UPDATING revision 242624
1Updating Information for FreeBSD current users 2 3This file is maintained and copyrighted by M. Warner Losh <imp@freebsd.org>. 4See end of file for further details. For commonly done items, please see the 5COMMON ITEMS: section later in the file. These instructions assume that you 6basically know what you are doing. If not, then please consult the FreeBSD 7handbook. 8 9Items affecting the ports and packages system can be found in 10/usr/ports/UPDATING. Please read that file before running portupgrade. 11 12NOTE TO PEOPLE WHO THINK THAT FreeBSD 10.x IS SLOW: 13 FreeBSD 10.x has many debugging features turned on, in both the kernel 14 and userland. These features attempt to detect incorrect use of 15 system primitives, and encourage loud failure through extra sanity 16 checking and fail stop semantics. They also substantially impact 17 system performance. If you want to do performance measurement, 18 benchmarking, and optimization, you'll want to turn them off. This 19 includes various WITNESS- related kernel options, INVARIANTS, malloc 20 debugging flags in userland, and various verbose features in the 21 kernel. Many developers choose to disable these features on build 22 machines to maximize performance. (To completely disable malloc 23 debugging, define MALLOC_PRODUCTION in /etc/make.conf, or to merely 24 disable the most expensive debugging functionality run 25 "ln -s 'abort:false,junk:false' /etc/malloc.conf".) 26 2720121105: 28 On i386 and amd64 systems WITH_CLANG_IS_CC is now the default. 29 This means that the world and kernel will be compiled with clang 30 and that clang will be installed as /usr/bin/cc, /usr/bin/c++, 31 and /usr/bin/cpp. To disable this behavior and revert to building 32 with gcc, compiler with WITHOUT_CLANG_IS_CC. 33 3420121102: 35 The IPFIREWALL_FORWARD kernel option has been removed. Its 36 functionality now turned on by default. 37 3820121023: 39 The ZERO_COPY_SOCKET kernel option has been removed and 40 split into SOCKET_SEND_COW and SOCKET_RECV_PFLIP. 41 NB: SOCKET_SEND_COW uses the VM page based copy-on-write 42 mechanism which is not safe and may result in kernel crashes. 43 NB: The SOCKET_RECV_PFLIP mechanism is useless as no current 44 driver supports disposeable external page sized mbuf storage. 45 Proper replacements for both zero-copy mechanisms are under 46 consideration and will eventually lead to complete removal 47 of the two kernel options. 48 4920121023: 50 The IPv4 network stack has been converted to network byte 51 order. The following modules need to be recompiled together 52 with kernel: carp(4), divert(4), gif(4), siftr(4), gre(4), 53 pf(4), ipfw(4), ng_ipfw(4), stf(4). 54 5520121022: 56 Support for non-MPSAFE filesystems was removed from VFS. The 57 VFS_VERSION was bumped, all filesystem modules shall be 58 recompiled. 59 6020121018: 61 All the non-MPSAFE filesystems have been disconnected from 62 the build. The full list includes: codafs, hpfs, ntfs, nwfs, 63 portalfs, smbfs, xfs. 64 6520121016: 66 The interface cloning API and ABI has changed. The following 67 modules need to be recompiled together with kernel: 68 ipfw(4), pfsync(4), pflog(4), usb(4), wlan(4), stf(4), 69 vlan(4), disc(4), edsc(4), if_bridge(4), gif(4), tap(4), 70 faith(4), epair(4), enc(4), tun(4), if_lagg(4), gre(4). 71 7220121015: 73 The sdhci driver was split in two parts: sdhci (generic SD Host 74 Controller logic) and sdhci_pci (actual hardware driver). 75 No kernel config modifications are required, but if you 76 load sdhc as a module you must switch to sdhci_pci instead. 77 7820121014: 79 Import the FUSE kernel and userland support into base system. 80 8120121013: 82 The GNU sort(1) program has been removed since the BSD-licensed 83 sort(1) has been the default for quite some time and no serious 84 problems have been reported. The corresponding WITH_GNU_SORT 85 knob has also gone. 86 8720121006: 88 The pfil(9) API/ABI for AF_INET family has been changed. Packet 89 filtering modules: pf(4), ipfw(4), ipfilter(4) need to be recompiled 90 with new kernel. 91 9220121001: 93 The net80211(4) ABI has been changed to allow for improved driver 94 PS-POLL and power-save support. All wireless drivers need to be 95 recompiled to work with the new kernel. 96 9720120913: 98 The random(4) support for the VIA hardware random number 99 generator (`PADLOCK') is no longer enabled unconditionally. 100 Add the PADLOCK_RNG option in the custom kernel config if 101 needed. The GENERIC kernels on i386 and amd64 do include the 102 option, so the change only affects the custom kernel 103 configurations. 104 10520120908: 106 The pf(4) packet filter ABI has been changed. pfctl(8) and 107 snmp_pf module need to be recompiled to work with new kernel. 108 10920120828: 110 A new ZFS feature flag "com.delphix:empty_bpobj" has been merged 111 to -HEAD. Pools that have empty_bpobj in active state can not be 112 imported read-write with ZFS implementations that do not support 113 this feature. For more information read the zpool-features(5) 114 manual page. 115 11620120727: 117 The sparc64 ZFS loader has been changed to no longer try to auto- 118 detect ZFS providers based on diskN aliases but now requires these 119 to be explicitly listed in the OFW boot-device environment variable. 120 12120120712: 122 The OpenSSL has been upgraded to 1.0.1c. Any binaries requiring 123 libcrypto.so.6 or libssl.so.6 must be recompiled. Also, there are 124 configuration changes. Make sure to merge /etc/ssl/openssl.cnf. 125 12620120712: 127 The following sysctls and tunables have been renamed for consistency 128 with other variables: 129 kern.cam.da.da_send_ordered -> kern.cam.da.send_ordered 130 kern.cam.ada.ada_send_ordered -> kern.cam.ada.send_ordered 131 13220120628: 133 The sort utility has been replaced with BSD sort. For now, GNU sort 134 is also available as "gnusort" or the default can be set back to 135 GNU sort by setting WITH_GNU_SORT. In this case, BSD sort will be 136 installed as "bsdsort". 137 13820120611: 139 A new version of ZFS (pool version 5000) has been merged to -HEAD. 140 Starting with this version the old system of ZFS pool versioning 141 is superseded by "feature flags". This concept enables forward 142 compatibility against certain future changes in functionality of ZFS 143 pools. The first read-only compatible "feature flag" for ZFS pools 144 is named "com.delphix:async_destroy". For more information 145 read the new zpool-features(5) manual page. 146 Please refer to the "ZFS notes" section of this file for information 147 on upgrading boot ZFS pools. 148 14920120417: 150 The malloc(3) implementation embedded in libc now uses sources imported 151 as contrib/jemalloc. The most disruptive API change is to 152 /etc/malloc.conf. If your system has an old-style /etc/malloc.conf, 153 delete it prior to installworld, and optionally re-create it using the 154 new format after rebooting. See malloc.conf(5) for details 155 (specifically the TUNING section and the "opt.*" entries in the MALLCTL 156 NAMESPACE section). 157 15820120328: 159 Big-endian MIPS TARGET_ARCH values no longer end in "eb". mips64eb 160 is now spelled mips64. mipsn32eb is now spelled mipsn32. mipseb is 161 now spelled mips. This is to aid compatibility with third-party 162 software that expects this naming scheme in uname(3). Little-endian 163 settings are unchanged. 164 16520120306: 166 Disable by default the option VFS_ALLOW_NONMPSAFE for all supported 167 platforms. 168 16920120229: 170 Now unix domain sockets behave "as expected" on nullfs(5). Previously 171 nullfs(5) did not pass through all behaviours to the underlying layer, 172 as a result if we bound to a socket on the lower layer we could connect 173 only to the lower path; if we bound to the upper layer we could connect 174 only to the upper path. The new behavior is one can connect to both the 175 lower and the upper paths regardless what layer path one binds to. 176 17720120211: 178 The getifaddrs upgrade path broken with 20111215 has been restored. 179 If you have upgraded in between 20111215 and 20120209 you need to 180 recompile libc again with your kernel. You still need to recompile 181 world to be able to configure CARP but this restriction already 182 comes from 20111215. 183 18420120114: 185 The set_rcvar() function has been removed from /etc/rc.subr. All 186 base and ports rc.d scripts have been updated, so if you have a 187 port installed with a script in /usr/local/etc/rc.d you can either 188 hand-edit the rcvar= line, or reinstall the port. 189 190 An easy way to handle the mass-update of /etc/rc.d: 191 rm /etc/rc.d/* && mergemaster -i 192 19320120109: 194 panic(9) now stops other CPUs in the SMP systems, disables interrupts 195 on the current CPU and prevents other threads from running. 196 This behavior can be reverted using the kern.stop_scheduler_on_panic 197 tunable/sysctl. 198 The new behavior can be incompatible with kern.sync_on_panic. 199 20020111215: 201 The carp(4) facility has been changed significantly. Configuration 202 of the CARP protocol via ifconfig(8) has changed, as well as format 203 of CARP events submitted to devd(8) has changed. See manual pages 204 for more information. The arpbalance feature of carp(4) is currently 205 not supported anymore. 206 207 Size of struct in_aliasreq, struct in6_aliasreq has changed. User 208 utilities using SIOCAIFADDR, SIOCAIFADDR_IN6, e.g. ifconfig(8), 209 need to be recompiled. 210 21120111122: 212 The acpi_wmi(4) status device /dev/wmistat has been renamed to 213 /dev/wmistat0. 214 21520111108: 216 The option VFS_ALLOW_NONMPSAFE option has been added in order to 217 explicitely support non-MPSAFE filesystems. 218 It is on by default for all supported platform at this present 219 time. 220 22120111101: 222 The broken amd(4) driver has been replaced with esp(4) in the amd64, 223 i386 and pc98 GENERIC kernel configuration files. 224 22520110930: 226 sysinstall has been removed 227 22820110923: 229 The stable/9 branch created in subversion. This corresponds to the 230 RELENG_9 branch in CVS. 231 23220110913: 233 This commit modifies vfs_register() so that it uses a hash 234 calculation to set vfc_typenum, which is enabled by default. 235 The first time a system is booted after this change, the 236 vfc_typenum values will change for all file systems. The 237 main effect of this is a change to the NFS server file handles 238 for file systems that use vfc_typenum in their fsid, such as ZFS. 239 It will, however, prevent vfc_typenum from changing when file 240 systems are loaded in a different order for subsequent reboots. 241 To disable this, you can set vfs.typenumhash=0 in /boot/loader.conf 242 until you are ready to remount all NFS clients after a reboot. 243 24420110828: 245 Bump the shared library version numbers for libraries that 246 do not use symbol versioning, have changed the ABI compared 247 to stable/8 and which shared library version was not bumped. 248 Done as part of 9.0-RELEASE cycle. 249 25020110815: 251 During the merge of Capsicum features, the fget(9) KPI was modified. 252 This may require the rebuilding of out-of-tree device drivers -- 253 issues have been reported specifically with the nVidia device driver. 254 __FreeBSD_version is bumped to 900041. 255 256 Also, there is a period between 20110811 and 20110814 where the 257 special devices /dev/{stdin,stdout,stderr} did not work correctly. 258 Building world from a kernel during that window may not work. 259 26020110628: 261 The packet filter (pf) code has been updated to OpenBSD 4.5. 262 You need to update userland tools to be in sync with kernel. 263 This update breaks backward compatibility with earlier pfsync(4) 264 versions. Care must be taken when updating redundant firewall setups. 265 26620110608: 267 The following sysctls and tunables are retired on x86 platforms: 268 machdep.hlt_cpus 269 machdep.hlt_logical_cpus 270 The following sysctl is retired: 271 machdep.hyperthreading_allowed 272 The sysctls were supposed to provide a way to dynamically offline and 273 online selected CPUs on x86 platforms, but the implementation has not 274 been reliable especially with SCHED_ULE scheduler. 275 machdep.hyperthreading_allowed tunable is still available to ignore 276 hyperthreading CPUs at OS level. 277 Individual CPUs can be disabled using hint.lapic.X.disabled tunable, 278 where X is an APIC ID of a CPU. Be advised, though, that disabling 279 CPUs in non-uniform fashion will result in non-uniform topology and 280 may lead to sub-optimal system performance with SCHED_ULE, which is 281 a default scheduler. 282 28320110607: 284 cpumask_t type is retired and cpuset_t is used in order to describe 285 a mask of CPUs. 286 28720110531: 288 Changes to ifconfig(8) for dynamic address family detection mandate 289 that you are running a kernel of 20110525 or later. Make sure to 290 follow the update procedure to boot a new kernel before installing 291 world. 292 29320110513: 294 Support for sun4v architecture is officially dropped 295 29620110503: 297 Several KPI breaking changes have been committed to the mii(4) layer, 298 the PHY drivers and consequently some Ethernet drivers using mii(4). 299 This means that miibus.ko and the modules of the affected Ethernet 300 drivers need to be recompiled. 301 302 Note to kernel developers: Given that the OUI bit reversion problem 303 was fixed as part of these changes all mii(4) commits related to OUIs, 304 i.e. to sys/dev/mii/miidevs, PHY driver probing and vendor specific 305 handling, no longer can be merged verbatim to stable/8 and previous 306 branches. 307 30820110430: 309 Users of the Atheros AR71xx SoC code now need to add 'device ar71xx_pci' 310 into their kernel configurations along with 'device pci'. 311 31220110427: 313 The default NFS client is now the new NFS client, so fstype "newnfs" 314 is now "nfs" and the regular/old NFS client is now fstype "oldnfs". 315 Although mounts via fstype "nfs" will usually work without userland 316 changes, it is recommended that the mount(8) and mount_nfs(8) 317 commands be rebuilt from sources and that a link to mount_nfs called 318 mount_oldnfs be created. The new client is compiled into the 319 kernel with "options NFSCL" and this is needed for diskless root 320 file systems. The GENERIC kernel configs have been changed to use 321 NFSCL and NFSD (the new server) instead of NFSCLIENT and NFSSERVER. 322 To use the regular/old client, you can "mount -t oldnfs ...". For 323 a diskless root file system, you must also include a line like: 324 325 vfs.root.mountfrom="oldnfs:" 326 327 in the boot/loader.conf on the root fs on the NFS server to make 328 a diskless root fs use the old client. 329 33020110424: 331 The GENERIC kernels for all architectures now default to the new 332 CAM-based ATA stack. It means that all legacy ATA drivers were 333 removed and replaced by respective CAM drivers. If you are using 334 ATA device names in /etc/fstab or other places, make sure to update 335 them respectively (adX -> adaY, acdX -> cdY, afdX -> daY, astX -> saY, 336 where 'Y's are the sequential numbers starting from zero for each type 337 in order of detection, unless configured otherwise with tunables, 338 see cam(4)). There will be symbolic links created in /dev/ to map 339 old adX devices to the respective adaY. They should provide basic 340 compatibility for file systems mounting in most cases, but they do 341 not support old user-level APIs and do not have respective providers 342 in GEOM. Consider using updated management tools with new device names. 343 344 It is possible to load devices ahci, ata, siis and mvs as modules, 345 but option ATA_CAM should remain in kernel configuration to make ata 346 module work as CAM driver supporting legacy ATA controllers. Device ata 347 still can be used in modular fashion (atacore + ...). Modules atadisk 348 and atapi* are not used and won't affect operation in ATA_CAM mode. 349 Note that to use CAM-based ATA kernel should include CAM devices 350 scbus, pass, da (or explicitly ada), cd and optionally others. All of 351 them are parts of the cam module. 352 353 ataraid(4) functionality is now supported by the RAID GEOM class. 354 To use it you can load geom_raid kernel module and use graid(8) tool 355 for management. Instead of /dev/arX device names, use /dev/raid/rX. 356 357 No kernel config options or code have been removed, so if a problem 358 arises, please report it and optionally revert to the old ATA stack. 359 In order to do it you can remove from the kernel config: 360 options ATA_CAM 361 device ahci 362 device mvs 363 device siis 364 , and instead add back: 365 device atadisk # ATA disk drives 366 device ataraid # ATA RAID drives 367 device atapicd # ATAPI CDROM drives 368 device atapifd # ATAPI floppy drives 369 device atapist # ATAPI tape drives 370 37120110423: 372 The default NFS server has been changed to the new server, which 373 was referred to as the experimental server. If you need to switch 374 back to the old NFS server, you must now put the "-o" option on 375 both the mountd and nfsd commands. This can be done using the 376 mountd_flags and nfs_server_flags rc.conf variables until an 377 update to the rc scripts is committed, which is coming soon. 378 37920110418: 380 The GNU Objective-C runtime library (libobjc), and other Objective-C 381 related components have been removed from the base system. If you 382 require an Objective-C library, please use one of the available ports. 383 38420110331: 385 ath(4) has been split into bus- and device- modules. if_ath contains 386 the HAL, the TX rate control and the network device code. if_ath_pci 387 contains the PCI bus glue. For Atheros MIPS embedded systems, if_ath_ahb 388 contains the AHB glue. Users need to load both if_ath_pci and if_ath 389 in order to use ath on everything else. 390 391 TO REPEAT: if_ath_ahb is not needed for normal users. Normal users only 392 need to load if_ath and if_ath_pci for ath(4) operation. 393 39420110314: 395 As part of the replacement of sysinstall, the process of building 396 release media has changed significantly. For details, please re-read 397 release(7), which has been updated to reflect the new build process. 398 39920110218: 400 GNU binutils 2.17.50 (as of 2007-07-03) has been merged to -HEAD. This 401 is the last available version under GPLv2. It brings a number of new 402 features, such as support for newer x86 CPU's (with SSE-3, SSSE-3, SSE 403 4.1 and SSE 4.2), better support for powerpc64, a number of new 404 directives, and lots of other small improvements. See the ChangeLog 405 file in contrib/binutils for the full details. 406 40720110218: 408 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868 409 compliant, and will now use half of hash for authentication. 410 This will break interoperability with all stacks (including all 411 actual FreeBSD versions) who implement 412 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for 413 authentication). 414 The only workaround with such peers is to use another HMAC 415 algorithm for IPsec ("phase 2") authentication. 416 41720110207: 418 Remove the uio_yield prototype and symbol. This function has 419 been misnamed since it was introduced and should not be 420 globally exposed with this name. The equivalent functionality 421 is now available using kern_yield(curthread->td_user_pri). 422 The function remains undocumented. 423 42420110112: 425 A SYSCTL_[ADD_]UQUAD was added for unsigned uint64_t pointers, 426 symmetric with the existing SYSCTL_[ADD_]QUAD. Type checking 427 for scalar sysctls is defined but disabled. Code that needs 428 UQUAD to pass the type checking that must compile on older 429 systems where the define is not present can check against 430 __FreeBSD_version >= 900030. 431 432 The system dialog(1) has been replaced with a new version previously 433 in ports as devel/cdialog. dialog(1) is mostly command-line compatible 434 with the previous version, but the libdialog associated with it has 435 a largely incompatible API. As such, the original version of libdialog 436 will be kept temporarily as libodialog, until its base system consumers 437 are replaced or updated. Bump __FreeBSD_version to 900030. 438 43920110103: 440 If you are trying to run make universe on a -stable system, and you get 441 the following warning: 442 "Makefile", line 356: "Target architecture for i386/conf/GENERIC 443 unknown. config(8) likely too old." 444 or something similar to it, then you must upgrade your -stable system 445 to 8.2-Release or newer (really, any time after r210146 7/15/2010 in 446 stable/8) or build the config from the latest stable/8 branch and 447 install it on your system. 448 449 Prior to this date, building a current universe on 8-stable system from 450 between 7/15/2010 and 1/2/2011 would result in a weird shell parsing 451 error in the first kernel build phase. A new config on those old 452 systems will fix that problem for older versions of -current. 453 45420101228: 455 The TCP stack has been modified to allow Khelp modules to interact with 456 it via helper hook points and store per-connection data in the TCP 457 control block. Bump __FreeBSD_version to 900029. User space tools that 458 rely on the size of struct tcpcb in tcp_var.h (e.g. sockstat) need to 459 be recompiled. 460 46120101114: 462 Generic IEEE 802.3 annex 31B full duplex flow control support has been 463 added to mii(4) and bge(4), bce(4), msk(4), nfe(4) and stge(4) along 464 with brgphy(4), e1000phy(4) as well as ip1000phy() have been converted 465 to take advantage of it instead of using custom implementations. This 466 means that these drivers now no longer unconditionally advertise 467 support for flow control but only do so if flow control is a selected 468 media option. This was implemented in the generic support that way in 469 order to allow flow control to be switched on and off via ifconfig(8) 470 with the PHY specific default to typically off in order to protect 471 from unwanted effects. Consequently, if you used flow control with 472 one of the above mentioned drivers you now need to explicitly enable 473 it, for example via: 474 ifconfig bge0 media auto mediaopt flowcontrol 475 476 Along with the above mentioned changes generic support for setting 477 1000baseT master mode also has been added and brgphy(4), ciphy(4), 478 e1000phy(4) as well as ip1000phy(4) have been converted to take 479 advantage of it. This means that these drivers now no longer take the 480 link0 parameter for selecting master mode but the master media option 481 has to be used instead, for example like in the following: 482 ifconfig bge0 media 1000baseT mediaopt full-duplex,master 483 484 Selection of master mode now is also available with all other PHY 485 drivers supporting 1000baseT. 486 48720101111: 488 The TCP stack has received a significant update to add support for 489 modularised congestion control and generally improve the clarity of 490 congestion control decisions. Bump __FreeBSD_version to 900025. User 491 space tools that rely on the size of struct tcpcb in tcp_var.h (e.g. 492 sockstat) need to be recompiled. 493 49420101002: 495 The man(1) utility has been replaced by a new version that no longer 496 uses /etc/manpath.config. Please consult man.conf(5) for how to 497 migrate local entries to the new format. 498 49920100928: 500 The copyright strings printed by login(1) and sshd(8) at the time of a 501 new connection have been removed to follow other operating systems and 502 upstream sshd. 503 50420100915: 505 A workaround for a fixed ld bug has been removed in kernel code, 506 so make sure that your system ld is built from sources after 507 revision 210245 from 2010-07-19 (r211583 if building head kernel 508 on stable/8, r211584 for stable/7; both from 2010-08-21). 509 A symptom of incorrect ld version is different addresses for 510 set_pcpu section and __start_set_pcpu symbol in kernel and/or modules. 511 51220100913: 513 The $ipv6_prefer variable in rc.conf(5) has been split into 514 $ip6addrctl_policy and $ipv6_activate_all_interfaces. 515 516 The $ip6addrctl_policy is a variable to choose a pre-defined 517 address selection policy set by ip6addrctl(8). A value 518 "ipv4_prefer", "ipv6_prefer" or "AUTO" can be specified. The 519 default is "AUTO". 520 521 The $ipv6_activate_all_interfaces specifies whether IFDISABLED 522 flag (see an entry of 20090926) is set on an interface with no 523 corresponding $ifconfig_IF_ipv6 line. The default is "NO" for 524 security reason. If you want IPv6 link-local address on all 525 interfaces by default, set this to "YES". 526 527 The old ipv6_prefer="YES" is equivalent to 528 ipv6_activate_all_interfaces="YES" and 529 ip6addrctl_policy="ipv6_prefer". 530 53120100913: 532 DTrace has grown support for userland tracing. Due to this, DTrace is 533 now i386 and amd64 only. 534 dtruss(1) is now installed by default on those systems and a new 535 kernel module is needed for userland tracing: fasttrap. 536 No changes to your kernel config file are necessary to enable 537 userland tracing, but you might consider adding 'STRIP=' and 538 'CFLAGS+=-fno-omit-frame-pointer' to your make.conf if you want 539 to have informative userland stack traces in DTrace (ustack). 540 54120100725: 542 The acpi_aiboost(4) driver has been removed in favor of the new 543 aibs(4) driver. You should update your kernel configuration file. 544 54520100722: 546 BSD grep has been imported to the base system and it is built by 547 default. It is completely BSD licensed, highly GNU-compatible, uses 548 less memory than its GNU counterpart and has a small codebase. 549 However, it is slower than its GNU counterpart, which is mostly 550 noticeable for larger searches, for smaller ones it is measurable 551 but not significant. The reason is complex, the most important factor 552 is that we lack a modern and efficient regex library and GNU 553 overcomes this by optimizing the searches internally. Future work 554 on improving the regex performance is planned, for the meantime, 555 users that need better performance, can build GNU grep instead by 556 setting the WITH_GNU_GREP knob. 557 55820100713: 559 Due to the import of powerpc64 support, all existing powerpc kernel 560 configuration files must be updated with a machine directive like this: 561 machine powerpc powerpc 562 563 In addition, an updated config(8) is required to build powerpc kernels 564 after this change. 565 56620100713: 567 A new version of ZFS (version 15) has been merged to -HEAD. 568 This version uses a python library for the following subcommands: 569 zfs allow, zfs unallow, zfs groupspace, zfs userspace. 570 For full functionality of these commands the following port must 571 be installed: sysutils/py-zfs 572 57320100429: 574 'vm_page's are now hashed by physical address to an array of mutexes. 575 Currently this is only used to serialize access to hold_count. Over 576 time the page queue mutex will be peeled away. This changes the size 577 of pmap on every architecture. And requires all callers of vm_page_hold 578 and vm_page_unhold to be updated. 579 58020100402: 581 WITH_CTF can now be specified in src.conf (not recommended, there 582 are some problems with static executables), make.conf (would also 583 affect ports which do not use GNU make and do not override the 584 compile targets) or in the kernel config (via "makeoptions 585 WITH_CTF=yes"). 586 When WITH_CTF was specified there before this was silently ignored, 587 so make sure that WITH_CTF is not used in places which could lead 588 to unwanted behavior. 589 59020100311: 591 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32 592 to allow 32-bit compatibility on non-x86 platforms. All kernel 593 configurations on amd64 and ia64 platforms using these options must 594 be modified accordingly. 595 59620100113: 597 The utmp user accounting database has been replaced with utmpx, 598 the user accounting interface standardized by POSIX. 599 Unfortunately the semantics of utmp and utmpx don't match, 600 making it practically impossible to support both interfaces. 601 The user accounting database is used by tools like finger(1), 602 last(1), talk(1), w(1) and ac(8). 603 604 All applications in the base system use utmpx. This means only 605 local binaries (e.g. from the ports tree) may still use these 606 utmp database files. These applications must be rebuilt to make 607 use of utmpx. 608 609 After the system has been upgraded, it is safe to remove the old 610 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*), 611 assuming their contents is of no importance anymore. Old wtmp 612 databases can only be used by last(1) and ac(8) after they have 613 been converted to the new format using wtmpcvt(1). 614 61520100108: 616 Introduce the kernel thread "deadlock resolver" (which can be enabled 617 via the DEADLKRES option, see NOTES for more details) and the 618 sleepq_type() function for sleepqueues. 619 62020091202: 621 The rc.firewall and rc.firewall6 were unified, and 622 rc.firewall6 and rc.d/ip6fw were removed. 623 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc 624 variables are obsoleted. Instead, the following new rc 625 variables are added to rc.d/ipfw: 626 627 firewall_client_net_ipv6, firewall_simple_iif_ipv6, 628 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6, 629 firewall_simple_onet_ipv6, firewall_trusted_ipv6 630 631 The meanings correspond to the relevant IPv4 variables. 632 63320091125: 634 8.0-RELEASE. 635 63620091113: 637 The default terminal emulation for syscons(4) has been changed 638 from cons25 to xterm on all platforms except pc98. This means 639 that the /etc/ttys file needs to be updated to ensure correct 640 operation of applications on the console. 641 642 The terminal emulation style can be toggled per window by using 643 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration 644 options can be used to change the compile-time default back to 645 cons25. 646 647 To prevent graphical artifacts, make sure the TERM environment 648 variable is set to match the terminal emulation that is being 649 performed by syscons(4). 650 65120091109: 652 The layout of the structure ieee80211req_scan_result has changed. 653 Applications that require wireless scan results (e.g. ifconfig(8)) 654 from net80211 need to be recompiled. 655 656 Applications such as wpa_supplicant(8) may require a full world 657 build without using NO_CLEAN in order to get synchronized with the 658 new structure. 659 66020091025: 661 The iwn(4) driver has been updated to support the 5000 and 5150 series. 662 There's one kernel module for each firmware. Adding "device iwnfw" 663 to the kernel configuration file means including all three firmware 664 images inside the kernel. If you want to include just the one for 665 your wireless card, use the devices iwn4965fw, iwn5000fw or 666 iwn5150fw. 667 66820090926: 669 The rc.d/network_ipv6, IPv6 configuration script has been integrated 670 into rc.d/netif. The changes are the following: 671 672 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF 673 for IPv4. For aliases, $ifconfig_IF_aliasN should be used. 674 Note that both variables need the "inet6" keyword at the head. 675 676 Do not set $ipv6_network_interfaces manually if you do not 677 understand what you are doing. It is not needed in most cases. 678 679 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but 680 they are obsolete. 681 682 2. $ipv6_enable is obsolete. Use $ipv6_prefer and 683 "inet6 accept_rtadv" keyword in ifconfig(8) instead. 684 685 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and 686 all configured interfaces have "inet6 accept_rtadv" in the 687 $ifconfig_IF_ipv6. These are for backward compatibility. 688 689 3. A new variable $ipv6_prefer has been added. If NO, IPv6 690 functionality of interfaces with no corresponding 691 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag, 692 and the default address selection policy of ip6addrctl(8) 693 is the IPv4-preferred one (see rc.d/ip6addrctl for more details). 694 Note that if you want to configure IPv6 functionality on the 695 disabled interfaces after boot, first you need to clear the flag by 696 using ifconfig(8) like: 697 698 ifconfig em0 inet6 -ifdisabled 699 700 If YES, the default address selection policy is set as 701 IPv6-preferred. 702 703 The default value of $ipv6_prefer is NO. 704 705 4. If your system need to receive Router Advertisement messages, 706 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8) 707 scripts automatically invoke rtsol(8) when the interface becomes 708 UP. The Router Advertisement messages are used for SLAAC 709 (State-Less Address AutoConfiguration). 710 71120090922: 712 802.11s D3.03 support was committed. This is incompatible with the 713 previous code, which was based on D3.0. 714 71520090912: 716 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value 717 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to 718 control whether accepting Router Advertisement messages or not. 719 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and 720 a sysctl variable net.inet6.ip6.auto_linklocal is its default value. 721 The ifconfig(8) utility now supports these flags. 722 72320090910: 724 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for 725 mount(8) and -a option for df(1) to see them. 726 72720090825: 728 The old tunable hw.bus.devctl_disable has been superseded by 729 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be 730 replaced by hw.bus.devctl_queue=0. The default for this new tunable 731 is 1000. 732 73320090813: 734 Remove the option STOP_NMI. The default action is now to use NMI only 735 for KDB via the newly introduced function stop_cpus_hard() and 736 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64. 737 73820090803: 739 The stable/8 branch created in subversion. This corresponds to the 740 RELENG_8 branch in CVS. 741 74220090719: 743 Bump the shared library version numbers for all libraries that do not 744 use symbol versioning as part of the 8.0-RELEASE cycle. Bump 745 __FreeBSD_version to 800105. 746 74720090714: 748 Due to changes in the implementation of virtual network stack support, 749 all network-related kernel modules must be recompiled. As this change 750 breaks the ABI, bump __FreeBSD_version to 800104. 751 75220090713: 753 The TOE interface to the TCP syncache has been modified to remove 754 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. 755 The cxgb driver is the only TOE consumer affected by this change, and 756 needs to be recompiled along with the kernel. As this change breaks 757 the ABI, bump __FreeBSD_version to 800103. 758 75920090712: 760 Padding has been added to struct tcpcb, sackhint and tcpstat in 761 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst 762 maintaining the ABI. However, this change breaks the ABI, so bump 763 __FreeBSD_version to 800102. User space tools that rely on the size of 764 any of these structs (e.g. sockstat) need to be recompiled. 765 76620090630: 767 The NFS_LEGACYRPC option has been removed along with the old kernel 768 RPC implementation that this option selected. Kernel configurations 769 may need to be adjusted. 770 77120090629: 772 The network interface device nodes at /dev/net/<interface> have been 773 removed. All ioctl operations can be performed the normal way using 774 routing sockets. The kqueue functionality can generally be replaced 775 with routing sockets. 776 77720090628: 778 The documentation from the FreeBSD Documentation Project (Handbook, 779 FAQ, etc.) is now installed via packages by sysinstall(8) and under 780 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc. 781 78220090624: 783 The ABI of various structures related to the SYSV IPC API have been 784 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel 785 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to 786 800100. 787 78820090622: 789 Layout of struct vnet has changed as routing related variables were 790 moved to their own Vimage module. Modules need to be recompiled. Bump 791 __FreeBSD_version to 800099. 792 79320090619: 794 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024 795 respectively. As long as no more than 16 groups per process are used, 796 no changes should be visible. When more than 16 groups are used, old 797 binaries may fail if they call getgroups() or getgrouplist() with 798 statically sized storage. Recompiling will work around this, but 799 applications should be modified to use dynamically allocated storage 800 for group arrays as POSIX.1-2008 does not cap an implementation's 801 number of supported groups at NGROUPS_MAX+1 as previous versions did. 802 803 NFS and portalfs mounts may also be affected as the list of groups is 804 truncated to 16. Users of NFS who use more than 16 groups, should 805 take care that negative group permissions are not used on the exported 806 file systems as they will not be reliable unless a GSSAPI based 807 authentication method is used. 808 80920090616: 810 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This 811 option compiles in the support for adaptive spinning for lockmgrs 812 which want to enable it. The lockinit() function now accepts the flag 813 LK_ADAPTIVE in order to make the lock object subject to adaptive 814 spinning when both held in write and read mode. 815 81620090613: 817 The layout of the structure returned by IEEE80211_IOC_STA_INFO has 818 changed. User applications that use this ioctl need to be rebuilt. 819 82020090611: 821 The layout of struct thread has changed. Kernel and modules need to 822 be rebuilt. 823 82420090608: 825 The layout of structs ifnet, domain, protosw and vnet_net has changed. 826 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097. 827 82820090602: 829 window(1) has been removed from the base system. It can now be 830 installed from ports. The port is called misc/window. 831 83220090601: 833 The way we are storing and accessing `routing table' entries has 834 changed. Programs reading the FIB, like netstat, need to be 835 re-compiled. 836 83720090601: 838 A new netisr implementation has been added for FreeBSD 8. Network 839 file system modules, such as igmp, ipdivert, and others, should be 840 rebuilt. 841 Bump __FreeBSD_version to 800096. 842 84320090530: 844 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no 845 more valid. 846 84720090530: 848 Add VOP_ACCESSX(9). File system modules need to be rebuilt. 849 Bump __FreeBSD_version to 800094. 850 85120090529: 852 Add mnt_xflag field to 'struct mount'. File system modules need to be 853 rebuilt. 854 Bump __FreeBSD_version to 800093. 855 85620090528: 857 The compiling option ADAPTIVE_SX has been retired while it has been 858 introduced the option NO_ADAPTIVE_SX which handles the reversed logic. 859 The KPI for sx_init_flags() changes as accepting flags: 860 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has 861 been introduced in order to handle the reversed logic. 862 Bump __FreeBSD_version to 800092. 863 86420090527: 865 Add support for hierarchical jails. Remove global securelevel. 866 Bump __FreeBSD_version to 800091. 867 86820090523: 869 The layout of struct vnet_net has changed, therefore modules 870 need to be rebuilt. 871 Bump __FreeBSD_version to 800090. 872 87320090523: 874 The newly imported zic(8) produces a new format in the output. Please 875 run tzsetup(8) to install the newly created data to /etc/localtime. 876 87720090520: 878 The sysctl tree for the usb stack has renamed from hw.usb2.* to 879 hw.usb.* and is now consistent again with previous releases. 880 88120090520: 882 802.11 monitor mode support was revised and driver api's were changed. 883 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead 884 of DLT_IEEE802_11. No user-visible data structures were changed but 885 applications that use DLT_IEEE802_11 may require changes. 886 Bump __FreeBSD_version to 800088. 887 88820090430: 889 The layout of the following structs has changed: sysctl_oid, 890 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet, 891 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or 892 panics may be experienced. World rebuild is required for 893 correctly checking networking state from userland. 894 Bump __FreeBSD_version to 800085. 895 89620090429: 897 MLDv2 and Source-Specific Multicast (SSM) have been merged 898 to the IPv6 stack. VIMAGE hooks are in but not yet used. 899 The implementation of SSM within FreeBSD's IPv6 stack closely 900 follows the IPv4 implementation. 901 902 For kernel developers: 903 904 * The most important changes are that the ip6_output() and 905 ip6_input() paths no longer take the IN6_MULTI_LOCK, 906 and this lock has been downgraded to a non-recursive mutex. 907 908 * As with the changes to the IPv4 stack to support SSM, filtering 909 of inbound multicast traffic must now be performed by transport 910 protocols within the IPv6 stack. This does not apply to TCP and 911 SCTP, however, it does apply to UDP in IPv6 and raw IPv6. 912 913 * The KPIs used by IPv6 multicast are similar to those used by 914 the IPv4 stack, with the following differences: 915 * im6o_mc_filter() is analogous to imo_multicast_filter(). 916 * The legacy KAME entry points in6_joingroup and in6_leavegroup() 917 are shimmed to in6_mc_join() and in6_mc_leave() respectively. 918 * IN6_LOOKUP_MULTI() has been deprecated and removed. 919 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs 920 for MLDv1 have an additional 'timer' argument which is used to 921 jitter the initial membership report for the solicited-node 922 multicast membership on-link. 923 * This is not strictly needed for MLDv2, which already jitters 924 its report transmissions. However, the 'timer' argument is 925 preserved in case MLDv1 is active on the interface. 926 927 * The KAME linked-list based IPv6 membership implementation has 928 been refactored to use a vector similar to that used by the IPv4 929 stack. 930 Code which maintains a list of its own multicast memberships 931 internally, e.g. carp, has been updated to reflect the new 932 semantics. 933 934 * There is a known Lock Order Reversal (LOR) due to in6_setscope() 935 acquiring the IF_AFDATA_LOCK and being called within ip6_output(). 936 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an 937 implementation constraint which needs to be addressed in HEAD. 938 939 For application developers: 940 941 * The changes are broadly similar to those made for the IPv4 942 stack. 943 944 * The use of IPv4 and IPv6 multicast socket options on the same 945 socket, using mapped addresses, HAS NOT been tested or supported. 946 947 * There are a number of issues with the implementation of various 948 IPv6 multicast APIs which need to be resolved in the API surface 949 before the implementation is fully compatible with KAME userland 950 use, and these are mostly to do with interface index treatment. 951 952 * The literature available discusses the use of either the delta / ASM 953 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API 954 using setsourcefilter(3)/getsourcefilter(3). For more information 955 please refer to RFC 3768, 'Socket Interface Extensions for 956 Multicast Source Filters'. 957 958 * Applications which use the published RFC 3678 APIs should be fine. 959 960 For systems administrators: 961 962 * The mtest(8) utility has been refactored to support IPv6, in 963 addition to IPv4. Interface addresses are no longer accepted 964 as arguments, their names must be used instead. The utility 965 will map the interface name to its first IPv4 address as 966 returned by getifaddrs(3). 967 968 * The ifmcstat(8) utility has also been updated to print the MLDv2 969 endpoint state and source filter lists via sysctl(3). 970 971 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable 972 loopback of IPv6 multicast datagrams by default; it defaults to 1 973 to preserve the existing behaviour. Disabling multicast loopback is 974 recommended for optimal system performance. 975 976 * The IPv6 MROUTING code has been changed to examine this sysctl 977 instead of attempting to perform a group lookup before looping 978 back forwarded datagrams. 979 980 Bump __FreeBSD_version to 800084. 981 98220090422: 983 Implement low-level Bluetooth HCI API. 984 Bump __FreeBSD_version to 800083. 985 98620090419: 987 The layout of struct malloc_type, used by modules to register new 988 memory allocation types, has changed. Most modules will need to 989 be rebuilt or panics may be experienced. 990 Bump __FreeBSD_version to 800081. 991 99220090415: 993 Anticipate overflowing inp_flags - add inp_flags2. 994 This changes most offsets in inpcb, so checking v4 connection 995 state will require a world rebuild. 996 Bump __FreeBSD_version to 800080. 997 99820090415: 999 Add an llentry to struct route and struct route_in6. Modules 1000 embedding a struct route will need to be recompiled. 1001 Bump __FreeBSD_version to 800079. 1002 100320090414: 1004 The size of rt_metrics_lite and by extension rtentry has changed. 1005 Networking administration apps will need to be recompiled. 1006 The route command now supports show as an alias for get, weighting 1007 of routes, sticky and nostick flags to alter the behavior of stateful 1008 load balancing. 1009 Bump __FreeBSD_version to 800078. 1010 101120090408: 1012 Do not use Giant for kbdmux(4) locking. This is wrong and 1013 apparently causing more problems than it solves. This will 1014 re-open the issue where interrupt handlers may race with 1015 kbdmux(4) in polling mode. Typical symptoms include (but 1016 not limited to) duplicated and/or missing characters when 1017 low level console functions (such as gets) are used while 1018 interrupts are enabled (for example geli password prompt, 1019 mountroot prompt etc.). Disabling kbdmux(4) may help. 1020 102120090407: 1022 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed; 1023 kernel modules referencing any of the above need to be recompiled. 1024 Bump __FreeBSD_version to 800075. 1025 102620090320: 1027 GEOM_PART has become the default partition slicer for storage devices, 1028 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It 1029 introduces some changes: 1030 1031 MSDOS/EBR: the devices created from MSDOS extended partition entries 1032 (EBR) can be named differently than with GEOM_MBR and are now symlinks 1033 to devices with offset-based names. fstabs may need to be modified. 1034 1035 BSD: the "geometry does not match label" warning is harmless in most 1036 cases but it points to problems in file system misalignment with 1037 disk geometry. The "c" partition is now implicit, covers the whole 1038 top-level drive and cannot be (mis)used by users. 1039 1040 General: Kernel dumps are now not allowed to be written to devices 1041 whose partition types indicate they are meant to be used for file 1042 systems (or, in case of MSDOS partitions, as something else than 1043 the "386BSD" type). 1044 1045 Most of these changes date approximately from 200812. 1046 104720090319: 1048 The uscanner(4) driver has been removed from the kernel. This follows 1049 Linux removing theirs in 2.6 and making libusb the default interface 1050 (supported by sane). 1051 105220090319: 1053 The multicast forwarding code has been cleaned up. netstat(1) 1054 only relies on KVM now for printing bandwidth upcall meters. 1055 The IPv4 and IPv6 modules are split into ip_mroute_mod and 1056 ip6_mroute_mod respectively. The config(5) options for statically 1057 compiling this code remain the same, i.e. 'options MROUTING'. 1058 105920090315: 1060 Support for the IFF_NEEDSGIANT network interface flag has been 1061 removed, which means that non-MPSAFE network device drivers are no 1062 longer supported. In particular, if_ar, if_sr, and network device 1063 drivers from the old (legacy) USB stack can no longer be built or 1064 used. 1065 106620090313: 1067 POSIX.1 Native Language Support (NLS) has been enabled in libc and 1068 a bunch of new language catalog files have also been added. 1069 This means that some common libc messages are now localized and 1070 they depend on the LC_MESSAGES environmental variable. 1071 107220090313: 1073 The k8temp(4) driver has been renamed to amdtemp(4) since 1074 support for Family 10 and Family 11 CPU families was added. 1075 107620090309: 1077 IGMPv3 and Source-Specific Multicast (SSM) have been merged 1078 to the IPv4 stack. VIMAGE hooks are in but not yet used. 1079 1080 For kernel developers, the most important changes are that the 1081 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(), 1082 and this lock has been downgraded to a non-recursive mutex. 1083 1084 Transport protocols (UDP, Raw IP) are now responsible for filtering 1085 inbound multicast traffic according to group membership and source 1086 filters. The imo_multicast_filter() KPI exists for this purpose. 1087 Transports which do not use multicast (SCTP, TCP) already reject 1088 multicast by default. Forwarding and receive performance may improve 1089 as a mutex acquisition is no longer needed in the ip_input() 1090 low-level input path. in_addmulti() and in_delmulti() are shimmed 1091 to new KPIs which exist to support SSM in-kernel. 1092 1093 For application developers, it is recommended that loopback of 1094 multicast datagrams be disabled for best performance, as this 1095 will still cause the lock to be taken for each looped-back 1096 datagram transmission. The net.inet.ip.mcast.loop sysctl may 1097 be tuned to 0 to disable loopback by default; it defaults to 1 1098 to preserve the existing behaviour. 1099 1100 For systems administrators, to obtain best performance with 1101 multicast reception and multiple groups, it is always recommended 1102 that a card with a suitably precise hash filter is used. Hash 1103 collisions will still result in the lock being taken within the 1104 transport protocol input path to check group membership. 1105 1106 If deploying FreeBSD in an environment with IGMP snooping switches, 1107 it is recommended that the net.inet.igmp.sendlocal sysctl remain 1108 enabled; this forces 224.0.0.0/24 group membership to be announced 1109 via IGMP. 1110 1111 The size of 'struct igmpstat' has changed; netstat needs to be 1112 recompiled to reflect this. 1113 Bump __FreeBSD_version to 800070. 1114 111520090309: 1116 libusb20.so.1 is now installed as libusb.so.1 and the ports system 1117 updated to use it. This requires a buildworld/installworld in order to 1118 update the library and dependencies (usbconfig, etc). Its advisable to 1119 rebuild all ports which uses libusb. More specific directions are given 1120 in the ports collection UPDATING file. Any /etc/libmap.conf entries for 1121 libusb are no longer required and can be removed. 1122 112320090302: 1124 A workaround is committed to allow the creation of System V shared 1125 memory segment of size > 2 GB on the 64-bit architectures. 1126 Due to a limitation of the existing ABI, the shm_segsz member 1127 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is 1128 wrong for large segments. Note that limits must be explicitly 1129 raised to allow such segments to be created. 1130 113120090301: 1132 The layout of struct ifnet has changed, requiring a rebuild of all 1133 network device driver modules. 1134 113520090227: 1136 The /dev handling for the new USB stack has changed, a 1137 buildworld/installworld is required for libusb20. 1138 113920090223: 1140 The new USB2 stack has now been permanently moved in and all kernel and 1141 module names reverted to their previous values (eg, usb, ehci, ohci, 1142 ums, ...). The old usb stack can be compiled in by prefixing the name 1143 with the letter 'o', the old usb modules have been removed. 1144 Updating entry 20090216 for xorg and 20090215 for libmap may still 1145 apply. 1146 114720090217: 1148 The rc.conf(5) option if_up_delay has been renamed to 1149 defaultroute_delay to better reflect its purpose. If you have 1150 customized this setting in /etc/rc.conf you need to update it to 1151 use the new name. 1152 115320090216: 1154 xorg 7.4 wants to configure its input devices via hald which does not 1155 yet work with USB2. If the keyboard/mouse does not work in xorg then 1156 add 1157 Option "AllowEmptyInput" "off" 1158 to your ServerLayout section. This will cause X to use the configured 1159 kbd and mouse sections from your xorg.conf. 1160 116120090215: 1162 The GENERIC kernels for all architectures now default to the new USB2 1163 stack. No kernel config options or code have been removed so if a 1164 problem arises please report it and optionally revert to the old USB 1165 stack. If you are loading USB kernel modules or have a custom kernel 1166 that includes GENERIC then ensure that usb names are also changed over, 1167 eg uftdi -> usb2_serial_ftdi. 1168 1169 Older programs linked against the ports libusb 0.1 need to be 1170 redirected to the new stack's libusb20. /etc/libmap.conf can 1171 be used for this: 1172 # Map old usb library to new one for usb2 stack 1173 libusb-0.1.so.8 libusb20.so.1 1174 117520090209: 1176 All USB ethernet devices now attach as interfaces under the name ueN 1177 (eg. ue0). This is to provide a predictable name as vendors often 1178 change usb chipsets in a product without notice. 1179 118020090203: 1181 The ichsmb(4) driver has been changed to require SMBus slave 1182 addresses be left-justified (xxxxxxx0b) rather than right-justified. 1183 All of the other SMBus controller drivers require left-justified 1184 slave addresses, so this change makes all the drivers provide the 1185 same interface. 1186 118720090201: 1188 INET6 statistics (struct ip6stat) was updated. 1189 netstat(1) needs to be recompiled. 1190 119120090119: 1192 NTFS has been removed from GENERIC kernel on amd64 to match 1193 GENERIC on i386. Should not cause any issues since mount_ntfs(8) 1194 will load ntfs.ko module automatically when NTFS support is 1195 actually needed, unless ntfs.ko is not installed or security 1196 level prohibits loading kernel modules. If either is the case, 1197 "options NTFS" has to be added into kernel config. 1198 119920090115: 1200 TCP Appropriate Byte Counting (RFC 3465) support added to kernel. 1201 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to 1202 800061. User space tools that rely on the size of struct tcpcb in 1203 tcp_var.h (e.g. sockstat) need to be recompiled. 1204 120520081225: 1206 ng_tty(4) module updated to match the new TTY subsystem. 1207 Due to API change, user-level applications must be updated. 1208 New API support added to mpd5 CVS and expected to be present 1209 in next mpd5.3 release. 1210 121120081219: 1212 With __FreeBSD_version 800060 the makefs tool is part of 1213 the base system (it was a port). 1214 121520081216: 1216 The afdata and ifnet locks have been changed from mutexes to 1217 rwlocks, network modules will need to be re-compiled. 1218 121920081214: 1220 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite. 1221 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated. 1222 The new code reduced struct rtentry{} by 16 bytes on 32-bit 1223 architecture and 40 bytes on 64-bit architecture. The userland 1224 applications "arp" and "ndp" have been updated accordingly. 1225 The output from "netstat -r" shows only routing entries and 1226 none of the L2 information. 1227 122820081130: 1229 __FreeBSD_version 800057 marks the switchover from the 1230 binary ath hal to source code. Users must add the line: 1231 1232 options AH_SUPPORT_AR5416 1233 1234 to their kernel config files when specifying: 1235 1236 device ath_hal 1237 1238 The ath_hal module no longer exists; the code is now compiled 1239 together with the driver in the ath module. It is now 1240 possible to tailor chip support (i.e. reduce the set of chips 1241 and thereby the code size); consult ath_hal(4) for details. 1242 124320081121: 1244 __FreeBSD_version 800054 adds memory barriers to 1245 <machine/atomic.h>, new interfaces to ifnet to facilitate 1246 multiple hardware transmit queues for cards that support 1247 them, and a lock-less ring-buffer implementation to 1248 enable drivers to more efficiently manage queueing of 1249 packets. 1250 125120081117: 1252 A new version of ZFS (version 13) has been merged to -HEAD. 1253 This version has zpool attribute "listsnapshots" off by 1254 default, which means "zfs list" does not show snapshots, 1255 and is the same as Solaris behavior. 1256 125720081028: 1258 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled. 1259 126020081009: 1261 The uhci, ohci, ehci and slhci USB Host controller drivers have 1262 been put into separate modules. If you load the usb module 1263 separately through loader.conf you will need to load the 1264 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0 1265 controller add the following to loader.conf: 1266 1267 uhci_load="YES" 1268 ehci_load="YES" 1269 127020081009: 1271 The ABI used by the PMC toolset has changed. Please keep 1272 userland (libpmc(3)) and the kernel module (hwpmc(4)) in 1273 sync. 1274 127520081009: 1276 atapci kernel module now includes only generic PCI ATA 1277 driver. AHCI driver moved to ataahci kernel module. 1278 All vendor-specific code moved into separate kernel modules: 1279 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek, 1280 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron, 1281 atamarvell, atamicron, atanational, atanetcell, atanvidia, 1282 atapromise, ataserverworks, atasiliconimage, atasis, atavia 1283 128420080820: 1285 The TTY subsystem of the kernel has been replaced by a new 1286 implementation, which provides better scalability and an 1287 improved driver model. Most common drivers have been migrated to 1288 the new TTY subsystem, while others have not. The following 1289 drivers have not yet been ported to the new TTY layer: 1290 1291 PCI/ISA: 1292 cy, digi, rc, rp, sio 1293 1294 USB: 1295 ubser, ucycom 1296 1297 Line disciplines: 1298 ng_h4, ng_tty, ppp, sl, snp 1299 1300 Adding these drivers to your kernel configuration file shall 1301 cause compilation to fail. 1302 130320080818: 1304 ntpd has been upgraded to 4.2.4p5. 1305 130620080801: 1307 OpenSSH has been upgraded to 5.1p1. 1308 1309 For many years, FreeBSD's version of OpenSSH preferred DSA 1310 over RSA for host and user authentication keys. With this 1311 upgrade, we've switched to the vendor's default of RSA over 1312 DSA. This may cause upgraded clients to warn about unknown 1313 host keys even for previously known hosts. Users should 1314 follow the usual procedure for verifying host keys before 1315 accepting the RSA key. 1316 1317 This can be circumvented by setting the "HostKeyAlgorithms" 1318 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh 1319 command line. 1320 1321 Please note that the sequence of keys offered for 1322 authentication has been changed as well. You may want to 1323 specify IdentityFile in a different order to revert this 1324 behavior. 1325 132620080713: 1327 The sio(4) driver has been removed from the i386 and amd64 1328 kernel configuration files. This means uart(4) is now the 1329 default serial port driver on those platforms as well. 1330 1331 To prevent collisions with the sio(4) driver, the uart(4) driver 1332 uses different names for its device nodes. This means the 1333 onboard serial port will now most likely be called "ttyu0" 1334 instead of "ttyd0". You may need to reconfigure applications to 1335 use the new device names. 1336 1337 When using the serial port as a boot console, be sure to update 1338 /boot/device.hints and /etc/ttys before booting the new kernel. 1339 If you forget to do so, you can still manually specify the hints 1340 at the loader prompt: 1341 1342 set hint.uart.0.at="isa" 1343 set hint.uart.0.port="0x3F8" 1344 set hint.uart.0.flags="0x10" 1345 set hint.uart.0.irq="4" 1346 boot -s 1347 134820080609: 1349 The gpt(8) utility has been removed. Use gpart(8) to partition 1350 disks instead. 1351 135220080603: 1353 The version that Linuxulator emulates was changed from 2.4.2 1354 to 2.6.16. If you experience any problems with Linux binaries 1355 please try to set sysctl compat.linux.osrelease to 2.4.2 and 1356 if it fixes the problem contact emulation mailing list. 1357 135820080525: 1359 ISDN4BSD (I4B) was removed from the src tree. You may need to 1360 update a your kernel configuration and remove relevant entries. 1361 136220080509: 1363 I have checked in code to support multiple routing tables. 1364 See the man pages setfib(1) and setfib(2). 1365 This is a hopefully backwards compatible version, 1366 but to make use of it you need to compile your kernel 1367 with options ROUTETABLES=2 (or more up to 16). 1368 136920080420: 1370 The 802.11 wireless support was redone to enable multi-bss 1371 operation on devices that are capable. The underlying device 1372 is no longer used directly but instead wlanX devices are 1373 cloned with ifconfig. This requires changes to rc.conf files. 1374 For example, change: 1375 ifconfig_ath0="WPA DHCP" 1376 to 1377 wlans_ath0=wlan0 1378 ifconfig_wlan0="WPA DHCP" 1379 see rc.conf(5) for more details. In addition, mergemaster of 1380 /etc/rc.d is highly recommended. Simultaneous update of userland 1381 and kernel wouldn't hurt either. 1382 1383 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta 1384 modules were merged into the base wlan module. All references 1385 to these modules (e.g. in kernel config files) must be removed. 1386 138720080408: 1388 psm(4) has gained write(2) support in native operation level. 1389 Arbitrary commands can be written to /dev/psm%d and status can 1390 be read back from it. Therefore, an application is responsible 1391 for status validation and error recovery. It is a no-op in 1392 other operation levels. 1393 139420080312: 1395 Support for KSE threading has been removed from the kernel. To 1396 run legacy applications linked against KSE libmap.conf may 1397 be used. The following libmap.conf may be used to ensure 1398 compatibility with any prior release: 1399 1400 libpthread.so.1 libthr.so.1 1401 libpthread.so.2 libthr.so.2 1402 libkse.so.3 libthr.so.3 1403 140420080301: 1405 The layout of struct vmspace has changed. This affects libkvm 1406 and any executables that link against libkvm and use the 1407 kvm_getprocs() function. In particular, but not exclusively, 1408 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1). 1409 The effects are minimal, but it's advisable to upgrade world 1410 nonetheless. 1411 141220080229: 1413 The latest em driver no longer has support in it for the 1414 82575 adapter, this is now moved to the igb driver. The 1415 split was done to make new features that are incompatible 1416 with older hardware easier to do. 1417 141820080220: 1419 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4), 1420 likewise the kernel option is now GEOM_LINUX_LVM. 1421 142220080211: 1423 The default NFS mount mode has changed from UDP to TCP for 1424 increased reliability. If you rely on (insecurely) NFS 1425 mounting across a firewall you may need to update your 1426 firewall rules. 1427 142820080208: 1429 Belatedly note the addition of m_collapse for compacting 1430 mbuf chains. 1431 143220080126: 1433 The fts(3) structures have been changed to use adequate 1434 integer types for their members and so to be able to cope 1435 with huge file trees. The old fts(3) ABI is preserved 1436 through symbol versioning in libc, so third-party binaries 1437 using fts(3) should still work, although they will not take 1438 advantage of the extended types. At the same time, some 1439 third-party software might fail to build after this change 1440 due to unportable assumptions made in its source code about 1441 fts(3) structure members. Such software should be fixed 1442 by its vendor or, in the worst case, in the ports tree. 1443 FreeBSD_version 800015 marks this change for the unlikely 1444 case that a portable fix is impossible. 1445 144620080123: 1447 To upgrade to -current after this date, you must be running 1448 FreeBSD not older than 6.0-RELEASE. Upgrading to -current 1449 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems. 1450 145120071128: 1452 The ADAPTIVE_GIANT kernel option has been retired because its 1453 functionality is the default now. 1454 145520071118: 1456 The AT keyboard emulation of sunkbd(4) has been turned on 1457 by default. In order to make the special symbols of the Sun 1458 keyboards driven by sunkbd(4) work under X these now have 1459 to be configured the same way as Sun USB keyboards driven 1460 by ukbd(4) (which also does AT keyboard emulation), f.e.: 1461 1462 Option "XkbLayout" "us" 1463 Option "XkbRules" "xorg" 1464 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us" 1465 146620071024: 1467 It has been decided that it is desirable to provide ABI 1468 backwards compatibility to the FreeBSD 4/5/6 versions of the 1469 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was 1470 broken with the introduction of PCI domain support (see the 1471 20070930 entry). Unfortunately, this required the ABI of 1472 PCIOCGETCONF to be broken again in order to be able to 1473 provide backwards compatibility to the old version of that 1474 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled 1475 again. As for prominent ports this affects neither pciutils 1476 nor xorg-server this time, the hal port needs to be rebuilt 1477 however. 1478 147920071020: 1480 The misnamed kthread_create() and friends have been renamed 1481 to kproc_create() etc. Many of the callers already 1482 used kproc_start().. 1483 I will return kthread_create() and friends in a while 1484 with implementations that actually create threads, not procs. 1485 Renaming corresponds with version 800002. 1486 148720071010: 1488 RELENG_7 branched. 1489 1490COMMON ITEMS: 1491 1492 General Notes 1493 ------------- 1494 Avoid using make -j when upgrading. While generally safe, there are 1495 sometimes problems using -j to upgrade. If your upgrade fails with 1496 -j, please try again without -j. From time to time in the past there 1497 have been problems using -j with buildworld and/or installworld. This 1498 is especially true when upgrading between "distant" versions (eg one 1499 that cross a major release boundary or several minor releases, or when 1500 several months have passed on the -current branch). 1501 1502 Sometimes, obscure build problems are the result of environment 1503 poisoning. This can happen because the make utility reads its 1504 environment when searching for values for global variables. To run 1505 your build attempts in an "environmental clean room", prefix all make 1506 commands with 'env -i '. See the env(1) manual page for more details. 1507 1508 When upgrading from one major version to another it is generally best 1509 to upgrade to the latest code in the currently installed branch first, 1510 then do an upgrade to the new branch. This is the best-tested upgrade 1511 path, and has the highest probability of being successful. Please try 1512 this approach before reporting problems with a major version upgrade. 1513 1514 ZFS notes 1515 --------- 1516 When upgrading the boot ZFS pool to a new version, always follow 1517 these two steps: 1518 1519 1.) recompile and reinstall the ZFS boot loader and boot block 1520 (this is part of "make buildworld" and "make installworld") 1521 1522 2.) update the ZFS boot block on your boot drive 1523 1524 The following example updates the ZFS boot block on the first 1525 partition (freebsd-boot) of a GPT partitioned drive ad0: 1526 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0" 1527 1528 Non-boot pools do not need these updates. 1529 1530 To build a kernel 1531 ----------------- 1532 If you are updating from a prior version of FreeBSD (even one just 1533 a few days old), you should follow this procedure. It is the most 1534 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld, 1535 1536 make kernel-toolchain 1537 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE 1538 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE 1539 1540 To test a kernel once 1541 --------------------- 1542 If you just want to boot a kernel once (because you are not sure 1543 if it works, or if you want to boot a known bad kernel to provide 1544 debugging information) run 1545 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel 1546 nextboot -k testkernel 1547 1548 To just build a kernel when you know that it won't mess you up 1549 -------------------------------------------------------------- 1550 This assumes you are already running a CURRENT system. Replace 1551 ${arch} with the architecture of your machine (e.g. "i386", 1552 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc). 1553 1554 cd src/sys/${arch}/conf 1555 config KERNEL_NAME_HERE 1556 cd ../compile/KERNEL_NAME_HERE 1557 make depend 1558 make 1559 make install 1560 1561 If this fails, go to the "To build a kernel" section. 1562 1563 To rebuild everything and install it on the current system. 1564 ----------------------------------------------------------- 1565 # Note: sometimes if you are running current you gotta do more than 1566 # is listed here if you are upgrading from a really old current. 1567 1568 <make sure you have good level 0 dumps> 1569 make buildworld 1570 make kernel KERNCONF=YOUR_KERNEL_HERE 1571 [1] 1572 <reboot in single user> [3] 1573 mergemaster -p [5] 1574 make installworld 1575 mergemaster -i [4] 1576 make delete-old [6] 1577 <reboot> 1578 1579 1580 To cross-install current onto a separate partition 1581 -------------------------------------------------- 1582 # In this approach we use a separate partition to hold 1583 # current's root, 'usr', and 'var' directories. A partition 1584 # holding "/", "/usr" and "/var" should be about 2GB in 1585 # size. 1586 1587 <make sure you have good level 0 dumps> 1588 <boot into -stable> 1589 make buildworld 1590 make buildkernel KERNCONF=YOUR_KERNEL_HERE 1591 <maybe newfs current's root partition> 1592 <mount current's root partition on directory ${CURRENT_ROOT}> 1593 make installworld DESTDIR=${CURRENT_ROOT} 1594 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd 1595 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT} 1596 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd 1597 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition> 1598 <reboot into current> 1599 <do a "native" rebuild/install as described in the previous section> 1600 <maybe install compatibility libraries from ports/misc/compat*> 1601 <reboot> 1602 1603 1604 To upgrade in-place from stable to current 1605 ---------------------------------------------- 1606 <make sure you have good level 0 dumps> 1607 make buildworld [9] 1608 make kernel KERNCONF=YOUR_KERNEL_HERE [8] 1609 [1] 1610 <reboot in single user> [3] 1611 mergemaster -p [5] 1612 make installworld 1613 mergemaster -i [4] 1614 make delete-old [6] 1615 <reboot> 1616 1617 Make sure that you've read the UPDATING file to understand the 1618 tweaks to various things you need. At this point in the life 1619 cycle of current, things change often and you are on your own 1620 to cope. The defaults can also change, so please read ALL of 1621 the UPDATING entries. 1622 1623 Also, if you are tracking -current, you must be subscribed to 1624 freebsd-current@freebsd.org. Make sure that before you update 1625 your sources that you have read and understood all the recent 1626 messages there. If in doubt, please track -stable which has 1627 much fewer pitfalls. 1628 1629 [1] If you have third party modules, such as vmware, you 1630 should disable them at this point so they don't crash your 1631 system on reboot. 1632 1633 [3] From the bootblocks, boot -s, and then do 1634 fsck -p 1635 mount -u / 1636 mount -a 1637 cd src 1638 adjkerntz -i # if CMOS is wall time 1639 Also, when doing a major release upgrade, it is required that 1640 you boot into single user mode to do the installworld. 1641 1642 [4] Note: This step is non-optional. Failure to do this step 1643 can result in a significant reduction in the functionality of the 1644 system. Attempting to do it by hand is not recommended and those 1645 that pursue this avenue should read this file carefully, as well 1646 as the archives of freebsd-current and freebsd-hackers mailing lists 1647 for potential gotchas. The -U option is also useful to consider. 1648 See mergemaster(8) for more information. 1649 1650 [5] Usually this step is a noop. However, from time to time 1651 you may need to do this if you get unknown user in the following 1652 step. It never hurts to do it all the time. You may need to 1653 install a new mergemaster (cd src/usr.sbin/mergemaster && make 1654 install) after the buildworld before this step if you last updated 1655 from current before 20020224 or from -stable before 20020408. 1656 1657 [6] This only deletes old files and directories. Old libraries 1658 can be deleted by "make delete-old-libs", but you have to make 1659 sure that no program is using those libraries anymore. 1660 1661 [8] In order to have a kernel that can run the 4.x binaries needed to 1662 do an installworld, you must include the COMPAT_FREEBSD4 option in 1663 your kernel. Failure to do so may leave you with a system that is 1664 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is 1665 required to run the 5.x binaries on more recent kernels. And so on 1666 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7. 1667 1668 Make sure that you merge any new devices from GENERIC since the 1669 last time you updated your kernel config file. 1670 1671 [9] When checking out sources, you must include the -P flag to have 1672 cvs prune empty directories. 1673 1674 If CPUTYPE is defined in your /etc/make.conf, make sure to use the 1675 "?=" instead of the "=" assignment operator, so that buildworld can 1676 override the CPUTYPE if it needs to. 1677 1678 MAKEOBJDIRPREFIX must be defined in an environment variable, and 1679 not on the command line, or in /etc/make.conf. buildworld will 1680 warn if it is improperly defined. 1681FORMAT: 1682 1683This file contains a list, in reverse chronological order, of major 1684breakages in tracking -current. It is not guaranteed to be a complete 1685list of such breakages, and only contains entries since October 10, 2007. 1686If you need to see UPDATING entries from before that date, you will need 1687to fetch an UPDATING file from an older FreeBSD release. 1688 1689Copyright information: 1690 1691Copyright 1998-2009 M. Warner Losh. All Rights Reserved. 1692 1693Redistribution, publication, translation and use, with or without 1694modification, in full or in part, in any form or format of this 1695document are permitted without further permission from the author. 1696 1697THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR 1698IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 1699WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 1700DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT, 1701INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 1702(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 1703SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 1704HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 1705STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 1706IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 1707POSSIBILITY OF SUCH DAMAGE. 1708 1709Contact Warner Losh if you have any questions about your use of 1710this document. 1711 1712$FreeBSD: head/UPDATING 242624 2012-11-05 19:08:18Z brooks $ 1713