect entries in /etc/fstab, since entries in
1063 /etc/fstab are always processed with "mount -t fstype".
1066 Support for PCI Message Signalled Interrupts on i386 and amd64
1067 has been added to the kernel and various drivers will soon be
1068 updated to use MSI when it is available. If there are any problems,
1069 MSI can be disabled completely by setting the 'hw.pci.enable_msi'
1070 and 'hw.pci.enable_msix' tunables to 0 in the loader.
1073 The MUTEX_PROFILING option has been renamed to LOCK_PROFILING.
1074 The lockmgr object layout has been changed as a result of having
1075 a lock_object embedded in it. As a consequence all file system
1076 kernel modules must be re-compiled. The mutex profiling man page
1077 has not yet been updated to reflect this change.
1080 KSE in the kernel has now been made optional and turned on by
1081 default. Use 'nooption KSE' in your kernel config to turn it
1082 off. All kernel modules *must* be recompiled after this change.
1083 There-after, modules from a KSE kernel should be compatible with
1084 modules from a NOKSE kernel due to the temporary padding fields
1085 added to 'struct proc'.
1088 mrouted and its utilities have been removed from the base system.
1091 Some ioctl(2) command codes have changed. Full backward ABI
1092 compatibility is provided if the "options COMPAT_FREEBSD6" is
1093 present in the kernel configuration file. Make sure to add
1094 this option to your kernel config file, or recompile X.Org
1095 and the rest of ports; otherwise they may refuse to work.
1098 tcpslice has been removed from the base system.
1101 The sizes of struct tcpcb (and struct xtcpcb) have changed due to
1102 the rewrite of TCP syncookies. Tools like netstat, sockstat, and
1103 systat needs to be rebuilt.
1106 libpcap updated to v0.9.4 and tcpdump to v3.9.4
1109 The IPFIREWALL_FORWARD_EXTENDED option is gone and the behaviour
1110 for IPFIREWALL_FORWARD is now as it was before when it was first
1111 committed and for years after. The behaviour is now ON.
1114 enigma(1)/crypt(1) utility has been changed on 64 bit architectures.
1115 Now it can decrypt files created from different architectures.
1116 Unfortunately, it is no longer able to decrypt a cipher text
1117 generated with an older version on 64 bit architectures.
1118 If you have such a file, you need old utility to decrypt it.
1121 The interface version of the i4b kernel part has changed. So
1122 after updating the kernel sources and compiling a new kernel,
1123 the i4b user space tools in "/usr/src/usr.sbin/i4b" must also
1124 be rebuilt, and vice versa.
1127 The XBOX kernel now defaults to the nfe(4) driver instead of
1128 the nve(4) driver. Please update your configuration
1132 The i386-only lnc(4) driver for the AMD Am7900 LANCE and Am79C9xx
1133 PCnet family of NICs has been removed. The new le(4) driver serves
1134 as an equivalent but cross-platform replacement with the pcn(4)
1135 driver still providing performance-optimized support for the subset
1136 of AMD Am79C971 PCnet-FAST and greater chips as before.
1139 The machdep.* sysctls and the adjkerntz utility have been
1140 modified a bit. The new adjkerntz utility uses the new
1141 sysctl names and sysctlbyname() calls, so it may be impossible
1142 to run an old /sbin/adjkerntz utility in single-user mode
1143 with a new kernel. Replace the `adjkerntz -i' step before
1144 `make installworld' with:
1146 /usr/obj/usr/src/sbin/adjkerntz/adjkerntz -i
1148 and proceed as usual with the rest of the installworld-stage
1149 steps. Otherwise, you risk installing binaries with their
1150 timestamp set several hours in the future, especially if
1151 you are running with local time set to GMT+X hours.
1154 The ip6fw utility has been removed. The behavior provided by
1155 ip6fw has been in ipfw2 for a good while and the rc.d scripts
1156 have been updated to deal with it. There are some rules that
1157 might not migrate cleanly. Use rc.firewall6 as a template to
1161 The puc(4) driver has been overhauled. The ebus(4) and sbus(4)
1162 attachments have been removed. Make sure to configure scc(4)
1163 on sparc64. Note also that by default puc(4) will use uart(4)
1164 and not sio(4) for serial ports because interrupt handling has
1165 been optimized for multi-port serial cards and only uart(4)
1166 implements the interface to support it.
1169 The scc(4) driver replaces puc(4) for Serial Communications
1170 Controllers (SCCs) like the Siemens SAB82532 and the Zilog
1171 Z8530. On sparc64, it is advised to add scc(4) to the kernel
1172 configuration to make sure that the serial ports remain
1176 Most world/kernel related NO_* build options changed names.
1177 New knobs have common prefixes WITHOUT_*/WITH_* (modelled
1178 after FreeBSD ports) and should be set in /etc/src.conf
1179 (the src.conf(5) manpage is provided). Full backwards
1180 compatibility is maintained for the time being though it's
1181 highly recommended to start moving old options out of the
1182 system-wide /etc/make.conf file into the new /etc/src.conf
1183 while also properly renaming them. More conversions will
1184 likely follow. Posting to current@:
1186 http://lists.freebsd.org/pipermail/freebsd-current/2006-March/061725.html
1189 The NETSMBCRYPTO kernel option has been retired because its
1190 functionality is always included in NETSMB and smbfs.ko now.
1193 The TDFX_LINUX kernel option was retired and replaced by the
1194 tdfx_linux device. The latter can be loaded as the 3dfx_linux.ko
1195 kernel module. Loading it alone should suffice to get 3dfx support
1196 for Linux apps because it will pull in 3dfx.ko and linux.ko through
1200 The 'audit' group was added to support the new auditing functionality
1201 in the base system. Be sure to follow the directions for updating,
1202 including the requirement to run mergemaster -p.
1205 The kernel ABI to file system modules was changed on i386.
1206 Please make sure that your kernel and modules are in sync.
1209 This actually occured some time ago, but installing the kernel
1210 now also installs a bunch of symbol files for the kernel modules.
1211 This increases the size of /boot/kernel to about 67Mbytes. You
1212 will need twice this if you will eventually back this up to kernel.old
1213 on your next install.
1214 If you have a shortage of room in your root partition, you should add
1215 -DINSTALL_NODEBUG to your make arguments or add INSTALL_NODEBUG="yes"
1216 to your /etc/make.conf.
1219 libc's malloc implementation has been replaced. This change has the
1220 potential to uncover application bugs that previously went unnoticed.
1221 See the malloc(3) manual page for more details.
1224 The generic netgraph(4) cookie has been changed. If you upgrade
1225 kernel passing this point, you also need to upgrade userland
1226 and netgraph(4) utilities like ports/net/mpd or ports/net/mpd4.
1229 si(4)'s device files now contain the unit number.
1230 Uses of {cua,tty}A[0-9a-f] should be replaced by {cua,tty}A0[0-9a-f].
1233 The kernel ABI was mostly destroyed due to a change in the size
1234 of struct lock_object which is nested in other structures such
1235 as mutexes which are nested in all sorts of other structures.
1236 Make sure your kernel and modules are in sync.
1239 The page coloring algorithm in the VM subsystem was converted
1240 from tuning with kernel options to autotuning. Please remove
1241 any PQ_* option except PQ_NOOPT from your kernel config.
1244 The net80211-related tools in the tools/tools/ath directory
1245 have been moved to tools/tools/net80211 and renamed with a
1246 "wlan" prefix. Scripts that use them should be adjusted
1250 Scripts in the local_startup directories (as defined in
1251 /etc/defaults/rc.conf) that have the new rc.d semantics will
1252 now be run as part of the base system rcorder. If there are
1253 errors or problems with one of these local scripts, it could
1254 cause boot problems. If you encounter such problems, boot in
1255 single user mode, remove that script from the */rc.d directory.
1256 Please report the problem to the port's maintainer, and the
1257 freebsd-ports@freebsd.org mailing list.
1260 The nodev mount option was deprecated in RELENG_6 (where it
1261 was a no-op), and is now unsupported. If you have nodev or dev listed
1262 in /etc/fstab, remove it, otherwise it will result in a mount error.
1265 ABI between ipfw(4) and ipfw(8) has been changed. You need
1266 to rebuild ipfw(8) when rebuilding kernel.
1269 rp(4)'s device files now contain the unit number.
1270 Uses of {cua,tty}R[0-9a-f] should be replaced by {cua,tty}R0[0-9a-f].
1273 /etc/rc.d/ppp-user has been renamed to /etc/rc.d/ppp.
1274 Its /etc/rc.conf.d configuration file has been `ppp' from
1275 the beginning, and hence there is no need to touch it.
1278 Now most modules get their build-time options from the kernel
1279 configuration file. A few modules still have fixed options
1280 due to their non-conformant implementation, but they will be
1281 corrected eventually. You may need to review the options of
1282 the modules in use, explicitly specify the non-default options
1283 in the kernel configuration file, and rebuild the kernel and
1287 kern.polling.enable sysctl MIB is now deprecated. Use ifconfig(8)
1288 to turn polling(4) on your interfaces.
1291 The old bridge(4) implementation was retired. The new
1292 if_bridge(4) serves as a full functional replacement.
1295 The ai_addrlen of a struct addrinfo was changed to a socklen_t
1296 to conform to POSIX-2001. This change broke an ABI
1297 compatibility on 64 bit architecture. You have to recompile
1298 userland programs that use getaddrinfo(3) on 64 bit
1302 RELENG_6 branched here.
1305 The pccard_ifconfig rc.conf variable has been removed and a new
1306 variable, ifconfig_DEFAULT has been introduced. Unlike
1307 pccard_ifconfig, ifconfig_DEFAULT applies to ALL interfaces that
1308 do not have ifconfig_ifn entries rather than just those in
1309 removable_interfaces.
1312 Some previous versions of PAM have permitted the use of
1313 non-absolute paths in /etc/pam.conf or /etc/pam.d/* when referring
1314 to third party PAM modules in /usr/local/lib. A change has been
1315 made to require the use of absolute paths in order to avoid
1316 ambiguity and dependence on library path configuration, which may
1317 affect existing configurations.
1320 Major changes to network interface API. All drivers must be
1321 recompiled. Drivers not in the base system will need to be
1322 updated to the new APIs.
1325 Changes were made to kinfo_proc in sys/user.h. Please recompile
1326 userland, or commands like `fstat', `pkill', `ps', `top' and `w'
1327 will not behave correctly.
1329 The API and ABI for hwpmc(4) have changed with the addition
1330 of sampling support. Please recompile lib/libpmc(3) and
1331 usr.sbin/{pmcstat,pmccontrol}.
1334 The OpenBSD dhclient was imported in place of the ISC dhclient
1335 and the network interface configuration scripts were updated
1336 accordingly. If you use DHCP to configure your interfaces, you
1337 must now run devd. Also, DNS updating was lost so you will need
1338 to find a workaround if you use this feature.
1340 The '_dhcp' user was added to support the OpenBSD dhclient. Be
1341 sure to run mergemaster -p (like you are supposed to do every time
1345 if_bridge was added to the tree. This has changed struct ifnet.
1346 Please recompile userland and all network related modules.
1349 The n_net of a struct netent was changed to an uint32_t, and
1350 1st argument of getnetbyaddr() was changed to an uint32_t, to
1351 conform to POSIX-2001. These changes broke an ABI
1352 compatibility on 64 bit architecture. With these changes,
1353 shlib major of libpcap was bumped. You have to recompile
1354 userland programs that use getnetbyaddr(3), getnetbyname(3),
1355 getnetent(3) and/or libpcap on 64 bit architecture.
1358 Kernel parsing of extra options on '#!' first lines of shell
1359 scripts has changed. Lines with multiple options likely will
1360 fail after this date. For full details, please see
1361 http://people.freebsd.org/~gad/Updating-20050528.txt
1364 The packet filter (pf) code has been updated to OpenBSD 3.7
1365 Please note the changed anchor syntax and the fact that
1366 authpf(8) now needs a mounted fdescfs(5) to function.
1369 The NO_MIXED_MODE kernel option has been removed from the i386
1370 amd64 platforms as its use has been superceded by the new local
1371 APIC timer code. Any kernel config files containing this option
1375 The on-disk format of LC_CTYPE files was changed to be machine
1376 independent. Please make sure NOT to use NO_CLEAN buildworld
1377 when crossing this point. Crossing this point also requires
1378 recompile or reinstall of all locale depended packages.
1381 The ifi_epoch member of struct if_data has been changed to
1382 contain the uptime at which the interface was created or the
1383 statistics zeroed rather then the wall clock time because
1384 wallclock time may go backwards. This should have no impact
1385 unless an snmp implementation is using this value (I know of
1386 none at this point.)
1389 The acpi_perf and acpi_throttle drivers are now part of the
1390 acpi(4) main module. They are no longer built separately.
1393 The layout of struct image_params has changed. You have to
1394 recompile all compatibility modules (linux, svr4, etc) for use
1395 with the new kernel.
1398 The p4tcc driver has been merged into cpufreq(4). This makes
1399 "options CPU_ENABLE_TCC" obsolete. Please load cpufreq.ko or
1400 compile in "device cpufreq" to restore this functionality.
1403 The responsibility of recomputing the file system summary of
1404 a SoftUpdates-enabled dirty volume has been transferred to the
1405 background fsck. A rebuild of fsck(8) utility is recommended
1406 if you have updated the kernel.
1408 To get the old behavior (recompute file system summary at mount
1409 time), you can set vfs.ffs.compute_summary_at_mount=1 before
1410 mounting the new volume.
1413 The cpufreq import is complete. As part of this, the sysctls for
1414 acpi(4) throttling have been removed. The power_profile script
1415 has been updated, so you can use performance/economy_cpu_freq in
1416 rc.conf(5) to set AC on/offline cpu frequencies.
1419 NG_VERSION has been increased. Recompiling kernel (or ng_socket.ko)
1420 requires recompiling libnetgraph and userland netgraph utilities.
1423 Support for abbreviated forms of a number of ipfw options is
1424 now deprecated. Warnings are printed to stderr indicating the
1425 correct full form when a match occurs. Some abbreviations may
1426 be supported at a later date based on user feedback. To be
1427 considered for support, abbreviations must be in use prior to
1428 this commit and unlikely to be confused with current key words.
1431 By a popular demand, a lot of NOFOO options were renamed
1432 to NO_FOO (see bsd.compat.mk for a full list). The old
1433 spellings are still supported, but will cause annoying
1434 warnings on stderr. Make sure you upgrade properly (see
1435 the COMMON ITEMS: section later in this file).
1438 Auto-loading of ancillary wlan modules such as wlan_wep has
1439 been temporarily disabled; you need to statically configure
1440 the modules you need into your kernel or explicitly load them
1441 prior to use. Specifically, if you intend to use WEP encryption
1442 with an 802.11 device load/configure wlan_wep; if you want to
1443 use WPA with the ath driver load/configure wlan_tkip, wlan_ccmp,
1444 and wlan_xauth as required.
1447 The behaviour of ppp(8) has changed slightly. If lqr is enabled
1448 (``enable lqr''), older versions would revert to LCP ECHO mode on
1449 negotiation failure. Now, ``enable echo'' is required for this
1450 behaviour. The ppp version number has been bumped to 3.4.2 to
1454 The wlan support has been updated to split the crypto support
1455 into separate modules. For static WEP you must configure the
1456 wlan_wep module in your system or build and install the module
1457 in place where it can be loaded (the kernel will auto-load
1458 the module when a wep key is configured).
1461 The ath driver has been updated to split the tx rate control
1462 algorithm into a separate module. You need to include either
1463 ath_rate_onoe or ath_rate_amrr when configuring the kernel.
1466 Support for systems with an 80386 CPU has been removed. Please
1467 use FreeBSD 5.x or earlier on systems with an 80386.
1470 We have had a hack which would mount the root filesystem
1471 R/W if the device were named 'md*'. As part of the vnode
1472 work I'm doing I have had to remove this hack. People
1473 building systems which use preloaded MD root filesystems
1474 may need to insert a "/sbin/mount -u -o rw /dev/md0 /" in
1475 their /etc/rc scripts.
1478 FreeBSD 5.3 shipped here.
1481 The size of struct tcpcb has changed again due to the removal
1482 of RFC1644 T/TCP. You have to recompile userland programs that
1483 read kmem for tcp sockets directly (netstat, sockstat, etc.)
1486 The size of struct tcpcb has changed. You have to recompile
1487 userland programs that read kmem for tcp sockets directly
1488 (netstat, sockstat, etc.)
1491 RELENG_5 branched here. For older entries, please see updating
1492 in the RELENG_5 branch.
1498 Avoid using make -j when upgrading. From time to time in the
1499 past there have been problems using -j with buildworld and/or
1500 installworld. This is especially true when upgrading between
1501 "distant" versions (eg one that cross a major release boundary
1502 or several minor releases, or when several months have passed
1503 on the -current branch).
1505 Sometimes, obscure build problems are the result of environment
1506 poisoning. This can happen because the make utility reads its
1507 environment when searching for values for global variables.
1508 To run your build attempts in an "environmental clean room",
1509 prefix all make commands with 'env -i '. See the env(1) manual
1510 page for more details.
1512 When upgrading from one major version to another it is generally
1513 best to upgrade to the latest code in the currently installed branch
1514 first, then do an upgrade to the new branch. This is the best-tested
1515 upgrade path, and has the highest probability of being successful.
1516 Please try this approach before reporting problems with a major
1521 If you are updating from a prior version of FreeBSD (even one just
1522 a few days old), you should follow this procedure. It is the most
1523 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
1525 make kernel-toolchain
1526 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE
1527 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE
1529 To test a kernel once
1530 ---------------------
1531 If you just want to boot a kernel once (because you are not sure
1532 if it works, or if you want to boot a known bad kernel to provide
1533 debugging information) run
1534 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
1535 nextboot -k testkernel
1537 To just build a kernel when you know that it won't mess you up
1538 --------------------------------------------------------------
1539 This assumes you are already running a 5.X system. Replace
1540 ${arch} with the architecture of your machine (e.g. "i386",
1541 "alpha", "amd64", "ia64", "pc98", "sparc64", etc).
1543 cd src/sys/${arch}/conf
1544 config KERNEL_NAME_HERE
1545 cd ../compile/KERNEL_NAME_HERE
1550 If this fails, go to the "To build a kernel" section.
1552 To rebuild everything and install it on the current system.
1553 -----------------------------------------------------------
1554 # Note: sometimes if you are running current you gotta do more than
1555 # is listed here if you are upgrading from a really old current.
1557 <make sure you have good level 0 dumps>
1559 make kernel KERNCONF=YOUR_KERNEL_HERE
1561 <reboot in single user> [3]
1569 To cross-install current onto a separate partition
1570 --------------------------------------------------
1571 # In this approach we use a separate partition to hold
1572 # current's root, 'usr', and 'var' directories. A partition
1573 # holding "/", "/usr" and "/var" should be about 2GB in
1576 <make sure you have good level 0 dumps>
1579 make buildkernel KERNCONF=YOUR_KERNEL_HERE
1580 <maybe newfs current's root partition>
1581 <mount current's root partition on directory ${CURRENT_ROOT}>
1582 make installworld DESTDIR=${CURRENT_ROOT}
1583 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
1584 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT}
1585 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd
1586 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
1587 <reboot into current>
1588 <do a "native" rebuild/install as described in the previous section>
1589 <maybe install compatibility libraries from ports/misc/compat*>
1593 To upgrade in-place from 5.x-stable to current
1594 ----------------------------------------------
1595 <make sure you have good level 0 dumps>
1597 make kernel KERNCONF=YOUR_KERNEL_HERE [8]
1599 <reboot in single user> [3]
1606 Make sure that you've read the UPDATING file to understand the
1607 tweaks to various things you need. At this point in the life
1608 cycle of current, things change often and you are on your own
1609 to cope. The defaults can also change, so please read ALL of
1610 the UPDATING entries.
1612 Also, if you are tracking -current, you must be subscribed to
1613 freebsd-current@freebsd.org. Make sure that before you update
1614 your sources that you have read and understood all the recent
1615 messages there. If in doubt, please track -stable which has
1616 much fewer pitfalls.
1618 [1] If you have third party modules, such as vmware, you
1619 should disable them at this point so they don't crash your
1622 [3] From the bootblocks, boot -s, and then do
1627 adjkerntz -i # if CMOS is wall time
1628 Also, when doing a major release upgrade, it is required that
1629 you boot into single user mode to do the installworld.
1631 [4] Note: This step is non-optional. Failure to do this step
1632 can result in a significant reduction in the functionality of the
1633 system. Attempting to do it by hand is not recommended and those
1634 that pursue this avenue should read this file carefully, as well
1635 as the archives of freebsd-current and freebsd-hackers mailing lists
1636 for potential gotchas.
1638 [5] Usually this step is a noop. However, from time to time
1639 you may need to do this if you get unknown user in the following
1640 step. It never hurts to do it all the time. You may need to
1641 install a new mergemaster (cd src/usr.sbin/mergemaster && make
1642 install) after the buildworld before this step if you last updated
1643 from current before 20020224 or from -stable before 20020408.
1645 [8] In order to have a kernel that can run the 4.x binaries
1646 needed to do an installworld, you must include the COMPAT_FREEBSD4
1647 option in your kernel. Failure to do so may leave you with a system
1648 that is hard to boot to recover. A similar kernel option COMPAT_FREEBSD5
1649 is required to run the 5.x binaries on more recent kernels.
1651 Make sure that you merge any new devices from GENERIC since the
1652 last time you updated your kernel config file.
1654 [9] When checking out sources, you must include the -P flag to have
1655 cvs prune empty directories.
1657 If CPUTYPE is defined in your /etc/make.conf, make sure to use the
1658 "?=" instead of the "=" assignment operator, so that buildworld can
1659 override the CPUTYPE if it needs to.
1661 MAKEOBJDIRPREFIX must be defined in an environment variable, and
1662 not on the command line, or in /etc/make.conf. buildworld will
1663 warn if it is improperly defined.
1666 This file contains a list, in reverse chronological order, of major
1667 breakages in tracking -current. Not all things will be listed here,
1668 and it only starts on October 16, 2004. Updating files can found in
1669 previous releases if your system is older than this.
1671 Copyright information:
1673 Copyright 1998-2005 M. Warner Losh. All Rights Reserved.
1675 Redistribution, publication, translation and use, with or without
1676 modification, in full or in part, in any form or format of this
1677 document are permitted without further permission from the author.
1679 THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR
1680 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
1681 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
1682 DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT,
1683 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
1684 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
1685 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1686 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
1687 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
1688 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1689 POSSIBILITY OF SUCH DAMAGE.
1691 If you find this document useful, and you want to, you may buy the
1694 Contact Warner Losh if you have any questions about your use of