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.
19 802.11s D3.03 support was committed. This is incompatible with
20 the previous code, which was based on D3.0.
23 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for
24 mount(8) and -a option for df(1) to see them.
27 Remove the option STOP_NMI. The default action is now to use NMI
28 only for KDB via the newly introduced function stop_cpus_hard()
29 and maintain stop_cpus() to just use a normal IPI_STOP on ia32
36 Bump the shared library version numbers for all libraries that
37 do not use symbol versioning as part of the 8.0-RELEASE cycle.
38 Bump __FreeBSD_version to 800105.
41 Due to changes in the implementation of virtual network stack
42 support, all network-related kernel modules must be recompiled.
43 As this change breaks the ABI, bump __FreeBSD_version to 800104.
46 The TOE interface to the TCP syncache has been modified to remove struct
47 tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. The
48 cxgb driver is the only TOE consumer affected by this change, and needs
49 to be recompiled along with the kernel. As this change breaks the ABI,
50 bump __FreeBSD_version to 800103.
53 Padding has been added to struct tcpcb, sackhint and tcpstat in
54 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst
55 maintainig the ABI. However, this change breaks the ABI, so bump
56 __FreeBSD_version to 800102. User space tools that rely on the size of
57 any of these structs (e.g. sockstat) need to be recompiled.
60 The NFS_LEGACYRPC option has been removed along with the old
61 kernel RPC implementation that this option selected. Kernel
62 configurations may need to be adjusted.
65 The network interface device nodes at /dev/net/<interface> have
66 been removed. All ioctl operations can be performed the normal
67 way using routing sockets. The kqueue functionality can
68 generally be replaced with routing sockets.
71 The documentation from the FreeBSD Documentation Project
72 (Handbook, FAQ, etc.) is now installed via packages by
73 sysinstall(8) and under the /usr/local/share/doc/freebsd
74 directory instead of /usr/share/doc.
77 The ABI of various structures related to the SYSV IPC API have
78 been changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43
79 kernel options now all require COMPAT_FREEBSD7.
80 Bump __FreeBSD_version to 800100.
83 Layout of struct vnet has changed as routing related variables
84 were moved to their own Vimage module. Modules need to be
85 recompiled. Bump __FreeBSD_version to 800099.
88 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023
89 and 1024 respectively. As long as no more than 16 groups per
90 process are used, no changes should be visible. When more
91 than 16 groups are used, old binaries may fail if they call
92 getgroups() or getgrouplist() with statically sized storage.
93 Recompiling will work around this, but applications should be
94 modified to use dynamically allocated storage for group arrays
95 as POSIX.1-2008 does not cap an implementation's number of
96 supported groups at NGROUPS_MAX+1 as previous versions did.
98 NFS and portalfs mounts may also be affected as the list of
99 groups is truncated to 16. Users of NFS who use more than 16
100 groups, should take care that negative group permissions are not
101 used on the exported file systems as they will not be reliable
102 unless a GSSAPI based authentication method is used.
105 The compiling option ADAPTIVE_LOCKMGRS has been introduced.
106 This option compiles in the support for adaptive spinning for lockmgrs
107 which want to enable it. The lockinit() function now accepts the
108 flag LK_ADAPTIVE in order to make the lock object subject to
109 adaptive spinning when both held in write and read mode.
112 The layout of the structure returned by IEEE80211_IOC_STA_INFO
113 has changed. User applications that use this ioctl need to be
117 The layout of struct thread has changed. Kernel and modules
121 The layout of structs ifnet, domain, protosw and vnet_net has
122 changed. Kernel modules need to be rebuilt.
123 Bump __FreeBSD_version to 800097.
126 window(1) has been removed from the base system. It can now be
127 installed from ports. The port is called misc/window.
130 The way we are storing and accessing `routing table' entries
131 has changed. Programs reading the FIB, like netstat, need to
135 A new netisr implementation has been added for FreeBSD 8. Network
136 file system modules, such as igmp, ipdivert, and others, should be
138 Bump __FreeBSD_version to 800096.
141 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose
145 Add VOP_ACCESSX(9). File system modules need to be rebuilt.
146 Bump __FreeBSD_version to 800094.
149 Add mnt_xflag field to 'struct mount'. File system modules
151 Bump __FreeBSD_version to 800093.
154 The compiling option ADAPTIVE_SX has been retired while it has been
155 introduced the option NO_ADAPTIVE_SX which handles the reversed logic.
156 The KPI for sx_init_flags() changes as accepting flags:
157 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag
158 has been introduced in order to handle the reversed logic.
159 Bump __FreeBSD_version to 800092.
162 Add support for hierarchical jails. Remove global securelevel.
163 Bump __FreeBSD_version to 800091.
166 The layout of struct vnet_net has changed, therefore modules
168 Bump __FreeBSD_version to 800090.
171 The newly imported zic(8) produces a new format in the
172 output. Please run tzsetup(8) to install the newly created
173 data to /etc/localtime.
176 The sysctl tree for the usb stack has renamed from hw.usb2.* to
177 hw.usb.* and is now consistent again with previous releases.
180 802.11 monitor mode support was revised and driver api's
181 were changed. Drivers dependent on net80211 now support
182 DLT_IEEE802_11_RADIO instead of DLT_IEEE802_11. No
183 user-visible data structures were changed but applications
184 that use DLT_IEEE802_11 may require changes.
185 Bump __FreeBSD_version to 800088.
188 The layout of the following structs has changed: sysctl_oid,
189 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet,
190 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or
191 panics may be experienced. World rebuild is required for
192 correctly checking networking state from userland.
193 Bump __FreeBSD_version to 800085.
196 MLDv2 and Source-Specific Multicast (SSM) have been merged
197 to the IPv6 stack. VIMAGE hooks are in but not yet used.
198 The implementation of SSM within FreeBSD's IPv6 stack closely
199 follows the IPv4 implementation.
201 For kernel developers:
203 * The most important changes are that the ip6_output() and
204 ip6_input() paths no longer take the IN6_MULTI_LOCK,
205 and this lock has been downgraded to a non-recursive mutex.
207 * As with the changes to the IPv4 stack to support SSM, filtering
208 of inbound multicast traffic must now be performed by transport
209 protocols within the IPv6 stack. This does not apply to TCP and
210 SCTP, however, it does apply to UDP in IPv6 and raw IPv6.
212 * The KPIs used by IPv6 multicast are similar to those used by
213 the IPv4 stack, with the following differences:
214 * im6o_mc_filter() is analogous to imo_multicast_filter().
215 * The legacy KAME entry points in6_joingroup and in6_leavegroup()
216 are shimmed to in6_mc_join() and in6_mc_leave() respectively.
217 * IN6_LOOKUP_MULTI() has been deprecated and removed.
218 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs
219 for MLDv1 have an additional 'timer' argument which is used to
220 jitter the initial membership report for the solicited-node
221 multicast membership on-link.
222 * This is not strictly needed for MLDv2, which already jitters
223 its report transmissions. However, the 'timer' argument is
224 preserved in case MLDv1 is active on the interface.
226 * The KAME linked-list based IPv6 membership implementation has
227 been refactored to use a vector similar to that used by the IPv4
229 Code which maintains a list of its own multicast memberships
230 internally, e.g. carp, has been updated to reflect the new
233 * There is a known Lock Order Reversal (LOR) due to in6_setscope()
234 acquiring the IF_AFDATA_LOCK and being called within ip6_output().
235 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an
236 implementation constraint which needs to be addressed in HEAD.
238 For application developers:
240 * The changes are broadly similar to those made for the IPv4
243 * The use of IPv4 and IPv6 multicast socket options on the same
244 socket, using mapped addresses, HAS NOT been tested or supported.
246 * There are a number of issues with the implementation of various
247 IPv6 multicast APIs which need to be resolved in the API surface
248 before the implementation is fully compatible with KAME userland
249 use, and these are mostly to do with interface index treatment.
251 * The literature available discusses the use of either the delta / ASM
252 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API
253 using setsourcefilter(3)/getsourcefilter(3). For more information
254 please refer to RFC 3768, 'Socket Interface Extensions for
255 Multicast Source Filters'.
257 * Applications which use the published RFC 3678 APIs should be fine.
259 For systems administrators:
261 * The mtest(8) utility has been refactored to support IPv6, in
262 addition to IPv4. Interface addresses are no longer accepted
263 as arguments, their names must be used instead. The utility
264 will map the interface name to its first IPv4 address as
265 returned by getifaddrs(3).
267 * The ifmcstat(8) utility has also been updated to print the MLDv2
268 endpoint state and source filter lists via sysctl(3).
270 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable
271 loopback of IPv6 multicast datagrams by default; it defaults to 1
272 to preserve the existing behaviour. Disabling multicast loopback is
273 recommended for optimal system performance.
275 * The IPv6 MROUTING code has been changed to examine this sysctl
276 instead of attempting to perform a group lookup before looping
277 back forwarded datagrams.
279 Bump __FreeBSD_version to 800084.
282 Implement low-level Bluetooth HCI API.
283 Bump __FreeBSD_version to 800083.
286 The layout of struct malloc_type, used by modules to register new
287 memory allocation types, has changed. Most modules will need to
288 be rebuilt or panics may be experienced.
289 Bump __FreeBSD_version to 800081.
292 Anticipate overflowing inp_flags - add inp_flags2.
293 This changes most offsets in inpcb, so checking v4 connection
294 state will require a world rebuild.
295 Bump __FreeBSD_version to 800080.
298 Add an llentry to struct route and struct route_in6. Modules
299 embedding a struct route will need to be recompiled.
300 Bump __FreeBSD_version to 800079.
303 The size of rt_metrics_lite and by extension rtentry has changed.
304 Networking administration apps will need to be recompiled.
305 The route command now supports show as an alias for get, weighting
306 of routes, sticky and nostick flags to alter the behavior of stateful
308 Bump __FreeBSD_version to 800078.
311 Do not use Giant for kbdmux(4) locking. This is wrong and
312 apparently causing more problems than it solves. This will
313 re-open the issue where interrupt handlers may race with
314 kbdmux(4) in polling mode. Typical symptoms include (but
315 not limited to) duplicated and/or missing characters when
316 low level console functions (such as gets) are used while
317 interrupts are enabled (for example geli password prompt,
318 mountroot prompt etc.). Disabling kbdmux(4) may help.
321 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed;
322 kernel modules referencing any of the above need to be recompiled.
323 Bump __FreeBSD_version to 800075.
326 GEOM_PART has become the default partition slicer for storage devices,
327 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It
328 introduces some changes:
330 MSDOS/EBR: the devices created from MSDOS extended partition entries
331 (EBR) can be named differently than with GEOM_MBR and are now symlinks
332 to devices with offset-based names. fstabs may need to be modified.
334 BSD: the "geometry does not match label" warning is harmless in most
335 cases but it points to problems in file system misalignment with
336 disk geometry. The "c" partition is now implicit, covers the whole
337 top-level drive and cannot be (mis)used by users.
339 General: Kernel dumps are now not allowed to be written to devices
340 whose partition types indicate they are meant to be used for file
341 systems (or, in case of MSDOS partitions, as something else than
344 Most of these changes date approximately from 200812.
347 The uscanner(4) driver has been removed from the kernel. This follows
348 Linux removing theirs in 2.6 and making libusb the default interface
352 The multicast forwarding code has been cleaned up. netstat(1)
353 only relies on KVM now for printing bandwidth upcall meters.
354 The IPv4 and IPv6 modules are split into ip_mroute_mod and
355 ip6_mroute_mod respectively. The config(5) options for statically
356 compiling this code remain the same, i.e. 'options MROUTING'.
359 Support for the IFF_NEEDSGIANT network interface flag has been
360 removed, which means that non-MPSAFE network device drivers are no
361 longer supported. In particular, if_ar, if_sr, and network device
362 drivers from the old (legacy) USB stack can no longer be built or
366 POSIX.1 Native Language Support (NLS) has been enabled in libc and
367 a bunch of new language catalog files have also been added.
368 This means that some common libc messages are now localized and
369 they depend on the LC_MESSAGES environmental variable.
372 The k8temp(4) driver has been renamed to amdtemp(4) since
373 support for K10 and K11 CPU families was added.
376 IGMPv3 and Source-Specific Multicast (SSM) have been merged
377 to the IPv4 stack. VIMAGE hooks are in but not yet used.
379 For kernel developers, the most important changes are that the
380 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(),
381 and this lock has been downgraded to a non-recursive mutex.
383 Transport protocols (UDP, Raw IP) are now responsible for filtering
384 inbound multicast traffic according to group membership and source
385 filters. The imo_multicast_filter() KPI exists for this purpose.
386 Transports which do not use multicast (SCTP, TCP) already reject
387 multicast by default. Forwarding and receive performance may improve
388 as a mutex acquisition is no longer needed in the ip_input()
389 low-level input path. in_addmulti() and in_delmulti() are shimmed
390 to new KPIs which exist to support SSM in-kernel.
392 For application developers, it is recommended that loopback of
393 multicast datagrams be disabled for best performance, as this
394 will still cause the lock to be taken for each looped-back
395 datagram transmission. The net.inet.ip.mcast.loop sysctl may
396 be tuned to 0 to disable loopback by default; it defaults to 1
397 to preserve the existing behaviour.
399 For systems administrators, to obtain best performance with
400 multicast reception and multiple groups, it is always recommended
401 that a card with a suitably precise hash filter is used. Hash
402 collisions will still result in the lock being taken within the
403 transport protocol input path to check group membership.
405 If deploying FreeBSD in an environment with IGMP snooping switches,
406 it is recommended that the net.inet.igmp.sendlocal sysctl remain
407 enabled; this forces 224.0.0.0/24 group membership to be announced
410 The size of 'struct igmpstat' has changed; netstat needs to be
411 recompiled to reflect this.
412 Bump __FreeBSD_version to 800070.
415 libusb20.so.1 is now installed as libusb.so.1 and the ports system
416 updated to use it. This requires a buildworld/installworld in order to
417 update the library and dependencies (usbconfig, etc). Its advisable to
418 rebuild all ports which uses libusb. More specific directions are given
419 in the ports collection UPDATING file. Any /etc/libmap.conf entries for
420 libusb are no longer required and can be removed.
423 A workaround is committed to allow the creation of System V shared
424 memory segment of size > 2 GB on the 64-bit architectures.
425 Due to a limitation of the existing ABI, the shm_segsz member
426 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is
427 wrong for large segments. Note that limits must be explicitly
428 raised to allow such segments to be created.
431 The layout of struct ifnet has changed, requiring a rebuild of all
432 network device driver modules.
435 The /dev handling for the new USB stack has changed, a
436 buildworld/installworld is required for libusb20.
439 The new USB2 stack has now been permanently moved in and all kernel and
440 module names reverted to their previous values (eg, usb, ehci, ohci,
441 ums, ...). The old usb stack can be compiled in by prefixing the name
442 with the letter 'o', the old usb modules have been removed.
443 Updating entry 20090216 for xorg and 20090215 for libmap may still
447 The rc.conf(5) option if_up_delay has been renamed to
448 defaultroute_delay to better reflect its purpose. If you have
449 customized this setting in /etc/rc.conf you need to update it to
453 xorg 7.4 wants to configure its input devices via hald which does not
454 yet work with USB2. If the keyboard/mouse does not work in xorg then
456 Option "AllowEmptyInput" "off"
457 to your ServerLayout section. This will cause X to use the configured
458 kbd and mouse sections from your xorg.conf.
461 The GENERIC kernels for all architectures now default to the new USB2
462 stack. No kernel config options or code have been removed so if a
463 problem arises please report it and optionally revert to the old USB
464 stack. If you are loading USB kernel modules or have a custom kernel
465 that includes GENERIC then ensure that usb names are also changed over,
466 eg uftdi -> usb2_serial_ftdi.
468 Older programs linked against the ports libusb 0.1 need to be
469 redirected to the new stack's libusb20. /etc/libmap.conf can
471 # Map old usb library to new one for usb2 stack
472 libusb-0.1.so.8 libusb20.so.1
475 The ichsmb(4) driver has been changed to require SMBus slave
476 addresses be left-justified (xxxxxxx0b) rather than right-justified.
477 All of the other SMBus controller drivers require left-justified
478 slave addresses, so this change makes all the drivers provide the
482 INET6 statistics (struct ip6stat) was updated.
483 netstat(1) needs to be recompiled.
486 NTFS has been removed from GENERIC kernel on amd64 to match
487 GENERIC on i386. Should not cause any issues since mount_ntfs(8)
488 will load ntfs.ko module automatically when NTFS support is
489 actually needed, unless ntfs.ko is not installed or security
490 level prohibits loading kernel modules. If either is the case,
491 "options NTFS" has to be added into kernel config.
494 TCP Appropriate Byte Counting (RFC 3465) support added to kernel.
495 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to
496 800061. User space tools that rely on the size of struct tcpcb in
497 tcp_var.h (e.g. sockstat) need to be recompiled.
500 ng_tty(4) module updated to match the new TTY subsystem.
501 Due to API change, user-level applications must be updated.
502 New API support added to mpd5 CVS and expected to be present
503 in next mpd5.3 release.
506 With __FreeBSD_version 800060 the makefs tool is part of
507 the base system (it was a port).
510 The afdata and ifnet locks have been changed from mutexes to
511 rwlocks, network modules will need to be re-compiled.
514 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite.
515 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated.
516 The new code reduced struct rtentry{} by 16 bytes on 32-bit
517 architecture and 40 bytes on 64-bit architecture. The userland
518 applications "arp" and "ndp" have been updated accordingly.
519 The output from "netstat -r" shows only routing entries and
520 none of the L2 information.
523 __FreeBSD_version 800057 marks the switchover from the
524 binary ath hal to source code. Users must add the line:
526 options AH_SUPPORT_AR5416
528 to their kernel config files when specifying:
532 The ath_hal module no longer exists; the code is now compiled
533 together with the driver in the ath module. It is now
534 possible to tailor chip support (i.e. reduce the set of chips
535 and thereby the code size); consult ath_hal(4) for details.
538 __FreeBSD_version 800054 adds memory barriers to
539 <machine/atomic.h>, new interfaces to ifnet to facilitate
540 multiple hardware transmit queues for cards that support
541 them, and a lock-less ring-buffer implementation to
542 enable drivers to more efficiently manage queueing of
546 A new version of ZFS (version 13) has been merged to -HEAD.
547 This version has zpool attribute "listsnapshots" off by
548 default, which means "zfs list" does not show snapshots,
549 and is the same as Solaris behavior.
552 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled.
555 The uhci, ohci, ehci and slhci USB Host controller drivers have
556 been put into separate modules. If you load the usb module
557 separately through loader.conf you will need to load the
558 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0
559 controller add the following to loader.conf:
565 The ABI used by the PMC toolset has changed. Please keep
566 userland (libpmc(3)) and the kernel module (hwpmc(4)) in
570 atapci kernel module now includes only generic PCI ATA
571 driver. AHCI driver moved to ataahci kernel module.
572 All vendor-specific code moved into separate kernel modules:
573 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek,
574 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron,
575 atamarvell, atamicron, atanational, atanetcell, atanvidia,
576 atapromise, ataserverworks, atasiliconimage, atasis, atavia
579 The TTY subsystem of the kernel has been replaced by a new
580 implementation, which provides better scalability and an
581 improved driver model. Most common drivers have been migrated to
582 the new TTY subsystem, while others have not. The following
583 drivers have not yet been ported to the new TTY layer:
586 cy, digi, rc, rp, sio
592 ng_h4, ng_tty, ppp, sl, snp
594 Adding these drivers to your kernel configuration file shall
595 cause compilation to fail.
598 ntpd has been upgraded to 4.2.4p5.
601 OpenSSH has been upgraded to 5.1p1.
603 For many years, FreeBSD's version of OpenSSH preferred DSA
604 over RSA for host and user authentication keys. With this
605 upgrade, we've switched to the vendor's default of RSA over
606 DSA. This may cause upgraded clients to warn about unknown
607 host keys even for previously known hosts. Users should
608 follow the usual procedure for verifying host keys before
609 accepting the RSA key.
611 This can be circumvented by setting the "HostKeyAlgorithms"
612 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh
615 Please note that the sequence of keys offered for
616 authentication has been changed as well. You may want to
617 specify IdentityFile in a different order to revert this
621 The sio(4) driver has been removed from the i386 and amd64
622 kernel configuration files. This means uart(4) is now the
623 default serial port driver on those platforms as well.
625 To prevent collisions with the sio(4) driver, the uart(4) driver
626 uses different names for its device nodes. This means the
627 onboard serial port will now most likely be called "ttyu0"
628 instead of "ttyd0". You may need to reconfigure applications to
629 use the new device names.
631 When using the serial port as a boot console, be sure to update
632 /boot/device.hints and /etc/ttys before booting the new kernel.
633 If you forget to do so, you can still manually specify the hints
634 at the loader prompt:
636 set hint.uart.0.at="isa"
637 set hint.uart.0.port="0x3F8"
638 set hint.uart.0.flags="0x10"
639 set hint.uart.0.irq="4"
643 The gpt(8) utility has been removed. Use gpart(8) to partition
647 The version that Linuxulator emulates was changed from 2.4.2
648 to 2.6.16. If you experience any problems with Linux binaries
649 please try to set sysctl compat.linux.osrelease to 2.4.2 and
650 if it fixes the problem contact emulation mailing list.
653 ISDN4BSD (I4B) was removed from the src tree. You may need to
654 update a your kernel configuration and remove relevant entries.
657 I have checked in code to support multiple routing tables.
658 See the man pages setfib(1) and setfib(2).
659 This is a hopefully backwards compatible version,
660 but to make use of it you need to compile your kernel
661 with options ROUTETABLES=2 (or more up to 16).
664 The 802.11 wireless support was redone to enable multi-bss
665 operation on devices that are capable. The underlying device
666 is no longer used directly but instead wlanX devices are
667 cloned with ifconfig. This requires changes to rc.conf files.
669 ifconfig_ath0="WPA DHCP"
672 ifconfig_wlan0="WPA DHCP"
673 see rc.conf(5) for more details. In addition, mergemaster of
674 /etc/rc.d is highly recommended. Simultaneous update of userland
675 and kernel wouldn't hurt either.
677 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta
678 modules were merged into the base wlan module. All references
679 to these modules (e.g. in kernel config files) must be removed.
682 psm(4) has gained write(2) support in native operation level.
683 Arbitrary commands can be written to /dev/psm%d and status can
684 be read back from it. Therefore, an application is responsible
685 for status validation and error recovery. It is a no-op in
686 other operation levels.
689 Support for KSE threading has been removed from the kernel. To
690 run legacy applications linked against KSE libmap.conf may
691 be used. The following libmap.conf may be used to ensure
692 compatibility with any prior release:
694 libpthread.so.1 libthr.so.1
695 libpthread.so.2 libthr.so.2
696 libkse.so.3 libthr.so.3
699 The layout of struct vmspace has changed. This affects libkvm
700 and any executables that link against libkvm and use the
701 kvm_getprocs() function. In particular, but not exclusively,
702 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1).
703 The effects are minimal, but it's advisable to upgrade world
707 The latest em driver no longer has support in it for the
708 82575 adapter, this is now moved to the igb driver. The
709 split was done to make new features that are incompatible
710 with older hardware easier to do.
713 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4),
714 likewise the kernel option is now GEOM_LINUX_LVM.
717 The default NFS mount mode has changed from UDP to TCP for
718 increased reliability. If you rely on (insecurely) NFS
719 mounting across a firewall you may need to update your
723 Belatedly note the addition of m_collapse for compacting
727 The fts(3) structures have been changed to use adequate
728 integer types for their members and so to be able to cope
729 with huge file trees. The old fts(3) ABI is preserved
730 through symbol versioning in libc, so third-party binaries
731 using fts(3) should still work, although they will not take
732 advantage of the extended types. At the same time, some
733 third-party software might fail to build after this change
734 due to unportable assumptions made in its source code about
735 fts(3) structure members. Such software should be fixed
736 by its vendor or, in the worst case, in the ports tree.
737 FreeBSD_version 800015 marks this change for the unlikely
738 case that a portable fix is impossible.
741 To upgrade to -current after this date, you must be running
742 FreeBSD not older than 6.0-RELEASE. Upgrading to -current
743 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems.
746 The ADAPTIVE_GIANT kernel option has been retired because its
747 functionality is the default now.
750 The AT keyboard emulation of sunkbd(4) has been turned on
751 by default. In order to make the special symbols of the Sun
752 keyboards driven by sunkbd(4) work under X these now have
753 to be configured the same way as Sun USB keyboards driven
754 by ukbd(4) (which also does AT keyboard emulation), f.e.:
756 Option "XkbLayout" "us"
757 Option "XkbRules" "xorg"
758 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us"
761 It has been decided that it is desirable to provide ABI
762 backwards compatibility to the FreeBSD 4/5/6 versions of the
763 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was
764 broken with the introduction of PCI domain support (see the
765 20070930 entry). Unfortunately, this required the ABI of
766 PCIOCGETCONF to be broken again in order to be able to
767 provide backwards compatibility to the old version of that
768 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled
769 again. As for prominent ports this affects neither pciutils
770 nor xorg-server this time, the hal port needs to be rebuilt
774 The misnamed kthread_create() and friends have been renamed
775 to kproc_create() etc. Many of the callers already
777 I will return kthread_create() and friends in a while
778 with implementations that actually create threads, not procs.
779 Renaming corresponds with version 800002.
785 Setting WITHOUT_LIBPTHREAD now means WITHOUT_LIBKSE and
786 WITHOUT_LIBTHR are set.
789 The PCI code has been made aware of PCI domains. This means that
790 the location strings as used by pciconf(8) etc are now in the
791 following format: pci<domain>:<bus>:<device>[:<function>]. It
792 also means that consumers of <sys/pciio.h> potentially need to
793 be recompiled; this includes the hal and xorg-server ports.
796 The caching daemon (cached) was renamed to nscd. nscd.conf
797 configuration file should be used instead of cached.conf and
798 nscd_enable, nscd_pidfile and nscd_flags options should be used
799 instead of cached_enable, cached_pidfile and cached_flags in
803 The getfacl(1) utility now prints owning user and group name
804 instead of owning uid and gid in the three line comment header.
805 This is the same behavior as getfacl(1) on Solaris and Linux.
808 The new IPsec code is now compiled in using the IPSEC option. The
809 IPSEC option now requires "device crypto" be defined in your kernel
810 configuration. The FAST_IPSEC kernel option is now deprecated.
813 The packet filter (pf) code has been updated to OpenBSD 4.1 Please
814 note the changed syntax - keep state is now on by default. Also
815 note the fact that ftp-proxy(8) has been changed from bottom up and
816 has been moved from libexec to usr/sbin. Changes in the ALTQ
817 handling also affect users of IPFW's ALTQ capabilities.
820 Remove KAME IPsec in favor of FAST_IPSEC, which is now the
821 only IPsec supported by FreeBSD. The new IPsec stack
822 supports both IPv4 and IPv6. The kernel option will change
823 after the code changes have settled in. For now the kernel
824 option IPSEC is deprecated and FAST_IPSEC is the only option, that
825 will change after some settling time.
828 The wicontrol(8) utility has been removed from the base system. wi(4)
829 cards should be configured using ifconfig(8), see the man page for more
833 The i386/amd64 GENERIC kernel now defaults to the nfe(4) driver
834 instead of the nve(4) driver. Please update your configuration
838 By default, /etc/rc.d/sendmail no longer rebuilds the aliases
839 database if it is missing or older than the aliases file. If
840 desired, set the new rc.conf option sendmail_rebuild_aliases
841 to "YES" to restore that functionality.
844 The IPv4 multicast socket code has been considerably modified, and
845 moved to the file sys/netinet/in_mcast.c. Initial support for the
846 RFC 3678 Source-Specific Multicast Socket API has been added to
847 the IPv4 network stack.
849 Strict multicast and broadcast reception is now the default for
850 UDP/IPv4 sockets; the net.inet.udp.strict_mcast_mship sysctl variable
851 has now been removed.
853 The RFC 1724 hack for interface selection has been removed; the use
854 of the Linux-derived ip_mreqn structure with IP_MULTICAST_IF has
855 been added to replace it. Consumers such as routed will soon be
856 updated to reflect this.
858 These changes affect users who are running routed(8) or rdisc(8)
859 from the FreeBSD base system on point-to-point or unnumbered
863 The net80211 layer has changed significantly and all wireless
864 drivers that depend on it need to be recompiled. Further these
865 changes require that any program that interacts with the wireless
866 support in the kernel be recompiled; this includes: ifconfig,
867 wpa_supplicant, hostapd, and wlanstats. Users must also, for
868 the moment, kldload the wlan_scan_sta and/or wlan_scan_ap modules
869 if they use modules for wireless support. These modules implement
870 scanning support for station and ap modes, respectively. Failure
871 to load the appropriate module before marking a wireless interface
872 up will result in a message to the console and the device not
876 The pam_nologin(8) module ceases to provide an authentication
877 function and starts providing an account management function.
878 Consequent changes to /etc/pam.d should be brought in using
879 mergemaster(8). Third-party files in /usr/local/etc/pam.d may
880 need manual editing as follows. Locate this line (or similar):
882 auth required pam_nologin.so no_warn
884 and change it according to this example:
886 account required pam_nologin.so no_warn
888 That is, the first word needs to be changed from "auth" to
889 "account". The new line can be moved to the account section
890 within the file for clarity. Not updating pam.conf(5) files
891 will result in nologin(5) ignored by the respective services.
894 The ether_ioctl() function has been synchronized with ioctl(2)
895 and ifnet.if_ioctl. Due to that, the size of one of its arguments
896 has changed on 64-bit architectures. All kernel modules using
897 ether_ioctl() need to be rebuilt on such architectures.
900 Improved INCLUDE_CONFIG_FILE support has been introduced to the
901 config(8) utility. In order to take advantage of this new
902 functionality, you are expected to recompile and install
903 src/usr.sbin/config. If you don't rebuild config(8), and your
904 kernel configuration depends on INCLUDE_CONFIG_FILE, the kernel
905 build will be broken because of a missing "kernconfstring"
909 Symbol versioning is enabled by default. To disable it, use
910 option WITHOUT_SYMVER. It is not advisable to attempt to
911 disable symbol versioning once it is enabled; your installworld
912 will break because a symbol version-less libc will get installed
913 before the install tools. As a result, the old install tools,
914 which previously had symbol dependencies to FBSD_1.0, will fail
915 because the freshly installed libc will not have them.
917 The default threading library (providing "libpthread") has been
918 changed to libthr. If you wish to have libkse as your default,
919 use option DEFAULT_THREAD_LIB=libkse for the buildworld.
922 The ABI breakage in sendmail(8)'s libmilter has been repaired
923 so it is no longer necessary to recompile mail filters (aka,
924 milters). If you recompiled mail filters after the 20070408
925 note, it is not necessary to recompile them again.
928 The new trunk(4) driver has been renamed to lagg(4) as it better
929 reflects its purpose. ifconfig will need to be recompiled.
932 sendmail(8) has been updated to version 8.14.1. Mail filters
933 (aka, milters) compiled against the libmilter included in the
934 base operating system should be recompiled.
937 Firmwares for ipw(4) and iwi(4) are now included in the base tree.
938 In order to use them one must agree to the respective LICENSE in
939 share/doc/legal and define legal.intel_<name>.license_ack=1 via
940 loader.conf(5) or kenv(1). Make sure to deinstall the now
941 deprecated modules from the respective firmware ports.
944 The name resolution/mapping functions addr2ascii(3) and ascii2addr(3)
945 were removed from FreeBSD's libc. These originally came from INRIA
946 IPv6. Nothing in FreeBSD ever used them. They may be regarded as
947 deprecated in previous releases.
948 The AF_LINK support for getnameinfo(3) was merged from NetBSD to
949 replace it as a more portable (and re-entrant) API.
952 To support interrupt filtering a modification to the newbus API
953 has occurred, ABI was broken and __FreeBSD_version was bumped
954 to 700031. Please make sure that your kernel and modules are in
956 http://docs.freebsd.org/cgi/mid.cgi?20070221233124.GA13941
959 The IPv6 multicast forwarding code may now be loaded into GENERIC
960 kernels by loading the ip_mroute.ko module. This is built into the
961 module unless WITHOUT_INET6 or WITHOUT_INET6_SUPPORT options are
962 set; see src.conf(5) for more information.
965 The output of netstat -r has changed. Without -n, we now only
966 print a "network name" without the prefix length if the network
967 address and mask exactly match a Class A/B/C network, and an entry
968 exists in the nsswitch "networks" map.
969 With -n, we print the full unabbreviated CIDR network prefix in
970 the form "a.b.c.d/p". 0.0.0.0/0 is always printed as "default".
971 This change is in preparation for changes such as equal-cost
972 multipath, and to more generally assist operational deployment
973 of FreeBSD as a modern IPv4 router.
976 PIM has been turned on by default in the IPv4 multicast
977 routing code. The kernel option 'PIM' has now been removed.
978 PIM is now built by default if option 'MROUTING' is specified.
979 It may now be loaded into GENERIC kernels by loading the
983 Support for IPIP tunnels (VIFF_TUNNEL) in IPv4 multicast routing
984 has been removed. Its functionality may be achieved by explicitly
985 configuring gif(4) interfaces and using the 'phyint' keyword in
987 XORP does not support source-routed IPv4 multicast tunnels nor the
988 integrated IPIP tunneling, therefore it is not affected by this
989 change. The __FreeBSD_version macro has been bumped to 700030.
992 Support for PCI Message Signalled Interrupts has been
993 re-enabled in the bge driver, only for those chips which are
994 believed to support it properly. If there are any problems,
995 MSI can be disabled completely by setting the
996 'hw.pci.enable_msi' and 'hw.pci.enable_msix' tunables to 0
1000 Support for PCI Message Signalled Interrupts has been
1001 disabled again in the bge driver. Many revisions of the
1002 hardware fail to support it properly. Support can be
1003 re-enabled by removing the #define of BGE_DISABLE_MSI in
1004 "src/sys/dev/bge/if_bge.c".
1007 Support for PCI Message Signalled Interrupts has been added
1008 to the bge driver. If there are any problems, MSI can be
1009 disabled completely by setting the 'hw.pci.enable_msi' and
1010 'hw.pci.enable_msix' tunables to 0 in the loader.
1013 The removal of several facets of the experimental Threading
1014 system from the kernel means that the proc and thread structures
1015 have changed quite a bit. I suggest all kernel modules that might
1016 reference these structures be recompiled.. Especially the
1020 Sound infrastructure has been updated with various fixes and
1021 improvements. Most of the changes are pretty much transparent,
1022 with exceptions of followings:
1023 1) All sound driver specific sysctls (hw.snd.pcm%d.*) have been
1024 moved to their own dev sysctl nodes, for example:
1025 hw.snd.pcm0.vchans -> dev.pcm.0.vchans
1026 2) /dev/dspr%d.%d has been deprecated. Each channel now has its
1027 own chardev in the form of "dsp%d.<function>%d", where <function>
1028 is p = playback, r = record and v = virtual, respectively. Users
1029 are encouraged to use these devs instead of (old) "/dev/dsp%d.%d".
1030 This does not affect those who are using "/dev/dsp".
1033 geom(4)'s gmirror(8) class metadata structure has been
1034 rev'd from v3 to v4. If you update across this point and
1035 your metadata is converted for you, you will not be easily
1036 able to downgrade since the /boot/kernel.old/geom_mirror.ko
1037 kernel module will be unable to read the v4 metadata. You
1038 can resolve this by doing from the loader(8) prompt:
1040 set vfs.root.mountfrom="ufs:/dev/XXX"
1042 where XXX is the root slice of one of the disks that composed
1043 the mirror (i.e.: /dev/ad0s1a). You can then rebuild
1044 the array the same way you built it originally.
1047 The following binaries have been disconnected from the build:
1048 mount_devfs, mount_ext2fs, mount_fdescfs, mount_procfs, mount_linprocfs,
1049 and mount_std. The functionality of these programs has been
1050 moved into the mount program. For example, to mount a devfs
1051 filesystem, instead of using mount_devfs, use: "mount -t devfs".
1052 This does not affect entries in /etc/fstab, since entries in
1053 /etc/fstab are always processed with "mount -t fstype".
1056 Support for PCI Message Signalled Interrupts on i386 and amd64
1057 has been added to the kernel and various drivers will soon be
1058 updated to use MSI when it is available. If there are any problems,
1059 MSI can be disabled completely by setting the 'hw.pci.enable_msi'
1060 and 'hw.pci.enable_msix' tunables to 0 in the loader.
1063 The MUTEX_PROFILING option has been renamed to LOCK_PROFILING.
1064 The lockmgr object layout has been changed as a result of having
1065 a lock_object embedded in it. As a consequence all file system
1066 kernel modules must be re-compiled. The mutex profiling man page
1067 has not yet been updated to reflect this change.
1070 KSE in the kernel has now been made optional and turned on by
1071 default. Use 'nooption KSE' in your kernel config to turn it
1072 off. All kernel modules *must* be recompiled after this change.
1073 There-after, modules from a KSE kernel should be compatible with
1074 modules from a NOKSE kernel due to the temporary padding fields
1075 added to 'struct proc'.
1078 mrouted and its utilities have been removed from the base system.
1081 Some ioctl(2) command codes have changed. Full backward ABI
1082 compatibility is provided if the "options COMPAT_FREEBSD6" is
1083 present in the kernel configuration file. Make sure to add
1084 this option to your kernel config file, or recompile X.Org
1085 and the rest of ports; otherwise they may refuse to work.
1088 tcpslice has been removed from the base system.
1091 The sizes of struct tcpcb (and struct xtcpcb) have changed due to
1092 the rewrite of TCP syncookies. Tools like netstat, sockstat, and
1093 systat needs to be rebuilt.
1096 libpcap updated to v0.9.4 and tcpdump to v3.9.4
1099 The IPFIREWALL_FORWARD_EXTENDED option is gone and the behaviour
1100 for IPFIREWALL_FORWARD is now as it was before when it was first
1101 committed and for years after. The behaviour is now ON.
1104 enigma(1)/crypt(1) utility has been changed on 64 bit architectures.
1105 Now it can decrypt files created from different architectures.
1106 Unfortunately, it is no longer able to decrypt a cipher text
1107 generated with an older version on 64 bit architectures.
1108 If you have such a file, you need old utility to decrypt it.
1111 The interface version of the i4b kernel part has changed. So
1112 after updating the kernel sources and compiling a new kernel,
1113 the i4b user space tools in "/usr/src/usr.sbin/i4b" must also
1114 be rebuilt, and vice versa.
1117 The XBOX kernel now defaults to the nfe(4) driver instead of
1118 the nve(4) driver. Please update your configuration
1122 The i386-only lnc(4) driver for the AMD Am7900 LANCE and Am79C9xx
1123 PCnet family of NICs has been removed. The new le(4) driver serves
1124 as an equivalent but cross-platform replacement with the pcn(4)
1125 driver still providing performance-optimized support for the subset
1126 of AMD Am79C971 PCnet-FAST and greater chips as before.
1129 The machdep.* sysctls and the adjkerntz utility have been
1130 modified a bit. The new adjkerntz utility uses the new
1131 sysctl names and sysctlbyname() calls, so it may be impossible
1132 to run an old /sbin/adjkerntz utility in single-user mode
1133 with a new kernel. Replace the `adjkerntz -i' step before
1134 `make installworld' with:
1136 /usr/obj/usr/src/sbin/adjkerntz/adjkerntz -i
1138 and proceed as usual with the rest of the installworld-stage
1139 steps. Otherwise, you risk installing binaries with their
1140 timestamp set several hours in the future, especially if
1141 you are running with local time set to GMT+X hours.
1144 The ip6fw utility has been removed. The behavior provided by
1145 ip6fw has been in ipfw2 for a good while and the rc.d scripts
1146 have been updated to deal with it. There are some rules that
1147 might not migrate cleanly. Use rc.firewall6 as a template to
1151 The puc(4) driver has been overhauled. The ebus(4) and sbus(4)
1152 attachments have been removed. Make sure to configure scc(4)
1153 on sparc64. Note also that by default puc(4) will use uart(4)
1154 and not sio(4) for serial ports because interrupt handling has
1155 been optimized for multi-port serial cards and only uart(4)
1156 implements the interface to support it.
1159 The scc(4) driver replaces puc(4) for Serial Communications
1160 Controllers (SCCs) like the Siemens SAB82532 and the Zilog
1161 Z8530. On sparc64, it is advised to add scc(4) to the kernel
1162 configuration to make sure that the serial ports remain
1166 Most world/kernel related NO_* build options changed names.
1167 New knobs have common prefixes WITHOUT_*/WITH_* (modelled
1168 after FreeBSD ports) and should be set in /etc/src.conf
1169 (the src.conf(5) manpage is provided). Full backwards
1170 compatibility is maintained for the time being though it's
1171 highly recommended to start moving old options out of the
1172 system-wide /etc/make.conf file into the new /etc/src.conf
1173 while also properly renaming them. More conversions will
1174 likely follow. Posting to current@:
1176 http://lists.freebsd.org/pipermail/freebsd-current/2006-March/061725.html
1179 The NETSMBCRYPTO kernel option has been retired because its
1180 functionality is always included in NETSMB and smbfs.ko now.
1183 The TDFX_LINUX kernel option was retired and replaced by the
1184 tdfx_linux device. The latter can be loaded as the 3dfx_linux.ko
1185 kernel module. Loading it alone should suffice to get 3dfx support
1186 for Linux apps because it will pull in 3dfx.ko and linux.ko through
1190 The 'audit' group was added to support the new auditing functionality
1191 in the base system. Be sure to follow the directions for updating,
1192 including the requirement to run mergemaster -p.
1195 The kernel ABI to file system modules was changed on i386.
1196 Please make sure that your kernel and modules are in sync.
1199 This actually occured some time ago, but installing the kernel
1200 now also installs a bunch of symbol files for the kernel modules.
1201 This increases the size of /boot/kernel to about 67Mbytes. You
1202 will need twice this if you will eventually back this up to kernel.old
1203 on your next install.
1204 If you have a shortage of room in your root partition, you should add
1205 -DINSTALL_NODEBUG to your make arguments or add INSTALL_NODEBUG="yes"
1206 to your /etc/make.conf.
1209 libc's malloc implementation has been replaced. This change has the
1210 potential to uncover application bugs that previously went unnoticed.
1211 See the malloc(3) manual page for more details.
1214 The generic netgraph(4) cookie has been changed. If you upgrade
1215 kernel passing this point, you also need to upgrade userland
1216 and netgraph(4) utilities like ports/net/mpd or ports/net/mpd4.
1219 si(4)'s device files now contain the unit number.
1220 Uses of {cua,tty}A[0-9a-f] should be replaced by {cua,tty}A0[0-9a-f].
1223 The kernel ABI was mostly destroyed due to a change in the size
1224 of struct lock_object which is nested in other structures such
1225 as mutexes which are nested in all sorts of other structures.
1226 Make sure your kernel and modules are in sync.
1229 The page coloring algorithm in the VM subsystem was converted
1230 from tuning with kernel options to autotuning. Please remove
1231 any PQ_* option except PQ_NOOPT from your kernel config.
1234 The net80211-related tools in the tools/tools/ath directory
1235 have been moved to tools/tools/net80211 and renamed with a
1236 "wlan" prefix. Scripts that use them should be adjusted
1240 Scripts in the local_startup directories (as defined in
1241 /etc/defaults/rc.conf) that have the new rc.d semantics will
1242 now be run as part of the base system rcorder. If there are
1243 errors or problems with one of these local scripts, it could
1244 cause boot problems. If you encounter such problems, boot in
1245 single user mode, remove that script from the */rc.d directory.
1246 Please report the problem to the port's maintainer, and the
1247 freebsd-ports@freebsd.org mailing list.
1250 The nodev mount option was deprecated in RELENG_6 (where it
1251 was a no-op), and is now unsupported. If you have nodev or dev listed
1252 in /etc/fstab, remove it, otherwise it will result in a mount error.
1255 ABI between ipfw(4) and ipfw(8) has been changed. You need
1256 to rebuild ipfw(8) when rebuilding kernel.
1259 rp(4)'s device files now contain the unit number.
1260 Uses of {cua,tty}R[0-9a-f] should be replaced by {cua,tty}R0[0-9a-f].
1263 /etc/rc.d/ppp-user has been renamed to /etc/rc.d/ppp.
1264 Its /etc/rc.conf.d configuration file has been `ppp' from
1265 the beginning, and hence there is no need to touch it.
1268 Now most modules get their build-time options from the kernel
1269 configuration file. A few modules still have fixed options
1270 due to their non-conformant implementation, but they will be
1271 corrected eventually. You may need to review the options of
1272 the modules in use, explicitly specify the non-default options
1273 in the kernel configuration file, and rebuild the kernel and
1277 kern.polling.enable sysctl MIB is now deprecated. Use ifconfig(8)
1278 to turn polling(4) on your interfaces.
1281 The old bridge(4) implementation was retired. The new
1282 if_bridge(4) serves as a full functional replacement.
1285 The ai_addrlen of a struct addrinfo was changed to a socklen_t
1286 to conform to POSIX-2001. This change broke an ABI
1287 compatibility on 64 bit architecture. You have to recompile
1288 userland programs that use getaddrinfo(3) on 64 bit
1292 RELENG_6 branched here.
1295 The pccard_ifconfig rc.conf variable has been removed and a new
1296 variable, ifconfig_DEFAULT has been introduced. Unlike
1297 pccard_ifconfig, ifconfig_DEFAULT applies to ALL interfaces that
1298 do not have ifconfig_ifn entries rather than just those in
1299 removable_interfaces.
1302 Some previous versions of PAM have permitted the use of
1303 non-absolute paths in /etc/pam.conf or /etc/pam.d/* when referring
1304 to third party PAM modules in /usr/local/lib. A change has been
1305 made to require the use of absolute paths in order to avoid
1306 ambiguity and dependence on library path configuration, which may
1307 affect existing configurations.
1310 Major changes to network interface API. All drivers must be
1311 recompiled. Drivers not in the base system will need to be
1312 updated to the new APIs.
1315 Changes were made to kinfo_proc in sys/user.h. Please recompile
1316 userland, or commands like `fstat', `pkill', `ps', `top' and `w'
1317 will not behave correctly.
1319 The API and ABI for hwpmc(4) have changed with the addition
1320 of sampling support. Please recompile lib/libpmc(3) and
1321 usr.sbin/{pmcstat,pmccontrol}.
1324 The OpenBSD dhclient was imported in place of the ISC dhclient
1325 and the network interface configuration scripts were updated
1326 accordingly. If you use DHCP to configure your interfaces, you
1327 must now run devd. Also, DNS updating was lost so you will need
1328 to find a workaround if you use this feature.
1330 The '_dhcp' user was added to support the OpenBSD dhclient. Be
1331 sure to run mergemaster -p (like you are supposed to do every time
1335 if_bridge was added to the tree. This has changed struct ifnet.
1336 Please recompile userland and all network related modules.
1339 The n_net of a struct netent was changed to an uint32_t, and
1340 1st argument of getnetbyaddr() was changed to an uint32_t, to
1341 conform to POSIX-2001. These changes broke an ABI
1342 compatibility on 64 bit architecture. With these changes,
1343 shlib major of libpcap was bumped. You have to recompile
1344 userland programs that use getnetbyaddr(3), getnetbyname(3),
1345 getnetent(3) and/or libpcap on 64 bit architecture.
1348 Kernel parsing of extra options on '#!' first lines of shell
1349 scripts has changed. Lines with multiple options likely will
1350 fail after this date. For full details, please see
1351 http://people.freebsd.org/~gad/Updating-20050528.txt
1354 The packet filter (pf) code has been updated to OpenBSD 3.7
1355 Please note the changed anchor syntax and the fact that
1356 authpf(8) now needs a mounted fdescfs(5) to function.
1359 The NO_MIXED_MODE kernel option has been removed from the i386
1360 amd64 platforms as its use has been superceded by the new local
1361 APIC timer code. Any kernel config files containing this option
1365 The on-disk format of LC_CTYPE files was changed to be machine
1366 independent. Please make sure NOT to use NO_CLEAN buildworld
1367 when crossing this point. Crossing this point also requires
1368 recompile or reinstall of all locale depended packages.
1371 The ifi_epoch member of struct if_data has been changed to
1372 contain the uptime at which the interface was created or the
1373 statistics zeroed rather then the wall clock time because
1374 wallclock time may go backwards. This should have no impact
1375 unless an snmp implementation is using this value (I know of
1376 none at this point.)
1379 The acpi_perf and acpi_throttle drivers are now part of the
1380 acpi(4) main module. They are no longer built separately.
1383 The layout of struct image_params has changed. You have to
1384 recompile all compatibility modules (linux, svr4, etc) for use
1385 with the new kernel.
1388 The p4tcc driver has been merged into cpufreq(4). This makes
1389 "options CPU_ENABLE_TCC" obsolete. Please load cpufreq.ko or
1390 compile in "device cpufreq" to restore this functionality.
1393 The responsibility of recomputing the file system summary of
1394 a SoftUpdates-enabled dirty volume has been transferred to the
1395 background fsck. A rebuild of fsck(8) utility is recommended
1396 if you have updated the kernel.
1398 To get the old behavior (recompute file system summary at mount
1399 time), you can set vfs.ffs.compute_summary_at_mount=1 before
1400 mounting the new volume.
1403 The cpufreq import is complete. As part of this, the sysctls for
1404 acpi(4) throttling have been removed. The power_profile script
1405 has been updated, so you can use performance/economy_cpu_freq in
1406 rc.conf(5) to set AC on/offline cpu frequencies.
1409 NG_VERSION has been increased. Recompiling kernel (or ng_socket.ko)
1410 requires recompiling libnetgraph and userland netgraph utilities.
1413 Support for abbreviated forms of a number of ipfw options is
1414 now deprecated. Warnings are printed to stderr indicating the
1415 correct full form when a match occurs. Some abbreviations may
1416 be supported at a later date based on user feedback. To be
1417 considered for support, abbreviations must be in use prior to
1418 this commit and unlikely to be confused with current key words.
1421 By a popular demand, a lot of NOFOO options were renamed
1422 to NO_FOO (see bsd.compat.mk for a full list). The old
1423 spellings are still supported, but will cause annoying
1424 warnings on stderr. Make sure you upgrade properly (see
1425 the COMMON ITEMS: section later in this file).
1428 Auto-loading of ancillary wlan modules such as wlan_wep has
1429 been temporarily disabled; you need to statically configure
1430 the modules you need into your kernel or explicitly load them
1431 prior to use. Specifically, if you intend to use WEP encryption
1432 with an 802.11 device load/configure wlan_wep; if you want to
1433 use WPA with the ath driver load/configure wlan_tkip, wlan_ccmp,
1434 and wlan_xauth as required.
1437 The behaviour of ppp(8) has changed slightly. If lqr is enabled
1438 (``enable lqr''), older versions would revert to LCP ECHO mode on
1439 negotiation failure. Now, ``enable echo'' is required for this
1440 behaviour. The ppp version number has been bumped to 3.4.2 to
1444 The wlan support has been updated to split the crypto support
1445 into separate modules. For static WEP you must configure the
1446 wlan_wep module in your system or build and install the module
1447 in place where it can be loaded (the kernel will auto-load
1448 the module when a wep key is configured).
1451 The ath driver has been updated to split the tx rate control
1452 algorithm into a separate module. You need to include either
1453 ath_rate_onoe or ath_rate_amrr when configuring the kernel.
1456 Support for systems with an 80386 CPU has been removed. Please
1457 use FreeBSD 5.x or earlier on systems with an 80386.
1460 We have had a hack which would mount the root filesystem
1461 R/W if the device were named 'md*'. As part of the vnode
1462 work I'm doing I have had to remove this hack. People
1463 building systems which use preloaded MD root filesystems
1464 may need to insert a "/sbin/mount -u -o rw /dev/md0 /" in
1465 their /etc/rc scripts.
1468 FreeBSD 5.3 shipped here.
1471 The size of struct tcpcb has changed again due to the removal
1472 of RFC1644 T/TCP. You have to recompile userland programs that
1473 read kmem for tcp sockets directly (netstat, sockstat, etc.)
1476 The size of struct tcpcb has changed. You have to recompile
1477 userland programs that read kmem for tcp sockets directly
1478 (netstat, sockstat, etc.)
1481 RELENG_5 branched here. For older entries, please see updating
1482 in the RELENG_5 branch.
1488 Avoid using make -j when upgrading. From time to time in the
1489 past there have been problems using -j with buildworld and/or
1490 installworld. This is especially true when upgrading between
1491 "distant" versions (eg one that cross a major release boundary
1492 or several minor releases, or when several months have passed
1493 on the -current branch).
1495 Sometimes, obscure build problems are the result of environment
1496 poisoning. This can happen because the make utility reads its
1497 environment when searching for values for global variables.
1498 To run your build attempts in an "environmental clean room",
1499 prefix all make commands with 'env -i '. See the env(1) manual
1500 page for more details.
1502 When upgrading from one major version to another it is generally
1503 best to upgrade to the latest code in the currently installed branch
1504 first, then do an upgrade to the new branch. This is the best-tested
1505 upgrade path, and has the highest probability of being successful.
1506 Please try this approach before reporting problems with a major
1511 If you are updating from a prior version of FreeBSD (even one just
1512 a few days old), you should follow this procedure. It is the most
1513 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
1515 make kernel-toolchain
1516 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE
1517 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE
1519 To test a kernel once
1520 ---------------------
1521 If you just want to boot a kernel once (because you are not sure
1522 if it works, or if you want to boot a known bad kernel to provide
1523 debugging information) run
1524 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
1525 nextboot -k testkernel
1527 To just build a kernel when you know that it won't mess you up
1528 --------------------------------------------------------------
1529 This assumes you are already running a 5.X system. Replace
1530 ${arch} with the architecture of your machine (e.g. "i386",
1531 "alpha", "amd64", "ia64", "pc98", "sparc64", etc).
1533 cd src/sys/${arch}/conf
1534 config KERNEL_NAME_HERE
1535 cd ../compile/KERNEL_NAME_HERE
1540 If this fails, go to the "To build a kernel" section.
1542 To rebuild everything and install it on the current system.
1543 -----------------------------------------------------------
1544 # Note: sometimes if you are running current you gotta do more than
1545 # is listed here if you are upgrading from a really old current.
1547 <make sure you have good level 0 dumps>
1549 make kernel KERNCONF=YOUR_KERNEL_HERE
1551 <reboot in single user> [3]
1559 To cross-install current onto a separate partition
1560 --------------------------------------------------
1561 # In this approach we use a separate partition to hold
1562 # current's root, 'usr', and 'var' directories. A partition
1563 # holding "/", "/usr" and "/var" should be about 2GB in
1566 <make sure you have good level 0 dumps>
1569 make buildkernel KERNCONF=YOUR_KERNEL_HERE
1570 <maybe newfs current's root partition>
1571 <mount current's root partition on directory ${CURRENT_ROOT}>
1572 make installworld DESTDIR=${CURRENT_ROOT}
1573 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
1574 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT}
1575 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd
1576 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
1577 <reboot into current>
1578 <do a "native" rebuild/install as described in the previous section>
1579 <maybe install compatibility libraries from ports/misc/compat*>
1583 To upgrade in-place from 5.x-stable to current
1584 ----------------------------------------------
1585 <make sure you have good level 0 dumps>
1587 make kernel KERNCONF=YOUR_KERNEL_HERE [8]
1589 <reboot in single user> [3]
1596 Make sure that you've read the UPDATING file to understand the
1597 tweaks to various things you need. At this point in the life
1598 cycle of current, things change often and you are on your own
1599 to cope. The defaults can also change, so please read ALL of
1600 the UPDATING entries.
1602 Also, if you are tracking -current, you must be subscribed to
1603 freebsd-current@freebsd.org. Make sure that before you update
1604 your sources that you have read and understood all the recent
1605 messages there. If in doubt, please track -stable which has
1606 much fewer pitfalls.
1608 [1] If you have third party modules, such as vmware, you
1609 should disable them at this point so they don't crash your
1612 [3] From the bootblocks, boot -s, and then do
1617 adjkerntz -i # if CMOS is wall time
1618 Also, when doing a major release upgrade, it is required that
1619 you boot into single user mode to do the installworld.
1621 [4] Note: This step is non-optional. Failure to do this step
1622 can result in a significant reduction in the functionality of the
1623 system. Attempting to do it by hand is not recommended and those
1624 that pursue this avenue should read this file carefully, as well
1625 as the archives of freebsd-current and freebsd-hackers mailing lists
1626 for potential gotchas.
1628 [5] Usually this step is a noop. However, from time to time
1629 you may need to do this if you get unknown user in the following
1630 step. It never hurts to do it all the time. You may need to
1631 install a new mergemaster (cd src/usr.sbin/mergemaster && make
1632 install) after the buildworld before this step if you last updated
1633 from current before 20020224 or from -stable before 20020408.
1635 [8] In order to have a kernel that can run the 4.x binaries
1636 needed to do an installworld, you must include the COMPAT_FREEBSD4
1637 option in your kernel. Failure to do so may leave you with a system
1638 that is hard to boot to recover. A similar kernel option COMPAT_FREEBSD5
1639 is required to run the 5.x binaries on more recent kernels.
1641 Make sure that you merge any new devices from GENERIC since the
1642 last time you updated your kernel config file.
1644 [9] When checking out sources, you must include the -P flag to have
1645 cvs prune empty directories.
1647 If CPUTYPE is defined in your /etc/make.conf, make sure to use the
1648 "?=" instead of the "=" assignment operator, so that buildworld can
1649 override the CPUTYPE if it needs to.
1651 MAKEOBJDIRPREFIX must be defined in an environment variable, and
1652 not on the command line, or in /etc/make.conf. buildworld will
1653 warn if it is improperly defined.
1656 This file contains a list, in reverse chronological order, of major
1657 breakages in tracking -current. Not all things will be listed here,
1658 and it only starts on October 16, 2004. Updating files can found in
1659 previous releases if your system is older than this.
1661 Copyright information:
1663 Copyright 1998-2005 M. Warner Losh. All Rights Reserved.
1665 Redistribution, publication, translation and use, with or without
1666 modification, in full or in part, in any form or format of this
1667 document are permitted without further permission from the author.
1669 THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR
1670 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
1671 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
1672 DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT,
1673 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
1674 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
1675 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1676 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
1677 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
1678 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1679 POSSIBILITY OF SUCH DAMAGE.
1681 If you find this document useful, and you want to, you may buy the
1684 Contact Warner Losh if you have any questions about your use of