UPDATING revision 249201
1207753SmmUpdating Information for FreeBSD current users 2207753Smm 3207753SmmThis file is maintained and copyrighted by M. Warner Losh <imp@freebsd.org>. 4207753SmmSee end of file for further details. For commonly done items, please see the 5207753SmmCOMMON ITEMS: section later in the file. These instructions assume that you 6207753Smmbasically know what you are doing. If not, then please consult the FreeBSD 7207753Smmhandbook: 8207753Smm 9207753Smm http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html 10207753Smm 11207753SmmItems affecting the ports and packages system can be found in 12207753Smm/usr/ports/UPDATING. Please read that file before running portupgrade. 13207753Smm 14207753SmmNOTE TO PEOPLE WHO THINK THAT FreeBSD 10.x IS SLOW: 15207753Smm FreeBSD 10.x has many debugging features turned on, in both the kernel 16207753Smm and userland. These features attempt to detect incorrect use of 17207753Smm system primitives, and encourage loud failure through extra sanity 18207753Smm checking and fail stop semantics. They also substantially impact 19207753Smm system performance. If you want to do performance measurement, 20207753Smm benchmarking, and optimization, you'll want to turn them off. This 21207753Smm includes various WITNESS- related kernel options, INVARIANTS, malloc 22207753Smm debugging flags in userland, and various verbose features in the 23207753Smm kernel. Many developers choose to disable these features on build 24207753Smm machines to maximize performance. (To completely disable malloc 25207753Smm debugging, define MALLOC_PRODUCTION in /etc/make.conf, or to merely 26207753Smm disable the most expensive debugging functionality run 27207753Smm "ln -s 'abort:false,junk:false' /etc/malloc.conf".) 28207753Smm 29207753Smm20130404: 30207753Smm Legacy ATA stack, disabled and replaced by new CAM-based one since 31207753Smm FreeBSD 9.0, completely removed from the sources. Kernel modules 32207753Smm atadisk and atapi*, user-level tools atacontrol and burncd are 33207753Smm removed. Kernel option `options ATA_CAM` is now permanently enabled 34207753Smm and removed. 35207753Smm 36207753Smm20130308: 37207753Smm CTL_DISABLE has also been added to the sparc64 GENERIC (for further 38207753Smm information, see the respective 20130304 entry). 39207753Smm 40207753Smm20130304: 41207753Smm Recent commits to callout(9) changed the size of struct callout, 42207753Smm so the KBI is probably heavily disturbed. Also, some functions 43207753Smm in callout(9)/sleep(9)/sleepqueue(9)/condvar(9) KPIs were replaced 44207753Smm by macros. Every kernel module using it won't load, so rebuild 45207753Smm is requested. 46207753Smm 47207753Smm The ctl device has been re-enabled in GENERIC for i386 and amd64, 48207753Smm but does not initialize by default (because of the new CTL_DISABLE 49207753Smm option) to save memory. To re-enable it, remove the CTL_DISABLE 50207753Smm option from the kernel config file or set kern.cam.ctl.disable=0 51 in /boot/loader.conf. 52 5320130301: 54 The ctl device has been disabled in GENERIC for i386 and amd64. 55 This was done due to the extra memory being allocated at system 56 initialisation time by the ctl driver which was only used if 57 a CAM target device was created. This makes a FreeBSD system 58 unusable on 128MB or less of RAM. 59 6020130208: 61 A new compression method (lz4) has been merged to -HEAD. Please 62 refer to zpool-features(7) for more information. 63 64 Please refer to the "ZFS notes" section of this file for information 65 on upgrading boot ZFS pools. 66 6720130129: 68 A BSD-licensed patch(1) variant has been added and is installed 69 as bsdpatch, being the GNU version the default patch. 70 To inverse the logic and use the BSD-licensed one as default, 71 while having the GNU version installed as gnupatch, rebuild 72 and install world with the WITH_BSD_PATCH knob set. 73 7420130118: 75 The install(1) option -M has changed meaning and now takes an 76 argument that is a file or path to append logs to. In the 77 unlikely event that -M was the last option on the command line 78 and the command line contained at least two files and a target 79 directory the first file will have logs appended to it. The -M 80 option served little practical purpose in the last decade so its 81 use is expected to be extremely rare. 82 8320121223: 84 After switching to Clang as the default compiler some users of ZFS 85 on i386 systems started to experience stack overflow kernel panics. 86 Please consider using 'options KSTACK_PAGES=4' in such configurations. 87 8820121222: 89 GEOM_LABEL now mangles label names read from file system metadata. 90 Mangling affect labels containing spaces, non-printable characters, 91 '%' or '"'. Device names in /etc/fstab and other places may need to 92 be updated. 93 9420121217: 95 By default, only the 10 most recent kernel dumps will be saved. To 96 restore the previous behaviour (no limit on the number of kernel dumps 97 stored in the dump directory) add the following line to /etc/rc.conf: 98 99 savecore_flags="" 100 10120121201: 102 With the addition of auditdistd(8), a new auditdistd user is now 103 depended on during installworld. "mergemaster -p" can be used to add 104 the user prior to installworld, as documented in the handbook. 105 10620121117: 107 The sin6_scope_id member variable in struct sockaddr_in6 is now 108 filled by the kernel before passing the structure to the userland via 109 sysctl or routing socket. This means the KAME-specific embedded scope 110 id in sin6_addr.s6_addr[2] is always cleared in userland application. 111 This behavior can be controlled by net.inet6.ip6.deembed_scopeid. 112 __FreeBSD_version is bumped to 1000025. 113 11420121105: 115 On i386 and amd64 systems WITH_CLANG_IS_CC is now the default. 116 This means that the world and kernel will be compiled with clang 117 and that clang will be installed as /usr/bin/cc, /usr/bin/c++, 118 and /usr/bin/cpp. To disable this behavior and revert to building 119 with gcc, compile with WITHOUT_CLANG_IS_CC. 120 12120121102: 122 The IPFIREWALL_FORWARD kernel option has been removed. Its 123 functionality now turned on by default. 124 12520121023: 126 The ZERO_COPY_SOCKET kernel option has been removed and 127 split into SOCKET_SEND_COW and SOCKET_RECV_PFLIP. 128 NB: SOCKET_SEND_COW uses the VM page based copy-on-write 129 mechanism which is not safe and may result in kernel crashes. 130 NB: The SOCKET_RECV_PFLIP mechanism is useless as no current 131 driver supports disposeable external page sized mbuf storage. 132 Proper replacements for both zero-copy mechanisms are under 133 consideration and will eventually lead to complete removal 134 of the two kernel options. 135 13620121023: 137 The IPv4 network stack has been converted to network byte 138 order. The following modules need to be recompiled together 139 with kernel: carp(4), divert(4), gif(4), siftr(4), gre(4), 140 pf(4), ipfw(4), ng_ipfw(4), stf(4). 141 14220121022: 143 Support for non-MPSAFE filesystems was removed from VFS. The 144 VFS_VERSION was bumped, all filesystem modules shall be 145 recompiled. 146 14720121018: 148 All the non-MPSAFE filesystems have been disconnected from 149 the build. The full list includes: codafs, hpfs, ntfs, nwfs, 150 portalfs, smbfs, xfs. 151 15220121016: 153 The interface cloning API and ABI has changed. The following 154 modules need to be recompiled together with kernel: 155 ipfw(4), pfsync(4), pflog(4), usb(4), wlan(4), stf(4), 156 vlan(4), disc(4), edsc(4), if_bridge(4), gif(4), tap(4), 157 faith(4), epair(4), enc(4), tun(4), if_lagg(4), gre(4). 158 15920121015: 160 The sdhci driver was split in two parts: sdhci (generic SD Host 161 Controller logic) and sdhci_pci (actual hardware driver). 162 No kernel config modifications are required, but if you 163 load sdhc as a module you must switch to sdhci_pci instead. 164 16520121014: 166 Import the FUSE kernel and userland support into base system. 167 16820121013: 169 The GNU sort(1) program has been removed since the BSD-licensed 170 sort(1) has been the default for quite some time and no serious 171 problems have been reported. The corresponding WITH_GNU_SORT 172 knob has also gone. 173 17420121006: 175 The pfil(9) API/ABI for AF_INET family has been changed. Packet 176 filtering modules: pf(4), ipfw(4), ipfilter(4) need to be recompiled 177 with new kernel. 178 17920121001: 180 The net80211(4) ABI has been changed to allow for improved driver 181 PS-POLL and power-save support. All wireless drivers need to be 182 recompiled to work with the new kernel. 183 18420120913: 185 The random(4) support for the VIA hardware random number 186 generator (`PADLOCK') is no longer enabled unconditionally. 187 Add the PADLOCK_RNG option in the custom kernel config if 188 needed. The GENERIC kernels on i386 and amd64 do include the 189 option, so the change only affects the custom kernel 190 configurations. 191 19220120908: 193 The pf(4) packet filter ABI has been changed. pfctl(8) and 194 snmp_pf module need to be recompiled to work with new kernel. 195 19620120828: 197 A new ZFS feature flag "com.delphix:empty_bpobj" has been merged 198 to -HEAD. Pools that have empty_bpobj in active state can not be 199 imported read-write with ZFS implementations that do not support 200 this feature. For more information read the zpool-features(5) 201 manual page. 202 20320120727: 204 The sparc64 ZFS loader has been changed to no longer try to auto- 205 detect ZFS providers based on diskN aliases but now requires these 206 to be explicitly listed in the OFW boot-device environment variable. 207 20820120712: 209 The OpenSSL has been upgraded to 1.0.1c. Any binaries requiring 210 libcrypto.so.6 or libssl.so.6 must be recompiled. Also, there are 211 configuration changes. Make sure to merge /etc/ssl/openssl.cnf. 212 21320120712: 214 The following sysctls and tunables have been renamed for consistency 215 with other variables: 216 kern.cam.da.da_send_ordered -> kern.cam.da.send_ordered 217 kern.cam.ada.ada_send_ordered -> kern.cam.ada.send_ordered 218 21920120628: 220 The sort utility has been replaced with BSD sort. For now, GNU sort 221 is also available as "gnusort" or the default can be set back to 222 GNU sort by setting WITH_GNU_SORT. In this case, BSD sort will be 223 installed as "bsdsort". 224 22520120611: 226 A new version of ZFS (pool version 5000) has been merged to -HEAD. 227 Starting with this version the old system of ZFS pool versioning 228 is superseded by "feature flags". This concept enables forward 229 compatibility against certain future changes in functionality of ZFS 230 pools. The first read-only compatible "feature flag" for ZFS pools 231 is named "com.delphix:async_destroy". For more information 232 read the new zpool-features(5) manual page. 233 Please refer to the "ZFS notes" section of this file for information 234 on upgrading boot ZFS pools. 235 23620120417: 237 The malloc(3) implementation embedded in libc now uses sources imported 238 as contrib/jemalloc. The most disruptive API change is to 239 /etc/malloc.conf. If your system has an old-style /etc/malloc.conf, 240 delete it prior to installworld, and optionally re-create it using the 241 new format after rebooting. See malloc.conf(5) for details 242 (specifically the TUNING section and the "opt.*" entries in the MALLCTL 243 NAMESPACE section). 244 24520120328: 246 Big-endian MIPS TARGET_ARCH values no longer end in "eb". mips64eb 247 is now spelled mips64. mipsn32eb is now spelled mipsn32. mipseb is 248 now spelled mips. This is to aid compatibility with third-party 249 software that expects this naming scheme in uname(3). Little-endian 250 settings are unchanged. 251 25220120306: 253 Disable by default the option VFS_ALLOW_NONMPSAFE for all supported 254 platforms. 255 25620120229: 257 Now unix domain sockets behave "as expected" on nullfs(5). Previously 258 nullfs(5) did not pass through all behaviours to the underlying layer, 259 as a result if we bound to a socket on the lower layer we could connect 260 only to the lower path; if we bound to the upper layer we could connect 261 only to the upper path. The new behavior is one can connect to both the 262 lower and the upper paths regardless what layer path one binds to. 263 26420120211: 265 The getifaddrs upgrade path broken with 20111215 has been restored. 266 If you have upgraded in between 20111215 and 20120209 you need to 267 recompile libc again with your kernel. You still need to recompile 268 world to be able to configure CARP but this restriction already 269 comes from 20111215. 270 27120120114: 272 The set_rcvar() function has been removed from /etc/rc.subr. All 273 base and ports rc.d scripts have been updated, so if you have a 274 port installed with a script in /usr/local/etc/rc.d you can either 275 hand-edit the rcvar= line, or reinstall the port. 276 277 An easy way to handle the mass-update of /etc/rc.d: 278 rm /etc/rc.d/* && mergemaster -i 279 28020120109: 281 panic(9) now stops other CPUs in the SMP systems, disables interrupts 282 on the current CPU and prevents other threads from running. 283 This behavior can be reverted using the kern.stop_scheduler_on_panic 284 tunable/sysctl. 285 The new behavior can be incompatible with kern.sync_on_panic. 286 28720111215: 288 The carp(4) facility has been changed significantly. Configuration 289 of the CARP protocol via ifconfig(8) has changed, as well as format 290 of CARP events submitted to devd(8) has changed. See manual pages 291 for more information. The arpbalance feature of carp(4) is currently 292 not supported anymore. 293 294 Size of struct in_aliasreq, struct in6_aliasreq has changed. User 295 utilities using SIOCAIFADDR, SIOCAIFADDR_IN6, e.g. ifconfig(8), 296 need to be recompiled. 297 29820111122: 299 The acpi_wmi(4) status device /dev/wmistat has been renamed to 300 /dev/wmistat0. 301 30220111108: 303 The option VFS_ALLOW_NONMPSAFE option has been added in order to 304 explicitely support non-MPSAFE filesystems. 305 It is on by default for all supported platform at this present 306 time. 307 30820111101: 309 The broken amd(4) driver has been replaced with esp(4) in the amd64, 310 i386 and pc98 GENERIC kernel configuration files. 311 31220110930: 313 sysinstall has been removed 314 31520110923: 316 The stable/9 branch created in subversion. This corresponds to the 317 RELENG_9 branch in CVS. 318 31920110913: 320 This commit modifies vfs_register() so that it uses a hash 321 calculation to set vfc_typenum, which is enabled by default. 322 The first time a system is booted after this change, the 323 vfc_typenum values will change for all file systems. The 324 main effect of this is a change to the NFS server file handles 325 for file systems that use vfc_typenum in their fsid, such as ZFS. 326 It will, however, prevent vfc_typenum from changing when file 327 systems are loaded in a different order for subsequent reboots. 328 To disable this, you can set vfs.typenumhash=0 in /boot/loader.conf 329 until you are ready to remount all NFS clients after a reboot. 330 33120110828: 332 Bump the shared library version numbers for libraries that 333 do not use symbol versioning, have changed the ABI compared 334 to stable/8 and which shared library version was not bumped. 335 Done as part of 9.0-RELEASE cycle. 336 33720110815: 338 During the merge of Capsicum features, the fget(9) KPI was modified. 339 This may require the rebuilding of out-of-tree device drivers -- 340 issues have been reported specifically with the nVidia device driver. 341 __FreeBSD_version is bumped to 900041. 342 343 Also, there is a period between 20110811 and 20110814 where the 344 special devices /dev/{stdin,stdout,stderr} did not work correctly. 345 Building world from a kernel during that window may not work. 346 34720110628: 348 The packet filter (pf) code has been updated to OpenBSD 4.5. 349 You need to update userland tools to be in sync with kernel. 350 This update breaks backward compatibility with earlier pfsync(4) 351 versions. Care must be taken when updating redundant firewall setups. 352 35320110608: 354 The following sysctls and tunables are retired on x86 platforms: 355 machdep.hlt_cpus 356 machdep.hlt_logical_cpus 357 The following sysctl is retired: 358 machdep.hyperthreading_allowed 359 The sysctls were supposed to provide a way to dynamically offline and 360 online selected CPUs on x86 platforms, but the implementation has not 361 been reliable especially with SCHED_ULE scheduler. 362 machdep.hyperthreading_allowed tunable is still available to ignore 363 hyperthreading CPUs at OS level. 364 Individual CPUs can be disabled using hint.lapic.X.disabled tunable, 365 where X is an APIC ID of a CPU. Be advised, though, that disabling 366 CPUs in non-uniform fashion will result in non-uniform topology and 367 may lead to sub-optimal system performance with SCHED_ULE, which is 368 a default scheduler. 369 37020110607: 371 cpumask_t type is retired and cpuset_t is used in order to describe 372 a mask of CPUs. 373 37420110531: 375 Changes to ifconfig(8) for dynamic address family detection mandate 376 that you are running a kernel of 20110525 or later. Make sure to 377 follow the update procedure to boot a new kernel before installing 378 world. 379 38020110513: 381 Support for sun4v architecture is officially dropped 382 38320110503: 384 Several KPI breaking changes have been committed to the mii(4) layer, 385 the PHY drivers and consequently some Ethernet drivers using mii(4). 386 This means that miibus.ko and the modules of the affected Ethernet 387 drivers need to be recompiled. 388 389 Note to kernel developers: Given that the OUI bit reversion problem 390 was fixed as part of these changes all mii(4) commits related to OUIs, 391 i.e. to sys/dev/mii/miidevs, PHY driver probing and vendor specific 392 handling, no longer can be merged verbatim to stable/8 and previous 393 branches. 394 39520110430: 396 Users of the Atheros AR71xx SoC code now need to add 'device ar71xx_pci' 397 into their kernel configurations along with 'device pci'. 398 39920110427: 400 The default NFS client is now the new NFS client, so fstype "newnfs" 401 is now "nfs" and the regular/old NFS client is now fstype "oldnfs". 402 Although mounts via fstype "nfs" will usually work without userland 403 changes, it is recommended that the mount(8) and mount_nfs(8) 404 commands be rebuilt from sources and that a link to mount_nfs called 405 mount_oldnfs be created. The new client is compiled into the 406 kernel with "options NFSCL" and this is needed for diskless root 407 file systems. The GENERIC kernel configs have been changed to use 408 NFSCL and NFSD (the new server) instead of NFSCLIENT and NFSSERVER. 409 To use the regular/old client, you can "mount -t oldnfs ...". For 410 a diskless root file system, you must also include a line like: 411 412 vfs.root.mountfrom="oldnfs:" 413 414 in the boot/loader.conf on the root fs on the NFS server to make 415 a diskless root fs use the old client. 416 41720110424: 418 The GENERIC kernels for all architectures now default to the new 419 CAM-based ATA stack. It means that all legacy ATA drivers were 420 removed and replaced by respective CAM drivers. If you are using 421 ATA device names in /etc/fstab or other places, make sure to update 422 them respectively (adX -> adaY, acdX -> cdY, afdX -> daY, astX -> saY, 423 where 'Y's are the sequential numbers starting from zero for each type 424 in order of detection, unless configured otherwise with tunables, 425 see cam(4)). There will be symbolic links created in /dev/ to map 426 old adX devices to the respective adaY. They should provide basic 427 compatibility for file systems mounting in most cases, but they do 428 not support old user-level APIs and do not have respective providers 429 in GEOM. Consider using updated management tools with new device names. 430 431 It is possible to load devices ahci, ata, siis and mvs as modules, 432 but option ATA_CAM should remain in kernel configuration to make ata 433 module work as CAM driver supporting legacy ATA controllers. Device ata 434 still can be used in modular fashion (atacore + ...). Modules atadisk 435 and atapi* are not used and won't affect operation in ATA_CAM mode. 436 Note that to use CAM-based ATA kernel should include CAM devices 437 scbus, pass, da (or explicitly ada), cd and optionally others. All of 438 them are parts of the cam module. 439 440 ataraid(4) functionality is now supported by the RAID GEOM class. 441 To use it you can load geom_raid kernel module and use graid(8) tool 442 for management. Instead of /dev/arX device names, use /dev/raid/rX. 443 444 No kernel config options or code have been removed, so if a problem 445 arises, please report it and optionally revert to the old ATA stack. 446 In order to do it you can remove from the kernel config: 447 options ATA_CAM 448 device ahci 449 device mvs 450 device siis 451 , and instead add back: 452 device atadisk # ATA disk drives 453 device ataraid # ATA RAID drives 454 device atapicd # ATAPI CDROM drives 455 device atapifd # ATAPI floppy drives 456 device atapist # ATAPI tape drives 457 45820110423: 459 The default NFS server has been changed to the new server, which 460 was referred to as the experimental server. If you need to switch 461 back to the old NFS server, you must now put the "-o" option on 462 both the mountd and nfsd commands. This can be done using the 463 mountd_flags and nfs_server_flags rc.conf variables until an 464 update to the rc scripts is committed, which is coming soon. 465 46620110418: 467 The GNU Objective-C runtime library (libobjc), and other Objective-C 468 related components have been removed from the base system. If you 469 require an Objective-C library, please use one of the available ports. 470 47120110331: 472 ath(4) has been split into bus- and device- modules. if_ath contains 473 the HAL, the TX rate control and the network device code. if_ath_pci 474 contains the PCI bus glue. For Atheros MIPS embedded systems, if_ath_ahb 475 contains the AHB glue. Users need to load both if_ath_pci and if_ath 476 in order to use ath on everything else. 477 478 TO REPEAT: if_ath_ahb is not needed for normal users. Normal users only 479 need to load if_ath and if_ath_pci for ath(4) operation. 480 48120110314: 482 As part of the replacement of sysinstall, the process of building 483 release media has changed significantly. For details, please re-read 484 release(7), which has been updated to reflect the new build process. 485 48620110218: 487 GNU binutils 2.17.50 (as of 2007-07-03) has been merged to -HEAD. This 488 is the last available version under GPLv2. It brings a number of new 489 features, such as support for newer x86 CPU's (with SSE-3, SSSE-3, SSE 490 4.1 and SSE 4.2), better support for powerpc64, a number of new 491 directives, and lots of other small improvements. See the ChangeLog 492 file in contrib/binutils for the full details. 493 49420110218: 495 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868 496 compliant, and will now use half of hash for authentication. 497 This will break interoperability with all stacks (including all 498 actual FreeBSD versions) who implement 499 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for 500 authentication). 501 The only workaround with such peers is to use another HMAC 502 algorithm for IPsec ("phase 2") authentication. 503 50420110207: 505 Remove the uio_yield prototype and symbol. This function has 506 been misnamed since it was introduced and should not be 507 globally exposed with this name. The equivalent functionality 508 is now available using kern_yield(curthread->td_user_pri). 509 The function remains undocumented. 510 51120110112: 512 A SYSCTL_[ADD_]UQUAD was added for unsigned uint64_t pointers, 513 symmetric with the existing SYSCTL_[ADD_]QUAD. Type checking 514 for scalar sysctls is defined but disabled. Code that needs 515 UQUAD to pass the type checking that must compile on older 516 systems where the define is not present can check against 517 __FreeBSD_version >= 900030. 518 519 The system dialog(1) has been replaced with a new version previously 520 in ports as devel/cdialog. dialog(1) is mostly command-line compatible 521 with the previous version, but the libdialog associated with it has 522 a largely incompatible API. As such, the original version of libdialog 523 will be kept temporarily as libodialog, until its base system consumers 524 are replaced or updated. Bump __FreeBSD_version to 900030. 525 52620110103: 527 If you are trying to run make universe on a -stable system, and you get 528 the following warning: 529 "Makefile", line 356: "Target architecture for i386/conf/GENERIC 530 unknown. config(8) likely too old." 531 or something similar to it, then you must upgrade your -stable system 532 to 8.2-Release or newer (really, any time after r210146 7/15/2010 in 533 stable/8) or build the config from the latest stable/8 branch and 534 install it on your system. 535 536 Prior to this date, building a current universe on 8-stable system from 537 between 7/15/2010 and 1/2/2011 would result in a weird shell parsing 538 error in the first kernel build phase. A new config on those old 539 systems will fix that problem for older versions of -current. 540 54120101228: 542 The TCP stack has been modified to allow Khelp modules to interact with 543 it via helper hook points and store per-connection data in the TCP 544 control block. Bump __FreeBSD_version to 900029. User space tools that 545 rely on the size of struct tcpcb in tcp_var.h (e.g. sockstat) need to 546 be recompiled. 547 54820101114: 549 Generic IEEE 802.3 annex 31B full duplex flow control support has been 550 added to mii(4) and bge(4), bce(4), msk(4), nfe(4) and stge(4) along 551 with brgphy(4), e1000phy(4) as well as ip1000phy() have been converted 552 to take advantage of it instead of using custom implementations. This 553 means that these drivers now no longer unconditionally advertise 554 support for flow control but only do so if flow control is a selected 555 media option. This was implemented in the generic support that way in 556 order to allow flow control to be switched on and off via ifconfig(8) 557 with the PHY specific default to typically off in order to protect 558 from unwanted effects. Consequently, if you used flow control with 559 one of the above mentioned drivers you now need to explicitly enable 560 it, for example via: 561 ifconfig bge0 media auto mediaopt flowcontrol 562 563 Along with the above mentioned changes generic support for setting 564 1000baseT master mode also has been added and brgphy(4), ciphy(4), 565 e1000phy(4) as well as ip1000phy(4) have been converted to take 566 advantage of it. This means that these drivers now no longer take the 567 link0 parameter for selecting master mode but the master media option 568 has to be used instead, for example like in the following: 569 ifconfig bge0 media 1000baseT mediaopt full-duplex,master 570 571 Selection of master mode now is also available with all other PHY 572 drivers supporting 1000baseT. 573 57420101111: 575 The TCP stack has received a significant update to add support for 576 modularised congestion control and generally improve the clarity of 577 congestion control decisions. Bump __FreeBSD_version to 900025. User 578 space tools that rely on the size of struct tcpcb in tcp_var.h (e.g. 579 sockstat) need to be recompiled. 580 58120101002: 582 The man(1) utility has been replaced by a new version that no longer 583 uses /etc/manpath.config. Please consult man.conf(5) for how to 584 migrate local entries to the new format. 585 58620100928: 587 The copyright strings printed by login(1) and sshd(8) at the time of a 588 new connection have been removed to follow other operating systems and 589 upstream sshd. 590 59120100915: 592 A workaround for a fixed ld bug has been removed in kernel code, 593 so make sure that your system ld is built from sources after 594 revision 210245 from 2010-07-19 (r211583 if building head kernel 595 on stable/8, r211584 for stable/7; both from 2010-08-21). 596 A symptom of incorrect ld version is different addresses for 597 set_pcpu section and __start_set_pcpu symbol in kernel and/or modules. 598 59920100913: 600 The $ipv6_prefer variable in rc.conf(5) has been split into 601 $ip6addrctl_policy and $ipv6_activate_all_interfaces. 602 603 The $ip6addrctl_policy is a variable to choose a pre-defined 604 address selection policy set by ip6addrctl(8). A value 605 "ipv4_prefer", "ipv6_prefer" or "AUTO" can be specified. The 606 default is "AUTO". 607 608 The $ipv6_activate_all_interfaces specifies whether IFDISABLED 609 flag (see an entry of 20090926) is set on an interface with no 610 corresponding $ifconfig_IF_ipv6 line. The default is "NO" for 611 security reason. If you want IPv6 link-local address on all 612 interfaces by default, set this to "YES". 613 614 The old ipv6_prefer="YES" is equivalent to 615 ipv6_activate_all_interfaces="YES" and 616 ip6addrctl_policy="ipv6_prefer". 617 61820100913: 619 DTrace has grown support for userland tracing. Due to this, DTrace is 620 now i386 and amd64 only. 621 dtruss(1) is now installed by default on those systems and a new 622 kernel module is needed for userland tracing: fasttrap. 623 No changes to your kernel config file are necessary to enable 624 userland tracing, but you might consider adding 'STRIP=' and 625 'CFLAGS+=-fno-omit-frame-pointer' to your make.conf if you want 626 to have informative userland stack traces in DTrace (ustack). 627 62820100725: 629 The acpi_aiboost(4) driver has been removed in favor of the new 630 aibs(4) driver. You should update your kernel configuration file. 631 63220100722: 633 BSD grep has been imported to the base system and it is built by 634 default. It is completely BSD licensed, highly GNU-compatible, uses 635 less memory than its GNU counterpart and has a small codebase. 636 However, it is slower than its GNU counterpart, which is mostly 637 noticeable for larger searches, for smaller ones it is measurable 638 but not significant. The reason is complex, the most important factor 639 is that we lack a modern and efficient regex library and GNU 640 overcomes this by optimizing the searches internally. Future work 641 on improving the regex performance is planned, for the meantime, 642 users that need better performance, can build GNU grep instead by 643 setting the WITH_GNU_GREP knob. 644 64520100713: 646 Due to the import of powerpc64 support, all existing powerpc kernel 647 configuration files must be updated with a machine directive like this: 648 machine powerpc powerpc 649 650 In addition, an updated config(8) is required to build powerpc kernels 651 after this change. 652 65320100713: 654 A new version of ZFS (version 15) has been merged to -HEAD. 655 This version uses a python library for the following subcommands: 656 zfs allow, zfs unallow, zfs groupspace, zfs userspace. 657 For full functionality of these commands the following port must 658 be installed: sysutils/py-zfs 659 66020100429: 661 'vm_page's are now hashed by physical address to an array of mutexes. 662 Currently this is only used to serialize access to hold_count. Over 663 time the page queue mutex will be peeled away. This changes the size 664 of pmap on every architecture. And requires all callers of vm_page_hold 665 and vm_page_unhold to be updated. 666 66720100402: 668 WITH_CTF can now be specified in src.conf (not recommended, there 669 are some problems with static executables), make.conf (would also 670 affect ports which do not use GNU make and do not override the 671 compile targets) or in the kernel config (via "makeoptions 672 WITH_CTF=yes"). 673 When WITH_CTF was specified there before this was silently ignored, 674 so make sure that WITH_CTF is not used in places which could lead 675 to unwanted behavior. 676 67720100311: 678 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32 679 to allow 32-bit compatibility on non-x86 platforms. All kernel 680 configurations on amd64 and ia64 platforms using these options must 681 be modified accordingly. 682 68320100113: 684 The utmp user accounting database has been replaced with utmpx, 685 the user accounting interface standardized by POSIX. 686 Unfortunately the semantics of utmp and utmpx don't match, 687 making it practically impossible to support both interfaces. 688 The user accounting database is used by tools like finger(1), 689 last(1), talk(1), w(1) and ac(8). 690 691 All applications in the base system use utmpx. This means only 692 local binaries (e.g. from the ports tree) may still use these 693 utmp database files. These applications must be rebuilt to make 694 use of utmpx. 695 696 After the system has been upgraded, it is safe to remove the old 697 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*), 698 assuming their contents is of no importance anymore. Old wtmp 699 databases can only be used by last(1) and ac(8) after they have 700 been converted to the new format using wtmpcvt(1). 701 70220100108: 703 Introduce the kernel thread "deadlock resolver" (which can be enabled 704 via the DEADLKRES option, see NOTES for more details) and the 705 sleepq_type() function for sleepqueues. 706 70720091202: 708 The rc.firewall and rc.firewall6 were unified, and 709 rc.firewall6 and rc.d/ip6fw were removed. 710 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc 711 variables are obsoleted. Instead, the following new rc 712 variables are added to rc.d/ipfw: 713 714 firewall_client_net_ipv6, firewall_simple_iif_ipv6, 715 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6, 716 firewall_simple_onet_ipv6, firewall_trusted_ipv6 717 718 The meanings correspond to the relevant IPv4 variables. 719 72020091125: 721 8.0-RELEASE. 722 72320091113: 724 The default terminal emulation for syscons(4) has been changed 725 from cons25 to xterm on all platforms except pc98. This means 726 that the /etc/ttys file needs to be updated to ensure correct 727 operation of applications on the console. 728 729 The terminal emulation style can be toggled per window by using 730 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration 731 options can be used to change the compile-time default back to 732 cons25. 733 734 To prevent graphical artifacts, make sure the TERM environment 735 variable is set to match the terminal emulation that is being 736 performed by syscons(4). 737 73820091109: 739 The layout of the structure ieee80211req_scan_result has changed. 740 Applications that require wireless scan results (e.g. ifconfig(8)) 741 from net80211 need to be recompiled. 742 743 Applications such as wpa_supplicant(8) may require a full world 744 build without using NO_CLEAN in order to get synchronized with the 745 new structure. 746 74720091025: 748 The iwn(4) driver has been updated to support the 5000 and 5150 series. 749 There's one kernel module for each firmware. Adding "device iwnfw" 750 to the kernel configuration file means including all three firmware 751 images inside the kernel. If you want to include just the one for 752 your wireless card, use the devices iwn4965fw, iwn5000fw or 753 iwn5150fw. 754 75520090926: 756 The rc.d/network_ipv6, IPv6 configuration script has been integrated 757 into rc.d/netif. The changes are the following: 758 759 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF 760 for IPv4. For aliases, $ifconfig_IF_aliasN should be used. 761 Note that both variables need the "inet6" keyword at the head. 762 763 Do not set $ipv6_network_interfaces manually if you do not 764 understand what you are doing. It is not needed in most cases. 765 766 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but 767 they are obsolete. 768 769 2. $ipv6_enable is obsolete. Use $ipv6_prefer and 770 "inet6 accept_rtadv" keyword in ifconfig(8) instead. 771 772 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and 773 all configured interfaces have "inet6 accept_rtadv" in the 774 $ifconfig_IF_ipv6. These are for backward compatibility. 775 776 3. A new variable $ipv6_prefer has been added. If NO, IPv6 777 functionality of interfaces with no corresponding 778 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag, 779 and the default address selection policy of ip6addrctl(8) 780 is the IPv4-preferred one (see rc.d/ip6addrctl for more details). 781 Note that if you want to configure IPv6 functionality on the 782 disabled interfaces after boot, first you need to clear the flag by 783 using ifconfig(8) like: 784 785 ifconfig em0 inet6 -ifdisabled 786 787 If YES, the default address selection policy is set as 788 IPv6-preferred. 789 790 The default value of $ipv6_prefer is NO. 791 792 4. If your system need to receive Router Advertisement messages, 793 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8) 794 scripts automatically invoke rtsol(8) when the interface becomes 795 UP. The Router Advertisement messages are used for SLAAC 796 (State-Less Address AutoConfiguration). 797 79820090922: 799 802.11s D3.03 support was committed. This is incompatible with the 800 previous code, which was based on D3.0. 801 80220090912: 803 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value 804 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to 805 control whether accepting Router Advertisement messages or not. 806 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and 807 a sysctl variable net.inet6.ip6.auto_linklocal is its default value. 808 The ifconfig(8) utility now supports these flags. 809 81020090910: 811 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for 812 mount(8) and -a option for df(1) to see them. 813 81420090825: 815 The old tunable hw.bus.devctl_disable has been superseded by 816 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be 817 replaced by hw.bus.devctl_queue=0. The default for this new tunable 818 is 1000. 819 82020090813: 821 Remove the option STOP_NMI. The default action is now to use NMI only 822 for KDB via the newly introduced function stop_cpus_hard() and 823 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64. 824 82520090803: 826 The stable/8 branch created in subversion. This corresponds to the 827 RELENG_8 branch in CVS. 828 82920090719: 830 Bump the shared library version numbers for all libraries that do not 831 use symbol versioning as part of the 8.0-RELEASE cycle. Bump 832 __FreeBSD_version to 800105. 833 83420090714: 835 Due to changes in the implementation of virtual network stack support, 836 all network-related kernel modules must be recompiled. As this change 837 breaks the ABI, bump __FreeBSD_version to 800104. 838 83920090713: 840 The TOE interface to the TCP syncache has been modified to remove 841 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. 842 The cxgb driver is the only TOE consumer affected by this change, and 843 needs to be recompiled along with the kernel. As this change breaks 844 the ABI, bump __FreeBSD_version to 800103. 845 84620090712: 847 Padding has been added to struct tcpcb, sackhint and tcpstat in 848 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst 849 maintaining the ABI. However, this change breaks the ABI, so bump 850 __FreeBSD_version to 800102. User space tools that rely on the size of 851 any of these structs (e.g. sockstat) need to be recompiled. 852 85320090630: 854 The NFS_LEGACYRPC option has been removed along with the old kernel 855 RPC implementation that this option selected. Kernel configurations 856 may need to be adjusted. 857 85820090629: 859 The network interface device nodes at /dev/net/<interface> have been 860 removed. All ioctl operations can be performed the normal way using 861 routing sockets. The kqueue functionality can generally be replaced 862 with routing sockets. 863 86420090628: 865 The documentation from the FreeBSD Documentation Project (Handbook, 866 FAQ, etc.) is now installed via packages by sysinstall(8) and under 867 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc. 868 86920090624: 870 The ABI of various structures related to the SYSV IPC API have been 871 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel 872 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to 873 800100. 874 87520090622: 876 Layout of struct vnet has changed as routing related variables were 877 moved to their own Vimage module. Modules need to be recompiled. Bump 878 __FreeBSD_version to 800099. 879 88020090619: 881 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024 882 respectively. As long as no more than 16 groups per process are used, 883 no changes should be visible. When more than 16 groups are used, old 884 binaries may fail if they call getgroups() or getgrouplist() with 885 statically sized storage. Recompiling will work around this, but 886 applications should be modified to use dynamically allocated storage 887 for group arrays as POSIX.1-2008 does not cap an implementation's 888 number of supported groups at NGROUPS_MAX+1 as previous versions did. 889 890 NFS and portalfs mounts may also be affected as the list of groups is 891 truncated to 16. Users of NFS who use more than 16 groups, should 892 take care that negative group permissions are not used on the exported 893 file systems as they will not be reliable unless a GSSAPI based 894 authentication method is used. 895 89620090616: 897 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This 898 option compiles in the support for adaptive spinning for lockmgrs 899 which want to enable it. The lockinit() function now accepts the flag 900 LK_ADAPTIVE in order to make the lock object subject to adaptive 901 spinning when both held in write and read mode. 902 90320090613: 904 The layout of the structure returned by IEEE80211_IOC_STA_INFO has 905 changed. User applications that use this ioctl need to be rebuilt. 906 90720090611: 908 The layout of struct thread has changed. Kernel and modules need to 909 be rebuilt. 910 91120090608: 912 The layout of structs ifnet, domain, protosw and vnet_net has changed. 913 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097. 914 91520090602: 916 window(1) has been removed from the base system. It can now be 917 installed from ports. The port is called misc/window. 918 91920090601: 920 The way we are storing and accessing `routing table' entries has 921 changed. Programs reading the FIB, like netstat, need to be 922 re-compiled. 923 92420090601: 925 A new netisr implementation has been added for FreeBSD 8. Network 926 file system modules, such as igmp, ipdivert, and others, should be 927 rebuilt. 928 Bump __FreeBSD_version to 800096. 929 93020090530: 931 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no 932 more valid. 933 93420090530: 935 Add VOP_ACCESSX(9). File system modules need to be rebuilt. 936 Bump __FreeBSD_version to 800094. 937 93820090529: 939 Add mnt_xflag field to 'struct mount'. File system modules need to be 940 rebuilt. 941 Bump __FreeBSD_version to 800093. 942 94320090528: 944 The compiling option ADAPTIVE_SX has been retired while it has been 945 introduced the option NO_ADAPTIVE_SX which handles the reversed logic. 946 The KPI for sx_init_flags() changes as accepting flags: 947 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has 948 been introduced in order to handle the reversed logic. 949 Bump __FreeBSD_version to 800092. 950 95120090527: 952 Add support for hierarchical jails. Remove global securelevel. 953 Bump __FreeBSD_version to 800091. 954 95520090523: 956 The layout of struct vnet_net has changed, therefore modules 957 need to be rebuilt. 958 Bump __FreeBSD_version to 800090. 959 96020090523: 961 The newly imported zic(8) produces a new format in the output. Please 962 run tzsetup(8) to install the newly created data to /etc/localtime. 963 96420090520: 965 The sysctl tree for the usb stack has renamed from hw.usb2.* to 966 hw.usb.* and is now consistent again with previous releases. 967 96820090520: 969 802.11 monitor mode support was revised and driver api's were changed. 970 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead 971 of DLT_IEEE802_11. No user-visible data structures were changed but 972 applications that use DLT_IEEE802_11 may require changes. 973 Bump __FreeBSD_version to 800088. 974 97520090430: 976 The layout of the following structs has changed: sysctl_oid, 977 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet, 978 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or 979 panics may be experienced. World rebuild is required for 980 correctly checking networking state from userland. 981 Bump __FreeBSD_version to 800085. 982 98320090429: 984 MLDv2 and Source-Specific Multicast (SSM) have been merged 985 to the IPv6 stack. VIMAGE hooks are in but not yet used. 986 The implementation of SSM within FreeBSD's IPv6 stack closely 987 follows the IPv4 implementation. 988 989 For kernel developers: 990 991 * The most important changes are that the ip6_output() and 992 ip6_input() paths no longer take the IN6_MULTI_LOCK, 993 and this lock has been downgraded to a non-recursive mutex. 994 995 * As with the changes to the IPv4 stack to support SSM, filtering 996 of inbound multicast traffic must now be performed by transport 997 protocols within the IPv6 stack. This does not apply to TCP and 998 SCTP, however, it does apply to UDP in IPv6 and raw IPv6. 999 1000 * The KPIs used by IPv6 multicast are similar to those used by 1001 the IPv4 stack, with the following differences: 1002 * im6o_mc_filter() is analogous to imo_multicast_filter(). 1003 * The legacy KAME entry points in6_joingroup and in6_leavegroup() 1004 are shimmed to in6_mc_join() and in6_mc_leave() respectively. 1005 * IN6_LOOKUP_MULTI() has been deprecated and removed. 1006 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs 1007 for MLDv1 have an additional 'timer' argument which is used to 1008 jitter the initial membership report for the solicited-node 1009 multicast membership on-link. 1010 * This is not strictly needed for MLDv2, which already jitters 1011 its report transmissions. However, the 'timer' argument is 1012 preserved in case MLDv1 is active on the interface. 1013 1014 * The KAME linked-list based IPv6 membership implementation has 1015 been refactored to use a vector similar to that used by the IPv4 1016 stack. 1017 Code which maintains a list of its own multicast memberships 1018 internally, e.g. carp, has been updated to reflect the new 1019 semantics. 1020 1021 * There is a known Lock Order Reversal (LOR) due to in6_setscope() 1022 acquiring the IF_AFDATA_LOCK and being called within ip6_output(). 1023 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an 1024 implementation constraint which needs to be addressed in HEAD. 1025 1026 For application developers: 1027 1028 * The changes are broadly similar to those made for the IPv4 1029 stack. 1030 1031 * The use of IPv4 and IPv6 multicast socket options on the same 1032 socket, using mapped addresses, HAS NOT been tested or supported. 1033 1034 * There are a number of issues with the implementation of various 1035 IPv6 multicast APIs which need to be resolved in the API surface 1036 before the implementation is fully compatible with KAME userland 1037 use, and these are mostly to do with interface index treatment. 1038 1039 * The literature available discusses the use of either the delta / ASM 1040 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API 1041 using setsourcefilter(3)/getsourcefilter(3). For more information 1042 please refer to RFC 3768, 'Socket Interface Extensions for 1043 Multicast Source Filters'. 1044 1045 * Applications which use the published RFC 3678 APIs should be fine. 1046 1047 For systems administrators: 1048 1049 * The mtest(8) utility has been refactored to support IPv6, in 1050 addition to IPv4. Interface addresses are no longer accepted 1051 as arguments, their names must be used instead. The utility 1052 will map the interface name to its first IPv4 address as 1053 returned by getifaddrs(3). 1054 1055 * The ifmcstat(8) utility has also been updated to print the MLDv2 1056 endpoint state and source filter lists via sysctl(3). 1057 1058 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable 1059 loopback of IPv6 multicast datagrams by default; it defaults to 1 1060 to preserve the existing behaviour. Disabling multicast loopback is 1061 recommended for optimal system performance. 1062 1063 * The IPv6 MROUTING code has been changed to examine this sysctl 1064 instead of attempting to perform a group lookup before looping 1065 back forwarded datagrams. 1066 1067 Bump __FreeBSD_version to 800084. 1068 106920090422: 1070 Implement low-level Bluetooth HCI API. 1071 Bump __FreeBSD_version to 800083. 1072 107320090419: 1074 The layout of struct malloc_type, used by modules to register new 1075 memory allocation types, has changed. Most modules will need to 1076 be rebuilt or panics may be experienced. 1077 Bump __FreeBSD_version to 800081. 1078 107920090415: 1080 Anticipate overflowing inp_flags - add inp_flags2. 1081 This changes most offsets in inpcb, so checking v4 connection 1082 state will require a world rebuild. 1083 Bump __FreeBSD_version to 800080. 1084 108520090415: 1086 Add an llentry to struct route and struct route_in6. Modules 1087 embedding a struct route will need to be recompiled. 1088 Bump __FreeBSD_version to 800079. 1089 109020090414: 1091 The size of rt_metrics_lite and by extension rtentry has changed. 1092 Networking administration apps will need to be recompiled. 1093 The route command now supports show as an alias for get, weighting 1094 of routes, sticky and nostick flags to alter the behavior of stateful 1095 load balancing. 1096 Bump __FreeBSD_version to 800078. 1097 109820090408: 1099 Do not use Giant for kbdmux(4) locking. This is wrong and 1100 apparently causing more problems than it solves. This will 1101 re-open the issue where interrupt handlers may race with 1102 kbdmux(4) in polling mode. Typical symptoms include (but 1103 not limited to) duplicated and/or missing characters when 1104 low level console functions (such as gets) are used while 1105 interrupts are enabled (for example geli password prompt, 1106 mountroot prompt etc.). Disabling kbdmux(4) may help. 1107 110820090407: 1109 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed; 1110 kernel modules referencing any of the above need to be recompiled. 1111 Bump __FreeBSD_version to 800075. 1112 111320090320: 1114 GEOM_PART has become the default partition slicer for storage devices, 1115 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It 1116 introduces some changes: 1117 1118 MSDOS/EBR: the devices created from MSDOS extended partition entries 1119 (EBR) can be named differently than with GEOM_MBR and are now symlinks 1120 to devices with offset-based names. fstabs may need to be modified. 1121 1122 BSD: the "geometry does not match label" warning is harmless in most 1123 cases but it points to problems in file system misalignment with 1124 disk geometry. The "c" partition is now implicit, covers the whole 1125 top-level drive and cannot be (mis)used by users. 1126 1127 General: Kernel dumps are now not allowed to be written to devices 1128 whose partition types indicate they are meant to be used for file 1129 systems (or, in case of MSDOS partitions, as something else than 1130 the "386BSD" type). 1131 1132 Most of these changes date approximately from 200812. 1133 113420090319: 1135 The uscanner(4) driver has been removed from the kernel. This follows 1136 Linux removing theirs in 2.6 and making libusb the default interface 1137 (supported by sane). 1138 113920090319: 1140 The multicast forwarding code has been cleaned up. netstat(1) 1141 only relies on KVM now for printing bandwidth upcall meters. 1142 The IPv4 and IPv6 modules are split into ip_mroute_mod and 1143 ip6_mroute_mod respectively. The config(5) options for statically 1144 compiling this code remain the same, i.e. 'options MROUTING'. 1145 114620090315: 1147 Support for the IFF_NEEDSGIANT network interface flag has been 1148 removed, which means that non-MPSAFE network device drivers are no 1149 longer supported. In particular, if_ar, if_sr, and network device 1150 drivers from the old (legacy) USB stack can no longer be built or 1151 used. 1152 115320090313: 1154 POSIX.1 Native Language Support (NLS) has been enabled in libc and 1155 a bunch of new language catalog files have also been added. 1156 This means that some common libc messages are now localized and 1157 they depend on the LC_MESSAGES environmental variable. 1158 115920090313: 1160 The k8temp(4) driver has been renamed to amdtemp(4) since 1161 support for Family 10 and Family 11 CPU families was added. 1162 116320090309: 1164 IGMPv3 and Source-Specific Multicast (SSM) have been merged 1165 to the IPv4 stack. VIMAGE hooks are in but not yet used. 1166 1167 For kernel developers, the most important changes are that the 1168 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(), 1169 and this lock has been downgraded to a non-recursive mutex. 1170 1171 Transport protocols (UDP, Raw IP) are now responsible for filtering 1172 inbound multicast traffic according to group membership and source 1173 filters. The imo_multicast_filter() KPI exists for this purpose. 1174 Transports which do not use multicast (SCTP, TCP) already reject 1175 multicast by default. Forwarding and receive performance may improve 1176 as a mutex acquisition is no longer needed in the ip_input() 1177 low-level input path. in_addmulti() and in_delmulti() are shimmed 1178 to new KPIs which exist to support SSM in-kernel. 1179 1180 For application developers, it is recommended that loopback of 1181 multicast datagrams be disabled for best performance, as this 1182 will still cause the lock to be taken for each looped-back 1183 datagram transmission. The net.inet.ip.mcast.loop sysctl may 1184 be tuned to 0 to disable loopback by default; it defaults to 1 1185 to preserve the existing behaviour. 1186 1187 For systems administrators, to obtain best performance with 1188 multicast reception and multiple groups, it is always recommended 1189 that a card with a suitably precise hash filter is used. Hash 1190 collisions will still result in the lock being taken within the 1191 transport protocol input path to check group membership. 1192 1193 If deploying FreeBSD in an environment with IGMP snooping switches, 1194 it is recommended that the net.inet.igmp.sendlocal sysctl remain 1195 enabled; this forces 224.0.0.0/24 group membership to be announced 1196 via IGMP. 1197 1198 The size of 'struct igmpstat' has changed; netstat needs to be 1199 recompiled to reflect this. 1200 Bump __FreeBSD_version to 800070. 1201 120220090309: 1203 libusb20.so.1 is now installed as libusb.so.1 and the ports system 1204 updated to use it. This requires a buildworld/installworld in order to 1205 update the library and dependencies (usbconfig, etc). Its advisable to 1206 rebuild all ports which uses libusb. More specific directions are given 1207 in the ports collection UPDATING file. Any /etc/libmap.conf entries for 1208 libusb are no longer required and can be removed. 1209 121020090302: 1211 A workaround is committed to allow the creation of System V shared 1212 memory segment of size > 2 GB on the 64-bit architectures. 1213 Due to a limitation of the existing ABI, the shm_segsz member 1214 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is 1215 wrong for large segments. Note that limits must be explicitly 1216 raised to allow such segments to be created. 1217 121820090301: 1219 The layout of struct ifnet has changed, requiring a rebuild of all 1220 network device driver modules. 1221 122220090227: 1223 The /dev handling for the new USB stack has changed, a 1224 buildworld/installworld is required for libusb20. 1225 122620090223: 1227 The new USB2 stack has now been permanently moved in and all kernel and 1228 module names reverted to their previous values (eg, usb, ehci, ohci, 1229 ums, ...). The old usb stack can be compiled in by prefixing the name 1230 with the letter 'o', the old usb modules have been removed. 1231 Updating entry 20090216 for xorg and 20090215 for libmap may still 1232 apply. 1233 123420090217: 1235 The rc.conf(5) option if_up_delay has been renamed to 1236 defaultroute_delay to better reflect its purpose. If you have 1237 customized this setting in /etc/rc.conf you need to update it to 1238 use the new name. 1239 124020090216: 1241 xorg 7.4 wants to configure its input devices via hald which does not 1242 yet work with USB2. If the keyboard/mouse does not work in xorg then 1243 add 1244 Option "AllowEmptyInput" "off" 1245 to your ServerLayout section. This will cause X to use the configured 1246 kbd and mouse sections from your xorg.conf. 1247 124820090215: 1249 The GENERIC kernels for all architectures now default to the new USB2 1250 stack. No kernel config options or code have been removed so if a 1251 problem arises please report it and optionally revert to the old USB 1252 stack. If you are loading USB kernel modules or have a custom kernel 1253 that includes GENERIC then ensure that usb names are also changed over, 1254 eg uftdi -> usb2_serial_ftdi. 1255 1256 Older programs linked against the ports libusb 0.1 need to be 1257 redirected to the new stack's libusb20. /etc/libmap.conf can 1258 be used for this: 1259 # Map old usb library to new one for usb2 stack 1260 libusb-0.1.so.8 libusb20.so.1 1261 126220090209: 1263 All USB ethernet devices now attach as interfaces under the name ueN 1264 (eg. ue0). This is to provide a predictable name as vendors often 1265 change usb chipsets in a product without notice. 1266 126720090203: 1268 The ichsmb(4) driver has been changed to require SMBus slave 1269 addresses be left-justified (xxxxxxx0b) rather than right-justified. 1270 All of the other SMBus controller drivers require left-justified 1271 slave addresses, so this change makes all the drivers provide the 1272 same interface. 1273 127420090201: 1275 INET6 statistics (struct ip6stat) was updated. 1276 netstat(1) needs to be recompiled. 1277 127820090119: 1279 NTFS has been removed from GENERIC kernel on amd64 to match 1280 GENERIC on i386. Should not cause any issues since mount_ntfs(8) 1281 will load ntfs.ko module automatically when NTFS support is 1282 actually needed, unless ntfs.ko is not installed or security 1283 level prohibits loading kernel modules. If either is the case, 1284 "options NTFS" has to be added into kernel config. 1285 128620090115: 1287 TCP Appropriate Byte Counting (RFC 3465) support added to kernel. 1288 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to 1289 800061. User space tools that rely on the size of struct tcpcb in 1290 tcp_var.h (e.g. sockstat) need to be recompiled. 1291 129220081225: 1293 ng_tty(4) module updated to match the new TTY subsystem. 1294 Due to API change, user-level applications must be updated. 1295 New API support added to mpd5 CVS and expected to be present 1296 in next mpd5.3 release. 1297 129820081219: 1299 With __FreeBSD_version 800060 the makefs tool is part of 1300 the base system (it was a port). 1301 130220081216: 1303 The afdata and ifnet locks have been changed from mutexes to 1304 rwlocks, network modules will need to be re-compiled. 1305 130620081214: 1307 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite. 1308 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated. 1309 The new code reduced struct rtentry{} by 16 bytes on 32-bit 1310 architecture and 40 bytes on 64-bit architecture. The userland 1311 applications "arp" and "ndp" have been updated accordingly. 1312 The output from "netstat -r" shows only routing entries and 1313 none of the L2 information. 1314 131520081130: 1316 __FreeBSD_version 800057 marks the switchover from the 1317 binary ath hal to source code. Users must add the line: 1318 1319 options AH_SUPPORT_AR5416 1320 1321 to their kernel config files when specifying: 1322 1323 device ath_hal 1324 1325 The ath_hal module no longer exists; the code is now compiled 1326 together with the driver in the ath module. It is now 1327 possible to tailor chip support (i.e. reduce the set of chips 1328 and thereby the code size); consult ath_hal(4) for details. 1329 133020081121: 1331 __FreeBSD_version 800054 adds memory barriers to 1332 <machine/atomic.h>, new interfaces to ifnet to facilitate 1333 multiple hardware transmit queues for cards that support 1334 them, and a lock-less ring-buffer implementation to 1335 enable drivers to more efficiently manage queueing of 1336 packets. 1337 133820081117: 1339 A new version of ZFS (version 13) has been merged to -HEAD. 1340 This version has zpool attribute "listsnapshots" off by 1341 default, which means "zfs list" does not show snapshots, 1342 and is the same as Solaris behavior. 1343 134420081028: 1345 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled. 1346 134720081009: 1348 The uhci, ohci, ehci and slhci USB Host controller drivers have 1349 been put into separate modules. If you load the usb module 1350 separately through loader.conf you will need to load the 1351 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0 1352 controller add the following to loader.conf: 1353 1354 uhci_load="YES" 1355 ehci_load="YES" 1356 135720081009: 1358 The ABI used by the PMC toolset has changed. Please keep 1359 userland (libpmc(3)) and the kernel module (hwpmc(4)) in 1360 sync. 1361 136220081009: 1363 atapci kernel module now includes only generic PCI ATA 1364 driver. AHCI driver moved to ataahci kernel module. 1365 All vendor-specific code moved into separate kernel modules: 1366 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek, 1367 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron, 1368 atamarvell, atamicron, atanational, atanetcell, atanvidia, 1369 atapromise, ataserverworks, atasiliconimage, atasis, atavia 1370 137120080820: 1372 The TTY subsystem of the kernel has been replaced by a new 1373 implementation, which provides better scalability and an 1374 improved driver model. Most common drivers have been migrated to 1375 the new TTY subsystem, while others have not. The following 1376 drivers have not yet been ported to the new TTY layer: 1377 1378 PCI/ISA: 1379 cy, digi, rc, rp, sio 1380 1381 USB: 1382 ubser, ucycom 1383 1384 Line disciplines: 1385 ng_h4, ng_tty, ppp, sl, snp 1386 1387 Adding these drivers to your kernel configuration file shall 1388 cause compilation to fail. 1389 139020080818: 1391 ntpd has been upgraded to 4.2.4p5. 1392 139320080801: 1394 OpenSSH has been upgraded to 5.1p1. 1395 1396 For many years, FreeBSD's version of OpenSSH preferred DSA 1397 over RSA for host and user authentication keys. With this 1398 upgrade, we've switched to the vendor's default of RSA over 1399 DSA. This may cause upgraded clients to warn about unknown 1400 host keys even for previously known hosts. Users should 1401 follow the usual procedure for verifying host keys before 1402 accepting the RSA key. 1403 1404 This can be circumvented by setting the "HostKeyAlgorithms" 1405 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh 1406 command line. 1407 1408 Please note that the sequence of keys offered for 1409 authentication has been changed as well. You may want to 1410 specify IdentityFile in a different order to revert this 1411 behavior. 1412 141320080713: 1414 The sio(4) driver has been removed from the i386 and amd64 1415 kernel configuration files. This means uart(4) is now the 1416 default serial port driver on those platforms as well. 1417 1418 To prevent collisions with the sio(4) driver, the uart(4) driver 1419 uses different names for its device nodes. This means the 1420 onboard serial port will now most likely be called "ttyu0" 1421 instead of "ttyd0". You may need to reconfigure applications to 1422 use the new device names. 1423 1424 When using the serial port as a boot console, be sure to update 1425 /boot/device.hints and /etc/ttys before booting the new kernel. 1426 If you forget to do so, you can still manually specify the hints 1427 at the loader prompt: 1428 1429 set hint.uart.0.at="isa" 1430 set hint.uart.0.port="0x3F8" 1431 set hint.uart.0.flags="0x10" 1432 set hint.uart.0.irq="4" 1433 boot -s 1434 143520080609: 1436 The gpt(8) utility has been removed. Use gpart(8) to partition 1437 disks instead. 1438 143920080603: 1440 The version that Linuxulator emulates was changed from 2.4.2 1441 to 2.6.16. If you experience any problems with Linux binaries 1442 please try to set sysctl compat.linux.osrelease to 2.4.2 and 1443 if it fixes the problem contact emulation mailing list. 1444 144520080525: 1446 ISDN4BSD (I4B) was removed from the src tree. You may need to 1447 update a your kernel configuration and remove relevant entries. 1448 144920080509: 1450 I have checked in code to support multiple routing tables. 1451 See the man pages setfib(1) and setfib(2). 1452 This is a hopefully backwards compatible version, 1453 but to make use of it you need to compile your kernel 1454 with options ROUTETABLES=2 (or more up to 16). 1455 145620080420: 1457 The 802.11 wireless support was redone to enable multi-bss 1458 operation on devices that are capable. The underlying device 1459 is no longer used directly but instead wlanX devices are 1460 cloned with ifconfig. This requires changes to rc.conf files. 1461 For example, change: 1462 ifconfig_ath0="WPA DHCP" 1463 to 1464 wlans_ath0=wlan0 1465 ifconfig_wlan0="WPA DHCP" 1466 see rc.conf(5) for more details. In addition, mergemaster of 1467 /etc/rc.d is highly recommended. Simultaneous update of userland 1468 and kernel wouldn't hurt either. 1469 1470 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta 1471 modules were merged into the base wlan module. All references 1472 to these modules (e.g. in kernel config files) must be removed. 1473 147420080408: 1475 psm(4) has gained write(2) support in native operation level. 1476 Arbitrary commands can be written to /dev/psm%d and status can 1477 be read back from it. Therefore, an application is responsible 1478 for status validation and error recovery. It is a no-op in 1479 other operation levels. 1480 148120080312: 1482 Support for KSE threading has been removed from the kernel. To 1483 run legacy applications linked against KSE libmap.conf may 1484 be used. The following libmap.conf may be used to ensure 1485 compatibility with any prior release: 1486 1487 libpthread.so.1 libthr.so.1 1488 libpthread.so.2 libthr.so.2 1489 libkse.so.3 libthr.so.3 1490 149120080301: 1492 The layout of struct vmspace has changed. This affects libkvm 1493 and any executables that link against libkvm and use the 1494 kvm_getprocs() function. In particular, but not exclusively, 1495 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1). 1496 The effects are minimal, but it's advisable to upgrade world 1497 nonetheless. 1498 149920080229: 1500 The latest em driver no longer has support in it for the 1501 82575 adapter, this is now moved to the igb driver. The 1502 split was done to make new features that are incompatible 1503 with older hardware easier to do. 1504 150520080220: 1506 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4), 1507 likewise the kernel option is now GEOM_LINUX_LVM. 1508 150920080211: 1510 The default NFS mount mode has changed from UDP to TCP for 1511 increased reliability. If you rely on (insecurely) NFS 1512 mounting across a firewall you may need to update your 1513 firewall rules. 1514 151520080208: 1516 Belatedly note the addition of m_collapse for compacting 1517 mbuf chains. 1518 151920080126: 1520 The fts(3) structures have been changed to use adequate 1521 integer types for their members and so to be able to cope 1522 with huge file trees. The old fts(3) ABI is preserved 1523 through symbol versioning in libc, so third-party binaries 1524 using fts(3) should still work, although they will not take 1525 advantage of the extended types. At the same time, some 1526 third-party software might fail to build after this change 1527 due to unportable assumptions made in its source code about 1528 fts(3) structure members. Such software should be fixed 1529 by its vendor or, in the worst case, in the ports tree. 1530 FreeBSD_version 800015 marks this change for the unlikely 1531 case that a portable fix is impossible. 1532 153320080123: 1534 To upgrade to -current after this date, you must be running 1535 FreeBSD not older than 6.0-RELEASE. Upgrading to -current 1536 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems. 1537 153820071128: 1539 The ADAPTIVE_GIANT kernel option has been retired because its 1540 functionality is the default now. 1541 154220071118: 1543 The AT keyboard emulation of sunkbd(4) has been turned on 1544 by default. In order to make the special symbols of the Sun 1545 keyboards driven by sunkbd(4) work under X these now have 1546 to be configured the same way as Sun USB keyboards driven 1547 by ukbd(4) (which also does AT keyboard emulation), f.e.: 1548 1549 Option "XkbLayout" "us" 1550 Option "XkbRules" "xorg" 1551 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us" 1552 155320071024: 1554 It has been decided that it is desirable to provide ABI 1555 backwards compatibility to the FreeBSD 4/5/6 versions of the 1556 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was 1557 broken with the introduction of PCI domain support (see the 1558 20070930 entry). Unfortunately, this required the ABI of 1559 PCIOCGETCONF to be broken again in order to be able to 1560 provide backwards compatibility to the old version of that 1561 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled 1562 again. As for prominent ports this affects neither pciutils 1563 nor xorg-server this time, the hal port needs to be rebuilt 1564 however. 1565 156620071020: 1567 The misnamed kthread_create() and friends have been renamed 1568 to kproc_create() etc. Many of the callers already 1569 used kproc_start().. 1570 I will return kthread_create() and friends in a while 1571 with implementations that actually create threads, not procs. 1572 Renaming corresponds with version 800002. 1573 157420071010: 1575 RELENG_7 branched. 1576 1577COMMON ITEMS: 1578 1579 General Notes 1580 ------------- 1581 Avoid using make -j when upgrading. While generally safe, there are 1582 sometimes problems using -j to upgrade. If your upgrade fails with 1583 -j, please try again without -j. From time to time in the past there 1584 have been problems using -j with buildworld and/or installworld. This 1585 is especially true when upgrading between "distant" versions (eg one 1586 that cross a major release boundary or several minor releases, or when 1587 several months have passed on the -current branch). 1588 1589 Sometimes, obscure build problems are the result of environment 1590 poisoning. This can happen because the make utility reads its 1591 environment when searching for values for global variables. To run 1592 your build attempts in an "environmental clean room", prefix all make 1593 commands with 'env -i '. See the env(1) manual page for more details. 1594 1595 When upgrading from one major version to another it is generally best 1596 to upgrade to the latest code in the currently installed branch first, 1597 then do an upgrade to the new branch. This is the best-tested upgrade 1598 path, and has the highest probability of being successful. Please try 1599 this approach before reporting problems with a major version upgrade. 1600 1601 ZFS notes 1602 --------- 1603 When upgrading the boot ZFS pool to a new version, always follow 1604 these two steps: 1605 1606 1.) recompile and reinstall the ZFS boot loader and boot block 1607 (this is part of "make buildworld" and "make installworld") 1608 1609 2.) update the ZFS boot block on your boot drive 1610 1611 The following example updates the ZFS boot block on the first 1612 partition (freebsd-boot) of a GPT partitioned drive ad0: 1613 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0" 1614 1615 Non-boot pools do not need these updates. 1616 1617 To build a kernel 1618 ----------------- 1619 If you are updating from a prior version of FreeBSD (even one just 1620 a few days old), you should follow this procedure. It is the most 1621 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld, 1622 1623 make kernel-toolchain 1624 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE 1625 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE 1626 1627 To test a kernel once 1628 --------------------- 1629 If you just want to boot a kernel once (because you are not sure 1630 if it works, or if you want to boot a known bad kernel to provide 1631 debugging information) run 1632 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel 1633 nextboot -k testkernel 1634 1635 To just build a kernel when you know that it won't mess you up 1636 -------------------------------------------------------------- 1637 This assumes you are already running a CURRENT system. Replace 1638 ${arch} with the architecture of your machine (e.g. "i386", 1639 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc). 1640 1641 cd src/sys/${arch}/conf 1642 config KERNEL_NAME_HERE 1643 cd ../compile/KERNEL_NAME_HERE 1644 make depend 1645 make 1646 make install 1647 1648 If this fails, go to the "To build a kernel" section. 1649 1650 To rebuild everything and install it on the current system. 1651 ----------------------------------------------------------- 1652 # Note: sometimes if you are running current you gotta do more than 1653 # is listed here if you are upgrading from a really old current. 1654 1655 <make sure you have good level 0 dumps> 1656 make buildworld 1657 make kernel KERNCONF=YOUR_KERNEL_HERE 1658 [1] 1659 <reboot in single user> [3] 1660 mergemaster -p [5] 1661 make installworld 1662 mergemaster -i [4] 1663 make delete-old [6] 1664 <reboot> 1665 1666 1667 To cross-install current onto a separate partition 1668 -------------------------------------------------- 1669 # In this approach we use a separate partition to hold 1670 # current's root, 'usr', and 'var' directories. A partition 1671 # holding "/", "/usr" and "/var" should be about 2GB in 1672 # size. 1673 1674 <make sure you have good level 0 dumps> 1675 <boot into -stable> 1676 make buildworld 1677 make buildkernel KERNCONF=YOUR_KERNEL_HERE 1678 <maybe newfs current's root partition> 1679 <mount current's root partition on directory ${CURRENT_ROOT}> 1680 make installworld DESTDIR=${CURRENT_ROOT} 1681 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd 1682 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT} 1683 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd 1684 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition> 1685 <reboot into current> 1686 <do a "native" rebuild/install as described in the previous section> 1687 <maybe install compatibility libraries from ports/misc/compat*> 1688 <reboot> 1689 1690 1691 To upgrade in-place from stable to current 1692 ---------------------------------------------- 1693 <make sure you have good level 0 dumps> 1694 make buildworld [9] 1695 make kernel KERNCONF=YOUR_KERNEL_HERE [8] 1696 [1] 1697 <reboot in single user> [3] 1698 mergemaster -p [5] 1699 make installworld 1700 mergemaster -i [4] 1701 make delete-old [6] 1702 <reboot> 1703 1704 Make sure that you've read the UPDATING file to understand the 1705 tweaks to various things you need. At this point in the life 1706 cycle of current, things change often and you are on your own 1707 to cope. The defaults can also change, so please read ALL of 1708 the UPDATING entries. 1709 1710 Also, if you are tracking -current, you must be subscribed to 1711 freebsd-current@freebsd.org. Make sure that before you update 1712 your sources that you have read and understood all the recent 1713 messages there. If in doubt, please track -stable which has 1714 much fewer pitfalls. 1715 1716 [1] If you have third party modules, such as vmware, you 1717 should disable them at this point so they don't crash your 1718 system on reboot. 1719 1720 [3] From the bootblocks, boot -s, and then do 1721 fsck -p 1722 mount -u / 1723 mount -a 1724 cd src 1725 adjkerntz -i # if CMOS is wall time 1726 Also, when doing a major release upgrade, it is required that 1727 you boot into single user mode to do the installworld. 1728 1729 [4] Note: This step is non-optional. Failure to do this step 1730 can result in a significant reduction in the functionality of the 1731 system. Attempting to do it by hand is not recommended and those 1732 that pursue this avenue should read this file carefully, as well 1733 as the archives of freebsd-current and freebsd-hackers mailing lists 1734 for potential gotchas. The -U option is also useful to consider. 1735 See mergemaster(8) for more information. 1736 1737 [5] Usually this step is a noop. However, from time to time 1738 you may need to do this if you get unknown user in the following 1739 step. It never hurts to do it all the time. You may need to 1740 install a new mergemaster (cd src/usr.sbin/mergemaster && make 1741 install) after the buildworld before this step if you last updated 1742 from current before 20020224 or from -stable before 20020408. 1743 1744 [6] This only deletes old files and directories. Old libraries 1745 can be deleted by "make delete-old-libs", but you have to make 1746 sure that no program is using those libraries anymore. 1747 1748 [8] In order to have a kernel that can run the 4.x binaries needed to 1749 do an installworld, you must include the COMPAT_FREEBSD4 option in 1750 your kernel. Failure to do so may leave you with a system that is 1751 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is 1752 required to run the 5.x binaries on more recent kernels. And so on 1753 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7. 1754 1755 Make sure that you merge any new devices from GENERIC since the 1756 last time you updated your kernel config file. 1757 1758 [9] When checking out sources, you must include the -P flag to have 1759 cvs prune empty directories. 1760 1761 If CPUTYPE is defined in your /etc/make.conf, make sure to use the 1762 "?=" instead of the "=" assignment operator, so that buildworld can 1763 override the CPUTYPE if it needs to. 1764 1765 MAKEOBJDIRPREFIX must be defined in an environment variable, and 1766 not on the command line, or in /etc/make.conf. buildworld will 1767 warn if it is improperly defined. 1768FORMAT: 1769 1770This file contains a list, in reverse chronological order, of major 1771breakages in tracking -current. It is not guaranteed to be a complete 1772list of such breakages, and only contains entries since October 10, 2007. 1773If you need to see UPDATING entries from before that date, you will need 1774to fetch an UPDATING file from an older FreeBSD release. 1775 1776Copyright information: 1777 1778Copyright 1998-2009 M. Warner Losh. All Rights Reserved. 1779 1780Redistribution, publication, translation and use, with or without 1781modification, in full or in part, in any form or format of this 1782document are permitted without further permission from the author. 1783 1784THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR 1785IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 1786WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 1787DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT, 1788INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 1789(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 1790SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 1791HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 1792STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 1793IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 1794POSSIBILITY OF SUCH DAMAGE. 1795 1796Contact Warner Losh if you have any questions about your use of 1797this document. 1798 1799$FreeBSD: head/UPDATING 249201 2013-04-06 13:47:44Z mav $ 1800