25
2620100713:
27 Due to the import of powerpc64 support, all existing powerpc kernel
28 configuration files must be updated with a machine directive like this:
29 machine powerpc powerpc
30
31 In addition, an updated config(8) is required to build powerpc kernels
32 after this change.
33
3420100713:
35 A new version of ZFS (version 15) has been merged to -HEAD.
36 This version uses a python library for the following subcommands:
37 zfs allow, zfs unallow, zfs groupspace, zfs userspace.
38 For full functionality of these commands the following port must
39 be installed: sysutils/py-zfs
40
4120100429:
42 'vm_page's are now hashed by physical address to an array of mutexes.
43 Currently this is only used to serialize access to hold_count. Over
44 time the page queue mutex will be peeled away. This changes the size
45 of pmap on every architecture. And requires all callers of vm_page_hold
46 and vm_page_unhold to be updated.
47
4820100402:
49 WITH_CTF can now be specified in src.conf (not recommended, there
50 are some problems with static executables), make.conf (would also
51 affect ports which do not use GNU make and do not override the
52 compile targets) or in the kernel config (via "makeoptions
53 WITH_CTF=yes").
54 When WITH_CTF was specified there before this was silently ignored,
55 so make sure that WITH_CTF is not used in places which could lead
56 to unwanted behavior.
57
5820100311:
59 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32
60 to allow 32-bit compatibility on non-x86 platforms. All kernel
61 configurations on amd64 and ia64 platforms using these options must
62 be modified accordingly.
63
6420100113:
65 The utmp user accounting database has been replaced with utmpx,
66 the user accounting interface standardized by POSIX.
67 Unfortunately the semantics of utmp and utmpx don't match,
68 making it practically impossible to support both interfaces.
69 The user accounting database is used by tools like finger(1),
70 last(1), talk(1), w(1) and ac(8).
71
72 All applications in the base system use utmpx. This means only
73 local binaries (e.g. from the ports tree) may still use these
74 utmp database files. These applications must be rebuilt to make
75 use of utmpx.
76
77 After the system has been upgraded, it is safe to remove the old
78 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*),
79 assuming their contents is of no importance anymore. Old wtmp
80 databases can only be used by last(1) and ac(8) after they have
81 been converted to the new format using wtmpcvt(1).
82
8320100108:
84 Introduce the kernel thread "deadlock resolver" (which can be enabled
85 via the DEADLKRES option, see NOTES for more details) and the
86 sleepq_type() function for sleepqueues.
87
8820091202:
89 The rc.firewall and rc.firewall6 were unified, and
90 rc.firewall6 and rc.d/ip6fw were removed.
91 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc
92 variables are obsoleted. Instead, the following new rc
93 variables are added to rc.d/ipfw:
94
95 firewall_client_net_ipv6, firewall_simple_iif_ipv6,
96 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6,
97 firewall_simple_onet_ipv6, firewall_trusted_ipv6
98
99 The meanings correspond to the relevant IPv4 variables.
100
10120091125:
102 8.0-RELEASE.
103
10420091113:
105 The default terminal emulation for syscons(4) has been changed
106 from cons25 to xterm on all platforms except pc98. This means
107 that the /etc/ttys file needs to be updated to ensure correct
108 operation of applications on the console.
109
110 The terminal emulation style can be toggled per window by using
111 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration
112 options can be used to change the compile-time default back to
113 cons25.
114
115 To prevent graphical artifacts, make sure the TERM environment
116 variable is set to match the terminal emulation that is being
117 performed by syscons(4).
118
11920091109:
120 The layout of the structure ieee80211req_scan_result has changed.
121 Applications that require wireless scan results (e.g. ifconfig(8))
122 from net80211 need to be recompiled.
123
124 Applications such as wpa_supplicant(8) may require a full world
125 build without using NO_CLEAN in order to get synchronized with the
126 new structure.
127
12820091025:
129 The iwn(4) driver has been updated to support the 5000 and 5150 series.
130 There's one kernel module for each firmware. Adding "device iwnfw"
131 to the kernel configuration file means including all three firmware
132 images inside the kernel. If you want to include just the one for
133 your wireless card, use the the devices iwn4965fw, iwn5000fw or
134 iwn5150fw.
135
13620090926:
137 The rc.d/network_ipv6, IPv6 configuration script has been integrated
138 into rc.d/netif. The changes are the following:
139
140 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF
141 for IPv4. For aliases, $ifconfig_IF_aliasN should be used.
142 Note that both variables need the "inet6" keyword at the head.
143
144 Do not set $ipv6_network_interfaces manually if you do not
145 understand what you are doing. It is not needed in most cases.
146
147 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but
148 they are obsolete.
149
150 2. $ipv6_enable is obsolete. Use $ipv6_prefer and
151 "inet6 accept_rtadv" keyword in ifconfig(8) instead.
152
153 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and
154 all configured interfaces have "inet6 accept_rtadv" in the
155 $ifconfig_IF_ipv6. These are for backward compatibility.
156
157 3. A new variable $ipv6_prefer has been added. If NO, IPv6
158 functionality of interfaces with no corresponding
159 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag,
160 and the default address selection policy of ip6addrctl(8)
161 is the IPv4-preferred one (see rc.d/ip6addrctl for more details).
162 Note that if you want to configure IPv6 functionality on the
163 disabled interfaces after boot, first you need to clear the flag by
164 using ifconfig(8) like:
165
166 ifconfig em0 inet6 -ifdisabled
167
168 If YES, the default address selection policy is set as
169 IPv6-preferred.
170
171 The default value of $ipv6_prefer is NO.
172
173 4. If your system need to receive Router Advertisement messages,
174 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8)
175 scripts automatically invoke rtsol(8) when the interface becomes
176 UP. The Router Advertisement messages are used for SLAAC
177 (State-Less Address AutoConfiguration).
178
17920090922:
180 802.11s D3.03 support was committed. This is incompatible with the
181 previous code, which was based on D3.0.
182
18320090912:
184 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value
185 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to
186 control whether accepting Router Advertisement messages or not.
187 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and
188 a sysctl variable net.inet6.ip6.auto_linklocal is its default value.
189 The ifconfig(8) utility now supports these flags.
190
19120090910:
192 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for
193 mount(8) and -a option for df(1) to see them.
194
19520090825:
196 The old tunable hw.bus.devctl_disable has been superseded by
197 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be
198 replaced by hw.bus.devctl_queue=0. The default for this new tunable
199 is 1000.
200
20120090813:
202 Remove the option STOP_NMI. The default action is now to use NMI only
203 for KDB via the newly introduced function stop_cpus_hard() and
204 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64.
205
20620090803:
207 The stable/8 branch created in subversion. This corresponds to the
208 RELENG_8 branch in CVS.
209
21020090719:
211 Bump the shared library version numbers for all libraries that do not
212 use symbol versioning as part of the 8.0-RELEASE cycle. Bump
213 __FreeBSD_version to 800105.
214
21520090714:
216 Due to changes in the implementation of virtual network stack support,
217 all network-related kernel modules must be recompiled. As this change
218 breaks the ABI, bump __FreeBSD_version to 800104.
219
22020090713:
221 The TOE interface to the TCP syncache has been modified to remove
222 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack.
223 The cxgb driver is the only TOE consumer affected by this change, and
224 needs to be recompiled along with the kernel. As this change breaks
225 the ABI, bump __FreeBSD_version to 800103.
226
22720090712:
228 Padding has been added to struct tcpcb, sackhint and tcpstat in
229 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst
230 maintaining the ABI. However, this change breaks the ABI, so bump
231 __FreeBSD_version to 800102. User space tools that rely on the size of
232 any of these structs (e.g. sockstat) need to be recompiled.
233
23420090630:
235 The NFS_LEGACYRPC option has been removed along with the old kernel
236 RPC implementation that this option selected. Kernel configurations
237 may need to be adjusted.
238
23920090629:
240 The network interface device nodes at /dev/net/<interface> have been
241 removed. All ioctl operations can be performed the normal way using
242 routing sockets. The kqueue functionality can generally be replaced
243 with routing sockets.
244
24520090628:
246 The documentation from the FreeBSD Documentation Project (Handbook,
247 FAQ, etc.) is now installed via packages by sysinstall(8) and under
248 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc.
249
25020090624:
251 The ABI of various structures related to the SYSV IPC API have been
252 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel
253 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to
254 800100.
255
25620090622:
257 Layout of struct vnet has changed as routing related variables were
258 moved to their own Vimage module. Modules need to be recompiled. Bump
259 __FreeBSD_version to 800099.
260
26120090619:
262 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024
263 respectively. As long as no more than 16 groups per process are used,
264 no changes should be visible. When more than 16 groups are used, old
265 binaries may fail if they call getgroups() or getgrouplist() with
266 statically sized storage. Recompiling will work around this, but
267 applications should be modified to use dynamically allocated storage
268 for group arrays as POSIX.1-2008 does not cap an implementation's
269 number of supported groups at NGROUPS_MAX+1 as previous versions did.
270
271 NFS and portalfs mounts may also be affected as the list of groups is
272 truncated to 16. Users of NFS who use more than 16 groups, should
273 take care that negative group permissions are not used on the exported
274 file systems as they will not be reliable unless a GSSAPI based
275 authentication method is used.
276
27720090616:
278 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This
279 option compiles in the support for adaptive spinning for lockmgrs
280 which want to enable it. The lockinit() function now accepts the flag
281 LK_ADAPTIVE in order to make the lock object subject to adaptive
282 spinning when both held in write and read mode.
283
28420090613:
285 The layout of the structure returned by IEEE80211_IOC_STA_INFO has
286 changed. User applications that use this ioctl need to be rebuilt.
287
28820090611:
289 The layout of struct thread has changed. Kernel and modules need to
290 be rebuilt.
291
29220090608:
293 The layout of structs ifnet, domain, protosw and vnet_net has changed.
294 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097.
295
29620090602:
297 window(1) has been removed from the base system. It can now be
298 installed from ports. The port is called misc/window.
299
30020090601:
301 The way we are storing and accessing `routing table' entries has
302 changed. Programs reading the FIB, like netstat, need to be
303 re-compiled.
304
30520090601:
306 A new netisr implementation has been added for FreeBSD 8. Network
307 file system modules, such as igmp, ipdivert, and others, should be
308 rebuilt.
309 Bump __FreeBSD_version to 800096.
310
31120090530:
312 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no
313 more valid.
314
31520090530:
316 Add VOP_ACCESSX(9). File system modules need to be rebuilt.
317 Bump __FreeBSD_version to 800094.
318
31920090529:
320 Add mnt_xflag field to 'struct mount'. File system modules need to be
321 rebuilt.
322 Bump __FreeBSD_version to 800093.
323
32420090528:
325 The compiling option ADAPTIVE_SX has been retired while it has been
326 introduced the option NO_ADAPTIVE_SX which handles the reversed logic.
327 The KPI for sx_init_flags() changes as accepting flags:
328 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has
329 been introduced in order to handle the reversed logic.
330 Bump __FreeBSD_version to 800092.
331
33220090527:
333 Add support for hierarchical jails. Remove global securelevel.
334 Bump __FreeBSD_version to 800091.
335
33620090523:
337 The layout of struct vnet_net has changed, therefore modules
338 need to be rebuilt.
339 Bump __FreeBSD_version to 800090.
340
34120090523:
342 The newly imported zic(8) produces a new format in the output. Please
343 run tzsetup(8) to install the newly created data to /etc/localtime.
344
34520090520:
346 The sysctl tree for the usb stack has renamed from hw.usb2.* to
347 hw.usb.* and is now consistent again with previous releases.
348
34920090520:
350 802.11 monitor mode support was revised and driver api's were changed.
351 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead
352 of DLT_IEEE802_11. No user-visible data structures were changed but
353 applications that use DLT_IEEE802_11 may require changes.
354 Bump __FreeBSD_version to 800088.
355
35620090430:
357 The layout of the following structs has changed: sysctl_oid,
358 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet,
359 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or
360 panics may be experienced. World rebuild is required for
361 correctly checking networking state from userland.
362 Bump __FreeBSD_version to 800085.
363
36420090429:
365 MLDv2 and Source-Specific Multicast (SSM) have been merged
366 to the IPv6 stack. VIMAGE hooks are in but not yet used.
367 The implementation of SSM within FreeBSD's IPv6 stack closely
368 follows the IPv4 implementation.
369
370 For kernel developers:
371
372 * The most important changes are that the ip6_output() and
373 ip6_input() paths no longer take the IN6_MULTI_LOCK,
374 and this lock has been downgraded to a non-recursive mutex.
375
376 * As with the changes to the IPv4 stack to support SSM, filtering
377 of inbound multicast traffic must now be performed by transport
378 protocols within the IPv6 stack. This does not apply to TCP and
379 SCTP, however, it does apply to UDP in IPv6 and raw IPv6.
380
381 * The KPIs used by IPv6 multicast are similar to those used by
382 the IPv4 stack, with the following differences:
383 * im6o_mc_filter() is analogous to imo_multicast_filter().
384 * The legacy KAME entry points in6_joingroup and in6_leavegroup()
385 are shimmed to in6_mc_join() and in6_mc_leave() respectively.
386 * IN6_LOOKUP_MULTI() has been deprecated and removed.
387 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs
388 for MLDv1 have an additional 'timer' argument which is used to
389 jitter the initial membership report for the solicited-node
390 multicast membership on-link.
391 * This is not strictly needed for MLDv2, which already jitters
392 its report transmissions. However, the 'timer' argument is
393 preserved in case MLDv1 is active on the interface.
394
395 * The KAME linked-list based IPv6 membership implementation has
396 been refactored to use a vector similar to that used by the IPv4
397 stack.
398 Code which maintains a list of its own multicast memberships
399 internally, e.g. carp, has been updated to reflect the new
400 semantics.
401
402 * There is a known Lock Order Reversal (LOR) due to in6_setscope()
403 acquiring the IF_AFDATA_LOCK and being called within ip6_output().
404 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an
405 implementation constraint which needs to be addressed in HEAD.
406
407 For application developers:
408
409 * The changes are broadly similar to those made for the IPv4
410 stack.
411
412 * The use of IPv4 and IPv6 multicast socket options on the same
413 socket, using mapped addresses, HAS NOT been tested or supported.
414
415 * There are a number of issues with the implementation of various
416 IPv6 multicast APIs which need to be resolved in the API surface
417 before the implementation is fully compatible with KAME userland
418 use, and these are mostly to do with interface index treatment.
419
420 * The literature available discusses the use of either the delta / ASM
421 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API
422 using setsourcefilter(3)/getsourcefilter(3). For more information
423 please refer to RFC 3768, 'Socket Interface Extensions for
424 Multicast Source Filters'.
425
426 * Applications which use the published RFC 3678 APIs should be fine.
427
428 For systems administrators:
429
430 * The mtest(8) utility has been refactored to support IPv6, in
431 addition to IPv4. Interface addresses are no longer accepted
432 as arguments, their names must be used instead. The utility
433 will map the interface name to its first IPv4 address as
434 returned by getifaddrs(3).
435
436 * The ifmcstat(8) utility has also been updated to print the MLDv2
437 endpoint state and source filter lists via sysctl(3).
438
439 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable
440 loopback of IPv6 multicast datagrams by default; it defaults to 1
441 to preserve the existing behaviour. Disabling multicast loopback is
442 recommended for optimal system performance.
443
444 * The IPv6 MROUTING code has been changed to examine this sysctl
445 instead of attempting to perform a group lookup before looping
446 back forwarded datagrams.
447
448 Bump __FreeBSD_version to 800084.
449
45020090422:
451 Implement low-level Bluetooth HCI API.
452 Bump __FreeBSD_version to 800083.
453
45420090419:
455 The layout of struct malloc_type, used by modules to register new
456 memory allocation types, has changed. Most modules will need to
457 be rebuilt or panics may be experienced.
458 Bump __FreeBSD_version to 800081.
459
46020090415:
461 Anticipate overflowing inp_flags - add inp_flags2.
462 This changes most offsets in inpcb, so checking v4 connection
463 state will require a world rebuild.
464 Bump __FreeBSD_version to 800080.
465
46620090415:
467 Add an llentry to struct route and struct route_in6. Modules
468 embedding a struct route will need to be recompiled.
469 Bump __FreeBSD_version to 800079.
470
47120090414:
472 The size of rt_metrics_lite and by extension rtentry has changed.
473 Networking administration apps will need to be recompiled.
474 The route command now supports show as an alias for get, weighting
475 of routes, sticky and nostick flags to alter the behavior of stateful
476 load balancing.
477 Bump __FreeBSD_version to 800078.
478
47920090408:
480 Do not use Giant for kbdmux(4) locking. This is wrong and
481 apparently causing more problems than it solves. This will
482 re-open the issue where interrupt handlers may race with
483 kbdmux(4) in polling mode. Typical symptoms include (but
484 not limited to) duplicated and/or missing characters when
485 low level console functions (such as gets) are used while
486 interrupts are enabled (for example geli password prompt,
487 mountroot prompt etc.). Disabling kbdmux(4) may help.
488
48920090407:
490 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed;
491 kernel modules referencing any of the above need to be recompiled.
492 Bump __FreeBSD_version to 800075.
493
49420090320:
495 GEOM_PART has become the default partition slicer for storage devices,
496 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It
497 introduces some changes:
498
499 MSDOS/EBR: the devices created from MSDOS extended partition entries
500 (EBR) can be named differently than with GEOM_MBR and are now symlinks
501 to devices with offset-based names. fstabs may need to be modified.
502
503 BSD: the "geometry does not match label" warning is harmless in most
504 cases but it points to problems in file system misalignment with
505 disk geometry. The "c" partition is now implicit, covers the whole
506 top-level drive and cannot be (mis)used by users.
507
508 General: Kernel dumps are now not allowed to be written to devices
509 whose partition types indicate they are meant to be used for file
510 systems (or, in case of MSDOS partitions, as something else than
511 the "386BSD" type).
512
513 Most of these changes date approximately from 200812.
514
51520090319:
516 The uscanner(4) driver has been removed from the kernel. This follows
517 Linux removing theirs in 2.6 and making libusb the default interface
518 (supported by sane).
519
52020090319:
521 The multicast forwarding code has been cleaned up. netstat(1)
522 only relies on KVM now for printing bandwidth upcall meters.
523 The IPv4 and IPv6 modules are split into ip_mroute_mod and
524 ip6_mroute_mod respectively. The config(5) options for statically
525 compiling this code remain the same, i.e. 'options MROUTING'.
526
52720090315:
528 Support for the IFF_NEEDSGIANT network interface flag has been
529 removed, which means that non-MPSAFE network device drivers are no
530 longer supported. In particular, if_ar, if_sr, and network device
531 drivers from the old (legacy) USB stack can no longer be built or
532 used.
533
53420090313:
535 POSIX.1 Native Language Support (NLS) has been enabled in libc and
536 a bunch of new language catalog files have also been added.
537 This means that some common libc messages are now localized and
538 they depend on the LC_MESSAGES environmental variable.
539
54020090313:
541 The k8temp(4) driver has been renamed to amdtemp(4) since
542 support for Family 10 and Family 11 CPU families was added.
543
54420090309:
545 IGMPv3 and Source-Specific Multicast (SSM) have been merged
546 to the IPv4 stack. VIMAGE hooks are in but not yet used.
547
548 For kernel developers, the most important changes are that the
549 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(),
550 and this lock has been downgraded to a non-recursive mutex.
551
552 Transport protocols (UDP, Raw IP) are now responsible for filtering
553 inbound multicast traffic according to group membership and source
554 filters. The imo_multicast_filter() KPI exists for this purpose.
555 Transports which do not use multicast (SCTP, TCP) already reject
556 multicast by default. Forwarding and receive performance may improve
557 as a mutex acquisition is no longer needed in the ip_input()
558 low-level input path. in_addmulti() and in_delmulti() are shimmed
559 to new KPIs which exist to support SSM in-kernel.
560
561 For application developers, it is recommended that loopback of
562 multicast datagrams be disabled for best performance, as this
563 will still cause the lock to be taken for each looped-back
564 datagram transmission. The net.inet.ip.mcast.loop sysctl may
565 be tuned to 0 to disable loopback by default; it defaults to 1
566 to preserve the existing behaviour.
567
568 For systems administrators, to obtain best performance with
569 multicast reception and multiple groups, it is always recommended
570 that a card with a suitably precise hash filter is used. Hash
571 collisions will still result in the lock being taken within the
572 transport protocol input path to check group membership.
573
574 If deploying FreeBSD in an environment with IGMP snooping switches,
575 it is recommended that the net.inet.igmp.sendlocal sysctl remain
576 enabled; this forces 224.0.0.0/24 group membership to be announced
577 via IGMP.
578
579 The size of 'struct igmpstat' has changed; netstat needs to be
580 recompiled to reflect this.
581 Bump __FreeBSD_version to 800070.
582
58320090309:
584 libusb20.so.1 is now installed as libusb.so.1 and the ports system
585 updated to use it. This requires a buildworld/installworld in order to
586 update the library and dependencies (usbconfig, etc). Its advisable to
587 rebuild all ports which uses libusb. More specific directions are given
588 in the ports collection UPDATING file. Any /etc/libmap.conf entries for
589 libusb are no longer required and can be removed.
590
59120090302:
592 A workaround is committed to allow the creation of System V shared
593 memory segment of size > 2 GB on the 64-bit architectures.
594 Due to a limitation of the existing ABI, the shm_segsz member
595 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is
596 wrong for large segments. Note that limits must be explicitly
597 raised to allow such segments to be created.
598
59920090301:
600 The layout of struct ifnet has changed, requiring a rebuild of all
601 network device driver modules.
602
60320090227:
604 The /dev handling for the new USB stack has changed, a
605 buildworld/installworld is required for libusb20.
606
60720090223:
608 The new USB2 stack has now been permanently moved in and all kernel and
609 module names reverted to their previous values (eg, usb, ehci, ohci,
610 ums, ...). The old usb stack can be compiled in by prefixing the name
611 with the letter 'o', the old usb modules have been removed.
612 Updating entry 20090216 for xorg and 20090215 for libmap may still
613 apply.
614
61520090217:
616 The rc.conf(5) option if_up_delay has been renamed to
617 defaultroute_delay to better reflect its purpose. If you have
618 customized this setting in /etc/rc.conf you need to update it to
619 use the new name.
620
62120090216:
622 xorg 7.4 wants to configure its input devices via hald which does not
623 yet work with USB2. If the keyboard/mouse does not work in xorg then
624 add
625 Option "AllowEmptyInput" "off"
626 to your ServerLayout section. This will cause X to use the configured
627 kbd and mouse sections from your xorg.conf.
628
62920090215:
630 The GENERIC kernels for all architectures now default to the new USB2
631 stack. No kernel config options or code have been removed so if a
632 problem arises please report it and optionally revert to the old USB
633 stack. If you are loading USB kernel modules or have a custom kernel
634 that includes GENERIC then ensure that usb names are also changed over,
635 eg uftdi -> usb2_serial_ftdi.
636
637 Older programs linked against the ports libusb 0.1 need to be
638 redirected to the new stack's libusb20. /etc/libmap.conf can
639 be used for this:
640 # Map old usb library to new one for usb2 stack
641 libusb-0.1.so.8 libusb20.so.1
642
64320090209:
644 All USB ethernet devices now attach as interfaces under the name ueN
645 (eg. ue0). This is to provide a predictable name as vendors often
646 change usb chipsets in a product without notice.
647
64820090203:
649 The ichsmb(4) driver has been changed to require SMBus slave
650 addresses be left-justified (xxxxxxx0b) rather than right-justified.
651 All of the other SMBus controller drivers require left-justified
652 slave addresses, so this change makes all the drivers provide the
653 same interface.
654
65520090201:
656 INET6 statistics (struct ip6stat) was updated.
657 netstat(1) needs to be recompiled.
658
65920090119:
660 NTFS has been removed from GENERIC kernel on amd64 to match
661 GENERIC on i386. Should not cause any issues since mount_ntfs(8)
662 will load ntfs.ko module automatically when NTFS support is
663 actually needed, unless ntfs.ko is not installed or security
664 level prohibits loading kernel modules. If either is the case,
665 "options NTFS" has to be added into kernel config.
666
66720090115:
668 TCP Appropriate Byte Counting (RFC 3465) support added to kernel.
669 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to
670 800061. User space tools that rely on the size of struct tcpcb in
671 tcp_var.h (e.g. sockstat) need to be recompiled.
672
67320081225:
674 ng_tty(4) module updated to match the new TTY subsystem.
675 Due to API change, user-level applications must be updated.
676 New API support added to mpd5 CVS and expected to be present
677 in next mpd5.3 release.
678
67920081219:
680 With __FreeBSD_version 800060 the makefs tool is part of
681 the base system (it was a port).
682
68320081216:
684 The afdata and ifnet locks have been changed from mutexes to
685 rwlocks, network modules will need to be re-compiled.
686
68720081214:
688 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite.
689 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated.
690 The new code reduced struct rtentry{} by 16 bytes on 32-bit
691 architecture and 40 bytes on 64-bit architecture. The userland
692 applications "arp" and "ndp" have been updated accordingly.
693 The output from "netstat -r" shows only routing entries and
694 none of the L2 information.
695
69620081130:
697 __FreeBSD_version 800057 marks the switchover from the
698 binary ath hal to source code. Users must add the line:
699
700 options AH_SUPPORT_AR5416
701
702 to their kernel config files when specifying:
703
704 device ath_hal
705
706 The ath_hal module no longer exists; the code is now compiled
707 together with the driver in the ath module. It is now
708 possible to tailor chip support (i.e. reduce the set of chips
709 and thereby the code size); consult ath_hal(4) for details.
710
71120081121:
712 __FreeBSD_version 800054 adds memory barriers to
713 <machine/atomic.h>, new interfaces to ifnet to facilitate
714 multiple hardware transmit queues for cards that support
715 them, and a lock-less ring-buffer implementation to
716 enable drivers to more efficiently manage queueing of
717 packets.
718
71920081117:
720 A new version of ZFS (version 13) has been merged to -HEAD.
721 This version has zpool attribute "listsnapshots" off by
722 default, which means "zfs list" does not show snapshots,
723 and is the same as Solaris behavior.
724
72520081028:
726 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled.
727
72820081009:
729 The uhci, ohci, ehci and slhci USB Host controller drivers have
730 been put into separate modules. If you load the usb module
731 separately through loader.conf you will need to load the
732 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0
733 controller add the following to loader.conf:
734
735 uhci_load="YES"
736 ehci_load="YES"
737
73820081009:
739 The ABI used by the PMC toolset has changed. Please keep
740 userland (libpmc(3)) and the kernel module (hwpmc(4)) in
741 sync.
742
74320081009:
744 atapci kernel module now includes only generic PCI ATA
745 driver. AHCI driver moved to ataahci kernel module.
746 All vendor-specific code moved into separate kernel modules:
747 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek,
748 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron,
749 atamarvell, atamicron, atanational, atanetcell, atanvidia,
750 atapromise, ataserverworks, atasiliconimage, atasis, atavia
751
75220080820:
753 The TTY subsystem of the kernel has been replaced by a new
754 implementation, which provides better scalability and an
755 improved driver model. Most common drivers have been migrated to
756 the new TTY subsystem, while others have not. The following
757 drivers have not yet been ported to the new TTY layer:
758
759 PCI/ISA:
760 cy, digi, rc, rp, sio
761
762 USB:
763 ubser, ucycom
764
765 Line disciplines:
766 ng_h4, ng_tty, ppp, sl, snp
767
768 Adding these drivers to your kernel configuration file shall
769 cause compilation to fail.
770
77120080818:
772 ntpd has been upgraded to 4.2.4p5.
773
77420080801:
775 OpenSSH has been upgraded to 5.1p1.
776
777 For many years, FreeBSD's version of OpenSSH preferred DSA
778 over RSA for host and user authentication keys. With this
779 upgrade, we've switched to the vendor's default of RSA over
780 DSA. This may cause upgraded clients to warn about unknown
781 host keys even for previously known hosts. Users should
782 follow the usual procedure for verifying host keys before
783 accepting the RSA key.
784
785 This can be circumvented by setting the "HostKeyAlgorithms"
786 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh
787 command line.
788
789 Please note that the sequence of keys offered for
790 authentication has been changed as well. You may want to
791 specify IdentityFile in a different order to revert this
792 behavior.
793
79420080713:
795 The sio(4) driver has been removed from the i386 and amd64
796 kernel configuration files. This means uart(4) is now the
797 default serial port driver on those platforms as well.
798
799 To prevent collisions with the sio(4) driver, the uart(4) driver
800 uses different names for its device nodes. This means the
801 onboard serial port will now most likely be called "ttyu0"
802 instead of "ttyd0". You may need to reconfigure applications to
803 use the new device names.
804
805 When using the serial port as a boot console, be sure to update
806 /boot/device.hints and /etc/ttys before booting the new kernel.
807 If you forget to do so, you can still manually specify the hints
808 at the loader prompt:
809
810 set hint.uart.0.at="isa"
811 set hint.uart.0.port="0x3F8"
812 set hint.uart.0.flags="0x10"
813 set hint.uart.0.irq="4"
814 boot -s
815
81620080609:
817 The gpt(8) utility has been removed. Use gpart(8) to partition
818 disks instead.
819
82020080603:
821 The version that Linuxulator emulates was changed from 2.4.2
822 to 2.6.16. If you experience any problems with Linux binaries
823 please try to set sysctl compat.linux.osrelease to 2.4.2 and
824 if it fixes the problem contact emulation mailing list.
825
82620080525:
827 ISDN4BSD (I4B) was removed from the src tree. You may need to
828 update a your kernel configuration and remove relevant entries.
829
83020080509:
831 I have checked in code to support multiple routing tables.
832 See the man pages setfib(1) and setfib(2).
833 This is a hopefully backwards compatible version,
834 but to make use of it you need to compile your kernel
835 with options ROUTETABLES=2 (or more up to 16).
836
83720080420:
838 The 802.11 wireless support was redone to enable multi-bss
839 operation on devices that are capable. The underlying device
840 is no longer used directly but instead wlanX devices are
841 cloned with ifconfig. This requires changes to rc.conf files.
842 For example, change:
843 ifconfig_ath0="WPA DHCP"
844 to
845 wlans_ath0=wlan0
846 ifconfig_wlan0="WPA DHCP"
847 see rc.conf(5) for more details. In addition, mergemaster of
848 /etc/rc.d is highly recommended. Simultaneous update of userland
849 and kernel wouldn't hurt either.
850
851 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta
852 modules were merged into the base wlan module. All references
853 to these modules (e.g. in kernel config files) must be removed.
854
85520080408:
856 psm(4) has gained write(2) support in native operation level.
857 Arbitrary commands can be written to /dev/psm%d and status can
858 be read back from it. Therefore, an application is responsible
859 for status validation and error recovery. It is a no-op in
860 other operation levels.
861
86220080312:
863 Support for KSE threading has been removed from the kernel. To
864 run legacy applications linked against KSE libmap.conf may
865 be used. The following libmap.conf may be used to ensure
866 compatibility with any prior release:
867
868 libpthread.so.1 libthr.so.1
869 libpthread.so.2 libthr.so.2
870 libkse.so.3 libthr.so.3
871
87220080301:
873 The layout of struct vmspace has changed. This affects libkvm
874 and any executables that link against libkvm and use the
875 kvm_getprocs() function. In particular, but not exclusively,
876 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1).
877 The effects are minimal, but it's advisable to upgrade world
878 nonetheless.
879
88020080229:
881 The latest em driver no longer has support in it for the
882 82575 adapter, this is now moved to the igb driver. The
883 split was done to make new features that are incompatible
884 with older hardware easier to do.
885
88620080220:
887 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4),
888 likewise the kernel option is now GEOM_LINUX_LVM.
889
89020080211:
891 The default NFS mount mode has changed from UDP to TCP for
892 increased reliability. If you rely on (insecurely) NFS
893 mounting across a firewall you may need to update your
894 firewall rules.
895
89620080208:
897 Belatedly note the addition of m_collapse for compacting
898 mbuf chains.
899
90020080126:
901 The fts(3) structures have been changed to use adequate
902 integer types for their members and so to be able to cope
903 with huge file trees. The old fts(3) ABI is preserved
904 through symbol versioning in libc, so third-party binaries
905 using fts(3) should still work, although they will not take
906 advantage of the extended types. At the same time, some
907 third-party software might fail to build after this change
908 due to unportable assumptions made in its source code about
909 fts(3) structure members. Such software should be fixed
910 by its vendor or, in the worst case, in the ports tree.
911 FreeBSD_version 800015 marks this change for the unlikely
912 case that a portable fix is impossible.
913
91420080123:
915 To upgrade to -current after this date, you must be running
916 FreeBSD not older than 6.0-RELEASE. Upgrading to -current
917 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems.
918
91920071128:
920 The ADAPTIVE_GIANT kernel option has been retired because its
921 functionality is the default now.
922
92320071118:
924 The AT keyboard emulation of sunkbd(4) has been turned on
925 by default. In order to make the special symbols of the Sun
926 keyboards driven by sunkbd(4) work under X these now have
927 to be configured the same way as Sun USB keyboards driven
928 by ukbd(4) (which also does AT keyboard emulation), f.e.:
929
930 Option "XkbLayout" "us"
931 Option "XkbRules" "xorg"
932 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us"
933
93420071024:
935 It has been decided that it is desirable to provide ABI
936 backwards compatibility to the FreeBSD 4/5/6 versions of the
937 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was
938 broken with the introduction of PCI domain support (see the
939 20070930 entry). Unfortunately, this required the ABI of
940 PCIOCGETCONF to be broken again in order to be able to
941 provide backwards compatibility to the old version of that
942 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled
943 again. As for prominent ports this affects neither pciutils
944 nor xorg-server this time, the hal port needs to be rebuilt
945 however.
946
94720071020:
948 The misnamed kthread_create() and friends have been renamed
949 to kproc_create() etc. Many of the callers already
950 used kproc_start()..
951 I will return kthread_create() and friends in a while
952 with implementations that actually create threads, not procs.
953 Renaming corresponds with version 800002.
954
95520071010:
956 RELENG_7 branched.
957
958COMMON ITEMS:
959
960 General Notes
961 -------------
962 Avoid using make -j when upgrading. While generally safe, there are
963 sometimes problems using -j to upgrade. If your upgrade fails with
964 -j, please try again without -j. From time to time in the past there
965 have been problems using -j with buildworld and/or installworld. This
966 is especially true when upgrading between "distant" versions (eg one
967 that cross a major release boundary or several minor releases, or when
968 several months have passed on the -current branch).
969
970 Sometimes, obscure build problems are the result of environment
971 poisoning. This can happen because the make utility reads its
972 environment when searching for values for global variables. To run
973 your build attempts in an "environmental clean room", prefix all make
974 commands with 'env -i '. See the env(1) manual page for more details.
975
976 When upgrading from one major version to another it is generally best
977 to upgrade to the latest code in the currently installed branch first,
978 then do an upgrade to the new branch. This is the best-tested upgrade
979 path, and has the highest probability of being successful. Please try
980 this approach before reporting problems with a major version upgrade.
981
982 ZFS notes
983 ---------
984 When upgrading the boot ZFS pool to a new version, always follow
985 these two steps:
986
987 1.) recompile and reinstall the ZFS boot loader and boot block
988 (this is part of "make buildworld" and "make installworld")
989
990 2.) update the ZFS boot block on your boot drive
991
992 The following example updates the ZFS boot block on the first
993 partition (freebsd-boot) of a GPT partitioned drive ad0:
994 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0"
995
996 Non-boot pools do not need these updates.
997
998 To build a kernel
999 -----------------
1000 If you are updating from a prior version of FreeBSD (even one just
1001 a few days old), you should follow this procedure. It is the most
1002 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
1003
1004 make kernel-toolchain
1005 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE
1006 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE
1007
1008 To test a kernel once
1009 ---------------------
1010 If you just want to boot a kernel once (because you are not sure
1011 if it works, or if you want to boot a known bad kernel to provide
1012 debugging information) run
1013 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
1014 nextboot -k testkernel
1015
1016 To just build a kernel when you know that it won't mess you up
1017 --------------------------------------------------------------
1018 This assumes you are already running a CURRENT system. Replace
1019 ${arch} with the architecture of your machine (e.g. "i386",
1020 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc).
1021
1022 cd src/sys/${arch}/conf
1023 config KERNEL_NAME_HERE
1024 cd ../compile/KERNEL_NAME_HERE
1025 make depend
1026 make
1027 make install
1028
1029 If this fails, go to the "To build a kernel" section.
1030
1031 To rebuild everything and install it on the current system.
1032 -----------------------------------------------------------
1033 # Note: sometimes if you are running current you gotta do more than
1034 # is listed here if you are upgrading from a really old current.
1035
1036 <make sure you have good level 0 dumps>
1037 make buildworld
1038 make kernel KERNCONF=YOUR_KERNEL_HERE
1039 [1]
1040 <reboot in single user> [3]
1041 mergemaster -p [5]
1042 make installworld
1043 make delete-old
1044 mergemaster -i [4]
1045 <reboot>
1046
1047
1048 To cross-install current onto a separate partition
1049 --------------------------------------------------
1050 # In this approach we use a separate partition to hold
1051 # current's root, 'usr', and 'var' directories. A partition
1052 # holding "/", "/usr" and "/var" should be about 2GB in
1053 # size.
1054
1055 <make sure you have good level 0 dumps>
1056 <boot into -stable>
1057 make buildworld
1058 make buildkernel KERNCONF=YOUR_KERNEL_HERE
1059 <maybe newfs current's root partition>
1060 <mount current's root partition on directory ${CURRENT_ROOT}>
1061 make installworld DESTDIR=${CURRENT_ROOT}
1062 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
1063 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT}
1064 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd
1065 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
1066 <reboot into current>
1067 <do a "native" rebuild/install as described in the previous section>
1068 <maybe install compatibility libraries from ports/misc/compat*>
1069 <reboot>
1070
1071
1072 To upgrade in-place from 8.x-stable to current
1073 ----------------------------------------------
1074 <make sure you have good level 0 dumps>
1075 make buildworld [9]
1076 make kernel KERNCONF=YOUR_KERNEL_HERE [8]
1077 [1]
1078 <reboot in single user> [3]
1079 mergemaster -p [5]
1080 make installworld
1081 make delete-old
1082 mergemaster -i [4]
1083 <reboot>
1084
1085 Make sure that you've read the UPDATING file to understand the
1086 tweaks to various things you need. At this point in the life
1087 cycle of current, things change often and you are on your own
1088 to cope. The defaults can also change, so please read ALL of
1089 the UPDATING entries.
1090
1091 Also, if you are tracking -current, you must be subscribed to
1092 freebsd-current@freebsd.org. Make sure that before you update
1093 your sources that you have read and understood all the recent
1094 messages there. If in doubt, please track -stable which has
1095 much fewer pitfalls.
1096
1097 [1] If you have third party modules, such as vmware, you
1098 should disable them at this point so they don't crash your
1099 system on reboot.
1100
1101 [3] From the bootblocks, boot -s, and then do
1102 fsck -p
1103 mount -u /
1104 mount -a
1105 cd src
1106 adjkerntz -i # if CMOS is wall time
1107 Also, when doing a major release upgrade, it is required that
1108 you boot into single user mode to do the installworld.
1109
1110 [4] Note: This step is non-optional. Failure to do this step
1111 can result in a significant reduction in the functionality of the
1112 system. Attempting to do it by hand is not recommended and those
1113 that pursue this avenue should read this file carefully, as well
1114 as the archives of freebsd-current and freebsd-hackers mailing lists
1115 for potential gotchas. The -U option is also useful to consider.
1116 See mergemaster(8) for more information.
1117
1118 [5] Usually this step is a noop. However, from time to time
1119 you may need to do this if you get unknown user in the following
1120 step. It never hurts to do it all the time. You may need to
1121 install a new mergemaster (cd src/usr.sbin/mergemaster && make
1122 install) after the buildworld before this step if you last updated
1123 from current before 20020224 or from -stable before 20020408.
1124
1125 [8] In order to have a kernel that can run the 4.x binaries needed to
1126 do an installworld, you must include the COMPAT_FREEBSD4 option in
1127 your kernel. Failure to do so may leave you with a system that is
1128 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is
1129 required to run the 5.x binaries on more recent kernels. And so on
1130 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7.
1131
1132 Make sure that you merge any new devices from GENERIC since the
1133 last time you updated your kernel config file.
1134
1135 [9] When checking out sources, you must include the -P flag to have
1136 cvs prune empty directories.
1137
1138 If CPUTYPE is defined in your /etc/make.conf, make sure to use the
1139 "?=" instead of the "=" assignment operator, so that buildworld can
1140 override the CPUTYPE if it needs to.
1141
1142 MAKEOBJDIRPREFIX must be defined in an environment variable, and
1143 not on the command line, or in /etc/make.conf. buildworld will
1144 warn if it is improperly defined.
1145FORMAT:
1146
1147This file contains a list, in reverse chronological order, of major
1148breakages in tracking -current. Not all things will be listed here,
1149and it only starts on October 16, 2004. Updating files can found in
1150previous releases if your system is older than this.
1151
1152Copyright information:
1153
1154Copyright 1998-2009 M. Warner Losh. All Rights Reserved.
1155
1156Redistribution, publication, translation and use, with or without
1157modification, in full or in part, in any form or format of this
1158document are permitted without further permission from the author.
1159
1160THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR
1161IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
1162WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
1163DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT,
1164INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
1165(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
1166SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1167HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
1168STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
1169IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1170POSSIBILITY OF SUCH DAMAGE.
1171
1172Contact Warner Losh if you have any questions about your use of
1173this document.
1174
| 37
3820100713:
39 Due to the import of powerpc64 support, all existing powerpc kernel
40 configuration files must be updated with a machine directive like this:
41 machine powerpc powerpc
42
43 In addition, an updated config(8) is required to build powerpc kernels
44 after this change.
45
4620100713:
47 A new version of ZFS (version 15) has been merged to -HEAD.
48 This version uses a python library for the following subcommands:
49 zfs allow, zfs unallow, zfs groupspace, zfs userspace.
50 For full functionality of these commands the following port must
51 be installed: sysutils/py-zfs
52
5320100429:
54 'vm_page's are now hashed by physical address to an array of mutexes.
55 Currently this is only used to serialize access to hold_count. Over
56 time the page queue mutex will be peeled away. This changes the size
57 of pmap on every architecture. And requires all callers of vm_page_hold
58 and vm_page_unhold to be updated.
59
6020100402:
61 WITH_CTF can now be specified in src.conf (not recommended, there
62 are some problems with static executables), make.conf (would also
63 affect ports which do not use GNU make and do not override the
64 compile targets) or in the kernel config (via "makeoptions
65 WITH_CTF=yes").
66 When WITH_CTF was specified there before this was silently ignored,
67 so make sure that WITH_CTF is not used in places which could lead
68 to unwanted behavior.
69
7020100311:
71 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32
72 to allow 32-bit compatibility on non-x86 platforms. All kernel
73 configurations on amd64 and ia64 platforms using these options must
74 be modified accordingly.
75
7620100113:
77 The utmp user accounting database has been replaced with utmpx,
78 the user accounting interface standardized by POSIX.
79 Unfortunately the semantics of utmp and utmpx don't match,
80 making it practically impossible to support both interfaces.
81 The user accounting database is used by tools like finger(1),
82 last(1), talk(1), w(1) and ac(8).
83
84 All applications in the base system use utmpx. This means only
85 local binaries (e.g. from the ports tree) may still use these
86 utmp database files. These applications must be rebuilt to make
87 use of utmpx.
88
89 After the system has been upgraded, it is safe to remove the old
90 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*),
91 assuming their contents is of no importance anymore. Old wtmp
92 databases can only be used by last(1) and ac(8) after they have
93 been converted to the new format using wtmpcvt(1).
94
9520100108:
96 Introduce the kernel thread "deadlock resolver" (which can be enabled
97 via the DEADLKRES option, see NOTES for more details) and the
98 sleepq_type() function for sleepqueues.
99
10020091202:
101 The rc.firewall and rc.firewall6 were unified, and
102 rc.firewall6 and rc.d/ip6fw were removed.
103 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc
104 variables are obsoleted. Instead, the following new rc
105 variables are added to rc.d/ipfw:
106
107 firewall_client_net_ipv6, firewall_simple_iif_ipv6,
108 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6,
109 firewall_simple_onet_ipv6, firewall_trusted_ipv6
110
111 The meanings correspond to the relevant IPv4 variables.
112
11320091125:
114 8.0-RELEASE.
115
11620091113:
117 The default terminal emulation for syscons(4) has been changed
118 from cons25 to xterm on all platforms except pc98. This means
119 that the /etc/ttys file needs to be updated to ensure correct
120 operation of applications on the console.
121
122 The terminal emulation style can be toggled per window by using
123 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration
124 options can be used to change the compile-time default back to
125 cons25.
126
127 To prevent graphical artifacts, make sure the TERM environment
128 variable is set to match the terminal emulation that is being
129 performed by syscons(4).
130
13120091109:
132 The layout of the structure ieee80211req_scan_result has changed.
133 Applications that require wireless scan results (e.g. ifconfig(8))
134 from net80211 need to be recompiled.
135
136 Applications such as wpa_supplicant(8) may require a full world
137 build without using NO_CLEAN in order to get synchronized with the
138 new structure.
139
14020091025:
141 The iwn(4) driver has been updated to support the 5000 and 5150 series.
142 There's one kernel module for each firmware. Adding "device iwnfw"
143 to the kernel configuration file means including all three firmware
144 images inside the kernel. If you want to include just the one for
145 your wireless card, use the the devices iwn4965fw, iwn5000fw or
146 iwn5150fw.
147
14820090926:
149 The rc.d/network_ipv6, IPv6 configuration script has been integrated
150 into rc.d/netif. The changes are the following:
151
152 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF
153 for IPv4. For aliases, $ifconfig_IF_aliasN should be used.
154 Note that both variables need the "inet6" keyword at the head.
155
156 Do not set $ipv6_network_interfaces manually if you do not
157 understand what you are doing. It is not needed in most cases.
158
159 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but
160 they are obsolete.
161
162 2. $ipv6_enable is obsolete. Use $ipv6_prefer and
163 "inet6 accept_rtadv" keyword in ifconfig(8) instead.
164
165 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and
166 all configured interfaces have "inet6 accept_rtadv" in the
167 $ifconfig_IF_ipv6. These are for backward compatibility.
168
169 3. A new variable $ipv6_prefer has been added. If NO, IPv6
170 functionality of interfaces with no corresponding
171 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag,
172 and the default address selection policy of ip6addrctl(8)
173 is the IPv4-preferred one (see rc.d/ip6addrctl for more details).
174 Note that if you want to configure IPv6 functionality on the
175 disabled interfaces after boot, first you need to clear the flag by
176 using ifconfig(8) like:
177
178 ifconfig em0 inet6 -ifdisabled
179
180 If YES, the default address selection policy is set as
181 IPv6-preferred.
182
183 The default value of $ipv6_prefer is NO.
184
185 4. If your system need to receive Router Advertisement messages,
186 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8)
187 scripts automatically invoke rtsol(8) when the interface becomes
188 UP. The Router Advertisement messages are used for SLAAC
189 (State-Less Address AutoConfiguration).
190
19120090922:
192 802.11s D3.03 support was committed. This is incompatible with the
193 previous code, which was based on D3.0.
194
19520090912:
196 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value
197 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to
198 control whether accepting Router Advertisement messages or not.
199 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and
200 a sysctl variable net.inet6.ip6.auto_linklocal is its default value.
201 The ifconfig(8) utility now supports these flags.
202
20320090910:
204 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for
205 mount(8) and -a option for df(1) to see them.
206
20720090825:
208 The old tunable hw.bus.devctl_disable has been superseded by
209 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be
210 replaced by hw.bus.devctl_queue=0. The default for this new tunable
211 is 1000.
212
21320090813:
214 Remove the option STOP_NMI. The default action is now to use NMI only
215 for KDB via the newly introduced function stop_cpus_hard() and
216 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64.
217
21820090803:
219 The stable/8 branch created in subversion. This corresponds to the
220 RELENG_8 branch in CVS.
221
22220090719:
223 Bump the shared library version numbers for all libraries that do not
224 use symbol versioning as part of the 8.0-RELEASE cycle. Bump
225 __FreeBSD_version to 800105.
226
22720090714:
228 Due to changes in the implementation of virtual network stack support,
229 all network-related kernel modules must be recompiled. As this change
230 breaks the ABI, bump __FreeBSD_version to 800104.
231
23220090713:
233 The TOE interface to the TCP syncache has been modified to remove
234 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack.
235 The cxgb driver is the only TOE consumer affected by this change, and
236 needs to be recompiled along with the kernel. As this change breaks
237 the ABI, bump __FreeBSD_version to 800103.
238
23920090712:
240 Padding has been added to struct tcpcb, sackhint and tcpstat in
241 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst
242 maintaining the ABI. However, this change breaks the ABI, so bump
243 __FreeBSD_version to 800102. User space tools that rely on the size of
244 any of these structs (e.g. sockstat) need to be recompiled.
245
24620090630:
247 The NFS_LEGACYRPC option has been removed along with the old kernel
248 RPC implementation that this option selected. Kernel configurations
249 may need to be adjusted.
250
25120090629:
252 The network interface device nodes at /dev/net/<interface> have been
253 removed. All ioctl operations can be performed the normal way using
254 routing sockets. The kqueue functionality can generally be replaced
255 with routing sockets.
256
25720090628:
258 The documentation from the FreeBSD Documentation Project (Handbook,
259 FAQ, etc.) is now installed via packages by sysinstall(8) and under
260 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc.
261
26220090624:
263 The ABI of various structures related to the SYSV IPC API have been
264 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel
265 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to
266 800100.
267
26820090622:
269 Layout of struct vnet has changed as routing related variables were
270 moved to their own Vimage module. Modules need to be recompiled. Bump
271 __FreeBSD_version to 800099.
272
27320090619:
274 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024
275 respectively. As long as no more than 16 groups per process are used,
276 no changes should be visible. When more than 16 groups are used, old
277 binaries may fail if they call getgroups() or getgrouplist() with
278 statically sized storage. Recompiling will work around this, but
279 applications should be modified to use dynamically allocated storage
280 for group arrays as POSIX.1-2008 does not cap an implementation's
281 number of supported groups at NGROUPS_MAX+1 as previous versions did.
282
283 NFS and portalfs mounts may also be affected as the list of groups is
284 truncated to 16. Users of NFS who use more than 16 groups, should
285 take care that negative group permissions are not used on the exported
286 file systems as they will not be reliable unless a GSSAPI based
287 authentication method is used.
288
28920090616:
290 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This
291 option compiles in the support for adaptive spinning for lockmgrs
292 which want to enable it. The lockinit() function now accepts the flag
293 LK_ADAPTIVE in order to make the lock object subject to adaptive
294 spinning when both held in write and read mode.
295
29620090613:
297 The layout of the structure returned by IEEE80211_IOC_STA_INFO has
298 changed. User applications that use this ioctl need to be rebuilt.
299
30020090611:
301 The layout of struct thread has changed. Kernel and modules need to
302 be rebuilt.
303
30420090608:
305 The layout of structs ifnet, domain, protosw and vnet_net has changed.
306 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097.
307
30820090602:
309 window(1) has been removed from the base system. It can now be
310 installed from ports. The port is called misc/window.
311
31220090601:
313 The way we are storing and accessing `routing table' entries has
314 changed. Programs reading the FIB, like netstat, need to be
315 re-compiled.
316
31720090601:
318 A new netisr implementation has been added for FreeBSD 8. Network
319 file system modules, such as igmp, ipdivert, and others, should be
320 rebuilt.
321 Bump __FreeBSD_version to 800096.
322
32320090530:
324 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no
325 more valid.
326
32720090530:
328 Add VOP_ACCESSX(9). File system modules need to be rebuilt.
329 Bump __FreeBSD_version to 800094.
330
33120090529:
332 Add mnt_xflag field to 'struct mount'. File system modules need to be
333 rebuilt.
334 Bump __FreeBSD_version to 800093.
335
33620090528:
337 The compiling option ADAPTIVE_SX has been retired while it has been
338 introduced the option NO_ADAPTIVE_SX which handles the reversed logic.
339 The KPI for sx_init_flags() changes as accepting flags:
340 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has
341 been introduced in order to handle the reversed logic.
342 Bump __FreeBSD_version to 800092.
343
34420090527:
345 Add support for hierarchical jails. Remove global securelevel.
346 Bump __FreeBSD_version to 800091.
347
34820090523:
349 The layout of struct vnet_net has changed, therefore modules
350 need to be rebuilt.
351 Bump __FreeBSD_version to 800090.
352
35320090523:
354 The newly imported zic(8) produces a new format in the output. Please
355 run tzsetup(8) to install the newly created data to /etc/localtime.
356
35720090520:
358 The sysctl tree for the usb stack has renamed from hw.usb2.* to
359 hw.usb.* and is now consistent again with previous releases.
360
36120090520:
362 802.11 monitor mode support was revised and driver api's were changed.
363 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead
364 of DLT_IEEE802_11. No user-visible data structures were changed but
365 applications that use DLT_IEEE802_11 may require changes.
366 Bump __FreeBSD_version to 800088.
367
36820090430:
369 The layout of the following structs has changed: sysctl_oid,
370 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet,
371 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or
372 panics may be experienced. World rebuild is required for
373 correctly checking networking state from userland.
374 Bump __FreeBSD_version to 800085.
375
37620090429:
377 MLDv2 and Source-Specific Multicast (SSM) have been merged
378 to the IPv6 stack. VIMAGE hooks are in but not yet used.
379 The implementation of SSM within FreeBSD's IPv6 stack closely
380 follows the IPv4 implementation.
381
382 For kernel developers:
383
384 * The most important changes are that the ip6_output() and
385 ip6_input() paths no longer take the IN6_MULTI_LOCK,
386 and this lock has been downgraded to a non-recursive mutex.
387
388 * As with the changes to the IPv4 stack to support SSM, filtering
389 of inbound multicast traffic must now be performed by transport
390 protocols within the IPv6 stack. This does not apply to TCP and
391 SCTP, however, it does apply to UDP in IPv6 and raw IPv6.
392
393 * The KPIs used by IPv6 multicast are similar to those used by
394 the IPv4 stack, with the following differences:
395 * im6o_mc_filter() is analogous to imo_multicast_filter().
396 * The legacy KAME entry points in6_joingroup and in6_leavegroup()
397 are shimmed to in6_mc_join() and in6_mc_leave() respectively.
398 * IN6_LOOKUP_MULTI() has been deprecated and removed.
399 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs
400 for MLDv1 have an additional 'timer' argument which is used to
401 jitter the initial membership report for the solicited-node
402 multicast membership on-link.
403 * This is not strictly needed for MLDv2, which already jitters
404 its report transmissions. However, the 'timer' argument is
405 preserved in case MLDv1 is active on the interface.
406
407 * The KAME linked-list based IPv6 membership implementation has
408 been refactored to use a vector similar to that used by the IPv4
409 stack.
410 Code which maintains a list of its own multicast memberships
411 internally, e.g. carp, has been updated to reflect the new
412 semantics.
413
414 * There is a known Lock Order Reversal (LOR) due to in6_setscope()
415 acquiring the IF_AFDATA_LOCK and being called within ip6_output().
416 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an
417 implementation constraint which needs to be addressed in HEAD.
418
419 For application developers:
420
421 * The changes are broadly similar to those made for the IPv4
422 stack.
423
424 * The use of IPv4 and IPv6 multicast socket options on the same
425 socket, using mapped addresses, HAS NOT been tested or supported.
426
427 * There are a number of issues with the implementation of various
428 IPv6 multicast APIs which need to be resolved in the API surface
429 before the implementation is fully compatible with KAME userland
430 use, and these are mostly to do with interface index treatment.
431
432 * The literature available discusses the use of either the delta / ASM
433 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API
434 using setsourcefilter(3)/getsourcefilter(3). For more information
435 please refer to RFC 3768, 'Socket Interface Extensions for
436 Multicast Source Filters'.
437
438 * Applications which use the published RFC 3678 APIs should be fine.
439
440 For systems administrators:
441
442 * The mtest(8) utility has been refactored to support IPv6, in
443 addition to IPv4. Interface addresses are no longer accepted
444 as arguments, their names must be used instead. The utility
445 will map the interface name to its first IPv4 address as
446 returned by getifaddrs(3).
447
448 * The ifmcstat(8) utility has also been updated to print the MLDv2
449 endpoint state and source filter lists via sysctl(3).
450
451 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable
452 loopback of IPv6 multicast datagrams by default; it defaults to 1
453 to preserve the existing behaviour. Disabling multicast loopback is
454 recommended for optimal system performance.
455
456 * The IPv6 MROUTING code has been changed to examine this sysctl
457 instead of attempting to perform a group lookup before looping
458 back forwarded datagrams.
459
460 Bump __FreeBSD_version to 800084.
461
46220090422:
463 Implement low-level Bluetooth HCI API.
464 Bump __FreeBSD_version to 800083.
465
46620090419:
467 The layout of struct malloc_type, used by modules to register new
468 memory allocation types, has changed. Most modules will need to
469 be rebuilt or panics may be experienced.
470 Bump __FreeBSD_version to 800081.
471
47220090415:
473 Anticipate overflowing inp_flags - add inp_flags2.
474 This changes most offsets in inpcb, so checking v4 connection
475 state will require a world rebuild.
476 Bump __FreeBSD_version to 800080.
477
47820090415:
479 Add an llentry to struct route and struct route_in6. Modules
480 embedding a struct route will need to be recompiled.
481 Bump __FreeBSD_version to 800079.
482
48320090414:
484 The size of rt_metrics_lite and by extension rtentry has changed.
485 Networking administration apps will need to be recompiled.
486 The route command now supports show as an alias for get, weighting
487 of routes, sticky and nostick flags to alter the behavior of stateful
488 load balancing.
489 Bump __FreeBSD_version to 800078.
490
49120090408:
492 Do not use Giant for kbdmux(4) locking. This is wrong and
493 apparently causing more problems than it solves. This will
494 re-open the issue where interrupt handlers may race with
495 kbdmux(4) in polling mode. Typical symptoms include (but
496 not limited to) duplicated and/or missing characters when
497 low level console functions (such as gets) are used while
498 interrupts are enabled (for example geli password prompt,
499 mountroot prompt etc.). Disabling kbdmux(4) may help.
500
50120090407:
502 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed;
503 kernel modules referencing any of the above need to be recompiled.
504 Bump __FreeBSD_version to 800075.
505
50620090320:
507 GEOM_PART has become the default partition slicer for storage devices,
508 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It
509 introduces some changes:
510
511 MSDOS/EBR: the devices created from MSDOS extended partition entries
512 (EBR) can be named differently than with GEOM_MBR and are now symlinks
513 to devices with offset-based names. fstabs may need to be modified.
514
515 BSD: the "geometry does not match label" warning is harmless in most
516 cases but it points to problems in file system misalignment with
517 disk geometry. The "c" partition is now implicit, covers the whole
518 top-level drive and cannot be (mis)used by users.
519
520 General: Kernel dumps are now not allowed to be written to devices
521 whose partition types indicate they are meant to be used for file
522 systems (or, in case of MSDOS partitions, as something else than
523 the "386BSD" type).
524
525 Most of these changes date approximately from 200812.
526
52720090319:
528 The uscanner(4) driver has been removed from the kernel. This follows
529 Linux removing theirs in 2.6 and making libusb the default interface
530 (supported by sane).
531
53220090319:
533 The multicast forwarding code has been cleaned up. netstat(1)
534 only relies on KVM now for printing bandwidth upcall meters.
535 The IPv4 and IPv6 modules are split into ip_mroute_mod and
536 ip6_mroute_mod respectively. The config(5) options for statically
537 compiling this code remain the same, i.e. 'options MROUTING'.
538
53920090315:
540 Support for the IFF_NEEDSGIANT network interface flag has been
541 removed, which means that non-MPSAFE network device drivers are no
542 longer supported. In particular, if_ar, if_sr, and network device
543 drivers from the old (legacy) USB stack can no longer be built or
544 used.
545
54620090313:
547 POSIX.1 Native Language Support (NLS) has been enabled in libc and
548 a bunch of new language catalog files have also been added.
549 This means that some common libc messages are now localized and
550 they depend on the LC_MESSAGES environmental variable.
551
55220090313:
553 The k8temp(4) driver has been renamed to amdtemp(4) since
554 support for Family 10 and Family 11 CPU families was added.
555
55620090309:
557 IGMPv3 and Source-Specific Multicast (SSM) have been merged
558 to the IPv4 stack. VIMAGE hooks are in but not yet used.
559
560 For kernel developers, the most important changes are that the
561 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(),
562 and this lock has been downgraded to a non-recursive mutex.
563
564 Transport protocols (UDP, Raw IP) are now responsible for filtering
565 inbound multicast traffic according to group membership and source
566 filters. The imo_multicast_filter() KPI exists for this purpose.
567 Transports which do not use multicast (SCTP, TCP) already reject
568 multicast by default. Forwarding and receive performance may improve
569 as a mutex acquisition is no longer needed in the ip_input()
570 low-level input path. in_addmulti() and in_delmulti() are shimmed
571 to new KPIs which exist to support SSM in-kernel.
572
573 For application developers, it is recommended that loopback of
574 multicast datagrams be disabled for best performance, as this
575 will still cause the lock to be taken for each looped-back
576 datagram transmission. The net.inet.ip.mcast.loop sysctl may
577 be tuned to 0 to disable loopback by default; it defaults to 1
578 to preserve the existing behaviour.
579
580 For systems administrators, to obtain best performance with
581 multicast reception and multiple groups, it is always recommended
582 that a card with a suitably precise hash filter is used. Hash
583 collisions will still result in the lock being taken within the
584 transport protocol input path to check group membership.
585
586 If deploying FreeBSD in an environment with IGMP snooping switches,
587 it is recommended that the net.inet.igmp.sendlocal sysctl remain
588 enabled; this forces 224.0.0.0/24 group membership to be announced
589 via IGMP.
590
591 The size of 'struct igmpstat' has changed; netstat needs to be
592 recompiled to reflect this.
593 Bump __FreeBSD_version to 800070.
594
59520090309:
596 libusb20.so.1 is now installed as libusb.so.1 and the ports system
597 updated to use it. This requires a buildworld/installworld in order to
598 update the library and dependencies (usbconfig, etc). Its advisable to
599 rebuild all ports which uses libusb. More specific directions are given
600 in the ports collection UPDATING file. Any /etc/libmap.conf entries for
601 libusb are no longer required and can be removed.
602
60320090302:
604 A workaround is committed to allow the creation of System V shared
605 memory segment of size > 2 GB on the 64-bit architectures.
606 Due to a limitation of the existing ABI, the shm_segsz member
607 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is
608 wrong for large segments. Note that limits must be explicitly
609 raised to allow such segments to be created.
610
61120090301:
612 The layout of struct ifnet has changed, requiring a rebuild of all
613 network device driver modules.
614
61520090227:
616 The /dev handling for the new USB stack has changed, a
617 buildworld/installworld is required for libusb20.
618
61920090223:
620 The new USB2 stack has now been permanently moved in and all kernel and
621 module names reverted to their previous values (eg, usb, ehci, ohci,
622 ums, ...). The old usb stack can be compiled in by prefixing the name
623 with the letter 'o', the old usb modules have been removed.
624 Updating entry 20090216 for xorg and 20090215 for libmap may still
625 apply.
626
62720090217:
628 The rc.conf(5) option if_up_delay has been renamed to
629 defaultroute_delay to better reflect its purpose. If you have
630 customized this setting in /etc/rc.conf you need to update it to
631 use the new name.
632
63320090216:
634 xorg 7.4 wants to configure its input devices via hald which does not
635 yet work with USB2. If the keyboard/mouse does not work in xorg then
636 add
637 Option "AllowEmptyInput" "off"
638 to your ServerLayout section. This will cause X to use the configured
639 kbd and mouse sections from your xorg.conf.
640
64120090215:
642 The GENERIC kernels for all architectures now default to the new USB2
643 stack. No kernel config options or code have been removed so if a
644 problem arises please report it and optionally revert to the old USB
645 stack. If you are loading USB kernel modules or have a custom kernel
646 that includes GENERIC then ensure that usb names are also changed over,
647 eg uftdi -> usb2_serial_ftdi.
648
649 Older programs linked against the ports libusb 0.1 need to be
650 redirected to the new stack's libusb20. /etc/libmap.conf can
651 be used for this:
652 # Map old usb library to new one for usb2 stack
653 libusb-0.1.so.8 libusb20.so.1
654
65520090209:
656 All USB ethernet devices now attach as interfaces under the name ueN
657 (eg. ue0). This is to provide a predictable name as vendors often
658 change usb chipsets in a product without notice.
659
66020090203:
661 The ichsmb(4) driver has been changed to require SMBus slave
662 addresses be left-justified (xxxxxxx0b) rather than right-justified.
663 All of the other SMBus controller drivers require left-justified
664 slave addresses, so this change makes all the drivers provide the
665 same interface.
666
66720090201:
668 INET6 statistics (struct ip6stat) was updated.
669 netstat(1) needs to be recompiled.
670
67120090119:
672 NTFS has been removed from GENERIC kernel on amd64 to match
673 GENERIC on i386. Should not cause any issues since mount_ntfs(8)
674 will load ntfs.ko module automatically when NTFS support is
675 actually needed, unless ntfs.ko is not installed or security
676 level prohibits loading kernel modules. If either is the case,
677 "options NTFS" has to be added into kernel config.
678
67920090115:
680 TCP Appropriate Byte Counting (RFC 3465) support added to kernel.
681 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to
682 800061. User space tools that rely on the size of struct tcpcb in
683 tcp_var.h (e.g. sockstat) need to be recompiled.
684
68520081225:
686 ng_tty(4) module updated to match the new TTY subsystem.
687 Due to API change, user-level applications must be updated.
688 New API support added to mpd5 CVS and expected to be present
689 in next mpd5.3 release.
690
69120081219:
692 With __FreeBSD_version 800060 the makefs tool is part of
693 the base system (it was a port).
694
69520081216:
696 The afdata and ifnet locks have been changed from mutexes to
697 rwlocks, network modules will need to be re-compiled.
698
69920081214:
700 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite.
701 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated.
702 The new code reduced struct rtentry{} by 16 bytes on 32-bit
703 architecture and 40 bytes on 64-bit architecture. The userland
704 applications "arp" and "ndp" have been updated accordingly.
705 The output from "netstat -r" shows only routing entries and
706 none of the L2 information.
707
70820081130:
709 __FreeBSD_version 800057 marks the switchover from the
710 binary ath hal to source code. Users must add the line:
711
712 options AH_SUPPORT_AR5416
713
714 to their kernel config files when specifying:
715
716 device ath_hal
717
718 The ath_hal module no longer exists; the code is now compiled
719 together with the driver in the ath module. It is now
720 possible to tailor chip support (i.e. reduce the set of chips
721 and thereby the code size); consult ath_hal(4) for details.
722
72320081121:
724 __FreeBSD_version 800054 adds memory barriers to
725 <machine/atomic.h>, new interfaces to ifnet to facilitate
726 multiple hardware transmit queues for cards that support
727 them, and a lock-less ring-buffer implementation to
728 enable drivers to more efficiently manage queueing of
729 packets.
730
73120081117:
732 A new version of ZFS (version 13) has been merged to -HEAD.
733 This version has zpool attribute "listsnapshots" off by
734 default, which means "zfs list" does not show snapshots,
735 and is the same as Solaris behavior.
736
73720081028:
738 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled.
739
74020081009:
741 The uhci, ohci, ehci and slhci USB Host controller drivers have
742 been put into separate modules. If you load the usb module
743 separately through loader.conf you will need to load the
744 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0
745 controller add the following to loader.conf:
746
747 uhci_load="YES"
748 ehci_load="YES"
749
75020081009:
751 The ABI used by the PMC toolset has changed. Please keep
752 userland (libpmc(3)) and the kernel module (hwpmc(4)) in
753 sync.
754
75520081009:
756 atapci kernel module now includes only generic PCI ATA
757 driver. AHCI driver moved to ataahci kernel module.
758 All vendor-specific code moved into separate kernel modules:
759 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek,
760 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron,
761 atamarvell, atamicron, atanational, atanetcell, atanvidia,
762 atapromise, ataserverworks, atasiliconimage, atasis, atavia
763
76420080820:
765 The TTY subsystem of the kernel has been replaced by a new
766 implementation, which provides better scalability and an
767 improved driver model. Most common drivers have been migrated to
768 the new TTY subsystem, while others have not. The following
769 drivers have not yet been ported to the new TTY layer:
770
771 PCI/ISA:
772 cy, digi, rc, rp, sio
773
774 USB:
775 ubser, ucycom
776
777 Line disciplines:
778 ng_h4, ng_tty, ppp, sl, snp
779
780 Adding these drivers to your kernel configuration file shall
781 cause compilation to fail.
782
78320080818:
784 ntpd has been upgraded to 4.2.4p5.
785
78620080801:
787 OpenSSH has been upgraded to 5.1p1.
788
789 For many years, FreeBSD's version of OpenSSH preferred DSA
790 over RSA for host and user authentication keys. With this
791 upgrade, we've switched to the vendor's default of RSA over
792 DSA. This may cause upgraded clients to warn about unknown
793 host keys even for previously known hosts. Users should
794 follow the usual procedure for verifying host keys before
795 accepting the RSA key.
796
797 This can be circumvented by setting the "HostKeyAlgorithms"
798 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh
799 command line.
800
801 Please note that the sequence of keys offered for
802 authentication has been changed as well. You may want to
803 specify IdentityFile in a different order to revert this
804 behavior.
805
80620080713:
807 The sio(4) driver has been removed from the i386 and amd64
808 kernel configuration files. This means uart(4) is now the
809 default serial port driver on those platforms as well.
810
811 To prevent collisions with the sio(4) driver, the uart(4) driver
812 uses different names for its device nodes. This means the
813 onboard serial port will now most likely be called "ttyu0"
814 instead of "ttyd0". You may need to reconfigure applications to
815 use the new device names.
816
817 When using the serial port as a boot console, be sure to update
818 /boot/device.hints and /etc/ttys before booting the new kernel.
819 If you forget to do so, you can still manually specify the hints
820 at the loader prompt:
821
822 set hint.uart.0.at="isa"
823 set hint.uart.0.port="0x3F8"
824 set hint.uart.0.flags="0x10"
825 set hint.uart.0.irq="4"
826 boot -s
827
82820080609:
829 The gpt(8) utility has been removed. Use gpart(8) to partition
830 disks instead.
831
83220080603:
833 The version that Linuxulator emulates was changed from 2.4.2
834 to 2.6.16. If you experience any problems with Linux binaries
835 please try to set sysctl compat.linux.osrelease to 2.4.2 and
836 if it fixes the problem contact emulation mailing list.
837
83820080525:
839 ISDN4BSD (I4B) was removed from the src tree. You may need to
840 update a your kernel configuration and remove relevant entries.
841
84220080509:
843 I have checked in code to support multiple routing tables.
844 See the man pages setfib(1) and setfib(2).
845 This is a hopefully backwards compatible version,
846 but to make use of it you need to compile your kernel
847 with options ROUTETABLES=2 (or more up to 16).
848
84920080420:
850 The 802.11 wireless support was redone to enable multi-bss
851 operation on devices that are capable. The underlying device
852 is no longer used directly but instead wlanX devices are
853 cloned with ifconfig. This requires changes to rc.conf files.
854 For example, change:
855 ifconfig_ath0="WPA DHCP"
856 to
857 wlans_ath0=wlan0
858 ifconfig_wlan0="WPA DHCP"
859 see rc.conf(5) for more details. In addition, mergemaster of
860 /etc/rc.d is highly recommended. Simultaneous update of userland
861 and kernel wouldn't hurt either.
862
863 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta
864 modules were merged into the base wlan module. All references
865 to these modules (e.g. in kernel config files) must be removed.
866
86720080408:
868 psm(4) has gained write(2) support in native operation level.
869 Arbitrary commands can be written to /dev/psm%d and status can
870 be read back from it. Therefore, an application is responsible
871 for status validation and error recovery. It is a no-op in
872 other operation levels.
873
87420080312:
875 Support for KSE threading has been removed from the kernel. To
876 run legacy applications linked against KSE libmap.conf may
877 be used. The following libmap.conf may be used to ensure
878 compatibility with any prior release:
879
880 libpthread.so.1 libthr.so.1
881 libpthread.so.2 libthr.so.2
882 libkse.so.3 libthr.so.3
883
88420080301:
885 The layout of struct vmspace has changed. This affects libkvm
886 and any executables that link against libkvm and use the
887 kvm_getprocs() function. In particular, but not exclusively,
888 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1).
889 The effects are minimal, but it's advisable to upgrade world
890 nonetheless.
891
89220080229:
893 The latest em driver no longer has support in it for the
894 82575 adapter, this is now moved to the igb driver. The
895 split was done to make new features that are incompatible
896 with older hardware easier to do.
897
89820080220:
899 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4),
900 likewise the kernel option is now GEOM_LINUX_LVM.
901
90220080211:
903 The default NFS mount mode has changed from UDP to TCP for
904 increased reliability. If you rely on (insecurely) NFS
905 mounting across a firewall you may need to update your
906 firewall rules.
907
90820080208:
909 Belatedly note the addition of m_collapse for compacting
910 mbuf chains.
911
91220080126:
913 The fts(3) structures have been changed to use adequate
914 integer types for their members and so to be able to cope
915 with huge file trees. The old fts(3) ABI is preserved
916 through symbol versioning in libc, so third-party binaries
917 using fts(3) should still work, although they will not take
918 advantage of the extended types. At the same time, some
919 third-party software might fail to build after this change
920 due to unportable assumptions made in its source code about
921 fts(3) structure members. Such software should be fixed
922 by its vendor or, in the worst case, in the ports tree.
923 FreeBSD_version 800015 marks this change for the unlikely
924 case that a portable fix is impossible.
925
92620080123:
927 To upgrade to -current after this date, you must be running
928 FreeBSD not older than 6.0-RELEASE. Upgrading to -current
929 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems.
930
93120071128:
932 The ADAPTIVE_GIANT kernel option has been retired because its
933 functionality is the default now.
934
93520071118:
936 The AT keyboard emulation of sunkbd(4) has been turned on
937 by default. In order to make the special symbols of the Sun
938 keyboards driven by sunkbd(4) work under X these now have
939 to be configured the same way as Sun USB keyboards driven
940 by ukbd(4) (which also does AT keyboard emulation), f.e.:
941
942 Option "XkbLayout" "us"
943 Option "XkbRules" "xorg"
944 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us"
945
94620071024:
947 It has been decided that it is desirable to provide ABI
948 backwards compatibility to the FreeBSD 4/5/6 versions of the
949 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was
950 broken with the introduction of PCI domain support (see the
951 20070930 entry). Unfortunately, this required the ABI of
952 PCIOCGETCONF to be broken again in order to be able to
953 provide backwards compatibility to the old version of that
954 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled
955 again. As for prominent ports this affects neither pciutils
956 nor xorg-server this time, the hal port needs to be rebuilt
957 however.
958
95920071020:
960 The misnamed kthread_create() and friends have been renamed
961 to kproc_create() etc. Many of the callers already
962 used kproc_start()..
963 I will return kthread_create() and friends in a while
964 with implementations that actually create threads, not procs.
965 Renaming corresponds with version 800002.
966
96720071010:
968 RELENG_7 branched.
969
970COMMON ITEMS:
971
972 General Notes
973 -------------
974 Avoid using make -j when upgrading. While generally safe, there are
975 sometimes problems using -j to upgrade. If your upgrade fails with
976 -j, please try again without -j. From time to time in the past there
977 have been problems using -j with buildworld and/or installworld. This
978 is especially true when upgrading between "distant" versions (eg one
979 that cross a major release boundary or several minor releases, or when
980 several months have passed on the -current branch).
981
982 Sometimes, obscure build problems are the result of environment
983 poisoning. This can happen because the make utility reads its
984 environment when searching for values for global variables. To run
985 your build attempts in an "environmental clean room", prefix all make
986 commands with 'env -i '. See the env(1) manual page for more details.
987
988 When upgrading from one major version to another it is generally best
989 to upgrade to the latest code in the currently installed branch first,
990 then do an upgrade to the new branch. This is the best-tested upgrade
991 path, and has the highest probability of being successful. Please try
992 this approach before reporting problems with a major version upgrade.
993
994 ZFS notes
995 ---------
996 When upgrading the boot ZFS pool to a new version, always follow
997 these two steps:
998
999 1.) recompile and reinstall the ZFS boot loader and boot block
1000 (this is part of "make buildworld" and "make installworld")
1001
1002 2.) update the ZFS boot block on your boot drive
1003
1004 The following example updates the ZFS boot block on the first
1005 partition (freebsd-boot) of a GPT partitioned drive ad0:
1006 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0"
1007
1008 Non-boot pools do not need these updates.
1009
1010 To build a kernel
1011 -----------------
1012 If you are updating from a prior version of FreeBSD (even one just
1013 a few days old), you should follow this procedure. It is the most
1014 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
1015
1016 make kernel-toolchain
1017 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE
1018 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE
1019
1020 To test a kernel once
1021 ---------------------
1022 If you just want to boot a kernel once (because you are not sure
1023 if it works, or if you want to boot a known bad kernel to provide
1024 debugging information) run
1025 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
1026 nextboot -k testkernel
1027
1028 To just build a kernel when you know that it won't mess you up
1029 --------------------------------------------------------------
1030 This assumes you are already running a CURRENT system. Replace
1031 ${arch} with the architecture of your machine (e.g. "i386",
1032 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc).
1033
1034 cd src/sys/${arch}/conf
1035 config KERNEL_NAME_HERE
1036 cd ../compile/KERNEL_NAME_HERE
1037 make depend
1038 make
1039 make install
1040
1041 If this fails, go to the "To build a kernel" section.
1042
1043 To rebuild everything and install it on the current system.
1044 -----------------------------------------------------------
1045 # Note: sometimes if you are running current you gotta do more than
1046 # is listed here if you are upgrading from a really old current.
1047
1048 <make sure you have good level 0 dumps>
1049 make buildworld
1050 make kernel KERNCONF=YOUR_KERNEL_HERE
1051 [1]
1052 <reboot in single user> [3]
1053 mergemaster -p [5]
1054 make installworld
1055 make delete-old
1056 mergemaster -i [4]
1057 <reboot>
1058
1059
1060 To cross-install current onto a separate partition
1061 --------------------------------------------------
1062 # In this approach we use a separate partition to hold
1063 # current's root, 'usr', and 'var' directories. A partition
1064 # holding "/", "/usr" and "/var" should be about 2GB in
1065 # size.
1066
1067 <make sure you have good level 0 dumps>
1068 <boot into -stable>
1069 make buildworld
1070 make buildkernel KERNCONF=YOUR_KERNEL_HERE
1071 <maybe newfs current's root partition>
1072 <mount current's root partition on directory ${CURRENT_ROOT}>
1073 make installworld DESTDIR=${CURRENT_ROOT}
1074 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
1075 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT}
1076 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd
1077 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
1078 <reboot into current>
1079 <do a "native" rebuild/install as described in the previous section>
1080 <maybe install compatibility libraries from ports/misc/compat*>
1081 <reboot>
1082
1083
1084 To upgrade in-place from 8.x-stable to current
1085 ----------------------------------------------
1086 <make sure you have good level 0 dumps>
1087 make buildworld [9]
1088 make kernel KERNCONF=YOUR_KERNEL_HERE [8]
1089 [1]
1090 <reboot in single user> [3]
1091 mergemaster -p [5]
1092 make installworld
1093 make delete-old
1094 mergemaster -i [4]
1095 <reboot>
1096
1097 Make sure that you've read the UPDATING file to understand the
1098 tweaks to various things you need. At this point in the life
1099 cycle of current, things change often and you are on your own
1100 to cope. The defaults can also change, so please read ALL of
1101 the UPDATING entries.
1102
1103 Also, if you are tracking -current, you must be subscribed to
1104 freebsd-current@freebsd.org. Make sure that before you update
1105 your sources that you have read and understood all the recent
1106 messages there. If in doubt, please track -stable which has
1107 much fewer pitfalls.
1108
1109 [1] If you have third party modules, such as vmware, you
1110 should disable them at this point so they don't crash your
1111 system on reboot.
1112
1113 [3] From the bootblocks, boot -s, and then do
1114 fsck -p
1115 mount -u /
1116 mount -a
1117 cd src
1118 adjkerntz -i # if CMOS is wall time
1119 Also, when doing a major release upgrade, it is required that
1120 you boot into single user mode to do the installworld.
1121
1122 [4] Note: This step is non-optional. Failure to do this step
1123 can result in a significant reduction in the functionality of the
1124 system. Attempting to do it by hand is not recommended and those
1125 that pursue this avenue should read this file carefully, as well
1126 as the archives of freebsd-current and freebsd-hackers mailing lists
1127 for potential gotchas. The -U option is also useful to consider.
1128 See mergemaster(8) for more information.
1129
1130 [5] Usually this step is a noop. However, from time to time
1131 you may need to do this if you get unknown user in the following
1132 step. It never hurts to do it all the time. You may need to
1133 install a new mergemaster (cd src/usr.sbin/mergemaster && make
1134 install) after the buildworld before this step if you last updated
1135 from current before 20020224 or from -stable before 20020408.
1136
1137 [8] In order to have a kernel that can run the 4.x binaries needed to
1138 do an installworld, you must include the COMPAT_FREEBSD4 option in
1139 your kernel. Failure to do so may leave you with a system that is
1140 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is
1141 required to run the 5.x binaries on more recent kernels. And so on
1142 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7.
1143
1144 Make sure that you merge any new devices from GENERIC since the
1145 last time you updated your kernel config file.
1146
1147 [9] When checking out sources, you must include the -P flag to have
1148 cvs prune empty directories.
1149
1150 If CPUTYPE is defined in your /etc/make.conf, make sure to use the
1151 "?=" instead of the "=" assignment operator, so that buildworld can
1152 override the CPUTYPE if it needs to.
1153
1154 MAKEOBJDIRPREFIX must be defined in an environment variable, and
1155 not on the command line, or in /etc/make.conf. buildworld will
1156 warn if it is improperly defined.
1157FORMAT:
1158
1159This file contains a list, in reverse chronological order, of major
1160breakages in tracking -current. Not all things will be listed here,
1161and it only starts on October 16, 2004. Updating files can found in
1162previous releases if your system is older than this.
1163
1164Copyright information:
1165
1166Copyright 1998-2009 M. Warner Losh. All Rights Reserved.
1167
1168Redistribution, publication, translation and use, with or without
1169modification, in full or in part, in any form or format of this
1170document are permitted without further permission from the author.
1171
1172THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR
1173IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
1174WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
1175DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT,
1176INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
1177(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
1178SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1179HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
1180STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
1181IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1182POSSIBILITY OF SUCH DAMAGE.
1183
1184Contact Warner Losh if you have any questions about your use of
1185this document.
1186
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