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 A new compression method (lz4) has been merged. Please refer to
20 zpool-features(7) for more information.
22 Please refer to the "ZFS notes" section of this file for information
23 on upgrading boot ZFS pools.
26 A new version of ZFS (pool version 5000) has been merged to 8-STABLE.
27 Starting with this version the old system of ZFS pool versioning
28 is superseded by "feature flags". This concept enables forward
29 compatibility against certain future changes in functionality of ZFS
30 pools. The first two read-only compatible "feature flags" for ZFS
31 pools are "com.delphix:async_destroy" and "com.delphix:empty_bpobj".
32 For more information read the new zpool-features(7) manual page.
33 Please refer to the "ZFS notes" section of this file for information
34 on upgrading boot ZFS pools.
37 WITH_CTF can now be specified in src.conf (not recommended, there
38 are some problems with static executables), make.conf (would also
39 affect ports which do not use GNU make and do not override the
40 compile targets) or in the kernel config (via "makeoptions
42 When WITH_CTF was specified there before this was silently ignored,
43 so make sure that WITH_CTF is not used in places which could lead
47 The random(4) support for the VIA hardware random number
48 generator (`PADLOCK') is no longer enabled unconditionally.
49 Add the PADLOCK_RNG option in the custom kernel config if
50 needed. The GENERIC kernels on i386 and amd64 do include the
51 option, so the change only affects the custom kernel
55 The sparc64 ZFS loader has been changed to no longer try to auto-
56 detect ZFS providers based on diskN aliases but now requires these
57 to be explicitly listed in the OFW boot-device environment variable.
63 A new VOP_ADVISE() was added to support posix_fadvise(2). All
64 filesystem modules must be recompiled.
67 A new VOP_ALLOCATE() was added to support posix_fallocate(2). All
68 filesystem modules must be recompiled.
71 The broken amd(4) driver has been replaced with esp(4) in the amd64,
72 i386 and pc98 GENERIC kernel configuration files.
75 A new version of ZFS (version 28) has been merged.
76 This version does not depend on a python library and the
77 sysutils/py-zfs port is not used anymore.
78 For upgrading your boot pool, please read "ZFS notes"
79 in the COMMON ITEMS: section later in this file.
82 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868
83 compliant, and will now use half of hash for authentication.
84 This will break interoperability with all stacks (including all
85 older FreeBSD versions) who implement
86 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for
88 The only workaround with such peers is to use another HMAC
89 algorithm for IPsec ("phase 2") authentication.
95 New version of minidump format for amd64 architecture was
96 introduced in r215872. To analyze vmcore files produced by
97 kernels at or after this version you will need updated userland,
98 libkvm actually, that is able to handle the new version.
101 A workaround for a fixed ld bug has been removed in kernel code,
102 so make sure that your system ld is built from sources after
103 revision 211583 from 2010-08-21 (r210245 from 2010-07-19 if
104 building stable/8 kernel on head, r211584 from 2010-08-21 for
105 stable/7). A symptom of incorrect ld version is
106 different addresses for set_pcpu section and __start_set_pcpu
107 symbol in kernel and/or modules.
110 A new version of ZFS (version 15) has been merged.
111 This version uses a python library for the following subcommands:
112 zfs allow, zfs unallow, zfs groupspace, zfs userspace.
113 For full functionality of these commands the following port must
114 be installed: sysutils/py-zfs
120 The config(8) command has been updated to maintain compatibility
121 with config files from 8.0-RELEASE. You will need a new version
122 of config to build kernels (this version can be used from 8.0-RELEASE
123 forward). The buildworld target will generate it, so following
124 the instructions in this file for updating will work glitch-free.
125 Merely doing a make buildkernel without first doing a make buildworld
126 (or kernel-toolchain), or attempting to build a kernel using
127 traidtional methods will generate a config version warning, indicating
131 The rc.firewall and rc.firewall6 were unified, and
132 rc.firewall6 and rc.d/ip6fw were removed.
133 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc
134 variables are obsoleted. Instead, the following new rc
135 variables are added to rc.d/ipfw:
137 firewall_client_net_ipv6, firewall_simple_iif_ipv6,
138 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6,
139 firewall_simple_onet_ipv6
141 The meanings correspond to the relevant IPv4 variables.
144 COMPAT_IA32 has been added as an alias for COMPAT_FREEBSD32. A new
145 version of config(8) is required. The error message when you hit this
146 condition is confusing (COMPAT_FREEBSD32 duplicate option), when it
147 should really say "your config is too old to compile this new kernel."
150 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32
151 to allow 32-bit compatibility on non-x86 platforms. All kernel
152 configurations on amd64 and ia64 platforms using these options must
153 be modified accordingly.
156 Introduce the kernel thread "deadlock resolver" (which can be enabled
157 via the DEADLKRES option, see NOTES for more details) and the
158 sleepq_type() function for sleepqueues.
164 802.11s D3.03 support was committed. This is incompatible with
165 the previous code, which was based on D3.0.
168 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for
169 mount(8) and -a option for df(1) to see them.
172 Remove the option STOP_NMI. The default action is now to use NMI
173 only for KDB via the newly introduced function stop_cpus_hard()
174 and maintain stop_cpus() to just use a normal IPI_STOP on ia32
181 Bump the shared library version numbers for all libraries that
182 do not use symbol versioning as part of the 8.0-RELEASE cycle.
183 Bump __FreeBSD_version to 800105.
186 Due to changes in the implementation of virtual network stack
187 support, all network-related kernel modules must be recompiled.
188 As this change breaks the ABI, bump __FreeBSD_version to 800104.
191 The TOE interface to the TCP syncache has been modified to remove struct
192 tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. The
193 cxgb driver is the only TOE consumer affected by this change, and needs
194 to be recompiled along with the kernel. As this change breaks the ABI,
195 bump __FreeBSD_version to 800103.
198 Padding has been added to struct tcpcb, sackhint and tcpstat in
199 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst
200 maintainig the ABI. However, this change breaks the ABI, so bump
201 __FreeBSD_version to 800102. User space tools that rely on the size of
202 any of these structs (e.g. sockstat) need to be recompiled.
205 The NFS_LEGACYRPC option has been removed along with the old
206 kernel RPC implementation that this option selected. Kernel
207 configurations may need to be adjusted.
210 The network interface device nodes at /dev/net/<interface> have
211 been removed. All ioctl operations can be performed the normal
212 way using routing sockets. The kqueue functionality can
213 generally be replaced with routing sockets.
216 The documentation from the FreeBSD Documentation Project
217 (Handbook, FAQ, etc.) is now installed via packages by
218 sysinstall(8) and under the /usr/local/share/doc/freebsd
219 directory instead of /usr/share/doc.
222 The ABI of various structures related to the SYSV IPC API have
223 been changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43
224 kernel options now all require COMPAT_FREEBSD7.
225 Bump __FreeBSD_version to 800100.
228 Layout of struct vnet has changed as routing related variables
229 were moved to their own Vimage module. Modules need to be
230 recompiled. Bump __FreeBSD_version to 800099.
233 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023
234 and 1024 respectively. As long as no more than 16 groups per
235 process are used, no changes should be visible. When more
236 than 16 groups are used, old binaries may fail if they call
237 getgroups() or getgrouplist() with statically sized storage.
238 Recompiling will work around this, but applications should be
239 modified to use dynamically allocated storage for group arrays
240 as POSIX.1-2008 does not cap an implementation's number of
241 supported groups at NGROUPS_MAX+1 as previous versions did.
243 NFS and portalfs mounts may also be affected as the list of
244 groups is truncated to 16. Users of NFS who use more than 16
245 groups, should take care that negative group permissions are not
246 used on the exported file systems as they will not be reliable
247 unless a GSSAPI based authentication method is used.
250 The compiling option ADAPTIVE_LOCKMGRS has been introduced.
251 This option compiles in the support for adaptive spinning for lockmgrs
252 which want to enable it. The lockinit() function now accepts the
253 flag LK_ADAPTIVE in order to make the lock object subject to
254 adaptive spinning when both held in write and read mode.
257 The layout of the structure returned by IEEE80211_IOC_STA_INFO
258 has changed. User applications that use this ioctl need to be
262 The layout of struct thread has changed. Kernel and modules
266 The layout of structs ifnet, domain, protosw and vnet_net has
267 changed. Kernel modules need to be rebuilt.
268 Bump __FreeBSD_version to 800097.
271 window(1) has been removed from the base system. It can now be
272 installed from ports. The port is called misc/window.
275 The way we are storing and accessing `routing table' entries
276 has changed. Programs reading the FIB, like netstat, need to
280 A new netisr implementation has been added for FreeBSD 8. Network
281 file system modules, such as igmp, ipdivert, and others, should be
283 Bump __FreeBSD_version to 800096.
286 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose
290 Add VOP_ACCESSX(9). File system modules need to be rebuilt.
291 Bump __FreeBSD_version to 800094.
294 Add mnt_xflag field to 'struct mount'. File system modules
296 Bump __FreeBSD_version to 800093.
299 The compiling option ADAPTIVE_SX has been retired while it has been
300 introduced the option NO_ADAPTIVE_SX which handles the reversed logic.
301 The KPI for sx_init_flags() changes as accepting flags:
302 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag
303 has been introduced in order to handle the reversed logic.
304 Bump __FreeBSD_version to 800092.
307 Add support for hierarchical jails. Remove global securelevel.
308 Bump __FreeBSD_version to 800091.
311 The layout of struct vnet_net has changed, therefore modules
313 Bump __FreeBSD_version to 800090.
316 The newly imported zic(8) produces a new format in the
317 output. Please run tzsetup(8) to install the newly created
318 data to /etc/localtime.
321 The sysctl tree for the usb stack has renamed from hw.usb2.* to
322 hw.usb.* and is now consistent again with previous releases.
325 802.11 monitor mode support was revised and driver api's
326 were changed. Drivers dependent on net80211 now support
327 DLT_IEEE802_11_RADIO instead of DLT_IEEE802_11. No
328 user-visible data structures were changed but applications
329 that use DLT_IEEE802_11 may require changes.
330 Bump __FreeBSD_version to 800088.
333 The layout of the following structs has changed: sysctl_oid,
334 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet,
335 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or
336 panics may be experienced. World rebuild is required for
337 correctly checking networking state from userland.
338 Bump __FreeBSD_version to 800085.
341 MLDv2 and Source-Specific Multicast (SSM) have been merged
342 to the IPv6 stack. VIMAGE hooks are in but not yet used.
343 The implementation of SSM within FreeBSD's IPv6 stack closely
344 follows the IPv4 implementation.
346 For kernel developers:
348 * The most important changes are that the ip6_output() and
349 ip6_input() paths no longer take the IN6_MULTI_LOCK,
350 and this lock has been downgraded to a non-recursive mutex.
352 * As with the changes to the IPv4 stack to support SSM, filtering
353 of inbound multicast traffic must now be performed by transport
354 protocols within the IPv6 stack. This does not apply to TCP and
355 SCTP, however, it does apply to UDP in IPv6 and raw IPv6.
357 * The KPIs used by IPv6 multicast are similar to those used by
358 the IPv4 stack, with the following differences:
359 * im6o_mc_filter() is analogous to imo_multicast_filter().
360 * The legacy KAME entry points in6_joingroup and in6_leavegroup()
361 are shimmed to in6_mc_join() and in6_mc_leave() respectively.
362 * IN6_LOOKUP_MULTI() has been deprecated and removed.
363 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs
364 for MLDv1 have an additional 'timer' argument which is used to
365 jitter the initial membership report for the solicited-node
366 multicast membership on-link.
367 * This is not strictly needed for MLDv2, which already jitters
368 its report transmissions. However, the 'timer' argument is
369 preserved in case MLDv1 is active on the interface.
371 * The KAME linked-list based IPv6 membership implementation has
372 been refactored to use a vector similar to that used by the IPv4
374 Code which maintains a list of its own multicast memberships
375 internally, e.g. carp, has been updated to reflect the new
378 * There is a known Lock Order Reversal (LOR) due to in6_setscope()
379 acquiring the IF_AFDATA_LOCK and being called within ip6_output().
380 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an
381 implementation constraint which needs to be addressed in HEAD.
383 For application developers:
385 * The changes are broadly similar to those made for the IPv4
388 * The use of IPv4 and IPv6 multicast socket options on the same
389 socket, using mapped addresses, HAS NOT been tested or supported.
391 * There are a number of issues with the implementation of various
392 IPv6 multicast APIs which need to be resolved in the API surface
393 before the implementation is fully compatible with KAME userland
394 use, and these are mostly to do with interface index treatment.
396 * The literature available discusses the use of either the delta / ASM
397 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API
398 using setsourcefilter(3)/getsourcefilter(3). For more information
399 please refer to RFC 3768, 'Socket Interface Extensions for
400 Multicast Source Filters'.
402 * Applications which use the published RFC 3678 APIs should be fine.
404 For systems administrators:
406 * The mtest(8) utility has been refactored to support IPv6, in
407 addition to IPv4. Interface addresses are no longer accepted
408 as arguments, their names must be used instead. The utility
409 will map the interface name to its first IPv4 address as
410 returned by getifaddrs(3).
412 * The ifmcstat(8) utility has also been updated to print the MLDv2
413 endpoint state and source filter lists via sysctl(3).
415 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable
416 loopback of IPv6 multicast datagrams by default; it defaults to 1
417 to preserve the existing behaviour. Disabling multicast loopback is
418 recommended for optimal system performance.
420 * The IPv6 MROUTING code has been changed to examine this sysctl
421 instead of attempting to perform a group lookup before looping
422 back forwarded datagrams.
424 Bump __FreeBSD_version to 800084.
427 Implement low-level Bluetooth HCI API.
428 Bump __FreeBSD_version to 800083.
431 The layout of struct malloc_type, used by modules to register new
432 memory allocation types, has changed. Most modules will need to
433 be rebuilt or panics may be experienced.
434 Bump __FreeBSD_version to 800081.
437 Anticipate overflowing inp_flags - add inp_flags2.
438 This changes most offsets in inpcb, so checking v4 connection
439 state will require a world rebuild.
440 Bump __FreeBSD_version to 800080.
443 Add an llentry to struct route and struct route_in6. Modules
444 embedding a struct route will need to be recompiled.
445 Bump __FreeBSD_version to 800079.
448 The size of rt_metrics_lite and by extension rtentry has changed.
449 Networking administration apps will need to be recompiled.
450 The route command now supports show as an alias for get, weighting
451 of routes, sticky and nostick flags to alter the behavior of stateful
453 Bump __FreeBSD_version to 800078.
456 Do not use Giant for kbdmux(4) locking. This is wrong and
457 apparently causing more problems than it solves. This will
458 re-open the issue where interrupt handlers may race with
459 kbdmux(4) in polling mode. Typical symptoms include (but
460 not limited to) duplicated and/or missing characters when
461 low level console functions (such as gets) are used while
462 interrupts are enabled (for example geli password prompt,
463 mountroot prompt etc.). Disabling kbdmux(4) may help.
466 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed;
467 kernel modules referencing any of the above need to be recompiled.
468 Bump __FreeBSD_version to 800075.
471 GEOM_PART has become the default partition slicer for storage devices,
472 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It
473 introduces some changes:
475 MSDOS/EBR: the devices created from MSDOS extended partition entries
476 (EBR) can be named differently than with GEOM_MBR and are now symlinks
477 to devices with offset-based names. fstabs may need to be modified.
479 BSD: the "geometry does not match label" warning is harmless in most
480 cases but it points to problems in file system misalignment with
481 disk geometry. The "c" partition is now implicit, covers the whole
482 top-level drive and cannot be (mis)used by users.
484 General: Kernel dumps are now not allowed to be written to devices
485 whose partition types indicate they are meant to be used for file
486 systems (or, in case of MSDOS partitions, as something else than
489 Most of these changes date approximately from 200812.
492 The uscanner(4) driver has been removed from the kernel. This follows
493 Linux removing theirs in 2.6 and making libusb the default interface
497 The multicast forwarding code has been cleaned up. netstat(1)
498 only relies on KVM now for printing bandwidth upcall meters.
499 The IPv4 and IPv6 modules are split into ip_mroute_mod and
500 ip6_mroute_mod respectively. The config(5) options for statically
501 compiling this code remain the same, i.e. 'options MROUTING'.
504 Support for the IFF_NEEDSGIANT network interface flag has been
505 removed, which means that non-MPSAFE network device drivers are no
506 longer supported. In particular, if_ar, if_sr, and network device
507 drivers from the old (legacy) USB stack can no longer be built or
511 POSIX.1 Native Language Support (NLS) has been enabled in libc and
512 a bunch of new language catalog files have also been added.
513 This means that some common libc messages are now localized and
514 they depend on the LC_MESSAGES environmental variable.
517 The k8temp(4) driver has been renamed to amdtemp(4) since
518 support for K10 and K11 CPU families was added.
521 IGMPv3 and Source-Specific Multicast (SSM) have been merged
522 to the IPv4 stack. VIMAGE hooks are in but not yet used.
524 For kernel developers, the most important changes are that the
525 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(),
526 and this lock has been downgraded to a non-recursive mutex.
528 Transport protocols (UDP, Raw IP) are now responsible for filtering
529 inbound multicast traffic according to group membership and source
530 filters. The imo_multicast_filter() KPI exists for this purpose.
531 Transports which do not use multicast (SCTP, TCP) already reject
532 multicast by default. Forwarding and receive performance may improve
533 as a mutex acquisition is no longer needed in the ip_input()
534 low-level input path. in_addmulti() and in_delmulti() are shimmed
535 to new KPIs which exist to support SSM in-kernel.
537 For application developers, it is recommended that loopback of
538 multicast datagrams be disabled for best performance, as this
539 will still cause the lock to be taken for each looped-back
540 datagram transmission. The net.inet.ip.mcast.loop sysctl may
541 be tuned to 0 to disable loopback by default; it defaults to 1
542 to preserve the existing behaviour.
544 For systems administrators, to obtain best performance with
545 multicast reception and multiple groups, it is always recommended
546 that a card with a suitably precise hash filter is used. Hash
547 collisions will still result in the lock being taken within the
548 transport protocol input path to check group membership.
550 If deploying FreeBSD in an environment with IGMP snooping switches,
551 it is recommended that the net.inet.igmp.sendlocal sysctl remain
552 enabled; this forces 224.0.0.0/24 group membership to be announced
555 The size of 'struct igmpstat' has changed; netstat needs to be
556 recompiled to reflect this.
557 Bump __FreeBSD_version to 800070.
560 libusb20.so.1 is now installed as libusb.so.1 and the ports system
561 updated to use it. This requires a buildworld/installworld in order to
562 update the library and dependencies (usbconfig, etc). Its advisable to
563 rebuild all ports which uses libusb. More specific directions are given
564 in the ports collection UPDATING file. Any /etc/libmap.conf entries for
565 libusb are no longer required and can be removed.
568 A workaround is committed to allow the creation of System V shared
569 memory segment of size > 2 GB on the 64-bit architectures.
570 Due to a limitation of the existing ABI, the shm_segsz member
571 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is
572 wrong for large segments. Note that limits must be explicitly
573 raised to allow such segments to be created.
576 The layout of struct ifnet has changed, requiring a rebuild of all
577 network device driver modules.
580 The /dev handling for the new USB stack has changed, a
581 buildworld/installworld is required for libusb20.
584 The new USB2 stack has now been permanently moved in and all kernel and
585 module names reverted to their previous values (eg, usb, ehci, ohci,
586 ums, ...). The old usb stack can be compiled in by prefixing the name
587 with the letter 'o', the old usb modules have been removed.
588 Updating entry 20090216 for xorg and 20090215 for libmap may still
592 The rc.conf(5) option if_up_delay has been renamed to
593 defaultroute_delay to better reflect its purpose. If you have
594 customized this setting in /etc/rc.conf you need to update it to
598 xorg 7.4 wants to configure its input devices via hald which does not
599 yet work with USB2. If the keyboard/mouse does not work in xorg then
601 Option "AllowEmptyInput" "off"
602 to your ServerLayout section. This will cause X to use the configured
603 kbd and mouse sections from your xorg.conf.
606 The GENERIC kernels for all architectures now default to the new USB2
607 stack. No kernel config options or code have been removed so if a
608 problem arises please report it and optionally revert to the old USB
609 stack. If you are loading USB kernel modules or have a custom kernel
610 that includes GENERIC then ensure that usb names are also changed over,
611 eg uftdi -> usb2_serial_ftdi.
613 Older programs linked against the ports libusb 0.1 need to be
614 redirected to the new stack's libusb20. /etc/libmap.conf can
616 # Map old usb library to new one for usb2 stack
617 libusb-0.1.so.8 libusb20.so.1
620 All USB ethernet devices now attach as interfaces under the name ueN
621 (eg. ue0). This is to provide a predictable name as vendors often
622 change usb chipsets in a product without notice.
625 The ichsmb(4) driver has been changed to require SMBus slave
626 addresses be left-justified (xxxxxxx0b) rather than right-justified.
627 All of the other SMBus controller drivers require left-justified
628 slave addresses, so this change makes all the drivers provide the
632 INET6 statistics (struct ip6stat) was updated.
633 netstat(1) needs to be recompiled.
636 NTFS has been removed from GENERIC kernel on amd64 to match
637 GENERIC on i386. Should not cause any issues since mount_ntfs(8)
638 will load ntfs.ko module automatically when NTFS support is
639 actually needed, unless ntfs.ko is not installed or security
640 level prohibits loading kernel modules. If either is the case,
641 "options NTFS" has to be added into kernel config.
644 TCP Appropriate Byte Counting (RFC 3465) support added to kernel.
645 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to
646 800061. User space tools that rely on the size of struct tcpcb in
647 tcp_var.h (e.g. sockstat) need to be recompiled.
650 ng_tty(4) module updated to match the new TTY subsystem.
651 Due to API change, user-level applications must be updated.
652 New API support added to mpd5 CVS and expected to be present
653 in next mpd5.3 release.
656 With __FreeBSD_version 800060 the makefs tool is part of
657 the base system (it was a port).
660 The afdata and ifnet locks have been changed from mutexes to
661 rwlocks, network modules will need to be re-compiled.
664 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite.
665 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated.
666 The new code reduced struct rtentry{} by 16 bytes on 32-bit
667 architecture and 40 bytes on 64-bit architecture. The userland
668 applications "arp" and "ndp" have been updated accordingly.
669 The output from "netstat -r" shows only routing entries and
670 none of the L2 information.
673 __FreeBSD_version 800057 marks the switchover from the
674 binary ath hal to source code. Users must add the line:
676 options AH_SUPPORT_AR5416
678 to their kernel config files when specifying:
682 The ath_hal module no longer exists; the code is now compiled
683 together with the driver in the ath module. It is now
684 possible to tailor chip support (i.e. reduce the set of chips
685 and thereby the code size); consult ath_hal(4) for details.
688 __FreeBSD_version 800054 adds memory barriers to
689 <machine/atomic.h>, new interfaces to ifnet to facilitate
690 multiple hardware transmit queues for cards that support
691 them, and a lock-less ring-buffer implementation to
692 enable drivers to more efficiently manage queueing of
696 A new version of ZFS (version 13) has been merged to -HEAD.
697 This version has zpool attribute "listsnapshots" off by
698 default, which means "zfs list" does not show snapshots,
699 and is the same as Solaris behavior.
702 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled.
705 The uhci, ohci, ehci and slhci USB Host controller drivers have
706 been put into separate modules. If you load the usb module
707 separately through loader.conf you will need to load the
708 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0
709 controller add the following to loader.conf:
715 The ABI used by the PMC toolset has changed. Please keep
716 userland (libpmc(3)) and the kernel module (hwpmc(4)) in
720 atapci kernel module now includes only generic PCI ATA
721 driver. AHCI driver moved to ataahci kernel module.
722 All vendor-specific code moved into separate kernel modules:
723 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek,
724 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron,
725 atamarvell, atamicron, atanational, atanetcell, atanvidia,
726 atapromise, ataserverworks, atasiliconimage, atasis, atavia
729 The TTY subsystem of the kernel has been replaced by a new
730 implementation, which provides better scalability and an
731 improved driver model. Most common drivers have been migrated to
732 the new TTY subsystem, while others have not. The following
733 drivers have not yet been ported to the new TTY layer:
736 cy, digi, rc, rp, sio
742 ng_h4, ng_tty, ppp, sl, snp
744 Adding these drivers to your kernel configuration file shall
745 cause compilation to fail.
748 ntpd has been upgraded to 4.2.4p5.
751 OpenSSH has been upgraded to 5.1p1.
753 For many years, FreeBSD's version of OpenSSH preferred DSA
754 over RSA for host and user authentication keys. With this
755 upgrade, we've switched to the vendor's default of RSA over
756 DSA. This may cause upgraded clients to warn about unknown
757 host keys even for previously known hosts. Users should
758 follow the usual procedure for verifying host keys before
759 accepting the RSA key.
761 This can be circumvented by setting the "HostKeyAlgorithms"
762 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh
765 Please note that the sequence of keys offered for
766 authentication has been changed as well. You may want to
767 specify IdentityFile in a different order to revert this
771 The sio(4) driver has been removed from the i386 and amd64
772 kernel configuration files. This means uart(4) is now the
773 default serial port driver on those platforms as well.
775 To prevent collisions with the sio(4) driver, the uart(4) driver
776 uses different names for its device nodes. This means the
777 onboard serial port will now most likely be called "ttyu0"
778 instead of "ttyd0". You may need to reconfigure applications to
779 use the new device names.
781 When using the serial port as a boot console, be sure to update
782 /boot/device.hints and /etc/ttys before booting the new kernel.
783 If you forget to do so, you can still manually specify the hints
784 at the loader prompt:
786 set hint.uart.0.at="isa"
787 set hint.uart.0.port="0x3F8"
788 set hint.uart.0.flags="0x10"
789 set hint.uart.0.irq="4"
793 The gpt(8) utility has been removed. Use gpart(8) to partition
797 The version that Linuxulator emulates was changed from 2.4.2
798 to 2.6.16. If you experience any problems with Linux binaries
799 please try to set sysctl compat.linux.osrelease to 2.4.2 and
800 if it fixes the problem contact emulation mailing list.
803 ISDN4BSD (I4B) was removed from the src tree. You may need to
804 update a your kernel configuration and remove relevant entries.
807 I have checked in code to support multiple routing tables.
808 See the man pages setfib(1) and setfib(2).
809 This is a hopefully backwards compatible version,
810 but to make use of it you need to compile your kernel
811 with options ROUTETABLES=2 (or more up to 16).
814 The 802.11 wireless support was redone to enable multi-bss
815 operation on devices that are capable. The underlying device
816 is no longer used directly but instead wlanX devices are
817 cloned with ifconfig. This requires changes to rc.conf files.
819 ifconfig_ath0="WPA DHCP"
822 ifconfig_wlan0="WPA DHCP"
823 see rc.conf(5) for more details. In addition, mergemaster of
824 /etc/rc.d is highly recommended. Simultaneous update of userland
825 and kernel wouldn't hurt either.
827 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta
828 modules were merged into the base wlan module. All references
829 to these modules (e.g. in kernel config files) must be removed.
832 psm(4) has gained write(2) support in native operation level.
833 Arbitrary commands can be written to /dev/psm%d and status can
834 be read back from it. Therefore, an application is responsible
835 for status validation and error recovery. It is a no-op in
836 other operation levels.
839 Support for KSE threading has been removed from the kernel. To
840 run legacy applications linked against KSE libmap.conf may
841 be used. The following libmap.conf may be used to ensure
842 compatibility with any prior release:
844 libpthread.so.1 libthr.so.1
845 libpthread.so.2 libthr.so.2
846 libkse.so.3 libthr.so.3
849 The layout of struct vmspace has changed. This affects libkvm
850 and any executables that link against libkvm and use the
851 kvm_getprocs() function. In particular, but not exclusively,
852 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1).
853 The effects are minimal, but it's advisable to upgrade world
857 The latest em driver no longer has support in it for the
858 82575 adapter, this is now moved to the igb driver. The
859 split was done to make new features that are incompatible
860 with older hardware easier to do.
863 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4),
864 likewise the kernel option is now GEOM_LINUX_LVM.
867 The default NFS mount mode has changed from UDP to TCP for
868 increased reliability. If you rely on (insecurely) NFS
869 mounting across a firewall you may need to update your
873 Belatedly note the addition of m_collapse for compacting
877 The fts(3) structures have been changed to use adequate
878 integer types for their members and so to be able to cope
879 with huge file trees. The old fts(3) ABI is preserved
880 through symbol versioning in libc, so third-party binaries
881 using fts(3) should still work, although they will not take
882 advantage of the extended types. At the same time, some
883 third-party software might fail to build after this change
884 due to unportable assumptions made in its source code about
885 fts(3) structure members. Such software should be fixed
886 by its vendor or, in the worst case, in the ports tree.
887 FreeBSD_version 800015 marks this change for the unlikely
888 case that a portable fix is impossible.
891 To upgrade to -current after this date, you must be running
892 FreeBSD not older than 6.0-RELEASE. Upgrading to -current
893 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems.
896 The ADAPTIVE_GIANT kernel option has been retired because its
897 functionality is the default now.
900 The AT keyboard emulation of sunkbd(4) has been turned on
901 by default. In order to make the special symbols of the Sun
902 keyboards driven by sunkbd(4) work under X these now have
903 to be configured the same way as Sun USB keyboards driven
904 by ukbd(4) (which also does AT keyboard emulation), f.e.:
906 Option "XkbLayout" "us"
907 Option "XkbRules" "xorg"
908 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us"
911 It has been decided that it is desirable to provide ABI
912 backwards compatibility to the FreeBSD 4/5/6 versions of the
913 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was
914 broken with the introduction of PCI domain support (see the
915 20070930 entry). Unfortunately, this required the ABI of
916 PCIOCGETCONF to be broken again in order to be able to
917 provide backwards compatibility to the old version of that
918 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled
919 again. As for prominent ports this affects neither pciutils
920 nor xorg-server this time, the hal port needs to be rebuilt
924 The misnamed kthread_create() and friends have been renamed
925 to kproc_create() etc. Many of the callers already
927 I will return kthread_create() and friends in a while
928 with implementations that actually create threads, not procs.
929 Renaming corresponds with version 800002.
935 Setting WITHOUT_LIBPTHREAD now means WITHOUT_LIBKSE and
936 WITHOUT_LIBTHR are set.
939 The PCI code has been made aware of PCI domains. This means that
940 the location strings as used by pciconf(8) etc are now in the
941 following format: pci<domain>:<bus>:<device>[:<function>]. It
942 also means that consumers of <sys/pciio.h> potentially need to
943 be recompiled; this includes the hal and xorg-server ports.
946 The caching daemon (cached) was renamed to nscd. nscd.conf
947 configuration file should be used instead of cached.conf and
948 nscd_enable, nscd_pidfile and nscd_flags options should be used
949 instead of cached_enable, cached_pidfile and cached_flags in
953 The getfacl(1) utility now prints owning user and group name
954 instead of owning uid and gid in the three line comment header.
955 This is the same behavior as getfacl(1) on Solaris and Linux.
958 The new IPsec code is now compiled in using the IPSEC option. The
959 IPSEC option now requires "device crypto" be defined in your kernel
960 configuration. The FAST_IPSEC kernel option is now deprecated.
963 The packet filter (pf) code has been updated to OpenBSD 4.1 Please
964 note the changed syntax - keep state is now on by default. Also
965 note the fact that ftp-proxy(8) has been changed from bottom up and
966 has been moved from libexec to usr/sbin. Changes in the ALTQ
967 handling also affect users of IPFW's ALTQ capabilities.
970 Remove KAME IPsec in favor of FAST_IPSEC, which is now the
971 only IPsec supported by FreeBSD. The new IPsec stack
972 supports both IPv4 and IPv6. The kernel option will change
973 after the code changes have settled in. For now the kernel
974 option IPSEC is deprecated and FAST_IPSEC is the only option, that
975 will change after some settling time.
978 The wicontrol(8) utility has been removed from the base system. wi(4)
979 cards should be configured using ifconfig(8), see the man page for more
983 The i386/amd64 GENERIC kernel now defaults to the nfe(4) driver
984 instead of the nve(4) driver. Please update your configuration
988 By default, /etc/rc.d/sendmail no longer rebuilds the aliases
989 database if it is missing or older than the aliases file. If
990 desired, set the new rc.conf option sendmail_rebuild_aliases
991 to "YES" to restore that functionality.
994 The IPv4 multicast socket code has been considerably modified, and
995 moved to the file sys/netinet/in_mcast.c. Initial support for the
996 RFC 3678 Source-Specific Multicast Socket API has been added to
997 the IPv4 network stack.
999 Strict multicast and broadcast reception is now the default for
1000 UDP/IPv4 sockets; the net.inet.udp.strict_mcast_mship sysctl variable
1001 has now been removed.
1003 The RFC 1724 hack for interface selection has been removed; the use
1004 of the Linux-derived ip_mreqn structure with IP_MULTICAST_IF has
1005 been added to replace it. Consumers such as routed will soon be
1006 updated to reflect this.
1008 These changes affect users who are running routed(8) or rdisc(8)
1009 from the FreeBSD base system on point-to-point or unnumbered
1013 The net80211 layer has changed significantly and all wireless
1014 drivers that depend on it need to be recompiled. Further these
1015 changes require that any program that interacts with the wireless
1016 support in the kernel be recompiled; this includes: ifconfig,
1017 wpa_supplicant, hostapd, and wlanstats. Users must also, for
1018 the moment, kldload the wlan_scan_sta and/or wlan_scan_ap modules
1019 if they use modules for wireless support. These modules implement
1020 scanning support for station and ap modes, respectively. Failure
1021 to load the appropriate module before marking a wireless interface
1022 up will result in a message to the console and the device not
1026 The pam_nologin(8) module ceases to provide an authentication
1027 function and starts providing an account management function.
1028 Consequent changes to /etc/pam.d should be brought in using
1029 mergemaster(8). Third-party files in /usr/local/etc/pam.d may
1030 need manual editing as follows. Locate this line (or similar):
1032 auth required pam_nologin.so no_warn
1034 and change it according to this example:
1036 account required pam_nologin.so no_warn
1038 That is, the first word needs to be changed from "auth" to
1039 "account". The new line can be moved to the account section
1040 within the file for clarity. Not updating pam.conf(5) files
1041 will result in nologin(5) ignored by the respective services.
1044 The ether_ioctl() function has been synchronized with ioctl(2)
1045 and ifnet.if_ioctl. Due to that, the size of one of its arguments
1046 has changed on 64-bit architectures. All kernel modules using
1047 ether_ioctl() need to be rebuilt on such architectures.
1050 Improved INCLUDE_CONFIG_FILE support has been introduced to the
1051 config(8) utility. In order to take advantage of this new
1052 functionality, you are expected to recompile and install
1053 src/usr.sbin/config. If you don't rebuild config(8), and your
1054 kernel configuration depends on INCLUDE_CONFIG_FILE, the kernel
1055 build will be broken because of a missing "kernconfstring"
1059 Symbol versioning is enabled by default. To disable it, use
1060 option WITHOUT_SYMVER. It is not advisable to attempt to
1061 disable symbol versioning once it is enabled; your installworld
1062 will break because a symbol version-less libc will get installed
1063 before the install tools. As a result, the old install tools,
1064 which previously had symbol dependencies to FBSD_1.0, will fail
1065 because the freshly installed libc will not have them.
1067 The default threading library (providing "libpthread") has been
1068 changed to libthr. If you wish to have libkse as your default,
1069 use option DEFAULT_THREAD_LIB=libkse for the buildworld.
1072 The ABI breakage in sendmail(8)'s libmilter has been repaired
1073 so it is no longer necessary to recompile mail filters (aka,
1074 milters). If you recompiled mail filters after the 20070408
1075 note, it is not necessary to recompile them again.
1078 The new trunk(4) driver has been renamed to lagg(4) as it better
1079 reflects its purpose. ifconfig will need to be recompiled.
1082 sendmail(8) has been updated to version 8.14.1. Mail filters
1083 (aka, milters) compiled against the libmilter included in the
1084 base operating system should be recompiled.
1087 Firmwares for ipw(4) and iwi(4) are now included in the base tree.
1088 In order to use them one must agree to the respective LICENSE in
1089 share/doc/legal and define legal.intel_<name>.license_ack=1 via
1090 loader.conf(5) or kenv(1). Make sure to deinstall the now
1091 deprecated modules from the respective firmware ports.
1094 The name resolution/mapping functions addr2ascii(3) and ascii2addr(3)
1095 were removed from FreeBSD's libc. These originally came from INRIA
1096 IPv6. Nothing in FreeBSD ever used them. They may be regarded as
1097 deprecated in previous releases.
1098 The AF_LINK support for getnameinfo(3) was merged from NetBSD to
1099 replace it as a more portable (and re-entrant) API.
1102 To support interrupt filtering a modification to the newbus API
1103 has occurred, ABI was broken and __FreeBSD_version was bumped
1104 to 700031. Please make sure that your kernel and modules are in
1105 sync. For more info:
1106 http://docs.freebsd.org/cgi/mid.cgi?20070221233124.GA13941
1109 The IPv6 multicast forwarding code may now be loaded into GENERIC
1110 kernels by loading the ip_mroute.ko module. This is built into the
1111 module unless WITHOUT_INET6 or WITHOUT_INET6_SUPPORT options are
1112 set; see src.conf(5) for more information.
1115 The output of netstat -r has changed. Without -n, we now only
1116 print a "network name" without the prefix length if the network
1117 address and mask exactly match a Class A/B/C network, and an entry
1118 exists in the nsswitch "networks" map.
1119 With -n, we print the full unabbreviated CIDR network prefix in
1120 the form "a.b.c.d/p". 0.0.0.0/0 is always printed as "default".
1121 This change is in preparation for changes such as equal-cost
1122 multipath, and to more generally assist operational deployment
1123 of FreeBSD as a modern IPv4 router.
1126 PIM has been turned on by default in the IPv4 multicast
1127 routing code. The kernel option 'PIM' has now been removed.
1128 PIM is now built by default if option 'MROUTING' is specified.
1129 It may now be loaded into GENERIC kernels by loading the
1130 ip_mroute.ko module.
1133 Support for IPIP tunnels (VIFF_TUNNEL) in IPv4 multicast routing
1134 has been removed. Its functionality may be achieved by explicitly
1135 configuring gif(4) interfaces and using the 'phyint' keyword in
1137 XORP does not support source-routed IPv4 multicast tunnels nor the
1138 integrated IPIP tunneling, therefore it is not affected by this
1139 change. The __FreeBSD_version macro has been bumped to 700030.
1142 Support for PCI Message Signalled Interrupts has been
1143 re-enabled in the bge driver, only for those chips which are
1144 believed to support it properly. If there are any problems,
1145 MSI can be disabled completely by setting the
1146 'hw.pci.enable_msi' and 'hw.pci.enable_msix' tunables to 0
1150 Support for PCI Message Signalled Interrupts has been
1151 disabled again in the bge driver. Many revisions of the
1152 hardware fail to support it properly. Support can be
1153 re-enabled by removing the #define of BGE_DISABLE_MSI in
1154 "src/sys/dev/bge/if_bge.c".
1157 Support for PCI Message Signalled Interrupts has been added
1158 to the bge driver. If there are any problems, MSI can be
1159 disabled completely by setting the 'hw.pci.enable_msi' and
1160 'hw.pci.enable_msix' tunables to 0 in the loader.
1163 The removal of several facets of the experimental Threading
1164 system from the kernel means that the proc and thread structures
1165 have changed quite a bit. I suggest all kernel modules that might
1166 reference these structures be recompiled.. Especially the
1170 Sound infrastructure has been updated with various fixes and
1171 improvements. Most of the changes are pretty much transparent,
1172 with exceptions of followings:
1173 1) All sound driver specific sysctls (hw.snd.pcm%d.*) have been
1174 moved to their own dev sysctl nodes, for example:
1175 hw.snd.pcm0.vchans -> dev.pcm.0.vchans
1176 2) /dev/dspr%d.%d has been deprecated. Each channel now has its
1177 own chardev in the form of "dsp%d.<function>%d", where <function>
1178 is p = playback, r = record and v = virtual, respectively. Users
1179 are encouraged to use these devs instead of (old) "/dev/dsp%d.%d".
1180 This does not affect those who are using "/dev/dsp".
1183 geom(4)'s gmirror(8) class metadata structure has been
1184 rev'd from v3 to v4. If you update across this point and
1185 your metadata is converted for you, you will not be easily
1186 able to downgrade since the /boot/kernel.old/geom_mirror.ko
1187 kernel module will be unable to read the v4 metadata. You
1188 can resolve this by doing from the loader(8) prompt:
1190 set vfs.root.mountfrom="ufs:/dev/XXX"
1192 where XXX is the root slice of one of the disks that composed
1193 the mirror (i.e.: /dev/ad0s1a). You can then rebuild
1194 the array the same way you built it originally.
1197 The following binaries have been disconnected from the build:
1198 mount_devfs, mount_ext2fs, mount_fdescfs, mount_procfs, mount_linprocfs,
1199 and mount_std. The functionality of these programs has been
1200 moved into the mount program. For example, to mount a devfs
1201 filesystem, instead of using mount_devfs, use: "mount -t devfs".
1202 This does not affect entries in /etc/fstab, since entries in
1203 /etc/fstab are always processed with "mount -t fstype".
1206 Support for PCI Message Signalled Interrupts on i386 and amd64
1207 has been added to the kernel and various drivers will soon be
1208 updated to use MSI when it is available. If there are any problems,
1209 MSI can be disabled completely by setting the 'hw.pci.enable_msi'
1210 and 'hw.pci.enable_msix' tunables to 0 in the loader.
1213 The MUTEX_PROFILING option has been renamed to LOCK_PROFILING.
1214 The lockmgr object layout has been changed as a result of having
1215 a lock_object embedded in it. As a consequence all file system
1216 kernel modules must be re-compiled. The mutex profiling man page
1217 has not yet been updated to reflect this change.
1220 KSE in the kernel has now been made optional and turned on by
1221 default. Use 'nooption KSE' in your kernel config to turn it
1222 off. All kernel modules *must* be recompiled after this change.
1223 There-after, modules from a KSE kernel should be compatible with
1224 modules from a NOKSE kernel due to the temporary padding fields
1225 added to 'struct proc'.
1228 mrouted and its utilities have been removed from the base system.
1231 Some ioctl(2) command codes have changed. Full backward ABI
1232 compatibility is provided if the "options COMPAT_FREEBSD6" is
1233 present in the kernel configuration file. Make sure to add
1234 this option to your kernel config file, or recompile X.Org
1235 and the rest of ports; otherwise they may refuse to work.
1238 tcpslice has been removed from the base system.
1241 The sizes of struct tcpcb (and struct xtcpcb) have changed due to
1242 the rewrite of TCP syncookies. Tools like netstat, sockstat, and
1243 systat needs to be rebuilt.
1246 libpcap updated to v0.9.4 and tcpdump to v3.9.4
1249 The IPFIREWALL_FORWARD_EXTENDED option is gone and the behaviour
1250 for IPFIREWALL_FORWARD is now as it was before when it was first
1251 committed and for years after. The behaviour is now ON.
1254 enigma(1)/crypt(1) utility has been changed on 64 bit architectures.
1255 Now it can decrypt files created from different architectures.
1256 Unfortunately, it is no longer able to decrypt a cipher text
1257 generated with an older version on 64 bit architectures.
1258 If you have such a file, you need old utility to decrypt it.
1261 The interface version of the i4b kernel part has changed. So
1262 after updating the kernel sources and compiling a new kernel,
1263 the i4b user space tools in "/usr/src/usr.sbin/i4b" must also
1264 be rebuilt, and vice versa.
1267 The XBOX kernel now defaults to the nfe(4) driver instead of
1268 the nve(4) driver. Please update your configuration
1272 The i386-only lnc(4) driver for the AMD Am7900 LANCE and Am79C9xx
1273 PCnet family of NICs has been removed. The new le(4) driver serves
1274 as an equivalent but cross-platform replacement with the pcn(4)
1275 driver still providing performance-optimized support for the subset
1276 of AMD Am79C971 PCnet-FAST and greater chips as before.
1279 The machdep.* sysctls and the adjkerntz utility have been
1280 modified a bit. The new adjkerntz utility uses the new
1281 sysctl names and sysctlbyname() calls, so it may be impossible
1282 to run an old /sbin/adjkerntz utility in single-user mode
1283 with a new kernel. Replace the `adjkerntz -i' step before
1284 `make installworld' with:
1286 /usr/obj/usr/src/sbin/adjkerntz/adjkerntz -i
1288 and proceed as usual with the rest of the installworld-stage
1289 steps. Otherwise, you risk installing binaries with their
1290 timestamp set several hours in the future, especially if
1291 you are running with local time set to GMT+X hours.
1294 The ip6fw utility has been removed. The behavior provided by
1295 ip6fw has been in ipfw2 for a good while and the rc.d scripts
1296 have been updated to deal with it. There are some rules that
1297 might not migrate cleanly. Use rc.firewall6 as a template to
1301 The puc(4) driver has been overhauled. The ebus(4) and sbus(4)
1302 attachments have been removed. Make sure to configure scc(4)
1303 on sparc64. Note also that by default puc(4) will use uart(4)
1304 and not sio(4) for serial ports because interrupt handling has
1305 been optimized for multi-port serial cards and only uart(4)
1306 implements the interface to support it.
1309 The scc(4) driver replaces puc(4) for Serial Communications
1310 Controllers (SCCs) like the Siemens SAB82532 and the Zilog
1311 Z8530. On sparc64, it is advised to add scc(4) to the kernel
1312 configuration to make sure that the serial ports remain
1316 Most world/kernel related NO_* build options changed names.
1317 New knobs have common prefixes WITHOUT_*/WITH_* (modelled
1318 after FreeBSD ports) and should be set in /etc/src.conf
1319 (the src.conf(5) manpage is provided). Full backwards
1320 compatibility is maintained for the time being though it's
1321 highly recommended to start moving old options out of the
1322 system-wide /etc/make.conf file into the new /etc/src.conf
1323 while also properly renaming them. More conversions will
1324 likely follow. Posting to current@:
1326 http://lists.freebsd.org/pipermail/freebsd-current/2006-March/061725.html
1329 The NETSMBCRYPTO kernel option has been retired because its
1330 functionality is always included in NETSMB and smbfs.ko now.
1333 The TDFX_LINUX kernel option was retired and replaced by the
1334 tdfx_linux device. The latter can be loaded as the 3dfx_linux.ko
1335 kernel module. Loading it alone should suffice to get 3dfx support
1336 for Linux apps because it will pull in 3dfx.ko and linux.ko through
1340 The 'audit' group was added to support the new auditing functionality
1341 in the base system. Be sure to follow the directions for updating,
1342 including the requirement to run mergemaster -p.
1345 The kernel ABI to file system modules was changed on i386.
1346 Please make sure that your kernel and modules are in sync.
1349 This actually occured some time ago, but installing the kernel
1350 now also installs a bunch of symbol files for the kernel modules.
1351 This increases the size of /boot/kernel to about 67Mbytes. You
1352 will need twice this if you will eventually back this up to kernel.old
1353 on your next install.
1354 If you have a shortage of room in your root partition, you should add
1355 -DINSTALL_NODEBUG to your make arguments or add INSTALL_NODEBUG="yes"
1356 to your /etc/make.conf.
1359 libc's malloc implementation has been replaced. This change has the
1360 potential to uncover application bugs that previously went unnoticed.
1361 See the malloc(3) manual page for more details.
1364 The generic netgraph(4) cookie has been changed. If you upgrade
1365 kernel passing this point, you also need to upgrade userland
1366 and netgraph(4) utilities like ports/net/mpd or ports/net/mpd4.
1369 si(4)'s device files now contain the unit number.
1370 Uses of {cua,tty}A[0-9a-f] should be replaced by {cua,tty}A0[0-9a-f].
1373 The kernel ABI was mostly destroyed due to a change in the size
1374 of struct lock_object which is nested in other structures such
1375 as mutexes which are nested in all sorts of other structures.
1376 Make sure your kernel and modules are in sync.
1379 The page coloring algorithm in the VM subsystem was converted
1380 from tuning with kernel options to autotuning. Please remove
1381 any PQ_* option except PQ_NOOPT from your kernel config.
1384 The net80211-related tools in the tools/tools/ath directory
1385 have been moved to tools/tools/net80211 and renamed with a
1386 "wlan" prefix. Scripts that use them should be adjusted
1390 Scripts in the local_startup directories (as defined in
1391 /etc/defaults/rc.conf) that have the new rc.d semantics will
1392 now be run as part of the base system rcorder. If there are
1393 errors or problems with one of these local scripts, it could
1394 cause boot problems. If you encounter such problems, boot in
1395 single user mode, remove that script from the */rc.d directory.
1396 Please report the problem to the port's maintainer, and the
1397 freebsd-ports@freebsd.org mailing list.
1400 The nodev mount option was deprecated in RELENG_6 (where it
1401 was a no-op), and is now unsupported. If you have nodev or dev listed
1402 in /etc/fstab, remove it, otherwise it will result in a mount error.
1405 ABI between ipfw(4) and ipfw(8) has been changed. You need
1406 to rebuild ipfw(8) when rebuilding kernel.
1409 rp(4)'s device files now contain the unit number.
1410 Uses of {cua,tty}R[0-9a-f] should be replaced by {cua,tty}R0[0-9a-f].
1413 /etc/rc.d/ppp-user has been renamed to /etc/rc.d/ppp.
1414 Its /etc/rc.conf.d configuration file has been `ppp' from
1415 the beginning, and hence there is no need to touch it.
1418 Now most modules get their build-time options from the kernel
1419 configuration file. A few modules still have fixed options
1420 due to their non-conformant implementation, but they will be
1421 corrected eventually. You may need to review the options of
1422 the modules in use, explicitly specify the non-default options
1423 in the kernel configuration file, and rebuild the kernel and
1427 kern.polling.enable sysctl MIB is now deprecated. Use ifconfig(8)
1428 to turn polling(4) on your interfaces.
1431 The old bridge(4) implementation was retired. The new
1432 if_bridge(4) serves as a full functional replacement.
1435 The ai_addrlen of a struct addrinfo was changed to a socklen_t
1436 to conform to POSIX-2001. This change broke an ABI
1437 compatibility on 64 bit architecture. You have to recompile
1438 userland programs that use getaddrinfo(3) on 64 bit
1442 RELENG_6 branched here.
1445 The pccard_ifconfig rc.conf variable has been removed and a new
1446 variable, ifconfig_DEFAULT has been introduced. Unlike
1447 pccard_ifconfig, ifconfig_DEFAULT applies to ALL interfaces that
1448 do not have ifconfig_ifn entries rather than just those in
1449 removable_interfaces.
1452 Some previous versions of PAM have permitted the use of
1453 non-absolute paths in /etc/pam.conf or /etc/pam.d/* when referring
1454 to third party PAM modules in /usr/local/lib. A change has been
1455 made to require the use of absolute paths in order to avoid
1456 ambiguity and dependence on library path configuration, which may
1457 affect existing configurations.
1460 Major changes to network interface API. All drivers must be
1461 recompiled. Drivers not in the base system will need to be
1462 updated to the new APIs.
1465 Changes were made to kinfo_proc in sys/user.h. Please recompile
1466 userland, or commands like `fstat', `pkill', `ps', `top' and `w'
1467 will not behave correctly.
1469 The API and ABI for hwpmc(4) have changed with the addition
1470 of sampling support. Please recompile lib/libpmc(3) and
1471 usr.sbin/{pmcstat,pmccontrol}.
1474 The OpenBSD dhclient was imported in place of the ISC dhclient
1475 and the network interface configuration scripts were updated
1476 accordingly. If you use DHCP to configure your interfaces, you
1477 must now run devd. Also, DNS updating was lost so you will need
1478 to find a workaround if you use this feature.
1480 The '_dhcp' user was added to support the OpenBSD dhclient. Be
1481 sure to run mergemaster -p (like you are supposed to do every time
1485 if_bridge was added to the tree. This has changed struct ifnet.
1486 Please recompile userland and all network related modules.
1489 The n_net of a struct netent was changed to an uint32_t, and
1490 1st argument of getnetbyaddr() was changed to an uint32_t, to
1491 conform to POSIX-2001. These changes broke an ABI
1492 compatibility on 64 bit architecture. With these changes,
1493 shlib major of libpcap was bumped. You have to recompile
1494 userland programs that use getnetbyaddr(3), getnetbyname(3),
1495 getnetent(3) and/or libpcap on 64 bit architecture.
1498 Kernel parsing of extra options on '#!' first lines of shell
1499 scripts has changed. Lines with multiple options likely will
1500 fail after this date. For full details, please see
1501 http://people.freebsd.org/~gad/Updating-20050528.txt
1504 The packet filter (pf) code has been updated to OpenBSD 3.7
1505 Please note the changed anchor syntax and the fact that
1506 authpf(8) now needs a mounted fdescfs(5) to function.
1509 The NO_MIXED_MODE kernel option has been removed from the i386
1510 amd64 platforms as its use has been superceded by the new local
1511 APIC timer code. Any kernel config files containing this option
1515 The on-disk format of LC_CTYPE files was changed to be machine
1516 independent. Please make sure NOT to use NO_CLEAN buildworld
1517 when crossing this point. Crossing this point also requires
1518 recompile or reinstall of all locale depended packages.
1521 The ifi_epoch member of struct if_data has been changed to
1522 contain the uptime at which the interface was created or the
1523 statistics zeroed rather then the wall clock time because
1524 wallclock time may go backwards. This should have no impact
1525 unless an snmp implementation is using this value (I know of
1526 none at this point.)
1529 The acpi_perf and acpi_throttle drivers are now part of the
1530 acpi(4) main module. They are no longer built separately.
1533 The layout of struct image_params has changed. You have to
1534 recompile all compatibility modules (linux, svr4, etc) for use
1535 with the new kernel.
1538 The p4tcc driver has been merged into cpufreq(4). This makes
1539 "options CPU_ENABLE_TCC" obsolete. Please load cpufreq.ko or
1540 compile in "device cpufreq" to restore this functionality.
1543 The responsibility of recomputing the file system summary of
1544 a SoftUpdates-enabled dirty volume has been transferred to the
1545 background fsck. A rebuild of fsck(8) utility is recommended
1546 if you have updated the kernel.
1548 To get the old behavior (recompute file system summary at mount
1549 time), you can set vfs.ffs.compute_summary_at_mount=1 before
1550 mounting the new volume.
1553 The cpufreq import is complete. As part of this, the sysctls for
1554 acpi(4) throttling have been removed. The power_profile script
1555 has been updated, so you can use performance/economy_cpu_freq in
1556 rc.conf(5) to set AC on/offline cpu frequencies.
1559 NG_VERSION has been increased. Recompiling kernel (or ng_socket.ko)
1560 requires recompiling libnetgraph and userland netgraph utilities.
1563 Support for abbreviated forms of a number of ipfw options is
1564 now deprecated. Warnings are printed to stderr indicating the
1565 correct full form when a match occurs. Some abbreviations may
1566 be supported at a later date based on user feedback. To be
1567 considered for support, abbreviations must be in use prior to
1568 this commit and unlikely to be confused with current key words.
1571 By a popular demand, a lot of NOFOO options were renamed
1572 to NO_FOO (see bsd.compat.mk for a full list). The old
1573 spellings are still supported, but will cause annoying
1574 warnings on stderr. Make sure you upgrade properly (see
1575 the COMMON ITEMS: section later in this file).
1578 Auto-loading of ancillary wlan modules such as wlan_wep has
1579 been temporarily disabled; you need to statically configure
1580 the modules you need into your kernel or explicitly load them
1581 prior to use. Specifically, if you intend to use WEP encryption
1582 with an 802.11 device load/configure wlan_wep; if you want to
1583 use WPA with the ath driver load/configure wlan_tkip, wlan_ccmp,
1584 and wlan_xauth as required.
1587 The behaviour of ppp(8) has changed slightly. If lqr is enabled
1588 (``enable lqr''), older versions would revert to LCP ECHO mode on
1589 negotiation failure. Now, ``enable echo'' is required for this
1590 behaviour. The ppp version number has been bumped to 3.4.2 to
1594 The wlan support has been updated to split the crypto support
1595 into separate modules. For static WEP you must configure the
1596 wlan_wep module in your system or build and install the module
1597 in place where it can be loaded (the kernel will auto-load
1598 the module when a wep key is configured).
1601 The ath driver has been updated to split the tx rate control
1602 algorithm into a separate module. You need to include either
1603 ath_rate_onoe or ath_rate_amrr when configuring the kernel.
1606 Support for systems with an 80386 CPU has been removed. Please
1607 use FreeBSD 5.x or earlier on systems with an 80386.
1610 We have had a hack which would mount the root filesystem
1611 R/W if the device were named 'md*'. As part of the vnode
1612 work I'm doing I have had to remove this hack. People
1613 building systems which use preloaded MD root filesystems
1614 may need to insert a "/sbin/mount -u -o rw /dev/md0 /" in
1615 their /etc/rc scripts.
1618 FreeBSD 5.3 shipped here.
1621 The size of struct tcpcb has changed again due to the removal
1622 of RFC1644 T/TCP. You have to recompile userland programs that
1623 read kmem for tcp sockets directly (netstat, sockstat, etc.)
1626 The size of struct tcpcb has changed. You have to recompile
1627 userland programs that read kmem for tcp sockets directly
1628 (netstat, sockstat, etc.)
1631 RELENG_5 branched here. For older entries, please see updating
1632 in the RELENG_5 branch.
1638 Avoid using make -j when upgrading. From time to time in the
1639 past there have been problems using -j with buildworld and/or
1640 installworld. This is especially true when upgrading between
1641 "distant" versions (eg one that cross a major release boundary
1642 or several minor releases, or when several months have passed
1643 on the -current branch).
1645 Sometimes, obscure build problems are the result of environment
1646 poisoning. This can happen because the make utility reads its
1647 environment when searching for values for global variables.
1648 To run your build attempts in an "environmental clean room",
1649 prefix all make commands with 'env -i '. See the env(1) manual
1650 page for more details.
1652 When upgrading from one major version to another it is generally
1653 best to upgrade to the latest code in the currently installed branch
1654 first, then do an upgrade to the new branch. This is the best-tested
1655 upgrade path, and has the highest probability of being successful.
1656 Please try this approach before reporting problems with a major
1661 When upgrading the boot ZFS pool to a new version, always follow
1664 1.) recompile and reinstall the ZFS boot loader and boot block
1665 (this is part of "make buildworld" and "make installworld")
1667 2.) update the ZFS boot block on your boot drive
1669 The following example updates the ZFS boot block on the first
1670 partition (freebsd-boot) of a GPT partitioned drive ad0:
1671 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0"
1673 Non-boot pools do not need these updates.
1677 If you are updating from a prior version of FreeBSD (even one just
1678 a few days old), you should follow this procedure. It is the most
1679 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
1681 make kernel-toolchain
1682 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE
1683 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE
1685 To test a kernel once
1686 ---------------------
1687 If you just want to boot a kernel once (because you are not sure
1688 if it works, or if you want to boot a known bad kernel to provide
1689 debugging information) run
1690 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
1691 nextboot -k testkernel
1693 To just build a kernel when you know that it won't mess you up
1694 --------------------------------------------------------------
1695 This assumes you are already running a 5.X system. Replace
1696 ${arch} with the architecture of your machine (e.g. "i386",
1697 "alpha", "amd64", "ia64", "pc98", "sparc64", etc).
1699 cd src/sys/${arch}/conf
1700 config KERNEL_NAME_HERE
1701 cd ../compile/KERNEL_NAME_HERE
1706 If this fails, go to the "To build a kernel" section.
1708 To rebuild everything and install it on the current system.
1709 -----------------------------------------------------------
1710 # Note: sometimes if you are running current you gotta do more than
1711 # is listed here if you are upgrading from a really old current.
1713 <make sure you have good level 0 dumps>
1715 make kernel KERNCONF=YOUR_KERNEL_HERE
1717 <reboot in single user> [3]
1725 To cross-install current onto a separate partition
1726 --------------------------------------------------
1727 # In this approach we use a separate partition to hold
1728 # current's root, 'usr', and 'var' directories. A partition
1729 # holding "/", "/usr" and "/var" should be about 2GB in
1732 <make sure you have good level 0 dumps>
1735 make buildkernel KERNCONF=YOUR_KERNEL_HERE
1736 <maybe newfs current's root partition>
1737 <mount current's root partition on directory ${CURRENT_ROOT}>
1738 make installworld DESTDIR=${CURRENT_ROOT}
1739 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
1740 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT}
1741 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd
1742 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
1743 <reboot into current>
1744 <do a "native" rebuild/install as described in the previous section>
1745 <maybe install compatibility libraries from ports/misc/compat*>
1749 To upgrade in-place from 5.x-stable to current
1750 ----------------------------------------------
1751 <make sure you have good level 0 dumps>
1753 make kernel KERNCONF=YOUR_KERNEL_HERE [8]
1755 <reboot in single user> [3]
1762 Make sure that you've read the UPDATING file to understand the
1763 tweaks to various things you need. At this point in the life
1764 cycle of current, things change often and you are on your own
1765 to cope. The defaults can also change, so please read ALL of
1766 the UPDATING entries.
1768 Also, if you are tracking -current, you must be subscribed to
1769 freebsd-current@freebsd.org. Make sure that before you update
1770 your sources that you have read and understood all the recent
1771 messages there. If in doubt, please track -stable which has
1772 much fewer pitfalls.
1774 [1] If you have third party modules, such as vmware, you
1775 should disable them at this point so they don't crash your
1778 [3] From the bootblocks, boot -s, and then do
1783 adjkerntz -i # if CMOS is wall time
1784 Also, when doing a major release upgrade, it is required that
1785 you boot into single user mode to do the installworld.
1787 [4] Note: This step is non-optional. Failure to do this step
1788 can result in a significant reduction in the functionality of the
1789 system. Attempting to do it by hand is not recommended and those
1790 that pursue this avenue should read this file carefully, as well
1791 as the archives of freebsd-current and freebsd-hackers mailing lists
1792 for potential gotchas.
1794 [5] Usually this step is a noop. However, from time to time
1795 you may need to do this if you get unknown user in the following
1796 step. It never hurts to do it all the time. You may need to
1797 install a new mergemaster (cd src/usr.sbin/mergemaster && make
1798 install) after the buildworld before this step if you last updated
1799 from current before 20020224 or from -stable before 20020408.
1801 [6] This only deletes old files and directories. Old libraries
1802 can be deleted by "make delete-old-libs", but you have to make
1803 sure that no program is using those libraries anymore.
1805 [8] In order to have a kernel that can run the 4.x binaries
1806 needed to do an installworld, you must include the COMPAT_FREEBSD4
1807 option in your kernel. Failure to do so may leave you with a system
1808 that is hard to boot to recover. A similar kernel option COMPAT_FREEBSD5
1809 is required to run the 5.x binaries on more recent kernels.
1811 Make sure that you merge any new devices from GENERIC since the
1812 last time you updated your kernel config file.
1814 [9] When checking out sources, you must include the -P flag to have
1815 cvs prune empty directories.
1817 If CPUTYPE is defined in your /etc/make.conf, make sure to use the
1818 "?=" instead of the "=" assignment operator, so that buildworld can
1819 override the CPUTYPE if it needs to.
1821 MAKEOBJDIRPREFIX must be defined in an environment variable, and
1822 not on the command line, or in /etc/make.conf. buildworld will
1823 warn if it is improperly defined.
1826 This file contains a list, in reverse chronological order, of major
1827 breakages in tracking -current. It is not guaranteed to be a complete
1828 list of such breakages, and only contains entries since October 16, 2004.
1829 If you need to see UPDATING entries from before that date, you will need
1830 to fetch an UPDATING file from an older FreeBSD release.
1832 Copyright information:
1834 Copyright 1998-2005 M. Warner Losh. All Rights Reserved.
1836 Redistribution, publication, translation and use, with or without
1837 modification, in full or in part, in any form or format of this
1838 document are permitted without further permission from the author.
1840 THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR
1841 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
1842 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
1843 DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT,
1844 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
1845 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
1846 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1847 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
1848 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
1849 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1850 POSSIBILITY OF SUCH DAMAGE.
1852 If you find this document useful, and you want to, you may buy the
1855 Contact Warner Losh if you have any questions about your use of