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 2520120114: 26 The set_rcvar() function has been removed from /etc/rc.subr. All 27 base and ports rc.d scripts have been updated, so if you have a 28 port installed with a script in /usr/local/etc/rc.d you can either 29 hand-edit the rcvar= line, or reinstall the port. 30 31 An easy way to handle the mass-update of /etc/rc.d: 32 rm /etc/rc.d/* && mergemaster -i 33 3420120109: 35 panic(9) now stops other CPUs in the SMP systems, disables interrupts 36 on the current CPU and prevents other threads from running. 37 This behavior can be reverted using the kern.stop_scheduler_on_panic 38 tunable/sysctl. 39 The new behavior can be incompatible with kern.sync_on_panic. 40 4120111215: 42 The carp(4) facility has been changed significantly. Configuration 43 of the CARP protocol via ifconfig(8) has changed, as well as format 44 of CARP events submitted to devd(8) has changed. See manual pages 45 for more information. The arpbalance feature of carp(4) is currently 46 not supported anymore. 47 48 Size of struct in_aliasreq, struct in6_aliasreq has changed. User 49 utilities using SIOCAIFADDR, SIOCAIFADDR_IN6, e.g. ifconfig(8), 50 need to be recompiled. 51 5220111122: 53 The acpi_wmi(4) status device /dev/wmistat has been renamed to 54 /dev/wmistat0. 55 5620111108: 57 The option VFS_ALLOW_NONMPSAFE option has been added in order to 58 explicitely support non-MPSAFE filesystems. 59 It is on by default for all supported platform at this present 60 time. 61 6220111101: 63 The broken amd(4) driver has been replaced with esp(4) in the amd64, 64 i386 and pc98 GENERIC kernel configuration files. 65 6620110930: 67 sysinstall has been removed 68 6920110923: 70 The stable/9 branch created in subversion. This corresponds to the 71 RELENG_9 branch in CVS. 72 7320110913: 74 This commit modifies vfs_register() so that it uses a hash 75 calculation to set vfc_typenum, which is enabled by default. 76 The first time a system is booted after this change, the 77 vfc_typenum values will change for all file systems. The 78 main effect of this is a change to the NFS server file handles 79 for file systems that use vfc_typenum in their fsid, such as ZFS. 80 It will, however, prevent vfc_typenum from changing when file 81 systems are loaded in a different order for subsequent reboots. 82 To disable this, you can set vfs.typenumhash=0 in /boot/loader.conf 83 until you are ready to remount all NFS clients after a reboot. 84 8520110828: 86 Bump the shared library version numbers for libraries that 87 do not use symbol versioning, have changed the ABI compared 88 to stable/8 and which shared library version was not bumped. 89 Done as part of 9.0-RELEASE cycle. 90 9120110815: 92 During the merge of Capsicum features, the fget(9) KPI was modified. 93 This may require the rebuilding of out-of-tree device drivers -- 94 issues have been reported specifically with the nVidia device driver. 95 __FreeBSD_version is bumped to 900041. 96 97 Also, there is a period between 20110811 and 20110814 where the 98 special devices /dev/{stdin,stdout,stderr} did not work correctly. 99 Building world from a kernel during that window may not work. 100 10120110628: 102 The packet filter (pf) code has been updated to OpenBSD 4.5. 103 You need to update userland tools to be in sync with kernel. 104 This update breaks backward compatibility with earlier pfsync(4) 105 versions. Care must be taken when updating redundant firewall setups. 106 10720110608: 108 The following sysctls and tunables are retired on x86 platforms: 109 machdep.hlt_cpus 110 machdep.hlt_logical_cpus 111 The following sysctl is retired: 112 machdep.hyperthreading_allowed 113 The sysctls were supposed to provide a way to dynamically offline and 114 online selected CPUs on x86 platforms, but the implementation has not 115 been reliable especially with SCHED_ULE scheduler. 116 machdep.hyperthreading_allowed tunable is still available to ignore 117 hyperthreading CPUs at OS level. 118 Individual CPUs can be disabled using hint.lapic.X.disabled tunable, 119 where X is an APIC ID of a CPU. Be advised, though, that disabling 120 CPUs in non-uniform fashion will result in non-uniform topology and 121 may lead to sub-optimal system performance with SCHED_ULE, which is 122 a default scheduler. 123 12420110607: 125 cpumask_t type is retired and cpuset_t is used in order to describe 126 a mask of CPUs. 127 12820110531: 129 Changes to ifconfig(8) for dynamic address family detection mandate 130 that you are running a kernel of 20110525 or later. Make sure to 131 follow the update procedure to boot a new kernel before installing 132 world. 133 13420110513: 135 Support for sun4v architecture is officially dropped 136 13720110503: 138 Several KPI breaking changes have been committed to the mii(4) layer, 139 the PHY drivers and consequently some Ethernet drivers using mii(4). 140 This means that miibus.ko and the modules of the affected Ethernet 141 drivers need to be recompiled. 142 143 Note to kernel developers: Given that the OUI bit reversion problem 144 was fixed as part of these changes all mii(4) commits related to OUIs, 145 i.e. to sys/dev/mii/miidevs, PHY driver probing and vendor specific 146 handling, no longer can be merged verbatim to stable/8 and previous 147 branches. 148 14920110430: 150 Users of the Atheros AR71xx SoC code now need to add 'device ar71xx_pci' 151 into their kernel configurations along with 'device pci'. 152 15320110427: 154 The default NFS client is now the new NFS client, so fstype "newnfs" 155 is now "nfs" and the regular/old NFS client is now fstype "oldnfs". 156 Although mounts via fstype "nfs" will usually work without userland 157 changes, it is recommended that the mount(8) and mount_nfs(8) 158 commands be rebuilt from sources and that a link to mount_nfs called 159 mount_oldnfs be created. The new client is compiled into the 160 kernel with "options NFSCL" and this is needed for diskless root 161 file systems. The GENERIC kernel configs have been changed to use 162 NFSCL and NFSD (the new server) instead of NFSCLIENT and NFSSERVER. 163 To use the regular/old client, you can "mount -t oldnfs ...". For 164 a diskless root file system, you must also include a line like: 165 166 vfs.root.mountfrom="oldnfs:" 167 168 in the boot/loader.conf on the root fs on the NFS server to make 169 a diskless root fs use the old client. 170 17120110424: 172 The GENERIC kernels for all architectures now default to the new 173 CAM-based ATA stack. It means that all legacy ATA drivers were 174 removed and replaced by respective CAM drivers. If you are using 175 ATA device names in /etc/fstab or other places, make sure to update 176 them respectively (adX -> adaY, acdX -> cdY, afdX -> daY, astX -> saY, 177 where 'Y's are the sequential numbers starting from zero for each type 178 in order of detection, unless configured otherwise with tunables, 179 see cam(4)). There will be symbolic links created in /dev/ to map 180 old adX devices to the respective adaY. They should provide basic 181 compatibility for file systems mounting in most cases, but they do 182 not support old user-level APIs and do not have respective providers 183 in GEOM. Consider using updated management tools with new device names. 184 185 It is possible to load devices ahci, ata, siis and mvs as modules, 186 but option ATA_CAM should remain in kernel configuration to make ata 187 module work as CAM driver supporting legacy ATA controllers. Device ata 188 still can be used in modular fashion (atacore + ...). Modules atadisk 189 and atapi* are not used and won't affect operation in ATA_CAM mode. 190 Note that to use CAM-based ATA kernel should include CAM devices 191 scbus, pass, da (or explicitly ada), cd and optionally others. All of 192 them are parts of the cam module. 193 194 ataraid(4) functionality is now supported by the RAID GEOM class. 195 To use it you can load geom_raid kernel module and use graid(8) tool 196 for management. Instead of /dev/arX device names, use /dev/raid/rX. 197 198 No kernel config options or code have been removed, so if a problem 199 arises, please report it and optionally revert to the old ATA stack. 200 In order to do it you can remove from the kernel config: 201 options ATA_CAM 202 device ahci 203 device mvs 204 device siis 205 , and instead add back: 206 device atadisk # ATA disk drives 207 device ataraid # ATA RAID drives 208 device atapicd # ATAPI CDROM drives 209 device atapifd # ATAPI floppy drives 210 device atapist # ATAPI tape drives 211 21220110423: 213 The default NFS server has been changed to the new server, which 214 was referred to as the experimental server. If you need to switch 215 back to the old NFS server, you must now put the "-o" option on 216 both the mountd and nfsd commands. This can be done using the 217 mountd_flags and nfs_server_flags rc.conf variables until an 218 update to the rc scripts is committed, which is coming soon. 219 22020110418: 221 The GNU Objective-C runtime library (libobjc), and other Objective-C 222 related components have been removed from the base system. If you 223 require an Objective-C library, please use one of the available ports. 224 22520110331: 226 ath(4) has been split into bus- and device- modules. if_ath contains 227 the HAL, the TX rate control and the network device code. if_ath_pci 228 contains the PCI bus glue. For Atheros MIPS embedded systems, if_ath_ahb 229 contains the AHB glue. Users need to load both if_ath_pci and if_ath 230 in order to use ath on everything else. 231 232 TO REPEAT: if_ath_ahb is not needed for normal users. Normal users only 233 need to load if_ath and if_ath_pci for ath(4) operation. 234 23520110314: 236 As part of the replacement of sysinstall, the process of building 237 release media has changed significantly. For details, please re-read 238 release(7), which has been updated to reflect the new build process. 239 24020110218: 241 GNU binutils 2.17.50 (as of 2007-07-03) has been merged to -HEAD. This 242 is the last available version under GPLv2. It brings a number of new 243 features, such as support for newer x86 CPU's (with SSE-3, SSSE-3, SSE 244 4.1 and SSE 4.2), better support for powerpc64, a number of new 245 directives, and lots of other small improvements. See the ChangeLog 246 file in contrib/binutils for the full details. 247 24820110218: 249 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868 250 compliant, and will now use half of hash for authentication. 251 This will break interoperability with all stacks (including all 252 actual FreeBSD versions) who implement 253 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for 254 authentication). 255 The only workaround with such peers is to use another HMAC 256 algorithm for IPsec ("phase 2") authentication. 257 25820110207: 259 Remove the uio_yield prototype and symbol. This function has 260 been misnamed since it was introduced and should not be 261 globally exposed with this name. The equivalent functionality 262 is now available using kern_yield(curthread->td_user_pri). 263 The function remains undocumented. 264 26520110112: 266 A SYSCTL_[ADD_]UQUAD was added for unsigned uint64_t pointers, 267 symmetric with the existing SYSCTL_[ADD_]QUAD. Type checking 268 for scalar sysctls is defined but disabled. Code that needs 269 UQUAD to pass the type checking that must compile on older 270 systems where the define is not present can check against 271 __FreeBSD_version >= 900030. 272 273 The system dialog(1) has been replaced with a new version previously 274 in ports as devel/cdialog. dialog(1) is mostly command-line compatible 275 with the previous version, but the libdialog associated with it has 276 a largely incompatible API. As such, the original version of libdialog 277 will be kept temporarily as libodialog, until its base system consumers 278 are replaced or updated. Bump __FreeBSD_version to 900030. 279 28020110103: 281 If you are trying to run make universe on a -stable system, and you get 282 the following warning: 283 "Makefile", line 356: "Target architecture for i386/conf/GENERIC 284 unknown. config(8) likely too old." 285 or something similar to it, then you must upgrade your -stable system 286 to 8.2-Release or newer (really, any time after r210146 7/15/2010 in 287 stable/8) or build the config from the latest stable/8 branch and 288 install it on your system. 289 290 Prior to this date, building a current universe on 8-stable system from 291 between 7/15/2010 and 1/2/2011 would result in a weird shell parsing 292 error in the first kernel build phase. A new config on those old 293 systems will fix that problem for older versions of -current. 294 29520101228: 296 The TCP stack has been modified to allow Khelp modules to interact with 297 it via helper hook points and store per-connection data in the TCP 298 control block. Bump __FreeBSD_version to 900029. User space tools that 299 rely on the size of struct tcpcb in tcp_var.h (e.g. sockstat) need to 300 be recompiled. 301 30220101114: 303 Generic IEEE 802.3 annex 31B full duplex flow control support has been 304 added to mii(4) and bge(4), bce(4), msk(4), nfe(4) and stge(4) along 305 with brgphy(4), e1000phy(4) as well as ip1000phy() have been converted 306 to take advantage of it instead of using custom implementations. This 307 means that these drivers now no longer unconditionally advertise 308 support for flow control but only do so if flow control is a selected 309 media option. This was implemented in the generic support that way in 310 order to allow flow control to be switched on and off via ifconfig(8) 311 with the PHY specific default to typically off in order to protect 312 from unwanted effects. Consequently, if you used flow control with 313 one of the above mentioned drivers you now need to explicitly enable 314 it, for example via: 315 ifconfig bge0 media auto mediaopt flowcontrol 316 317 Along with the above mentioned changes generic support for setting 318 1000baseT master mode also has been added and brgphy(4), ciphy(4), 319 e1000phy(4) as well as ip1000phy(4) have been converted to take 320 advantage of it. This means that these drivers now no longer take the 321 link0 parameter for selecting master mode but the master media option 322 has to be used instead, for example like in the following: 323 ifconfig bge0 media 1000baseT mediaopt full-duplex,master 324 325 Selection of master mode now is also available with all other PHY 326 drivers supporting 1000baseT. 327 32820101111: 329 The TCP stack has received a significant update to add support for 330 modularised congestion control and generally improve the clarity of 331 congestion control decisions. Bump __FreeBSD_version to 900025. User 332 space tools that rely on the size of struct tcpcb in tcp_var.h (e.g. 333 sockstat) need to be recompiled. 334 33520101002: 336 The man(1) utility has been replaced by a new version that no longer 337 uses /etc/manpath.config. Please consult man.conf(5) for how to 338 migrate local entries to the new format. 339 34020100928: 341 The copyright strings printed by login(1) and sshd(8) at the time of a 342 new connection have been removed to follow other operating systems and 343 upstream sshd. 344 34520100915: 346 A workaround for a fixed ld bug has been removed in kernel code, 347 so make sure that your system ld is built from sources after 348 revision 210245 from 2010-07-19 (r211583 if building head kernel 349 on stable/8, r211584 for stable/7; both from 2010-08-21). 350 A symptom of incorrect ld version is different addresses for 351 set_pcpu section and __start_set_pcpu symbol in kernel and/or modules. 352 35320100913: 354 The $ipv6_prefer variable in rc.conf(5) has been split into 355 $ip6addrctl_policy and $ipv6_activate_all_interfaces. 356 357 The $ip6addrctl_policy is a variable to choose a pre-defined 358 address selection policy set by ip6addrctl(8). A value 359 "ipv4_prefer", "ipv6_prefer" or "AUTO" can be specified. The 360 default is "AUTO". 361 362 The $ipv6_activate_all_interfaces specifies whether IFDISABLED 363 flag (see an entry of 20090926) is set on an interface with no 364 corresponding $ifconfig_IF_ipv6 line. The default is "NO" for 365 security reason. If you want IPv6 link-local address on all 366 interfaces by default, set this to "YES". 367 368 The old ipv6_prefer="YES" is equivalent to 369 ipv6_activate_all_interfaces="YES" and 370 ip6addrctl_policy="ipv6_prefer". 371 37220100913: 373 DTrace has grown support for userland tracing. Due to this, DTrace is 374 now i386 and amd64 only. 375 dtruss(1) is now installed by default on those systems and a new 376 kernel module is needed for userland tracing: fasttrap. 377 No changes to your kernel config file are necessary to enable 378 userland tracing, but you might consider adding 'STRIP=' and 379 'CFLAGS+=-fno-omit-frame-pointer' to your make.conf if you want 380 to have informative userland stack traces in DTrace (ustack). 381 38220100725: 383 The acpi_aiboost(4) driver has been removed in favor of the new 384 aibs(4) driver. You should update your kernel configuration file. 385 38620100722: 387 BSD grep has been imported to the base system and it is built by 388 default. It is completely BSD licensed, highly GNU-compatible, uses 389 less memory than its GNU counterpart and has a small codebase. 390 However, it is slower than its GNU counterpart, which is mostly 391 noticeable for larger searches, for smaller ones it is measurable 392 but not significant. The reason is complex, the most important factor 393 is that we lack a modern and efficient regex library and GNU 394 overcomes this by optimizing the searches internally. Future work 395 on improving the regex performance is planned, for the meantime, 396 users that need better performance, can build GNU grep instead by 397 setting the WITH_GNU_GREP knob. 398 39920100713: 400 Due to the import of powerpc64 support, all existing powerpc kernel 401 configuration files must be updated with a machine directive like this: 402 machine powerpc powerpc 403 404 In addition, an updated config(8) is required to build powerpc kernels 405 after this change. 406 40720100713: 408 A new version of ZFS (version 15) has been merged to -HEAD. 409 This version uses a python library for the following subcommands: 410 zfs allow, zfs unallow, zfs groupspace, zfs userspace. 411 For full functionality of these commands the following port must 412 be installed: sysutils/py-zfs 413 41420100429: 415 'vm_page's are now hashed by physical address to an array of mutexes. 416 Currently this is only used to serialize access to hold_count. Over 417 time the page queue mutex will be peeled away. This changes the size 418 of pmap on every architecture. And requires all callers of vm_page_hold 419 and vm_page_unhold to be updated. 420 42120100402: 422 WITH_CTF can now be specified in src.conf (not recommended, there 423 are some problems with static executables), make.conf (would also 424 affect ports which do not use GNU make and do not override the 425 compile targets) or in the kernel config (via "makeoptions 426 WITH_CTF=yes"). 427 When WITH_CTF was specified there before this was silently ignored, 428 so make sure that WITH_CTF is not used in places which could lead 429 to unwanted behavior. 430 43120100311: 432 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32 433 to allow 32-bit compatibility on non-x86 platforms. All kernel 434 configurations on amd64 and ia64 platforms using these options must 435 be modified accordingly. 436 43720100113: 438 The utmp user accounting database has been replaced with utmpx, 439 the user accounting interface standardized by POSIX. 440 Unfortunately the semantics of utmp and utmpx don't match, 441 making it practically impossible to support both interfaces. 442 The user accounting database is used by tools like finger(1), 443 last(1), talk(1), w(1) and ac(8). 444 445 All applications in the base system use utmpx. This means only 446 local binaries (e.g. from the ports tree) may still use these 447 utmp database files. These applications must be rebuilt to make 448 use of utmpx. 449 450 After the system has been upgraded, it is safe to remove the old 451 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*), 452 assuming their contents is of no importance anymore. Old wtmp 453 databases can only be used by last(1) and ac(8) after they have 454 been converted to the new format using wtmpcvt(1). 455 45620100108: 457 Introduce the kernel thread "deadlock resolver" (which can be enabled 458 via the DEADLKRES option, see NOTES for more details) and the 459 sleepq_type() function for sleepqueues. 460 46120091202: 462 The rc.firewall and rc.firewall6 were unified, and 463 rc.firewall6 and rc.d/ip6fw were removed. 464 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc 465 variables are obsoleted. Instead, the following new rc 466 variables are added to rc.d/ipfw: 467 468 firewall_client_net_ipv6, firewall_simple_iif_ipv6, 469 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6, 470 firewall_simple_onet_ipv6, firewall_trusted_ipv6 471 472 The meanings correspond to the relevant IPv4 variables. 473 47420091125: 475 8.0-RELEASE. 476 47720091113: 478 The default terminal emulation for syscons(4) has been changed 479 from cons25 to xterm on all platforms except pc98. This means 480 that the /etc/ttys file needs to be updated to ensure correct 481 operation of applications on the console. 482 483 The terminal emulation style can be toggled per window by using 484 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration 485 options can be used to change the compile-time default back to 486 cons25. 487 488 To prevent graphical artifacts, make sure the TERM environment 489 variable is set to match the terminal emulation that is being 490 performed by syscons(4). 491 49220091109: 493 The layout of the structure ieee80211req_scan_result has changed. 494 Applications that require wireless scan results (e.g. ifconfig(8)) 495 from net80211 need to be recompiled. 496 497 Applications such as wpa_supplicant(8) may require a full world 498 build without using NO_CLEAN in order to get synchronized with the 499 new structure. 500 50120091025: 502 The iwn(4) driver has been updated to support the 5000 and 5150 series. 503 There's one kernel module for each firmware. Adding "device iwnfw" 504 to the kernel configuration file means including all three firmware 505 images inside the kernel. If you want to include just the one for 506 your wireless card, use the devices iwn4965fw, iwn5000fw or 507 iwn5150fw. 508 50920090926: 510 The rc.d/network_ipv6, IPv6 configuration script has been integrated 511 into rc.d/netif. The changes are the following: 512 513 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF 514 for IPv4. For aliases, $ifconfig_IF_aliasN should be used. 515 Note that both variables need the "inet6" keyword at the head. 516 517 Do not set $ipv6_network_interfaces manually if you do not 518 understand what you are doing. It is not needed in most cases. 519 520 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but 521 they are obsolete. 522 523 2. $ipv6_enable is obsolete. Use $ipv6_prefer and 524 "inet6 accept_rtadv" keyword in ifconfig(8) instead. 525 526 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and 527 all configured interfaces have "inet6 accept_rtadv" in the 528 $ifconfig_IF_ipv6. These are for backward compatibility. 529 530 3. A new variable $ipv6_prefer has been added. If NO, IPv6 531 functionality of interfaces with no corresponding 532 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag, 533 and the default address selection policy of ip6addrctl(8) 534 is the IPv4-preferred one (see rc.d/ip6addrctl for more details). 535 Note that if you want to configure IPv6 functionality on the 536 disabled interfaces after boot, first you need to clear the flag by 537 using ifconfig(8) like: 538 539 ifconfig em0 inet6 -ifdisabled 540 541 If YES, the default address selection policy is set as 542 IPv6-preferred. 543 544 The default value of $ipv6_prefer is NO. 545 546 4. If your system need to receive Router Advertisement messages, 547 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8) 548 scripts automatically invoke rtsol(8) when the interface becomes 549 UP. The Router Advertisement messages are used for SLAAC 550 (State-Less Address AutoConfiguration). 551 55220090922: 553 802.11s D3.03 support was committed. This is incompatible with the 554 previous code, which was based on D3.0. 555 55620090912: 557 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value 558 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to 559 control whether accepting Router Advertisement messages or not. 560 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and 561 a sysctl variable net.inet6.ip6.auto_linklocal is its default value. 562 The ifconfig(8) utility now supports these flags. 563 56420090910: 565 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for 566 mount(8) and -a option for df(1) to see them. 567 56820090825: 569 The old tunable hw.bus.devctl_disable has been superseded by 570 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be 571 replaced by hw.bus.devctl_queue=0. The default for this new tunable 572 is 1000. 573 57420090813: 575 Remove the option STOP_NMI. The default action is now to use NMI only 576 for KDB via the newly introduced function stop_cpus_hard() and 577 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64. 578 57920090803: 580 The stable/8 branch created in subversion. This corresponds to the 581 RELENG_8 branch in CVS. 582 58320090719: 584 Bump the shared library version numbers for all libraries that do not 585 use symbol versioning as part of the 8.0-RELEASE cycle. Bump 586 __FreeBSD_version to 800105. 587 58820090714: 589 Due to changes in the implementation of virtual network stack support, 590 all network-related kernel modules must be recompiled. As this change 591 breaks the ABI, bump __FreeBSD_version to 800104. 592 59320090713: 594 The TOE interface to the TCP syncache has been modified to remove 595 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. 596 The cxgb driver is the only TOE consumer affected by this change, and 597 needs to be recompiled along with the kernel. As this change breaks 598 the ABI, bump __FreeBSD_version to 800103. 599 60020090712: 601 Padding has been added to struct tcpcb, sackhint and tcpstat in 602 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst 603 maintaining the ABI. However, this change breaks the ABI, so bump 604 __FreeBSD_version to 800102. User space tools that rely on the size of 605 any of these structs (e.g. sockstat) need to be recompiled. 606 60720090630: 608 The NFS_LEGACYRPC option has been removed along with the old kernel 609 RPC implementation that this option selected. Kernel configurations 610 may need to be adjusted. 611 61220090629: 613 The network interface device nodes at /dev/net/<interface> have been 614 removed. All ioctl operations can be performed the normal way using 615 routing sockets. The kqueue functionality can generally be replaced 616 with routing sockets. 617 61820090628: 619 The documentation from the FreeBSD Documentation Project (Handbook, 620 FAQ, etc.) is now installed via packages by sysinstall(8) and under 621 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc. 622 62320090624: 624 The ABI of various structures related to the SYSV IPC API have been 625 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel 626 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to 627 800100. 628 62920090622: 630 Layout of struct vnet has changed as routing related variables were 631 moved to their own Vimage module. Modules need to be recompiled. Bump 632 __FreeBSD_version to 800099. 633 63420090619: 635 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024 636 respectively. As long as no more than 16 groups per process are used, 637 no changes should be visible. When more than 16 groups are used, old 638 binaries may fail if they call getgroups() or getgrouplist() with 639 statically sized storage. Recompiling will work around this, but 640 applications should be modified to use dynamically allocated storage 641 for group arrays as POSIX.1-2008 does not cap an implementation's 642 number of supported groups at NGROUPS_MAX+1 as previous versions did. 643 644 NFS and portalfs mounts may also be affected as the list of groups is 645 truncated to 16. Users of NFS who use more than 16 groups, should 646 take care that negative group permissions are not used on the exported 647 file systems as they will not be reliable unless a GSSAPI based 648 authentication method is used. 649 65020090616: 651 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This 652 option compiles in the support for adaptive spinning for lockmgrs 653 which want to enable it. The lockinit() function now accepts the flag 654 LK_ADAPTIVE in order to make the lock object subject to adaptive 655 spinning when both held in write and read mode. 656 65720090613: 658 The layout of the structure returned by IEEE80211_IOC_STA_INFO has 659 changed. User applications that use this ioctl need to be rebuilt. 660 66120090611: 662 The layout of struct thread has changed. Kernel and modules need to 663 be rebuilt. 664 66520090608: 666 The layout of structs ifnet, domain, protosw and vnet_net has changed. 667 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097. 668 66920090602: 670 window(1) has been removed from the base system. It can now be 671 installed from ports. The port is called misc/window. 672 67320090601: 674 The way we are storing and accessing `routing table' entries has 675 changed. Programs reading the FIB, like netstat, need to be 676 re-compiled. 677 67820090601: 679 A new netisr implementation has been added for FreeBSD 8. Network 680 file system modules, such as igmp, ipdivert, and others, should be 681 rebuilt. 682 Bump __FreeBSD_version to 800096. 683 68420090530: 685 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no 686 more valid. 687 68820090530: 689 Add VOP_ACCESSX(9). File system modules need to be rebuilt. 690 Bump __FreeBSD_version to 800094. 691 69220090529: 693 Add mnt_xflag field to 'struct mount'. File system modules need to be 694 rebuilt. 695 Bump __FreeBSD_version to 800093. 696 69720090528: 698 The compiling option ADAPTIVE_SX has been retired while it has been 699 introduced the option NO_ADAPTIVE_SX which handles the reversed logic. 700 The KPI for sx_init_flags() changes as accepting flags: 701 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has 702 been introduced in order to handle the reversed logic. 703 Bump __FreeBSD_version to 800092. 704 70520090527: 706 Add support for hierarchical jails. Remove global securelevel. 707 Bump __FreeBSD_version to 800091. 708 70920090523: 710 The layout of struct vnet_net has changed, therefore modules 711 need to be rebuilt. 712 Bump __FreeBSD_version to 800090. 713 71420090523: 715 The newly imported zic(8) produces a new format in the output. Please 716 run tzsetup(8) to install the newly created data to /etc/localtime. 717 71820090520: 719 The sysctl tree for the usb stack has renamed from hw.usb2.* to 720 hw.usb.* and is now consistent again with previous releases. 721 72220090520: 723 802.11 monitor mode support was revised and driver api's were changed. 724 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead 725 of DLT_IEEE802_11. No user-visible data structures were changed but 726 applications that use DLT_IEEE802_11 may require changes. 727 Bump __FreeBSD_version to 800088. 728 72920090430: 730 The layout of the following structs has changed: sysctl_oid, 731 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet, 732 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or 733 panics may be experienced. World rebuild is required for 734 correctly checking networking state from userland. 735 Bump __FreeBSD_version to 800085. 736 73720090429: 738 MLDv2 and Source-Specific Multicast (SSM) have been merged 739 to the IPv6 stack. VIMAGE hooks are in but not yet used. 740 The implementation of SSM within FreeBSD's IPv6 stack closely 741 follows the IPv4 implementation. 742 743 For kernel developers: 744 745 * The most important changes are that the ip6_output() and 746 ip6_input() paths no longer take the IN6_MULTI_LOCK, 747 and this lock has been downgraded to a non-recursive mutex. 748 749 * As with the changes to the IPv4 stack to support SSM, filtering 750 of inbound multicast traffic must now be performed by transport 751 protocols within the IPv6 stack. This does not apply to TCP and 752 SCTP, however, it does apply to UDP in IPv6 and raw IPv6. 753 754 * The KPIs used by IPv6 multicast are similar to those used by 755 the IPv4 stack, with the following differences: 756 * im6o_mc_filter() is analogous to imo_multicast_filter(). 757 * The legacy KAME entry points in6_joingroup and in6_leavegroup() 758 are shimmed to in6_mc_join() and in6_mc_leave() respectively. 759 * IN6_LOOKUP_MULTI() has been deprecated and removed. 760 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs 761 for MLDv1 have an additional 'timer' argument which is used to 762 jitter the initial membership report for the solicited-node 763 multicast membership on-link. 764 * This is not strictly needed for MLDv2, which already jitters 765 its report transmissions. However, the 'timer' argument is 766 preserved in case MLDv1 is active on the interface. 767 768 * The KAME linked-list based IPv6 membership implementation has 769 been refactored to use a vector similar to that used by the IPv4 770 stack. 771 Code which maintains a list of its own multicast memberships 772 internally, e.g. carp, has been updated to reflect the new 773 semantics. 774 775 * There is a known Lock Order Reversal (LOR) due to in6_setscope() 776 acquiring the IF_AFDATA_LOCK and being called within ip6_output(). 777 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an 778 implementation constraint which needs to be addressed in HEAD. 779 780 For application developers: 781 782 * The changes are broadly similar to those made for the IPv4 783 stack. 784 785 * The use of IPv4 and IPv6 multicast socket options on the same 786 socket, using mapped addresses, HAS NOT been tested or supported. 787 788 * There are a number of issues with the implementation of various 789 IPv6 multicast APIs which need to be resolved in the API surface 790 before the implementation is fully compatible with KAME userland 791 use, and these are mostly to do with interface index treatment. 792 793 * The literature available discusses the use of either the delta / ASM 794 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API 795 using setsourcefilter(3)/getsourcefilter(3). For more information 796 please refer to RFC 3768, 'Socket Interface Extensions for 797 Multicast Source Filters'. 798 799 * Applications which use the published RFC 3678 APIs should be fine. 800 801 For systems administrators: 802 803 * The mtest(8) utility has been refactored to support IPv6, in 804 addition to IPv4. Interface addresses are no longer accepted 805 as arguments, their names must be used instead. The utility 806 will map the interface name to its first IPv4 address as 807 returned by getifaddrs(3). 808 809 * The ifmcstat(8) utility has also been updated to print the MLDv2 810 endpoint state and source filter lists via sysctl(3). 811 812 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable 813 loopback of IPv6 multicast datagrams by default; it defaults to 1 814 to preserve the existing behaviour. Disabling multicast loopback is 815 recommended for optimal system performance. 816 817 * The IPv6 MROUTING code has been changed to examine this sysctl 818 instead of attempting to perform a group lookup before looping 819 back forwarded datagrams. 820 821 Bump __FreeBSD_version to 800084. 822 82320090422: 824 Implement low-level Bluetooth HCI API. 825 Bump __FreeBSD_version to 800083. 826 82720090419: 828 The layout of struct malloc_type, used by modules to register new 829 memory allocation types, has changed. Most modules will need to 830 be rebuilt or panics may be experienced. 831 Bump __FreeBSD_version to 800081. 832 83320090415: 834 Anticipate overflowing inp_flags - add inp_flags2. 835 This changes most offsets in inpcb, so checking v4 connection 836 state will require a world rebuild. 837 Bump __FreeBSD_version to 800080. 838 83920090415: 840 Add an llentry to struct route and struct route_in6. Modules 841 embedding a struct route will need to be recompiled. 842 Bump __FreeBSD_version to 800079. 843 84420090414: 845 The size of rt_metrics_lite and by extension rtentry has changed. 846 Networking administration apps will need to be recompiled. 847 The route command now supports show as an alias for get, weighting 848 of routes, sticky and nostick flags to alter the behavior of stateful 849 load balancing. 850 Bump __FreeBSD_version to 800078. 851 85220090408: 853 Do not use Giant for kbdmux(4) locking. This is wrong and 854 apparently causing more problems than it solves. This will 855 re-open the issue where interrupt handlers may race with 856 kbdmux(4) in polling mode. Typical symptoms include (but 857 not limited to) duplicated and/or missing characters when 858 low level console functions (such as gets) are used while 859 interrupts are enabled (for example geli password prompt, 860 mountroot prompt etc.). Disabling kbdmux(4) may help. 861 86220090407: 863 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed; 864 kernel modules referencing any of the above need to be recompiled. 865 Bump __FreeBSD_version to 800075. 866 86720090320: 868 GEOM_PART has become the default partition slicer for storage devices, 869 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It 870 introduces some changes: 871 872 MSDOS/EBR: the devices created from MSDOS extended partition entries 873 (EBR) can be named differently than with GEOM_MBR and are now symlinks 874 to devices with offset-based names. fstabs may need to be modified. 875 876 BSD: the "geometry does not match label" warning is harmless in most 877 cases but it points to problems in file system misalignment with 878 disk geometry. The "c" partition is now implicit, covers the whole 879 top-level drive and cannot be (mis)used by users. 880 881 General: Kernel dumps are now not allowed to be written to devices 882 whose partition types indicate they are meant to be used for file 883 systems (or, in case of MSDOS partitions, as something else than 884 the "386BSD" type). 885 886 Most of these changes date approximately from 200812. 887 88820090319: 889 The uscanner(4) driver has been removed from the kernel. This follows 890 Linux removing theirs in 2.6 and making libusb the default interface 891 (supported by sane). 892 89320090319: 894 The multicast forwarding code has been cleaned up. netstat(1) 895 only relies on KVM now for printing bandwidth upcall meters. 896 The IPv4 and IPv6 modules are split into ip_mroute_mod and 897 ip6_mroute_mod respectively. The config(5) options for statically 898 compiling this code remain the same, i.e. 'options MROUTING'. 899 90020090315: 901 Support for the IFF_NEEDSGIANT network interface flag has been 902 removed, which means that non-MPSAFE network device drivers are no 903 longer supported. In particular, if_ar, if_sr, and network device 904 drivers from the old (legacy) USB stack can no longer be built or 905 used. 906 90720090313: 908 POSIX.1 Native Language Support (NLS) has been enabled in libc and 909 a bunch of new language catalog files have also been added. 910 This means that some common libc messages are now localized and 911 they depend on the LC_MESSAGES environmental variable. 912 91320090313: 914 The k8temp(4) driver has been renamed to amdtemp(4) since 915 support for Family 10 and Family 11 CPU families was added. 916 91720090309: 918 IGMPv3 and Source-Specific Multicast (SSM) have been merged 919 to the IPv4 stack. VIMAGE hooks are in but not yet used. 920 921 For kernel developers, the most important changes are that the 922 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(), 923 and this lock has been downgraded to a non-recursive mutex. 924 925 Transport protocols (UDP, Raw IP) are now responsible for filtering 926 inbound multicast traffic according to group membership and source 927 filters. The imo_multicast_filter() KPI exists for this purpose. 928 Transports which do not use multicast (SCTP, TCP) already reject 929 multicast by default. Forwarding and receive performance may improve 930 as a mutex acquisition is no longer needed in the ip_input() 931 low-level input path. in_addmulti() and in_delmulti() are shimmed 932 to new KPIs which exist to support SSM in-kernel. 933 934 For application developers, it is recommended that loopback of 935 multicast datagrams be disabled for best performance, as this 936 will still cause the lock to be taken for each looped-back 937 datagram transmission. The net.inet.ip.mcast.loop sysctl may 938 be tuned to 0 to disable loopback by default; it defaults to 1 939 to preserve the existing behaviour. 940 941 For systems administrators, to obtain best performance with 942 multicast reception and multiple groups, it is always recommended 943 that a card with a suitably precise hash filter is used. Hash 944 collisions will still result in the lock being taken within the 945 transport protocol input path to check group membership. 946 947 If deploying FreeBSD in an environment with IGMP snooping switches, 948 it is recommended that the net.inet.igmp.sendlocal sysctl remain 949 enabled; this forces 224.0.0.0/24 group membership to be announced 950 via IGMP. 951 952 The size of 'struct igmpstat' has changed; netstat needs to be 953 recompiled to reflect this. 954 Bump __FreeBSD_version to 800070. 955 95620090309: 957 libusb20.so.1 is now installed as libusb.so.1 and the ports system 958 updated to use it. This requires a buildworld/installworld in order to 959 update the library and dependencies (usbconfig, etc). Its advisable to 960 rebuild all ports which uses libusb. More specific directions are given 961 in the ports collection UPDATING file. Any /etc/libmap.conf entries for 962 libusb are no longer required and can be removed. 963 96420090302: 965 A workaround is committed to allow the creation of System V shared 966 memory segment of size > 2 GB on the 64-bit architectures. 967 Due to a limitation of the existing ABI, the shm_segsz member 968 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is 969 wrong for large segments. Note that limits must be explicitly 970 raised to allow such segments to be created. 971 97220090301: 973 The layout of struct ifnet has changed, requiring a rebuild of all 974 network device driver modules. 975 97620090227: 977 The /dev handling for the new USB stack has changed, a 978 buildworld/installworld is required for libusb20. 979 98020090223: 981 The new USB2 stack has now been permanently moved in and all kernel and 982 module names reverted to their previous values (eg, usb, ehci, ohci, 983 ums, ...). The old usb stack can be compiled in by prefixing the name 984 with the letter 'o', the old usb modules have been removed. 985 Updating entry 20090216 for xorg and 20090215 for libmap may still 986 apply. 987 98820090217: 989 The rc.conf(5) option if_up_delay has been renamed to 990 defaultroute_delay to better reflect its purpose. If you have 991 customized this setting in /etc/rc.conf you need to update it to 992 use the new name. 993 99420090216: 995 xorg 7.4 wants to configure its input devices via hald which does not 996 yet work with USB2. If the keyboard/mouse does not work in xorg then 997 add 998 Option "AllowEmptyInput" "off" 999 to your ServerLayout section. This will cause X to use the configured 1000 kbd and mouse sections from your xorg.conf. 1001 100220090215: 1003 The GENERIC kernels for all architectures now default to the new USB2 1004 stack. No kernel config options or code have been removed so if a 1005 problem arises please report it and optionally revert to the old USB 1006 stack. If you are loading USB kernel modules or have a custom kernel 1007 that includes GENERIC then ensure that usb names are also changed over, 1008 eg uftdi -> usb2_serial_ftdi. 1009 1010 Older programs linked against the ports libusb 0.1 need to be 1011 redirected to the new stack's libusb20. /etc/libmap.conf can 1012 be used for this: 1013 # Map old usb library to new one for usb2 stack 1014 libusb-0.1.so.8 libusb20.so.1 1015 101620090209: 1017 All USB ethernet devices now attach as interfaces under the name ueN 1018 (eg. ue0). This is to provide a predictable name as vendors often 1019 change usb chipsets in a product without notice. 1020 102120090203: 1022 The ichsmb(4) driver has been changed to require SMBus slave 1023 addresses be left-justified (xxxxxxx0b) rather than right-justified. 1024 All of the other SMBus controller drivers require left-justified 1025 slave addresses, so this change makes all the drivers provide the 1026 same interface. 1027 102820090201: 1029 INET6 statistics (struct ip6stat) was updated. 1030 netstat(1) needs to be recompiled. 1031 103220090119: 1033 NTFS has been removed from GENERIC kernel on amd64 to match 1034 GENERIC on i386. Should not cause any issues since mount_ntfs(8) 1035 will load ntfs.ko module automatically when NTFS support is 1036 actually needed, unless ntfs.ko is not installed or security 1037 level prohibits loading kernel modules. If either is the case, 1038 "options NTFS" has to be added into kernel config. 1039 104020090115: 1041 TCP Appropriate Byte Counting (RFC 3465) support added to kernel. 1042 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to 1043 800061. User space tools that rely on the size of struct tcpcb in 1044 tcp_var.h (e.g. sockstat) need to be recompiled. 1045 104620081225: 1047 ng_tty(4) module updated to match the new TTY subsystem. 1048 Due to API change, user-level applications must be updated. 1049 New API support added to mpd5 CVS and expected to be present 1050 in next mpd5.3 release. 1051 105220081219: 1053 With __FreeBSD_version 800060 the makefs tool is part of 1054 the base system (it was a port). 1055 105620081216: 1057 The afdata and ifnet locks have been changed from mutexes to 1058 rwlocks, network modules will need to be re-compiled. 1059 106020081214: 1061 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite. 1062 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated. 1063 The new code reduced struct rtentry{} by 16 bytes on 32-bit 1064 architecture and 40 bytes on 64-bit architecture. The userland 1065 applications "arp" and "ndp" have been updated accordingly. 1066 The output from "netstat -r" shows only routing entries and 1067 none of the L2 information. 1068 106920081130: 1070 __FreeBSD_version 800057 marks the switchover from the 1071 binary ath hal to source code. Users must add the line: 1072 1073 options AH_SUPPORT_AR5416 1074 1075 to their kernel config files when specifying: 1076 1077 device ath_hal 1078 1079 The ath_hal module no longer exists; the code is now compiled 1080 together with the driver in the ath module. It is now 1081 possible to tailor chip support (i.e. reduce the set of chips 1082 and thereby the code size); consult ath_hal(4) for details. 1083 108420081121: 1085 __FreeBSD_version 800054 adds memory barriers to 1086 <machine/atomic.h>, new interfaces to ifnet to facilitate 1087 multiple hardware transmit queues for cards that support 1088 them, and a lock-less ring-buffer implementation to 1089 enable drivers to more efficiently manage queueing of 1090 packets. 1091 109220081117: 1093 A new version of ZFS (version 13) has been merged to -HEAD. 1094 This version has zpool attribute "listsnapshots" off by 1095 default, which means "zfs list" does not show snapshots, 1096 and is the same as Solaris behavior. 1097 109820081028: 1099 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled. 1100 110120081009: 1102 The uhci, ohci, ehci and slhci USB Host controller drivers have 1103 been put into separate modules. If you load the usb module 1104 separately through loader.conf you will need to load the 1105 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0 1106 controller add the following to loader.conf: 1107 1108 uhci_load="YES" 1109 ehci_load="YES" 1110 111120081009: 1112 The ABI used by the PMC toolset has changed. Please keep 1113 userland (libpmc(3)) and the kernel module (hwpmc(4)) in 1114 sync. 1115 111620081009: 1117 atapci kernel module now includes only generic PCI ATA 1118 driver. AHCI driver moved to ataahci kernel module. 1119 All vendor-specific code moved into separate kernel modules: 1120 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek, 1121 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron, 1122 atamarvell, atamicron, atanational, atanetcell, atanvidia, 1123 atapromise, ataserverworks, atasiliconimage, atasis, atavia 1124 112520080820: 1126 The TTY subsystem of the kernel has been replaced by a new 1127 implementation, which provides better scalability and an 1128 improved driver model. Most common drivers have been migrated to 1129 the new TTY subsystem, while others have not. The following 1130 drivers have not yet been ported to the new TTY layer: 1131 1132 PCI/ISA: 1133 cy, digi, rc, rp, sio 1134 1135 USB: 1136 ubser, ucycom 1137 1138 Line disciplines: 1139 ng_h4, ng_tty, ppp, sl, snp 1140 1141 Adding these drivers to your kernel configuration file shall 1142 cause compilation to fail. 1143 114420080818: 1145 ntpd has been upgraded to 4.2.4p5. 1146 114720080801: 1148 OpenSSH has been upgraded to 5.1p1. 1149 1150 For many years, FreeBSD's version of OpenSSH preferred DSA 1151 over RSA for host and user authentication keys. With this 1152 upgrade, we've switched to the vendor's default of RSA over 1153 DSA. This may cause upgraded clients to warn about unknown 1154 host keys even for previously known hosts. Users should 1155 follow the usual procedure for verifying host keys before 1156 accepting the RSA key. 1157 1158 This can be circumvented by setting the "HostKeyAlgorithms" 1159 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh 1160 command line. 1161 1162 Please note that the sequence of keys offered for 1163 authentication has been changed as well. You may want to 1164 specify IdentityFile in a different order to revert this 1165 behavior. 1166 116720080713: 1168 The sio(4) driver has been removed from the i386 and amd64 1169 kernel configuration files. This means uart(4) is now the 1170 default serial port driver on those platforms as well. 1171 1172 To prevent collisions with the sio(4) driver, the uart(4) driver 1173 uses different names for its device nodes. This means the 1174 onboard serial port will now most likely be called "ttyu0" 1175 instead of "ttyd0". You may need to reconfigure applications to 1176 use the new device names. 1177 1178 When using the serial port as a boot console, be sure to update 1179 /boot/device.hints and /etc/ttys before booting the new kernel. 1180 If you forget to do so, you can still manually specify the hints 1181 at the loader prompt: 1182 1183 set hint.uart.0.at="isa" 1184 set hint.uart.0.port="0x3F8" 1185 set hint.uart.0.flags="0x10" 1186 set hint.uart.0.irq="4" 1187 boot -s 1188 118920080609: 1190 The gpt(8) utility has been removed. Use gpart(8) to partition 1191 disks instead. 1192 119320080603: 1194 The version that Linuxulator emulates was changed from 2.4.2 1195 to 2.6.16. If you experience any problems with Linux binaries 1196 please try to set sysctl compat.linux.osrelease to 2.4.2 and 1197 if it fixes the problem contact emulation mailing list. 1198 119920080525: 1200 ISDN4BSD (I4B) was removed from the src tree. You may need to 1201 update a your kernel configuration and remove relevant entries. 1202 120320080509: 1204 I have checked in code to support multiple routing tables. 1205 See the man pages setfib(1) and setfib(2). 1206 This is a hopefully backwards compatible version, 1207 but to make use of it you need to compile your kernel 1208 with options ROUTETABLES=2 (or more up to 16). 1209 121020080420: 1211 The 802.11 wireless support was redone to enable multi-bss 1212 operation on devices that are capable. The underlying device 1213 is no longer used directly but instead wlanX devices are 1214 cloned with ifconfig. This requires changes to rc.conf files. 1215 For example, change: 1216 ifconfig_ath0="WPA DHCP" 1217 to 1218 wlans_ath0=wlan0 1219 ifconfig_wlan0="WPA DHCP" 1220 see rc.conf(5) for more details. In addition, mergemaster of 1221 /etc/rc.d is highly recommended. Simultaneous update of userland 1222 and kernel wouldn't hurt either. 1223 1224 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta 1225 modules were merged into the base wlan module. All references 1226 to these modules (e.g. in kernel config files) must be removed. 1227 122820080408: 1229 psm(4) has gained write(2) support in native operation level. 1230 Arbitrary commands can be written to /dev/psm%d and status can 1231 be read back from it. Therefore, an application is responsible 1232 for status validation and error recovery. It is a no-op in 1233 other operation levels. 1234 123520080312: 1236 Support for KSE threading has been removed from the kernel. To 1237 run legacy applications linked against KSE libmap.conf may 1238 be used. The following libmap.conf may be used to ensure 1239 compatibility with any prior release: 1240 1241 libpthread.so.1 libthr.so.1 1242 libpthread.so.2 libthr.so.2 1243 libkse.so.3 libthr.so.3 1244 124520080301: 1246 The layout of struct vmspace has changed. This affects libkvm 1247 and any executables that link against libkvm and use the 1248 kvm_getprocs() function. In particular, but not exclusively, 1249 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1). 1250 The effects are minimal, but it's advisable to upgrade world 1251 nonetheless. 1252 125320080229: 1254 The latest em driver no longer has support in it for the 1255 82575 adapter, this is now moved to the igb driver. The 1256 split was done to make new features that are incompatible 1257 with older hardware easier to do. 1258 125920080220: 1260 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4), 1261 likewise the kernel option is now GEOM_LINUX_LVM. 1262 126320080211: 1264 The default NFS mount mode has changed from UDP to TCP for 1265 increased reliability. If you rely on (insecurely) NFS 1266 mounting across a firewall you may need to update your 1267 firewall rules. 1268 126920080208: 1270 Belatedly note the addition of m_collapse for compacting 1271 mbuf chains. 1272 127320080126: 1274 The fts(3) structures have been changed to use adequate 1275 integer types for their members and so to be able to cope 1276 with huge file trees. The old fts(3) ABI is preserved 1277 through symbol versioning in libc, so third-party binaries 1278 using fts(3) should still work, although they will not take 1279 advantage of the extended types. At the same time, some 1280 third-party software might fail to build after this change 1281 due to unportable assumptions made in its source code about 1282 fts(3) structure members. Such software should be fixed 1283 by its vendor or, in the worst case, in the ports tree. 1284 FreeBSD_version 800015 marks this change for the unlikely 1285 case that a portable fix is impossible. 1286 128720080123: 1288 To upgrade to -current after this date, you must be running 1289 FreeBSD not older than 6.0-RELEASE. Upgrading to -current 1290 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems. 1291 129220071128: 1293 The ADAPTIVE_GIANT kernel option has been retired because its 1294 functionality is the default now. 1295 129620071118: 1297 The AT keyboard emulation of sunkbd(4) has been turned on 1298 by default. In order to make the special symbols of the Sun 1299 keyboards driven by sunkbd(4) work under X these now have 1300 to be configured the same way as Sun USB keyboards driven 1301 by ukbd(4) (which also does AT keyboard emulation), f.e.: 1302 1303 Option "XkbLayout" "us" 1304 Option "XkbRules" "xorg" 1305 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us" 1306 130720071024: 1308 It has been decided that it is desirable to provide ABI 1309 backwards compatibility to the FreeBSD 4/5/6 versions of the 1310 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was 1311 broken with the introduction of PCI domain support (see the 1312 20070930 entry). Unfortunately, this required the ABI of 1313 PCIOCGETCONF to be broken again in order to be able to 1314 provide backwards compatibility to the old version of that 1315 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled 1316 again. As for prominent ports this affects neither pciutils 1317 nor xorg-server this time, the hal port needs to be rebuilt 1318 however. 1319 132020071020: 1321 The misnamed kthread_create() and friends have been renamed 1322 to kproc_create() etc. Many of the callers already 1323 used kproc_start().. 1324 I will return kthread_create() and friends in a while 1325 with implementations that actually create threads, not procs. 1326 Renaming corresponds with version 800002. 1327 132820071010: 1329 RELENG_7 branched. 1330 1331COMMON ITEMS: 1332 1333 General Notes 1334 ------------- 1335 Avoid using make -j when upgrading. While generally safe, there are 1336 sometimes problems using -j to upgrade. If your upgrade fails with 1337 -j, please try again without -j. From time to time in the past there 1338 have been problems using -j with buildworld and/or installworld. This 1339 is especially true when upgrading between "distant" versions (eg one 1340 that cross a major release boundary or several minor releases, or when 1341 several months have passed on the -current branch). 1342 1343 Sometimes, obscure build problems are the result of environment 1344 poisoning. This can happen because the make utility reads its 1345 environment when searching for values for global variables. To run 1346 your build attempts in an "environmental clean room", prefix all make 1347 commands with 'env -i '. See the env(1) manual page for more details. 1348 1349 When upgrading from one major version to another it is generally best 1350 to upgrade to the latest code in the currently installed branch first, 1351 then do an upgrade to the new branch. This is the best-tested upgrade 1352 path, and has the highest probability of being successful. Please try 1353 this approach before reporting problems with a major version upgrade. 1354 1355 ZFS notes 1356 --------- 1357 When upgrading the boot ZFS pool to a new version, always follow 1358 these two steps: 1359 1360 1.) recompile and reinstall the ZFS boot loader and boot block 1361 (this is part of "make buildworld" and "make installworld") 1362 1363 2.) update the ZFS boot block on your boot drive 1364 1365 The following example updates the ZFS boot block on the first 1366 partition (freebsd-boot) of a GPT partitioned drive ad0: 1367 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0" 1368 1369 Non-boot pools do not need these updates. 1370 1371 To build a kernel 1372 ----------------- 1373 If you are updating from a prior version of FreeBSD (even one just 1374 a few days old), you should follow this procedure. It is the most 1375 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld, 1376 1377 make kernel-toolchain 1378 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE 1379 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE 1380 1381 To test a kernel once 1382 --------------------- 1383 If you just want to boot a kernel once (because you are not sure 1384 if it works, or if you want to boot a known bad kernel to provide 1385 debugging information) run 1386 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel 1387 nextboot -k testkernel 1388 1389 To just build a kernel when you know that it won't mess you up 1390 -------------------------------------------------------------- 1391 This assumes you are already running a CURRENT system. Replace 1392 ${arch} with the architecture of your machine (e.g. "i386", 1393 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc). 1394 1395 cd src/sys/${arch}/conf 1396 config KERNEL_NAME_HERE 1397 cd ../compile/KERNEL_NAME_HERE 1398 make depend 1399 make 1400 make install 1401 1402 If this fails, go to the "To build a kernel" section. 1403 1404 To rebuild everything and install it on the current system. 1405 ----------------------------------------------------------- 1406 # Note: sometimes if you are running current you gotta do more than 1407 # is listed here if you are upgrading from a really old current. 1408 1409 <make sure you have good level 0 dumps> 1410 make buildworld 1411 make kernel KERNCONF=YOUR_KERNEL_HERE 1412 [1] 1413 <reboot in single user> [3] 1414 mergemaster -p [5] 1415 make installworld 1416 mergemaster -i [4] 1417 make delete-old [6] 1418 <reboot> 1419 1420 1421 To cross-install current onto a separate partition 1422 -------------------------------------------------- 1423 # In this approach we use a separate partition to hold 1424 # current's root, 'usr', and 'var' directories. A partition 1425 # holding "/", "/usr" and "/var" should be about 2GB in 1426 # size. 1427 1428 <make sure you have good level 0 dumps> 1429 <boot into -stable> 1430 make buildworld 1431 make buildkernel KERNCONF=YOUR_KERNEL_HERE 1432 <maybe newfs current's root partition> 1433 <mount current's root partition on directory ${CURRENT_ROOT}> 1434 make installworld DESTDIR=${CURRENT_ROOT} 1435 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd 1436 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT} 1437 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd 1438 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition> 1439 <reboot into current> 1440 <do a "native" rebuild/install as described in the previous section> 1441 <maybe install compatibility libraries from ports/misc/compat*> 1442 <reboot> 1443 1444 1445 To upgrade in-place from 8.x-stable to current 1446 ---------------------------------------------- 1447 <make sure you have good level 0 dumps> 1448 make buildworld [9] 1449 make kernel KERNCONF=YOUR_KERNEL_HERE [8] 1450 [1] 1451 <reboot in single user> [3] 1452 mergemaster -p [5] 1453 make installworld 1454 mergemaster -i [4] 1455 make delete-old [6] 1456 <reboot> 1457 1458 Make sure that you've read the UPDATING file to understand the 1459 tweaks to various things you need. At this point in the life 1460 cycle of current, things change often and you are on your own 1461 to cope. The defaults can also change, so please read ALL of 1462 the UPDATING entries. 1463 1464 Also, if you are tracking -current, you must be subscribed to 1465 freebsd-current@freebsd.org. Make sure that before you update 1466 your sources that you have read and understood all the recent 1467 messages there. If in doubt, please track -stable which has 1468 much fewer pitfalls. 1469 1470 [1] If you have third party modules, such as vmware, you 1471 should disable them at this point so they don't crash your 1472 system on reboot. 1473 1474 [3] From the bootblocks, boot -s, and then do 1475 fsck -p 1476 mount -u / 1477 mount -a 1478 cd src 1479 adjkerntz -i # if CMOS is wall time 1480 Also, when doing a major release upgrade, it is required that 1481 you boot into single user mode to do the installworld. 1482 1483 [4] Note: This step is non-optional. Failure to do this step 1484 can result in a significant reduction in the functionality of the 1485 system. Attempting to do it by hand is not recommended and those 1486 that pursue this avenue should read this file carefully, as well 1487 as the archives of freebsd-current and freebsd-hackers mailing lists 1488 for potential gotchas. The -U option is also useful to consider. 1489 See mergemaster(8) for more information. 1490 1491 [5] Usually this step is a noop. However, from time to time 1492 you may need to do this if you get unknown user in the following 1493 step. It never hurts to do it all the time. You may need to 1494 install a new mergemaster (cd src/usr.sbin/mergemaster && make 1495 install) after the buildworld before this step if you last updated 1496 from current before 20020224 or from -stable before 20020408. 1497 1498 [6] This only deletes old files and directories. Old libraries 1499 can be deleted by "make delete-old-libs", but you have to make 1500 sure that no program is using those libraries anymore. 1501 1502 [8] In order to have a kernel that can run the 4.x binaries needed to 1503 do an installworld, you must include the COMPAT_FREEBSD4 option in 1504 your kernel. Failure to do so may leave you with a system that is 1505 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is 1506 required to run the 5.x binaries on more recent kernels. And so on 1507 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7. 1508 1509 Make sure that you merge any new devices from GENERIC since the 1510 last time you updated your kernel config file. 1511 1512 [9] When checking out sources, you must include the -P flag to have 1513 cvs prune empty directories. 1514 1515 If CPUTYPE is defined in your /etc/make.conf, make sure to use the 1516 "?=" instead of the "=" assignment operator, so that buildworld can 1517 override the CPUTYPE if it needs to. 1518 1519 MAKEOBJDIRPREFIX must be defined in an environment variable, and 1520 not on the command line, or in /etc/make.conf. buildworld will 1521 warn if it is improperly defined. 1522FORMAT: 1523 1524This file contains a list, in reverse chronological order, of major 1525breakages in tracking -current. It is not guaranteed to be a complete 1526list of such breakages, and only contains entries since October 10, 2007. 1527If you need to see UPDATING entries from before that date, you will need 1528to fetch an UPDATING file from an older FreeBSD release. 1529 1530Copyright information: 1531 1532Copyright 1998-2009 M. Warner Losh. All Rights Reserved. 1533 1534Redistribution, publication, translation and use, with or without 1535modification, in full or in part, in any form or format of this 1536document are permitted without further permission from the author. 1537 1538THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR 1539IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 1540WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 1541DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT, 1542INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 1543(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 1544SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 1545HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 1546STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 1547IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 1548POSSIBILITY OF SUCH DAMAGE. 1549 1550Contact Warner Losh if you have any questions about your use of 1551this document. 1552 1553$FreeBSD$ 1554