1Updating Information for FreeBSD current users 2 3This file is maintained and copyrighted by M. Warner Losh <imp@freebsd.org>. 4See end of file for further details. For commonly done items, please see the 5COMMON ITEMS: section later in the file. These instructions assume that you 6basically know what you are doing. If not, then please consult the FreeBSD 7handbook. 8 9Items affecting the ports and packages system can be found in 10/usr/ports/UPDATING. Please read that file before running portupgrade. 11 12NOTE TO PEOPLE WHO THINK THAT FreeBSD 10.x IS SLOW: 13 FreeBSD 10.x has many debugging features turned on, in both the kernel 14 and userland. These features attempt to detect incorrect use of 15 system primitives, and encourage loud failure through extra sanity 16 checking and fail stop semantics. They also substantially impact 17 system performance. If you want to do performance measurement, 18 benchmarking, and optimization, you'll want to turn them off. This 19 includes various WITNESS- related kernel options, INVARIANTS, malloc 20 debugging flags in userland, and various verbose features in the 21 kernel. Many developers choose to disable these features on build 22 machines to maximize performance. (To disable malloc debugging, run 23 ln -s aj /etc/malloc.conf.) 24 2520111122: 26 The acpi_wmi(4) status device /dev/wmistat has been renamed to 27 /dev/wmistat0. 28 2920111108: 30 The option VFS_ALLOW_NONMPSAFE option has been added in order to 31 explicitely support non-MPSAFE filesystems. 32 It is on by default for all supported platform at this present 33 time. 34 3520111101: 36 The broken amd(4) driver has been replaced with esp(4) in the amd64, 37 i386 and pc98 GENERIC kernel configuration files. 38 3920110930: 40 sysinstall has been removed 41 4220110923: 43 The stable/9 branch created in subversion. This corresponds to the 44 RELENG_9 branch in CVS. 45 4620110913: 47 This commit modifies vfs_register() so that it uses a hash 48 calculation to set vfc_typenum, which is enabled by default. 49 The first time a system is booted after this change, the 50 vfc_typenum values will change for all file systems. The 51 main effect of this is a change to the NFS server file handles 52 for file systems that use vfc_typenum in their fsid, such as ZFS. 53 It will, however, prevent vfc_typenum from changing when file 54 systems are loaded in a different order for subsequent reboots. 55 To disable this, you can set vfs.typenumhash=0 in /boot/loader.conf 56 until you are ready to remount all NFS clients after a reboot. 57 5820110828: 59 Bump the shared library version numbers for libraries that 60 do not use symbol versioning, have changed the ABI compared 61 to stable/8 and which shared library version was not bumped. 62 Done as part of 9.0-RELEASE cycle. 63 6420110815: 65 During the merge of Capsicum features, the fget(9) KPI was modified. 66 This may require the rebuilding of out-of-tree device drivers -- 67 issues have been reported specifically with the nVidia device driver. 68 __FreeBSD_version is bumped to 900041. 69 70 Also, there is a period between 20110811 and 20110814 where the 71 special devices /dev/{stdin,stdout,stderr} did not work correctly. 72 Building world from a kernel during that window may not work. 73 7420110628: 75 The packet filter (pf) code has been updated to OpenBSD 4.5. 76 You need to update userland tools to be in sync with kernel. 77 This update breaks backward compatibility with earlier pfsync(4) 78 versions. Care must be taken when updating redundant firewall setups. 79 8020110608: 81 The following sysctls and tunables are retired on x86 platforms: 82 machdep.hlt_cpus 83 machdep.hlt_logical_cpus 84 The following sysctl is retired: 85 machdep.hyperthreading_allowed 86 The sysctls were supposed to provide a way to dynamically offline and 87 online selected CPUs on x86 platforms, but the implementation has not 88 been reliable especially with SCHED_ULE scheduler. 89 machdep.hyperthreading_allowed tunable is still available to ignore 90 hyperthreading CPUs at OS level. 91 Individual CPUs can be disabled using hint.lapic.X.disabled tunable, 92 where X is an APIC ID of a CPU. Be advised, though, that disabling 93 CPUs in non-uniform fashion will result in non-uniform topology and 94 may lead to sub-optimal system performance with SCHED_ULE, which is 95 a default scheduler. 96 9720110607: 98 cpumask_t type is retired and cpuset_t is used in order to describe 99 a mask of CPUs. 100 10120110531: 102 Changes to ifconfig(8) for dynamic address family detection mandate 103 that you are running a kernel of 20110525 or later. Make sure to 104 follow the update procedure to boot a new kernel before installing 105 world. 106 10720110513: 108 Support for sun4v architecture is officially dropped 109 11020110503: 111 Several KPI breaking changes have been committed to the mii(4) layer, 112 the PHY drivers and consequently some Ethernet drivers using mii(4). 113 This means that miibus.ko and the modules of the affected Ethernet 114 drivers need to be recompiled. 115 116 Note to kernel developers: Given that the OUI bit reversion problem 117 was fixed as part of these changes all mii(4) commits related to OUIs, 118 i.e. to sys/dev/mii/miidevs, PHY driver probing and vendor specific 119 handling, no longer can be merged verbatim to stable/8 and previous 120 branches. 121 12220110430: 123 Users of the Atheros AR71xx SoC code now need to add 'device ar71xx_pci' 124 into their kernel configurations along with 'device pci'. 125 12620110427: 127 The default NFS client is now the new NFS client, so fstype "newnfs" 128 is now "nfs" and the regular/old NFS client is now fstype "oldnfs". 129 Although mounts via fstype "nfs" will usually work without userland 130 changes, it is recommended that the mount(8) and mount_nfs(8) 131 commands be rebuilt from sources and that a link to mount_nfs called 132 mount_oldnfs be created. The new client is compiled into the 133 kernel with "options NFSCL" and this is needed for diskless root 134 file systems. The GENERIC kernel configs have been changed to use 135 NFSCL and NFSD (the new server) instead of NFSCLIENT and NFSSERVER. 136 To use the regular/old client, you can "mount -t oldnfs ...". For 137 a diskless root file system, you must also include a line like: 138 139 vfs.root.mountfrom="oldnfs:" 140 141 in the boot/loader.conf on the root fs on the NFS server to make 142 a diskless root fs use the old client. 143 14420110424: 145 The GENERIC kernels for all architectures now default to the new 146 CAM-based ATA stack. It means that all legacy ATA drivers were 147 removed and replaced by respective CAM drivers. If you are using 148 ATA device names in /etc/fstab or other places, make sure to update 149 them respectively (adX -> adaY, acdX -> cdY, afdX -> daY, astX -> saY, 150 where 'Y's are the sequential numbers starting from zero for each type 151 in order of detection, unless configured otherwise with tunables, 152 see cam(4)). There will be symbolic links created in /dev/ to map 153 old adX devices to the respective adaY. They should provide basic 154 compatibility for file systems mounting in most cases, but they do 155 not support old user-level APIs and do not have respective providers 156 in GEOM. Consider using updated management tools with new device names. 157 158 It is possible to load devices ahci, ata, siis and mvs as modules, 159 but option ATA_CAM should remain in kernel configuration to make ata 160 module work as CAM driver supporting legacy ATA controllers. Device ata 161 still can be used in modular fashion (atacore + ...). Modules atadisk 162 and atapi* are not used and won't affect operation in ATA_CAM mode. 163 Note that to use CAM-based ATA kernel should include CAM devices 164 scbus, pass, da (or explicitly ada), cd and optionally others. All of 165 them are parts of the cam module. 166 167 ataraid(4) functionality is now supported by the RAID GEOM class. 168 To use it you can load geom_raid kernel module and use graid(8) tool 169 for management. Instead of /dev/arX device names, use /dev/raid/rX. 170 171 No kernel config options or code have been removed, so if a problem 172 arises, please report it and optionally revert to the old ATA stack. 173 In order to do it you can remove from the kernel config: 174 options ATA_CAM 175 device ahci 176 device mvs 177 device siis 178 , and instead add back: 179 device atadisk # ATA disk drives 180 device ataraid # ATA RAID drives 181 device atapicd # ATAPI CDROM drives 182 device atapifd # ATAPI floppy drives 183 device atapist # ATAPI tape drives 184 18520110423: 186 The default NFS server has been changed to the new server, which 187 was referred to as the experimental server. If you need to switch 188 back to the old NFS server, you must now put the "-o" option on 189 both the mountd and nfsd commands. This can be done using the 190 mountd_flags and nfs_server_flags rc.conf variables until an 191 update to the rc scripts is committed, which is coming soon. 192 19320110418: 194 The GNU Objective-C runtime library (libobjc), and other Objective-C 195 related components have been removed from the base system. If you 196 require an Objective-C library, please use one of the available ports. 197 19820110331: 199 ath(4) has been split into bus- and device- modules. if_ath contains 200 the HAL, the TX rate control and the network device code. if_ath_pci 201 contains the PCI bus glue. For Atheros MIPS embedded systems, if_ath_ahb 202 contains the AHB glue. Users need to load both if_ath_pci and if_ath 203 in order to use ath on everything else. 204 205 TO REPEAT: if_ath_ahb is not needed for normal users. Normal users only 206 need to load if_ath and if_ath_pci for ath(4) operation. 207 20820110314: 209 As part of the replacement of sysinstall, the process of building 210 release media has changed significantly. For details, please re-read 211 release(7), which has been updated to reflect the new build process. 212 21320110218: 214 GNU binutils 2.17.50 (as of 2007-07-03) has been merged to -HEAD. This 215 is the last available version under GPLv2. It brings a number of new 216 features, such as support for newer x86 CPU's (with SSE-3, SSSE-3, SSE 217 4.1 and SSE 4.2), better support for powerpc64, a number of new 218 directives, and lots of other small improvements. See the ChangeLog 219 file in contrib/binutils for the full details. 220 22120110218: 222 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868 223 compliant, and will now use half of hash for authentication. 224 This will break interoperability with all stacks (including all 225 actual FreeBSD versions) who implement 226 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for 227 authentication). 228 The only workaround with such peers is to use another HMAC 229 algorithm for IPsec ("phase 2") authentication. 230 23120110207: 232 Remove the uio_yield prototype and symbol. This function has 233 been misnamed since it was introduced and should not be 234 globally exposed with this name. The equivalent functionality 235 is now available using kern_yield(curthread->td_user_pri). 236 The function remains undocumented. 237 23820110112: 239 A SYSCTL_[ADD_]UQUAD was added for unsigned uint64_t pointers, 240 symmetric with the existing SYSCTL_[ADD_]QUAD. Type checking 241 for scalar sysctls is defined but disabled. Code that needs 242 UQUAD to pass the type checking that must compile on older 243 systems where the define is not present can check against 244 __FreeBSD_version >= 900030. 245 246 The system dialog(1) has been replaced with a new version previously 247 in ports as devel/cdialog. dialog(1) is mostly command-line compatible 248 with the previous version, but the libdialog associated with it has 249 a largely incompatible API. As such, the original version of libdialog 250 will be kept temporarily as libodialog, until its base system consumers 251 are replaced or updated. Bump __FreeBSD_version to 900030. 252 25320110103: 254 If you are trying to run make universe on a -stable system, and you get 255 the following warning: 256 "Makefile", line 356: "Target architecture for i386/conf/GENERIC 257 unknown. config(8) likely too old." 258 or something similar to it, then you must upgrade your -stable system 259 to 8.2-Release or newer (really, any time after r210146 7/15/2010 in 260 stable/8) or build the config from the latest stable/8 branch and 261 install it on your system. 262 263 Prior to this date, building a current universe on 8-stable system from 264 between 7/15/2010 and 1/2/2011 would result in a weird shell parsing 265 error in the first kernel build phase. A new config on those old 266 systems will fix that problem for older versions of -current. 267 26820101228: 269 The TCP stack has been modified to allow Khelp modules to interact with 270 it via helper hook points and store per-connection data in the TCP 271 control block. Bump __FreeBSD_version to 900029. User space tools that 272 rely on the size of struct tcpcb in tcp_var.h (e.g. sockstat) need to 273 be recompiled. 274 27520101114: 276 Generic IEEE 802.3 annex 31B full duplex flow control support has been 277 added to mii(4) and bge(4), bce(4), msk(4), nfe(4) and stge(4) along 278 with brgphy(4), e1000phy(4) as well as ip1000phy() have been converted 279 to take advantage of it instead of using custom implementations. This 280 means that these drivers now no longer unconditionally advertise 281 support for flow control but only do so if flow control is a selected 282 media option. This was implemented in the generic support that way in 283 order to allow flow control to be switched on and off via ifconfig(8) 284 with the PHY specific default to typically off in order to protect 285 from unwanted effects. Consequently, if you used flow control with 286 one of the above mentioned drivers you now need to explicitly enable 287 it, for example via: 288 ifconfig bge0 media auto mediaopt flowcontrol 289 290 Along with the above mentioned changes generic support for setting 291 1000baseT master mode also has been added and brgphy(4), ciphy(4), 292 e1000phy(4) as well as ip1000phy(4) have been converted to take 293 advantage of it. This means that these drivers now no longer take the 294 link0 parameter for selecting master mode but the master media option 295 has to be used instead, for example like in the following: 296 ifconfig bge0 media 1000baseT mediaopt full-duplex,master 297 298 Selection of master mode now is also available with all other PHY 299 drivers supporting 1000baseT. 300 30120101111: 302 The TCP stack has received a significant update to add support for 303 modularised congestion control and generally improve the clarity of 304 congestion control decisions. Bump __FreeBSD_version to 900025. User 305 space tools that rely on the size of struct tcpcb in tcp_var.h (e.g. 306 sockstat) need to be recompiled. 307 30820101002: 309 The man(1) utility has been replaced by a new version that no longer 310 uses /etc/manpath.config. Please consult man.conf(5) for how to 311 migrate local entries to the new format. 312 31320100928: 314 The copyright strings printed by login(1) and sshd(8) at the time of a 315 new connection have been removed to follow other operating systems and 316 upstream sshd. 317 31820100915: 319 A workaround for a fixed ld bug has been removed in kernel code, 320 so make sure that your system ld is built from sources after 321 revision 210245 from 2010-07-19 (r211583 if building head kernel 322 on stable/8, r211584 for stable/7; both from 2010-08-21). 323 A symptom of incorrect ld version is different addresses for 324 set_pcpu section and __start_set_pcpu symbol in kernel and/or modules. 325 32620100913: 327 The $ipv6_prefer variable in rc.conf(5) has been split into 328 $ip6addrctl_policy and $ipv6_activate_all_interfaces. 329 330 The $ip6addrctl_policy is a variable to choose a pre-defined 331 address selection policy set by ip6addrctl(8). A value 332 "ipv4_prefer", "ipv6_prefer" or "AUTO" can be specified. The 333 default is "AUTO". 334 335 The $ipv6_activate_all_interfaces specifies whether IFDISABLED 336 flag (see an entry of 20090926) is set on an interface with no 337 corresponding $ifconfig_IF_ipv6 line. The default is "NO" for 338 security reason. If you want IPv6 link-local address on all 339 interfaces by default, set this to "YES". 340 341 The old ipv6_prefer="YES" is equivalent to 342 ipv6_activate_all_interfaces="YES" and 343 ip6addrctl_policy="ipv6_prefer". 344 34520100913: 346 DTrace has grown support for userland tracing. Due to this, DTrace is 347 now i386 and amd64 only. 348 dtruss(1) is now installed by default on those systems and a new 349 kernel module is needed for userland tracing: fasttrap. 350 No changes to your kernel config file are necessary to enable 351 userland tracing, but you might consider adding 'STRIP=' and 352 'CFLAGS+=-fno-omit-frame-pointer' to your make.conf if you want 353 to have informative userland stack traces in DTrace (ustack). 354 35520100725: 356 The acpi_aiboost(4) driver has been removed in favor of the new 357 aibs(4) driver. You should update your kernel configuration file. 358 35920100722: 360 BSD grep has been imported to the base system and it is built by 361 default. It is completely BSD licensed, highly GNU-compatible, uses 362 less memory than its GNU counterpart and has a small codebase. 363 However, it is slower than its GNU counterpart, which is mostly 364 noticeable for larger searches, for smaller ones it is measurable 365 but not significant. The reason is complex, the most important factor 366 is that we lack a modern and efficient regex library and GNU 367 overcomes this by optimizing the searches internally. Future work 368 on improving the regex performance is planned, for the meantime, 369 users that need better performance, can build GNU grep instead by 370 setting the WITH_GNU_GREP knob. 371 37220100713: 373 Due to the import of powerpc64 support, all existing powerpc kernel 374 configuration files must be updated with a machine directive like this: 375 machine powerpc powerpc 376 377 In addition, an updated config(8) is required to build powerpc kernels 378 after this change. 379 38020100713: 381 A new version of ZFS (version 15) has been merged to -HEAD. 382 This version uses a python library for the following subcommands: 383 zfs allow, zfs unallow, zfs groupspace, zfs userspace. 384 For full functionality of these commands the following port must 385 be installed: sysutils/py-zfs 386 38720100429: 388 'vm_page's are now hashed by physical address to an array of mutexes. 389 Currently this is only used to serialize access to hold_count. Over 390 time the page queue mutex will be peeled away. This changes the size 391 of pmap on every architecture. And requires all callers of vm_page_hold 392 and vm_page_unhold to be updated. 393 39420100402: 395 WITH_CTF can now be specified in src.conf (not recommended, there 396 are some problems with static executables), make.conf (would also 397 affect ports which do not use GNU make and do not override the 398 compile targets) or in the kernel config (via "makeoptions 399 WITH_CTF=yes"). 400 When WITH_CTF was specified there before this was silently ignored, 401 so make sure that WITH_CTF is not used in places which could lead 402 to unwanted behavior. 403 40420100311: 405 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32 406 to allow 32-bit compatibility on non-x86 platforms. All kernel 407 configurations on amd64 and ia64 platforms using these options must 408 be modified accordingly. 409 41020100113: 411 The utmp user accounting database has been replaced with utmpx, 412 the user accounting interface standardized by POSIX. 413 Unfortunately the semantics of utmp and utmpx don't match, 414 making it practically impossible to support both interfaces. 415 The user accounting database is used by tools like finger(1), 416 last(1), talk(1), w(1) and ac(8). 417 418 All applications in the base system use utmpx. This means only 419 local binaries (e.g. from the ports tree) may still use these 420 utmp database files. These applications must be rebuilt to make 421 use of utmpx. 422 423 After the system has been upgraded, it is safe to remove the old 424 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*), 425 assuming their contents is of no importance anymore. Old wtmp 426 databases can only be used by last(1) and ac(8) after they have 427 been converted to the new format using wtmpcvt(1). 428 42920100108: 430 Introduce the kernel thread "deadlock resolver" (which can be enabled 431 via the DEADLKRES option, see NOTES for more details) and the 432 sleepq_type() function for sleepqueues. 433 43420091202: 435 The rc.firewall and rc.firewall6 were unified, and 436 rc.firewall6 and rc.d/ip6fw were removed. 437 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc 438 variables are obsoleted. Instead, the following new rc 439 variables are added to rc.d/ipfw: 440 441 firewall_client_net_ipv6, firewall_simple_iif_ipv6, 442 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6, 443 firewall_simple_onet_ipv6, firewall_trusted_ipv6 444 445 The meanings correspond to the relevant IPv4 variables. 446 44720091125: 448 8.0-RELEASE. 449 45020091113: 451 The default terminal emulation for syscons(4) has been changed 452 from cons25 to xterm on all platforms except pc98. This means 453 that the /etc/ttys file needs to be updated to ensure correct 454 operation of applications on the console. 455 456 The terminal emulation style can be toggled per window by using 457 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration 458 options can be used to change the compile-time default back to 459 cons25. 460 461 To prevent graphical artifacts, make sure the TERM environment 462 variable is set to match the terminal emulation that is being 463 performed by syscons(4). 464 46520091109: 466 The layout of the structure ieee80211req_scan_result has changed. 467 Applications that require wireless scan results (e.g. ifconfig(8)) 468 from net80211 need to be recompiled. 469 470 Applications such as wpa_supplicant(8) may require a full world 471 build without using NO_CLEAN in order to get synchronized with the 472 new structure. 473 47420091025: 475 The iwn(4) driver has been updated to support the 5000 and 5150 series. 476 There's one kernel module for each firmware. Adding "device iwnfw" 477 to the kernel configuration file means including all three firmware 478 images inside the kernel. If you want to include just the one for 479 your wireless card, use the devices iwn4965fw, iwn5000fw or 480 iwn5150fw. 481 48220090926: 483 The rc.d/network_ipv6, IPv6 configuration script has been integrated 484 into rc.d/netif. The changes are the following: 485 486 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF 487 for IPv4. For aliases, $ifconfig_IF_aliasN should be used. 488 Note that both variables need the "inet6" keyword at the head. 489 490 Do not set $ipv6_network_interfaces manually if you do not 491 understand what you are doing. It is not needed in most cases. 492 493 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but 494 they are obsolete. 495 496 2. $ipv6_enable is obsolete. Use $ipv6_prefer and 497 "inet6 accept_rtadv" keyword in ifconfig(8) instead. 498 499 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and 500 all configured interfaces have "inet6 accept_rtadv" in the 501 $ifconfig_IF_ipv6. These are for backward compatibility. 502 503 3. A new variable $ipv6_prefer has been added. If NO, IPv6 504 functionality of interfaces with no corresponding 505 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag, 506 and the default address selection policy of ip6addrctl(8) 507 is the IPv4-preferred one (see rc.d/ip6addrctl for more details). 508 Note that if you want to configure IPv6 functionality on the 509 disabled interfaces after boot, first you need to clear the flag by 510 using ifconfig(8) like: 511 512 ifconfig em0 inet6 -ifdisabled 513 514 If YES, the default address selection policy is set as 515 IPv6-preferred. 516 517 The default value of $ipv6_prefer is NO. 518 519 4. If your system need to receive Router Advertisement messages, 520 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8) 521 scripts automatically invoke rtsol(8) when the interface becomes 522 UP. The Router Advertisement messages are used for SLAAC 523 (State-Less Address AutoConfiguration). 524 52520090922: 526 802.11s D3.03 support was committed. This is incompatible with the 527 previous code, which was based on D3.0. 528 52920090912: 530 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value 531 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to 532 control whether accepting Router Advertisement messages or not. 533 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and 534 a sysctl variable net.inet6.ip6.auto_linklocal is its default value. 535 The ifconfig(8) utility now supports these flags. 536 53720090910: 538 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for 539 mount(8) and -a option for df(1) to see them. 540 54120090825: 542 The old tunable hw.bus.devctl_disable has been superseded by 543 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be 544 replaced by hw.bus.devctl_queue=0. The default for this new tunable 545 is 1000. 546 54720090813: 548 Remove the option STOP_NMI. The default action is now to use NMI only 549 for KDB via the newly introduced function stop_cpus_hard() and 550 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64. 551 55220090803: 553 The stable/8 branch created in subversion. This corresponds to the 554 RELENG_8 branch in CVS. 555 55620090719: 557 Bump the shared library version numbers for all libraries that do not 558 use symbol versioning as part of the 8.0-RELEASE cycle. Bump 559 __FreeBSD_version to 800105. 560 56120090714: 562 Due to changes in the implementation of virtual network stack support, 563 all network-related kernel modules must be recompiled. As this change 564 breaks the ABI, bump __FreeBSD_version to 800104. 565 56620090713: 567 The TOE interface to the TCP syncache has been modified to remove 568 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. 569 The cxgb driver is the only TOE consumer affected by this change, and 570 needs to be recompiled along with the kernel. As this change breaks 571 the ABI, bump __FreeBSD_version to 800103. 572 57320090712: 574 Padding has been added to struct tcpcb, sackhint and tcpstat in 575 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst 576 maintaining the ABI. However, this change breaks the ABI, so bump 577 __FreeBSD_version to 800102. User space tools that rely on the size of 578 any of these structs (e.g. sockstat) need to be recompiled. 579 58020090630: 581 The NFS_LEGACYRPC option has been removed along with the old kernel 582 RPC implementation that this option selected. Kernel configurations 583 may need to be adjusted. 584 58520090629: 586 The network interface device nodes at /dev/net/<interface> have been 587 removed. All ioctl operations can be performed the normal way using 588 routing sockets. The kqueue functionality can generally be replaced 589 with routing sockets. 590 59120090628: 592 The documentation from the FreeBSD Documentation Project (Handbook, 593 FAQ, etc.) is now installed via packages by sysinstall(8) and under 594 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc. 595 59620090624: 597 The ABI of various structures related to the SYSV IPC API have been 598 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel 599 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to 600 800100. 601 60220090622: 603 Layout of struct vnet has changed as routing related variables were 604 moved to their own Vimage module. Modules need to be recompiled. Bump 605 __FreeBSD_version to 800099. 606 60720090619: 608 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024 609 respectively. As long as no more than 16 groups per process are used, 610 no changes should be visible. When more than 16 groups are used, old 611 binaries may fail if they call getgroups() or getgrouplist() with 612 statically sized storage. Recompiling will work around this, but 613 applications should be modified to use dynamically allocated storage 614 for group arrays as POSIX.1-2008 does not cap an implementation's 615 number of supported groups at NGROUPS_MAX+1 as previous versions did. 616 617 NFS and portalfs mounts may also be affected as the list of groups is 618 truncated to 16. Users of NFS who use more than 16 groups, should 619 take care that negative group permissions are not used on the exported 620 file systems as they will not be reliable unless a GSSAPI based 621 authentication method is used. 622 62320090616: 624 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This 625 option compiles in the support for adaptive spinning for lockmgrs 626 which want to enable it. The lockinit() function now accepts the flag 627 LK_ADAPTIVE in order to make the lock object subject to adaptive 628 spinning when both held in write and read mode. 629 63020090613: 631 The layout of the structure returned by IEEE80211_IOC_STA_INFO has 632 changed. User applications that use this ioctl need to be rebuilt. 633 63420090611: 635 The layout of struct thread has changed. Kernel and modules need to 636 be rebuilt. 637 63820090608: 639 The layout of structs ifnet, domain, protosw and vnet_net has changed. 640 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097. 641 64220090602: 643 window(1) has been removed from the base system. It can now be 644 installed from ports. The port is called misc/window. 645 64620090601: 647 The way we are storing and accessing `routing table' entries has 648 changed. Programs reading the FIB, like netstat, need to be 649 re-compiled. 650 65120090601: 652 A new netisr implementation has been added for FreeBSD 8. Network 653 file system modules, such as igmp, ipdivert, and others, should be 654 rebuilt. 655 Bump __FreeBSD_version to 800096. 656 65720090530: 658 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no 659 more valid. 660 66120090530: 662 Add VOP_ACCESSX(9). File system modules need to be rebuilt. 663 Bump __FreeBSD_version to 800094. 664 66520090529: 666 Add mnt_xflag field to 'struct mount'. File system modules need to be 667 rebuilt. 668 Bump __FreeBSD_version to 800093. 669 67020090528: 671 The compiling option ADAPTIVE_SX has been retired while it has been 672 introduced the option NO_ADAPTIVE_SX which handles the reversed logic. 673 The KPI for sx_init_flags() changes as accepting flags: 674 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has 675 been introduced in order to handle the reversed logic. 676 Bump __FreeBSD_version to 800092. 677 67820090527: 679 Add support for hierarchical jails. Remove global securelevel. 680 Bump __FreeBSD_version to 800091. 681 68220090523: 683 The layout of struct vnet_net has changed, therefore modules 684 need to be rebuilt. 685 Bump __FreeBSD_version to 800090. 686 68720090523: 688 The newly imported zic(8) produces a new format in the output. Please 689 run tzsetup(8) to install the newly created data to /etc/localtime. 690 69120090520: 692 The sysctl tree for the usb stack has renamed from hw.usb2.* to 693 hw.usb.* and is now consistent again with previous releases. 694 69520090520: 696 802.11 monitor mode support was revised and driver api's were changed. 697 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead 698 of DLT_IEEE802_11. No user-visible data structures were changed but 699 applications that use DLT_IEEE802_11 may require changes. 700 Bump __FreeBSD_version to 800088. 701 70220090430: 703 The layout of the following structs has changed: sysctl_oid, 704 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet, 705 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or 706 panics may be experienced. World rebuild is required for 707 correctly checking networking state from userland. 708 Bump __FreeBSD_version to 800085. 709 71020090429: 711 MLDv2 and Source-Specific Multicast (SSM) have been merged 712 to the IPv6 stack. VIMAGE hooks are in but not yet used. 713 The implementation of SSM within FreeBSD's IPv6 stack closely 714 follows the IPv4 implementation. 715 716 For kernel developers: 717 718 * The most important changes are that the ip6_output() and 719 ip6_input() paths no longer take the IN6_MULTI_LOCK, 720 and this lock has been downgraded to a non-recursive mutex. 721 722 * As with the changes to the IPv4 stack to support SSM, filtering 723 of inbound multicast traffic must now be performed by transport 724 protocols within the IPv6 stack. This does not apply to TCP and 725 SCTP, however, it does apply to UDP in IPv6 and raw IPv6. 726 727 * The KPIs used by IPv6 multicast are similar to those used by 728 the IPv4 stack, with the following differences: 729 * im6o_mc_filter() is analogous to imo_multicast_filter(). 730 * The legacy KAME entry points in6_joingroup and in6_leavegroup() 731 are shimmed to in6_mc_join() and in6_mc_leave() respectively. 732 * IN6_LOOKUP_MULTI() has been deprecated and removed. 733 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs 734 for MLDv1 have an additional 'timer' argument which is used to 735 jitter the initial membership report for the solicited-node 736 multicast membership on-link. 737 * This is not strictly needed for MLDv2, which already jitters 738 its report transmissions. However, the 'timer' argument is 739 preserved in case MLDv1 is active on the interface. 740 741 * The KAME linked-list based IPv6 membership implementation has 742 been refactored to use a vector similar to that used by the IPv4 743 stack. 744 Code which maintains a list of its own multicast memberships 745 internally, e.g. carp, has been updated to reflect the new 746 semantics. 747 748 * There is a known Lock Order Reversal (LOR) due to in6_setscope() 749 acquiring the IF_AFDATA_LOCK and being called within ip6_output(). 750 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an 751 implementation constraint which needs to be addressed in HEAD. 752 753 For application developers: 754 755 * The changes are broadly similar to those made for the IPv4 756 stack. 757 758 * The use of IPv4 and IPv6 multicast socket options on the same 759 socket, using mapped addresses, HAS NOT been tested or supported. 760 761 * There are a number of issues with the implementation of various 762 IPv6 multicast APIs which need to be resolved in the API surface 763 before the implementation is fully compatible with KAME userland 764 use, and these are mostly to do with interface index treatment. 765 766 * The literature available discusses the use of either the delta / ASM 767 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API 768 using setsourcefilter(3)/getsourcefilter(3). For more information 769 please refer to RFC 3768, 'Socket Interface Extensions for 770 Multicast Source Filters'. 771 772 * Applications which use the published RFC 3678 APIs should be fine. 773 774 For systems administrators: 775 776 * The mtest(8) utility has been refactored to support IPv6, in 777 addition to IPv4. Interface addresses are no longer accepted 778 as arguments, their names must be used instead. The utility 779 will map the interface name to its first IPv4 address as 780 returned by getifaddrs(3). 781 782 * The ifmcstat(8) utility has also been updated to print the MLDv2 783 endpoint state and source filter lists via sysctl(3). 784 785 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable 786 loopback of IPv6 multicast datagrams by default; it defaults to 1 787 to preserve the existing behaviour. Disabling multicast loopback is 788 recommended for optimal system performance. 789 790 * The IPv6 MROUTING code has been changed to examine this sysctl 791 instead of attempting to perform a group lookup before looping 792 back forwarded datagrams. 793 794 Bump __FreeBSD_version to 800084. 795 79620090422: 797 Implement low-level Bluetooth HCI API. 798 Bump __FreeBSD_version to 800083. 799 80020090419: 801 The layout of struct malloc_type, used by modules to register new 802 memory allocation types, has changed. Most modules will need to 803 be rebuilt or panics may be experienced. 804 Bump __FreeBSD_version to 800081. 805 80620090415: 807 Anticipate overflowing inp_flags - add inp_flags2. 808 This changes most offsets in inpcb, so checking v4 connection 809 state will require a world rebuild. 810 Bump __FreeBSD_version to 800080. 811 81220090415: 813 Add an llentry to struct route and struct route_in6. Modules 814 embedding a struct route will need to be recompiled. 815 Bump __FreeBSD_version to 800079. 816 81720090414: 818 The size of rt_metrics_lite and by extension rtentry has changed. 819 Networking administration apps will need to be recompiled. 820 The route command now supports show as an alias for get, weighting 821 of routes, sticky and nostick flags to alter the behavior of stateful 822 load balancing. 823 Bump __FreeBSD_version to 800078. 824 82520090408: 826 Do not use Giant for kbdmux(4) locking. This is wrong and 827 apparently causing more problems than it solves. This will 828 re-open the issue where interrupt handlers may race with 829 kbdmux(4) in polling mode. Typical symptoms include (but 830 not limited to) duplicated and/or missing characters when 831 low level console functions (such as gets) are used while 832 interrupts are enabled (for example geli password prompt, 833 mountroot prompt etc.). Disabling kbdmux(4) may help. 834 83520090407: 836 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed; 837 kernel modules referencing any of the above need to be recompiled. 838 Bump __FreeBSD_version to 800075. 839 84020090320: 841 GEOM_PART has become the default partition slicer for storage devices, 842 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It 843 introduces some changes: 844 845 MSDOS/EBR: the devices created from MSDOS extended partition entries 846 (EBR) can be named differently than with GEOM_MBR and are now symlinks 847 to devices with offset-based names. fstabs may need to be modified. 848 849 BSD: the "geometry does not match label" warning is harmless in most 850 cases but it points to problems in file system misalignment with 851 disk geometry. The "c" partition is now implicit, covers the whole 852 top-level drive and cannot be (mis)used by users. 853 854 General: Kernel dumps are now not allowed to be written to devices 855 whose partition types indicate they are meant to be used for file 856 systems (or, in case of MSDOS partitions, as something else than 857 the "386BSD" type). 858 859 Most of these changes date approximately from 200812. 860 86120090319: 862 The uscanner(4) driver has been removed from the kernel. This follows 863 Linux removing theirs in 2.6 and making libusb the default interface 864 (supported by sane). 865 86620090319: 867 The multicast forwarding code has been cleaned up. netstat(1) 868 only relies on KVM now for printing bandwidth upcall meters. 869 The IPv4 and IPv6 modules are split into ip_mroute_mod and 870 ip6_mroute_mod respectively. The config(5) options for statically 871 compiling this code remain the same, i.e. 'options MROUTING'. 872 87320090315: 874 Support for the IFF_NEEDSGIANT network interface flag has been 875 removed, which means that non-MPSAFE network device drivers are no 876 longer supported. In particular, if_ar, if_sr, and network device 877 drivers from the old (legacy) USB stack can no longer be built or 878 used. 879 88020090313: 881 POSIX.1 Native Language Support (NLS) has been enabled in libc and 882 a bunch of new language catalog files have also been added. 883 This means that some common libc messages are now localized and 884 they depend on the LC_MESSAGES environmental variable. 885 88620090313: 887 The k8temp(4) driver has been renamed to amdtemp(4) since 888 support for Family 10 and Family 11 CPU families was added. 889 89020090309: 891 IGMPv3 and Source-Specific Multicast (SSM) have been merged 892 to the IPv4 stack. VIMAGE hooks are in but not yet used. 893 894 For kernel developers, the most important changes are that the 895 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(), 896 and this lock has been downgraded to a non-recursive mutex. 897 898 Transport protocols (UDP, Raw IP) are now responsible for filtering 899 inbound multicast traffic according to group membership and source 900 filters. The imo_multicast_filter() KPI exists for this purpose. 901 Transports which do not use multicast (SCTP, TCP) already reject 902 multicast by default. Forwarding and receive performance may improve 903 as a mutex acquisition is no longer needed in the ip_input() 904 low-level input path. in_addmulti() and in_delmulti() are shimmed 905 to new KPIs which exist to support SSM in-kernel. 906 907 For application developers, it is recommended that loopback of 908 multicast datagrams be disabled for best performance, as this 909 will still cause the lock to be taken for each looped-back 910 datagram transmission. The net.inet.ip.mcast.loop sysctl may 911 be tuned to 0 to disable loopback by default; it defaults to 1 912 to preserve the existing behaviour. 913 914 For systems administrators, to obtain best performance with 915 multicast reception and multiple groups, it is always recommended 916 that a card with a suitably precise hash filter is used. Hash 917 collisions will still result in the lock being taken within the 918 transport protocol input path to check group membership. 919 920 If deploying FreeBSD in an environment with IGMP snooping switches, 921 it is recommended that the net.inet.igmp.sendlocal sysctl remain 922 enabled; this forces 224.0.0.0/24 group membership to be announced 923 via IGMP. 924 925 The size of 'struct igmpstat' has changed; netstat needs to be 926 recompiled to reflect this. 927 Bump __FreeBSD_version to 800070. 928 92920090309: 930 libusb20.so.1 is now installed as libusb.so.1 and the ports system 931 updated to use it. This requires a buildworld/installworld in order to 932 update the library and dependencies (usbconfig, etc). Its advisable to 933 rebuild all ports which uses libusb. More specific directions are given 934 in the ports collection UPDATING file. Any /etc/libmap.conf entries for 935 libusb are no longer required and can be removed. 936 93720090302: 938 A workaround is committed to allow the creation of System V shared 939 memory segment of size > 2 GB on the 64-bit architectures. 940 Due to a limitation of the existing ABI, the shm_segsz member 941 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is 942 wrong for large segments. Note that limits must be explicitly 943 raised to allow such segments to be created. 944 94520090301: 946 The layout of struct ifnet has changed, requiring a rebuild of all 947 network device driver modules. 948 94920090227: 950 The /dev handling for the new USB stack has changed, a 951 buildworld/installworld is required for libusb20. 952 95320090223: 954 The new USB2 stack has now been permanently moved in and all kernel and 955 module names reverted to their previous values (eg, usb, ehci, ohci, 956 ums, ...). The old usb stack can be compiled in by prefixing the name 957 with the letter 'o', the old usb modules have been removed. 958 Updating entry 20090216 for xorg and 20090215 for libmap may still 959 apply. 960 96120090217: 962 The rc.conf(5) option if_up_delay has been renamed to 963 defaultroute_delay to better reflect its purpose. If you have 964 customized this setting in /etc/rc.conf you need to update it to 965 use the new name. 966 96720090216: 968 xorg 7.4 wants to configure its input devices via hald which does not 969 yet work with USB2. If the keyboard/mouse does not work in xorg then 970 add 971 Option "AllowEmptyInput" "off" 972 to your ServerLayout section. This will cause X to use the configured 973 kbd and mouse sections from your xorg.conf. 974 97520090215: 976 The GENERIC kernels for all architectures now default to the new USB2 977 stack. No kernel config options or code have been removed so if a 978 problem arises please report it and optionally revert to the old USB 979 stack. If you are loading USB kernel modules or have a custom kernel 980 that includes GENERIC then ensure that usb names are also changed over, 981 eg uftdi -> usb2_serial_ftdi. 982 983 Older programs linked against the ports libusb 0.1 need to be 984 redirected to the new stack's libusb20. /etc/libmap.conf can 985 be used for this: 986 # Map old usb library to new one for usb2 stack 987 libusb-0.1.so.8 libusb20.so.1 988 98920090209: 990 All USB ethernet devices now attach as interfaces under the name ueN 991 (eg. ue0). This is to provide a predictable name as vendors often 992 change usb chipsets in a product without notice. 993 99420090203: 995 The ichsmb(4) driver has been changed to require SMBus slave 996 addresses be left-justified (xxxxxxx0b) rather than right-justified. 997 All of the other SMBus controller drivers require left-justified 998 slave addresses, so this change makes all the drivers provide the 999 same interface. 1000 100120090201: 1002 INET6 statistics (struct ip6stat) was updated. 1003 netstat(1) needs to be recompiled. 1004 100520090119: 1006 NTFS has been removed from GENERIC kernel on amd64 to match 1007 GENERIC on i386. Should not cause any issues since mount_ntfs(8) 1008 will load ntfs.ko module automatically when NTFS support is 1009 actually needed, unless ntfs.ko is not installed or security 1010 level prohibits loading kernel modules. If either is the case, 1011 "options NTFS" has to be added into kernel config. 1012 101320090115: 1014 TCP Appropriate Byte Counting (RFC 3465) support added to kernel. 1015 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to 1016 800061. User space tools that rely on the size of struct tcpcb in 1017 tcp_var.h (e.g. sockstat) need to be recompiled. 1018 101920081225: 1020 ng_tty(4) module updated to match the new TTY subsystem. 1021 Due to API change, user-level applications must be updated. 1022 New API support added to mpd5 CVS and expected to be present 1023 in next mpd5.3 release. 1024 102520081219: 1026 With __FreeBSD_version 800060 the makefs tool is part of 1027 the base system (it was a port). 1028 102920081216: 1030 The afdata and ifnet locks have been changed from mutexes to 1031 rwlocks, network modules will need to be re-compiled. 1032 103320081214: 1034 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite. 1035 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated. 1036 The new code reduced struct rtentry{} by 16 bytes on 32-bit 1037 architecture and 40 bytes on 64-bit architecture. The userland 1038 applications "arp" and "ndp" have been updated accordingly. 1039 The output from "netstat -r" shows only routing entries and 1040 none of the L2 information. 1041 104220081130: 1043 __FreeBSD_version 800057 marks the switchover from the 1044 binary ath hal to source code. Users must add the line: 1045 1046 options AH_SUPPORT_AR5416 1047 1048 to their kernel config files when specifying: 1049 1050 device ath_hal 1051 1052 The ath_hal module no longer exists; the code is now compiled 1053 together with the driver in the ath module. It is now 1054 possible to tailor chip support (i.e. reduce the set of chips 1055 and thereby the code size); consult ath_hal(4) for details. 1056 105720081121: 1058 __FreeBSD_version 800054 adds memory barriers to 1059 <machine/atomic.h>, new interfaces to ifnet to facilitate 1060 multiple hardware transmit queues for cards that support 1061 them, and a lock-less ring-buffer implementation to 1062 enable drivers to more efficiently manage queueing of 1063 packets. 1064 106520081117: 1066 A new version of ZFS (version 13) has been merged to -HEAD. 1067 This version has zpool attribute "listsnapshots" off by 1068 default, which means "zfs list" does not show snapshots, 1069 and is the same as Solaris behavior. 1070 107120081028: 1072 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled. 1073 107420081009: 1075 The uhci, ohci, ehci and slhci USB Host controller drivers have 1076 been put into separate modules. If you load the usb module 1077 separately through loader.conf you will need to load the 1078 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0 1079 controller add the following to loader.conf: 1080 1081 uhci_load="YES" 1082 ehci_load="YES" 1083 108420081009: 1085 The ABI used by the PMC toolset has changed. Please keep 1086 userland (libpmc(3)) and the kernel module (hwpmc(4)) in 1087 sync. 1088 108920081009: 1090 atapci kernel module now includes only generic PCI ATA 1091 driver. AHCI driver moved to ataahci kernel module. 1092 All vendor-specific code moved into separate kernel modules: 1093 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek, 1094 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron, 1095 atamarvell, atamicron, atanational, atanetcell, atanvidia, 1096 atapromise, ataserverworks, atasiliconimage, atasis, atavia 1097 109820080820: 1099 The TTY subsystem of the kernel has been replaced by a new 1100 implementation, which provides better scalability and an 1101 improved driver model. Most common drivers have been migrated to 1102 the new TTY subsystem, while others have not. The following 1103 drivers have not yet been ported to the new TTY layer: 1104 1105 PCI/ISA: 1106 cy, digi, rc, rp, sio 1107 1108 USB: 1109 ubser, ucycom 1110 1111 Line disciplines: 1112 ng_h4, ng_tty, ppp, sl, snp 1113 1114 Adding these drivers to your kernel configuration file shall 1115 cause compilation to fail. 1116 111720080818: 1118 ntpd has been upgraded to 4.2.4p5. 1119 112020080801: 1121 OpenSSH has been upgraded to 5.1p1. 1122 1123 For many years, FreeBSD's version of OpenSSH preferred DSA 1124 over RSA for host and user authentication keys. With this 1125 upgrade, we've switched to the vendor's default of RSA over 1126 DSA. This may cause upgraded clients to warn about unknown 1127 host keys even for previously known hosts. Users should 1128 follow the usual procedure for verifying host keys before 1129 accepting the RSA key. 1130 1131 This can be circumvented by setting the "HostKeyAlgorithms" 1132 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh 1133 command line. 1134 1135 Please note that the sequence of keys offered for 1136 authentication has been changed as well. You may want to 1137 specify IdentityFile in a different order to revert this 1138 behavior. 1139 114020080713: 1141 The sio(4) driver has been removed from the i386 and amd64 1142 kernel configuration files. This means uart(4) is now the 1143 default serial port driver on those platforms as well. 1144 1145 To prevent collisions with the sio(4) driver, the uart(4) driver 1146 uses different names for its device nodes. This means the 1147 onboard serial port will now most likely be called "ttyu0" 1148 instead of "ttyd0". You may need to reconfigure applications to 1149 use the new device names. 1150 1151 When using the serial port as a boot console, be sure to update 1152 /boot/device.hints and /etc/ttys before booting the new kernel. 1153 If you forget to do so, you can still manually specify the hints 1154 at the loader prompt: 1155 1156 set hint.uart.0.at="isa" 1157 set hint.uart.0.port="0x3F8" 1158 set hint.uart.0.flags="0x10" 1159 set hint.uart.0.irq="4" 1160 boot -s 1161 116220080609: 1163 The gpt(8) utility has been removed. Use gpart(8) to partition 1164 disks instead. 1165 116620080603: 1167 The version that Linuxulator emulates was changed from 2.4.2 1168 to 2.6.16. If you experience any problems with Linux binaries 1169 please try to set sysctl compat.linux.osrelease to 2.4.2 and 1170 if it fixes the problem contact emulation mailing list. 1171 117220080525: 1173 ISDN4BSD (I4B) was removed from the src tree. You may need to 1174 update a your kernel configuration and remove relevant entries. 1175 117620080509: 1177 I have checked in code to support multiple routing tables. 1178 See the man pages setfib(1) and setfib(2). 1179 This is a hopefully backwards compatible version, 1180 but to make use of it you need to compile your kernel 1181 with options ROUTETABLES=2 (or more up to 16). 1182 118320080420: 1184 The 802.11 wireless support was redone to enable multi-bss 1185 operation on devices that are capable. The underlying device 1186 is no longer used directly but instead wlanX devices are 1187 cloned with ifconfig. This requires changes to rc.conf files. 1188 For example, change: 1189 ifconfig_ath0="WPA DHCP" 1190 to 1191 wlans_ath0=wlan0 1192 ifconfig_wlan0="WPA DHCP" 1193 see rc.conf(5) for more details. In addition, mergemaster of 1194 /etc/rc.d is highly recommended. Simultaneous update of userland 1195 and kernel wouldn't hurt either. 1196 1197 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta 1198 modules were merged into the base wlan module. All references 1199 to these modules (e.g. in kernel config files) must be removed. 1200 120120080408: 1202 psm(4) has gained write(2) support in native operation level. 1203 Arbitrary commands can be written to /dev/psm%d and status can 1204 be read back from it. Therefore, an application is responsible 1205 for status validation and error recovery. It is a no-op in 1206 other operation levels. 1207 120820080312: 1209 Support for KSE threading has been removed from the kernel. To 1210 run legacy applications linked against KSE libmap.conf may 1211 be used. The following libmap.conf may be used to ensure 1212 compatibility with any prior release: 1213 1214 libpthread.so.1 libthr.so.1 1215 libpthread.so.2 libthr.so.2 1216 libkse.so.3 libthr.so.3 1217 121820080301: 1219 The layout of struct vmspace has changed. This affects libkvm 1220 and any executables that link against libkvm and use the 1221 kvm_getprocs() function. In particular, but not exclusively, 1222 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1). 1223 The effects are minimal, but it's advisable to upgrade world 1224 nonetheless. 1225 122620080229: 1227 The latest em driver no longer has support in it for the 1228 82575 adapter, this is now moved to the igb driver. The 1229 split was done to make new features that are incompatible 1230 with older hardware easier to do. 1231 123220080220: 1233 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4), 1234 likewise the kernel option is now GEOM_LINUX_LVM. 1235 123620080211: 1237 The default NFS mount mode has changed from UDP to TCP for 1238 increased reliability. If you rely on (insecurely) NFS 1239 mounting across a firewall you may need to update your 1240 firewall rules. 1241 124220080208: 1243 Belatedly note the addition of m_collapse for compacting 1244 mbuf chains. 1245 124620080126: 1247 The fts(3) structures have been changed to use adequate 1248 integer types for their members and so to be able to cope 1249 with huge file trees. The old fts(3) ABI is preserved 1250 through symbol versioning in libc, so third-party binaries 1251 using fts(3) should still work, although they will not take 1252 advantage of the extended types. At the same time, some 1253 third-party software might fail to build after this change 1254 due to unportable assumptions made in its source code about 1255 fts(3) structure members. Such software should be fixed 1256 by its vendor or, in the worst case, in the ports tree. 1257 FreeBSD_version 800015 marks this change for the unlikely 1258 case that a portable fix is impossible. 1259 126020080123: 1261 To upgrade to -current after this date, you must be running 1262 FreeBSD not older than 6.0-RELEASE. Upgrading to -current 1263 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems. 1264 126520071128: 1266 The ADAPTIVE_GIANT kernel option has been retired because its 1267 functionality is the default now. 1268 126920071118: 1270 The AT keyboard emulation of sunkbd(4) has been turned on 1271 by default. In order to make the special symbols of the Sun 1272 keyboards driven by sunkbd(4) work under X these now have 1273 to be configured the same way as Sun USB keyboards driven 1274 by ukbd(4) (which also does AT keyboard emulation), f.e.: 1275 1276 Option "XkbLayout" "us" 1277 Option "XkbRules" "xorg" 1278 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us" 1279 128020071024: 1281 It has been decided that it is desirable to provide ABI 1282 backwards compatibility to the FreeBSD 4/5/6 versions of the 1283 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was 1284 broken with the introduction of PCI domain support (see the 1285 20070930 entry). Unfortunately, this required the ABI of 1286 PCIOCGETCONF to be broken again in order to be able to 1287 provide backwards compatibility to the old version of that 1288 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled 1289 again. As for prominent ports this affects neither pciutils 1290 nor xorg-server this time, the hal port needs to be rebuilt 1291 however. 1292 129320071020: 1294 The misnamed kthread_create() and friends have been renamed 1295 to kproc_create() etc. Many of the callers already 1296 used kproc_start().. 1297 I will return kthread_create() and friends in a while 1298 with implementations that actually create threads, not procs. 1299 Renaming corresponds with version 800002. 1300 130120071010: 1302 RELENG_7 branched. 1303 1304COMMON ITEMS: 1305 1306 General Notes 1307 ------------- 1308 Avoid using make -j when upgrading. While generally safe, there are 1309 sometimes problems using -j to upgrade. If your upgrade fails with 1310 -j, please try again without -j. From time to time in the past there 1311 have been problems using -j with buildworld and/or installworld. This 1312 is especially true when upgrading between "distant" versions (eg one 1313 that cross a major release boundary or several minor releases, or when 1314 several months have passed on the -current branch). 1315 1316 Sometimes, obscure build problems are the result of environment 1317 poisoning. This can happen because the make utility reads its 1318 environment when searching for values for global variables. To run 1319 your build attempts in an "environmental clean room", prefix all make 1320 commands with 'env -i '. See the env(1) manual page for more details. 1321 1322 When upgrading from one major version to another it is generally best 1323 to upgrade to the latest code in the currently installed branch first, 1324 then do an upgrade to the new branch. This is the best-tested upgrade 1325 path, and has the highest probability of being successful. Please try 1326 this approach before reporting problems with a major version upgrade. 1327 1328 ZFS notes 1329 --------- 1330 When upgrading the boot ZFS pool to a new version, always follow 1331 these two steps: 1332 1333 1.) recompile and reinstall the ZFS boot loader and boot block 1334 (this is part of "make buildworld" and "make installworld") 1335 1336 2.) update the ZFS boot block on your boot drive 1337 1338 The following example updates the ZFS boot block on the first 1339 partition (freebsd-boot) of a GPT partitioned drive ad0: 1340 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0" 1341 1342 Non-boot pools do not need these updates. 1343 1344 To build a kernel 1345 ----------------- 1346 If you are updating from a prior version of FreeBSD (even one just 1347 a few days old), you should follow this procedure. It is the most 1348 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld, 1349 1350 make kernel-toolchain 1351 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE 1352 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE 1353 1354 To test a kernel once 1355 --------------------- 1356 If you just want to boot a kernel once (because you are not sure 1357 if it works, or if you want to boot a known bad kernel to provide 1358 debugging information) run 1359 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel 1360 nextboot -k testkernel 1361 1362 To just build a kernel when you know that it won't mess you up 1363 -------------------------------------------------------------- 1364 This assumes you are already running a CURRENT system. Replace 1365 ${arch} with the architecture of your machine (e.g. "i386", 1366 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc). 1367 1368 cd src/sys/${arch}/conf 1369 config KERNEL_NAME_HERE 1370 cd ../compile/KERNEL_NAME_HERE 1371 make depend 1372 make 1373 make install 1374 1375 If this fails, go to the "To build a kernel" section. 1376 1377 To rebuild everything and install it on the current system. 1378 ----------------------------------------------------------- 1379 # Note: sometimes if you are running current you gotta do more than 1380 # is listed here if you are upgrading from a really old current. 1381 1382 <make sure you have good level 0 dumps> 1383 make buildworld 1384 make kernel KERNCONF=YOUR_KERNEL_HERE 1385 [1] 1386 <reboot in single user> [3] 1387 mergemaster -p [5] 1388 make installworld 1389 mergemaster -i [4] 1390 make delete-old [6] 1391 <reboot> 1392 1393 1394 To cross-install current onto a separate partition 1395 -------------------------------------------------- 1396 # In this approach we use a separate partition to hold 1397 # current's root, 'usr', and 'var' directories. A partition 1398 # holding "/", "/usr" and "/var" should be about 2GB in 1399 # size. 1400 1401 <make sure you have good level 0 dumps> 1402 <boot into -stable> 1403 make buildworld 1404 make buildkernel KERNCONF=YOUR_KERNEL_HERE 1405 <maybe newfs current's root partition> 1406 <mount current's root partition on directory ${CURRENT_ROOT}> 1407 make installworld DESTDIR=${CURRENT_ROOT} 1408 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd 1409 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT} 1410 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd 1411 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition> 1412 <reboot into current> 1413 <do a "native" rebuild/install as described in the previous section> 1414 <maybe install compatibility libraries from ports/misc/compat*> 1415 <reboot> 1416 1417 1418 To upgrade in-place from 8.x-stable to current 1419 ---------------------------------------------- 1420 <make sure you have good level 0 dumps> 1421 make buildworld [9] 1422 make kernel KERNCONF=YOUR_KERNEL_HERE [8] 1423 [1] 1424 <reboot in single user> [3] 1425 mergemaster -p [5] 1426 make installworld 1427 mergemaster -i [4] 1428 make delete-old [6] 1429 <reboot> 1430 1431 Make sure that you've read the UPDATING file to understand the 1432 tweaks to various things you need. At this point in the life 1433 cycle of current, things change often and you are on your own 1434 to cope. The defaults can also change, so please read ALL of 1435 the UPDATING entries. 1436 1437 Also, if you are tracking -current, you must be subscribed to 1438 freebsd-current@freebsd.org. Make sure that before you update 1439 your sources that you have read and understood all the recent 1440 messages there. If in doubt, please track -stable which has 1441 much fewer pitfalls. 1442 1443 [1] If you have third party modules, such as vmware, you 1444 should disable them at this point so they don't crash your 1445 system on reboot. 1446 1447 [3] From the bootblocks, boot -s, and then do 1448 fsck -p 1449 mount -u / 1450 mount -a 1451 cd src 1452 adjkerntz -i # if CMOS is wall time 1453 Also, when doing a major release upgrade, it is required that 1454 you boot into single user mode to do the installworld. 1455 1456 [4] Note: This step is non-optional. Failure to do this step 1457 can result in a significant reduction in the functionality of the 1458 system. Attempting to do it by hand is not recommended and those 1459 that pursue this avenue should read this file carefully, as well 1460 as the archives of freebsd-current and freebsd-hackers mailing lists 1461 for potential gotchas. The -U option is also useful to consider. 1462 See mergemaster(8) for more information. 1463 1464 [5] Usually this step is a noop. However, from time to time 1465 you may need to do this if you get unknown user in the following 1466 step. It never hurts to do it all the time. You may need to 1467 install a new mergemaster (cd src/usr.sbin/mergemaster && make 1468 install) after the buildworld before this step if you last updated 1469 from current before 20020224 or from -stable before 20020408. 1470 1471 [6] This only deletes old files and directories. Old libraries 1472 can be deleted by "make delete-old-libs", but you have to make 1473 sure that no program is using those libraries anymore. 1474 1475 [8] In order to have a kernel that can run the 4.x binaries needed to 1476 do an installworld, you must include the COMPAT_FREEBSD4 option in 1477 your kernel. Failure to do so may leave you with a system that is 1478 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is 1479 required to run the 5.x binaries on more recent kernels. And so on 1480 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7. 1481 1482 Make sure that you merge any new devices from GENERIC since the 1483 last time you updated your kernel config file. 1484 1485 [9] When checking out sources, you must include the -P flag to have 1486 cvs prune empty directories. 1487 1488 If CPUTYPE is defined in your /etc/make.conf, make sure to use the 1489 "?=" instead of the "=" assignment operator, so that buildworld can 1490 override the CPUTYPE if it needs to. 1491 1492 MAKEOBJDIRPREFIX must be defined in an environment variable, and 1493 not on the command line, or in /etc/make.conf. buildworld will 1494 warn if it is improperly defined. 1495FORMAT: 1496 1497This file contains a list, in reverse chronological order, of major 1498breakages in tracking -current. It is not guaranteed to be a complete 1499list of such breakages, and only contains entries since October 10, 2007. 1500If you need to see UPDATING entries from before that date, you will need 1501to fetch an UPDATING file from an older FreeBSD release. 1502 1503Copyright information: 1504 1505Copyright 1998-2009 M. Warner Losh. All Rights Reserved. 1506 1507Redistribution, publication, translation and use, with or without 1508modification, in full or in part, in any form or format of this 1509document are permitted without further permission from the author. 1510 1511THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR 1512IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 1513WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 1514DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT, 1515INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 1516(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 1517SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 1518HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 1519STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 1520IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 1521POSSIBILITY OF SUCH DAMAGE. 1522 1523Contact Warner Losh if you have any questions about your use of 1524this document. 1525 1526$FreeBSD$ 1527