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 Added ZFS TRIM support which is enabled by default. To disable
20 ZFS TRIM support set vfs.zfs.trim.enabled=0 in loader.conf.
22 Creating new ZFS pools and adding new devices to existing pools
23 first performs a full device level TRIM, which can take a significant
24 amount of time. Set the sysctl vfs.zfs.vdev.trim_on_init to 0 to
25 disable this behaviour.
27 ZFS TRIM requires the underlying device support BIO_DELETE which
28 is currently provided by methods such as ATA TRIM and SCSI UNMAP
29 via CAM, which are typically supported by SSD's.
31 Stats for ZFS TRIM can be monitored by looking at the sysctl's
32 under kstat.zfs.misc.zio_trim.
38 `list' command has been added to hastctl(8). For now, it is full
39 equivalent of `status' command.
40 WARNING: in the near future the output of hastctl's status command
41 will change to more terse format. If you use `hastctl status'
42 for parsing in your scripts, switch to `hastctl list'.
45 Fix a bug that allows NFS clients to issue READDIR on files.
48 A new compression method (lz4) has been merged. Please refer to
49 zpool-features(7) for more information.
51 Please refer to the "ZFS notes" section of this file for information
52 on upgrading boot ZFS pools.
55 A new version of ZFS (pool version 5000) has been merged to 8-STABLE.
56 Starting with this version the old system of ZFS pool versioning
57 is superseded by "feature flags". This concept enables forward
58 compatibility against certain future changes in functionality of ZFS
59 pools. The first two read-only compatible "feature flags" for ZFS
60 pools are "com.delphix:async_destroy" and "com.delphix:empty_bpobj".
61 For more information read the new zpool-features(7) manual page.
62 Please refer to the "ZFS notes" section of this file for information
63 on upgrading boot ZFS pools.
66 WITH_CTF can now be specified in src.conf (not recommended, there
67 are some problems with static executables), make.conf (would also
68 affect ports which do not use GNU make and do not override the
69 compile targets) or in the kernel config (via "makeoptions
71 When WITH_CTF was specified there before this was silently ignored,
72 so make sure that WITH_CTF is not used in places which could lead
76 The random(4) support for the VIA hardware random number
77 generator (`PADLOCK') is no longer enabled unconditionally.
78 Add the PADLOCK_RNG option in the custom kernel config if
79 needed. The GENERIC kernels on i386 and amd64 do include the
80 option, so the change only affects the custom kernel
84 The sparc64 ZFS loader has been changed to no longer try to auto-
85 detect ZFS providers based on diskN aliases but now requires these
86 to be explicitly listed in the OFW boot-device environment variable.
92 A new VOP_ADVISE() was added to support posix_fadvise(2). All
93 filesystem modules must be recompiled.
96 A new VOP_ALLOCATE() was added to support posix_fallocate(2). All
97 filesystem modules must be recompiled.
100 The broken amd(4) driver has been replaced with esp(4) in the amd64,
101 i386 and pc98 GENERIC kernel configuration files.
104 A new version of ZFS (version 28) has been merged.
105 This version does not depend on a python library and the
106 sysutils/py-zfs port is not used anymore.
107 For upgrading your boot pool, please read "ZFS notes"
108 in the COMMON ITEMS: section later in this file.
111 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868
112 compliant, and will now use half of hash for authentication.
113 This will break interoperability with all stacks (including all
114 older FreeBSD versions) who implement
115 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for
117 The only workaround with such peers is to use another HMAC
118 algorithm for IPsec ("phase 2") authentication.
124 New version of minidump format for amd64 architecture was
125 introduced in r215872. To analyze vmcore files produced by
126 kernels at or after this version you will need updated userland,
127 libkvm actually, that is able to handle the new version.
130 A workaround for a fixed ld bug has been removed in kernel code,
131 so make sure that your system ld is built from sources after
132 revision 211583 from 2010-08-21 (r210245 from 2010-07-19 if
133 building stable/8 kernel on head, r211584 from 2010-08-21 for
134 stable/7). A symptom of incorrect ld version is
135 different addresses for set_pcpu section and __start_set_pcpu
136 symbol in kernel and/or modules.
139 A new version of ZFS (version 15) has been merged.
140 This version uses a python library for the following subcommands:
141 zfs allow, zfs unallow, zfs groupspace, zfs userspace.
142 For full functionality of these commands the following port must
143 be installed: sysutils/py-zfs
149 The config(8) command has been updated to maintain compatibility
150 with config files from 8.0-RELEASE. You will need a new version
151 of config to build kernels (this version can be used from 8.0-RELEASE
152 forward). The buildworld target will generate it, so following
153 the instructions in this file for updating will work glitch-free.
154 Merely doing a make buildkernel without first doing a make buildworld
155 (or kernel-toolchain), or attempting to build a kernel using
156 traidtional methods will generate a config version warning, indicating
160 The rc.firewall and rc.firewall6 were unified, and
161 rc.firewall6 and rc.d/ip6fw were removed.
162 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc
163 variables are obsoleted. Instead, the following new rc
164 variables are added to rc.d/ipfw:
166 firewall_client_net_ipv6, firewall_simple_iif_ipv6,
167 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6,
168 firewall_simple_onet_ipv6
170 The meanings correspond to the relevant IPv4 variables.
173 COMPAT_IA32 has been added as an alias for COMPAT_FREEBSD32. A new
174 version of config(8) is required. The error message when you hit this
175 condition is confusing (COMPAT_FREEBSD32 duplicate option), when it
176 should really say "your config is too old to compile this new kernel."
179 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32
180 to allow 32-bit compatibility on non-x86 platforms. All kernel
181 configurations on amd64 and ia64 platforms using these options must
182 be modified accordingly.
185 Introduce the kernel thread "deadlock resolver" (which can be enabled
186 via the DEADLKRES option, see NOTES for more details) and the
187 sleepq_type() function for sleepqueues.
193 802.11s D3.03 support was committed. This is incompatible with
194 the previous code, which was based on D3.0.
197 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for
198 mount(8) and -a option for df(1) to see them.
201 Remove the option STOP_NMI. The default action is now to use NMI
202 only for KDB via the newly introduced function stop_cpus_hard()
203 and maintain stop_cpus() to just use a normal IPI_STOP on ia32
210 Bump the shared library version numbers for all libraries that
211 do not use symbol versioning as part of the 8.0-RELEASE cycle.
212 Bump __FreeBSD_version to 800105.
215 Due to changes in the implementation of virtual network stack
216 support, all network-related kernel modules must be recompiled.
217 As this change breaks the ABI, bump __FreeBSD_version to 800104.
220 The TOE interface to the TCP syncache has been modified to remove struct
221 tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. The
222 cxgb driver is the only TOE consumer affected by this change, and needs
223 to be recompiled along with the kernel. As this change breaks the ABI,
224 bump __FreeBSD_version to 800103.
227 Padding has been added to struct tcpcb, sackhint and tcpstat in
228 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst
229 maintainig the ABI. However, this change breaks the ABI, so bump
230 __FreeBSD_version to 800102. User space tools that rely on the size of
231 any of these structs (e.g. sockstat) need to be recompiled.
234 The NFS_LEGACYRPC option has been removed along with the old
235 kernel RPC implementation that this option selected. Kernel
236 configurations may need to be adjusted.
239 The network interface device nodes at /dev/net/<interface> have
240 been removed. All ioctl operations can be performed the normal
241 way using routing sockets. The kqueue functionality can
242 generally be replaced with routing sockets.
245 The documentation from the FreeBSD Documentation Project
246 (Handbook, FAQ, etc.) is now installed via packages by
247 sysinstall(8) and under the /usr/local/share/doc/freebsd
248 directory instead of /usr/share/doc.
251 The ABI of various structures related to the SYSV IPC API have
252 been changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43
253 kernel options now all require COMPAT_FREEBSD7.
254 Bump __FreeBSD_version to 800100.
257 Layout of struct vnet has changed as routing related variables
258 were moved to their own Vimage module. Modules need to be
259 recompiled. Bump __FreeBSD_version to 800099.
262 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023
263 and 1024 respectively. As long as no more than 16 groups per
264 process are used, no changes should be visible. When more
265 than 16 groups are used, old binaries may fail if they call
266 getgroups() or getgrouplist() with statically sized storage.
267 Recompiling will work around this, but applications should be
268 modified to use dynamically allocated storage for group arrays
269 as POSIX.1-2008 does not cap an implementation's number of
270 supported groups at NGROUPS_MAX+1 as previous versions did.
272 NFS and portalfs mounts may also be affected as the list of
273 groups is truncated to 16. Users of NFS who use more than 16
274 groups, should take care that negative group permissions are not
275 used on the exported file systems as they will not be reliable
276 unless a GSSAPI based authentication method is used.
279 The compiling option ADAPTIVE_LOCKMGRS has been introduced.
280 This option compiles in the support for adaptive spinning for lockmgrs
281 which want to enable it. The lockinit() function now accepts the
282 flag LK_ADAPTIVE in order to make the lock object subject to
283 adaptive spinning when both held in write and read mode.
286 The layout of the structure returned by IEEE80211_IOC_STA_INFO
287 has changed. User applications that use this ioctl need to be
291 The layout of struct thread has changed. Kernel and modules
295 The layout of structs ifnet, domain, protosw and vnet_net has
296 changed. Kernel modules need to be rebuilt.
297 Bump __FreeBSD_version to 800097.
300 window(1) has been removed from the base system. It can now be
301 installed from ports. The port is called misc/window.
304 The way we are storing and accessing `routing table' entries
305 has changed. Programs reading the FIB, like netstat, need to
309 A new netisr implementation has been added for FreeBSD 8. Network
310 file system modules, such as igmp, ipdivert, and others, should be
312 Bump __FreeBSD_version to 800096.
315 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose
319 Add VOP_ACCESSX(9). File system modules need to be rebuilt.
320 Bump __FreeBSD_version to 800094.
323 Add mnt_xflag field to 'struct mount'. File system modules
325 Bump __FreeBSD_version to 800093.
328 The compiling option ADAPTIVE_SX has been retired while it has been
329 introduced the option NO_ADAPTIVE_SX which handles the reversed logic.
330 The KPI for sx_init_flags() changes as accepting flags:
331 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag
332 has been introduced in order to handle the reversed logic.
333 Bump __FreeBSD_version to 800092.
336 Add support for hierarchical jails. Remove global securelevel.
337 Bump __FreeBSD_version to 800091.
340 The layout of struct vnet_net has changed, therefore modules
342 Bump __FreeBSD_version to 800090.
345 The newly imported zic(8) produces a new format in the
346 output. Please run tzsetup(8) to install the newly created
347 data to /etc/localtime.
350 The sysctl tree for the usb stack has renamed from hw.usb2.* to
351 hw.usb.* and is now consistent again with previous releases.
354 802.11 monitor mode support was revised and driver api's
355 were changed. Drivers dependent on net80211 now support
356 DLT_IEEE802_11_RADIO instead of DLT_IEEE802_11. No
357 user-visible data structures were changed but applications
358 that use DLT_IEEE802_11 may require changes.
359 Bump __FreeBSD_version to 800088.
362 The layout of the following structs has changed: sysctl_oid,
363 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet,
364 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or
365 panics may be experienced. World rebuild is required for
366 correctly checking networking state from userland.
367 Bump __FreeBSD_version to 800085.
370 MLDv2 and Source-Specific Multicast (SSM) have been merged
371 to the IPv6 stack. VIMAGE hooks are in but not yet used.
372 The implementation of SSM within FreeBSD's IPv6 stack closely
373 follows the IPv4 implementation.
375 For kernel developers:
377 * The most important changes are that the ip6_output() and
378 ip6_input() paths no longer take the IN6_MULTI_LOCK,
379 and this lock has been downgraded to a non-recursive mutex.
381 * As with the changes to the IPv4 stack to support SSM, filtering
382 of inbound multicast traffic must now be performed by transport
383 protocols within the IPv6 stack. This does not apply to TCP and
384 SCTP, however, it does apply to UDP in IPv6 and raw IPv6.
386 * The KPIs used by IPv6 multicast are similar to those used by
387 the IPv4 stack, with the following differences:
388 * im6o_mc_filter() is analogous to imo_multicast_filter().
389 * The legacy KAME entry points in6_joingroup and in6_leavegroup()
390 are shimmed to in6_mc_join() and in6_mc_leave() respectively.
391 * IN6_LOOKUP_MULTI() has been deprecated and removed.
392 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs
393 for MLDv1 have an additional 'timer' argument which is used to
394 jitter the initial membership report for the solicited-node
395 multicast membership on-link.
396 * This is not strictly needed for MLDv2, which already jitters
397 its report transmissions. However, the 'timer' argument is
398 preserved in case MLDv1 is active on the interface.
400 * The KAME linked-list based IPv6 membership implementation has
401 been refactored to use a vector similar to that used by the IPv4
403 Code which maintains a list of its own multicast memberships
404 internally, e.g. carp, has been updated to reflect the new
407 * There is a known Lock Order Reversal (LOR) due to in6_setscope()
408 acquiring the IF_AFDATA_LOCK and being called within ip6_output().
409 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an
410 implementation constraint which needs to be addressed in HEAD.
412 For application developers:
414 * The changes are broadly similar to those made for the IPv4
417 * The use of IPv4 and IPv6 multicast socket options on the same
418 socket, using mapped addresses, HAS NOT been tested or supported.
420 * There are a number of issues with the implementation of various
421 IPv6 multicast APIs which need to be resolved in the API surface
422 before the implementation is fully compatible with KAME userland
423 use, and these are mostly to do with interface index treatment.
425 * The literature available discusses the use of either the delta / ASM
426 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API
427 using setsourcefilter(3)/getsourcefilter(3). For more information
428 please refer to RFC 3768, 'Socket Interface Extensions for
429 Multicast Source Filters'.
431 * Applications which use the published RFC 3678 APIs should be fine.
433 For systems administrators:
435 * The mtest(8) utility has been refactored to support IPv6, in
436 addition to IPv4. Interface addresses are no longer accepted
437 as arguments, their names must be used instead. The utility
438 will map the interface name to its first IPv4 address as
439 returned by getifaddrs(3).
441 * The ifmcstat(8) utility has also been updated to print the MLDv2
442 endpoint state and source filter lists via sysctl(3).
444 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable
445 loopback of IPv6 multicast datagrams by default; it defaults to 1
446 to preserve the existing behaviour. Disabling multicast loopback is
447 recommended for optimal system performance.
449 * The IPv6 MROUTING code has been changed to examine this sysctl
450 instead of attempting to perform a group lookup before looping
451 back forwarded datagrams.
453 Bump __FreeBSD_version to 800084.
456 Implement low-level Bluetooth HCI API.
457 Bump __FreeBSD_version to 800083.
460 The layout of struct malloc_type, used by modules to register new
461 memory allocation types, has changed. Most modules will need to
462 be rebuilt or panics may be experienced.
463 Bump __FreeBSD_version to 800081.
466 Anticipate overflowing inp_flags - add inp_flags2.
467 This changes most offsets in inpcb, so checking v4 connection
468 state will require a world rebuild.
469 Bump __FreeBSD_version to 800080.
472 Add an llentry to struct route and struct route_in6. Modules
473 embedding a struct route will need to be recompiled.
474 Bump __FreeBSD_version to 800079.
477 The size of rt_metrics_lite and by extension rtentry has changed.
478 Networking administration apps will need to be recompiled.
479 The route command now supports show as an alias for get, weighting
480 of routes, sticky and nostick flags to alter the behavior of stateful
482 Bump __FreeBSD_version to 800078.
485 Do not use Giant for kbdmux(4) locking. This is wrong and
486 apparently causing more problems than it solves. This will
487 re-open the issue where interrupt handlers may race with
488 kbdmux(4) in polling mode. Typical symptoms include (but
489 not limited to) duplicated and/or missing characters when
490 low level console functions (such as gets) are used while
491 interrupts are enabled (for example geli password prompt,
492 mountroot prompt etc.). Disabling kbdmux(4) may help.
495 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed;
496 kernel modules referencing any of the above need to be recompiled.
497 Bump __FreeBSD_version to 800075.
500 GEOM_PART has become the default partition slicer for storage devices,
501 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It
502 introduces some changes:
504 MSDOS/EBR: the devices created from MSDOS extended partition entries
505 (EBR) can be named differently than with GEOM_MBR and are now symlinks
506 to devices with offset-based names. fstabs may need to be modified.
508 BSD: the "geometry does not match label" warning is harmless in most
509 cases but it points to problems in file system misalignment with
510 disk geometry. The "c" partition is now implicit, covers the whole
511 top-level drive and cannot be (mis)used by users.
513 General: Kernel dumps are now not allowed to be written to devices
514 whose partition types indicate they are meant to be used for file
515 systems (or, in case of MSDOS partitions, as something else than
518 Most of these changes date approximately from 200812.
521 The uscanner(4) driver has been removed from the kernel. This follows
522 Linux removing theirs in 2.6 and making libusb the default interface
526 The multicast forwarding code has been cleaned up. netstat(1)
527 only relies on KVM now for printing bandwidth upcall meters.
528 The IPv4 and IPv6 modules are split into ip_mroute_mod and
529 ip6_mroute_mod respectively. The config(5) options for statically
530 compiling this code remain the same, i.e. 'options MROUTING'.
533 Support for the IFF_NEEDSGIANT network interface flag has been
534 removed, which means that non-MPSAFE network device drivers are no
535 longer supported. In particular, if_ar, if_sr, and network device
536 drivers from the old (legacy) USB stack can no longer be built or
540 POSIX.1 Native Language Support (NLS) has been enabled in libc and
541 a bunch of new language catalog files have also been added.
542 This means that some common libc messages are now localized and
543 they depend on the LC_MESSAGES environmental variable.
546 The k8temp(4) driver has been renamed to amdtemp(4) since
547 support for K10 and K11 CPU families was added.
550 IGMPv3 and Source-Specific Multicast (SSM) have been merged
551 to the IPv4 stack. VIMAGE hooks are in but not yet used.
553 For kernel developers, the most important changes are that the
554 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(),
555 and this lock has been downgraded to a non-recursive mutex.
557 Transport protocols (UDP, Raw IP) are now responsible for filtering
558 inbound multicast traffic according to group membership and source
559 filters. The imo_multicast_filter() KPI exists for this purpose.
560 Transports which do not use multicast (SCTP, TCP) already reject
561 multicast by default. Forwarding and receive performance may improve
562 as a mutex acquisition is no longer needed in the ip_input()
563 low-level input path. in_addmulti() and in_delmulti() are shimmed
564 to new KPIs which exist to support SSM in-kernel.
566 For application developers, it is recommended that loopback of
567 multicast datagrams be disabled for best performance, as this
568 will still cause the lock to be taken for each looped-back
569 datagram transmission. The net.inet.ip.mcast.loop sysctl may
570 be tuned to 0 to disable loopback by default; it defaults to 1
571 to preserve the existing behaviour.
573 For systems administrators, to obtain best performance with
574 multicast reception and multiple groups, it is always recommended
575 that a card with a suitably precise hash filter is used. Hash
576 collisions will still result in the lock being taken within the
577 transport protocol input path to check group membership.
579 If deploying FreeBSD in an environment with IGMP snooping switches,
580 it is recommended that the net.inet.igmp.sendlocal sysctl remain
581 enabled; this forces 224.0.0.0/24 group membership to be announced
584 The size of 'struct igmpstat' has changed; netstat needs to be
585 recompiled to reflect this.
586 Bump __FreeBSD_version to 800070.
589 libusb20.so.1 is now installed as libusb.so.1 and the ports system
590 updated to use it. This requires a buildworld/installworld in order to
591 update the library and dependencies (usbconfig, etc). Its advisable to
592 rebuild all ports which uses libusb. More specific directions are given
593 in the ports collection UPDATING file. Any /etc/libmap.conf entries for
594 libusb are no longer required and can be removed.
597 A workaround is committed to allow the creation of System V shared
598 memory segment of size > 2 GB on the 64-bit architectures.
599 Due to a limitation of the existing ABI, the shm_segsz member
600 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is
601 wrong for large segments. Note that limits must be explicitly
602 raised to allow such segments to be created.
605 The layout of struct ifnet has changed, requiring a rebuild of all
606 network device driver modules.
609 The /dev handling for the new USB stack has changed, a
610 buildworld/installworld is required for libusb20.
613 The new USB2 stack has now been permanently moved in and all kernel and
614 module names reverted to their previous values (eg, usb, ehci, ohci,
615 ums, ...). The old usb stack can be compiled in by prefixing the name
616 with the letter 'o', the old usb modules have been removed.
617 Updating entry 20090216 for xorg and 20090215 for libmap may still
621 The rc.conf(5) option if_up_delay has been renamed to
622 defaultroute_delay to better reflect its purpose. If you have
623 customized this setting in /etc/rc.conf you need to update it to
627 xorg 7.4 wants to configure its input devices via hald which does not
628 yet work with USB2. If the keyboard/mouse does not work in xorg then
630 Option "AllowEmptyInput" "off"
631 to your ServerLayout section. This will cause X to use the configured
632 kbd and mouse sections from your xorg.conf.
635 The GENERIC kernels for all architectures now default to the new USB2
636 stack. No kernel config options or code have been removed so if a
637 problem arises please report it and optionally revert to the old USB
638 stack. If you are loading USB kernel modules or have a custom kernel
639 that includes GENERIC then ensure that usb names are also changed over,
640 eg uftdi -> usb2_serial_ftdi.
642 Older programs linked against the ports libusb 0.1 need to be
643 redirected to the new stack's libusb20. /etc/libmap.conf can
645 # Map old usb library to new one for usb2 stack
646 libusb-0.1.so.8 libusb20.so.1
649 All USB ethernet devices now attach as interfaces under the name ueN
650 (eg. ue0). This is to provide a predictable name as vendors often
651 change usb chipsets in a product without notice.
654 The ichsmb(4) driver has been changed to require SMBus slave
655 addresses be left-justified (xxxxxxx0b) rather than right-justified.
656 All of the other SMBus controller drivers require left-justified
657 slave addresses, so this change makes all the drivers provide the
661 INET6 statistics (struct ip6stat) was updated.
662 netstat(1) needs to be recompiled.
665 NTFS has been removed from GENERIC kernel on amd64 to match
666 GENERIC on i386. Should not cause any issues since mount_ntfs(8)
667 will load ntfs.ko module automatically when NTFS support is
668 actually needed, unless ntfs.ko is not installed or security
669 level prohibits loading kernel modules. If either is the case,
670 "options NTFS" has to be added into kernel config.
673 TCP Appropriate Byte Counting (RFC 3465) support added to kernel.
674 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to
675 800061. User space tools that rely on the size of struct tcpcb in
676 tcp_var.h (e.g. sockstat) need to be recompiled.
679 ng_tty(4) module updated to match the new TTY subsystem.
680 Due to API change, user-level applications must be updated.
681 New API support added to mpd5 CVS and expected to be present
682 in next mpd5.3 release.
685 With __FreeBSD_version 800060 the makefs tool is part of
686 the base system (it was a port).
689 The afdata and ifnet locks have been changed from mutexes to
690 rwlocks, network modules will need to be re-compiled.
693 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite.
694 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated.
695 The new code reduced struct rtentry{} by 16 bytes on 32-bit
696 architecture and 40 bytes on 64-bit architecture. The userland
697 applications "arp" and "ndp" have been updated accordingly.
698 The output from "netstat -r" shows only routing entries and
699 none of the L2 information.
702 __FreeBSD_version 800057 marks the switchover from the
703 binary ath hal to source code. Users must add the line:
705 options AH_SUPPORT_AR5416
707 to their kernel config files when specifying:
711 The ath_hal module no longer exists; the code is now compiled
712 together with the driver in the ath module. It is now
713 possible to tailor chip support (i.e. reduce the set of chips
714 and thereby the code size); consult ath_hal(4) for details.
717 __FreeBSD_version 800054 adds memory barriers to
718 <machine/atomic.h>, new interfaces to ifnet to facilitate
719 multiple hardware transmit queues for cards that support
720 them, and a lock-less ring-buffer implementation to
721 enable drivers to more efficiently manage queueing of
725 A new version of ZFS (version 13) has been merged to -HEAD.
726 This version has zpool attribute "listsnapshots" off by
727 default, which means "zfs list" does not show snapshots,
728 and is the same as Solaris behavior.
731 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled.
734 The uhci, ohci, ehci and slhci USB Host controller drivers have
735 been put into separate modules. If you load the usb module
736 separately through loader.conf you will need to load the
737 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0
738 controller add the following to loader.conf:
744 The ABI used by the PMC toolset has changed. Please keep
745 userland (libpmc(3)) and the kernel module (hwpmc(4)) in
749 atapci kernel module now includes only generic PCI ATA
750 driver. AHCI driver moved to ataahci kernel module.
751 All vendor-specific code moved into separate kernel modules:
752 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek,
753 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron,
754 atamarvell, atamicron, atanational, atanetcell, atanvidia,
755 atapromise, ataserverworks, atasiliconimage, atasis, atavia
758 The TTY subsystem of the kernel has been replaced by a new
759 implementation, which provides better scalability and an
760 improved driver model. Most common drivers have been migrated to
761 the new TTY subsystem, while others have not. The following
762 drivers have not yet been ported to the new TTY layer:
765 cy, digi, rc, rp, sio
771 ng_h4, ng_tty, ppp, sl, snp
773 Adding these drivers to your kernel configuration file shall
774 cause compilation to fail.
777 ntpd has been upgraded to 4.2.4p5.
780 OpenSSH has been upgraded to 5.1p1.
782 For many years, FreeBSD's version of OpenSSH preferred DSA
783 over RSA for host and user authentication keys. With this
784 upgrade, we've switched to the vendor's default of RSA over
785 DSA. This may cause upgraded clients to warn about unknown
786 host keys even for previously known hosts. Users should
787 follow the usual procedure for verifying host keys before
788 accepting the RSA key.
790 This can be circumvented by setting the "HostKeyAlgorithms"
791 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh
794 Please note that the sequence of keys offered for
795 authentication has been changed as well. You may want to
796 specify IdentityFile in a different order to revert this
800 The sio(4) driver has been removed from the i386 and amd64
801 kernel configuration files. This means uart(4) is now the
802 default serial port driver on those platforms as well.
804 To prevent collisions with the sio(4) driver, the uart(4) driver
805 uses different names for its device nodes. This means the
806 onboard serial port will now most likely be called "ttyu0"
807 instead of "ttyd0". You may need to reconfigure applications to
808 use the new device names.
810 When using the serial port as a boot console, be sure to update
811 /boot/device.hints and /etc/ttys before booting the new kernel.
812 If you forget to do so, you can still manually specify the hints
813 at the loader prompt:
815 set hint.uart.0.at="isa"
816 set hint.uart.0.port="0x3F8"
817 set hint.uart.0.flags="0x10"
818 set hint.uart.0.irq="4"
822 The gpt(8) utility has been removed. Use gpart(8) to partition
826 The version that Linuxulator emulates was changed from 2.4.2
827 to 2.6.16. If you experience any problems with Linux binaries
828 please try to set sysctl compat.linux.osrelease to 2.4.2 and
829 if it fixes the problem contact emulation mailing list.
832 ISDN4BSD (I4B) was removed from the src tree. You may need to
833 update a your kernel configuration and remove relevant entries.
836 I have checked in code to support multiple routing tables.
837 See the man pages setfib(1) and setfib(2).
838 This is a hopefully backwards compatible version,
839 but to make use of it you need to compile your kernel
840 with options ROUTETABLES=2 (or more up to 16).
843 The 802.11 wireless support was redone to enable multi-bss
844 operation on devices that are capable. The underlying device
845 is no longer used directly but instead wlanX devices are
846 cloned with ifconfig. This requires changes to rc.conf files.
848 ifconfig_ath0="WPA DHCP"
851 ifconfig_wlan0="WPA DHCP"
852 see rc.conf(5) for more details. In addition, mergemaster of
853 /etc/rc.d is highly recommended. Simultaneous update of userland
854 and kernel wouldn't hurt either.
856 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta
857 modules were merged into the base wlan module. All references
858 to these modules (e.g. in kernel config files) must be removed.
861 psm(4) has gained write(2) support in native operation level.
862 Arbitrary commands can be written to /dev/psm%d and status can
863 be read back from it. Therefore, an application is responsible
864 for status validation and error recovery. It is a no-op in
865 other operation levels.
868 Support for KSE threading has been removed from the kernel. To
869 run legacy applications linked against KSE libmap.conf may
870 be used. The following libmap.conf may be used to ensure
871 compatibility with any prior release:
873 libpthread.so.1 libthr.so.1
874 libpthread.so.2 libthr.so.2
875 libkse.so.3 libthr.so.3
878 The layout of struct vmspace has changed. This affects libkvm
879 and any executables that link against libkvm and use the
880 kvm_getprocs() function. In particular, but not exclusively,
881 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1).
882 The effects are minimal, but it's advisable to upgrade world
886 The latest em driver no longer has support in it for the
887 82575 adapter, this is now moved to the igb driver. The
888 split was done to make new features that are incompatible
889 with older hardware easier to do.
892 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4),
893 likewise the kernel option is now GEOM_LINUX_LVM.
896 The default NFS mount mode has changed from UDP to TCP for
897 increased reliability. If you rely on (insecurely) NFS
898 mounting across a firewall you may need to update your
902 Belatedly note the addition of m_collapse for compacting
906 The fts(3) structures have been changed to use adequate
907 integer types for their members and so to be able to cope
908 with huge file trees. The old fts(3) ABI is preserved
909 through symbol versioning in libc, so third-party binaries
910 using fts(3) should still work, although they will not take
911 advantage of the extended types. At the same time, some
912 third-party software might fail to build after this change
913 due to unportable assumptions made in its source code about
914 fts(3) structure members. Such software should be fixed
915 by its vendor or, in the worst case, in the ports tree.
916 FreeBSD_version 800015 marks this change for the unlikely
917 case that a portable fix is impossible.
920 To upgrade to -current after this date, you must be running
921 FreeBSD not older than 6.0-RELEASE. Upgrading to -current
922 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems.
925 The ADAPTIVE_GIANT kernel option has been retired because its
926 functionality is the default now.
929 The AT keyboard emulation of sunkbd(4) has been turned on
930 by default. In order to make the special symbols of the Sun
931 keyboards driven by sunkbd(4) work under X these now have
932 to be configured the same way as Sun USB keyboards driven
933 by ukbd(4) (which also does AT keyboard emulation), f.e.:
935 Option "XkbLayout" "us"
936 Option "XkbRules" "xorg"
937 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us"
940 It has been decided that it is desirable to provide ABI
941 backwards compatibility to the FreeBSD 4/5/6 versions of the
942 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was
943 broken with the introduction of PCI domain support (see the
944 20070930 entry). Unfortunately, this required the ABI of
945 PCIOCGETCONF to be broken again in order to be able to
946 provide backwards compatibility to the old version of that
947 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled
948 again. As for prominent ports this affects neither pciutils
949 nor xorg-server this time, the hal port needs to be rebuilt
953 The misnamed kthread_create() and friends have been renamed
954 to kproc_create() etc. Many of the callers already
956 I will return kthread_create() and friends in a while
957 with implementations that actually create threads, not procs.
958 Renaming corresponds with version 800002.
964 Setting WITHOUT_LIBPTHREAD now means WITHOUT_LIBKSE and
965 WITHOUT_LIBTHR are set.
968 The PCI code has been made aware of PCI domains. This means that
969 the location strings as used by pciconf(8) etc are now in the
970 following format: pci<domain>:<bus>:<device>[:<function>]. It
971 also means that consumers of <sys/pciio.h> potentially need to
972 be recompiled; this includes the hal and xorg-server ports.
975 The caching daemon (cached) was renamed to nscd. nscd.conf
976 configuration file should be used instead of cached.conf and
977 nscd_enable, nscd_pidfile and nscd_flags options should be used
978 instead of cached_enable, cached_pidfile and cached_flags in
982 The getfacl(1) utility now prints owning user and group name
983 instead of owning uid and gid in the three line comment header.
984 This is the same behavior as getfacl(1) on Solaris and Linux.
987 The new IPsec code is now compiled in using the IPSEC option. The
988 IPSEC option now requires "device crypto" be defined in your kernel
989 configuration. The FAST_IPSEC kernel option is now deprecated.
992 The packet filter (pf) code has been updated to OpenBSD 4.1 Please
993 note the changed syntax - keep state is now on by default. Also
994 note the fact that ftp-proxy(8) has been changed from bottom up and
995 has been moved from libexec to usr/sbin. Changes in the ALTQ
996 handling also affect users of IPFW's ALTQ capabilities.
999 Remove KAME IPsec in favor of FAST_IPSEC, which is now the
1000 only IPsec supported by FreeBSD. The new IPsec stack
1001 supports both IPv4 and IPv6. The kernel option will change
1002 after the code changes have settled in. For now the kernel
1003 option IPSEC is deprecated and FAST_IPSEC is the only option, that
1004 will change after some settling time.
1007 The wicontrol(8) utility has been removed from the base system. wi(4)
1008 cards should be configured using ifconfig(8), see the man page for more
1012 The i386/amd64 GENERIC kernel now defaults to the nfe(4) driver
1013 instead of the nve(4) driver. Please update your configuration
1017 By default, /etc/rc.d/sendmail no longer rebuilds the aliases
1018 database if it is missing or older than the aliases file. If
1019 desired, set the new rc.conf option sendmail_rebuild_aliases
1020 to "YES" to restore that functionality.
1023 The IPv4 multicast socket code has been considerably modified, and
1024 moved to the file sys/netinet/in_mcast.c. Initial support for the
1025 RFC 3678 Source-Specific Multicast Socket API has been added to
1026 the IPv4 network stack.
1028 Strict multicast and broadcast reception is now the default for
1029 UDP/IPv4 sockets; the net.inet.udp.strict_mcast_mship sysctl variable
1030 has now been removed.
1032 The RFC 1724 hack for interface selection has been removed; the use
1033 of the Linux-derived ip_mreqn structure with IP_MULTICAST_IF has
1034 been added to replace it. Consumers such as routed will soon be
1035 updated to reflect this.
1037 These changes affect users who are running routed(8) or rdisc(8)
1038 from the FreeBSD base system on point-to-point or unnumbered
1042 The net80211 layer has changed significantly and all wireless
1043 drivers that depend on it need to be recompiled. Further these
1044 changes require that any program that interacts with the wireless
1045 support in the kernel be recompiled; this includes: ifconfig,
1046 wpa_supplicant, hostapd, and wlanstats. Users must also, for
1047 the moment, kldload the wlan_scan_sta and/or wlan_scan_ap modules
1048 if they use modules for wireless support. These modules implement
1049 scanning support for station and ap modes, respectively. Failure
1050 to load the appropriate module before marking a wireless interface
1051 up will result in a message to the console and the device not
1055 The pam_nologin(8) module ceases to provide an authentication
1056 function and starts providing an account management function.
1057 Consequent changes to /etc/pam.d should be brought in using
1058 mergemaster(8). Third-party files in /usr/local/etc/pam.d may
1059 need manual editing as follows. Locate this line (or similar):
1061 auth required pam_nologin.so no_warn
1063 and change it according to this example:
1065 account required pam_nologin.so no_warn
1067 That is, the first word needs to be changed from "auth" to
1068 "account". The new line can be moved to the account section
1069 within the file for clarity. Not updating pam.conf(5) files
1070 will result in nologin(5) ignored by the respective services.
1073 The ether_ioctl() function has been synchronized with ioctl(2)
1074 and ifnet.if_ioctl. Due to that, the size of one of its arguments
1075 has changed on 64-bit architectures. All kernel modules using
1076 ether_ioctl() need to be rebuilt on such architectures.
1079 Improved INCLUDE_CONFIG_FILE support has been introduced to the
1080 config(8) utility. In order to take advantage of this new
1081 functionality, you are expected to recompile and install
1082 src/usr.sbin/config. If you don't rebuild config(8), and your
1083 kernel configuration depends on INCLUDE_CONFIG_FILE, the kernel
1084 build will be broken because of a missing "kernconfstring"
1088 Symbol versioning is enabled by default. To disable it, use
1089 option WITHOUT_SYMVER. It is not advisable to attempt to
1090 disable symbol versioning once it is enabled; your installworld
1091 will break because a symbol version-less libc will get installed
1092 before the install tools. As a result, the old install tools,
1093 which previously had symbol dependencies to FBSD_1.0, will fail
1094 because the freshly installed libc will not have them.
1096 The default threading library (providing "libpthread") has been
1097 changed to libthr. If you wish to have libkse as your default,
1098 use option DEFAULT_THREAD_LIB=libkse for the buildworld.
1101 The ABI breakage in sendmail(8)'s libmilter has been repaired
1102 so it is no longer necessary to recompile mail filters (aka,
1103 milters). If you recompiled mail filters after the 20070408
1104 note, it is not necessary to recompile them again.
1107 The new trunk(4) driver has been renamed to lagg(4) as it better
1108 reflects its purpose. ifconfig will need to be recompiled.
1111 sendmail(8) has been updated to version 8.14.1. Mail filters
1112 (aka, milters) compiled against the libmilter included in the
1113 base operating system should be recompiled.
1116 Firmwares for ipw(4) and iwi(4) are now included in the base tree.
1117 In order to use them one must agree to the respective LICENSE in
1118 share/doc/legal and define legal.intel_<name>.license_ack=1 via
1119 loader.conf(5) or kenv(1). Make sure to deinstall the now
1120 deprecated modules from the respective firmware ports.
1123 The name resolution/mapping functions addr2ascii(3) and ascii2addr(3)
1124 were removed from FreeBSD's libc. These originally came from INRIA
1125 IPv6. Nothing in FreeBSD ever used them. They may be regarded as
1126 deprecated in previous releases.
1127 The AF_LINK support for getnameinfo(3) was merged from NetBSD to
1128 replace it as a more portable (and re-entrant) API.
1131 To support interrupt filtering a modification to the newbus API
1132 has occurred, ABI was broken and __FreeBSD_version was bumped
1133 to 700031. Please make sure that your kernel and modules are in
1134 sync. For more info:
1135 http://docs.freebsd.org/cgi/mid.cgi?20070221233124.GA13941
1138 The IPv6 multicast forwarding code may now be loaded into GENERIC
1139 kernels by loading the ip_mroute.ko module. This is built into the
1140 module unless WITHOUT_INET6 or WITHOUT_INET6_SUPPORT options are
1141 set; see src.conf(5) for more information.
1144 The output of netstat -r has changed. Without -n, we now only
1145 print a "network name" without the prefix length if the network
1146 address and mask exactly match a Class A/B/C network, and an entry
1147 exists in the nsswitch "networks" map.
1148 With -n, we print the full unabbreviated CIDR network prefix in
1149 the form "a.b.c.d/p". 0.0.0.0/0 is always printed as "default".
1150 This change is in preparation for changes such as equal-cost
1151 multipath, and to more generally assist operational deployment
1152 of FreeBSD as a modern IPv4 router.
1155 PIM has been turned on by default in the IPv4 multicast
1156 routing code. The kernel option 'PIM' has now been removed.
1157 PIM is now built by default if option 'MROUTING' is specified.
1158 It may now be loaded into GENERIC kernels by loading the
1159 ip_mroute.ko module.
1162 Support for IPIP tunnels (VIFF_TUNNEL) in IPv4 multicast routing
1163 has been removed. Its functionality may be achieved by explicitly
1164 configuring gif(4) interfaces and using the 'phyint' keyword in
1166 XORP does not support source-routed IPv4 multicast tunnels nor the
1167 integrated IPIP tunneling, therefore it is not affected by this
1168 change. The __FreeBSD_version macro has been bumped to 700030.
1171 Support for PCI Message Signalled Interrupts has been
1172 re-enabled in the bge driver, only for those chips which are
1173 believed to support it properly. If there are any problems,
1174 MSI can be disabled completely by setting the
1175 'hw.pci.enable_msi' and 'hw.pci.enable_msix' tunables to 0
1179 Support for PCI Message Signalled Interrupts has been
1180 disabled again in the bge driver. Many revisions of the
1181 hardware fail to support it properly. Support can be
1182 re-enabled by removing the #define of BGE_DISABLE_MSI in
1183 "src/sys/dev/bge/if_bge.c".
1186 Support for PCI Message Signalled Interrupts has been added
1187 to the bge driver. If there are any problems, MSI can be
1188 disabled completely by setting the 'hw.pci.enable_msi' and
1189 'hw.pci.enable_msix' tunables to 0 in the loader.
1192 The removal of several facets of the experimental Threading
1193 system from the kernel means that the proc and thread structures
1194 have changed quite a bit. I suggest all kernel modules that might
1195 reference these structures be recompiled.. Especially the
1199 Sound infrastructure has been updated with various fixes and
1200 improvements. Most of the changes are pretty much transparent,
1201 with exceptions of followings:
1202 1) All sound driver specific sysctls (hw.snd.pcm%d.*) have been
1203 moved to their own dev sysctl nodes, for example:
1204 hw.snd.pcm0.vchans -> dev.pcm.0.vchans
1205 2) /dev/dspr%d.%d has been deprecated. Each channel now has its
1206 own chardev in the form of "dsp%d.<function>%d", where <function>
1207 is p = playback, r = record and v = virtual, respectively. Users
1208 are encouraged to use these devs instead of (old) "/dev/dsp%d.%d".
1209 This does not affect those who are using "/dev/dsp".
1212 geom(4)'s gmirror(8) class metadata structure has been
1213 rev'd from v3 to v4. If you update across this point and
1214 your metadata is converted for you, you will not be easily
1215 able to downgrade since the /boot/kernel.old/geom_mirror.ko
1216 kernel module will be unable to read the v4 metadata. You
1217 can resolve this by doing from the loader(8) prompt:
1219 set vfs.root.mountfrom="ufs:/dev/XXX"
1221 where XXX is the root slice of one of the disks that composed
1222 the mirror (i.e.: /dev/ad0s1a). You can then rebuild
1223 the array the same way you built it originally.
1226 The following binaries have been disconnected from the build:
1227 mount_devfs, mount_ext2fs, mount_fdescfs, mount_procfs, mount_linprocfs,
1228 and mount_std. The functionality of these programs has been
1229 moved into the mount program. For example, to mount a devfs
1230 filesystem, instead of using mount_devfs, use: "mount -t devfs".
1231 This does not affect entries in /etc/fstab, since entries in
1232 /etc/fstab are always processed with "mount -t fstype".
1235 Support for PCI Message Signalled Interrupts on i386 and amd64
1236 has been added to the kernel and various drivers will soon be
1237 updated to use MSI when it is available. If there are any problems,
1238 MSI can be disabled completely by setting the 'hw.pci.enable_msi'
1239 and 'hw.pci.enable_msix' tunables to 0 in the loader.
1242 The MUTEX_PROFILING option has been renamed to LOCK_PROFILING.
1243 The lockmgr object layout has been changed as a result of having
1244 a lock_object embedded in it. As a consequence all file system
1245 kernel modules must be re-compiled. The mutex profiling man page
1246 has not yet been updated to reflect this change.
1249 KSE in the kernel has now been made optional and turned on by
1250 default. Use 'nooption KSE' in your kernel config to turn it
1251 off. All kernel modules *must* be recompiled after this change.
1252 There-after, modules from a KSE kernel should be compatible with
1253 modules from a NOKSE kernel due to the temporary padding fields
1254 added to 'struct proc'.
1257 mrouted and its utilities have been removed from the base system.
1260 Some ioctl(2) command codes have changed. Full backward ABI
1261 compatibility is provided if the "options COMPAT_FREEBSD6" is
1262 present in the kernel configuration file. Make sure to add
1263 this option to your kernel config file, or recompile X.Org
1264 and the rest of ports; otherwise they may refuse to work.
1267 tcpslice has been removed from the base system.
1270 The sizes of struct tcpcb (and struct xtcpcb) have changed due to
1271 the rewrite of TCP syncookies. Tools like netstat, sockstat, and
1272 systat needs to be rebuilt.
1275 libpcap updated to v0.9.4 and tcpdump to v3.9.4
1278 The IPFIREWALL_FORWARD_EXTENDED option is gone and the behaviour
1279 for IPFIREWALL_FORWARD is now as it was before when it was first
1280 committed and for years after. The behaviour is now ON.
1283 enigma(1)/crypt(1) utility has been changed on 64 bit architectures.
1284 Now it can decrypt files created from different architectures.
1285 Unfortunately, it is no longer able to decrypt a cipher text
1286 generated with an older version on 64 bit architectures.
1287 If you have such a file, you need old utility to decrypt it.
1290 The interface version of the i4b kernel part has changed. So
1291 after updating the kernel sources and compiling a new kernel,
1292 the i4b user space tools in "/usr/src/usr.sbin/i4b" must also
1293 be rebuilt, and vice versa.
1296 The XBOX kernel now defaults to the nfe(4) driver instead of
1297 the nve(4) driver. Please update your configuration
1301 The i386-only lnc(4) driver for the AMD Am7900 LANCE and Am79C9xx
1302 PCnet family of NICs has been removed. The new le(4) driver serves
1303 as an equivalent but cross-platform replacement with the pcn(4)
1304 driver still providing performance-optimized support for the subset
1305 of AMD Am79C971 PCnet-FAST and greater chips as before.
1308 The machdep.* sysctls and the adjkerntz utility have been
1309 modified a bit. The new adjkerntz utility uses the new
1310 sysctl names and sysctlbyname() calls, so it may be impossible
1311 to run an old /sbin/adjkerntz utility in single-user mode
1312 with a new kernel. Replace the `adjkerntz -i' step before
1313 `make installworld' with:
1315 /usr/obj/usr/src/sbin/adjkerntz/adjkerntz -i
1317 and proceed as usual with the rest of the installworld-stage
1318 steps. Otherwise, you risk installing binaries with their
1319 timestamp set several hours in the future, especially if
1320 you are running with local time set to GMT+X hours.
1323 The ip6fw utility has been removed. The behavior provided by
1324 ip6fw has been in ipfw2 for a good while and the rc.d scripts
1325 have been updated to deal with it. There are some rules that
1326 might not migrate cleanly. Use rc.firewall6 as a template to
1330 The puc(4) driver has been overhauled. The ebus(4) and sbus(4)
1331 attachments have been removed. Make sure to configure scc(4)
1332 on sparc64. Note also that by default puc(4) will use uart(4)
1333 and not sio(4) for serial ports because interrupt handling has
1334 been optimized for multi-port serial cards and only uart(4)
1335 implements the interface to support it.
1338 The scc(4) driver replaces puc(4) for Serial Communications
1339 Controllers (SCCs) like the Siemens SAB82532 and the Zilog
1340 Z8530. On sparc64, it is advised to add scc(4) to the kernel
1341 configuration to make sure that the serial ports remain
1345 Most world/kernel related NO_* build options changed names.
1346 New knobs have common prefixes WITHOUT_*/WITH_* (modelled
1347 after FreeBSD ports) and should be set in /etc/src.conf
1348 (the src.conf(5) manpage is provided). Full backwards
1349 compatibility is maintained for the time being though it's
1350 highly recommended to start moving old options out of the
1351 system-wide /etc/make.conf file into the new /etc/src.conf
1352 while also properly renaming them. More conversions will
1353 likely follow. Posting to current@:
1355 http://lists.freebsd.org/pipermail/freebsd-current/2006-March/061725.html
1358 The NETSMBCRYPTO kernel option has been retired because its
1359 functionality is always included in NETSMB and smbfs.ko now.
1362 The TDFX_LINUX kernel option was retired and replaced by the
1363 tdfx_linux device. The latter can be loaded as the 3dfx_linux.ko
1364 kernel module. Loading it alone should suffice to get 3dfx support
1365 for Linux apps because it will pull in 3dfx.ko and linux.ko through
1369 The 'audit' group was added to support the new auditing functionality
1370 in the base system. Be sure to follow the directions for updating,
1371 including the requirement to run mergemaster -p.
1374 The kernel ABI to file system modules was changed on i386.
1375 Please make sure that your kernel and modules are in sync.
1378 This actually occured some time ago, but installing the kernel
1379 now also installs a bunch of symbol files for the kernel modules.
1380 This increases the size of /boot/kernel to about 67Mbytes. You
1381 will need twice this if you will eventually back this up to kernel.old
1382 on your next install.
1383 If you have a shortage of room in your root partition, you should add
1384 -DINSTALL_NODEBUG to your make arguments or add INSTALL_NODEBUG="yes"
1385 to your /etc/make.conf.
1388 libc's malloc implementation has been replaced. This change has the
1389 potential to uncover application bugs that previously went unnoticed.
1390 See the malloc(3) manual page for more details.
1393 The generic netgraph(4) cookie has been changed. If you upgrade
1394 kernel passing this point, you also need to upgrade userland
1395 and netgraph(4) utilities like ports/net/mpd or ports/net/mpd4.
1398 si(4)'s device files now contain the unit number.
1399 Uses of {cua,tty}A[0-9a-f] should be replaced by {cua,tty}A0[0-9a-f].
1402 The kernel ABI was mostly destroyed due to a change in the size
1403 of struct lock_object which is nested in other structures such
1404 as mutexes which are nested in all sorts of other structures.
1405 Make sure your kernel and modules are in sync.
1408 The page coloring algorithm in the VM subsystem was converted
1409 from tuning with kernel options to autotuning. Please remove
1410 any PQ_* option except PQ_NOOPT from your kernel config.
1413 The net80211-related tools in the tools/tools/ath directory
1414 have been moved to tools/tools/net80211 and renamed with a
1415 "wlan" prefix. Scripts that use them should be adjusted
1419 Scripts in the local_startup directories (as defined in
1420 /etc/defaults/rc.conf) that have the new rc.d semantics will
1421 now be run as part of the base system rcorder. If there are
1422 errors or problems with one of these local scripts, it could
1423 cause boot problems. If you encounter such problems, boot in
1424 single user mode, remove that script from the */rc.d directory.
1425 Please report the problem to the port's maintainer, and the
1426 freebsd-ports@freebsd.org mailing list.
1429 The nodev mount option was deprecated in RELENG_6 (where it
1430 was a no-op), and is now unsupported. If you have nodev or dev listed
1431 in /etc/fstab, remove it, otherwise it will result in a mount error.
1434 ABI between ipfw(4) and ipfw(8) has been changed. You need
1435 to rebuild ipfw(8) when rebuilding kernel.
1438 rp(4)'s device files now contain the unit number.
1439 Uses of {cua,tty}R[0-9a-f] should be replaced by {cua,tty}R0[0-9a-f].
1442 /etc/rc.d/ppp-user has been renamed to /etc/rc.d/ppp.
1443 Its /etc/rc.conf.d configuration file has been `ppp' from
1444 the beginning, and hence there is no need to touch it.
1447 Now most modules get their build-time options from the kernel
1448 configuration file. A few modules still have fixed options
1449 due to their non-conformant implementation, but they will be
1450 corrected eventually. You may need to review the options of
1451 the modules in use, explicitly specify the non-default options
1452 in the kernel configuration file, and rebuild the kernel and
1456 kern.polling.enable sysctl MIB is now deprecated. Use ifconfig(8)
1457 to turn polling(4) on your interfaces.
1460 The old bridge(4) implementation was retired. The new
1461 if_bridge(4) serves as a full functional replacement.
1464 The ai_addrlen of a struct addrinfo was changed to a socklen_t
1465 to conform to POSIX-2001. This change broke an ABI
1466 compatibility on 64 bit architecture. You have to recompile
1467 userland programs that use getaddrinfo(3) on 64 bit
1471 RELENG_6 branched here.
1474 The pccard_ifconfig rc.conf variable has been removed and a new
1475 variable, ifconfig_DEFAULT has been introduced. Unlike
1476 pccard_ifconfig, ifconfig_DEFAULT applies to ALL interfaces that
1477 do not have ifconfig_ifn entries rather than just those in
1478 removable_interfaces.
1481 Some previous versions of PAM have permitted the use of
1482 non-absolute paths in /etc/pam.conf or /etc/pam.d/* when referring
1483 to third party PAM modules in /usr/local/lib. A change has been
1484 made to require the use of absolute paths in order to avoid
1485 ambiguity and dependence on library path configuration, which may
1486 affect existing configurations.
1489 Major changes to network interface API. All drivers must be
1490 recompiled. Drivers not in the base system will need to be
1491 updated to the new APIs.
1494 Changes were made to kinfo_proc in sys/user.h. Please recompile
1495 userland, or commands like `fstat', `pkill', `ps', `top' and `w'
1496 will not behave correctly.
1498 The API and ABI for hwpmc(4) have changed with the addition
1499 of sampling support. Please recompile lib/libpmc(3) and
1500 usr.sbin/{pmcstat,pmccontrol}.
1503 The OpenBSD dhclient was imported in place of the ISC dhclient
1504 and the network interface configuration scripts were updated
1505 accordingly. If you use DHCP to configure your interfaces, you
1506 must now run devd. Also, DNS updating was lost so you will need
1507 to find a workaround if you use this feature.
1509 The '_dhcp' user was added to support the OpenBSD dhclient. Be
1510 sure to run mergemaster -p (like you are supposed to do every time
1514 if_bridge was added to the tree. This has changed struct ifnet.
1515 Please recompile userland and all network related modules.
1518 The n_net of a struct netent was changed to an uint32_t, and
1519 1st argument of getnetbyaddr() was changed to an uint32_t, to
1520 conform to POSIX-2001. These changes broke an ABI
1521 compatibility on 64 bit architecture. With these changes,
1522 shlib major of libpcap was bumped. You have to recompile
1523 userland programs that use getnetbyaddr(3), getnetbyname(3),
1524 getnetent(3) and/or libpcap on 64 bit architecture.
1527 Kernel parsing of extra options on '#!' first lines of shell
1528 scripts has changed. Lines with multiple options likely will
1529 fail after this date. For full details, please see
1530 http://people.freebsd.org/~gad/Updating-20050528.txt
1533 The packet filter (pf) code has been updated to OpenBSD 3.7
1534 Please note the changed anchor syntax and the fact that
1535 authpf(8) now needs a mounted fdescfs(5) to function.
1538 The NO_MIXED_MODE kernel option has been removed from the i386
1539 amd64 platforms as its use has been superceded by the new local
1540 APIC timer code. Any kernel config files containing this option
1544 The on-disk format of LC_CTYPE files was changed to be machine
1545 independent. Please make sure NOT to use NO_CLEAN buildworld
1546 when crossing this point. Crossing this point also requires
1547 recompile or reinstall of all locale depended packages.
1550 The ifi_epoch member of struct if_data has been changed to
1551 contain the uptime at which the interface was created or the
1552 statistics zeroed rather then the wall clock time because
1553 wallclock time may go backwards. This should have no impact
1554 unless an snmp implementation is using this value (I know of
1555 none at this point.)
1558 The acpi_perf and acpi_throttle drivers are now part of the
1559 acpi(4) main module. They are no longer built separately.
1562 The layout of struct image_params has changed. You have to
1563 recompile all compatibility modules (linux, svr4, etc) for use
1564 with the new kernel.
1567 The p4tcc driver has been merged into cpufreq(4). This makes
1568 "options CPU_ENABLE_TCC" obsolete. Please load cpufreq.ko or
1569 compile in "device cpufreq" to restore this functionality.
1572 The responsibility of recomputing the file system summary of
1573 a SoftUpdates-enabled dirty volume has been transferred to the
1574 background fsck. A rebuild of fsck(8) utility is recommended
1575 if you have updated the kernel.
1577 To get the old behavior (recompute file system summary at mount
1578 time), you can set vfs.ffs.compute_summary_at_mount=1 before
1579 mounting the new volume.
1582 The cpufreq import is complete. As part of this, the sysctls for
1583 acpi(4) throttling have been removed. The power_profile script
1584 has been updated, so you can use performance/economy_cpu_freq in
1585 rc.conf(5) to set AC on/offline cpu frequencies.
1588 NG_VERSION has been increased. Recompiling kernel (or ng_socket.ko)
1589 requires recompiling libnetgraph and userland netgraph utilities.
1592 Support for abbreviated forms of a number of ipfw options is
1593 now deprecated. Warnings are printed to stderr indicating the
1594 correct full form when a match occurs. Some abbreviations may
1595 be supported at a later date based on user feedback. To be
1596 considered for support, abbreviations must be in use prior to
1597 this commit and unlikely to be confused with current key words.
1600 By a popular demand, a lot of NOFOO options were renamed
1601 to NO_FOO (see bsd.compat.mk for a full list). The old
1602 spellings are still supported, but will cause annoying
1603 warnings on stderr. Make sure you upgrade properly (see
1604 the COMMON ITEMS: section later in this file).
1607 Auto-loading of ancillary wlan modules such as wlan_wep has
1608 been temporarily disabled; you need to statically configure
1609 the modules you need into your kernel or explicitly load them
1610 prior to use. Specifically, if you intend to use WEP encryption
1611 with an 802.11 device load/configure wlan_wep; if you want to
1612 use WPA with the ath driver load/configure wlan_tkip, wlan_ccmp,
1613 and wlan_xauth as required.
1616 The behaviour of ppp(8) has changed slightly. If lqr is enabled
1617 (``enable lqr''), older versions would revert to LCP ECHO mode on
1618 negotiation failure. Now, ``enable echo'' is required for this
1619 behaviour. The ppp version number has been bumped to 3.4.2 to
1623 The wlan support has been updated to split the crypto support
1624 into separate modules. For static WEP you must configure the
1625 wlan_wep module in your system or build and install the module
1626 in place where it can be loaded (the kernel will auto-load
1627 the module when a wep key is configured).
1630 The ath driver has been updated to split the tx rate control
1631 algorithm into a separate module. You need to include either
1632 ath_rate_onoe or ath_rate_amrr when configuring the kernel.
1635 Support for systems with an 80386 CPU has been removed. Please
1636 use FreeBSD 5.x or earlier on systems with an 80386.
1639 We have had a hack which would mount the root filesystem
1640 R/W if the device were named 'md*'. As part of the vnode
1641 work I'm doing I have had to remove this hack. People
1642 building systems which use preloaded MD root filesystems
1643 may need to insert a "/sbin/mount -u -o rw /dev/md0 /" in
1644 their /etc/rc scripts.
1647 FreeBSD 5.3 shipped here.
1650 The size of struct tcpcb has changed again due to the removal
1651 of RFC1644 T/TCP. You have to recompile userland programs that
1652 read kmem for tcp sockets directly (netstat, sockstat, etc.)
1655 The size of struct tcpcb has changed. You have to recompile
1656 userland programs that read kmem for tcp sockets directly
1657 (netstat, sockstat, etc.)
1660 RELENG_5 branched here. For older entries, please see updating
1661 in the RELENG_5 branch.
1667 Avoid using make -j when upgrading. From time to time in the
1668 past there have been problems using -j with buildworld and/or
1669 installworld. This is especially true when upgrading between
1670 "distant" versions (eg one that cross a major release boundary
1671 or several minor releases, or when several months have passed
1672 on the -current branch).
1674 Sometimes, obscure build problems are the result of environment
1675 poisoning. This can happen because the make utility reads its
1676 environment when searching for values for global variables.
1677 To run your build attempts in an "environmental clean room",
1678 prefix all make commands with 'env -i '. See the env(1) manual
1679 page for more details.
1681 When upgrading from one major version to another it is generally
1682 best to upgrade to the latest code in the currently installed branch
1683 first, then do an upgrade to the new branch. This is the best-tested
1684 upgrade path, and has the highest probability of being successful.
1685 Please try this approach before reporting problems with a major
1690 When upgrading the boot ZFS pool to a new version, always follow
1693 1.) recompile and reinstall the ZFS boot loader and boot block
1694 (this is part of "make buildworld" and "make installworld")
1696 2.) update the ZFS boot block on your boot drive
1698 The following example updates the ZFS boot block on the first
1699 partition (freebsd-boot) of a GPT partitioned drive ad0:
1700 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0"
1702 Non-boot pools do not need these updates.
1706 If you are updating from a prior version of FreeBSD (even one just
1707 a few days old), you should follow this procedure. It is the most
1708 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
1710 make kernel-toolchain
1711 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE
1712 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE
1714 To test a kernel once
1715 ---------------------
1716 If you just want to boot a kernel once (because you are not sure
1717 if it works, or if you want to boot a known bad kernel to provide
1718 debugging information) run
1719 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
1720 nextboot -k testkernel
1722 To just build a kernel when you know that it won't mess you up
1723 --------------------------------------------------------------
1724 This assumes you are already running a 5.X system. Replace
1725 ${arch} with the architecture of your machine (e.g. "i386",
1726 "alpha", "amd64", "ia64", "pc98", "sparc64", etc).
1728 cd src/sys/${arch}/conf
1729 config KERNEL_NAME_HERE
1730 cd ../compile/KERNEL_NAME_HERE
1735 If this fails, go to the "To build a kernel" section.
1737 To rebuild everything and install it on the current system.
1738 -----------------------------------------------------------
1739 # Note: sometimes if you are running current you gotta do more than
1740 # is listed here if you are upgrading from a really old current.
1742 <make sure you have good level 0 dumps>
1744 make kernel KERNCONF=YOUR_KERNEL_HERE
1746 <reboot in single user> [3]
1754 To cross-install current onto a separate partition
1755 --------------------------------------------------
1756 # In this approach we use a separate partition to hold
1757 # current's root, 'usr', and 'var' directories. A partition
1758 # holding "/", "/usr" and "/var" should be about 2GB in
1761 <make sure you have good level 0 dumps>
1764 make buildkernel KERNCONF=YOUR_KERNEL_HERE
1765 <maybe newfs current's root partition>
1766 <mount current's root partition on directory ${CURRENT_ROOT}>
1767 make installworld DESTDIR=${CURRENT_ROOT}
1768 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
1769 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT}
1770 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd
1771 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
1772 <reboot into current>
1773 <do a "native" rebuild/install as described in the previous section>
1774 <maybe install compatibility libraries from ports/misc/compat*>
1778 To upgrade in-place from 5.x-stable to current
1779 ----------------------------------------------
1780 <make sure you have good level 0 dumps>
1782 make kernel KERNCONF=YOUR_KERNEL_HERE [8]
1784 <reboot in single user> [3]
1791 Make sure that you've read the UPDATING file to understand the
1792 tweaks to various things you need. At this point in the life
1793 cycle of current, things change often and you are on your own
1794 to cope. The defaults can also change, so please read ALL of
1795 the UPDATING entries.
1797 Also, if you are tracking -current, you must be subscribed to
1798 freebsd-current@freebsd.org. Make sure that before you update
1799 your sources that you have read and understood all the recent
1800 messages there. If in doubt, please track -stable which has
1801 much fewer pitfalls.
1803 [1] If you have third party modules, such as vmware, you
1804 should disable them at this point so they don't crash your
1807 [3] From the bootblocks, boot -s, and then do
1812 adjkerntz -i # if CMOS is wall time
1813 Also, when doing a major release upgrade, it is required that
1814 you boot into single user mode to do the installworld.
1816 [4] Note: This step is non-optional. Failure to do this step
1817 can result in a significant reduction in the functionality of the
1818 system. Attempting to do it by hand is not recommended and those
1819 that pursue this avenue should read this file carefully, as well
1820 as the archives of freebsd-current and freebsd-hackers mailing lists
1821 for potential gotchas.
1823 [5] Usually this step is a noop. However, from time to time
1824 you may need to do this if you get unknown user in the following
1825 step. It never hurts to do it all the time. You may need to
1826 install a new mergemaster (cd src/usr.sbin/mergemaster && make
1827 install) after the buildworld before this step if you last updated
1828 from current before 20020224 or from -stable before 20020408.
1830 [6] This only deletes old files and directories. Old libraries
1831 can be deleted by "make delete-old-libs", but you have to make
1832 sure that no program is using those libraries anymore.
1834 [8] In order to have a kernel that can run the 4.x binaries
1835 needed to do an installworld, you must include the COMPAT_FREEBSD4
1836 option in your kernel. Failure to do so may leave you with a system
1837 that is hard to boot to recover. A similar kernel option COMPAT_FREEBSD5
1838 is required to run the 5.x binaries on more recent kernels.
1840 Make sure that you merge any new devices from GENERIC since the
1841 last time you updated your kernel config file.
1843 [9] When checking out sources, you must include the -P flag to have
1844 cvs prune empty directories.
1846 If CPUTYPE is defined in your /etc/make.conf, make sure to use the
1847 "?=" instead of the "=" assignment operator, so that buildworld can
1848 override the CPUTYPE if it needs to.
1850 MAKEOBJDIRPREFIX must be defined in an environment variable, and
1851 not on the command line, or in /etc/make.conf. buildworld will
1852 warn if it is improperly defined.
1855 This file contains a list, in reverse chronological order, of major
1856 breakages in tracking -current. It is not guaranteed to be a complete
1857 list of such breakages, and only contains entries since October 16, 2004.
1858 If you need to see UPDATING entries from before that date, you will need
1859 to fetch an UPDATING file from an older FreeBSD release.
1861 Copyright information:
1863 Copyright 1998-2005 M. Warner Losh. All Rights Reserved.
1865 Redistribution, publication, translation and use, with or without
1866 modification, in full or in part, in any form or format of this
1867 document are permitted without further permission from the author.
1869 THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR
1870 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
1871 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
1872 DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT,
1873 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
1874 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
1875 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1876 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
1877 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
1878 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1879 POSSIBILITY OF SUCH DAMAGE.
1881 If you find this document useful, and you want to, you may buy the
1884 Contact Warner Losh if you have any questions about your use of