UPDATING revision 241955
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 2720121023: 28 The ZERO_COPY_SOCKET kernel option has been removed and 29 split into SOCKET_SEND_COW and SOCKET_RECV_PFLIP. 30 NB: SOCKET_SEND_COW uses the VM page based copy-on-write 31 mechanism which is not safe and may result in kernel crashes. 32 NB: The SOCKET_RECV_PFLIP mechanism is useless as no current 33 driver supports disposeable external page sized mbuf storage. 34 Proper replacements for both zero-copy mechanisms are under 35 consideration and will eventually lead to complete removal 36 of the two kernel options. 37 3820121023: 39 The IPv4 network stack has been converted to network byte 40 order. The following modules need to be recompiled together 41 with kernel: carp(4), divert(4), gif(4), siftr(4), gre(4), 42 pf(4), ipfw(4), ng_ipfw(4), stf(4). 43 4420121022: 45 Support for non-MPSAFE filesystems was removed from VFS. The 46 VFS_VERSION was bumped, all filesystem modules shall be 47 recompiled. 48 4920121018: 50 All the non-MPSAFE filesystems have been disconnected from 51 the build. The full list includes: codafs, hpfs, ntfs, nwfs, 52 portalfs, smbfs, xfs. 53 5420121016: 55 The interface cloning API and ABI has changed. The following 56 modules need to be recompiled together with kernel: 57 ipfw(4), pfsync(4), pflog(4), usb(4), wlan(4), stf(4), 58 vlan(4), disc(4), edsc(4), if_bridge(4), gif(4), tap(4), 59 faith(4), epair(4), enc(4), tun(4), if_lagg(4), gre(4). 60 6120121015: 62 The sdhci driver was split in two parts: sdhci (generic SD Host 63 Controller logic) and sdhci_pci (actual hardware driver). 64 No kernel config modifications are required, but if you 65 load sdhc as a module you must switch to sdhci_pci instead. 66 6720121014: 68 Import the FUSE kernel and userland support into base system. 69 7020121013: 71 The GNU sort(1) program has been removed since the BSD-licensed 72 sort(1) has been the default for quite some time and no serious 73 problems have been reported. The corresponding WITH_GNU_SORT 74 knob has also gone. 75 7620121006: 77 The pfil(9) API/ABI for AF_INET family has been changed. Packet 78 filtering modules: pf(4), ipfw(4), ipfilter(4) need to be recompiled 79 with new kernel. 80 8120121001: 82 The net80211(4) ABI has been changed to allow for improved driver 83 PS-POLL and power-save support. All wireless drivers need to be 84 recompiled to work with the new kernel. 85 8620120913: 87 The random(4) support for the VIA hardware random number 88 generator (`PADLOCK') is no longer enabled unconditionally. 89 Add the PADLOCK_RNG option in the custom kernel config if 90 needed. The GENERIC kernels on i386 and amd64 do include the 91 option, so the change only affects the custom kernel 92 configurations. 93 9420120908: 95 The pf(4) packet filter ABI has been changed. pfctl(8) and 96 snmp_pf module need to be recompiled to work with new kernel. 97 9820120828: 99 A new ZFS feature flag "com.delphix:empty_bpobj" has been merged 100 to -HEAD. Pools that have empty_bpobj in active state can not be 101 imported read-write with ZFS implementations that do not support 102 this feature. For more information read the zpool-features(5) 103 manual page. 104 10520120727: 106 The sparc64 ZFS loader has been changed to no longer try to auto- 107 detect ZFS providers based on diskN aliases but now requires these 108 to be explicitly listed in the OFW boot-device environment variable. 109 11020120712: 111 The OpenSSL has been upgraded to 1.0.1c. Any binaries requiring 112 libcrypto.so.6 or libssl.so.6 must be recompiled. Also, there are 113 configuration changes. Make sure to merge /etc/ssl/openssl.cnf. 114 11520120712: 116 The following sysctls and tunables have been renamed for consistency 117 with other variables: 118 kern.cam.da.da_send_ordered -> kern.cam.da.send_ordered 119 kern.cam.ada.ada_send_ordered -> kern.cam.ada.send_ordered 120 12120120628: 122 The sort utility has been replaced with BSD sort. For now, GNU sort 123 is also available as "gnusort" or the default can be set back to 124 GNU sort by setting WITH_GNU_SORT. In this case, BSD sort will be 125 installed as "bsdsort". 126 12720120611: 128 A new version of ZFS (pool version 5000) has been merged to -HEAD. 129 Starting with this version the old system of ZFS pool versioning 130 is superseded by "feature flags". This concept enables forward 131 compatibility against certain future changes in functionality of ZFS 132 pools. The first read-only compatible "feature flag" for ZFS pools 133 is named "com.delphix:async_destroy". For more information 134 read the new zpool-features(5) manual page. 135 Please refer to the "ZFS notes" section of this file for information 136 on upgrading boot ZFS pools. 137 13820120417: 139 The malloc(3) implementation embedded in libc now uses sources imported 140 as contrib/jemalloc. The most disruptive API change is to 141 /etc/malloc.conf. If your system has an old-style /etc/malloc.conf, 142 delete it prior to installworld, and optionally re-create it using the 143 new format after rebooting. See malloc.conf(5) for details 144 (specifically the TUNING section and the "opt.*" entries in the MALLCTL 145 NAMESPACE section). 146 14720120328: 148 Big-endian MIPS TARGET_ARCH values no longer end in "eb". mips64eb 149 is now spelled mips64. mipsn32eb is now spelled mipsn32. mipseb is 150 now spelled mips. This is to aid compatibility with third-party 151 software that expects this naming scheme in uname(3). Little-endian 152 settings are unchanged. 153 15420120306: 155 Disable by default the option VFS_ALLOW_NONMPSAFE for all supported 156 platforms. 157 15820120229: 159 Now unix domain sockets behave "as expected" on nullfs(5). Previously 160 nullfs(5) did not pass through all behaviours to the underlying layer, 161 as a result if we bound to a socket on the lower layer we could connect 162 only to the lower path; if we bound to the upper layer we could connect 163 only to the upper path. The new behavior is one can connect to both the 164 lower and the upper paths regardless what layer path one binds to. 165 16620120211: 167 The getifaddrs upgrade path broken with 20111215 has been restored. 168 If you have upgraded in between 20111215 and 20120209 you need to 169 recompile libc again with your kernel. You still need to recompile 170 world to be able to configure CARP but this restriction already 171 comes from 20111215. 172 17320120114: 174 The set_rcvar() function has been removed from /etc/rc.subr. All 175 base and ports rc.d scripts have been updated, so if you have a 176 port installed with a script in /usr/local/etc/rc.d you can either 177 hand-edit the rcvar= line, or reinstall the port. 178 179 An easy way to handle the mass-update of /etc/rc.d: 180 rm /etc/rc.d/* && mergemaster -i 181 18220120109: 183 panic(9) now stops other CPUs in the SMP systems, disables interrupts 184 on the current CPU and prevents other threads from running. 185 This behavior can be reverted using the kern.stop_scheduler_on_panic 186 tunable/sysctl. 187 The new behavior can be incompatible with kern.sync_on_panic. 188 18920111215: 190 The carp(4) facility has been changed significantly. Configuration 191 of the CARP protocol via ifconfig(8) has changed, as well as format 192 of CARP events submitted to devd(8) has changed. See manual pages 193 for more information. The arpbalance feature of carp(4) is currently 194 not supported anymore. 195 196 Size of struct in_aliasreq, struct in6_aliasreq has changed. User 197 utilities using SIOCAIFADDR, SIOCAIFADDR_IN6, e.g. ifconfig(8), 198 need to be recompiled. 199 20020111122: 201 The acpi_wmi(4) status device /dev/wmistat has been renamed to 202 /dev/wmistat0. 203 20420111108: 205 The option VFS_ALLOW_NONMPSAFE option has been added in order to 206 explicitely support non-MPSAFE filesystems. 207 It is on by default for all supported platform at this present 208 time. 209 21020111101: 211 The broken amd(4) driver has been replaced with esp(4) in the amd64, 212 i386 and pc98 GENERIC kernel configuration files. 213 21420110930: 215 sysinstall has been removed 216 21720110923: 218 The stable/9 branch created in subversion. This corresponds to the 219 RELENG_9 branch in CVS. 220 22120110913: 222 This commit modifies vfs_register() so that it uses a hash 223 calculation to set vfc_typenum, which is enabled by default. 224 The first time a system is booted after this change, the 225 vfc_typenum values will change for all file systems. The 226 main effect of this is a change to the NFS server file handles 227 for file systems that use vfc_typenum in their fsid, such as ZFS. 228 It will, however, prevent vfc_typenum from changing when file 229 systems are loaded in a different order for subsequent reboots. 230 To disable this, you can set vfs.typenumhash=0 in /boot/loader.conf 231 until you are ready to remount all NFS clients after a reboot. 232 23320110828: 234 Bump the shared library version numbers for libraries that 235 do not use symbol versioning, have changed the ABI compared 236 to stable/8 and which shared library version was not bumped. 237 Done as part of 9.0-RELEASE cycle. 238 23920110815: 240 During the merge of Capsicum features, the fget(9) KPI was modified. 241 This may require the rebuilding of out-of-tree device drivers -- 242 issues have been reported specifically with the nVidia device driver. 243 __FreeBSD_version is bumped to 900041. 244 245 Also, there is a period between 20110811 and 20110814 where the 246 special devices /dev/{stdin,stdout,stderr} did not work correctly. 247 Building world from a kernel during that window may not work. 248 24920110628: 250 The packet filter (pf) code has been updated to OpenBSD 4.5. 251 You need to update userland tools to be in sync with kernel. 252 This update breaks backward compatibility with earlier pfsync(4) 253 versions. Care must be taken when updating redundant firewall setups. 254 25520110608: 256 The following sysctls and tunables are retired on x86 platforms: 257 machdep.hlt_cpus 258 machdep.hlt_logical_cpus 259 The following sysctl is retired: 260 machdep.hyperthreading_allowed 261 The sysctls were supposed to provide a way to dynamically offline and 262 online selected CPUs on x86 platforms, but the implementation has not 263 been reliable especially with SCHED_ULE scheduler. 264 machdep.hyperthreading_allowed tunable is still available to ignore 265 hyperthreading CPUs at OS level. 266 Individual CPUs can be disabled using hint.lapic.X.disabled tunable, 267 where X is an APIC ID of a CPU. Be advised, though, that disabling 268 CPUs in non-uniform fashion will result in non-uniform topology and 269 may lead to sub-optimal system performance with SCHED_ULE, which is 270 a default scheduler. 271 27220110607: 273 cpumask_t type is retired and cpuset_t is used in order to describe 274 a mask of CPUs. 275 27620110531: 277 Changes to ifconfig(8) for dynamic address family detection mandate 278 that you are running a kernel of 20110525 or later. Make sure to 279 follow the update procedure to boot a new kernel before installing 280 world. 281 28220110513: 283 Support for sun4v architecture is officially dropped 284 28520110503: 286 Several KPI breaking changes have been committed to the mii(4) layer, 287 the PHY drivers and consequently some Ethernet drivers using mii(4). 288 This means that miibus.ko and the modules of the affected Ethernet 289 drivers need to be recompiled. 290 291 Note to kernel developers: Given that the OUI bit reversion problem 292 was fixed as part of these changes all mii(4) commits related to OUIs, 293 i.e. to sys/dev/mii/miidevs, PHY driver probing and vendor specific 294 handling, no longer can be merged verbatim to stable/8 and previous 295 branches. 296 29720110430: 298 Users of the Atheros AR71xx SoC code now need to add 'device ar71xx_pci' 299 into their kernel configurations along with 'device pci'. 300 30120110427: 302 The default NFS client is now the new NFS client, so fstype "newnfs" 303 is now "nfs" and the regular/old NFS client is now fstype "oldnfs". 304 Although mounts via fstype "nfs" will usually work without userland 305 changes, it is recommended that the mount(8) and mount_nfs(8) 306 commands be rebuilt from sources and that a link to mount_nfs called 307 mount_oldnfs be created. The new client is compiled into the 308 kernel with "options NFSCL" and this is needed for diskless root 309 file systems. The GENERIC kernel configs have been changed to use 310 NFSCL and NFSD (the new server) instead of NFSCLIENT and NFSSERVER. 311 To use the regular/old client, you can "mount -t oldnfs ...". For 312 a diskless root file system, you must also include a line like: 313 314 vfs.root.mountfrom="oldnfs:" 315 316 in the boot/loader.conf on the root fs on the NFS server to make 317 a diskless root fs use the old client. 318 31920110424: 320 The GENERIC kernels for all architectures now default to the new 321 CAM-based ATA stack. It means that all legacy ATA drivers were 322 removed and replaced by respective CAM drivers. If you are using 323 ATA device names in /etc/fstab or other places, make sure to update 324 them respectively (adX -> adaY, acdX -> cdY, afdX -> daY, astX -> saY, 325 where 'Y's are the sequential numbers starting from zero for each type 326 in order of detection, unless configured otherwise with tunables, 327 see cam(4)). There will be symbolic links created in /dev/ to map 328 old adX devices to the respective adaY. They should provide basic 329 compatibility for file systems mounting in most cases, but they do 330 not support old user-level APIs and do not have respective providers 331 in GEOM. Consider using updated management tools with new device names. 332 333 It is possible to load devices ahci, ata, siis and mvs as modules, 334 but option ATA_CAM should remain in kernel configuration to make ata 335 module work as CAM driver supporting legacy ATA controllers. Device ata 336 still can be used in modular fashion (atacore + ...). Modules atadisk 337 and atapi* are not used and won't affect operation in ATA_CAM mode. 338 Note that to use CAM-based ATA kernel should include CAM devices 339 scbus, pass, da (or explicitly ada), cd and optionally others. All of 340 them are parts of the cam module. 341 342 ataraid(4) functionality is now supported by the RAID GEOM class. 343 To use it you can load geom_raid kernel module and use graid(8) tool 344 for management. Instead of /dev/arX device names, use /dev/raid/rX. 345 346 No kernel config options or code have been removed, so if a problem 347 arises, please report it and optionally revert to the old ATA stack. 348 In order to do it you can remove from the kernel config: 349 options ATA_CAM 350 device ahci 351 device mvs 352 device siis 353 , and instead add back: 354 device atadisk # ATA disk drives 355 device ataraid # ATA RAID drives 356 device atapicd # ATAPI CDROM drives 357 device atapifd # ATAPI floppy drives 358 device atapist # ATAPI tape drives 359 36020110423: 361 The default NFS server has been changed to the new server, which 362 was referred to as the experimental server. If you need to switch 363 back to the old NFS server, you must now put the "-o" option on 364 both the mountd and nfsd commands. This can be done using the 365 mountd_flags and nfs_server_flags rc.conf variables until an 366 update to the rc scripts is committed, which is coming soon. 367 36820110418: 369 The GNU Objective-C runtime library (libobjc), and other Objective-C 370 related components have been removed from the base system. If you 371 require an Objective-C library, please use one of the available ports. 372 37320110331: 374 ath(4) has been split into bus- and device- modules. if_ath contains 375 the HAL, the TX rate control and the network device code. if_ath_pci 376 contains the PCI bus glue. For Atheros MIPS embedded systems, if_ath_ahb 377 contains the AHB glue. Users need to load both if_ath_pci and if_ath 378 in order to use ath on everything else. 379 380 TO REPEAT: if_ath_ahb is not needed for normal users. Normal users only 381 need to load if_ath and if_ath_pci for ath(4) operation. 382 38320110314: 384 As part of the replacement of sysinstall, the process of building 385 release media has changed significantly. For details, please re-read 386 release(7), which has been updated to reflect the new build process. 387 38820110218: 389 GNU binutils 2.17.50 (as of 2007-07-03) has been merged to -HEAD. This 390 is the last available version under GPLv2. It brings a number of new 391 features, such as support for newer x86 CPU's (with SSE-3, SSSE-3, SSE 392 4.1 and SSE 4.2), better support for powerpc64, a number of new 393 directives, and lots of other small improvements. See the ChangeLog 394 file in contrib/binutils for the full details. 395 39620110218: 397 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868 398 compliant, and will now use half of hash for authentication. 399 This will break interoperability with all stacks (including all 400 actual FreeBSD versions) who implement 401 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for 402 authentication). 403 The only workaround with such peers is to use another HMAC 404 algorithm for IPsec ("phase 2") authentication. 405 40620110207: 407 Remove the uio_yield prototype and symbol. This function has 408 been misnamed since it was introduced and should not be 409 globally exposed with this name. The equivalent functionality 410 is now available using kern_yield(curthread->td_user_pri). 411 The function remains undocumented. 412 41320110112: 414 A SYSCTL_[ADD_]UQUAD was added for unsigned uint64_t pointers, 415 symmetric with the existing SYSCTL_[ADD_]QUAD. Type checking 416 for scalar sysctls is defined but disabled. Code that needs 417 UQUAD to pass the type checking that must compile on older 418 systems where the define is not present can check against 419 __FreeBSD_version >= 900030. 420 421 The system dialog(1) has been replaced with a new version previously 422 in ports as devel/cdialog. dialog(1) is mostly command-line compatible 423 with the previous version, but the libdialog associated with it has 424 a largely incompatible API. As such, the original version of libdialog 425 will be kept temporarily as libodialog, until its base system consumers 426 are replaced or updated. Bump __FreeBSD_version to 900030. 427 42820110103: 429 If you are trying to run make universe on a -stable system, and you get 430 the following warning: 431 "Makefile", line 356: "Target architecture for i386/conf/GENERIC 432 unknown. config(8) likely too old." 433 or something similar to it, then you must upgrade your -stable system 434 to 8.2-Release or newer (really, any time after r210146 7/15/2010 in 435 stable/8) or build the config from the latest stable/8 branch and 436 install it on your system. 437 438 Prior to this date, building a current universe on 8-stable system from 439 between 7/15/2010 and 1/2/2011 would result in a weird shell parsing 440 error in the first kernel build phase. A new config on those old 441 systems will fix that problem for older versions of -current. 442 44320101228: 444 The TCP stack has been modified to allow Khelp modules to interact with 445 it via helper hook points and store per-connection data in the TCP 446 control block. Bump __FreeBSD_version to 900029. User space tools that 447 rely on the size of struct tcpcb in tcp_var.h (e.g. sockstat) need to 448 be recompiled. 449 45020101114: 451 Generic IEEE 802.3 annex 31B full duplex flow control support has been 452 added to mii(4) and bge(4), bce(4), msk(4), nfe(4) and stge(4) along 453 with brgphy(4), e1000phy(4) as well as ip1000phy() have been converted 454 to take advantage of it instead of using custom implementations. This 455 means that these drivers now no longer unconditionally advertise 456 support for flow control but only do so if flow control is a selected 457 media option. This was implemented in the generic support that way in 458 order to allow flow control to be switched on and off via ifconfig(8) 459 with the PHY specific default to typically off in order to protect 460 from unwanted effects. Consequently, if you used flow control with 461 one of the above mentioned drivers you now need to explicitly enable 462 it, for example via: 463 ifconfig bge0 media auto mediaopt flowcontrol 464 465 Along with the above mentioned changes generic support for setting 466 1000baseT master mode also has been added and brgphy(4), ciphy(4), 467 e1000phy(4) as well as ip1000phy(4) have been converted to take 468 advantage of it. This means that these drivers now no longer take the 469 link0 parameter for selecting master mode but the master media option 470 has to be used instead, for example like in the following: 471 ifconfig bge0 media 1000baseT mediaopt full-duplex,master 472 473 Selection of master mode now is also available with all other PHY 474 drivers supporting 1000baseT. 475 47620101111: 477 The TCP stack has received a significant update to add support for 478 modularised congestion control and generally improve the clarity of 479 congestion control decisions. Bump __FreeBSD_version to 900025. User 480 space tools that rely on the size of struct tcpcb in tcp_var.h (e.g. 481 sockstat) need to be recompiled. 482 48320101002: 484 The man(1) utility has been replaced by a new version that no longer 485 uses /etc/manpath.config. Please consult man.conf(5) for how to 486 migrate local entries to the new format. 487 48820100928: 489 The copyright strings printed by login(1) and sshd(8) at the time of a 490 new connection have been removed to follow other operating systems and 491 upstream sshd. 492 49320100915: 494 A workaround for a fixed ld bug has been removed in kernel code, 495 so make sure that your system ld is built from sources after 496 revision 210245 from 2010-07-19 (r211583 if building head kernel 497 on stable/8, r211584 for stable/7; both from 2010-08-21). 498 A symptom of incorrect ld version is different addresses for 499 set_pcpu section and __start_set_pcpu symbol in kernel and/or modules. 500 50120100913: 502 The $ipv6_prefer variable in rc.conf(5) has been split into 503 $ip6addrctl_policy and $ipv6_activate_all_interfaces. 504 505 The $ip6addrctl_policy is a variable to choose a pre-defined 506 address selection policy set by ip6addrctl(8). A value 507 "ipv4_prefer", "ipv6_prefer" or "AUTO" can be specified. The 508 default is "AUTO". 509 510 The $ipv6_activate_all_interfaces specifies whether IFDISABLED 511 flag (see an entry of 20090926) is set on an interface with no 512 corresponding $ifconfig_IF_ipv6 line. The default is "NO" for 513 security reason. If you want IPv6 link-local address on all 514 interfaces by default, set this to "YES". 515 516 The old ipv6_prefer="YES" is equivalent to 517 ipv6_activate_all_interfaces="YES" and 518 ip6addrctl_policy="ipv6_prefer". 519 52020100913: 521 DTrace has grown support for userland tracing. Due to this, DTrace is 522 now i386 and amd64 only. 523 dtruss(1) is now installed by default on those systems and a new 524 kernel module is needed for userland tracing: fasttrap. 525 No changes to your kernel config file are necessary to enable 526 userland tracing, but you might consider adding 'STRIP=' and 527 'CFLAGS+=-fno-omit-frame-pointer' to your make.conf if you want 528 to have informative userland stack traces in DTrace (ustack). 529 53020100725: 531 The acpi_aiboost(4) driver has been removed in favor of the new 532 aibs(4) driver. You should update your kernel configuration file. 533 53420100722: 535 BSD grep has been imported to the base system and it is built by 536 default. It is completely BSD licensed, highly GNU-compatible, uses 537 less memory than its GNU counterpart and has a small codebase. 538 However, it is slower than its GNU counterpart, which is mostly 539 noticeable for larger searches, for smaller ones it is measurable 540 but not significant. The reason is complex, the most important factor 541 is that we lack a modern and efficient regex library and GNU 542 overcomes this by optimizing the searches internally. Future work 543 on improving the regex performance is planned, for the meantime, 544 users that need better performance, can build GNU grep instead by 545 setting the WITH_GNU_GREP knob. 546 54720100713: 548 Due to the import of powerpc64 support, all existing powerpc kernel 549 configuration files must be updated with a machine directive like this: 550 machine powerpc powerpc 551 552 In addition, an updated config(8) is required to build powerpc kernels 553 after this change. 554 55520100713: 556 A new version of ZFS (version 15) has been merged to -HEAD. 557 This version uses a python library for the following subcommands: 558 zfs allow, zfs unallow, zfs groupspace, zfs userspace. 559 For full functionality of these commands the following port must 560 be installed: sysutils/py-zfs 561 56220100429: 563 'vm_page's are now hashed by physical address to an array of mutexes. 564 Currently this is only used to serialize access to hold_count. Over 565 time the page queue mutex will be peeled away. This changes the size 566 of pmap on every architecture. And requires all callers of vm_page_hold 567 and vm_page_unhold to be updated. 568 56920100402: 570 WITH_CTF can now be specified in src.conf (not recommended, there 571 are some problems with static executables), make.conf (would also 572 affect ports which do not use GNU make and do not override the 573 compile targets) or in the kernel config (via "makeoptions 574 WITH_CTF=yes"). 575 When WITH_CTF was specified there before this was silently ignored, 576 so make sure that WITH_CTF is not used in places which could lead 577 to unwanted behavior. 578 57920100311: 580 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32 581 to allow 32-bit compatibility on non-x86 platforms. All kernel 582 configurations on amd64 and ia64 platforms using these options must 583 be modified accordingly. 584 58520100113: 586 The utmp user accounting database has been replaced with utmpx, 587 the user accounting interface standardized by POSIX. 588 Unfortunately the semantics of utmp and utmpx don't match, 589 making it practically impossible to support both interfaces. 590 The user accounting database is used by tools like finger(1), 591 last(1), talk(1), w(1) and ac(8). 592 593 All applications in the base system use utmpx. This means only 594 local binaries (e.g. from the ports tree) may still use these 595 utmp database files. These applications must be rebuilt to make 596 use of utmpx. 597 598 After the system has been upgraded, it is safe to remove the old 599 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*), 600 assuming their contents is of no importance anymore. Old wtmp 601 databases can only be used by last(1) and ac(8) after they have 602 been converted to the new format using wtmpcvt(1). 603 60420100108: 605 Introduce the kernel thread "deadlock resolver" (which can be enabled 606 via the DEADLKRES option, see NOTES for more details) and the 607 sleepq_type() function for sleepqueues. 608 60920091202: 610 The rc.firewall and rc.firewall6 were unified, and 611 rc.firewall6 and rc.d/ip6fw were removed. 612 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc 613 variables are obsoleted. Instead, the following new rc 614 variables are added to rc.d/ipfw: 615 616 firewall_client_net_ipv6, firewall_simple_iif_ipv6, 617 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6, 618 firewall_simple_onet_ipv6, firewall_trusted_ipv6 619 620 The meanings correspond to the relevant IPv4 variables. 621 62220091125: 623 8.0-RELEASE. 624 62520091113: 626 The default terminal emulation for syscons(4) has been changed 627 from cons25 to xterm on all platforms except pc98. This means 628 that the /etc/ttys file needs to be updated to ensure correct 629 operation of applications on the console. 630 631 The terminal emulation style can be toggled per window by using 632 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration 633 options can be used to change the compile-time default back to 634 cons25. 635 636 To prevent graphical artifacts, make sure the TERM environment 637 variable is set to match the terminal emulation that is being 638 performed by syscons(4). 639 64020091109: 641 The layout of the structure ieee80211req_scan_result has changed. 642 Applications that require wireless scan results (e.g. ifconfig(8)) 643 from net80211 need to be recompiled. 644 645 Applications such as wpa_supplicant(8) may require a full world 646 build without using NO_CLEAN in order to get synchronized with the 647 new structure. 648 64920091025: 650 The iwn(4) driver has been updated to support the 5000 and 5150 series. 651 There's one kernel module for each firmware. Adding "device iwnfw" 652 to the kernel configuration file means including all three firmware 653 images inside the kernel. If you want to include just the one for 654 your wireless card, use the devices iwn4965fw, iwn5000fw or 655 iwn5150fw. 656 65720090926: 658 The rc.d/network_ipv6, IPv6 configuration script has been integrated 659 into rc.d/netif. The changes are the following: 660 661 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF 662 for IPv4. For aliases, $ifconfig_IF_aliasN should be used. 663 Note that both variables need the "inet6" keyword at the head. 664 665 Do not set $ipv6_network_interfaces manually if you do not 666 understand what you are doing. It is not needed in most cases. 667 668 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but 669 they are obsolete. 670 671 2. $ipv6_enable is obsolete. Use $ipv6_prefer and 672 "inet6 accept_rtadv" keyword in ifconfig(8) instead. 673 674 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and 675 all configured interfaces have "inet6 accept_rtadv" in the 676 $ifconfig_IF_ipv6. These are for backward compatibility. 677 678 3. A new variable $ipv6_prefer has been added. If NO, IPv6 679 functionality of interfaces with no corresponding 680 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag, 681 and the default address selection policy of ip6addrctl(8) 682 is the IPv4-preferred one (see rc.d/ip6addrctl for more details). 683 Note that if you want to configure IPv6 functionality on the 684 disabled interfaces after boot, first you need to clear the flag by 685 using ifconfig(8) like: 686 687 ifconfig em0 inet6 -ifdisabled 688 689 If YES, the default address selection policy is set as 690 IPv6-preferred. 691 692 The default value of $ipv6_prefer is NO. 693 694 4. If your system need to receive Router Advertisement messages, 695 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8) 696 scripts automatically invoke rtsol(8) when the interface becomes 697 UP. The Router Advertisement messages are used for SLAAC 698 (State-Less Address AutoConfiguration). 699 70020090922: 701 802.11s D3.03 support was committed. This is incompatible with the 702 previous code, which was based on D3.0. 703 70420090912: 705 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value 706 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to 707 control whether accepting Router Advertisement messages or not. 708 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and 709 a sysctl variable net.inet6.ip6.auto_linklocal is its default value. 710 The ifconfig(8) utility now supports these flags. 711 71220090910: 713 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for 714 mount(8) and -a option for df(1) to see them. 715 71620090825: 717 The old tunable hw.bus.devctl_disable has been superseded by 718 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be 719 replaced by hw.bus.devctl_queue=0. The default for this new tunable 720 is 1000. 721 72220090813: 723 Remove the option STOP_NMI. The default action is now to use NMI only 724 for KDB via the newly introduced function stop_cpus_hard() and 725 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64. 726 72720090803: 728 The stable/8 branch created in subversion. This corresponds to the 729 RELENG_8 branch in CVS. 730 73120090719: 732 Bump the shared library version numbers for all libraries that do not 733 use symbol versioning as part of the 8.0-RELEASE cycle. Bump 734 __FreeBSD_version to 800105. 735 73620090714: 737 Due to changes in the implementation of virtual network stack support, 738 all network-related kernel modules must be recompiled. As this change 739 breaks the ABI, bump __FreeBSD_version to 800104. 740 74120090713: 742 The TOE interface to the TCP syncache has been modified to remove 743 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. 744 The cxgb driver is the only TOE consumer affected by this change, and 745 needs to be recompiled along with the kernel. As this change breaks 746 the ABI, bump __FreeBSD_version to 800103. 747 74820090712: 749 Padding has been added to struct tcpcb, sackhint and tcpstat in 750 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst 751 maintaining the ABI. However, this change breaks the ABI, so bump 752 __FreeBSD_version to 800102. User space tools that rely on the size of 753 any of these structs (e.g. sockstat) need to be recompiled. 754 75520090630: 756 The NFS_LEGACYRPC option has been removed along with the old kernel 757 RPC implementation that this option selected. Kernel configurations 758 may need to be adjusted. 759 76020090629: 761 The network interface device nodes at /dev/net/<interface> have been 762 removed. All ioctl operations can be performed the normal way using 763 routing sockets. The kqueue functionality can generally be replaced 764 with routing sockets. 765 76620090628: 767 The documentation from the FreeBSD Documentation Project (Handbook, 768 FAQ, etc.) is now installed via packages by sysinstall(8) and under 769 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc. 770 77120090624: 772 The ABI of various structures related to the SYSV IPC API have been 773 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel 774 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to 775 800100. 776 77720090622: 778 Layout of struct vnet has changed as routing related variables were 779 moved to their own Vimage module. Modules need to be recompiled. Bump 780 __FreeBSD_version to 800099. 781 78220090619: 783 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024 784 respectively. As long as no more than 16 groups per process are used, 785 no changes should be visible. When more than 16 groups are used, old 786 binaries may fail if they call getgroups() or getgrouplist() with 787 statically sized storage. Recompiling will work around this, but 788 applications should be modified to use dynamically allocated storage 789 for group arrays as POSIX.1-2008 does not cap an implementation's 790 number of supported groups at NGROUPS_MAX+1 as previous versions did. 791 792 NFS and portalfs mounts may also be affected as the list of groups is 793 truncated to 16. Users of NFS who use more than 16 groups, should 794 take care that negative group permissions are not used on the exported 795 file systems as they will not be reliable unless a GSSAPI based 796 authentication method is used. 797 79820090616: 799 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This 800 option compiles in the support for adaptive spinning for lockmgrs 801 which want to enable it. The lockinit() function now accepts the flag 802 LK_ADAPTIVE in order to make the lock object subject to adaptive 803 spinning when both held in write and read mode. 804 80520090613: 806 The layout of the structure returned by IEEE80211_IOC_STA_INFO has 807 changed. User applications that use this ioctl need to be rebuilt. 808 80920090611: 810 The layout of struct thread has changed. Kernel and modules need to 811 be rebuilt. 812 81320090608: 814 The layout of structs ifnet, domain, protosw and vnet_net has changed. 815 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097. 816 81720090602: 818 window(1) has been removed from the base system. It can now be 819 installed from ports. The port is called misc/window. 820 82120090601: 822 The way we are storing and accessing `routing table' entries has 823 changed. Programs reading the FIB, like netstat, need to be 824 re-compiled. 825 82620090601: 827 A new netisr implementation has been added for FreeBSD 8. Network 828 file system modules, such as igmp, ipdivert, and others, should be 829 rebuilt. 830 Bump __FreeBSD_version to 800096. 831 83220090530: 833 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no 834 more valid. 835 83620090530: 837 Add VOP_ACCESSX(9). File system modules need to be rebuilt. 838 Bump __FreeBSD_version to 800094. 839 84020090529: 841 Add mnt_xflag field to 'struct mount'. File system modules need to be 842 rebuilt. 843 Bump __FreeBSD_version to 800093. 844 84520090528: 846 The compiling option ADAPTIVE_SX has been retired while it has been 847 introduced the option NO_ADAPTIVE_SX which handles the reversed logic. 848 The KPI for sx_init_flags() changes as accepting flags: 849 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has 850 been introduced in order to handle the reversed logic. 851 Bump __FreeBSD_version to 800092. 852 85320090527: 854 Add support for hierarchical jails. Remove global securelevel. 855 Bump __FreeBSD_version to 800091. 856 85720090523: 858 The layout of struct vnet_net has changed, therefore modules 859 need to be rebuilt. 860 Bump __FreeBSD_version to 800090. 861 86220090523: 863 The newly imported zic(8) produces a new format in the output. Please 864 run tzsetup(8) to install the newly created data to /etc/localtime. 865 86620090520: 867 The sysctl tree for the usb stack has renamed from hw.usb2.* to 868 hw.usb.* and is now consistent again with previous releases. 869 87020090520: 871 802.11 monitor mode support was revised and driver api's were changed. 872 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead 873 of DLT_IEEE802_11. No user-visible data structures were changed but 874 applications that use DLT_IEEE802_11 may require changes. 875 Bump __FreeBSD_version to 800088. 876 87720090430: 878 The layout of the following structs has changed: sysctl_oid, 879 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet, 880 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or 881 panics may be experienced. World rebuild is required for 882 correctly checking networking state from userland. 883 Bump __FreeBSD_version to 800085. 884 88520090429: 886 MLDv2 and Source-Specific Multicast (SSM) have been merged 887 to the IPv6 stack. VIMAGE hooks are in but not yet used. 888 The implementation of SSM within FreeBSD's IPv6 stack closely 889 follows the IPv4 implementation. 890 891 For kernel developers: 892 893 * The most important changes are that the ip6_output() and 894 ip6_input() paths no longer take the IN6_MULTI_LOCK, 895 and this lock has been downgraded to a non-recursive mutex. 896 897 * As with the changes to the IPv4 stack to support SSM, filtering 898 of inbound multicast traffic must now be performed by transport 899 protocols within the IPv6 stack. This does not apply to TCP and 900 SCTP, however, it does apply to UDP in IPv6 and raw IPv6. 901 902 * The KPIs used by IPv6 multicast are similar to those used by 903 the IPv4 stack, with the following differences: 904 * im6o_mc_filter() is analogous to imo_multicast_filter(). 905 * The legacy KAME entry points in6_joingroup and in6_leavegroup() 906 are shimmed to in6_mc_join() and in6_mc_leave() respectively. 907 * IN6_LOOKUP_MULTI() has been deprecated and removed. 908 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs 909 for MLDv1 have an additional 'timer' argument which is used to 910 jitter the initial membership report for the solicited-node 911 multicast membership on-link. 912 * This is not strictly needed for MLDv2, which already jitters 913 its report transmissions. However, the 'timer' argument is 914 preserved in case MLDv1 is active on the interface. 915 916 * The KAME linked-list based IPv6 membership implementation has 917 been refactored to use a vector similar to that used by the IPv4 918 stack. 919 Code which maintains a list of its own multicast memberships 920 internally, e.g. carp, has been updated to reflect the new 921 semantics. 922 923 * There is a known Lock Order Reversal (LOR) due to in6_setscope() 924 acquiring the IF_AFDATA_LOCK and being called within ip6_output(). 925 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an 926 implementation constraint which needs to be addressed in HEAD. 927 928 For application developers: 929 930 * The changes are broadly similar to those made for the IPv4 931 stack. 932 933 * The use of IPv4 and IPv6 multicast socket options on the same 934 socket, using mapped addresses, HAS NOT been tested or supported. 935 936 * There are a number of issues with the implementation of various 937 IPv6 multicast APIs which need to be resolved in the API surface 938 before the implementation is fully compatible with KAME userland 939 use, and these are mostly to do with interface index treatment. 940 941 * The literature available discusses the use of either the delta / ASM 942 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API 943 using setsourcefilter(3)/getsourcefilter(3). For more information 944 please refer to RFC 3768, 'Socket Interface Extensions for 945 Multicast Source Filters'. 946 947 * Applications which use the published RFC 3678 APIs should be fine. 948 949 For systems administrators: 950 951 * The mtest(8) utility has been refactored to support IPv6, in 952 addition to IPv4. Interface addresses are no longer accepted 953 as arguments, their names must be used instead. The utility 954 will map the interface name to its first IPv4 address as 955 returned by getifaddrs(3). 956 957 * The ifmcstat(8) utility has also been updated to print the MLDv2 958 endpoint state and source filter lists via sysctl(3). 959 960 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable 961 loopback of IPv6 multicast datagrams by default; it defaults to 1 962 to preserve the existing behaviour. Disabling multicast loopback is 963 recommended for optimal system performance. 964 965 * The IPv6 MROUTING code has been changed to examine this sysctl 966 instead of attempting to perform a group lookup before looping 967 back forwarded datagrams. 968 969 Bump __FreeBSD_version to 800084. 970 97120090422: 972 Implement low-level Bluetooth HCI API. 973 Bump __FreeBSD_version to 800083. 974 97520090419: 976 The layout of struct malloc_type, used by modules to register new 977 memory allocation types, has changed. Most modules will need to 978 be rebuilt or panics may be experienced. 979 Bump __FreeBSD_version to 800081. 980 98120090415: 982 Anticipate overflowing inp_flags - add inp_flags2. 983 This changes most offsets in inpcb, so checking v4 connection 984 state will require a world rebuild. 985 Bump __FreeBSD_version to 800080. 986 98720090415: 988 Add an llentry to struct route and struct route_in6. Modules 989 embedding a struct route will need to be recompiled. 990 Bump __FreeBSD_version to 800079. 991 99220090414: 993 The size of rt_metrics_lite and by extension rtentry has changed. 994 Networking administration apps will need to be recompiled. 995 The route command now supports show as an alias for get, weighting 996 of routes, sticky and nostick flags to alter the behavior of stateful 997 load balancing. 998 Bump __FreeBSD_version to 800078. 999 100020090408: 1001 Do not use Giant for kbdmux(4) locking. This is wrong and 1002 apparently causing more problems than it solves. This will 1003 re-open the issue where interrupt handlers may race with 1004 kbdmux(4) in polling mode. Typical symptoms include (but 1005 not limited to) duplicated and/or missing characters when 1006 low level console functions (such as gets) are used while 1007 interrupts are enabled (for example geli password prompt, 1008 mountroot prompt etc.). Disabling kbdmux(4) may help. 1009 101020090407: 1011 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed; 1012 kernel modules referencing any of the above need to be recompiled. 1013 Bump __FreeBSD_version to 800075. 1014 101520090320: 1016 GEOM_PART has become the default partition slicer for storage devices, 1017 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It 1018 introduces some changes: 1019 1020 MSDOS/EBR: the devices created from MSDOS extended partition entries 1021 (EBR) can be named differently than with GEOM_MBR and are now symlinks 1022 to devices with offset-based names. fstabs may need to be modified. 1023 1024 BSD: the "geometry does not match label" warning is harmless in most 1025 cases but it points to problems in file system misalignment with 1026 disk geometry. The "c" partition is now implicit, covers the whole 1027 top-level drive and cannot be (mis)used by users. 1028 1029 General: Kernel dumps are now not allowed to be written to devices 1030 whose partition types indicate they are meant to be used for file 1031 systems (or, in case of MSDOS partitions, as something else than 1032 the "386BSD" type). 1033 1034 Most of these changes date approximately from 200812. 1035 103620090319: 1037 The uscanner(4) driver has been removed from the kernel. This follows 1038 Linux removing theirs in 2.6 and making libusb the default interface 1039 (supported by sane). 1040 104120090319: 1042 The multicast forwarding code has been cleaned up. netstat(1) 1043 only relies on KVM now for printing bandwidth upcall meters. 1044 The IPv4 and IPv6 modules are split into ip_mroute_mod and 1045 ip6_mroute_mod respectively. The config(5) options for statically 1046 compiling this code remain the same, i.e. 'options MROUTING'. 1047 104820090315: 1049 Support for the IFF_NEEDSGIANT network interface flag has been 1050 removed, which means that non-MPSAFE network device drivers are no 1051 longer supported. In particular, if_ar, if_sr, and network device 1052 drivers from the old (legacy) USB stack can no longer be built or 1053 used. 1054 105520090313: 1056 POSIX.1 Native Language Support (NLS) has been enabled in libc and 1057 a bunch of new language catalog files have also been added. 1058 This means that some common libc messages are now localized and 1059 they depend on the LC_MESSAGES environmental variable. 1060 106120090313: 1062 The k8temp(4) driver has been renamed to amdtemp(4) since 1063 support for Family 10 and Family 11 CPU families was added. 1064 106520090309: 1066 IGMPv3 and Source-Specific Multicast (SSM) have been merged 1067 to the IPv4 stack. VIMAGE hooks are in but not yet used. 1068 1069 For kernel developers, the most important changes are that the 1070 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(), 1071 and this lock has been downgraded to a non-recursive mutex. 1072 1073 Transport protocols (UDP, Raw IP) are now responsible for filtering 1074 inbound multicast traffic according to group membership and source 1075 filters. The imo_multicast_filter() KPI exists for this purpose. 1076 Transports which do not use multicast (SCTP, TCP) already reject 1077 multicast by default. Forwarding and receive performance may improve 1078 as a mutex acquisition is no longer needed in the ip_input() 1079 low-level input path. in_addmulti() and in_delmulti() are shimmed 1080 to new KPIs which exist to support SSM in-kernel. 1081 1082 For application developers, it is recommended that loopback of 1083 multicast datagrams be disabled for best performance, as this 1084 will still cause the lock to be taken for each looped-back 1085 datagram transmission. The net.inet.ip.mcast.loop sysctl may 1086 be tuned to 0 to disable loopback by default; it defaults to 1 1087 to preserve the existing behaviour. 1088 1089 For systems administrators, to obtain best performance with 1090 multicast reception and multiple groups, it is always recommended 1091 that a card with a suitably precise hash filter is used. Hash 1092 collisions will still result in the lock being taken within the 1093 transport protocol input path to check group membership. 1094 1095 If deploying FreeBSD in an environment with IGMP snooping switches, 1096 it is recommended that the net.inet.igmp.sendlocal sysctl remain 1097 enabled; this forces 224.0.0.0/24 group membership to be announced 1098 via IGMP. 1099 1100 The size of 'struct igmpstat' has changed; netstat needs to be 1101 recompiled to reflect this. 1102 Bump __FreeBSD_version to 800070. 1103 110420090309: 1105 libusb20.so.1 is now installed as libusb.so.1 and the ports system 1106 updated to use it. This requires a buildworld/installworld in order to 1107 update the library and dependencies (usbconfig, etc). Its advisable to 1108 rebuild all ports which uses libusb. More specific directions are given 1109 in the ports collection UPDATING file. Any /etc/libmap.conf entries for 1110 libusb are no longer required and can be removed. 1111 111220090302: 1113 A workaround is committed to allow the creation of System V shared 1114 memory segment of size > 2 GB on the 64-bit architectures. 1115 Due to a limitation of the existing ABI, the shm_segsz member 1116 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is 1117 wrong for large segments. Note that limits must be explicitly 1118 raised to allow such segments to be created. 1119 112020090301: 1121 The layout of struct ifnet has changed, requiring a rebuild of all 1122 network device driver modules. 1123 112420090227: 1125 The /dev handling for the new USB stack has changed, a 1126 buildworld/installworld is required for libusb20. 1127 112820090223: 1129 The new USB2 stack has now been permanently moved in and all kernel and 1130 module names reverted to their previous values (eg, usb, ehci, ohci, 1131 ums, ...). The old usb stack can be compiled in by prefixing the name 1132 with the letter 'o', the old usb modules have been removed. 1133 Updating entry 20090216 for xorg and 20090215 for libmap may still 1134 apply. 1135 113620090217: 1137 The rc.conf(5) option if_up_delay has been renamed to 1138 defaultroute_delay to better reflect its purpose. If you have 1139 customized this setting in /etc/rc.conf you need to update it to 1140 use the new name. 1141 114220090216: 1143 xorg 7.4 wants to configure its input devices via hald which does not 1144 yet work with USB2. If the keyboard/mouse does not work in xorg then 1145 add 1146 Option "AllowEmptyInput" "off" 1147 to your ServerLayout section. This will cause X to use the configured 1148 kbd and mouse sections from your xorg.conf. 1149 115020090215: 1151 The GENERIC kernels for all architectures now default to the new USB2 1152 stack. No kernel config options or code have been removed so if a 1153 problem arises please report it and optionally revert to the old USB 1154 stack. If you are loading USB kernel modules or have a custom kernel 1155 that includes GENERIC then ensure that usb names are also changed over, 1156 eg uftdi -> usb2_serial_ftdi. 1157 1158 Older programs linked against the ports libusb 0.1 need to be 1159 redirected to the new stack's libusb20. /etc/libmap.conf can 1160 be used for this: 1161 # Map old usb library to new one for usb2 stack 1162 libusb-0.1.so.8 libusb20.so.1 1163 116420090209: 1165 All USB ethernet devices now attach as interfaces under the name ueN 1166 (eg. ue0). This is to provide a predictable name as vendors often 1167 change usb chipsets in a product without notice. 1168 116920090203: 1170 The ichsmb(4) driver has been changed to require SMBus slave 1171 addresses be left-justified (xxxxxxx0b) rather than right-justified. 1172 All of the other SMBus controller drivers require left-justified 1173 slave addresses, so this change makes all the drivers provide the 1174 same interface. 1175 117620090201: 1177 INET6 statistics (struct ip6stat) was updated. 1178 netstat(1) needs to be recompiled. 1179 118020090119: 1181 NTFS has been removed from GENERIC kernel on amd64 to match 1182 GENERIC on i386. Should not cause any issues since mount_ntfs(8) 1183 will load ntfs.ko module automatically when NTFS support is 1184 actually needed, unless ntfs.ko is not installed or security 1185 level prohibits loading kernel modules. If either is the case, 1186 "options NTFS" has to be added into kernel config. 1187 118820090115: 1189 TCP Appropriate Byte Counting (RFC 3465) support added to kernel. 1190 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to 1191 800061. User space tools that rely on the size of struct tcpcb in 1192 tcp_var.h (e.g. sockstat) need to be recompiled. 1193 119420081225: 1195 ng_tty(4) module updated to match the new TTY subsystem. 1196 Due to API change, user-level applications must be updated. 1197 New API support added to mpd5 CVS and expected to be present 1198 in next mpd5.3 release. 1199 120020081219: 1201 With __FreeBSD_version 800060 the makefs tool is part of 1202 the base system (it was a port). 1203 120420081216: 1205 The afdata and ifnet locks have been changed from mutexes to 1206 rwlocks, network modules will need to be re-compiled. 1207 120820081214: 1209 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite. 1210 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated. 1211 The new code reduced struct rtentry{} by 16 bytes on 32-bit 1212 architecture and 40 bytes on 64-bit architecture. The userland 1213 applications "arp" and "ndp" have been updated accordingly. 1214 The output from "netstat -r" shows only routing entries and 1215 none of the L2 information. 1216 121720081130: 1218 __FreeBSD_version 800057 marks the switchover from the 1219 binary ath hal to source code. Users must add the line: 1220 1221 options AH_SUPPORT_AR5416 1222 1223 to their kernel config files when specifying: 1224 1225 device ath_hal 1226 1227 The ath_hal module no longer exists; the code is now compiled 1228 together with the driver in the ath module. It is now 1229 possible to tailor chip support (i.e. reduce the set of chips 1230 and thereby the code size); consult ath_hal(4) for details. 1231 123220081121: 1233 __FreeBSD_version 800054 adds memory barriers to 1234 <machine/atomic.h>, new interfaces to ifnet to facilitate 1235 multiple hardware transmit queues for cards that support 1236 them, and a lock-less ring-buffer implementation to 1237 enable drivers to more efficiently manage queueing of 1238 packets. 1239 124020081117: 1241 A new version of ZFS (version 13) has been merged to -HEAD. 1242 This version has zpool attribute "listsnapshots" off by 1243 default, which means "zfs list" does not show snapshots, 1244 and is the same as Solaris behavior. 1245 124620081028: 1247 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled. 1248 124920081009: 1250 The uhci, ohci, ehci and slhci USB Host controller drivers have 1251 been put into separate modules. If you load the usb module 1252 separately through loader.conf you will need to load the 1253 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0 1254 controller add the following to loader.conf: 1255 1256 uhci_load="YES" 1257 ehci_load="YES" 1258 125920081009: 1260 The ABI used by the PMC toolset has changed. Please keep 1261 userland (libpmc(3)) and the kernel module (hwpmc(4)) in 1262 sync. 1263 126420081009: 1265 atapci kernel module now includes only generic PCI ATA 1266 driver. AHCI driver moved to ataahci kernel module. 1267 All vendor-specific code moved into separate kernel modules: 1268 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek, 1269 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron, 1270 atamarvell, atamicron, atanational, atanetcell, atanvidia, 1271 atapromise, ataserverworks, atasiliconimage, atasis, atavia 1272 127320080820: 1274 The TTY subsystem of the kernel has been replaced by a new 1275 implementation, which provides better scalability and an 1276 improved driver model. Most common drivers have been migrated to 1277 the new TTY subsystem, while others have not. The following 1278 drivers have not yet been ported to the new TTY layer: 1279 1280 PCI/ISA: 1281 cy, digi, rc, rp, sio 1282 1283 USB: 1284 ubser, ucycom 1285 1286 Line disciplines: 1287 ng_h4, ng_tty, ppp, sl, snp 1288 1289 Adding these drivers to your kernel configuration file shall 1290 cause compilation to fail. 1291 129220080818: 1293 ntpd has been upgraded to 4.2.4p5. 1294 129520080801: 1296 OpenSSH has been upgraded to 5.1p1. 1297 1298 For many years, FreeBSD's version of OpenSSH preferred DSA 1299 over RSA for host and user authentication keys. With this 1300 upgrade, we've switched to the vendor's default of RSA over 1301 DSA. This may cause upgraded clients to warn about unknown 1302 host keys even for previously known hosts. Users should 1303 follow the usual procedure for verifying host keys before 1304 accepting the RSA key. 1305 1306 This can be circumvented by setting the "HostKeyAlgorithms" 1307 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh 1308 command line. 1309 1310 Please note that the sequence of keys offered for 1311 authentication has been changed as well. You may want to 1312 specify IdentityFile in a different order to revert this 1313 behavior. 1314 131520080713: 1316 The sio(4) driver has been removed from the i386 and amd64 1317 kernel configuration files. This means uart(4) is now the 1318 default serial port driver on those platforms as well. 1319 1320 To prevent collisions with the sio(4) driver, the uart(4) driver 1321 uses different names for its device nodes. This means the 1322 onboard serial port will now most likely be called "ttyu0" 1323 instead of "ttyd0". You may need to reconfigure applications to 1324 use the new device names. 1325 1326 When using the serial port as a boot console, be sure to update 1327 /boot/device.hints and /etc/ttys before booting the new kernel. 1328 If you forget to do so, you can still manually specify the hints 1329 at the loader prompt: 1330 1331 set hint.uart.0.at="isa" 1332 set hint.uart.0.port="0x3F8" 1333 set hint.uart.0.flags="0x10" 1334 set hint.uart.0.irq="4" 1335 boot -s 1336 133720080609: 1338 The gpt(8) utility has been removed. Use gpart(8) to partition 1339 disks instead. 1340 134120080603: 1342 The version that Linuxulator emulates was changed from 2.4.2 1343 to 2.6.16. If you experience any problems with Linux binaries 1344 please try to set sysctl compat.linux.osrelease to 2.4.2 and 1345 if it fixes the problem contact emulation mailing list. 1346 134720080525: 1348 ISDN4BSD (I4B) was removed from the src tree. You may need to 1349 update a your kernel configuration and remove relevant entries. 1350 135120080509: 1352 I have checked in code to support multiple routing tables. 1353 See the man pages setfib(1) and setfib(2). 1354 This is a hopefully backwards compatible version, 1355 but to make use of it you need to compile your kernel 1356 with options ROUTETABLES=2 (or more up to 16). 1357 135820080420: 1359 The 802.11 wireless support was redone to enable multi-bss 1360 operation on devices that are capable. The underlying device 1361 is no longer used directly but instead wlanX devices are 1362 cloned with ifconfig. This requires changes to rc.conf files. 1363 For example, change: 1364 ifconfig_ath0="WPA DHCP" 1365 to 1366 wlans_ath0=wlan0 1367 ifconfig_wlan0="WPA DHCP" 1368 see rc.conf(5) for more details. In addition, mergemaster of 1369 /etc/rc.d is highly recommended. Simultaneous update of userland 1370 and kernel wouldn't hurt either. 1371 1372 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta 1373 modules were merged into the base wlan module. All references 1374 to these modules (e.g. in kernel config files) must be removed. 1375 137620080408: 1377 psm(4) has gained write(2) support in native operation level. 1378 Arbitrary commands can be written to /dev/psm%d and status can 1379 be read back from it. Therefore, an application is responsible 1380 for status validation and error recovery. It is a no-op in 1381 other operation levels. 1382 138320080312: 1384 Support for KSE threading has been removed from the kernel. To 1385 run legacy applications linked against KSE libmap.conf may 1386 be used. The following libmap.conf may be used to ensure 1387 compatibility with any prior release: 1388 1389 libpthread.so.1 libthr.so.1 1390 libpthread.so.2 libthr.so.2 1391 libkse.so.3 libthr.so.3 1392 139320080301: 1394 The layout of struct vmspace has changed. This affects libkvm 1395 and any executables that link against libkvm and use the 1396 kvm_getprocs() function. In particular, but not exclusively, 1397 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1). 1398 The effects are minimal, but it's advisable to upgrade world 1399 nonetheless. 1400 140120080229: 1402 The latest em driver no longer has support in it for the 1403 82575 adapter, this is now moved to the igb driver. The 1404 split was done to make new features that are incompatible 1405 with older hardware easier to do. 1406 140720080220: 1408 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4), 1409 likewise the kernel option is now GEOM_LINUX_LVM. 1410 141120080211: 1412 The default NFS mount mode has changed from UDP to TCP for 1413 increased reliability. If you rely on (insecurely) NFS 1414 mounting across a firewall you may need to update your 1415 firewall rules. 1416 141720080208: 1418 Belatedly note the addition of m_collapse for compacting 1419 mbuf chains. 1420 142120080126: 1422 The fts(3) structures have been changed to use adequate 1423 integer types for their members and so to be able to cope 1424 with huge file trees. The old fts(3) ABI is preserved 1425 through symbol versioning in libc, so third-party binaries 1426 using fts(3) should still work, although they will not take 1427 advantage of the extended types. At the same time, some 1428 third-party software might fail to build after this change 1429 due to unportable assumptions made in its source code about 1430 fts(3) structure members. Such software should be fixed 1431 by its vendor or, in the worst case, in the ports tree. 1432 FreeBSD_version 800015 marks this change for the unlikely 1433 case that a portable fix is impossible. 1434 143520080123: 1436 To upgrade to -current after this date, you must be running 1437 FreeBSD not older than 6.0-RELEASE. Upgrading to -current 1438 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems. 1439 144020071128: 1441 The ADAPTIVE_GIANT kernel option has been retired because its 1442 functionality is the default now. 1443 144420071118: 1445 The AT keyboard emulation of sunkbd(4) has been turned on 1446 by default. In order to make the special symbols of the Sun 1447 keyboards driven by sunkbd(4) work under X these now have 1448 to be configured the same way as Sun USB keyboards driven 1449 by ukbd(4) (which also does AT keyboard emulation), f.e.: 1450 1451 Option "XkbLayout" "us" 1452 Option "XkbRules" "xorg" 1453 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us" 1454 145520071024: 1456 It has been decided that it is desirable to provide ABI 1457 backwards compatibility to the FreeBSD 4/5/6 versions of the 1458 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was 1459 broken with the introduction of PCI domain support (see the 1460 20070930 entry). Unfortunately, this required the ABI of 1461 PCIOCGETCONF to be broken again in order to be able to 1462 provide backwards compatibility to the old version of that 1463 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled 1464 again. As for prominent ports this affects neither pciutils 1465 nor xorg-server this time, the hal port needs to be rebuilt 1466 however. 1467 146820071020: 1469 The misnamed kthread_create() and friends have been renamed 1470 to kproc_create() etc. Many of the callers already 1471 used kproc_start().. 1472 I will return kthread_create() and friends in a while 1473 with implementations that actually create threads, not procs. 1474 Renaming corresponds with version 800002. 1475 147620071010: 1477 RELENG_7 branched. 1478 1479COMMON ITEMS: 1480 1481 General Notes 1482 ------------- 1483 Avoid using make -j when upgrading. While generally safe, there are 1484 sometimes problems using -j to upgrade. If your upgrade fails with 1485 -j, please try again without -j. From time to time in the past there 1486 have been problems using -j with buildworld and/or installworld. This 1487 is especially true when upgrading between "distant" versions (eg one 1488 that cross a major release boundary or several minor releases, or when 1489 several months have passed on the -current branch). 1490 1491 Sometimes, obscure build problems are the result of environment 1492 poisoning. This can happen because the make utility reads its 1493 environment when searching for values for global variables. To run 1494 your build attempts in an "environmental clean room", prefix all make 1495 commands with 'env -i '. See the env(1) manual page for more details. 1496 1497 When upgrading from one major version to another it is generally best 1498 to upgrade to the latest code in the currently installed branch first, 1499 then do an upgrade to the new branch. This is the best-tested upgrade 1500 path, and has the highest probability of being successful. Please try 1501 this approach before reporting problems with a major version upgrade. 1502 1503 ZFS notes 1504 --------- 1505 When upgrading the boot ZFS pool to a new version, always follow 1506 these two steps: 1507 1508 1.) recompile and reinstall the ZFS boot loader and boot block 1509 (this is part of "make buildworld" and "make installworld") 1510 1511 2.) update the ZFS boot block on your boot drive 1512 1513 The following example updates the ZFS boot block on the first 1514 partition (freebsd-boot) of a GPT partitioned drive ad0: 1515 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0" 1516 1517 Non-boot pools do not need these updates. 1518 1519 To build a kernel 1520 ----------------- 1521 If you are updating from a prior version of FreeBSD (even one just 1522 a few days old), you should follow this procedure. It is the most 1523 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld, 1524 1525 make kernel-toolchain 1526 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE 1527 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE 1528 1529 To test a kernel once 1530 --------------------- 1531 If you just want to boot a kernel once (because you are not sure 1532 if it works, or if you want to boot a known bad kernel to provide 1533 debugging information) run 1534 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel 1535 nextboot -k testkernel 1536 1537 To just build a kernel when you know that it won't mess you up 1538 -------------------------------------------------------------- 1539 This assumes you are already running a CURRENT system. Replace 1540 ${arch} with the architecture of your machine (e.g. "i386", 1541 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc). 1542 1543 cd src/sys/${arch}/conf 1544 config KERNEL_NAME_HERE 1545 cd ../compile/KERNEL_NAME_HERE 1546 make depend 1547 make 1548 make install 1549 1550 If this fails, go to the "To build a kernel" section. 1551 1552 To rebuild everything and install it on the current system. 1553 ----------------------------------------------------------- 1554 # Note: sometimes if you are running current you gotta do more than 1555 # is listed here if you are upgrading from a really old current. 1556 1557 <make sure you have good level 0 dumps> 1558 make buildworld 1559 make kernel KERNCONF=YOUR_KERNEL_HERE 1560 [1] 1561 <reboot in single user> [3] 1562 mergemaster -p [5] 1563 make installworld 1564 mergemaster -i [4] 1565 make delete-old [6] 1566 <reboot> 1567 1568 1569 To cross-install current onto a separate partition 1570 -------------------------------------------------- 1571 # In this approach we use a separate partition to hold 1572 # current's root, 'usr', and 'var' directories. A partition 1573 # holding "/", "/usr" and "/var" should be about 2GB in 1574 # size. 1575 1576 <make sure you have good level 0 dumps> 1577 <boot into -stable> 1578 make buildworld 1579 make buildkernel KERNCONF=YOUR_KERNEL_HERE 1580 <maybe newfs current's root partition> 1581 <mount current's root partition on directory ${CURRENT_ROOT}> 1582 make installworld DESTDIR=${CURRENT_ROOT} 1583 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd 1584 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT} 1585 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd 1586 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition> 1587 <reboot into current> 1588 <do a "native" rebuild/install as described in the previous section> 1589 <maybe install compatibility libraries from ports/misc/compat*> 1590 <reboot> 1591 1592 1593 To upgrade in-place from 8.x-stable to current 1594 ---------------------------------------------- 1595 <make sure you have good level 0 dumps> 1596 make buildworld [9] 1597 make kernel KERNCONF=YOUR_KERNEL_HERE [8] 1598 [1] 1599 <reboot in single user> [3] 1600 mergemaster -p [5] 1601 make installworld 1602 mergemaster -i [4] 1603 make delete-old [6] 1604 <reboot> 1605 1606 Make sure that you've read the UPDATING file to understand the 1607 tweaks to various things you need. At this point in the life 1608 cycle of current, things change often and you are on your own 1609 to cope. The defaults can also change, so please read ALL of 1610 the UPDATING entries. 1611 1612 Also, if you are tracking -current, you must be subscribed to 1613 freebsd-current@freebsd.org. Make sure that before you update 1614 your sources that you have read and understood all the recent 1615 messages there. If in doubt, please track -stable which has 1616 much fewer pitfalls. 1617 1618 [1] If you have third party modules, such as vmware, you 1619 should disable them at this point so they don't crash your 1620 system on reboot. 1621 1622 [3] From the bootblocks, boot -s, and then do 1623 fsck -p 1624 mount -u / 1625 mount -a 1626 cd src 1627 adjkerntz -i # if CMOS is wall time 1628 Also, when doing a major release upgrade, it is required that 1629 you boot into single user mode to do the installworld. 1630 1631 [4] Note: This step is non-optional. Failure to do this step 1632 can result in a significant reduction in the functionality of the 1633 system. Attempting to do it by hand is not recommended and those 1634 that pursue this avenue should read this file carefully, as well 1635 as the archives of freebsd-current and freebsd-hackers mailing lists 1636 for potential gotchas. The -U option is also useful to consider. 1637 See mergemaster(8) for more information. 1638 1639 [5] Usually this step is a noop. However, from time to time 1640 you may need to do this if you get unknown user in the following 1641 step. It never hurts to do it all the time. You may need to 1642 install a new mergemaster (cd src/usr.sbin/mergemaster && make 1643 install) after the buildworld before this step if you last updated 1644 from current before 20020224 or from -stable before 20020408. 1645 1646 [6] This only deletes old files and directories. Old libraries 1647 can be deleted by "make delete-old-libs", but you have to make 1648 sure that no program is using those libraries anymore. 1649 1650 [8] In order to have a kernel that can run the 4.x binaries needed to 1651 do an installworld, you must include the COMPAT_FREEBSD4 option in 1652 your kernel. Failure to do so may leave you with a system that is 1653 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is 1654 required to run the 5.x binaries on more recent kernels. And so on 1655 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7. 1656 1657 Make sure that you merge any new devices from GENERIC since the 1658 last time you updated your kernel config file. 1659 1660 [9] When checking out sources, you must include the -P flag to have 1661 cvs prune empty directories. 1662 1663 If CPUTYPE is defined in your /etc/make.conf, make sure to use the 1664 "?=" instead of the "=" assignment operator, so that buildworld can 1665 override the CPUTYPE if it needs to. 1666 1667 MAKEOBJDIRPREFIX must be defined in an environment variable, and 1668 not on the command line, or in /etc/make.conf. buildworld will 1669 warn if it is improperly defined. 1670FORMAT: 1671 1672This file contains a list, in reverse chronological order, of major 1673breakages in tracking -current. It is not guaranteed to be a complete 1674list of such breakages, and only contains entries since October 10, 2007. 1675If you need to see UPDATING entries from before that date, you will need 1676to fetch an UPDATING file from an older FreeBSD release. 1677 1678Copyright information: 1679 1680Copyright 1998-2009 M. Warner Losh. All Rights Reserved. 1681 1682Redistribution, publication, translation and use, with or without 1683modification, in full or in part, in any form or format of this 1684document are permitted without further permission from the author. 1685 1686THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR 1687IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 1688WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 1689DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT, 1690INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 1691(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 1692SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 1693HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 1694STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 1695IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 1696POSSIBILITY OF SUCH DAMAGE. 1697 1698Contact Warner Losh if you have any questions about your use of 1699this document. 1700 1701$FreeBSD: head/UPDATING 241955 2012-10-23 16:33:43Z andre $ 1702