UPDATING revision 288512
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 9 http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html 10 11Items affecting the ports and packages system can be found in 12/usr/ports/UPDATING. Please read that file before running portupgrade. 13 1420151002: p28 FreeBSD-SA-15:24.rpcbind [revised] 15 Revised patch to address a regression that prevents NIS from working. 16 1720150929: p27 FreeBSD-SA-15:24.rpcbind 18 19 Fix rpcbind(8) remote denial of service. [SA-15:24] 20 2120150916: p26 FreeBSD-EN-15:18.pkg 22 23 Implement pubkey support for pkg(7) bootstrap. [EN-15:18] 24 2520150902: p25 FreeBSD-SA-15:23.bind 26 27 Fix BIND remote denial of service vulnerability. [SA-15:23] 28 2920150825: p24 FreeBSD-SA-15:21.amd64 30 FreeBSD-SA-15:22.openssh 31 FreeBSD-EN-15:15.pkg 32 33 Fix local privilege escalation in IRET handler. [SA-15:21] 34 35 Fix OpenSSH multiple vulnerabilities. [SA-15:22] 36 37 Fix insufficient check of unsupported pkg(7) signature methods. 38 [EN-15:15] 39 4020150818: p23 FreeBSD-SA-15:20.expat 41 42 Fix multiple integer overflows in expat (libbsdxml) XML parser. 43 [SA-15:20] 44 4520150805: p22 FreeBSD-SA-15:19.routed 46 47 Fix routed remote denial of service vulnerability. 48 4920150728: p21 FreeBSD-SA-15:15.tcp 50 FreeBSD-SA-15:16.openssh 51 FreeBSD-SA-15:17.bind 52 53 Fix resource exhaustion in TCP reassembly. [SA-15:15] 54 55 Fix OpenSSH multiple vulnerabilities. [SA-15:16] 56 57 Fix BIND remote denial of service vulnerability. [SA-15:17] 58 5920150721: p20 FreeBSD-SA-15:13.tcp 60 61 Fix resource exhaustion due to sessions stuck in LAST_ACK state. 62 [SA-15:13] 63 6420150707: p19 FreeBSD-SA-15:11.bind 65 Fix BIND resolver remote denial of service when validating. 66 6720150630: p18 FreeBSD-EN-15:08.sendmail [revised] 68 FreeBSD-EN-15:09.xlocale 69 70 Improvements to sendmail TLS/DH interoperability. [EN-15:08] 71 72 Fix inconsistency between locale and rune locale states. 73 [EN-15:09] 74 7520150618: p17 FreeBSD-EN-15:08.sendmail 76 Improvements to sendmail TLS/DH interoperability. [EN-15:08] 77 7820150612: p16 FreeBSD-SA-15:10.openssl 79 Fix multiple vulnerabilities in OpenSSL. [SA-15:10] 80 8120150609: p15 FreeBSD-EN-15:06.file 82 83 Updated base system file(1) to 5.22 to address multiple denial 84 of service issues. 85 8620150513: p14 FreeBSD-EN-15:04.freebsd-update 87 88 Fix bug with freebsd-update(8) that does not ensure the previous 89 upgrade was completed. [EN-15:04] 90 9120150407: p13 FreeBSD-SA-15:04.igmp [revised] 92 FreeBSD-SA-15:07.ntp 93 FreeBSD-SA-15:09.ipv6 94 95 Improved patch for SA-15:04.igmp. 96 97 Fix multiple vulnerabilities of ntp. [SA-15:07] 98 99 Fix Denial of Service with IPv6 Router Advertisements. [SA-15:09] 100 10120150320: p12 102 Fix patch for SA-15:06.openssl. 103 10420150319: p11 FreeBSD-SA-15:06.openssl 105 Fix multiple vulnerabilities in OpenSSL. [SA-15:06] 106 10720150225: p10 FreeBSD-SA-15:04.igmp 108 FreeBSD-SA-15:05.bind 109 FreeBSD-EN-15:01.vt 110 FreeBSD-EN-15:02.openssl 111 FreeBSD-EN-15:03.freebsd-update 112 113 Fix integer overflow in IGMP protocol. [SA-15:04] 114 115 Fix BIND remote denial of service vulnerability. [SA-15:05] 116 117 Fix vt(4) crash with improper ioctl parameters. [EN-15:01] 118 119 Updated base system OpenSSL to 0.9.8zd. [EN-15:02] 120 121 Fix freebsd-update libraries update ordering issue. [EN-15:03] 122 12320150127: p9 FreeBSD-SA-15:02.kmem 124 FreeBSD-SA-15:03.sctp 125 126 Fix SCTP SCTP_SS_VALUE kernel memory corruption and disclosure 127 vulnerability. [SA-15:02] 128 129 Fix SCTP stream reset vulnerability. [SA-15:03] 130 13120150114: p8 FreeBSD-SA-15:01.openssl 132 Fix multiple vulnerabilities in OpenSSL. [SA-15:01] 133 13420141223: p7 FreeBSD-SA-14:31.ntp 135 FreeBSD-EN-14:13.freebsd-update 136 137 Fix multiple vulnerabilities in NTP suite. [SA-14:31] 138 Fix directory deletion issue in freebsd-update. [EN-14:13] 139 14020141210: p6 FreeBSD-SA-14:28.file 141 FreeBSD-SA-14:29.bind 142 143 Fix multiple vulnerabilities in file(1) and libmagic(3). 144 [SA-14:28] 145 146 Fix BIND remote denial of service vulnerability. [SA-14:29] 147 14820141104: p5 FreeBSD-SA-14:25.setlogin 149 FreeBSD-SA-14:26.ftp 150 FreeBSD-EN-14:12.zfs 151 152 Fix kernel stack disclosure in setlogin(2) / getlogin(2). 153 [SA-14:25] 154 155 Fix remote command execution in ftp(1). [SA-14:26] 156 157 Fix NFSv4 and ZFS cache consistency issue. [EN-14:12] 158 15920141022: p4 FreeBSD-EN-14:10.tzdata 160 FreeBSD-EN-14:11.crypt 161 162 Time zone data file update. [EN-14:10] 163 164 Change crypt(3) default hashing algorithm back to DES. [EN-14:11] 165 16620141021: p3 FreeBSD-SA-14:20.rtsold 167 FreeBSD-SA-14:21.routed 168 FreeBSD-SA-14:22.namei 169 FreeBSD-SA-14:23.openssl 170 171 Fix rtsold(8) remote buffer overflow vulnerability. [SA-14:20] 172 173 Fix routed(8) remote denial of service vulnerability. [SA-14:21] 174 175 Fix memory leak in sandboxed namei lookup. [SA-14:22] 176 177 Fix OpenSSL multiple vulnerabilities. [SA-14:23] 178 17920140916: p2 FreeBSD-SA-14:19.tcp 180 Fix Denial of Service in TCP packet processing. [SA-14:19] 181 18220140909: p1 FreeBSD-SA-14:18.openssl 183 Fix OpenSSL multiple vulnerabilities. [SA-14:18] 184 18520140716: 186 9.3-RELEASE. 187 18820140608: 189 On i386 and amd64 systems, the onifconsole flag is now set by default 190 in /etc/ttys for ttyu0. This causes ttyu0 to be automatically enabled 191 as a login TTY if it is set in the bootloader as an active kernel 192 console. No changes in behavior should result otherwise. To revert to 193 the previous behavior, set ttyu0 to "off" in /etc/ttys. 194 19520140512: 196 Clang and llvm have been upgraded to 3.4.1 release. 197 19820140321: 199 Clang and llvm have been upgraded to 3.4 release. 200 20120140216: 202 The nve(4) driver for NVIDIA nForce MCP Ethernet adapters has 203 been deprecated and will not be part of FreeBSD 11.0 and later 204 releases. If you use this driver, please consider switching to 205 the nfe(4) driver instead. 206 20720131216: 208 The behavior of gss_pseudo_random() for the krb5 mechanism 209 has changed, for applications requesting a longer random string 210 than produced by the underlying enctype's pseudo-random() function. 211 In particular, the random string produced from a session key of 212 enctype aes256-cts-hmac-sha1-96 or aes256-cts-hmac-sha1-96 will 213 be different at the 17th octet and later, after this change. 214 The counter used in the PRF+ construction is now encoded as a 215 big-endian integer in accordance with RFC 4402. 216 __FreeBSD_version is bumped to 902505. 217 21820130930: 219 9.2-RELEASE. 220 22120130823: 222 Behavior of devfs rules path matching has been changed. 223 Pattern is now always matched against fully qualified devfs 224 path and slash characters must be explicitly matched by 225 slashes in pattern (FNM_PATHNAME). Rulesets involving devfs 226 subdirectories must be reviewed. 227 22820130705: 229 hastctl(8)'s `status' command output changed to terse one-liner format. 230 Scripts using this should switch to `list' command or be rewritten. 231 23220130618: 233 Fix a bug that allowed a tracing process (e.g. gdb) to write 234 to a memory-mapped file in the traced process's address space 235 even if neither the traced process nor the tracing process had 236 write access to that file. 237 23820130605: 239 Added ZFS TRIM support which is enabled by default. To disable 240 ZFS TRIM support set vfs.zfs.trim.enabled=0 in loader.conf. 241 242 Creating new ZFS pools and adding new devices to existing pools 243 first performs a full device level TRIM which can take a significant 244 amount of time. The sysctl vfs.zfs.vdev.trim_on_init can be set to 0 245 to disable this behaviour. 246 247 ZFS TRIM requires the underlying device support BIO_DELETE which 248 is currently provided by methods such as ATA TRIM and SCSI UNMAP 249 via CAM, which are typically supported by SSD's. 250 251 Stats for ZFS TRIM can be monitored by looking at the sysctl's 252 under kstat.zfs.misc.zio_trim. 253 25420130524: 255 `list' command has been added to hastctl(8). For now, it is full 256 equivalent of `status' command. 257 WARNING: in the near future the output of hastctl's status command 258 will change to more terse format. If you use `hastctl status' 259 for parsing in your scripts, switch to `hastctl list'. 260 26120130430: 262 The mergemaster command now uses the default MAKEOBJDIRPREFIX 263 rather than creating it's own in the temporary directory in 264 order allow access to bootstrapped versions of tools such as 265 install and mtree. When upgrading from version of FreeBSD where 266 the install command does not support -l, you will need to 267 install a new mergemaster command if mergemaster -p is required. 268 This can be accomplished with the command (cd src/usr.sbin/mergemaster 269 && make install). 270 271 Due to the use of the new -l option to install(1) during build 272 and install, you must take care not to directly set the INSTALL 273 make variable in your /etc/make.conf, /etc/src.conf, or on the 274 command line. If you wish to use the -C flag for all installs 275 you may be able to add INSTALL+=-C to /etc/make.conf or 276 /etc/src.conf. 277 27820130429: 279 Fix a bug that allows NFS clients to issue READDIR on files. 280 28120130315: 282 The install(1) option -M has changed meaning and now takes an 283 argument that is a file or path to append logs to. In the 284 unlikely event that -M was the last option on the command line 285 and the command line contained at least two files and a target 286 directory the first file will have logs appended to it. The -M 287 option served little practical purpose in the last decade so it's 288 used expected to be extremely rare. 289 29020130225: 291 A new compression method (lz4) has been merged to. Please refer to 292 zpool-features(7) for more information. 293 294 Please refer to the "ZFS notes" section of this file for information 295 on upgrading boot ZFS pools. 296 29720121224: 298 The VFS KBI was changed with the merge of several nullfs 299 optimizations and fixes. All filesystem modules must be 300 recompiled. 301 30220121218: 303 With the addition of auditdistd(8), a new auditdistd user is now 304 depended on during installworld. "mergemaster -p" can be used to add 305 the user prior to installworld, as documented in the handbook. 306 30720121205: 308 9.1-RELEASE. 309 31020121129: 311 A new version of ZFS (pool version 5000) has been merged to 9-STABLE. 312 Starting with this version the old system of ZFS pool versioning 313 is superseded by "feature flags". This concept enables forward 314 compatibility against certain future changes in functionality of ZFS 315 pools. The first two read-only compatible "feature flags" for ZFS 316 pools are "com.delphix:async_destroy" and "com.delphix:empty_bpobj". 317 For more information read the new zpool-features(7) manual page. 318 Please refer to the "ZFS notes" section of this file for information 319 on upgrading boot ZFS pools. 320 32120121114: 322 The commit introducing bsd.compiler.mk breaks the traditional 323 building of kernels before this point. Add -m ${SRC}/share/mk 324 (for the right value of SRC) to your command lines to work 325 around; update your useland to a point after this; or use the 326 buildkernel/installkernel top-level targets. See also 20120829. 327 32820121102: 329 The IPFIREWALL_FORWARD kernel option has been removed. Its 330 functionality now turned on by default. 331 33220120913: 333 The random(4) support for the VIA hardware random number 334 generator (`PADLOCK') is no longer enabled unconditionally. 335 Add the PADLOCK_RNG option in the custom kernel config if 336 needed. The GENERIC kernels on i386 and amd64 do include the 337 option, so the change only affects the custom kernel 338 configurations. 339 34020120829: 341 The amd64 kernel now uses xsetbv, xrstor instructions. To compile with 342 the traditional method, you must update your system with an installworld 343 before the kernel will build. The documented make buildkernel/installkernel 344 interfaces (coupled with fresh make kernel-toolchain) continue to work. 345 34620120727: 347 The sparc64 ZFS loader has been changed to no longer try to auto- 348 detect ZFS providers based on diskN aliases but now requires these 349 to be explicitly listed in the OFW boot-device environment variable. 350 35120120422: 352 Now unix domain sockets behave "as expected" on nullfs(5). Previously 353 nullfs(5) did not pass through all behaviours to the underlying layer, 354 as a result if we bound to a socket on the lower layer we could connect 355 only to the lower path; if we bound to the upper layer we could connect 356 only to the upper path. The new behavior is one can connect to both the 357 lower and the upper paths regardless what layer path one binds to. 358 35920120109: 360 The acpi_wmi(4) status device /dev/wmistat has been renamed to 361 /dev/wmistat0. 362 36320120106: 364 A new VOP_ADVISE() was added to support posix_fadvise(2). All 365 filesystem modules must be recompiled. 366 36720120106: 368 The interface of the VOP_VPTOCNP(9) changed, now the returned 369 vnode shall be referenced, previously it was required to be 370 only held. All in-tree filesystems are converted. 371 37220120106: 373 9.0-RELEASE. 374 37520111101: 376 The broken amd(4) driver has been replaced with esp(4) in the amd64, 377 i386 and pc98 GENERIC kernel configuration files. 378 37920110913: 380 This commit modifies vfs_register() so that it uses a hash 381 calculation to set vfc_typenum, which is enabled by default. 382 The first time a system is booted after this change, the 383 vfc_typenum values will change for all file systems. The 384 main effect of this is a change to the NFS server file handles 385 for file systems that use vfc_typenum in their fsid, such as ZFS. 386 It will, however, prevent vfc_typenum from changing when file 387 systems are loaded in a different order for subsequent reboots. 388 To disable this, you can set vfs.typenumhash=0 in /boot/loader.conf 389 until you are ready to remount all NFS clients after a reboot. 390 39120110828: 392 Bump the shared library version numbers for libraries that 393 do not use symbol versioning, have changed the ABI compared 394 to stable/8 and which shared library version was not bumped. 395 Done as part of 9.0-RELEASE cycle. 396 39720110815: 398 During the merge of Capsicum features, the fget(9) KPI was modified. 399 This may require the rebuilding of out-of-tree device drivers -- 400 issues have been reported specifically with the nVidia device driver. 401 __FreeBSD_version is bumped to 900041. 402 403 Also, there is a period between 20110811 and 20110814 where the 404 special devices /dev/{stdin,stdout,stderr} did not work correctly. 405 Building world from a kernel during that window may not work. 406 40720110628: 408 The packet filter (pf) code has been updated to OpenBSD 4.5. 409 You need to update userland tools to be in sync with kernel. 410 This update breaks backward compatibility with earlier pfsync(4) 411 versions. Care must be taken when updating redundant firewall setups. 412 41320110608: 414 The following sysctls and tunables are retired on x86 platforms: 415 machdep.hlt_cpus 416 machdep.hlt_logical_cpus 417 The following sysctl is retired: 418 machdep.hyperthreading_allowed 419 The sysctls were supposed to provide a way to dynamically offline and 420 online selected CPUs on x86 platforms, but the implementation has not 421 been reliable especially with SCHED_ULE scheduler. 422 machdep.hyperthreading_allowed tunable is still available to ignore 423 hyperthreading CPUs at OS level. 424 Individual CPUs can be disabled using hint.lapic.X.disabled tunable, 425 where X is an APIC ID of a CPU. Be advised, though, that disabling 426 CPUs in non-uniform fashion will result in non-uniform topology and 427 may lead to sub-optimal system performance with SCHED_ULE, which is 428 a default scheduler. 429 43020110607: 431 cpumask_t type is retired and cpuset_t is used in order to describe 432 a mask of CPUs. 433 43420110531: 435 Changes to ifconfig(8) for dynamic address family detection mandate 436 that you are running a kernel of 20110525 or later. Make sure to 437 follow the update procedure to boot a new kernel before installing 438 world. 439 44020110513: 441 Support for sun4v architecture is officially dropped 442 44320110503: 444 Several KPI breaking changes have been committed to the mii(4) layer, 445 the PHY drivers and consequently some Ethernet drivers using mii(4). 446 This means that miibus.ko and the modules of the affected Ethernet 447 drivers need to be recompiled. 448 449 Note to kernel developers: Given that the OUI bit reversion problem 450 was fixed as part of these changes all mii(4) commits related to OUIs, 451 i.e. to sys/dev/mii/miidevs, PHY driver probing and vendor specific 452 handling, no longer can be merged verbatim to stable/8 and previous 453 branches. 454 45520110430: 456 Users of the Atheros AR71xx SoC code now need to add 'device ar71xx_pci' 457 into their kernel configurations along with 'device pci'. 458 45920110427: 460 The default NFS client is now the new NFS client, so fstype "newnfs" 461 is now "nfs" and the regular/old NFS client is now fstype "oldnfs". 462 Although mounts via fstype "nfs" will usually work without userland 463 changes, it is recommended that the mount(8) and mount_nfs(8) 464 commands be rebuilt from sources and that a link to mount_nfs called 465 mount_oldnfs be created. The new client is compiled into the 466 kernel with "options NFSCL" and this is needed for diskless root 467 file systems. The GENERIC kernel configs have been changed to use 468 NFSCL and NFSD (the new server) instead of NFSCLIENT and NFSSERVER. 469 To use the regular/old client, you can "mount -t oldnfs ...". For 470 a diskless root file system, you must also include a line like: 471 472 vfs.root.mountfrom="oldnfs:" 473 474 in the boot/loader.conf on the root fs on the NFS server to make 475 a diskless root fs use the old client. 476 47720110424: 478 The GENERIC kernels for all architectures now default to the new 479 CAM-based ATA stack. It means that all legacy ATA drivers were 480 removed and replaced by respective CAM drivers. If you are using 481 ATA device names in /etc/fstab or other places, make sure to update 482 them respectively (adX -> adaY, acdX -> cdY, afdX -> daY, astX -> saY, 483 where 'Y's are the sequential numbers starting from zero for each type 484 in order of detection, unless configured otherwise with tunables, 485 see cam(4)). There will be symbolic links created in /dev/ to map 486 old adX devices to the respective adaY. They should provide basic 487 compatibility for file systems mounting in most cases, but they do 488 not support old user-level APIs and do not have respective providers 489 in GEOM. Consider using updated management tools with new device names. 490 491 It is possible to load devices ahci, ata, siis and mvs as modules, 492 but option ATA_CAM should remain in kernel configuration to make ata 493 module work as CAM driver supporting legacy ATA controllers. Device ata 494 still can be used in modular fashion (atacore + ...). Modules atadisk 495 and atapi* are not used and won't affect operation in ATA_CAM mode. 496 Note that to use CAM-based ATA kernel should include CAM devices 497 scbus, pass, da (or explicitly ada), cd and optionally others. All of 498 them are parts of the cam module. 499 500 ataraid(4) functionality is now supported by the RAID GEOM class. 501 To use it you can load geom_raid kernel module and use graid(8) tool 502 for management. Instead of /dev/arX device names, use /dev/raid/rX. 503 504 No kernel config options or code have been removed, so if a problem 505 arises, please report it and optionally revert to the old ATA stack. 506 In order to do it you can remove from the kernel config: 507 options ATA_CAM 508 device ahci 509 device mvs 510 device siis 511 , and instead add back: 512 device atadisk # ATA disk drives 513 device ataraid # ATA RAID drives 514 device atapicd # ATAPI CDROM drives 515 device atapifd # ATAPI floppy drives 516 device atapist # ATAPI tape drives 517 51820110423: 519 The default NFS server has been changed to the new server, which 520 was referred to as the experimental server. If you need to switch 521 back to the old NFS server, you must now put the "-o" option on 522 both the mountd and nfsd commands. This can be done using the 523 mountd_flags and nfs_server_flags rc.conf variables until an 524 update to the rc scripts is committed, which is coming soon. 525 52620110418: 527 The GNU Objective-C runtime library (libobjc), and other Objective-C 528 related components have been removed from the base system. If you 529 require an Objective-C library, please use one of the available ports. 530 53120110331: 532 ath(4) has been split into bus- and device- modules. if_ath contains 533 the HAL, the TX rate control and the network device code. if_ath_pci 534 contains the PCI bus glue. For Atheros MIPS embedded systems, if_ath_ahb 535 contains the AHB glue. Users need to load both if_ath_pci and if_ath 536 in order to use ath on everything else. 537 538 TO REPEAT: if_ath_ahb is not needed for normal users. Normal users only 539 need to load if_ath and if_ath_pci for ath(4) operation. 540 54120110314: 542 As part of the replacement of sysinstall, the process of building 543 release media has changed significantly. For details, please re-read 544 release(7), which has been updated to reflect the new build process. 545 54620110218: 547 GNU binutils 2.17.50 (as of 2007-07-03) has been merged to -HEAD. This 548 is the last available version under GPLv2. It brings a number of new 549 features, such as support for newer x86 CPU's (with SSE-3, SSSE-3, SSE 550 4.1 and SSE 4.2), better support for powerpc64, a number of new 551 directives, and lots of other small improvements. See the ChangeLog 552 file in contrib/binutils for the full details. 553 55420110218: 555 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868 556 compliant, and will now use half of hash for authentication. 557 This will break interoperability with all stacks (including all 558 actual FreeBSD versions) who implement 559 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for 560 authentication). 561 The only workaround with such peers is to use another HMAC 562 algorithm for IPsec ("phase 2") authentication. 563 56420110207: 565 Remove the uio_yield prototype and symbol. This function has 566 been misnamed since it was introduced and should not be 567 globally exposed with this name. The equivalent functionality 568 is now available using kern_yield(curthread->td_user_pri). 569 The function remains undocumented. 570 57120110112: 572 A SYSCTL_[ADD_]UQUAD was added for unsigned uint64_t pointers, 573 symmetric with the existing SYSCTL_[ADD_]QUAD. Type checking 574 for scalar sysctls is defined but disabled. Code that needs 575 UQUAD to pass the type checking that must compile on older 576 systems where the define is not present can check against 577 __FreeBSD_version >= 900030. 578 579 The system dialog(1) has been replaced with a new version previously 580 in ports as devel/cdialog. dialog(1) is mostly command-line compatible 581 with the previous version, but the libdialog associated with it has 582 a largely incompatible API. As such, the original version of libdialog 583 will be kept temporarily as libodialog, until its base system consumers 584 are replaced or updated. Bump __FreeBSD_version to 900030. 585 58620110103: 587 If you are trying to run make universe on a -stable system, and you get 588 the following warning: 589 "Makefile", line 356: "Target architecture for i386/conf/GENERIC 590 unknown. config(8) likely too old." 591 or something similar to it, then you must upgrade your -stable system 592 to 8.2-Release or newer (really, any time after r210146 7/15/2010 in 593 stable/8) or build the config from the latest stable/8 branch and 594 install it on your system. 595 596 Prior to this date, building a current universe on 8-stable system from 597 between 7/15/2010 and 1/2/2011 would result in a weird shell parsing 598 error in the first kernel build phase. A new config on those old 599 systems will fix that problem for older versions of -current. 600 60120101228: 602 The TCP stack has been modified to allow Khelp modules to interact with 603 it via helper hook points and store per-connection data in the TCP 604 control block. Bump __FreeBSD_version to 900029. User space tools that 605 rely on the size of struct tcpcb in tcp_var.h (e.g. sockstat) need to 606 be recompiled. 607 60820101114: 609 Generic IEEE 802.3 annex 31B full duplex flow control support has been 610 added to mii(4) and bge(4), bce(4), msk(4), nfe(4) and stge(4) along 611 with brgphy(4), e1000phy(4) as well as ip1000phy() have been converted 612 to take advantage of it instead of using custom implementations. This 613 means that these drivers now no longer unconditionally advertise 614 support for flow control but only do so if flow control is a selected 615 media option. This was implemented in the generic support that way in 616 order to allow flow control to be switched on and off via ifconfig(8) 617 with the PHY specific default to typically off in order to protect 618 from unwanted effects. Consequently, if you used flow control with 619 one of the above mentioned drivers you now need to explicitly enable 620 it, for example via: 621 ifconfig bge0 media auto mediaopt flowcontrol 622 623 Along with the above mentioned changes generic support for setting 624 1000baseT master mode also has been added and brgphy(4), ciphy(4), 625 e1000phy(4) as well as ip1000phy(4) have been converted to take 626 advantage of it. This means that these drivers now no longer take the 627 link0 parameter for selecting master mode but the master media option 628 has to be used instead, for example like in the following: 629 ifconfig bge0 media 1000baseT mediaopt full-duplex,master 630 631 Selection of master mode now is also available with all other PHY 632 drivers supporting 1000baseT. 633 63420101111: 635 The TCP stack has received a significant update to add support for 636 modularised congestion control and generally improve the clarity of 637 congestion control decisions. Bump __FreeBSD_version to 900025. User 638 space tools that rely on the size of struct tcpcb in tcp_var.h (e.g. 639 sockstat) need to be recompiled. 640 64120101002: 642 The man(1) utility has been replaced by a new version that no longer 643 uses /etc/manpath.config. Please consult man.conf(5) for how to 644 migrate local entries to the new format. 645 64620100928: 647 The copyright strings printed by login(1) and sshd(8) at the time of a 648 new connection have been removed to follow other operating systems and 649 upstream sshd. 650 65120100915: 652 A workaround for a fixed ld bug has been removed in kernel code, 653 so make sure that your system ld is built from sources after 654 revision 210245 from 2010-07-19 (r211583 if building head kernel 655 on stable/8, r211584 for stable/7; both from 2010-08-21). 656 A symptom of incorrect ld version is different addresses for 657 set_pcpu section and __start_set_pcpu symbol in kernel and/or modules. 658 65920100913: 660 The $ipv6_prefer variable in rc.conf(5) has been split into 661 $ip6addrctl_policy and $ipv6_activate_all_interfaces. 662 663 The $ip6addrctl_policy is a variable to choose a pre-defined 664 address selection policy set by ip6addrctl(8). A value 665 "ipv4_prefer", "ipv6_prefer" or "AUTO" can be specified. The 666 default is "AUTO". 667 668 The $ipv6_activate_all_interfaces specifies whether IFDISABLED 669 flag (see an entry of 20090926) is set on an interface with no 670 corresponding $ifconfig_IF_ipv6 line. The default is "NO" for 671 security reason. If you want IPv6 link-local address on all 672 interfaces by default, set this to "YES". 673 674 The old ipv6_prefer="YES" is equivalent to 675 ipv6_activate_all_interfaces="YES" and 676 ip6addrctl_policy="ipv6_prefer". 677 67820100913: 679 DTrace has grown support for userland tracing. Due to this, DTrace is 680 now i386 and amd64 only. 681 dtruss(1) is now installed by default on those systems and a new 682 kernel module is needed for userland tracing: fasttrap. 683 No changes to your kernel config file are necessary to enable 684 userland tracing, but you might consider adding 'STRIP=' and 685 'CFLAGS+=-fno-omit-frame-pointer' to your make.conf if you want 686 to have informative userland stack traces in DTrace (ustack). 687 68820100725: 689 The acpi_aiboost(4) driver has been removed in favor of the new 690 aibs(4) driver. You should update your kernel configuration file. 691 69220100722: 693 BSD grep has been imported to the base system and it is built by 694 default. It is completely BSD licensed, highly GNU-compatible, uses 695 less memory than its GNU counterpart and has a small codebase. 696 However, it is slower than its GNU counterpart, which is mostly 697 noticeable for larger searches, for smaller ones it is measurable 698 but not significant. The reason is complex, the most important factor 699 is that we lack a modern and efficient regex library and GNU 700 overcomes this by optimizing the searches internally. Future work 701 on improving the regex performance is planned, for the meantime, 702 users that need better performance, can build GNU grep instead by 703 setting the WITH_GNU_GREP knob. 704 70520100713: 706 Due to the import of powerpc64 support, all existing powerpc kernel 707 configuration files must be updated with a machine directive like this: 708 machine powerpc powerpc 709 710 In addition, an updated config(8) is required to build powerpc kernels 711 after this change. 712 71320100713: 714 A new version of ZFS (version 15) has been merged to -HEAD. 715 This version uses a python library for the following subcommands: 716 zfs allow, zfs unallow, zfs groupspace, zfs userspace. 717 For full functionality of these commands the following port must 718 be installed: sysutils/py-zfs 719 72020100429: 721 'vm_page's are now hashed by physical address to an array of mutexes. 722 Currently this is only used to serialize access to hold_count. Over 723 time the page queue mutex will be peeled away. This changes the size 724 of pmap on every architecture. And requires all callers of vm_page_hold 725 and vm_page_unhold to be updated. 726 72720100402: 728 WITH_CTF can now be specified in src.conf (not recommended, there 729 are some problems with static executables), make.conf (would also 730 affect ports which do not use GNU make and do not override the 731 compile targets) or in the kernel config (via "makeoptions 732 WITH_CTF=yes"). 733 When WITH_CTF was specified there before this was silently ignored, 734 so make sure that WITH_CTF is not used in places which could lead 735 to unwanted behavior. 736 73720100311: 738 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32 739 to allow 32-bit compatibility on non-x86 platforms. All kernel 740 configurations on amd64 and ia64 platforms using these options must 741 be modified accordingly. 742 74320100113: 744 The utmp user accounting database has been replaced with utmpx, 745 the user accounting interface standardized by POSIX. 746 Unfortunately the semantics of utmp and utmpx don't match, 747 making it practically impossible to support both interfaces. 748 The user accounting database is used by tools like finger(1), 749 last(1), talk(1), w(1) and ac(8). 750 751 All applications in the base system use utmpx. This means only 752 local binaries (e.g. from the ports tree) may still use these 753 utmp database files. These applications must be rebuilt to make 754 use of utmpx. 755 756 After the system has been upgraded, it is safe to remove the old 757 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*), 758 assuming their contents is of no importance anymore. Old wtmp 759 databases can only be used by last(1) and ac(8) after they have 760 been converted to the new format using wtmpcvt(1). 761 76220100108: 763 Introduce the kernel thread "deadlock resolver" (which can be enabled 764 via the DEADLKRES option, see NOTES for more details) and the 765 sleepq_type() function for sleepqueues. 766 76720091202: 768 The rc.firewall and rc.firewall6 were unified, and 769 rc.firewall6 and rc.d/ip6fw were removed. 770 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc 771 variables are obsoleted. Instead, the following new rc 772 variables are added to rc.d/ipfw: 773 774 firewall_client_net_ipv6, firewall_simple_iif_ipv6, 775 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6, 776 firewall_simple_onet_ipv6, firewall_trusted_ipv6 777 778 The meanings correspond to the relevant IPv4 variables. 779 78020091125: 781 8.0-RELEASE. 782 78320091113: 784 The default terminal emulation for syscons(4) has been changed 785 from cons25 to xterm on all platforms except pc98. This means 786 that the /etc/ttys file needs to be updated to ensure correct 787 operation of applications on the console. 788 789 The terminal emulation style can be toggled per window by using 790 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration 791 options can be used to change the compile-time default back to 792 cons25. 793 794 To prevent graphical artifacts, make sure the TERM environment 795 variable is set to match the terminal emulation that is being 796 performed by syscons(4). 797 79820091109: 799 The layout of the structure ieee80211req_scan_result has changed. 800 Applications that require wireless scan results (e.g. ifconfig(8)) 801 from net80211 need to be recompiled. 802 803 Applications such as wpa_supplicant(8) may require a full world 804 build without using NO_CLEAN in order to get synchronized with the 805 new structure. 806 80720091025: 808 The iwn(4) driver has been updated to support the 5000 and 5150 series. 809 There's one kernel module for each firmware. Adding "device iwnfw" 810 to the kernel configuration file means including all three firmware 811 images inside the kernel. If you want to include just the one for 812 your wireless card, use the devices iwn4965fw, iwn5000fw or 813 iwn5150fw. 814 81520090926: 816 The rc.d/network_ipv6, IPv6 configuration script has been integrated 817 into rc.d/netif. The changes are the following: 818 819 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF 820 for IPv4. For aliases, $ifconfig_IF_aliasN should be used. 821 Note that both variables need the "inet6" keyword at the head. 822 823 Do not set $ipv6_network_interfaces manually if you do not 824 understand what you are doing. It is not needed in most cases. 825 826 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but 827 they are obsolete. 828 829 2. $ipv6_enable is obsolete. Use $ipv6_prefer and 830 "inet6 accept_rtadv" keyword in ifconfig(8) instead. 831 832 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and 833 all configured interfaces have "inet6 accept_rtadv" in the 834 $ifconfig_IF_ipv6. These are for backward compatibility. 835 836 3. A new variable $ipv6_prefer has been added. If NO, IPv6 837 functionality of interfaces with no corresponding 838 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag, 839 and the default address selection policy of ip6addrctl(8) 840 is the IPv4-preferred one (see rc.d/ip6addrctl for more details). 841 Note that if you want to configure IPv6 functionality on the 842 disabled interfaces after boot, first you need to clear the flag by 843 using ifconfig(8) like: 844 845 ifconfig em0 inet6 -ifdisabled 846 847 If YES, the default address selection policy is set as 848 IPv6-preferred. 849 850 The default value of $ipv6_prefer is NO. 851 852 4. If your system need to receive Router Advertisement messages, 853 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8) 854 scripts automatically invoke rtsol(8) when the interface becomes 855 UP. The Router Advertisement messages are used for SLAAC 856 (State-Less Address AutoConfiguration). 857 85820090922: 859 802.11s D3.03 support was committed. This is incompatible with the 860 previous code, which was based on D3.0. 861 86220090912: 863 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value 864 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to 865 control whether accepting Router Advertisement messages or not. 866 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and 867 a sysctl variable net.inet6.ip6.auto_linklocal is its default value. 868 The ifconfig(8) utility now supports these flags. 869 87020090910: 871 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for 872 mount(8) and -a option for df(1) to see them. 873 87420090825: 875 The old tunable hw.bus.devctl_disable has been superseded by 876 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be 877 replaced by hw.bus.devctl_queue=0. The default for this new tunable 878 is 1000. 879 88020090813: 881 Remove the option STOP_NMI. The default action is now to use NMI only 882 for KDB via the newly introduced function stop_cpus_hard() and 883 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64. 884 88520090803: 886 The stable/8 branch created in subversion. This corresponds to the 887 RELENG_8 branch in CVS. 888 88920090719: 890 Bump the shared library version numbers for all libraries that do not 891 use symbol versioning as part of the 8.0-RELEASE cycle. Bump 892 __FreeBSD_version to 800105. 893 89420090714: 895 Due to changes in the implementation of virtual network stack support, 896 all network-related kernel modules must be recompiled. As this change 897 breaks the ABI, bump __FreeBSD_version to 800104. 898 89920090713: 900 The TOE interface to the TCP syncache has been modified to remove 901 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. 902 The cxgb driver is the only TOE consumer affected by this change, and 903 needs to be recompiled along with the kernel. As this change breaks 904 the ABI, bump __FreeBSD_version to 800103. 905 90620090712: 907 Padding has been added to struct tcpcb, sackhint and tcpstat in 908 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst 909 maintaining the ABI. However, this change breaks the ABI, so bump 910 __FreeBSD_version to 800102. User space tools that rely on the size of 911 any of these structs (e.g. sockstat) need to be recompiled. 912 91320090630: 914 The NFS_LEGACYRPC option has been removed along with the old kernel 915 RPC implementation that this option selected. Kernel configurations 916 may need to be adjusted. 917 91820090629: 919 The network interface device nodes at /dev/net/<interface> have been 920 removed. All ioctl operations can be performed the normal way using 921 routing sockets. The kqueue functionality can generally be replaced 922 with routing sockets. 923 92420090628: 925 The documentation from the FreeBSD Documentation Project (Handbook, 926 FAQ, etc.) is now installed via packages by sysinstall(8) and under 927 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc. 928 92920090624: 930 The ABI of various structures related to the SYSV IPC API have been 931 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel 932 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to 933 800100. 934 93520090622: 936 Layout of struct vnet has changed as routing related variables were 937 moved to their own Vimage module. Modules need to be recompiled. Bump 938 __FreeBSD_version to 800099. 939 94020090619: 941 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024 942 respectively. As long as no more than 16 groups per process are used, 943 no changes should be visible. When more than 16 groups are used, old 944 binaries may fail if they call getgroups() or getgrouplist() with 945 statically sized storage. Recompiling will work around this, but 946 applications should be modified to use dynamically allocated storage 947 for group arrays as POSIX.1-2008 does not cap an implementation's 948 number of supported groups at NGROUPS_MAX+1 as previous versions did. 949 950 NFS and portalfs mounts may also be affected as the list of groups is 951 truncated to 16. Users of NFS who use more than 16 groups, should 952 take care that negative group permissions are not used on the exported 953 file systems as they will not be reliable unless a GSSAPI based 954 authentication method is used. 955 95620090616: 957 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This 958 option compiles in the support for adaptive spinning for lockmgrs 959 which want to enable it. The lockinit() function now accepts the flag 960 LK_ADAPTIVE in order to make the lock object subject to adaptive 961 spinning when both held in write and read mode. 962 96320090613: 964 The layout of the structure returned by IEEE80211_IOC_STA_INFO has 965 changed. User applications that use this ioctl need to be rebuilt. 966 96720090611: 968 The layout of struct thread has changed. Kernel and modules need to 969 be rebuilt. 970 97120090608: 972 The layout of structs ifnet, domain, protosw and vnet_net has changed. 973 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097. 974 97520090602: 976 window(1) has been removed from the base system. It can now be 977 installed from ports. The port is called misc/window. 978 97920090601: 980 The way we are storing and accessing `routing table' entries has 981 changed. Programs reading the FIB, like netstat, need to be 982 re-compiled. 983 98420090601: 985 A new netisr implementation has been added for FreeBSD 8. Network 986 file system modules, such as igmp, ipdivert, and others, should be 987 rebuilt. 988 Bump __FreeBSD_version to 800096. 989 99020090530: 991 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no 992 more valid. 993 99420090530: 995 Add VOP_ACCESSX(9). File system modules need to be rebuilt. 996 Bump __FreeBSD_version to 800094. 997 99820090529: 999 Add mnt_xflag field to 'struct mount'. File system modules need to be 1000 rebuilt. 1001 Bump __FreeBSD_version to 800093. 1002 100320090528: 1004 The compiling option ADAPTIVE_SX has been retired while it has been 1005 introduced the option NO_ADAPTIVE_SX which handles the reversed logic. 1006 The KPI for sx_init_flags() changes as accepting flags: 1007 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has 1008 been introduced in order to handle the reversed logic. 1009 Bump __FreeBSD_version to 800092. 1010 101120090527: 1012 Add support for hierarchical jails. Remove global securelevel. 1013 Bump __FreeBSD_version to 800091. 1014 101520090523: 1016 The layout of struct vnet_net has changed, therefore modules 1017 need to be rebuilt. 1018 Bump __FreeBSD_version to 800090. 1019 102020090523: 1021 The newly imported zic(8) produces a new format in the output. Please 1022 run tzsetup(8) to install the newly created data to /etc/localtime. 1023 102420090520: 1025 The sysctl tree for the usb stack has renamed from hw.usb2.* to 1026 hw.usb.* and is now consistent again with previous releases. 1027 102820090520: 1029 802.11 monitor mode support was revised and driver api's were changed. 1030 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead 1031 of DLT_IEEE802_11. No user-visible data structures were changed but 1032 applications that use DLT_IEEE802_11 may require changes. 1033 Bump __FreeBSD_version to 800088. 1034 103520090430: 1036 The layout of the following structs has changed: sysctl_oid, 1037 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet, 1038 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or 1039 panics may be experienced. World rebuild is required for 1040 correctly checking networking state from userland. 1041 Bump __FreeBSD_version to 800085. 1042 104320090429: 1044 MLDv2 and Source-Specific Multicast (SSM) have been merged 1045 to the IPv6 stack. VIMAGE hooks are in but not yet used. 1046 The implementation of SSM within FreeBSD's IPv6 stack closely 1047 follows the IPv4 implementation. 1048 1049 For kernel developers: 1050 1051 * The most important changes are that the ip6_output() and 1052 ip6_input() paths no longer take the IN6_MULTI_LOCK, 1053 and this lock has been downgraded to a non-recursive mutex. 1054 1055 * As with the changes to the IPv4 stack to support SSM, filtering 1056 of inbound multicast traffic must now be performed by transport 1057 protocols within the IPv6 stack. This does not apply to TCP and 1058 SCTP, however, it does apply to UDP in IPv6 and raw IPv6. 1059 1060 * The KPIs used by IPv6 multicast are similar to those used by 1061 the IPv4 stack, with the following differences: 1062 * im6o_mc_filter() is analogous to imo_multicast_filter(). 1063 * The legacy KAME entry points in6_joingroup and in6_leavegroup() 1064 are shimmed to in6_mc_join() and in6_mc_leave() respectively. 1065 * IN6_LOOKUP_MULTI() has been deprecated and removed. 1066 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs 1067 for MLDv1 have an additional 'timer' argument which is used to 1068 jitter the initial membership report for the solicited-node 1069 multicast membership on-link. 1070 * This is not strictly needed for MLDv2, which already jitters 1071 its report transmissions. However, the 'timer' argument is 1072 preserved in case MLDv1 is active on the interface. 1073 1074 * The KAME linked-list based IPv6 membership implementation has 1075 been refactored to use a vector similar to that used by the IPv4 1076 stack. 1077 Code which maintains a list of its own multicast memberships 1078 internally, e.g. carp, has been updated to reflect the new 1079 semantics. 1080 1081 * There is a known Lock Order Reversal (LOR) due to in6_setscope() 1082 acquiring the IF_AFDATA_LOCK and being called within ip6_output(). 1083 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an 1084 implementation constraint which needs to be addressed in HEAD. 1085 1086 For application developers: 1087 1088 * The changes are broadly similar to those made for the IPv4 1089 stack. 1090 1091 * The use of IPv4 and IPv6 multicast socket options on the same 1092 socket, using mapped addresses, HAS NOT been tested or supported. 1093 1094 * There are a number of issues with the implementation of various 1095 IPv6 multicast APIs which need to be resolved in the API surface 1096 before the implementation is fully compatible with KAME userland 1097 use, and these are mostly to do with interface index treatment. 1098 1099 * The literature available discusses the use of either the delta / ASM 1100 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API 1101 using setsourcefilter(3)/getsourcefilter(3). For more information 1102 please refer to RFC 3768, 'Socket Interface Extensions for 1103 Multicast Source Filters'. 1104 1105 * Applications which use the published RFC 3678 APIs should be fine. 1106 1107 For systems administrators: 1108 1109 * The mtest(8) utility has been refactored to support IPv6, in 1110 addition to IPv4. Interface addresses are no longer accepted 1111 as arguments, their names must be used instead. The utility 1112 will map the interface name to its first IPv4 address as 1113 returned by getifaddrs(3). 1114 1115 * The ifmcstat(8) utility has also been updated to print the MLDv2 1116 endpoint state and source filter lists via sysctl(3). 1117 1118 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable 1119 loopback of IPv6 multicast datagrams by default; it defaults to 1 1120 to preserve the existing behaviour. Disabling multicast loopback is 1121 recommended for optimal system performance. 1122 1123 * The IPv6 MROUTING code has been changed to examine this sysctl 1124 instead of attempting to perform a group lookup before looping 1125 back forwarded datagrams. 1126 1127 Bump __FreeBSD_version to 800084. 1128 112920090422: 1130 Implement low-level Bluetooth HCI API. 1131 Bump __FreeBSD_version to 800083. 1132 113320090419: 1134 The layout of struct malloc_type, used by modules to register new 1135 memory allocation types, has changed. Most modules will need to 1136 be rebuilt or panics may be experienced. 1137 Bump __FreeBSD_version to 800081. 1138 113920090415: 1140 Anticipate overflowing inp_flags - add inp_flags2. 1141 This changes most offsets in inpcb, so checking v4 connection 1142 state will require a world rebuild. 1143 Bump __FreeBSD_version to 800080. 1144 114520090415: 1146 Add an llentry to struct route and struct route_in6. Modules 1147 embedding a struct route will need to be recompiled. 1148 Bump __FreeBSD_version to 800079. 1149 115020090414: 1151 The size of rt_metrics_lite and by extension rtentry has changed. 1152 Networking administration apps will need to be recompiled. 1153 The route command now supports show as an alias for get, weighting 1154 of routes, sticky and nostick flags to alter the behavior of stateful 1155 load balancing. 1156 Bump __FreeBSD_version to 800078. 1157 115820090408: 1159 Do not use Giant for kbdmux(4) locking. This is wrong and 1160 apparently causing more problems than it solves. This will 1161 re-open the issue where interrupt handlers may race with 1162 kbdmux(4) in polling mode. Typical symptoms include (but 1163 not limited to) duplicated and/or missing characters when 1164 low level console functions (such as gets) are used while 1165 interrupts are enabled (for example geli password prompt, 1166 mountroot prompt etc.). Disabling kbdmux(4) may help. 1167 116820090407: 1169 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed; 1170 kernel modules referencing any of the above need to be recompiled. 1171 Bump __FreeBSD_version to 800075. 1172 117320090320: 1174 GEOM_PART has become the default partition slicer for storage devices, 1175 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It 1176 introduces some changes: 1177 1178 MSDOS/EBR: the devices created from MSDOS extended partition entries 1179 (EBR) can be named differently than with GEOM_MBR and are now symlinks 1180 to devices with offset-based names. fstabs may need to be modified. 1181 1182 BSD: the "geometry does not match label" warning is harmless in most 1183 cases but it points to problems in file system misalignment with 1184 disk geometry. The "c" partition is now implicit, covers the whole 1185 top-level drive and cannot be (mis)used by users. 1186 1187 General: Kernel dumps are now not allowed to be written to devices 1188 whose partition types indicate they are meant to be used for file 1189 systems (or, in case of MSDOS partitions, as something else than 1190 the "386BSD" type). 1191 1192 Most of these changes date approximately from 200812. 1193 119420090319: 1195 The uscanner(4) driver has been removed from the kernel. This follows 1196 Linux removing theirs in 2.6 and making libusb the default interface 1197 (supported by sane). 1198 119920090319: 1200 The multicast forwarding code has been cleaned up. netstat(1) 1201 only relies on KVM now for printing bandwidth upcall meters. 1202 The IPv4 and IPv6 modules are split into ip_mroute_mod and 1203 ip6_mroute_mod respectively. The config(5) options for statically 1204 compiling this code remain the same, i.e. 'options MROUTING'. 1205 120620090315: 1207 Support for the IFF_NEEDSGIANT network interface flag has been 1208 removed, which means that non-MPSAFE network device drivers are no 1209 longer supported. In particular, if_ar, if_sr, and network device 1210 drivers from the old (legacy) USB stack can no longer be built or 1211 used. 1212 121320090313: 1214 POSIX.1 Native Language Support (NLS) has been enabled in libc and 1215 a bunch of new language catalog files have also been added. 1216 This means that some common libc messages are now localized and 1217 they depend on the LC_MESSAGES environmental variable. 1218 121920090313: 1220 The k8temp(4) driver has been renamed to amdtemp(4) since 1221 support for Family 10 and Family 11 CPU families was added. 1222 122320090309: 1224 IGMPv3 and Source-Specific Multicast (SSM) have been merged 1225 to the IPv4 stack. VIMAGE hooks are in but not yet used. 1226 1227 For kernel developers, the most important changes are that the 1228 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(), 1229 and this lock has been downgraded to a non-recursive mutex. 1230 1231 Transport protocols (UDP, Raw IP) are now responsible for filtering 1232 inbound multicast traffic according to group membership and source 1233 filters. The imo_multicast_filter() KPI exists for this purpose. 1234 Transports which do not use multicast (SCTP, TCP) already reject 1235 multicast by default. Forwarding and receive performance may improve 1236 as a mutex acquisition is no longer needed in the ip_input() 1237 low-level input path. in_addmulti() and in_delmulti() are shimmed 1238 to new KPIs which exist to support SSM in-kernel. 1239 1240 For application developers, it is recommended that loopback of 1241 multicast datagrams be disabled for best performance, as this 1242 will still cause the lock to be taken for each looped-back 1243 datagram transmission. The net.inet.ip.mcast.loop sysctl may 1244 be tuned to 0 to disable loopback by default; it defaults to 1 1245 to preserve the existing behaviour. 1246 1247 For systems administrators, to obtain best performance with 1248 multicast reception and multiple groups, it is always recommended 1249 that a card with a suitably precise hash filter is used. Hash 1250 collisions will still result in the lock being taken within the 1251 transport protocol input path to check group membership. 1252 1253 If deploying FreeBSD in an environment with IGMP snooping switches, 1254 it is recommended that the net.inet.igmp.sendlocal sysctl remain 1255 enabled; this forces 224.0.0.0/24 group membership to be announced 1256 via IGMP. 1257 1258 The size of 'struct igmpstat' has changed; netstat needs to be 1259 recompiled to reflect this. 1260 Bump __FreeBSD_version to 800070. 1261 126220090309: 1263 libusb20.so.1 is now installed as libusb.so.1 and the ports system 1264 updated to use it. This requires a buildworld/installworld in order to 1265 update the library and dependencies (usbconfig, etc). Its advisable to 1266 rebuild all ports which uses libusb. More specific directions are given 1267 in the ports collection UPDATING file. Any /etc/libmap.conf entries for 1268 libusb are no longer required and can be removed. 1269 127020090302: 1271 A workaround is committed to allow the creation of System V shared 1272 memory segment of size > 2 GB on the 64-bit architectures. 1273 Due to a limitation of the existing ABI, the shm_segsz member 1274 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is 1275 wrong for large segments. Note that limits must be explicitly 1276 raised to allow such segments to be created. 1277 127820090301: 1279 The layout of struct ifnet has changed, requiring a rebuild of all 1280 network device driver modules. 1281 128220090227: 1283 The /dev handling for the new USB stack has changed, a 1284 buildworld/installworld is required for libusb20. 1285 128620090223: 1287 The new USB2 stack has now been permanently moved in and all kernel and 1288 module names reverted to their previous values (eg, usb, ehci, ohci, 1289 ums, ...). The old usb stack can be compiled in by prefixing the name 1290 with the letter 'o', the old usb modules have been removed. 1291 Updating entry 20090216 for xorg and 20090215 for libmap may still 1292 apply. 1293 129420090217: 1295 The rc.conf(5) option if_up_delay has been renamed to 1296 defaultroute_delay to better reflect its purpose. If you have 1297 customized this setting in /etc/rc.conf you need to update it to 1298 use the new name. 1299 130020090216: 1301 xorg 7.4 wants to configure its input devices via hald which does not 1302 yet work with USB2. If the keyboard/mouse does not work in xorg then 1303 add 1304 Option "AllowEmptyInput" "off" 1305 to your ServerLayout section. This will cause X to use the configured 1306 kbd and mouse sections from your xorg.conf. 1307 130820090215: 1309 The GENERIC kernels for all architectures now default to the new USB2 1310 stack. No kernel config options or code have been removed so if a 1311 problem arises please report it and optionally revert to the old USB 1312 stack. If you are loading USB kernel modules or have a custom kernel 1313 that includes GENERIC then ensure that usb names are also changed over, 1314 eg uftdi -> usb2_serial_ftdi. 1315 1316 Older programs linked against the ports libusb 0.1 need to be 1317 redirected to the new stack's libusb20. /etc/libmap.conf can 1318 be used for this: 1319 # Map old usb library to new one for usb2 stack 1320 libusb-0.1.so.8 libusb20.so.1 1321 132220090209: 1323 All USB ethernet devices now attach as interfaces under the name ueN 1324 (eg. ue0). This is to provide a predictable name as vendors often 1325 change usb chipsets in a product without notice. 1326 132720090203: 1328 The ichsmb(4) driver has been changed to require SMBus slave 1329 addresses be left-justified (xxxxxxx0b) rather than right-justified. 1330 All of the other SMBus controller drivers require left-justified 1331 slave addresses, so this change makes all the drivers provide the 1332 same interface. 1333 133420090201: 1335 INET6 statistics (struct ip6stat) was updated. 1336 netstat(1) needs to be recompiled. 1337 133820090119: 1339 NTFS has been removed from GENERIC kernel on amd64 to match 1340 GENERIC on i386. Should not cause any issues since mount_ntfs(8) 1341 will load ntfs.ko module automatically when NTFS support is 1342 actually needed, unless ntfs.ko is not installed or security 1343 level prohibits loading kernel modules. If either is the case, 1344 "options NTFS" has to be added into kernel config. 1345 134620090115: 1347 TCP Appropriate Byte Counting (RFC 3465) support added to kernel. 1348 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to 1349 800061. User space tools that rely on the size of struct tcpcb in 1350 tcp_var.h (e.g. sockstat) need to be recompiled. 1351 135220081225: 1353 ng_tty(4) module updated to match the new TTY subsystem. 1354 Due to API change, user-level applications must be updated. 1355 New API support added to mpd5 CVS and expected to be present 1356 in next mpd5.3 release. 1357 135820081219: 1359 With __FreeBSD_version 800060 the makefs tool is part of 1360 the base system (it was a port). 1361 136220081216: 1363 The afdata and ifnet locks have been changed from mutexes to 1364 rwlocks, network modules will need to be re-compiled. 1365 136620081214: 1367 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite. 1368 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated. 1369 The new code reduced struct rtentry{} by 16 bytes on 32-bit 1370 architecture and 40 bytes on 64-bit architecture. The userland 1371 applications "arp" and "ndp" have been updated accordingly. 1372 The output from "netstat -r" shows only routing entries and 1373 none of the L2 information. 1374 137520081130: 1376 __FreeBSD_version 800057 marks the switchover from the 1377 binary ath hal to source code. Users must add the line: 1378 1379 options AH_SUPPORT_AR5416 1380 1381 to their kernel config files when specifying: 1382 1383 device ath_hal 1384 1385 The ath_hal module no longer exists; the code is now compiled 1386 together with the driver in the ath module. It is now 1387 possible to tailor chip support (i.e. reduce the set of chips 1388 and thereby the code size); consult ath_hal(4) for details. 1389 139020081121: 1391 __FreeBSD_version 800054 adds memory barriers to 1392 <machine/atomic.h>, new interfaces to ifnet to facilitate 1393 multiple hardware transmit queues for cards that support 1394 them, and a lock-less ring-buffer implementation to 1395 enable drivers to more efficiently manage queueing of 1396 packets. 1397 139820081117: 1399 A new version of ZFS (version 13) has been merged to -HEAD. 1400 This version has zpool attribute "listsnapshots" off by 1401 default, which means "zfs list" does not show snapshots, 1402 and is the same as Solaris behavior. 1403 140420081028: 1405 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled. 1406 140720081009: 1408 The uhci, ohci, ehci and slhci USB Host controller drivers have 1409 been put into separate modules. If you load the usb module 1410 separately through loader.conf you will need to load the 1411 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0 1412 controller add the following to loader.conf: 1413 1414 uhci_load="YES" 1415 ehci_load="YES" 1416 141720081009: 1418 The ABI used by the PMC toolset has changed. Please keep 1419 userland (libpmc(3)) and the kernel module (hwpmc(4)) in 1420 sync. 1421 142220081009: 1423 atapci kernel module now includes only generic PCI ATA 1424 driver. AHCI driver moved to ataahci kernel module. 1425 All vendor-specific code moved into separate kernel modules: 1426 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek, 1427 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron, 1428 atamarvell, atamicron, atanational, atanetcell, atanvidia, 1429 atapromise, ataserverworks, atasiliconimage, atasis, atavia 1430 143120080820: 1432 The TTY subsystem of the kernel has been replaced by a new 1433 implementation, which provides better scalability and an 1434 improved driver model. Most common drivers have been migrated to 1435 the new TTY subsystem, while others have not. The following 1436 drivers have not yet been ported to the new TTY layer: 1437 1438 PCI/ISA: 1439 cy, digi, rc, rp, sio 1440 1441 USB: 1442 ubser, ucycom 1443 1444 Line disciplines: 1445 ng_h4, ng_tty, ppp, sl, snp 1446 1447 Adding these drivers to your kernel configuration file shall 1448 cause compilation to fail. 1449 145020080818: 1451 ntpd has been upgraded to 4.2.4p5. 1452 145320080801: 1454 OpenSSH has been upgraded to 5.1p1. 1455 1456 For many years, FreeBSD's version of OpenSSH preferred DSA 1457 over RSA for host and user authentication keys. With this 1458 upgrade, we've switched to the vendor's default of RSA over 1459 DSA. This may cause upgraded clients to warn about unknown 1460 host keys even for previously known hosts. Users should 1461 follow the usual procedure for verifying host keys before 1462 accepting the RSA key. 1463 1464 This can be circumvented by setting the "HostKeyAlgorithms" 1465 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh 1466 command line. 1467 1468 Please note that the sequence of keys offered for 1469 authentication has been changed as well. You may want to 1470 specify IdentityFile in a different order to revert this 1471 behavior. 1472 147320080713: 1474 The sio(4) driver has been removed from the i386 and amd64 1475 kernel configuration files. This means uart(4) is now the 1476 default serial port driver on those platforms as well. 1477 1478 To prevent collisions with the sio(4) driver, the uart(4) driver 1479 uses different names for its device nodes. This means the 1480 onboard serial port will now most likely be called "ttyu0" 1481 instead of "ttyd0". You may need to reconfigure applications to 1482 use the new device names. 1483 1484 When using the serial port as a boot console, be sure to update 1485 /boot/device.hints and /etc/ttys before booting the new kernel. 1486 If you forget to do so, you can still manually specify the hints 1487 at the loader prompt: 1488 1489 set hint.uart.0.at="isa" 1490 set hint.uart.0.port="0x3F8" 1491 set hint.uart.0.flags="0x10" 1492 set hint.uart.0.irq="4" 1493 boot -s 1494 149520080609: 1496 The gpt(8) utility has been removed. Use gpart(8) to partition 1497 disks instead. 1498 149920080603: 1500 The version that Linuxulator emulates was changed from 2.4.2 1501 to 2.6.16. If you experience any problems with Linux binaries 1502 please try to set sysctl compat.linux.osrelease to 2.4.2 and 1503 if it fixes the problem contact emulation mailing list. 1504 150520080525: 1506 ISDN4BSD (I4B) was removed from the src tree. You may need to 1507 update a your kernel configuration and remove relevant entries. 1508 150920080509: 1510 I have checked in code to support multiple routing tables. 1511 See the man pages setfib(1) and setfib(2). 1512 This is a hopefully backwards compatible version, 1513 but to make use of it you need to compile your kernel 1514 with options ROUTETABLES=2 (or more up to 16). 1515 151620080420: 1517 The 802.11 wireless support was redone to enable multi-bss 1518 operation on devices that are capable. The underlying device 1519 is no longer used directly but instead wlanX devices are 1520 cloned with ifconfig. This requires changes to rc.conf files. 1521 For example, change: 1522 ifconfig_ath0="WPA DHCP" 1523 to 1524 wlans_ath0=wlan0 1525 ifconfig_wlan0="WPA DHCP" 1526 see rc.conf(5) for more details. In addition, mergemaster of 1527 /etc/rc.d is highly recommended. Simultaneous update of userland 1528 and kernel wouldn't hurt either. 1529 1530 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta 1531 modules were merged into the base wlan module. All references 1532 to these modules (e.g. in kernel config files) must be removed. 1533 153420080408: 1535 psm(4) has gained write(2) support in native operation level. 1536 Arbitrary commands can be written to /dev/psm%d and status can 1537 be read back from it. Therefore, an application is responsible 1538 for status validation and error recovery. It is a no-op in 1539 other operation levels. 1540 154120080312: 1542 Support for KSE threading has been removed from the kernel. To 1543 run legacy applications linked against KSE libmap.conf may 1544 be used. The following libmap.conf may be used to ensure 1545 compatibility with any prior release: 1546 1547 libpthread.so.1 libthr.so.1 1548 libpthread.so.2 libthr.so.2 1549 libkse.so.3 libthr.so.3 1550 155120080301: 1552 The layout of struct vmspace has changed. This affects libkvm 1553 and any executables that link against libkvm and use the 1554 kvm_getprocs() function. In particular, but not exclusively, 1555 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1). 1556 The effects are minimal, but it's advisable to upgrade world 1557 nonetheless. 1558 155920080229: 1560 The latest em driver no longer has support in it for the 1561 82575 adapter, this is now moved to the igb driver. The 1562 split was done to make new features that are incompatible 1563 with older hardware easier to do. 1564 156520080220: 1566 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4), 1567 likewise the kernel option is now GEOM_LINUX_LVM. 1568 156920080211: 1570 The default NFS mount mode has changed from UDP to TCP for 1571 increased reliability. If you rely on (insecurely) NFS 1572 mounting across a firewall you may need to update your 1573 firewall rules. 1574 157520080208: 1576 Belatedly note the addition of m_collapse for compacting 1577 mbuf chains. 1578 157920080126: 1580 The fts(3) structures have been changed to use adequate 1581 integer types for their members and so to be able to cope 1582 with huge file trees. The old fts(3) ABI is preserved 1583 through symbol versioning in libc, so third-party binaries 1584 using fts(3) should still work, although they will not take 1585 advantage of the extended types. At the same time, some 1586 third-party software might fail to build after this change 1587 due to unportable assumptions made in its source code about 1588 fts(3) structure members. Such software should be fixed 1589 by its vendor or, in the worst case, in the ports tree. 1590 FreeBSD_version 800015 marks this change for the unlikely 1591 case that a portable fix is impossible. 1592 159320080123: 1594 To upgrade to -current after this date, you must be running 1595 FreeBSD not older than 6.0-RELEASE. Upgrading to -current 1596 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems. 1597 159820071128: 1599 The ADAPTIVE_GIANT kernel option has been retired because its 1600 functionality is the default now. 1601 160220071118: 1603 The AT keyboard emulation of sunkbd(4) has been turned on 1604 by default. In order to make the special symbols of the Sun 1605 keyboards driven by sunkbd(4) work under X these now have 1606 to be configured the same way as Sun USB keyboards driven 1607 by ukbd(4) (which also does AT keyboard emulation), f.e.: 1608 1609 Option "XkbLayout" "us" 1610 Option "XkbRules" "xorg" 1611 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us" 1612 161320071024: 1614 It has been decided that it is desirable to provide ABI 1615 backwards compatibility to the FreeBSD 4/5/6 versions of the 1616 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was 1617 broken with the introduction of PCI domain support (see the 1618 20070930 entry). Unfortunately, this required the ABI of 1619 PCIOCGETCONF to be broken again in order to be able to 1620 provide backwards compatibility to the old version of that 1621 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled 1622 again. As for prominent ports this affects neither pciutils 1623 nor xorg-server this time, the hal port needs to be rebuilt 1624 however. 1625 162620071020: 1627 The misnamed kthread_create() and friends have been renamed 1628 to kproc_create() etc. Many of the callers already 1629 used kproc_start().. 1630 I will return kthread_create() and friends in a while 1631 with implementations that actually create threads, not procs. 1632 Renaming corresponds with version 800002. 1633 163420071010: 1635 RELENG_7 branched. 1636 1637COMMON ITEMS: 1638 1639 General Notes 1640 ------------- 1641 Avoid using make -j when upgrading. While generally safe, there are 1642 sometimes problems using -j to upgrade. If your upgrade fails with 1643 -j, please try again without -j. From time to time in the past there 1644 have been problems using -j with buildworld and/or installworld. This 1645 is especially true when upgrading between "distant" versions (eg one 1646 that cross a major release boundary or several minor releases, or when 1647 several months have passed on the -current branch). 1648 1649 Sometimes, obscure build problems are the result of environment 1650 poisoning. This can happen because the make utility reads its 1651 environment when searching for values for global variables. To run 1652 your build attempts in an "environmental clean room", prefix all make 1653 commands with 'env -i '. See the env(1) manual page for more details. 1654 1655 When upgrading from one major version to another it is generally best 1656 to upgrade to the latest code in the currently installed branch first, 1657 then do an upgrade to the new branch. This is the best-tested upgrade 1658 path, and has the highest probability of being successful. Please try 1659 this approach before reporting problems with a major version upgrade. 1660 1661 ZFS notes 1662 --------- 1663 When upgrading the boot ZFS pool to a new version, always follow 1664 these two steps: 1665 1666 1.) recompile and reinstall the ZFS boot loader and boot block 1667 (this is part of "make buildworld" and "make installworld") 1668 1669 2.) update the ZFS boot block on your boot drive 1670 1671 The following example updates the ZFS boot block on the first 1672 partition (freebsd-boot) of a GPT partitioned drive ad0: 1673 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0" 1674 1675 Non-boot pools do not need these updates. 1676 1677 To build a kernel 1678 ----------------- 1679 If you are updating from a prior version of FreeBSD (even one just 1680 a few days old), you should follow this procedure. It is the most 1681 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld, 1682 1683 make kernel-toolchain 1684 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE 1685 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE 1686 1687 To test a kernel once 1688 --------------------- 1689 If you just want to boot a kernel once (because you are not sure 1690 if it works, or if you want to boot a known bad kernel to provide 1691 debugging information) run 1692 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel 1693 nextboot -k testkernel 1694 1695 To just build a kernel when you know that it won't mess you up 1696 -------------------------------------------------------------- 1697 This assumes you are already running a CURRENT system. Replace 1698 ${arch} with the architecture of your machine (e.g. "i386", 1699 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc). 1700 1701 cd src/sys/${arch}/conf 1702 config KERNEL_NAME_HERE 1703 cd ../compile/KERNEL_NAME_HERE 1704 make depend 1705 make 1706 make install 1707 1708 If this fails, go to the "To build a kernel" section. 1709 1710 To rebuild everything and install it on the current system. 1711 ----------------------------------------------------------- 1712 # Note: sometimes if you are running current you gotta do more than 1713 # is listed here if you are upgrading from a really old current. 1714 1715 <make sure you have good level 0 dumps> 1716 make buildworld 1717 make kernel KERNCONF=YOUR_KERNEL_HERE 1718 [1] 1719 <reboot in single user> [3] 1720 mergemaster -p [5] 1721 make installworld 1722 mergemaster -i [4] 1723 make delete-old [6] 1724 <reboot> 1725 1726 1727 To cross-install current onto a separate partition 1728 -------------------------------------------------- 1729 # In this approach we use a separate partition to hold 1730 # current's root, 'usr', and 'var' directories. A partition 1731 # holding "/", "/usr" and "/var" should be about 2GB in 1732 # size. 1733 1734 <make sure you have good level 0 dumps> 1735 <boot into -stable> 1736 make buildworld 1737 make buildkernel KERNCONF=YOUR_KERNEL_HERE 1738 <maybe newfs current's root partition> 1739 <mount current's root partition on directory ${CURRENT_ROOT}> 1740 make installworld DESTDIR=${CURRENT_ROOT} 1741 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd 1742 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT} 1743 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd 1744 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition> 1745 <reboot into current> 1746 <do a "native" rebuild/install as described in the previous section> 1747 <maybe install compatibility libraries from ports/misc/compat*> 1748 <reboot> 1749 1750 1751 To upgrade in-place from stable to current 1752 ---------------------------------------------- 1753 <make sure you have good level 0 dumps> 1754 make buildworld [9] 1755 make kernel KERNCONF=YOUR_KERNEL_HERE [8] 1756 [1] 1757 <reboot in single user> [3] 1758 mergemaster -p [5] 1759 make installworld 1760 mergemaster -i [4] 1761 make delete-old [6] 1762 <reboot> 1763 1764 Make sure that you've read the UPDATING file to understand the 1765 tweaks to various things you need. At this point in the life 1766 cycle of current, things change often and you are on your own 1767 to cope. The defaults can also change, so please read ALL of 1768 the UPDATING entries. 1769 1770 Also, if you are tracking -current, you must be subscribed to 1771 freebsd-current@freebsd.org. Make sure that before you update 1772 your sources that you have read and understood all the recent 1773 messages there. If in doubt, please track -stable which has 1774 much fewer pitfalls. 1775 1776 [1] If you have third party modules, such as vmware, you 1777 should disable them at this point so they don't crash your 1778 system on reboot. 1779 1780 [3] From the bootblocks, boot -s, and then do 1781 fsck -p 1782 mount -u / 1783 mount -a 1784 cd src 1785 adjkerntz -i # if CMOS is wall time 1786 Also, when doing a major release upgrade, it is required that 1787 you boot into single user mode to do the installworld. 1788 1789 [4] Note: This step is non-optional. Failure to do this step 1790 can result in a significant reduction in the functionality of the 1791 system. Attempting to do it by hand is not recommended and those 1792 that pursue this avenue should read this file carefully, as well 1793 as the archives of freebsd-current and freebsd-hackers mailing lists 1794 for potential gotchas. The -U option is also useful to consider. 1795 See mergemaster(8) for more information. 1796 1797 [5] Usually this step is a noop. However, from time to time 1798 you may need to do this if you get unknown user in the following 1799 step. It never hurts to do it all the time. You may need to 1800 install a new mergemaster (cd src/usr.sbin/mergemaster && make 1801 install) after the buildworld before this step if you last updated 1802 from [78]-stable or 9-stable before 20130430. 1803 1804 [6] This only deletes old files and directories. Old libraries 1805 can be deleted by "make delete-old-libs", but you have to make 1806 sure that no program is using those libraries anymore. 1807 1808 [8] In order to have a kernel that can run the 4.x binaries needed to 1809 do an installworld, you must include the COMPAT_FREEBSD4 option in 1810 your kernel. Failure to do so may leave you with a system that is 1811 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is 1812 required to run the 5.x binaries on more recent kernels. And so on 1813 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7. 1814 1815 Make sure that you merge any new devices from GENERIC since the 1816 last time you updated your kernel config file. 1817 1818 [9] When checking out sources, you must include the -P flag to have 1819 cvs prune empty directories. 1820 1821 If CPUTYPE is defined in your /etc/make.conf, make sure to use the 1822 "?=" instead of the "=" assignment operator, so that buildworld can 1823 override the CPUTYPE if it needs to. 1824 1825 MAKEOBJDIRPREFIX must be defined in an environment variable, and 1826 not on the command line, or in /etc/make.conf. buildworld will 1827 warn if it is improperly defined. 1828FORMAT: 1829 1830This file contains a list, in reverse chronological order, of major 1831breakages in tracking -current. It is not guaranteed to be a complete 1832list of such breakages, and only contains entries since October 10, 2007. 1833If you need to see UPDATING entries from before that date, you will need 1834to fetch an UPDATING file from an older FreeBSD release. 1835 1836Copyright information: 1837 1838Copyright 1998-2009 M. Warner Losh. All Rights Reserved. 1839 1840Redistribution, publication, translation and use, with or without 1841modification, in full or in part, in any form or format of this 1842document are permitted without further permission from the author. 1843 1844THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR 1845IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 1846WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 1847DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT, 1848INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 1849(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 1850SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 1851HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 1852STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 1853IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 1854POSSIBILITY OF SUCH DAMAGE. 1855 1856Contact Warner Losh if you have any questions about your use of 1857this document. 1858 1859$FreeBSD: releng/9.3/UPDATING 288512 2015-10-02 16:37:06Z delphij $ 1860