UPDATING revision 241600
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 completely disable malloc 23 debugging, define MALLOC_PRODUCTION in /etc/make.conf, or to merely 24 disable the most expensive debugging functionality run 25 "ln -s 'abort:false,junk:false' /etc/malloc.conf".) 26 2720121015: 28 The sdhci driver was split in two parts: sdhci (generic SD Host 29 Controller logic) and sdhci_pci (actual hardware driver). 30 No kernel config modifications are required, but if you 31 load sdhc as a module you must switch to sdhci_pci instead. 32 3320121014: 34 Import the FUSE kernel and userland support into base system. 35 3620121013: 37 The GNU sort(1) program has been removed since the BSD-licensed 38 sort(1) has been the default for quite some time and no serious 39 problems have been reported. The corresponding WITH_GNU_SORT 40 knob has also gone. 41 4220121006: 43 The pfil(9) API/ABI for AF_INET family has been changed. Packet 44 filtering modules: pf(4), ipfw(4), ipfilter(4) need to be recompiled 45 with new kernel. 46 4720121001: 48 The net80211(4) ABI has been changed to allow for improved driver 49 PS-POLL and power-save support. All wireless drivers need to be 50 recompiled to work with the new kernel. 51 5220120913: 53 The random(4) support for the VIA hardware random number 54 generator (`PADLOCK') is no longer enabled unconditionally. 55 Add the PADLOCK_RNG option in the custom kernel config if 56 needed. The GENERIC kernels on i386 and amd64 do include the 57 option, so the change only affects the custom kernel 58 configurations. 59 6020120908: 61 The pf(4) packet filter ABI has been changed. pfctl(8) and 62 snmp_pf module need to be recompiled to work with new kernel. 63 6420120828: 65 A new ZFS feature flag "com.delphix:empty_bpobj" has been merged 66 to -HEAD. Pools that have empty_bpobj in active state can not be 67 imported read-write with ZFS implementations that do not support 68 this feature. For more information read the zpool-features(5) 69 manual page. 70 7120120727: 72 The sparc64 ZFS loader has been changed to no longer try to auto- 73 detect ZFS providers based on diskN aliases but now requires these 74 to be explicitly listed in the OFW boot-device environment variable. 75 7620120712: 77 The OpenSSL has been upgraded to 1.0.1c. Any binaries requiring 78 libcrypto.so.6 or libssl.so.6 must be recompiled. Also, there are 79 configuration changes. Make sure to merge /etc/ssl/openssl.cnf. 80 8120120712: 82 The following sysctls and tunables have been renamed for consistency 83 with other variables: 84 kern.cam.da.da_send_ordered -> kern.cam.da.send_ordered 85 kern.cam.ada.ada_send_ordered -> kern.cam.ada.send_ordered 86 8720120628: 88 The sort utility has been replaced with BSD sort. For now, GNU sort 89 is also available as "gnusort" or the default can be set back to 90 GNU sort by setting WITH_GNU_SORT. In this case, BSD sort will be 91 installed as "bsdsort". 92 9320120611: 94 A new version of ZFS (pool version 5000) has been merged to -HEAD. 95 Starting with this version the old system of ZFS pool versioning 96 is superseded by "feature flags". This concept enables forward 97 compatibility against certain future changes in functionality of ZFS 98 pools. The first read-only compatible "feature flag" for ZFS pools 99 is named "com.delphix:async_destroy". For more information 100 read the new zpool-features(5) manual page. 101 Please refer to the "ZFS notes" section of this file for information 102 on upgrading boot ZFS pools. 103 10420120417: 105 The malloc(3) implementation embedded in libc now uses sources imported 106 as contrib/jemalloc. The most disruptive API change is to 107 /etc/malloc.conf. If your system has an old-style /etc/malloc.conf, 108 delete it prior to installworld, and optionally re-create it using the 109 new format after rebooting. See malloc.conf(5) for details 110 (specifically the TUNING section and the "opt.*" entries in the MALLCTL 111 NAMESPACE section). 112 11320120328: 114 Big-endian MIPS TARGET_ARCH values no longer end in "eb". mips64eb 115 is now spelled mips64. mipsn32eb is now spelled mipsn32. mipseb is 116 now spelled mips. This is to aid compatibility with third-party 117 software that expects this naming scheme in uname(3). Little-endian 118 settings are unchanged. 119 12020120306: 121 Disable by default the option VFS_ALLOW_NONMPSAFE for all supported 122 platforms. 123 12420120229: 125 Now unix domain sockets behave "as expected" on nullfs(5). Previously 126 nullfs(5) did not pass through all behaviours to the underlying layer, 127 as a result if we bound to a socket on the lower layer we could connect 128 only to the lower path; if we bound to the upper layer we could connect 129 only to the upper path. The new behavior is one can connect to both the 130 lower and the upper paths regardless what layer path one binds to. 131 13220120211: 133 The getifaddrs upgrade path broken with 20111215 has been restored. 134 If you have upgraded in between 20111215 and 20120209 you need to 135 recompile libc again with your kernel. You still need to recompile 136 world to be able to configure CARP but this restriction already 137 comes from 20111215. 138 13920120114: 140 The set_rcvar() function has been removed from /etc/rc.subr. All 141 base and ports rc.d scripts have been updated, so if you have a 142 port installed with a script in /usr/local/etc/rc.d you can either 143 hand-edit the rcvar= line, or reinstall the port. 144 145 An easy way to handle the mass-update of /etc/rc.d: 146 rm /etc/rc.d/* && mergemaster -i 147 14820120109: 149 panic(9) now stops other CPUs in the SMP systems, disables interrupts 150 on the current CPU and prevents other threads from running. 151 This behavior can be reverted using the kern.stop_scheduler_on_panic 152 tunable/sysctl. 153 The new behavior can be incompatible with kern.sync_on_panic. 154 15520111215: 156 The carp(4) facility has been changed significantly. Configuration 157 of the CARP protocol via ifconfig(8) has changed, as well as format 158 of CARP events submitted to devd(8) has changed. See manual pages 159 for more information. The arpbalance feature of carp(4) is currently 160 not supported anymore. 161 162 Size of struct in_aliasreq, struct in6_aliasreq has changed. User 163 utilities using SIOCAIFADDR, SIOCAIFADDR_IN6, e.g. ifconfig(8), 164 need to be recompiled. 165 16620111122: 167 The acpi_wmi(4) status device /dev/wmistat has been renamed to 168 /dev/wmistat0. 169 17020111108: 171 The option VFS_ALLOW_NONMPSAFE option has been added in order to 172 explicitely support non-MPSAFE filesystems. 173 It is on by default for all supported platform at this present 174 time. 175 17620111101: 177 The broken amd(4) driver has been replaced with esp(4) in the amd64, 178 i386 and pc98 GENERIC kernel configuration files. 179 18020110930: 181 sysinstall has been removed 182 18320110923: 184 The stable/9 branch created in subversion. This corresponds to the 185 RELENG_9 branch in CVS. 186 18720110913: 188 This commit modifies vfs_register() so that it uses a hash 189 calculation to set vfc_typenum, which is enabled by default. 190 The first time a system is booted after this change, the 191 vfc_typenum values will change for all file systems. The 192 main effect of this is a change to the NFS server file handles 193 for file systems that use vfc_typenum in their fsid, such as ZFS. 194 It will, however, prevent vfc_typenum from changing when file 195 systems are loaded in a different order for subsequent reboots. 196 To disable this, you can set vfs.typenumhash=0 in /boot/loader.conf 197 until you are ready to remount all NFS clients after a reboot. 198 19920110828: 200 Bump the shared library version numbers for libraries that 201 do not use symbol versioning, have changed the ABI compared 202 to stable/8 and which shared library version was not bumped. 203 Done as part of 9.0-RELEASE cycle. 204 20520110815: 206 During the merge of Capsicum features, the fget(9) KPI was modified. 207 This may require the rebuilding of out-of-tree device drivers -- 208 issues have been reported specifically with the nVidia device driver. 209 __FreeBSD_version is bumped to 900041. 210 211 Also, there is a period between 20110811 and 20110814 where the 212 special devices /dev/{stdin,stdout,stderr} did not work correctly. 213 Building world from a kernel during that window may not work. 214 21520110628: 216 The packet filter (pf) code has been updated to OpenBSD 4.5. 217 You need to update userland tools to be in sync with kernel. 218 This update breaks backward compatibility with earlier pfsync(4) 219 versions. Care must be taken when updating redundant firewall setups. 220 22120110608: 222 The following sysctls and tunables are retired on x86 platforms: 223 machdep.hlt_cpus 224 machdep.hlt_logical_cpus 225 The following sysctl is retired: 226 machdep.hyperthreading_allowed 227 The sysctls were supposed to provide a way to dynamically offline and 228 online selected CPUs on x86 platforms, but the implementation has not 229 been reliable especially with SCHED_ULE scheduler. 230 machdep.hyperthreading_allowed tunable is still available to ignore 231 hyperthreading CPUs at OS level. 232 Individual CPUs can be disabled using hint.lapic.X.disabled tunable, 233 where X is an APIC ID of a CPU. Be advised, though, that disabling 234 CPUs in non-uniform fashion will result in non-uniform topology and 235 may lead to sub-optimal system performance with SCHED_ULE, which is 236 a default scheduler. 237 23820110607: 239 cpumask_t type is retired and cpuset_t is used in order to describe 240 a mask of CPUs. 241 24220110531: 243 Changes to ifconfig(8) for dynamic address family detection mandate 244 that you are running a kernel of 20110525 or later. Make sure to 245 follow the update procedure to boot a new kernel before installing 246 world. 247 24820110513: 249 Support for sun4v architecture is officially dropped 250 25120110503: 252 Several KPI breaking changes have been committed to the mii(4) layer, 253 the PHY drivers and consequently some Ethernet drivers using mii(4). 254 This means that miibus.ko and the modules of the affected Ethernet 255 drivers need to be recompiled. 256 257 Note to kernel developers: Given that the OUI bit reversion problem 258 was fixed as part of these changes all mii(4) commits related to OUIs, 259 i.e. to sys/dev/mii/miidevs, PHY driver probing and vendor specific 260 handling, no longer can be merged verbatim to stable/8 and previous 261 branches. 262 26320110430: 264 Users of the Atheros AR71xx SoC code now need to add 'device ar71xx_pci' 265 into their kernel configurations along with 'device pci'. 266 26720110427: 268 The default NFS client is now the new NFS client, so fstype "newnfs" 269 is now "nfs" and the regular/old NFS client is now fstype "oldnfs". 270 Although mounts via fstype "nfs" will usually work without userland 271 changes, it is recommended that the mount(8) and mount_nfs(8) 272 commands be rebuilt from sources and that a link to mount_nfs called 273 mount_oldnfs be created. The new client is compiled into the 274 kernel with "options NFSCL" and this is needed for diskless root 275 file systems. The GENERIC kernel configs have been changed to use 276 NFSCL and NFSD (the new server) instead of NFSCLIENT and NFSSERVER. 277 To use the regular/old client, you can "mount -t oldnfs ...". For 278 a diskless root file system, you must also include a line like: 279 280 vfs.root.mountfrom="oldnfs:" 281 282 in the boot/loader.conf on the root fs on the NFS server to make 283 a diskless root fs use the old client. 284 28520110424: 286 The GENERIC kernels for all architectures now default to the new 287 CAM-based ATA stack. It means that all legacy ATA drivers were 288 removed and replaced by respective CAM drivers. If you are using 289 ATA device names in /etc/fstab or other places, make sure to update 290 them respectively (adX -> adaY, acdX -> cdY, afdX -> daY, astX -> saY, 291 where 'Y's are the sequential numbers starting from zero for each type 292 in order of detection, unless configured otherwise with tunables, 293 see cam(4)). There will be symbolic links created in /dev/ to map 294 old adX devices to the respective adaY. They should provide basic 295 compatibility for file systems mounting in most cases, but they do 296 not support old user-level APIs and do not have respective providers 297 in GEOM. Consider using updated management tools with new device names. 298 299 It is possible to load devices ahci, ata, siis and mvs as modules, 300 but option ATA_CAM should remain in kernel configuration to make ata 301 module work as CAM driver supporting legacy ATA controllers. Device ata 302 still can be used in modular fashion (atacore + ...). Modules atadisk 303 and atapi* are not used and won't affect operation in ATA_CAM mode. 304 Note that to use CAM-based ATA kernel should include CAM devices 305 scbus, pass, da (or explicitly ada), cd and optionally others. All of 306 them are parts of the cam module. 307 308 ataraid(4) functionality is now supported by the RAID GEOM class. 309 To use it you can load geom_raid kernel module and use graid(8) tool 310 for management. Instead of /dev/arX device names, use /dev/raid/rX. 311 312 No kernel config options or code have been removed, so if a problem 313 arises, please report it and optionally revert to the old ATA stack. 314 In order to do it you can remove from the kernel config: 315 options ATA_CAM 316 device ahci 317 device mvs 318 device siis 319 , and instead add back: 320 device atadisk # ATA disk drives 321 device ataraid # ATA RAID drives 322 device atapicd # ATAPI CDROM drives 323 device atapifd # ATAPI floppy drives 324 device atapist # ATAPI tape drives 325 32620110423: 327 The default NFS server has been changed to the new server, which 328 was referred to as the experimental server. If you need to switch 329 back to the old NFS server, you must now put the "-o" option on 330 both the mountd and nfsd commands. This can be done using the 331 mountd_flags and nfs_server_flags rc.conf variables until an 332 update to the rc scripts is committed, which is coming soon. 333 33420110418: 335 The GNU Objective-C runtime library (libobjc), and other Objective-C 336 related components have been removed from the base system. If you 337 require an Objective-C library, please use one of the available ports. 338 33920110331: 340 ath(4) has been split into bus- and device- modules. if_ath contains 341 the HAL, the TX rate control and the network device code. if_ath_pci 342 contains the PCI bus glue. For Atheros MIPS embedded systems, if_ath_ahb 343 contains the AHB glue. Users need to load both if_ath_pci and if_ath 344 in order to use ath on everything else. 345 346 TO REPEAT: if_ath_ahb is not needed for normal users. Normal users only 347 need to load if_ath and if_ath_pci for ath(4) operation. 348 34920110314: 350 As part of the replacement of sysinstall, the process of building 351 release media has changed significantly. For details, please re-read 352 release(7), which has been updated to reflect the new build process. 353 35420110218: 355 GNU binutils 2.17.50 (as of 2007-07-03) has been merged to -HEAD. This 356 is the last available version under GPLv2. It brings a number of new 357 features, such as support for newer x86 CPU's (with SSE-3, SSSE-3, SSE 358 4.1 and SSE 4.2), better support for powerpc64, a number of new 359 directives, and lots of other small improvements. See the ChangeLog 360 file in contrib/binutils for the full details. 361 36220110218: 363 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868 364 compliant, and will now use half of hash for authentication. 365 This will break interoperability with all stacks (including all 366 actual FreeBSD versions) who implement 367 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for 368 authentication). 369 The only workaround with such peers is to use another HMAC 370 algorithm for IPsec ("phase 2") authentication. 371 37220110207: 373 Remove the uio_yield prototype and symbol. This function has 374 been misnamed since it was introduced and should not be 375 globally exposed with this name. The equivalent functionality 376 is now available using kern_yield(curthread->td_user_pri). 377 The function remains undocumented. 378 37920110112: 380 A SYSCTL_[ADD_]UQUAD was added for unsigned uint64_t pointers, 381 symmetric with the existing SYSCTL_[ADD_]QUAD. Type checking 382 for scalar sysctls is defined but disabled. Code that needs 383 UQUAD to pass the type checking that must compile on older 384 systems where the define is not present can check against 385 __FreeBSD_version >= 900030. 386 387 The system dialog(1) has been replaced with a new version previously 388 in ports as devel/cdialog. dialog(1) is mostly command-line compatible 389 with the previous version, but the libdialog associated with it has 390 a largely incompatible API. As such, the original version of libdialog 391 will be kept temporarily as libodialog, until its base system consumers 392 are replaced or updated. Bump __FreeBSD_version to 900030. 393 39420110103: 395 If you are trying to run make universe on a -stable system, and you get 396 the following warning: 397 "Makefile", line 356: "Target architecture for i386/conf/GENERIC 398 unknown. config(8) likely too old." 399 or something similar to it, then you must upgrade your -stable system 400 to 8.2-Release or newer (really, any time after r210146 7/15/2010 in 401 stable/8) or build the config from the latest stable/8 branch and 402 install it on your system. 403 404 Prior to this date, building a current universe on 8-stable system from 405 between 7/15/2010 and 1/2/2011 would result in a weird shell parsing 406 error in the first kernel build phase. A new config on those old 407 systems will fix that problem for older versions of -current. 408 40920101228: 410 The TCP stack has been modified to allow Khelp modules to interact with 411 it via helper hook points and store per-connection data in the TCP 412 control block. Bump __FreeBSD_version to 900029. User space tools that 413 rely on the size of struct tcpcb in tcp_var.h (e.g. sockstat) need to 414 be recompiled. 415 41620101114: 417 Generic IEEE 802.3 annex 31B full duplex flow control support has been 418 added to mii(4) and bge(4), bce(4), msk(4), nfe(4) and stge(4) along 419 with brgphy(4), e1000phy(4) as well as ip1000phy() have been converted 420 to take advantage of it instead of using custom implementations. This 421 means that these drivers now no longer unconditionally advertise 422 support for flow control but only do so if flow control is a selected 423 media option. This was implemented in the generic support that way in 424 order to allow flow control to be switched on and off via ifconfig(8) 425 with the PHY specific default to typically off in order to protect 426 from unwanted effects. Consequently, if you used flow control with 427 one of the above mentioned drivers you now need to explicitly enable 428 it, for example via: 429 ifconfig bge0 media auto mediaopt flowcontrol 430 431 Along with the above mentioned changes generic support for setting 432 1000baseT master mode also has been added and brgphy(4), ciphy(4), 433 e1000phy(4) as well as ip1000phy(4) have been converted to take 434 advantage of it. This means that these drivers now no longer take the 435 link0 parameter for selecting master mode but the master media option 436 has to be used instead, for example like in the following: 437 ifconfig bge0 media 1000baseT mediaopt full-duplex,master 438 439 Selection of master mode now is also available with all other PHY 440 drivers supporting 1000baseT. 441 44220101111: 443 The TCP stack has received a significant update to add support for 444 modularised congestion control and generally improve the clarity of 445 congestion control decisions. Bump __FreeBSD_version to 900025. User 446 space tools that rely on the size of struct tcpcb in tcp_var.h (e.g. 447 sockstat) need to be recompiled. 448 44920101002: 450 The man(1) utility has been replaced by a new version that no longer 451 uses /etc/manpath.config. Please consult man.conf(5) for how to 452 migrate local entries to the new format. 453 45420100928: 455 The copyright strings printed by login(1) and sshd(8) at the time of a 456 new connection have been removed to follow other operating systems and 457 upstream sshd. 458 45920100915: 460 A workaround for a fixed ld bug has been removed in kernel code, 461 so make sure that your system ld is built from sources after 462 revision 210245 from 2010-07-19 (r211583 if building head kernel 463 on stable/8, r211584 for stable/7; both from 2010-08-21). 464 A symptom of incorrect ld version is different addresses for 465 set_pcpu section and __start_set_pcpu symbol in kernel and/or modules. 466 46720100913: 468 The $ipv6_prefer variable in rc.conf(5) has been split into 469 $ip6addrctl_policy and $ipv6_activate_all_interfaces. 470 471 The $ip6addrctl_policy is a variable to choose a pre-defined 472 address selection policy set by ip6addrctl(8). A value 473 "ipv4_prefer", "ipv6_prefer" or "AUTO" can be specified. The 474 default is "AUTO". 475 476 The $ipv6_activate_all_interfaces specifies whether IFDISABLED 477 flag (see an entry of 20090926) is set on an interface with no 478 corresponding $ifconfig_IF_ipv6 line. The default is "NO" for 479 security reason. If you want IPv6 link-local address on all 480 interfaces by default, set this to "YES". 481 482 The old ipv6_prefer="YES" is equivalent to 483 ipv6_activate_all_interfaces="YES" and 484 ip6addrctl_policy="ipv6_prefer". 485 48620100913: 487 DTrace has grown support for userland tracing. Due to this, DTrace is 488 now i386 and amd64 only. 489 dtruss(1) is now installed by default on those systems and a new 490 kernel module is needed for userland tracing: fasttrap. 491 No changes to your kernel config file are necessary to enable 492 userland tracing, but you might consider adding 'STRIP=' and 493 'CFLAGS+=-fno-omit-frame-pointer' to your make.conf if you want 494 to have informative userland stack traces in DTrace (ustack). 495 49620100725: 497 The acpi_aiboost(4) driver has been removed in favor of the new 498 aibs(4) driver. You should update your kernel configuration file. 499 50020100722: 501 BSD grep has been imported to the base system and it is built by 502 default. It is completely BSD licensed, highly GNU-compatible, uses 503 less memory than its GNU counterpart and has a small codebase. 504 However, it is slower than its GNU counterpart, which is mostly 505 noticeable for larger searches, for smaller ones it is measurable 506 but not significant. The reason is complex, the most important factor 507 is that we lack a modern and efficient regex library and GNU 508 overcomes this by optimizing the searches internally. Future work 509 on improving the regex performance is planned, for the meantime, 510 users that need better performance, can build GNU grep instead by 511 setting the WITH_GNU_GREP knob. 512 51320100713: 514 Due to the import of powerpc64 support, all existing powerpc kernel 515 configuration files must be updated with a machine directive like this: 516 machine powerpc powerpc 517 518 In addition, an updated config(8) is required to build powerpc kernels 519 after this change. 520 52120100713: 522 A new version of ZFS (version 15) has been merged to -HEAD. 523 This version uses a python library for the following subcommands: 524 zfs allow, zfs unallow, zfs groupspace, zfs userspace. 525 For full functionality of these commands the following port must 526 be installed: sysutils/py-zfs 527 52820100429: 529 'vm_page's are now hashed by physical address to an array of mutexes. 530 Currently this is only used to serialize access to hold_count. Over 531 time the page queue mutex will be peeled away. This changes the size 532 of pmap on every architecture. And requires all callers of vm_page_hold 533 and vm_page_unhold to be updated. 534 53520100402: 536 WITH_CTF can now be specified in src.conf (not recommended, there 537 are some problems with static executables), make.conf (would also 538 affect ports which do not use GNU make and do not override the 539 compile targets) or in the kernel config (via "makeoptions 540 WITH_CTF=yes"). 541 When WITH_CTF was specified there before this was silently ignored, 542 so make sure that WITH_CTF is not used in places which could lead 543 to unwanted behavior. 544 54520100311: 546 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32 547 to allow 32-bit compatibility on non-x86 platforms. All kernel 548 configurations on amd64 and ia64 platforms using these options must 549 be modified accordingly. 550 55120100113: 552 The utmp user accounting database has been replaced with utmpx, 553 the user accounting interface standardized by POSIX. 554 Unfortunately the semantics of utmp and utmpx don't match, 555 making it practically impossible to support both interfaces. 556 The user accounting database is used by tools like finger(1), 557 last(1), talk(1), w(1) and ac(8). 558 559 All applications in the base system use utmpx. This means only 560 local binaries (e.g. from the ports tree) may still use these 561 utmp database files. These applications must be rebuilt to make 562 use of utmpx. 563 564 After the system has been upgraded, it is safe to remove the old 565 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*), 566 assuming their contents is of no importance anymore. Old wtmp 567 databases can only be used by last(1) and ac(8) after they have 568 been converted to the new format using wtmpcvt(1). 569 57020100108: 571 Introduce the kernel thread "deadlock resolver" (which can be enabled 572 via the DEADLKRES option, see NOTES for more details) and the 573 sleepq_type() function for sleepqueues. 574 57520091202: 576 The rc.firewall and rc.firewall6 were unified, and 577 rc.firewall6 and rc.d/ip6fw were removed. 578 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc 579 variables are obsoleted. Instead, the following new rc 580 variables are added to rc.d/ipfw: 581 582 firewall_client_net_ipv6, firewall_simple_iif_ipv6, 583 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6, 584 firewall_simple_onet_ipv6, firewall_trusted_ipv6 585 586 The meanings correspond to the relevant IPv4 variables. 587 58820091125: 589 8.0-RELEASE. 590 59120091113: 592 The default terminal emulation for syscons(4) has been changed 593 from cons25 to xterm on all platforms except pc98. This means 594 that the /etc/ttys file needs to be updated to ensure correct 595 operation of applications on the console. 596 597 The terminal emulation style can be toggled per window by using 598 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration 599 options can be used to change the compile-time default back to 600 cons25. 601 602 To prevent graphical artifacts, make sure the TERM environment 603 variable is set to match the terminal emulation that is being 604 performed by syscons(4). 605 60620091109: 607 The layout of the structure ieee80211req_scan_result has changed. 608 Applications that require wireless scan results (e.g. ifconfig(8)) 609 from net80211 need to be recompiled. 610 611 Applications such as wpa_supplicant(8) may require a full world 612 build without using NO_CLEAN in order to get synchronized with the 613 new structure. 614 61520091025: 616 The iwn(4) driver has been updated to support the 5000 and 5150 series. 617 There's one kernel module for each firmware. Adding "device iwnfw" 618 to the kernel configuration file means including all three firmware 619 images inside the kernel. If you want to include just the one for 620 your wireless card, use the devices iwn4965fw, iwn5000fw or 621 iwn5150fw. 622 62320090926: 624 The rc.d/network_ipv6, IPv6 configuration script has been integrated 625 into rc.d/netif. The changes are the following: 626 627 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF 628 for IPv4. For aliases, $ifconfig_IF_aliasN should be used. 629 Note that both variables need the "inet6" keyword at the head. 630 631 Do not set $ipv6_network_interfaces manually if you do not 632 understand what you are doing. It is not needed in most cases. 633 634 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but 635 they are obsolete. 636 637 2. $ipv6_enable is obsolete. Use $ipv6_prefer and 638 "inet6 accept_rtadv" keyword in ifconfig(8) instead. 639 640 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and 641 all configured interfaces have "inet6 accept_rtadv" in the 642 $ifconfig_IF_ipv6. These are for backward compatibility. 643 644 3. A new variable $ipv6_prefer has been added. If NO, IPv6 645 functionality of interfaces with no corresponding 646 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag, 647 and the default address selection policy of ip6addrctl(8) 648 is the IPv4-preferred one (see rc.d/ip6addrctl for more details). 649 Note that if you want to configure IPv6 functionality on the 650 disabled interfaces after boot, first you need to clear the flag by 651 using ifconfig(8) like: 652 653 ifconfig em0 inet6 -ifdisabled 654 655 If YES, the default address selection policy is set as 656 IPv6-preferred. 657 658 The default value of $ipv6_prefer is NO. 659 660 4. If your system need to receive Router Advertisement messages, 661 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8) 662 scripts automatically invoke rtsol(8) when the interface becomes 663 UP. The Router Advertisement messages are used for SLAAC 664 (State-Less Address AutoConfiguration). 665 66620090922: 667 802.11s D3.03 support was committed. This is incompatible with the 668 previous code, which was based on D3.0. 669 67020090912: 671 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value 672 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to 673 control whether accepting Router Advertisement messages or not. 674 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and 675 a sysctl variable net.inet6.ip6.auto_linklocal is its default value. 676 The ifconfig(8) utility now supports these flags. 677 67820090910: 679 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for 680 mount(8) and -a option for df(1) to see them. 681 68220090825: 683 The old tunable hw.bus.devctl_disable has been superseded by 684 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be 685 replaced by hw.bus.devctl_queue=0. The default for this new tunable 686 is 1000. 687 68820090813: 689 Remove the option STOP_NMI. The default action is now to use NMI only 690 for KDB via the newly introduced function stop_cpus_hard() and 691 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64. 692 69320090803: 694 The stable/8 branch created in subversion. This corresponds to the 695 RELENG_8 branch in CVS. 696 69720090719: 698 Bump the shared library version numbers for all libraries that do not 699 use symbol versioning as part of the 8.0-RELEASE cycle. Bump 700 __FreeBSD_version to 800105. 701 70220090714: 703 Due to changes in the implementation of virtual network stack support, 704 all network-related kernel modules must be recompiled. As this change 705 breaks the ABI, bump __FreeBSD_version to 800104. 706 70720090713: 708 The TOE interface to the TCP syncache has been modified to remove 709 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. 710 The cxgb driver is the only TOE consumer affected by this change, and 711 needs to be recompiled along with the kernel. As this change breaks 712 the ABI, bump __FreeBSD_version to 800103. 713 71420090712: 715 Padding has been added to struct tcpcb, sackhint and tcpstat in 716 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst 717 maintaining the ABI. However, this change breaks the ABI, so bump 718 __FreeBSD_version to 800102. User space tools that rely on the size of 719 any of these structs (e.g. sockstat) need to be recompiled. 720 72120090630: 722 The NFS_LEGACYRPC option has been removed along with the old kernel 723 RPC implementation that this option selected. Kernel configurations 724 may need to be adjusted. 725 72620090629: 727 The network interface device nodes at /dev/net/<interface> have been 728 removed. All ioctl operations can be performed the normal way using 729 routing sockets. The kqueue functionality can generally be replaced 730 with routing sockets. 731 73220090628: 733 The documentation from the FreeBSD Documentation Project (Handbook, 734 FAQ, etc.) is now installed via packages by sysinstall(8) and under 735 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc. 736 73720090624: 738 The ABI of various structures related to the SYSV IPC API have been 739 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel 740 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to 741 800100. 742 74320090622: 744 Layout of struct vnet has changed as routing related variables were 745 moved to their own Vimage module. Modules need to be recompiled. Bump 746 __FreeBSD_version to 800099. 747 74820090619: 749 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024 750 respectively. As long as no more than 16 groups per process are used, 751 no changes should be visible. When more than 16 groups are used, old 752 binaries may fail if they call getgroups() or getgrouplist() with 753 statically sized storage. Recompiling will work around this, but 754 applications should be modified to use dynamically allocated storage 755 for group arrays as POSIX.1-2008 does not cap an implementation's 756 number of supported groups at NGROUPS_MAX+1 as previous versions did. 757 758 NFS and portalfs mounts may also be affected as the list of groups is 759 truncated to 16. Users of NFS who use more than 16 groups, should 760 take care that negative group permissions are not used on the exported 761 file systems as they will not be reliable unless a GSSAPI based 762 authentication method is used. 763 76420090616: 765 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This 766 option compiles in the support for adaptive spinning for lockmgrs 767 which want to enable it. The lockinit() function now accepts the flag 768 LK_ADAPTIVE in order to make the lock object subject to adaptive 769 spinning when both held in write and read mode. 770 77120090613: 772 The layout of the structure returned by IEEE80211_IOC_STA_INFO has 773 changed. User applications that use this ioctl need to be rebuilt. 774 77520090611: 776 The layout of struct thread has changed. Kernel and modules need to 777 be rebuilt. 778 77920090608: 780 The layout of structs ifnet, domain, protosw and vnet_net has changed. 781 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097. 782 78320090602: 784 window(1) has been removed from the base system. It can now be 785 installed from ports. The port is called misc/window. 786 78720090601: 788 The way we are storing and accessing `routing table' entries has 789 changed. Programs reading the FIB, like netstat, need to be 790 re-compiled. 791 79220090601: 793 A new netisr implementation has been added for FreeBSD 8. Network 794 file system modules, such as igmp, ipdivert, and others, should be 795 rebuilt. 796 Bump __FreeBSD_version to 800096. 797 79820090530: 799 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no 800 more valid. 801 80220090530: 803 Add VOP_ACCESSX(9). File system modules need to be rebuilt. 804 Bump __FreeBSD_version to 800094. 805 80620090529: 807 Add mnt_xflag field to 'struct mount'. File system modules need to be 808 rebuilt. 809 Bump __FreeBSD_version to 800093. 810 81120090528: 812 The compiling option ADAPTIVE_SX has been retired while it has been 813 introduced the option NO_ADAPTIVE_SX which handles the reversed logic. 814 The KPI for sx_init_flags() changes as accepting flags: 815 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has 816 been introduced in order to handle the reversed logic. 817 Bump __FreeBSD_version to 800092. 818 81920090527: 820 Add support for hierarchical jails. Remove global securelevel. 821 Bump __FreeBSD_version to 800091. 822 82320090523: 824 The layout of struct vnet_net has changed, therefore modules 825 need to be rebuilt. 826 Bump __FreeBSD_version to 800090. 827 82820090523: 829 The newly imported zic(8) produces a new format in the output. Please 830 run tzsetup(8) to install the newly created data to /etc/localtime. 831 83220090520: 833 The sysctl tree for the usb stack has renamed from hw.usb2.* to 834 hw.usb.* and is now consistent again with previous releases. 835 83620090520: 837 802.11 monitor mode support was revised and driver api's were changed. 838 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead 839 of DLT_IEEE802_11. No user-visible data structures were changed but 840 applications that use DLT_IEEE802_11 may require changes. 841 Bump __FreeBSD_version to 800088. 842 84320090430: 844 The layout of the following structs has changed: sysctl_oid, 845 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet, 846 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or 847 panics may be experienced. World rebuild is required for 848 correctly checking networking state from userland. 849 Bump __FreeBSD_version to 800085. 850 85120090429: 852 MLDv2 and Source-Specific Multicast (SSM) have been merged 853 to the IPv6 stack. VIMAGE hooks are in but not yet used. 854 The implementation of SSM within FreeBSD's IPv6 stack closely 855 follows the IPv4 implementation. 856 857 For kernel developers: 858 859 * The most important changes are that the ip6_output() and 860 ip6_input() paths no longer take the IN6_MULTI_LOCK, 861 and this lock has been downgraded to a non-recursive mutex. 862 863 * As with the changes to the IPv4 stack to support SSM, filtering 864 of inbound multicast traffic must now be performed by transport 865 protocols within the IPv6 stack. This does not apply to TCP and 866 SCTP, however, it does apply to UDP in IPv6 and raw IPv6. 867 868 * The KPIs used by IPv6 multicast are similar to those used by 869 the IPv4 stack, with the following differences: 870 * im6o_mc_filter() is analogous to imo_multicast_filter(). 871 * The legacy KAME entry points in6_joingroup and in6_leavegroup() 872 are shimmed to in6_mc_join() and in6_mc_leave() respectively. 873 * IN6_LOOKUP_MULTI() has been deprecated and removed. 874 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs 875 for MLDv1 have an additional 'timer' argument which is used to 876 jitter the initial membership report for the solicited-node 877 multicast membership on-link. 878 * This is not strictly needed for MLDv2, which already jitters 879 its report transmissions. However, the 'timer' argument is 880 preserved in case MLDv1 is active on the interface. 881 882 * The KAME linked-list based IPv6 membership implementation has 883 been refactored to use a vector similar to that used by the IPv4 884 stack. 885 Code which maintains a list of its own multicast memberships 886 internally, e.g. carp, has been updated to reflect the new 887 semantics. 888 889 * There is a known Lock Order Reversal (LOR) due to in6_setscope() 890 acquiring the IF_AFDATA_LOCK and being called within ip6_output(). 891 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an 892 implementation constraint which needs to be addressed in HEAD. 893 894 For application developers: 895 896 * The changes are broadly similar to those made for the IPv4 897 stack. 898 899 * The use of IPv4 and IPv6 multicast socket options on the same 900 socket, using mapped addresses, HAS NOT been tested or supported. 901 902 * There are a number of issues with the implementation of various 903 IPv6 multicast APIs which need to be resolved in the API surface 904 before the implementation is fully compatible with KAME userland 905 use, and these are mostly to do with interface index treatment. 906 907 * The literature available discusses the use of either the delta / ASM 908 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API 909 using setsourcefilter(3)/getsourcefilter(3). For more information 910 please refer to RFC 3768, 'Socket Interface Extensions for 911 Multicast Source Filters'. 912 913 * Applications which use the published RFC 3678 APIs should be fine. 914 915 For systems administrators: 916 917 * The mtest(8) utility has been refactored to support IPv6, in 918 addition to IPv4. Interface addresses are no longer accepted 919 as arguments, their names must be used instead. The utility 920 will map the interface name to its first IPv4 address as 921 returned by getifaddrs(3). 922 923 * The ifmcstat(8) utility has also been updated to print the MLDv2 924 endpoint state and source filter lists via sysctl(3). 925 926 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable 927 loopback of IPv6 multicast datagrams by default; it defaults to 1 928 to preserve the existing behaviour. Disabling multicast loopback is 929 recommended for optimal system performance. 930 931 * The IPv6 MROUTING code has been changed to examine this sysctl 932 instead of attempting to perform a group lookup before looping 933 back forwarded datagrams. 934 935 Bump __FreeBSD_version to 800084. 936 93720090422: 938 Implement low-level Bluetooth HCI API. 939 Bump __FreeBSD_version to 800083. 940 94120090419: 942 The layout of struct malloc_type, used by modules to register new 943 memory allocation types, has changed. Most modules will need to 944 be rebuilt or panics may be experienced. 945 Bump __FreeBSD_version to 800081. 946 94720090415: 948 Anticipate overflowing inp_flags - add inp_flags2. 949 This changes most offsets in inpcb, so checking v4 connection 950 state will require a world rebuild. 951 Bump __FreeBSD_version to 800080. 952 95320090415: 954 Add an llentry to struct route and struct route_in6. Modules 955 embedding a struct route will need to be recompiled. 956 Bump __FreeBSD_version to 800079. 957 95820090414: 959 The size of rt_metrics_lite and by extension rtentry has changed. 960 Networking administration apps will need to be recompiled. 961 The route command now supports show as an alias for get, weighting 962 of routes, sticky and nostick flags to alter the behavior of stateful 963 load balancing. 964 Bump __FreeBSD_version to 800078. 965 96620090408: 967 Do not use Giant for kbdmux(4) locking. This is wrong and 968 apparently causing more problems than it solves. This will 969 re-open the issue where interrupt handlers may race with 970 kbdmux(4) in polling mode. Typical symptoms include (but 971 not limited to) duplicated and/or missing characters when 972 low level console functions (such as gets) are used while 973 interrupts are enabled (for example geli password prompt, 974 mountroot prompt etc.). Disabling kbdmux(4) may help. 975 97620090407: 977 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed; 978 kernel modules referencing any of the above need to be recompiled. 979 Bump __FreeBSD_version to 800075. 980 98120090320: 982 GEOM_PART has become the default partition slicer for storage devices, 983 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It 984 introduces some changes: 985 986 MSDOS/EBR: the devices created from MSDOS extended partition entries 987 (EBR) can be named differently than with GEOM_MBR and are now symlinks 988 to devices with offset-based names. fstabs may need to be modified. 989 990 BSD: the "geometry does not match label" warning is harmless in most 991 cases but it points to problems in file system misalignment with 992 disk geometry. The "c" partition is now implicit, covers the whole 993 top-level drive and cannot be (mis)used by users. 994 995 General: Kernel dumps are now not allowed to be written to devices 996 whose partition types indicate they are meant to be used for file 997 systems (or, in case of MSDOS partitions, as something else than 998 the "386BSD" type). 999 1000 Most of these changes date approximately from 200812. 1001 100220090319: 1003 The uscanner(4) driver has been removed from the kernel. This follows 1004 Linux removing theirs in 2.6 and making libusb the default interface 1005 (supported by sane). 1006 100720090319: 1008 The multicast forwarding code has been cleaned up. netstat(1) 1009 only relies on KVM now for printing bandwidth upcall meters. 1010 The IPv4 and IPv6 modules are split into ip_mroute_mod and 1011 ip6_mroute_mod respectively. The config(5) options for statically 1012 compiling this code remain the same, i.e. 'options MROUTING'. 1013 101420090315: 1015 Support for the IFF_NEEDSGIANT network interface flag has been 1016 removed, which means that non-MPSAFE network device drivers are no 1017 longer supported. In particular, if_ar, if_sr, and network device 1018 drivers from the old (legacy) USB stack can no longer be built or 1019 used. 1020 102120090313: 1022 POSIX.1 Native Language Support (NLS) has been enabled in libc and 1023 a bunch of new language catalog files have also been added. 1024 This means that some common libc messages are now localized and 1025 they depend on the LC_MESSAGES environmental variable. 1026 102720090313: 1028 The k8temp(4) driver has been renamed to amdtemp(4) since 1029 support for Family 10 and Family 11 CPU families was added. 1030 103120090309: 1032 IGMPv3 and Source-Specific Multicast (SSM) have been merged 1033 to the IPv4 stack. VIMAGE hooks are in but not yet used. 1034 1035 For kernel developers, the most important changes are that the 1036 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(), 1037 and this lock has been downgraded to a non-recursive mutex. 1038 1039 Transport protocols (UDP, Raw IP) are now responsible for filtering 1040 inbound multicast traffic according to group membership and source 1041 filters. The imo_multicast_filter() KPI exists for this purpose. 1042 Transports which do not use multicast (SCTP, TCP) already reject 1043 multicast by default. Forwarding and receive performance may improve 1044 as a mutex acquisition is no longer needed in the ip_input() 1045 low-level input path. in_addmulti() and in_delmulti() are shimmed 1046 to new KPIs which exist to support SSM in-kernel. 1047 1048 For application developers, it is recommended that loopback of 1049 multicast datagrams be disabled for best performance, as this 1050 will still cause the lock to be taken for each looped-back 1051 datagram transmission. The net.inet.ip.mcast.loop sysctl may 1052 be tuned to 0 to disable loopback by default; it defaults to 1 1053 to preserve the existing behaviour. 1054 1055 For systems administrators, to obtain best performance with 1056 multicast reception and multiple groups, it is always recommended 1057 that a card with a suitably precise hash filter is used. Hash 1058 collisions will still result in the lock being taken within the 1059 transport protocol input path to check group membership. 1060 1061 If deploying FreeBSD in an environment with IGMP snooping switches, 1062 it is recommended that the net.inet.igmp.sendlocal sysctl remain 1063 enabled; this forces 224.0.0.0/24 group membership to be announced 1064 via IGMP. 1065 1066 The size of 'struct igmpstat' has changed; netstat needs to be 1067 recompiled to reflect this. 1068 Bump __FreeBSD_version to 800070. 1069 107020090309: 1071 libusb20.so.1 is now installed as libusb.so.1 and the ports system 1072 updated to use it. This requires a buildworld/installworld in order to 1073 update the library and dependencies (usbconfig, etc). Its advisable to 1074 rebuild all ports which uses libusb. More specific directions are given 1075 in the ports collection UPDATING file. Any /etc/libmap.conf entries for 1076 libusb are no longer required and can be removed. 1077 107820090302: 1079 A workaround is committed to allow the creation of System V shared 1080 memory segment of size > 2 GB on the 64-bit architectures. 1081 Due to a limitation of the existing ABI, the shm_segsz member 1082 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is 1083 wrong for large segments. Note that limits must be explicitly 1084 raised to allow such segments to be created. 1085 108620090301: 1087 The layout of struct ifnet has changed, requiring a rebuild of all 1088 network device driver modules. 1089 109020090227: 1091 The /dev handling for the new USB stack has changed, a 1092 buildworld/installworld is required for libusb20. 1093 109420090223: 1095 The new USB2 stack has now been permanently moved in and all kernel and 1096 module names reverted to their previous values (eg, usb, ehci, ohci, 1097 ums, ...). The old usb stack can be compiled in by prefixing the name 1098 with the letter 'o', the old usb modules have been removed. 1099 Updating entry 20090216 for xorg and 20090215 for libmap may still 1100 apply. 1101 110220090217: 1103 The rc.conf(5) option if_up_delay has been renamed to 1104 defaultroute_delay to better reflect its purpose. If you have 1105 customized this setting in /etc/rc.conf you need to update it to 1106 use the new name. 1107 110820090216: 1109 xorg 7.4 wants to configure its input devices via hald which does not 1110 yet work with USB2. If the keyboard/mouse does not work in xorg then 1111 add 1112 Option "AllowEmptyInput" "off" 1113 to your ServerLayout section. This will cause X to use the configured 1114 kbd and mouse sections from your xorg.conf. 1115 111620090215: 1117 The GENERIC kernels for all architectures now default to the new USB2 1118 stack. No kernel config options or code have been removed so if a 1119 problem arises please report it and optionally revert to the old USB 1120 stack. If you are loading USB kernel modules or have a custom kernel 1121 that includes GENERIC then ensure that usb names are also changed over, 1122 eg uftdi -> usb2_serial_ftdi. 1123 1124 Older programs linked against the ports libusb 0.1 need to be 1125 redirected to the new stack's libusb20. /etc/libmap.conf can 1126 be used for this: 1127 # Map old usb library to new one for usb2 stack 1128 libusb-0.1.so.8 libusb20.so.1 1129 113020090209: 1131 All USB ethernet devices now attach as interfaces under the name ueN 1132 (eg. ue0). This is to provide a predictable name as vendors often 1133 change usb chipsets in a product without notice. 1134 113520090203: 1136 The ichsmb(4) driver has been changed to require SMBus slave 1137 addresses be left-justified (xxxxxxx0b) rather than right-justified. 1138 All of the other SMBus controller drivers require left-justified 1139 slave addresses, so this change makes all the drivers provide the 1140 same interface. 1141 114220090201: 1143 INET6 statistics (struct ip6stat) was updated. 1144 netstat(1) needs to be recompiled. 1145 114620090119: 1147 NTFS has been removed from GENERIC kernel on amd64 to match 1148 GENERIC on i386. Should not cause any issues since mount_ntfs(8) 1149 will load ntfs.ko module automatically when NTFS support is 1150 actually needed, unless ntfs.ko is not installed or security 1151 level prohibits loading kernel modules. If either is the case, 1152 "options NTFS" has to be added into kernel config. 1153 115420090115: 1155 TCP Appropriate Byte Counting (RFC 3465) support added to kernel. 1156 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to 1157 800061. User space tools that rely on the size of struct tcpcb in 1158 tcp_var.h (e.g. sockstat) need to be recompiled. 1159 116020081225: 1161 ng_tty(4) module updated to match the new TTY subsystem. 1162 Due to API change, user-level applications must be updated. 1163 New API support added to mpd5 CVS and expected to be present 1164 in next mpd5.3 release. 1165 116620081219: 1167 With __FreeBSD_version 800060 the makefs tool is part of 1168 the base system (it was a port). 1169 117020081216: 1171 The afdata and ifnet locks have been changed from mutexes to 1172 rwlocks, network modules will need to be re-compiled. 1173 117420081214: 1175 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite. 1176 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated. 1177 The new code reduced struct rtentry{} by 16 bytes on 32-bit 1178 architecture and 40 bytes on 64-bit architecture. The userland 1179 applications "arp" and "ndp" have been updated accordingly. 1180 The output from "netstat -r" shows only routing entries and 1181 none of the L2 information. 1182 118320081130: 1184 __FreeBSD_version 800057 marks the switchover from the 1185 binary ath hal to source code. Users must add the line: 1186 1187 options AH_SUPPORT_AR5416 1188 1189 to their kernel config files when specifying: 1190 1191 device ath_hal 1192 1193 The ath_hal module no longer exists; the code is now compiled 1194 together with the driver in the ath module. It is now 1195 possible to tailor chip support (i.e. reduce the set of chips 1196 and thereby the code size); consult ath_hal(4) for details. 1197 119820081121: 1199 __FreeBSD_version 800054 adds memory barriers to 1200 <machine/atomic.h>, new interfaces to ifnet to facilitate 1201 multiple hardware transmit queues for cards that support 1202 them, and a lock-less ring-buffer implementation to 1203 enable drivers to more efficiently manage queueing of 1204 packets. 1205 120620081117: 1207 A new version of ZFS (version 13) has been merged to -HEAD. 1208 This version has zpool attribute "listsnapshots" off by 1209 default, which means "zfs list" does not show snapshots, 1210 and is the same as Solaris behavior. 1211 121220081028: 1213 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled. 1214 121520081009: 1216 The uhci, ohci, ehci and slhci USB Host controller drivers have 1217 been put into separate modules. If you load the usb module 1218 separately through loader.conf you will need to load the 1219 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0 1220 controller add the following to loader.conf: 1221 1222 uhci_load="YES" 1223 ehci_load="YES" 1224 122520081009: 1226 The ABI used by the PMC toolset has changed. Please keep 1227 userland (libpmc(3)) and the kernel module (hwpmc(4)) in 1228 sync. 1229 123020081009: 1231 atapci kernel module now includes only generic PCI ATA 1232 driver. AHCI driver moved to ataahci kernel module. 1233 All vendor-specific code moved into separate kernel modules: 1234 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek, 1235 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron, 1236 atamarvell, atamicron, atanational, atanetcell, atanvidia, 1237 atapromise, ataserverworks, atasiliconimage, atasis, atavia 1238 123920080820: 1240 The TTY subsystem of the kernel has been replaced by a new 1241 implementation, which provides better scalability and an 1242 improved driver model. Most common drivers have been migrated to 1243 the new TTY subsystem, while others have not. The following 1244 drivers have not yet been ported to the new TTY layer: 1245 1246 PCI/ISA: 1247 cy, digi, rc, rp, sio 1248 1249 USB: 1250 ubser, ucycom 1251 1252 Line disciplines: 1253 ng_h4, ng_tty, ppp, sl, snp 1254 1255 Adding these drivers to your kernel configuration file shall 1256 cause compilation to fail. 1257 125820080818: 1259 ntpd has been upgraded to 4.2.4p5. 1260 126120080801: 1262 OpenSSH has been upgraded to 5.1p1. 1263 1264 For many years, FreeBSD's version of OpenSSH preferred DSA 1265 over RSA for host and user authentication keys. With this 1266 upgrade, we've switched to the vendor's default of RSA over 1267 DSA. This may cause upgraded clients to warn about unknown 1268 host keys even for previously known hosts. Users should 1269 follow the usual procedure for verifying host keys before 1270 accepting the RSA key. 1271 1272 This can be circumvented by setting the "HostKeyAlgorithms" 1273 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh 1274 command line. 1275 1276 Please note that the sequence of keys offered for 1277 authentication has been changed as well. You may want to 1278 specify IdentityFile in a different order to revert this 1279 behavior. 1280 128120080713: 1282 The sio(4) driver has been removed from the i386 and amd64 1283 kernel configuration files. This means uart(4) is now the 1284 default serial port driver on those platforms as well. 1285 1286 To prevent collisions with the sio(4) driver, the uart(4) driver 1287 uses different names for its device nodes. This means the 1288 onboard serial port will now most likely be called "ttyu0" 1289 instead of "ttyd0". You may need to reconfigure applications to 1290 use the new device names. 1291 1292 When using the serial port as a boot console, be sure to update 1293 /boot/device.hints and /etc/ttys before booting the new kernel. 1294 If you forget to do so, you can still manually specify the hints 1295 at the loader prompt: 1296 1297 set hint.uart.0.at="isa" 1298 set hint.uart.0.port="0x3F8" 1299 set hint.uart.0.flags="0x10" 1300 set hint.uart.0.irq="4" 1301 boot -s 1302 130320080609: 1304 The gpt(8) utility has been removed. Use gpart(8) to partition 1305 disks instead. 1306 130720080603: 1308 The version that Linuxulator emulates was changed from 2.4.2 1309 to 2.6.16. If you experience any problems with Linux binaries 1310 please try to set sysctl compat.linux.osrelease to 2.4.2 and 1311 if it fixes the problem contact emulation mailing list. 1312 131320080525: 1314 ISDN4BSD (I4B) was removed from the src tree. You may need to 1315 update a your kernel configuration and remove relevant entries. 1316 131720080509: 1318 I have checked in code to support multiple routing tables. 1319 See the man pages setfib(1) and setfib(2). 1320 This is a hopefully backwards compatible version, 1321 but to make use of it you need to compile your kernel 1322 with options ROUTETABLES=2 (or more up to 16). 1323 132420080420: 1325 The 802.11 wireless support was redone to enable multi-bss 1326 operation on devices that are capable. The underlying device 1327 is no longer used directly but instead wlanX devices are 1328 cloned with ifconfig. This requires changes to rc.conf files. 1329 For example, change: 1330 ifconfig_ath0="WPA DHCP" 1331 to 1332 wlans_ath0=wlan0 1333 ifconfig_wlan0="WPA DHCP" 1334 see rc.conf(5) for more details. In addition, mergemaster of 1335 /etc/rc.d is highly recommended. Simultaneous update of userland 1336 and kernel wouldn't hurt either. 1337 1338 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta 1339 modules were merged into the base wlan module. All references 1340 to these modules (e.g. in kernel config files) must be removed. 1341 134220080408: 1343 psm(4) has gained write(2) support in native operation level. 1344 Arbitrary commands can be written to /dev/psm%d and status can 1345 be read back from it. Therefore, an application is responsible 1346 for status validation and error recovery. It is a no-op in 1347 other operation levels. 1348 134920080312: 1350 Support for KSE threading has been removed from the kernel. To 1351 run legacy applications linked against KSE libmap.conf may 1352 be used. The following libmap.conf may be used to ensure 1353 compatibility with any prior release: 1354 1355 libpthread.so.1 libthr.so.1 1356 libpthread.so.2 libthr.so.2 1357 libkse.so.3 libthr.so.3 1358 135920080301: 1360 The layout of struct vmspace has changed. This affects libkvm 1361 and any executables that link against libkvm and use the 1362 kvm_getprocs() function. In particular, but not exclusively, 1363 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1). 1364 The effects are minimal, but it's advisable to upgrade world 1365 nonetheless. 1366 136720080229: 1368 The latest em driver no longer has support in it for the 1369 82575 adapter, this is now moved to the igb driver. The 1370 split was done to make new features that are incompatible 1371 with older hardware easier to do. 1372 137320080220: 1374 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4), 1375 likewise the kernel option is now GEOM_LINUX_LVM. 1376 137720080211: 1378 The default NFS mount mode has changed from UDP to TCP for 1379 increased reliability. If you rely on (insecurely) NFS 1380 mounting across a firewall you may need to update your 1381 firewall rules. 1382 138320080208: 1384 Belatedly note the addition of m_collapse for compacting 1385 mbuf chains. 1386 138720080126: 1388 The fts(3) structures have been changed to use adequate 1389 integer types for their members and so to be able to cope 1390 with huge file trees. The old fts(3) ABI is preserved 1391 through symbol versioning in libc, so third-party binaries 1392 using fts(3) should still work, although they will not take 1393 advantage of the extended types. At the same time, some 1394 third-party software might fail to build after this change 1395 due to unportable assumptions made in its source code about 1396 fts(3) structure members. Such software should be fixed 1397 by its vendor or, in the worst case, in the ports tree. 1398 FreeBSD_version 800015 marks this change for the unlikely 1399 case that a portable fix is impossible. 1400 140120080123: 1402 To upgrade to -current after this date, you must be running 1403 FreeBSD not older than 6.0-RELEASE. Upgrading to -current 1404 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems. 1405 140620071128: 1407 The ADAPTIVE_GIANT kernel option has been retired because its 1408 functionality is the default now. 1409 141020071118: 1411 The AT keyboard emulation of sunkbd(4) has been turned on 1412 by default. In order to make the special symbols of the Sun 1413 keyboards driven by sunkbd(4) work under X these now have 1414 to be configured the same way as Sun USB keyboards driven 1415 by ukbd(4) (which also does AT keyboard emulation), f.e.: 1416 1417 Option "XkbLayout" "us" 1418 Option "XkbRules" "xorg" 1419 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us" 1420 142120071024: 1422 It has been decided that it is desirable to provide ABI 1423 backwards compatibility to the FreeBSD 4/5/6 versions of the 1424 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was 1425 broken with the introduction of PCI domain support (see the 1426 20070930 entry). Unfortunately, this required the ABI of 1427 PCIOCGETCONF to be broken again in order to be able to 1428 provide backwards compatibility to the old version of that 1429 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled 1430 again. As for prominent ports this affects neither pciutils 1431 nor xorg-server this time, the hal port needs to be rebuilt 1432 however. 1433 143420071020: 1435 The misnamed kthread_create() and friends have been renamed 1436 to kproc_create() etc. Many of the callers already 1437 used kproc_start().. 1438 I will return kthread_create() and friends in a while 1439 with implementations that actually create threads, not procs. 1440 Renaming corresponds with version 800002. 1441 144220071010: 1443 RELENG_7 branched. 1444 1445COMMON ITEMS: 1446 1447 General Notes 1448 ------------- 1449 Avoid using make -j when upgrading. While generally safe, there are 1450 sometimes problems using -j to upgrade. If your upgrade fails with 1451 -j, please try again without -j. From time to time in the past there 1452 have been problems using -j with buildworld and/or installworld. This 1453 is especially true when upgrading between "distant" versions (eg one 1454 that cross a major release boundary or several minor releases, or when 1455 several months have passed on the -current branch). 1456 1457 Sometimes, obscure build problems are the result of environment 1458 poisoning. This can happen because the make utility reads its 1459 environment when searching for values for global variables. To run 1460 your build attempts in an "environmental clean room", prefix all make 1461 commands with 'env -i '. See the env(1) manual page for more details. 1462 1463 When upgrading from one major version to another it is generally best 1464 to upgrade to the latest code in the currently installed branch first, 1465 then do an upgrade to the new branch. This is the best-tested upgrade 1466 path, and has the highest probability of being successful. Please try 1467 this approach before reporting problems with a major version upgrade. 1468 1469 ZFS notes 1470 --------- 1471 When upgrading the boot ZFS pool to a new version, always follow 1472 these two steps: 1473 1474 1.) recompile and reinstall the ZFS boot loader and boot block 1475 (this is part of "make buildworld" and "make installworld") 1476 1477 2.) update the ZFS boot block on your boot drive 1478 1479 The following example updates the ZFS boot block on the first 1480 partition (freebsd-boot) of a GPT partitioned drive ad0: 1481 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0" 1482 1483 Non-boot pools do not need these updates. 1484 1485 To build a kernel 1486 ----------------- 1487 If you are updating from a prior version of FreeBSD (even one just 1488 a few days old), you should follow this procedure. It is the most 1489 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld, 1490 1491 make kernel-toolchain 1492 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE 1493 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE 1494 1495 To test a kernel once 1496 --------------------- 1497 If you just want to boot a kernel once (because you are not sure 1498 if it works, or if you want to boot a known bad kernel to provide 1499 debugging information) run 1500 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel 1501 nextboot -k testkernel 1502 1503 To just build a kernel when you know that it won't mess you up 1504 -------------------------------------------------------------- 1505 This assumes you are already running a CURRENT system. Replace 1506 ${arch} with the architecture of your machine (e.g. "i386", 1507 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc). 1508 1509 cd src/sys/${arch}/conf 1510 config KERNEL_NAME_HERE 1511 cd ../compile/KERNEL_NAME_HERE 1512 make depend 1513 make 1514 make install 1515 1516 If this fails, go to the "To build a kernel" section. 1517 1518 To rebuild everything and install it on the current system. 1519 ----------------------------------------------------------- 1520 # Note: sometimes if you are running current you gotta do more than 1521 # is listed here if you are upgrading from a really old current. 1522 1523 <make sure you have good level 0 dumps> 1524 make buildworld 1525 make kernel KERNCONF=YOUR_KERNEL_HERE 1526 [1] 1527 <reboot in single user> [3] 1528 mergemaster -p [5] 1529 make installworld 1530 mergemaster -i [4] 1531 make delete-old [6] 1532 <reboot> 1533 1534 1535 To cross-install current onto a separate partition 1536 -------------------------------------------------- 1537 # In this approach we use a separate partition to hold 1538 # current's root, 'usr', and 'var' directories. A partition 1539 # holding "/", "/usr" and "/var" should be about 2GB in 1540 # size. 1541 1542 <make sure you have good level 0 dumps> 1543 <boot into -stable> 1544 make buildworld 1545 make buildkernel KERNCONF=YOUR_KERNEL_HERE 1546 <maybe newfs current's root partition> 1547 <mount current's root partition on directory ${CURRENT_ROOT}> 1548 make installworld DESTDIR=${CURRENT_ROOT} 1549 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd 1550 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT} 1551 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd 1552 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition> 1553 <reboot into current> 1554 <do a "native" rebuild/install as described in the previous section> 1555 <maybe install compatibility libraries from ports/misc/compat*> 1556 <reboot> 1557 1558 1559 To upgrade in-place from 8.x-stable to current 1560 ---------------------------------------------- 1561 <make sure you have good level 0 dumps> 1562 make buildworld [9] 1563 make kernel KERNCONF=YOUR_KERNEL_HERE [8] 1564 [1] 1565 <reboot in single user> [3] 1566 mergemaster -p [5] 1567 make installworld 1568 mergemaster -i [4] 1569 make delete-old [6] 1570 <reboot> 1571 1572 Make sure that you've read the UPDATING file to understand the 1573 tweaks to various things you need. At this point in the life 1574 cycle of current, things change often and you are on your own 1575 to cope. The defaults can also change, so please read ALL of 1576 the UPDATING entries. 1577 1578 Also, if you are tracking -current, you must be subscribed to 1579 freebsd-current@freebsd.org. Make sure that before you update 1580 your sources that you have read and understood all the recent 1581 messages there. If in doubt, please track -stable which has 1582 much fewer pitfalls. 1583 1584 [1] If you have third party modules, such as vmware, you 1585 should disable them at this point so they don't crash your 1586 system on reboot. 1587 1588 [3] From the bootblocks, boot -s, and then do 1589 fsck -p 1590 mount -u / 1591 mount -a 1592 cd src 1593 adjkerntz -i # if CMOS is wall time 1594 Also, when doing a major release upgrade, it is required that 1595 you boot into single user mode to do the installworld. 1596 1597 [4] Note: This step is non-optional. Failure to do this step 1598 can result in a significant reduction in the functionality of the 1599 system. Attempting to do it by hand is not recommended and those 1600 that pursue this avenue should read this file carefully, as well 1601 as the archives of freebsd-current and freebsd-hackers mailing lists 1602 for potential gotchas. The -U option is also useful to consider. 1603 See mergemaster(8) for more information. 1604 1605 [5] Usually this step is a noop. However, from time to time 1606 you may need to do this if you get unknown user in the following 1607 step. It never hurts to do it all the time. You may need to 1608 install a new mergemaster (cd src/usr.sbin/mergemaster && make 1609 install) after the buildworld before this step if you last updated 1610 from current before 20020224 or from -stable before 20020408. 1611 1612 [6] This only deletes old files and directories. Old libraries 1613 can be deleted by "make delete-old-libs", but you have to make 1614 sure that no program is using those libraries anymore. 1615 1616 [8] In order to have a kernel that can run the 4.x binaries needed to 1617 do an installworld, you must include the COMPAT_FREEBSD4 option in 1618 your kernel. Failure to do so may leave you with a system that is 1619 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is 1620 required to run the 5.x binaries on more recent kernels. And so on 1621 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7. 1622 1623 Make sure that you merge any new devices from GENERIC since the 1624 last time you updated your kernel config file. 1625 1626 [9] When checking out sources, you must include the -P flag to have 1627 cvs prune empty directories. 1628 1629 If CPUTYPE is defined in your /etc/make.conf, make sure to use the 1630 "?=" instead of the "=" assignment operator, so that buildworld can 1631 override the CPUTYPE if it needs to. 1632 1633 MAKEOBJDIRPREFIX must be defined in an environment variable, and 1634 not on the command line, or in /etc/make.conf. buildworld will 1635 warn if it is improperly defined. 1636FORMAT: 1637 1638This file contains a list, in reverse chronological order, of major 1639breakages in tracking -current. It is not guaranteed to be a complete 1640list of such breakages, and only contains entries since October 10, 2007. 1641If you need to see UPDATING entries from before that date, you will need 1642to fetch an UPDATING file from an older FreeBSD release. 1643 1644Copyright information: 1645 1646Copyright 1998-2009 M. Warner Losh. All Rights Reserved. 1647 1648Redistribution, publication, translation and use, with or without 1649modification, in full or in part, in any form or format of this 1650document are permitted without further permission from the author. 1651 1652THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR 1653IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 1654WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 1655DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT, 1656INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 1657(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 1658SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 1659HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 1660STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 1661IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 1662POSSIBILITY OF SUCH DAMAGE. 1663 1664Contact Warner Losh if you have any questions about your use of 1665this document. 1666 1667$FreeBSD: head/UPDATING 241600 2012-10-16 01:10:43Z gonzo $ 1668