UPDATING revision 241515
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 2720121013: 28 The GNU sort(1) program has been removed since the BSD-licensed 29 sort(1) has been the default for quite some time and no serious 30 problems have been reported. The corresponding WITH_GNU_SORT 31 knob has also gone. 32 3320121006: 34 The pfil(9) API/ABI for AF_INET family has been changed. Packet 35 filtering modules: pf(4), ipfw(4), ipfilter(4) need to be recompiled 36 with new kernel. 37 3820121001: 39 The net80211(4) ABI has been changed to allow for improved driver 40 PS-POLL and power-save support. All wireless drivers need to be 41 recompiled to work with the new kernel. 42 4320120913: 44 The random(4) support for the VIA hardware random number 45 generator (`PADLOCK') is no longer enabled unconditionally. 46 Add the PADLOCK_RNG option in the custom kernel config if 47 needed. The GENERIC kernels on i386 and amd64 do include the 48 option, so the change only affects the custom kernel 49 configurations. 50 5120120908: 52 The pf(4) packet filter ABI has been changed. pfctl(8) and 53 snmp_pf module need to be recompiled to work with new kernel. 54 5520120828: 56 A new ZFS feature flag "com.delphix:empty_bpobj" has been merged 57 to -HEAD. Pools that have empty_bpobj in active state can not be 58 imported read-write with ZFS implementations that do not support 59 this feature. For more information read the zpool-features(5) 60 manual page. 61 6220120727: 63 The sparc64 ZFS loader has been changed to no longer try to auto- 64 detect ZFS providers based on diskN aliases but now requires these 65 to be explicitly listed in the OFW boot-device environment variable. 66 6720120712: 68 The OpenSSL has been upgraded to 1.0.1c. Any binaries requiring 69 libcrypto.so.6 or libssl.so.6 must be recompiled. Also, there are 70 configuration changes. Make sure to merge /etc/ssl/openssl.cnf. 71 7220120712: 73 The following sysctls and tunables have been renamed for consistency 74 with other variables: 75 kern.cam.da.da_send_ordered -> kern.cam.da.send_ordered 76 kern.cam.ada.ada_send_ordered -> kern.cam.ada.send_ordered 77 7820120628: 79 The sort utility has been replaced with BSD sort. For now, GNU sort 80 is also available as "gnusort" or the default can be set back to 81 GNU sort by setting WITH_GNU_SORT. In this case, BSD sort will be 82 installed as "bsdsort". 83 8420120611: 85 A new version of ZFS (pool version 5000) has been merged to -HEAD. 86 Starting with this version the old system of ZFS pool versioning 87 is superseded by "feature flags". This concept enables forward 88 compatibility against certain future changes in functionality of ZFS 89 pools. The first read-only compatible "feature flag" for ZFS pools 90 is named "com.delphix:async_destroy". For more information 91 read the new zpool-features(5) manual page. 92 Please refer to the "ZFS notes" section of this file for information 93 on upgrading boot ZFS pools. 94 9520120417: 96 The malloc(3) implementation embedded in libc now uses sources imported 97 as contrib/jemalloc. The most disruptive API change is to 98 /etc/malloc.conf. If your system has an old-style /etc/malloc.conf, 99 delete it prior to installworld, and optionally re-create it using the 100 new format after rebooting. See malloc.conf(5) for details 101 (specifically the TUNING section and the "opt.*" entries in the MALLCTL 102 NAMESPACE section). 103 10420120328: 105 Big-endian MIPS TARGET_ARCH values no longer end in "eb". mips64eb 106 is now spelled mips64. mipsn32eb is now spelled mipsn32. mipseb is 107 now spelled mips. This is to aid compatibility with third-party 108 software that expects this naming scheme in uname(3). Little-endian 109 settings are unchanged. 110 11120120306: 112 Disable by default the option VFS_ALLOW_NONMPSAFE for all supported 113 platforms. 114 11520120229: 116 Now unix domain sockets behave "as expected" on nullfs(5). Previously 117 nullfs(5) did not pass through all behaviours to the underlying layer, 118 as a result if we bound to a socket on the lower layer we could connect 119 only to the lower path; if we bound to the upper layer we could connect 120 only to the upper path. The new behavior is one can connect to both the 121 lower and the upper paths regardless what layer path one binds to. 122 12320120211: 124 The getifaddrs upgrade path broken with 20111215 has been restored. 125 If you have upgraded in between 20111215 and 20120209 you need to 126 recompile libc again with your kernel. You still need to recompile 127 world to be able to configure CARP but this restriction already 128 comes from 20111215. 129 13020120114: 131 The set_rcvar() function has been removed from /etc/rc.subr. All 132 base and ports rc.d scripts have been updated, so if you have a 133 port installed with a script in /usr/local/etc/rc.d you can either 134 hand-edit the rcvar= line, or reinstall the port. 135 136 An easy way to handle the mass-update of /etc/rc.d: 137 rm /etc/rc.d/* && mergemaster -i 138 13920120109: 140 panic(9) now stops other CPUs in the SMP systems, disables interrupts 141 on the current CPU and prevents other threads from running. 142 This behavior can be reverted using the kern.stop_scheduler_on_panic 143 tunable/sysctl. 144 The new behavior can be incompatible with kern.sync_on_panic. 145 14620111215: 147 The carp(4) facility has been changed significantly. Configuration 148 of the CARP protocol via ifconfig(8) has changed, as well as format 149 of CARP events submitted to devd(8) has changed. See manual pages 150 for more information. The arpbalance feature of carp(4) is currently 151 not supported anymore. 152 153 Size of struct in_aliasreq, struct in6_aliasreq has changed. User 154 utilities using SIOCAIFADDR, SIOCAIFADDR_IN6, e.g. ifconfig(8), 155 need to be recompiled. 156 15720111122: 158 The acpi_wmi(4) status device /dev/wmistat has been renamed to 159 /dev/wmistat0. 160 16120111108: 162 The option VFS_ALLOW_NONMPSAFE option has been added in order to 163 explicitely support non-MPSAFE filesystems. 164 It is on by default for all supported platform at this present 165 time. 166 16720111101: 168 The broken amd(4) driver has been replaced with esp(4) in the amd64, 169 i386 and pc98 GENERIC kernel configuration files. 170 17120110930: 172 sysinstall has been removed 173 17420110923: 175 The stable/9 branch created in subversion. This corresponds to the 176 RELENG_9 branch in CVS. 177 17820110913: 179 This commit modifies vfs_register() so that it uses a hash 180 calculation to set vfc_typenum, which is enabled by default. 181 The first time a system is booted after this change, the 182 vfc_typenum values will change for all file systems. The 183 main effect of this is a change to the NFS server file handles 184 for file systems that use vfc_typenum in their fsid, such as ZFS. 185 It will, however, prevent vfc_typenum from changing when file 186 systems are loaded in a different order for subsequent reboots. 187 To disable this, you can set vfs.typenumhash=0 in /boot/loader.conf 188 until you are ready to remount all NFS clients after a reboot. 189 19020110828: 191 Bump the shared library version numbers for libraries that 192 do not use symbol versioning, have changed the ABI compared 193 to stable/8 and which shared library version was not bumped. 194 Done as part of 9.0-RELEASE cycle. 195 19620110815: 197 During the merge of Capsicum features, the fget(9) KPI was modified. 198 This may require the rebuilding of out-of-tree device drivers -- 199 issues have been reported specifically with the nVidia device driver. 200 __FreeBSD_version is bumped to 900041. 201 202 Also, there is a period between 20110811 and 20110814 where the 203 special devices /dev/{stdin,stdout,stderr} did not work correctly. 204 Building world from a kernel during that window may not work. 205 20620110628: 207 The packet filter (pf) code has been updated to OpenBSD 4.5. 208 You need to update userland tools to be in sync with kernel. 209 This update breaks backward compatibility with earlier pfsync(4) 210 versions. Care must be taken when updating redundant firewall setups. 211 21220110608: 213 The following sysctls and tunables are retired on x86 platforms: 214 machdep.hlt_cpus 215 machdep.hlt_logical_cpus 216 The following sysctl is retired: 217 machdep.hyperthreading_allowed 218 The sysctls were supposed to provide a way to dynamically offline and 219 online selected CPUs on x86 platforms, but the implementation has not 220 been reliable especially with SCHED_ULE scheduler. 221 machdep.hyperthreading_allowed tunable is still available to ignore 222 hyperthreading CPUs at OS level. 223 Individual CPUs can be disabled using hint.lapic.X.disabled tunable, 224 where X is an APIC ID of a CPU. Be advised, though, that disabling 225 CPUs in non-uniform fashion will result in non-uniform topology and 226 may lead to sub-optimal system performance with SCHED_ULE, which is 227 a default scheduler. 228 22920110607: 230 cpumask_t type is retired and cpuset_t is used in order to describe 231 a mask of CPUs. 232 23320110531: 234 Changes to ifconfig(8) for dynamic address family detection mandate 235 that you are running a kernel of 20110525 or later. Make sure to 236 follow the update procedure to boot a new kernel before installing 237 world. 238 23920110513: 240 Support for sun4v architecture is officially dropped 241 24220110503: 243 Several KPI breaking changes have been committed to the mii(4) layer, 244 the PHY drivers and consequently some Ethernet drivers using mii(4). 245 This means that miibus.ko and the modules of the affected Ethernet 246 drivers need to be recompiled. 247 248 Note to kernel developers: Given that the OUI bit reversion problem 249 was fixed as part of these changes all mii(4) commits related to OUIs, 250 i.e. to sys/dev/mii/miidevs, PHY driver probing and vendor specific 251 handling, no longer can be merged verbatim to stable/8 and previous 252 branches. 253 25420110430: 255 Users of the Atheros AR71xx SoC code now need to add 'device ar71xx_pci' 256 into their kernel configurations along with 'device pci'. 257 25820110427: 259 The default NFS client is now the new NFS client, so fstype "newnfs" 260 is now "nfs" and the regular/old NFS client is now fstype "oldnfs". 261 Although mounts via fstype "nfs" will usually work without userland 262 changes, it is recommended that the mount(8) and mount_nfs(8) 263 commands be rebuilt from sources and that a link to mount_nfs called 264 mount_oldnfs be created. The new client is compiled into the 265 kernel with "options NFSCL" and this is needed for diskless root 266 file systems. The GENERIC kernel configs have been changed to use 267 NFSCL and NFSD (the new server) instead of NFSCLIENT and NFSSERVER. 268 To use the regular/old client, you can "mount -t oldnfs ...". For 269 a diskless root file system, you must also include a line like: 270 271 vfs.root.mountfrom="oldnfs:" 272 273 in the boot/loader.conf on the root fs on the NFS server to make 274 a diskless root fs use the old client. 275 27620110424: 277 The GENERIC kernels for all architectures now default to the new 278 CAM-based ATA stack. It means that all legacy ATA drivers were 279 removed and replaced by respective CAM drivers. If you are using 280 ATA device names in /etc/fstab or other places, make sure to update 281 them respectively (adX -> adaY, acdX -> cdY, afdX -> daY, astX -> saY, 282 where 'Y's are the sequential numbers starting from zero for each type 283 in order of detection, unless configured otherwise with tunables, 284 see cam(4)). There will be symbolic links created in /dev/ to map 285 old adX devices to the respective adaY. They should provide basic 286 compatibility for file systems mounting in most cases, but they do 287 not support old user-level APIs and do not have respective providers 288 in GEOM. Consider using updated management tools with new device names. 289 290 It is possible to load devices ahci, ata, siis and mvs as modules, 291 but option ATA_CAM should remain in kernel configuration to make ata 292 module work as CAM driver supporting legacy ATA controllers. Device ata 293 still can be used in modular fashion (atacore + ...). Modules atadisk 294 and atapi* are not used and won't affect operation in ATA_CAM mode. 295 Note that to use CAM-based ATA kernel should include CAM devices 296 scbus, pass, da (or explicitly ada), cd and optionally others. All of 297 them are parts of the cam module. 298 299 ataraid(4) functionality is now supported by the RAID GEOM class. 300 To use it you can load geom_raid kernel module and use graid(8) tool 301 for management. Instead of /dev/arX device names, use /dev/raid/rX. 302 303 No kernel config options or code have been removed, so if a problem 304 arises, please report it and optionally revert to the old ATA stack. 305 In order to do it you can remove from the kernel config: 306 options ATA_CAM 307 device ahci 308 device mvs 309 device siis 310 , and instead add back: 311 device atadisk # ATA disk drives 312 device ataraid # ATA RAID drives 313 device atapicd # ATAPI CDROM drives 314 device atapifd # ATAPI floppy drives 315 device atapist # ATAPI tape drives 316 31720110423: 318 The default NFS server has been changed to the new server, which 319 was referred to as the experimental server. If you need to switch 320 back to the old NFS server, you must now put the "-o" option on 321 both the mountd and nfsd commands. This can be done using the 322 mountd_flags and nfs_server_flags rc.conf variables until an 323 update to the rc scripts is committed, which is coming soon. 324 32520110418: 326 The GNU Objective-C runtime library (libobjc), and other Objective-C 327 related components have been removed from the base system. If you 328 require an Objective-C library, please use one of the available ports. 329 33020110331: 331 ath(4) has been split into bus- and device- modules. if_ath contains 332 the HAL, the TX rate control and the network device code. if_ath_pci 333 contains the PCI bus glue. For Atheros MIPS embedded systems, if_ath_ahb 334 contains the AHB glue. Users need to load both if_ath_pci and if_ath 335 in order to use ath on everything else. 336 337 TO REPEAT: if_ath_ahb is not needed for normal users. Normal users only 338 need to load if_ath and if_ath_pci for ath(4) operation. 339 34020110314: 341 As part of the replacement of sysinstall, the process of building 342 release media has changed significantly. For details, please re-read 343 release(7), which has been updated to reflect the new build process. 344 34520110218: 346 GNU binutils 2.17.50 (as of 2007-07-03) has been merged to -HEAD. This 347 is the last available version under GPLv2. It brings a number of new 348 features, such as support for newer x86 CPU's (with SSE-3, SSSE-3, SSE 349 4.1 and SSE 4.2), better support for powerpc64, a number of new 350 directives, and lots of other small improvements. See the ChangeLog 351 file in contrib/binutils for the full details. 352 35320110218: 354 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868 355 compliant, and will now use half of hash for authentication. 356 This will break interoperability with all stacks (including all 357 actual FreeBSD versions) who implement 358 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for 359 authentication). 360 The only workaround with such peers is to use another HMAC 361 algorithm for IPsec ("phase 2") authentication. 362 36320110207: 364 Remove the uio_yield prototype and symbol. This function has 365 been misnamed since it was introduced and should not be 366 globally exposed with this name. The equivalent functionality 367 is now available using kern_yield(curthread->td_user_pri). 368 The function remains undocumented. 369 37020110112: 371 A SYSCTL_[ADD_]UQUAD was added for unsigned uint64_t pointers, 372 symmetric with the existing SYSCTL_[ADD_]QUAD. Type checking 373 for scalar sysctls is defined but disabled. Code that needs 374 UQUAD to pass the type checking that must compile on older 375 systems where the define is not present can check against 376 __FreeBSD_version >= 900030. 377 378 The system dialog(1) has been replaced with a new version previously 379 in ports as devel/cdialog. dialog(1) is mostly command-line compatible 380 with the previous version, but the libdialog associated with it has 381 a largely incompatible API. As such, the original version of libdialog 382 will be kept temporarily as libodialog, until its base system consumers 383 are replaced or updated. Bump __FreeBSD_version to 900030. 384 38520110103: 386 If you are trying to run make universe on a -stable system, and you get 387 the following warning: 388 "Makefile", line 356: "Target architecture for i386/conf/GENERIC 389 unknown. config(8) likely too old." 390 or something similar to it, then you must upgrade your -stable system 391 to 8.2-Release or newer (really, any time after r210146 7/15/2010 in 392 stable/8) or build the config from the latest stable/8 branch and 393 install it on your system. 394 395 Prior to this date, building a current universe on 8-stable system from 396 between 7/15/2010 and 1/2/2011 would result in a weird shell parsing 397 error in the first kernel build phase. A new config on those old 398 systems will fix that problem for older versions of -current. 399 40020101228: 401 The TCP stack has been modified to allow Khelp modules to interact with 402 it via helper hook points and store per-connection data in the TCP 403 control block. Bump __FreeBSD_version to 900029. User space tools that 404 rely on the size of struct tcpcb in tcp_var.h (e.g. sockstat) need to 405 be recompiled. 406 40720101114: 408 Generic IEEE 802.3 annex 31B full duplex flow control support has been 409 added to mii(4) and bge(4), bce(4), msk(4), nfe(4) and stge(4) along 410 with brgphy(4), e1000phy(4) as well as ip1000phy() have been converted 411 to take advantage of it instead of using custom implementations. This 412 means that these drivers now no longer unconditionally advertise 413 support for flow control but only do so if flow control is a selected 414 media option. This was implemented in the generic support that way in 415 order to allow flow control to be switched on and off via ifconfig(8) 416 with the PHY specific default to typically off in order to protect 417 from unwanted effects. Consequently, if you used flow control with 418 one of the above mentioned drivers you now need to explicitly enable 419 it, for example via: 420 ifconfig bge0 media auto mediaopt flowcontrol 421 422 Along with the above mentioned changes generic support for setting 423 1000baseT master mode also has been added and brgphy(4), ciphy(4), 424 e1000phy(4) as well as ip1000phy(4) have been converted to take 425 advantage of it. This means that these drivers now no longer take the 426 link0 parameter for selecting master mode but the master media option 427 has to be used instead, for example like in the following: 428 ifconfig bge0 media 1000baseT mediaopt full-duplex,master 429 430 Selection of master mode now is also available with all other PHY 431 drivers supporting 1000baseT. 432 43320101111: 434 The TCP stack has received a significant update to add support for 435 modularised congestion control and generally improve the clarity of 436 congestion control decisions. Bump __FreeBSD_version to 900025. User 437 space tools that rely on the size of struct tcpcb in tcp_var.h (e.g. 438 sockstat) need to be recompiled. 439 44020101002: 441 The man(1) utility has been replaced by a new version that no longer 442 uses /etc/manpath.config. Please consult man.conf(5) for how to 443 migrate local entries to the new format. 444 44520100928: 446 The copyright strings printed by login(1) and sshd(8) at the time of a 447 new connection have been removed to follow other operating systems and 448 upstream sshd. 449 45020100915: 451 A workaround for a fixed ld bug has been removed in kernel code, 452 so make sure that your system ld is built from sources after 453 revision 210245 from 2010-07-19 (r211583 if building head kernel 454 on stable/8, r211584 for stable/7; both from 2010-08-21). 455 A symptom of incorrect ld version is different addresses for 456 set_pcpu section and __start_set_pcpu symbol in kernel and/or modules. 457 45820100913: 459 The $ipv6_prefer variable in rc.conf(5) has been split into 460 $ip6addrctl_policy and $ipv6_activate_all_interfaces. 461 462 The $ip6addrctl_policy is a variable to choose a pre-defined 463 address selection policy set by ip6addrctl(8). A value 464 "ipv4_prefer", "ipv6_prefer" or "AUTO" can be specified. The 465 default is "AUTO". 466 467 The $ipv6_activate_all_interfaces specifies whether IFDISABLED 468 flag (see an entry of 20090926) is set on an interface with no 469 corresponding $ifconfig_IF_ipv6 line. The default is "NO" for 470 security reason. If you want IPv6 link-local address on all 471 interfaces by default, set this to "YES". 472 473 The old ipv6_prefer="YES" is equivalent to 474 ipv6_activate_all_interfaces="YES" and 475 ip6addrctl_policy="ipv6_prefer". 476 47720100913: 478 DTrace has grown support for userland tracing. Due to this, DTrace is 479 now i386 and amd64 only. 480 dtruss(1) is now installed by default on those systems and a new 481 kernel module is needed for userland tracing: fasttrap. 482 No changes to your kernel config file are necessary to enable 483 userland tracing, but you might consider adding 'STRIP=' and 484 'CFLAGS+=-fno-omit-frame-pointer' to your make.conf if you want 485 to have informative userland stack traces in DTrace (ustack). 486 48720100725: 488 The acpi_aiboost(4) driver has been removed in favor of the new 489 aibs(4) driver. You should update your kernel configuration file. 490 49120100722: 492 BSD grep has been imported to the base system and it is built by 493 default. It is completely BSD licensed, highly GNU-compatible, uses 494 less memory than its GNU counterpart and has a small codebase. 495 However, it is slower than its GNU counterpart, which is mostly 496 noticeable for larger searches, for smaller ones it is measurable 497 but not significant. The reason is complex, the most important factor 498 is that we lack a modern and efficient regex library and GNU 499 overcomes this by optimizing the searches internally. Future work 500 on improving the regex performance is planned, for the meantime, 501 users that need better performance, can build GNU grep instead by 502 setting the WITH_GNU_GREP knob. 503 50420100713: 505 Due to the import of powerpc64 support, all existing powerpc kernel 506 configuration files must be updated with a machine directive like this: 507 machine powerpc powerpc 508 509 In addition, an updated config(8) is required to build powerpc kernels 510 after this change. 511 51220100713: 513 A new version of ZFS (version 15) has been merged to -HEAD. 514 This version uses a python library for the following subcommands: 515 zfs allow, zfs unallow, zfs groupspace, zfs userspace. 516 For full functionality of these commands the following port must 517 be installed: sysutils/py-zfs 518 51920100429: 520 'vm_page's are now hashed by physical address to an array of mutexes. 521 Currently this is only used to serialize access to hold_count. Over 522 time the page queue mutex will be peeled away. This changes the size 523 of pmap on every architecture. And requires all callers of vm_page_hold 524 and vm_page_unhold to be updated. 525 52620100402: 527 WITH_CTF can now be specified in src.conf (not recommended, there 528 are some problems with static executables), make.conf (would also 529 affect ports which do not use GNU make and do not override the 530 compile targets) or in the kernel config (via "makeoptions 531 WITH_CTF=yes"). 532 When WITH_CTF was specified there before this was silently ignored, 533 so make sure that WITH_CTF is not used in places which could lead 534 to unwanted behavior. 535 53620100311: 537 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32 538 to allow 32-bit compatibility on non-x86 platforms. All kernel 539 configurations on amd64 and ia64 platforms using these options must 540 be modified accordingly. 541 54220100113: 543 The utmp user accounting database has been replaced with utmpx, 544 the user accounting interface standardized by POSIX. 545 Unfortunately the semantics of utmp and utmpx don't match, 546 making it practically impossible to support both interfaces. 547 The user accounting database is used by tools like finger(1), 548 last(1), talk(1), w(1) and ac(8). 549 550 All applications in the base system use utmpx. This means only 551 local binaries (e.g. from the ports tree) may still use these 552 utmp database files. These applications must be rebuilt to make 553 use of utmpx. 554 555 After the system has been upgraded, it is safe to remove the old 556 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*), 557 assuming their contents is of no importance anymore. Old wtmp 558 databases can only be used by last(1) and ac(8) after they have 559 been converted to the new format using wtmpcvt(1). 560 56120100108: 562 Introduce the kernel thread "deadlock resolver" (which can be enabled 563 via the DEADLKRES option, see NOTES for more details) and the 564 sleepq_type() function for sleepqueues. 565 56620091202: 567 The rc.firewall and rc.firewall6 were unified, and 568 rc.firewall6 and rc.d/ip6fw were removed. 569 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc 570 variables are obsoleted. Instead, the following new rc 571 variables are added to rc.d/ipfw: 572 573 firewall_client_net_ipv6, firewall_simple_iif_ipv6, 574 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6, 575 firewall_simple_onet_ipv6, firewall_trusted_ipv6 576 577 The meanings correspond to the relevant IPv4 variables. 578 57920091125: 580 8.0-RELEASE. 581 58220091113: 583 The default terminal emulation for syscons(4) has been changed 584 from cons25 to xterm on all platforms except pc98. This means 585 that the /etc/ttys file needs to be updated to ensure correct 586 operation of applications on the console. 587 588 The terminal emulation style can be toggled per window by using 589 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration 590 options can be used to change the compile-time default back to 591 cons25. 592 593 To prevent graphical artifacts, make sure the TERM environment 594 variable is set to match the terminal emulation that is being 595 performed by syscons(4). 596 59720091109: 598 The layout of the structure ieee80211req_scan_result has changed. 599 Applications that require wireless scan results (e.g. ifconfig(8)) 600 from net80211 need to be recompiled. 601 602 Applications such as wpa_supplicant(8) may require a full world 603 build without using NO_CLEAN in order to get synchronized with the 604 new structure. 605 60620091025: 607 The iwn(4) driver has been updated to support the 5000 and 5150 series. 608 There's one kernel module for each firmware. Adding "device iwnfw" 609 to the kernel configuration file means including all three firmware 610 images inside the kernel. If you want to include just the one for 611 your wireless card, use the devices iwn4965fw, iwn5000fw or 612 iwn5150fw. 613 61420090926: 615 The rc.d/network_ipv6, IPv6 configuration script has been integrated 616 into rc.d/netif. The changes are the following: 617 618 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF 619 for IPv4. For aliases, $ifconfig_IF_aliasN should be used. 620 Note that both variables need the "inet6" keyword at the head. 621 622 Do not set $ipv6_network_interfaces manually if you do not 623 understand what you are doing. It is not needed in most cases. 624 625 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but 626 they are obsolete. 627 628 2. $ipv6_enable is obsolete. Use $ipv6_prefer and 629 "inet6 accept_rtadv" keyword in ifconfig(8) instead. 630 631 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and 632 all configured interfaces have "inet6 accept_rtadv" in the 633 $ifconfig_IF_ipv6. These are for backward compatibility. 634 635 3. A new variable $ipv6_prefer has been added. If NO, IPv6 636 functionality of interfaces with no corresponding 637 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag, 638 and the default address selection policy of ip6addrctl(8) 639 is the IPv4-preferred one (see rc.d/ip6addrctl for more details). 640 Note that if you want to configure IPv6 functionality on the 641 disabled interfaces after boot, first you need to clear the flag by 642 using ifconfig(8) like: 643 644 ifconfig em0 inet6 -ifdisabled 645 646 If YES, the default address selection policy is set as 647 IPv6-preferred. 648 649 The default value of $ipv6_prefer is NO. 650 651 4. If your system need to receive Router Advertisement messages, 652 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8) 653 scripts automatically invoke rtsol(8) when the interface becomes 654 UP. The Router Advertisement messages are used for SLAAC 655 (State-Less Address AutoConfiguration). 656 65720090922: 658 802.11s D3.03 support was committed. This is incompatible with the 659 previous code, which was based on D3.0. 660 66120090912: 662 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value 663 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to 664 control whether accepting Router Advertisement messages or not. 665 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and 666 a sysctl variable net.inet6.ip6.auto_linklocal is its default value. 667 The ifconfig(8) utility now supports these flags. 668 66920090910: 670 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for 671 mount(8) and -a option for df(1) to see them. 672 67320090825: 674 The old tunable hw.bus.devctl_disable has been superseded by 675 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be 676 replaced by hw.bus.devctl_queue=0. The default for this new tunable 677 is 1000. 678 67920090813: 680 Remove the option STOP_NMI. The default action is now to use NMI only 681 for KDB via the newly introduced function stop_cpus_hard() and 682 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64. 683 68420090803: 685 The stable/8 branch created in subversion. This corresponds to the 686 RELENG_8 branch in CVS. 687 68820090719: 689 Bump the shared library version numbers for all libraries that do not 690 use symbol versioning as part of the 8.0-RELEASE cycle. Bump 691 __FreeBSD_version to 800105. 692 69320090714: 694 Due to changes in the implementation of virtual network stack support, 695 all network-related kernel modules must be recompiled. As this change 696 breaks the ABI, bump __FreeBSD_version to 800104. 697 69820090713: 699 The TOE interface to the TCP syncache has been modified to remove 700 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. 701 The cxgb driver is the only TOE consumer affected by this change, and 702 needs to be recompiled along with the kernel. As this change breaks 703 the ABI, bump __FreeBSD_version to 800103. 704 70520090712: 706 Padding has been added to struct tcpcb, sackhint and tcpstat in 707 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst 708 maintaining the ABI. However, this change breaks the ABI, so bump 709 __FreeBSD_version to 800102. User space tools that rely on the size of 710 any of these structs (e.g. sockstat) need to be recompiled. 711 71220090630: 713 The NFS_LEGACYRPC option has been removed along with the old kernel 714 RPC implementation that this option selected. Kernel configurations 715 may need to be adjusted. 716 71720090629: 718 The network interface device nodes at /dev/net/<interface> have been 719 removed. All ioctl operations can be performed the normal way using 720 routing sockets. The kqueue functionality can generally be replaced 721 with routing sockets. 722 72320090628: 724 The documentation from the FreeBSD Documentation Project (Handbook, 725 FAQ, etc.) is now installed via packages by sysinstall(8) and under 726 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc. 727 72820090624: 729 The ABI of various structures related to the SYSV IPC API have been 730 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel 731 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to 732 800100. 733 73420090622: 735 Layout of struct vnet has changed as routing related variables were 736 moved to their own Vimage module. Modules need to be recompiled. Bump 737 __FreeBSD_version to 800099. 738 73920090619: 740 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024 741 respectively. As long as no more than 16 groups per process are used, 742 no changes should be visible. When more than 16 groups are used, old 743 binaries may fail if they call getgroups() or getgrouplist() with 744 statically sized storage. Recompiling will work around this, but 745 applications should be modified to use dynamically allocated storage 746 for group arrays as POSIX.1-2008 does not cap an implementation's 747 number of supported groups at NGROUPS_MAX+1 as previous versions did. 748 749 NFS and portalfs mounts may also be affected as the list of groups is 750 truncated to 16. Users of NFS who use more than 16 groups, should 751 take care that negative group permissions are not used on the exported 752 file systems as they will not be reliable unless a GSSAPI based 753 authentication method is used. 754 75520090616: 756 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This 757 option compiles in the support for adaptive spinning for lockmgrs 758 which want to enable it. The lockinit() function now accepts the flag 759 LK_ADAPTIVE in order to make the lock object subject to adaptive 760 spinning when both held in write and read mode. 761 76220090613: 763 The layout of the structure returned by IEEE80211_IOC_STA_INFO has 764 changed. User applications that use this ioctl need to be rebuilt. 765 76620090611: 767 The layout of struct thread has changed. Kernel and modules need to 768 be rebuilt. 769 77020090608: 771 The layout of structs ifnet, domain, protosw and vnet_net has changed. 772 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097. 773 77420090602: 775 window(1) has been removed from the base system. It can now be 776 installed from ports. The port is called misc/window. 777 77820090601: 779 The way we are storing and accessing `routing table' entries has 780 changed. Programs reading the FIB, like netstat, need to be 781 re-compiled. 782 78320090601: 784 A new netisr implementation has been added for FreeBSD 8. Network 785 file system modules, such as igmp, ipdivert, and others, should be 786 rebuilt. 787 Bump __FreeBSD_version to 800096. 788 78920090530: 790 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no 791 more valid. 792 79320090530: 794 Add VOP_ACCESSX(9). File system modules need to be rebuilt. 795 Bump __FreeBSD_version to 800094. 796 79720090529: 798 Add mnt_xflag field to 'struct mount'. File system modules need to be 799 rebuilt. 800 Bump __FreeBSD_version to 800093. 801 80220090528: 803 The compiling option ADAPTIVE_SX has been retired while it has been 804 introduced the option NO_ADAPTIVE_SX which handles the reversed logic. 805 The KPI for sx_init_flags() changes as accepting flags: 806 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has 807 been introduced in order to handle the reversed logic. 808 Bump __FreeBSD_version to 800092. 809 81020090527: 811 Add support for hierarchical jails. Remove global securelevel. 812 Bump __FreeBSD_version to 800091. 813 81420090523: 815 The layout of struct vnet_net has changed, therefore modules 816 need to be rebuilt. 817 Bump __FreeBSD_version to 800090. 818 81920090523: 820 The newly imported zic(8) produces a new format in the output. Please 821 run tzsetup(8) to install the newly created data to /etc/localtime. 822 82320090520: 824 The sysctl tree for the usb stack has renamed from hw.usb2.* to 825 hw.usb.* and is now consistent again with previous releases. 826 82720090520: 828 802.11 monitor mode support was revised and driver api's were changed. 829 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead 830 of DLT_IEEE802_11. No user-visible data structures were changed but 831 applications that use DLT_IEEE802_11 may require changes. 832 Bump __FreeBSD_version to 800088. 833 83420090430: 835 The layout of the following structs has changed: sysctl_oid, 836 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet, 837 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or 838 panics may be experienced. World rebuild is required for 839 correctly checking networking state from userland. 840 Bump __FreeBSD_version to 800085. 841 84220090429: 843 MLDv2 and Source-Specific Multicast (SSM) have been merged 844 to the IPv6 stack. VIMAGE hooks are in but not yet used. 845 The implementation of SSM within FreeBSD's IPv6 stack closely 846 follows the IPv4 implementation. 847 848 For kernel developers: 849 850 * The most important changes are that the ip6_output() and 851 ip6_input() paths no longer take the IN6_MULTI_LOCK, 852 and this lock has been downgraded to a non-recursive mutex. 853 854 * As with the changes to the IPv4 stack to support SSM, filtering 855 of inbound multicast traffic must now be performed by transport 856 protocols within the IPv6 stack. This does not apply to TCP and 857 SCTP, however, it does apply to UDP in IPv6 and raw IPv6. 858 859 * The KPIs used by IPv6 multicast are similar to those used by 860 the IPv4 stack, with the following differences: 861 * im6o_mc_filter() is analogous to imo_multicast_filter(). 862 * The legacy KAME entry points in6_joingroup and in6_leavegroup() 863 are shimmed to in6_mc_join() and in6_mc_leave() respectively. 864 * IN6_LOOKUP_MULTI() has been deprecated and removed. 865 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs 866 for MLDv1 have an additional 'timer' argument which is used to 867 jitter the initial membership report for the solicited-node 868 multicast membership on-link. 869 * This is not strictly needed for MLDv2, which already jitters 870 its report transmissions. However, the 'timer' argument is 871 preserved in case MLDv1 is active on the interface. 872 873 * The KAME linked-list based IPv6 membership implementation has 874 been refactored to use a vector similar to that used by the IPv4 875 stack. 876 Code which maintains a list of its own multicast memberships 877 internally, e.g. carp, has been updated to reflect the new 878 semantics. 879 880 * There is a known Lock Order Reversal (LOR) due to in6_setscope() 881 acquiring the IF_AFDATA_LOCK and being called within ip6_output(). 882 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an 883 implementation constraint which needs to be addressed in HEAD. 884 885 For application developers: 886 887 * The changes are broadly similar to those made for the IPv4 888 stack. 889 890 * The use of IPv4 and IPv6 multicast socket options on the same 891 socket, using mapped addresses, HAS NOT been tested or supported. 892 893 * There are a number of issues with the implementation of various 894 IPv6 multicast APIs which need to be resolved in the API surface 895 before the implementation is fully compatible with KAME userland 896 use, and these are mostly to do with interface index treatment. 897 898 * The literature available discusses the use of either the delta / ASM 899 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API 900 using setsourcefilter(3)/getsourcefilter(3). For more information 901 please refer to RFC 3768, 'Socket Interface Extensions for 902 Multicast Source Filters'. 903 904 * Applications which use the published RFC 3678 APIs should be fine. 905 906 For systems administrators: 907 908 * The mtest(8) utility has been refactored to support IPv6, in 909 addition to IPv4. Interface addresses are no longer accepted 910 as arguments, their names must be used instead. The utility 911 will map the interface name to its first IPv4 address as 912 returned by getifaddrs(3). 913 914 * The ifmcstat(8) utility has also been updated to print the MLDv2 915 endpoint state and source filter lists via sysctl(3). 916 917 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable 918 loopback of IPv6 multicast datagrams by default; it defaults to 1 919 to preserve the existing behaviour. Disabling multicast loopback is 920 recommended for optimal system performance. 921 922 * The IPv6 MROUTING code has been changed to examine this sysctl 923 instead of attempting to perform a group lookup before looping 924 back forwarded datagrams. 925 926 Bump __FreeBSD_version to 800084. 927 92820090422: 929 Implement low-level Bluetooth HCI API. 930 Bump __FreeBSD_version to 800083. 931 93220090419: 933 The layout of struct malloc_type, used by modules to register new 934 memory allocation types, has changed. Most modules will need to 935 be rebuilt or panics may be experienced. 936 Bump __FreeBSD_version to 800081. 937 93820090415: 939 Anticipate overflowing inp_flags - add inp_flags2. 940 This changes most offsets in inpcb, so checking v4 connection 941 state will require a world rebuild. 942 Bump __FreeBSD_version to 800080. 943 94420090415: 945 Add an llentry to struct route and struct route_in6. Modules 946 embedding a struct route will need to be recompiled. 947 Bump __FreeBSD_version to 800079. 948 94920090414: 950 The size of rt_metrics_lite and by extension rtentry has changed. 951 Networking administration apps will need to be recompiled. 952 The route command now supports show as an alias for get, weighting 953 of routes, sticky and nostick flags to alter the behavior of stateful 954 load balancing. 955 Bump __FreeBSD_version to 800078. 956 95720090408: 958 Do not use Giant for kbdmux(4) locking. This is wrong and 959 apparently causing more problems than it solves. This will 960 re-open the issue where interrupt handlers may race with 961 kbdmux(4) in polling mode. Typical symptoms include (but 962 not limited to) duplicated and/or missing characters when 963 low level console functions (such as gets) are used while 964 interrupts are enabled (for example geli password prompt, 965 mountroot prompt etc.). Disabling kbdmux(4) may help. 966 96720090407: 968 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed; 969 kernel modules referencing any of the above need to be recompiled. 970 Bump __FreeBSD_version to 800075. 971 97220090320: 973 GEOM_PART has become the default partition slicer for storage devices, 974 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It 975 introduces some changes: 976 977 MSDOS/EBR: the devices created from MSDOS extended partition entries 978 (EBR) can be named differently than with GEOM_MBR and are now symlinks 979 to devices with offset-based names. fstabs may need to be modified. 980 981 BSD: the "geometry does not match label" warning is harmless in most 982 cases but it points to problems in file system misalignment with 983 disk geometry. The "c" partition is now implicit, covers the whole 984 top-level drive and cannot be (mis)used by users. 985 986 General: Kernel dumps are now not allowed to be written to devices 987 whose partition types indicate they are meant to be used for file 988 systems (or, in case of MSDOS partitions, as something else than 989 the "386BSD" type). 990 991 Most of these changes date approximately from 200812. 992 99320090319: 994 The uscanner(4) driver has been removed from the kernel. This follows 995 Linux removing theirs in 2.6 and making libusb the default interface 996 (supported by sane). 997 99820090319: 999 The multicast forwarding code has been cleaned up. netstat(1) 1000 only relies on KVM now for printing bandwidth upcall meters. 1001 The IPv4 and IPv6 modules are split into ip_mroute_mod and 1002 ip6_mroute_mod respectively. The config(5) options for statically 1003 compiling this code remain the same, i.e. 'options MROUTING'. 1004 100520090315: 1006 Support for the IFF_NEEDSGIANT network interface flag has been 1007 removed, which means that non-MPSAFE network device drivers are no 1008 longer supported. In particular, if_ar, if_sr, and network device 1009 drivers from the old (legacy) USB stack can no longer be built or 1010 used. 1011 101220090313: 1013 POSIX.1 Native Language Support (NLS) has been enabled in libc and 1014 a bunch of new language catalog files have also been added. 1015 This means that some common libc messages are now localized and 1016 they depend on the LC_MESSAGES environmental variable. 1017 101820090313: 1019 The k8temp(4) driver has been renamed to amdtemp(4) since 1020 support for Family 10 and Family 11 CPU families was added. 1021 102220090309: 1023 IGMPv3 and Source-Specific Multicast (SSM) have been merged 1024 to the IPv4 stack. VIMAGE hooks are in but not yet used. 1025 1026 For kernel developers, the most important changes are that the 1027 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(), 1028 and this lock has been downgraded to a non-recursive mutex. 1029 1030 Transport protocols (UDP, Raw IP) are now responsible for filtering 1031 inbound multicast traffic according to group membership and source 1032 filters. The imo_multicast_filter() KPI exists for this purpose. 1033 Transports which do not use multicast (SCTP, TCP) already reject 1034 multicast by default. Forwarding and receive performance may improve 1035 as a mutex acquisition is no longer needed in the ip_input() 1036 low-level input path. in_addmulti() and in_delmulti() are shimmed 1037 to new KPIs which exist to support SSM in-kernel. 1038 1039 For application developers, it is recommended that loopback of 1040 multicast datagrams be disabled for best performance, as this 1041 will still cause the lock to be taken for each looped-back 1042 datagram transmission. The net.inet.ip.mcast.loop sysctl may 1043 be tuned to 0 to disable loopback by default; it defaults to 1 1044 to preserve the existing behaviour. 1045 1046 For systems administrators, to obtain best performance with 1047 multicast reception and multiple groups, it is always recommended 1048 that a card with a suitably precise hash filter is used. Hash 1049 collisions will still result in the lock being taken within the 1050 transport protocol input path to check group membership. 1051 1052 If deploying FreeBSD in an environment with IGMP snooping switches, 1053 it is recommended that the net.inet.igmp.sendlocal sysctl remain 1054 enabled; this forces 224.0.0.0/24 group membership to be announced 1055 via IGMP. 1056 1057 The size of 'struct igmpstat' has changed; netstat needs to be 1058 recompiled to reflect this. 1059 Bump __FreeBSD_version to 800070. 1060 106120090309: 1062 libusb20.so.1 is now installed as libusb.so.1 and the ports system 1063 updated to use it. This requires a buildworld/installworld in order to 1064 update the library and dependencies (usbconfig, etc). Its advisable to 1065 rebuild all ports which uses libusb. More specific directions are given 1066 in the ports collection UPDATING file. Any /etc/libmap.conf entries for 1067 libusb are no longer required and can be removed. 1068 106920090302: 1070 A workaround is committed to allow the creation of System V shared 1071 memory segment of size > 2 GB on the 64-bit architectures. 1072 Due to a limitation of the existing ABI, the shm_segsz member 1073 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is 1074 wrong for large segments. Note that limits must be explicitly 1075 raised to allow such segments to be created. 1076 107720090301: 1078 The layout of struct ifnet has changed, requiring a rebuild of all 1079 network device driver modules. 1080 108120090227: 1082 The /dev handling for the new USB stack has changed, a 1083 buildworld/installworld is required for libusb20. 1084 108520090223: 1086 The new USB2 stack has now been permanently moved in and all kernel and 1087 module names reverted to their previous values (eg, usb, ehci, ohci, 1088 ums, ...). The old usb stack can be compiled in by prefixing the name 1089 with the letter 'o', the old usb modules have been removed. 1090 Updating entry 20090216 for xorg and 20090215 for libmap may still 1091 apply. 1092 109320090217: 1094 The rc.conf(5) option if_up_delay has been renamed to 1095 defaultroute_delay to better reflect its purpose. If you have 1096 customized this setting in /etc/rc.conf you need to update it to 1097 use the new name. 1098 109920090216: 1100 xorg 7.4 wants to configure its input devices via hald which does not 1101 yet work with USB2. If the keyboard/mouse does not work in xorg then 1102 add 1103 Option "AllowEmptyInput" "off" 1104 to your ServerLayout section. This will cause X to use the configured 1105 kbd and mouse sections from your xorg.conf. 1106 110720090215: 1108 The GENERIC kernels for all architectures now default to the new USB2 1109 stack. No kernel config options or code have been removed so if a 1110 problem arises please report it and optionally revert to the old USB 1111 stack. If you are loading USB kernel modules or have a custom kernel 1112 that includes GENERIC then ensure that usb names are also changed over, 1113 eg uftdi -> usb2_serial_ftdi. 1114 1115 Older programs linked against the ports libusb 0.1 need to be 1116 redirected to the new stack's libusb20. /etc/libmap.conf can 1117 be used for this: 1118 # Map old usb library to new one for usb2 stack 1119 libusb-0.1.so.8 libusb20.so.1 1120 112120090209: 1122 All USB ethernet devices now attach as interfaces under the name ueN 1123 (eg. ue0). This is to provide a predictable name as vendors often 1124 change usb chipsets in a product without notice. 1125 112620090203: 1127 The ichsmb(4) driver has been changed to require SMBus slave 1128 addresses be left-justified (xxxxxxx0b) rather than right-justified. 1129 All of the other SMBus controller drivers require left-justified 1130 slave addresses, so this change makes all the drivers provide the 1131 same interface. 1132 113320090201: 1134 INET6 statistics (struct ip6stat) was updated. 1135 netstat(1) needs to be recompiled. 1136 113720090119: 1138 NTFS has been removed from GENERIC kernel on amd64 to match 1139 GENERIC on i386. Should not cause any issues since mount_ntfs(8) 1140 will load ntfs.ko module automatically when NTFS support is 1141 actually needed, unless ntfs.ko is not installed or security 1142 level prohibits loading kernel modules. If either is the case, 1143 "options NTFS" has to be added into kernel config. 1144 114520090115: 1146 TCP Appropriate Byte Counting (RFC 3465) support added to kernel. 1147 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to 1148 800061. User space tools that rely on the size of struct tcpcb in 1149 tcp_var.h (e.g. sockstat) need to be recompiled. 1150 115120081225: 1152 ng_tty(4) module updated to match the new TTY subsystem. 1153 Due to API change, user-level applications must be updated. 1154 New API support added to mpd5 CVS and expected to be present 1155 in next mpd5.3 release. 1156 115720081219: 1158 With __FreeBSD_version 800060 the makefs tool is part of 1159 the base system (it was a port). 1160 116120081216: 1162 The afdata and ifnet locks have been changed from mutexes to 1163 rwlocks, network modules will need to be re-compiled. 1164 116520081214: 1166 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite. 1167 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated. 1168 The new code reduced struct rtentry{} by 16 bytes on 32-bit 1169 architecture and 40 bytes on 64-bit architecture. The userland 1170 applications "arp" and "ndp" have been updated accordingly. 1171 The output from "netstat -r" shows only routing entries and 1172 none of the L2 information. 1173 117420081130: 1175 __FreeBSD_version 800057 marks the switchover from the 1176 binary ath hal to source code. Users must add the line: 1177 1178 options AH_SUPPORT_AR5416 1179 1180 to their kernel config files when specifying: 1181 1182 device ath_hal 1183 1184 The ath_hal module no longer exists; the code is now compiled 1185 together with the driver in the ath module. It is now 1186 possible to tailor chip support (i.e. reduce the set of chips 1187 and thereby the code size); consult ath_hal(4) for details. 1188 118920081121: 1190 __FreeBSD_version 800054 adds memory barriers to 1191 <machine/atomic.h>, new interfaces to ifnet to facilitate 1192 multiple hardware transmit queues for cards that support 1193 them, and a lock-less ring-buffer implementation to 1194 enable drivers to more efficiently manage queueing of 1195 packets. 1196 119720081117: 1198 A new version of ZFS (version 13) has been merged to -HEAD. 1199 This version has zpool attribute "listsnapshots" off by 1200 default, which means "zfs list" does not show snapshots, 1201 and is the same as Solaris behavior. 1202 120320081028: 1204 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled. 1205 120620081009: 1207 The uhci, ohci, ehci and slhci USB Host controller drivers have 1208 been put into separate modules. If you load the usb module 1209 separately through loader.conf you will need to load the 1210 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0 1211 controller add the following to loader.conf: 1212 1213 uhci_load="YES" 1214 ehci_load="YES" 1215 121620081009: 1217 The ABI used by the PMC toolset has changed. Please keep 1218 userland (libpmc(3)) and the kernel module (hwpmc(4)) in 1219 sync. 1220 122120081009: 1222 atapci kernel module now includes only generic PCI ATA 1223 driver. AHCI driver moved to ataahci kernel module. 1224 All vendor-specific code moved into separate kernel modules: 1225 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek, 1226 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron, 1227 atamarvell, atamicron, atanational, atanetcell, atanvidia, 1228 atapromise, ataserverworks, atasiliconimage, atasis, atavia 1229 123020080820: 1231 The TTY subsystem of the kernel has been replaced by a new 1232 implementation, which provides better scalability and an 1233 improved driver model. Most common drivers have been migrated to 1234 the new TTY subsystem, while others have not. The following 1235 drivers have not yet been ported to the new TTY layer: 1236 1237 PCI/ISA: 1238 cy, digi, rc, rp, sio 1239 1240 USB: 1241 ubser, ucycom 1242 1243 Line disciplines: 1244 ng_h4, ng_tty, ppp, sl, snp 1245 1246 Adding these drivers to your kernel configuration file shall 1247 cause compilation to fail. 1248 124920080818: 1250 ntpd has been upgraded to 4.2.4p5. 1251 125220080801: 1253 OpenSSH has been upgraded to 5.1p1. 1254 1255 For many years, FreeBSD's version of OpenSSH preferred DSA 1256 over RSA for host and user authentication keys. With this 1257 upgrade, we've switched to the vendor's default of RSA over 1258 DSA. This may cause upgraded clients to warn about unknown 1259 host keys even for previously known hosts. Users should 1260 follow the usual procedure for verifying host keys before 1261 accepting the RSA key. 1262 1263 This can be circumvented by setting the "HostKeyAlgorithms" 1264 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh 1265 command line. 1266 1267 Please note that the sequence of keys offered for 1268 authentication has been changed as well. You may want to 1269 specify IdentityFile in a different order to revert this 1270 behavior. 1271 127220080713: 1273 The sio(4) driver has been removed from the i386 and amd64 1274 kernel configuration files. This means uart(4) is now the 1275 default serial port driver on those platforms as well. 1276 1277 To prevent collisions with the sio(4) driver, the uart(4) driver 1278 uses different names for its device nodes. This means the 1279 onboard serial port will now most likely be called "ttyu0" 1280 instead of "ttyd0". You may need to reconfigure applications to 1281 use the new device names. 1282 1283 When using the serial port as a boot console, be sure to update 1284 /boot/device.hints and /etc/ttys before booting the new kernel. 1285 If you forget to do so, you can still manually specify the hints 1286 at the loader prompt: 1287 1288 set hint.uart.0.at="isa" 1289 set hint.uart.0.port="0x3F8" 1290 set hint.uart.0.flags="0x10" 1291 set hint.uart.0.irq="4" 1292 boot -s 1293 129420080609: 1295 The gpt(8) utility has been removed. Use gpart(8) to partition 1296 disks instead. 1297 129820080603: 1299 The version that Linuxulator emulates was changed from 2.4.2 1300 to 2.6.16. If you experience any problems with Linux binaries 1301 please try to set sysctl compat.linux.osrelease to 2.4.2 and 1302 if it fixes the problem contact emulation mailing list. 1303 130420080525: 1305 ISDN4BSD (I4B) was removed from the src tree. You may need to 1306 update a your kernel configuration and remove relevant entries. 1307 130820080509: 1309 I have checked in code to support multiple routing tables. 1310 See the man pages setfib(1) and setfib(2). 1311 This is a hopefully backwards compatible version, 1312 but to make use of it you need to compile your kernel 1313 with options ROUTETABLES=2 (or more up to 16). 1314 131520080420: 1316 The 802.11 wireless support was redone to enable multi-bss 1317 operation on devices that are capable. The underlying device 1318 is no longer used directly but instead wlanX devices are 1319 cloned with ifconfig. This requires changes to rc.conf files. 1320 For example, change: 1321 ifconfig_ath0="WPA DHCP" 1322 to 1323 wlans_ath0=wlan0 1324 ifconfig_wlan0="WPA DHCP" 1325 see rc.conf(5) for more details. In addition, mergemaster of 1326 /etc/rc.d is highly recommended. Simultaneous update of userland 1327 and kernel wouldn't hurt either. 1328 1329 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta 1330 modules were merged into the base wlan module. All references 1331 to these modules (e.g. in kernel config files) must be removed. 1332 133320080408: 1334 psm(4) has gained write(2) support in native operation level. 1335 Arbitrary commands can be written to /dev/psm%d and status can 1336 be read back from it. Therefore, an application is responsible 1337 for status validation and error recovery. It is a no-op in 1338 other operation levels. 1339 134020080312: 1341 Support for KSE threading has been removed from the kernel. To 1342 run legacy applications linked against KSE libmap.conf may 1343 be used. The following libmap.conf may be used to ensure 1344 compatibility with any prior release: 1345 1346 libpthread.so.1 libthr.so.1 1347 libpthread.so.2 libthr.so.2 1348 libkse.so.3 libthr.so.3 1349 135020080301: 1351 The layout of struct vmspace has changed. This affects libkvm 1352 and any executables that link against libkvm and use the 1353 kvm_getprocs() function. In particular, but not exclusively, 1354 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1). 1355 The effects are minimal, but it's advisable to upgrade world 1356 nonetheless. 1357 135820080229: 1359 The latest em driver no longer has support in it for the 1360 82575 adapter, this is now moved to the igb driver. The 1361 split was done to make new features that are incompatible 1362 with older hardware easier to do. 1363 136420080220: 1365 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4), 1366 likewise the kernel option is now GEOM_LINUX_LVM. 1367 136820080211: 1369 The default NFS mount mode has changed from UDP to TCP for 1370 increased reliability. If you rely on (insecurely) NFS 1371 mounting across a firewall you may need to update your 1372 firewall rules. 1373 137420080208: 1375 Belatedly note the addition of m_collapse for compacting 1376 mbuf chains. 1377 137820080126: 1379 The fts(3) structures have been changed to use adequate 1380 integer types for their members and so to be able to cope 1381 with huge file trees. The old fts(3) ABI is preserved 1382 through symbol versioning in libc, so third-party binaries 1383 using fts(3) should still work, although they will not take 1384 advantage of the extended types. At the same time, some 1385 third-party software might fail to build after this change 1386 due to unportable assumptions made in its source code about 1387 fts(3) structure members. Such software should be fixed 1388 by its vendor or, in the worst case, in the ports tree. 1389 FreeBSD_version 800015 marks this change for the unlikely 1390 case that a portable fix is impossible. 1391 139220080123: 1393 To upgrade to -current after this date, you must be running 1394 FreeBSD not older than 6.0-RELEASE. Upgrading to -current 1395 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems. 1396 139720071128: 1398 The ADAPTIVE_GIANT kernel option has been retired because its 1399 functionality is the default now. 1400 140120071118: 1402 The AT keyboard emulation of sunkbd(4) has been turned on 1403 by default. In order to make the special symbols of the Sun 1404 keyboards driven by sunkbd(4) work under X these now have 1405 to be configured the same way as Sun USB keyboards driven 1406 by ukbd(4) (which also does AT keyboard emulation), f.e.: 1407 1408 Option "XkbLayout" "us" 1409 Option "XkbRules" "xorg" 1410 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us" 1411 141220071024: 1413 It has been decided that it is desirable to provide ABI 1414 backwards compatibility to the FreeBSD 4/5/6 versions of the 1415 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was 1416 broken with the introduction of PCI domain support (see the 1417 20070930 entry). Unfortunately, this required the ABI of 1418 PCIOCGETCONF to be broken again in order to be able to 1419 provide backwards compatibility to the old version of that 1420 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled 1421 again. As for prominent ports this affects neither pciutils 1422 nor xorg-server this time, the hal port needs to be rebuilt 1423 however. 1424 142520071020: 1426 The misnamed kthread_create() and friends have been renamed 1427 to kproc_create() etc. Many of the callers already 1428 used kproc_start().. 1429 I will return kthread_create() and friends in a while 1430 with implementations that actually create threads, not procs. 1431 Renaming corresponds with version 800002. 1432 143320071010: 1434 RELENG_7 branched. 1435 1436COMMON ITEMS: 1437 1438 General Notes 1439 ------------- 1440 Avoid using make -j when upgrading. While generally safe, there are 1441 sometimes problems using -j to upgrade. If your upgrade fails with 1442 -j, please try again without -j. From time to time in the past there 1443 have been problems using -j with buildworld and/or installworld. This 1444 is especially true when upgrading between "distant" versions (eg one 1445 that cross a major release boundary or several minor releases, or when 1446 several months have passed on the -current branch). 1447 1448 Sometimes, obscure build problems are the result of environment 1449 poisoning. This can happen because the make utility reads its 1450 environment when searching for values for global variables. To run 1451 your build attempts in an "environmental clean room", prefix all make 1452 commands with 'env -i '. See the env(1) manual page for more details. 1453 1454 When upgrading from one major version to another it is generally best 1455 to upgrade to the latest code in the currently installed branch first, 1456 then do an upgrade to the new branch. This is the best-tested upgrade 1457 path, and has the highest probability of being successful. Please try 1458 this approach before reporting problems with a major version upgrade. 1459 1460 ZFS notes 1461 --------- 1462 When upgrading the boot ZFS pool to a new version, always follow 1463 these two steps: 1464 1465 1.) recompile and reinstall the ZFS boot loader and boot block 1466 (this is part of "make buildworld" and "make installworld") 1467 1468 2.) update the ZFS boot block on your boot drive 1469 1470 The following example updates the ZFS boot block on the first 1471 partition (freebsd-boot) of a GPT partitioned drive ad0: 1472 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0" 1473 1474 Non-boot pools do not need these updates. 1475 1476 To build a kernel 1477 ----------------- 1478 If you are updating from a prior version of FreeBSD (even one just 1479 a few days old), you should follow this procedure. It is the most 1480 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld, 1481 1482 make kernel-toolchain 1483 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE 1484 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE 1485 1486 To test a kernel once 1487 --------------------- 1488 If you just want to boot a kernel once (because you are not sure 1489 if it works, or if you want to boot a known bad kernel to provide 1490 debugging information) run 1491 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel 1492 nextboot -k testkernel 1493 1494 To just build a kernel when you know that it won't mess you up 1495 -------------------------------------------------------------- 1496 This assumes you are already running a CURRENT system. Replace 1497 ${arch} with the architecture of your machine (e.g. "i386", 1498 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc). 1499 1500 cd src/sys/${arch}/conf 1501 config KERNEL_NAME_HERE 1502 cd ../compile/KERNEL_NAME_HERE 1503 make depend 1504 make 1505 make install 1506 1507 If this fails, go to the "To build a kernel" section. 1508 1509 To rebuild everything and install it on the current system. 1510 ----------------------------------------------------------- 1511 # Note: sometimes if you are running current you gotta do more than 1512 # is listed here if you are upgrading from a really old current. 1513 1514 <make sure you have good level 0 dumps> 1515 make buildworld 1516 make kernel KERNCONF=YOUR_KERNEL_HERE 1517 [1] 1518 <reboot in single user> [3] 1519 mergemaster -p [5] 1520 make installworld 1521 mergemaster -i [4] 1522 make delete-old [6] 1523 <reboot> 1524 1525 1526 To cross-install current onto a separate partition 1527 -------------------------------------------------- 1528 # In this approach we use a separate partition to hold 1529 # current's root, 'usr', and 'var' directories. A partition 1530 # holding "/", "/usr" and "/var" should be about 2GB in 1531 # size. 1532 1533 <make sure you have good level 0 dumps> 1534 <boot into -stable> 1535 make buildworld 1536 make buildkernel KERNCONF=YOUR_KERNEL_HERE 1537 <maybe newfs current's root partition> 1538 <mount current's root partition on directory ${CURRENT_ROOT}> 1539 make installworld DESTDIR=${CURRENT_ROOT} 1540 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd 1541 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT} 1542 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd 1543 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition> 1544 <reboot into current> 1545 <do a "native" rebuild/install as described in the previous section> 1546 <maybe install compatibility libraries from ports/misc/compat*> 1547 <reboot> 1548 1549 1550 To upgrade in-place from 8.x-stable to current 1551 ---------------------------------------------- 1552 <make sure you have good level 0 dumps> 1553 make buildworld [9] 1554 make kernel KERNCONF=YOUR_KERNEL_HERE [8] 1555 [1] 1556 <reboot in single user> [3] 1557 mergemaster -p [5] 1558 make installworld 1559 mergemaster -i [4] 1560 make delete-old [6] 1561 <reboot> 1562 1563 Make sure that you've read the UPDATING file to understand the 1564 tweaks to various things you need. At this point in the life 1565 cycle of current, things change often and you are on your own 1566 to cope. The defaults can also change, so please read ALL of 1567 the UPDATING entries. 1568 1569 Also, if you are tracking -current, you must be subscribed to 1570 freebsd-current@freebsd.org. Make sure that before you update 1571 your sources that you have read and understood all the recent 1572 messages there. If in doubt, please track -stable which has 1573 much fewer pitfalls. 1574 1575 [1] If you have third party modules, such as vmware, you 1576 should disable them at this point so they don't crash your 1577 system on reboot. 1578 1579 [3] From the bootblocks, boot -s, and then do 1580 fsck -p 1581 mount -u / 1582 mount -a 1583 cd src 1584 adjkerntz -i # if CMOS is wall time 1585 Also, when doing a major release upgrade, it is required that 1586 you boot into single user mode to do the installworld. 1587 1588 [4] Note: This step is non-optional. Failure to do this step 1589 can result in a significant reduction in the functionality of the 1590 system. Attempting to do it by hand is not recommended and those 1591 that pursue this avenue should read this file carefully, as well 1592 as the archives of freebsd-current and freebsd-hackers mailing lists 1593 for potential gotchas. The -U option is also useful to consider. 1594 See mergemaster(8) for more information. 1595 1596 [5] Usually this step is a noop. However, from time to time 1597 you may need to do this if you get unknown user in the following 1598 step. It never hurts to do it all the time. You may need to 1599 install a new mergemaster (cd src/usr.sbin/mergemaster && make 1600 install) after the buildworld before this step if you last updated 1601 from current before 20020224 or from -stable before 20020408. 1602 1603 [6] This only deletes old files and directories. Old libraries 1604 can be deleted by "make delete-old-libs", but you have to make 1605 sure that no program is using those libraries anymore. 1606 1607 [8] In order to have a kernel that can run the 4.x binaries needed to 1608 do an installworld, you must include the COMPAT_FREEBSD4 option in 1609 your kernel. Failure to do so may leave you with a system that is 1610 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is 1611 required to run the 5.x binaries on more recent kernels. And so on 1612 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7. 1613 1614 Make sure that you merge any new devices from GENERIC since the 1615 last time you updated your kernel config file. 1616 1617 [9] When checking out sources, you must include the -P flag to have 1618 cvs prune empty directories. 1619 1620 If CPUTYPE is defined in your /etc/make.conf, make sure to use the 1621 "?=" instead of the "=" assignment operator, so that buildworld can 1622 override the CPUTYPE if it needs to. 1623 1624 MAKEOBJDIRPREFIX must be defined in an environment variable, and 1625 not on the command line, or in /etc/make.conf. buildworld will 1626 warn if it is improperly defined. 1627FORMAT: 1628 1629This file contains a list, in reverse chronological order, of major 1630breakages in tracking -current. It is not guaranteed to be a complete 1631list of such breakages, and only contains entries since October 10, 2007. 1632If you need to see UPDATING entries from before that date, you will need 1633to fetch an UPDATING file from an older FreeBSD release. 1634 1635Copyright information: 1636 1637Copyright 1998-2009 M. Warner Losh. All Rights Reserved. 1638 1639Redistribution, publication, translation and use, with or without 1640modification, in full or in part, in any form or format of this 1641document are permitted without further permission from the author. 1642 1643THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR 1644IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 1645WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 1646DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT, 1647INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 1648(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 1649SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 1650HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 1651STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 1652IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 1653POSSIBILITY OF SUCH DAMAGE. 1654 1655Contact Warner Losh if you have any questions about your use of 1656this document. 1657 1658$FreeBSD: head/UPDATING 241515 2012-10-13 19:37:58Z gabor $ 1659