1Updating Information for FreeBSD current users 2 3This file is maintained and copyrighted by M. Warner Losh 4<imp@village.org>. See end of file for further details. For commonly 5done items, please see the COMMON ITEMS: section later in the file. 6 7Items affecting the ports and packages system can be found in 8/usr/ports/UPDATING. Please read that file before running 9portupgrade. 10 11NOTE TO PEOPLE WHO THINK THAT FreeBSD 6.x IS SLOW: 12 FreeBSD 6.x has many debugging features turned on, in 13 both the kernel and userland. These features attempt to detect 14 incorrect use of system primitives, and encourage loud failure 15 through extra sanity checking and fail stop semantics. They 16 also substantially impact system performance. If you want to 17 do performance measurement, benchmarking, and optimization, 18 you'll want to turn them off. This includes various WITNESS- 19 related kernel options, INVARIANTS, malloc debugging flags 20 in userland, and various verbose features in the kernel. Many 21 developers choose to disable these features on build machines 22 to maximize performance. 23 2420050610: 25 Major changes to network interface API. All drivers must be 26 recompiled. Drivers not in the base system will need to be 27 updated to the new APIs. 28 2920050609: 30 Changes were made to kinfo_proc in sys/user.h. Please recompile 31 userland, or commands like `fstat', `pkill', `ps', `top' and `w' 32 will not behave correctly. 33 34 The API and ABI for hwpmc(4) have changed with the addition 35 of sampling support. Please recompile lib/libpmc(3) and 36 usr.sbin/{pmcstat,pmccontrol}. 37 3820050606: 39 The OpenBSD dhclient was imported in place of the ISC dhclient 40 and the network interface configuration scripts were updated 41 accordingly. If you use DHCP to configure your interfaces, you 42 must now run devd. Also, DNS updating was lost so you will need 43 to find a workaround if you use this feature. 44 4520050605: 46 if_bridge was added to the tree. This has changed struct ifnet. 47 Please recompile userland and all network related modules. 48 4920050603: 50 The n_net of a struct netent was changed to an uint32_t, and 51 1st argument of getnetbyaddr() was changed to an uint32_t, to 52 conform to POSIX-2001. These changes broke an ABI 53 compatibility on 64 bit architecture. With these changes, 54 shlib major of libpcap was bumped. You have to recompile 55 userland programs that use getnetbyaddr(3), getnetbyname(3), 56 getnetent(3) and/or libpcap on 64 bit architecture. 57 5820050528: 59 Kernel parsing of extra options on '#!' first lines of shell 60 scripts has changed. Lines with multiple options likely will 61 fail after this date. For full details, please see 62 http://people.freebsd.org/~gad/Updating-20050528.txt 63 6420050503: 65 The packet filter (pf) code has been updated to OpenBSD 3.7 66 Please note the changed anchor syntax and the fact that 67 authpf(8) now needs a mounted fdescfs(5) to function. 68 6920050415: 70 The NO_MIXED_MODE kernel option has been removed from the i386 71 amd64 platforms as its use has been superceded by the new local 72 APIC timer code. Any kernel config files containing this option 73 should be updated. 74 7520050227: 76 The on-disk format of LC_CTYPE files was changed to be machine 77 independent. Please make sure NOT to use NO_CLEAN buildworld 78 when crossing this point. 79 8020050225: 81 The ifi_epoch member of struct if_data has been changed to 82 contain the uptime at which the interface was created or the 83 statistics zeroed rather then the wall clock time because 84 wallclock time may go backwards. This should have no impact 85 unless an snmp implementation is using this value (I know of 86 none at this point.) 87 8820050224: 89 The acpi_perf and acpi_throttle drivers are now part of the 90 acpi(4) main module. They are no longer built separately. 91 9220050223: 93 The layout of struct image_params has changed. You have to 94 recompile all compatibility modules (linux, svr4, etc) for use 95 with the new kernel. 96 9720050223: 98 The p4tcc driver has been merged into cpufreq(4). This makes 99 "options CPU_ENABLE_TCC" obsolete. Please load cpufreq.ko or 100 compile in "device cpufreq" to restore this functionality. 101 10220050220: 103 The responsibility of recomputing the file system summary of 104 a SoftUpdates-enabled dirty volume has been transferred to the 105 background fsck. A rebuild of fsck(8) utility is recommended 106 if you have updated the kernel. 107 108 To get the old behavior (recompute file system summary at mount 109 time), you can set vfs.ffs.compute_summary_at_mount=1 before 110 mounting the new volume. 111 11220050206: 113 The cpufreq import is complete. As part of this, the sysctls for 114 acpi(4) throttling have been removed. The power_profile script 115 has been updated, so you can use performance/economy_cpu_freq in 116 rc.conf(5) to set AC on/offline cpu frequencies. 117 11820050206: 119 NG_VERSION has been increased. Recompiling kernel (or ng_socket.ko) 120 requires recompiling libnetgraph and userland netgraph utilities. 121 12220050114: 123 Support for abbreviated forms of a number of ipfw options is 124 now deprecated. Warnings are printed to stderr indicating the 125 correct full form when a match occurs. Some abbreviations may 126 be supported at a later date based on user feedback. To be 127 considered for support, abbreviations must be in use prior to 128 this commit and unlikely to be confused with current key words. 129 13020041221: 131 By a popular demand, a lot of NOFOO options were renamed 132 to NO_FOO (see bsd.compat.mk for a full list). The old 133 spellings are still supported, but will cause annoying 134 warnings on stderr. Make sure you upgrade properly (see 135 the COMMON ITEMS: section later in this file). 136 13720041219: 138 Auto-loading of ancillary wlan modules such as wlan_wep has 139 been temporarily disabled; you need to statically configure 140 the modules you need into your kernel or explicitly load them 141 prior to use. Specifically, if you intend to use WEP encryption 142 with an 802.11 device load/configure wlan_wep; if you want to 143 use WPA with the ath driver load/configure wlan_tkip, wlan_ccmp, 144 and wlan_xauth as required. 145 14620041213: 147 The behaviour of ppp(8) has changed slightly. If lqr is enabled 148 (``enable lqr''), older versions would revert to LCP ECHO mode on 149 negotiation failure. Now, ``enable echo'' is required for this 150 behaviour. The ppp version number has been bumped to 3.4.2 to 151 reflect the change. 152 15320041201: 154 The wlan support has been updated to split the crypto support 155 into separate modules. For static WEP you must configure the 156 wlan_wep module in your system or build and install the module 157 in place where it can be loaded (the kernel will auto-load 158 the module when a wep key is configured). 159 16020041201: 161 The ath driver has been updated to split the tx rate control 162 algorithm into a separate module. You need to include either 163 ath_rate_onoe or ath_rate_amrr when configuring the kernel. 164 16520041116: 166 Support for systems with an 80386 CPU has been removed. Please 167 use FreeBSD 5.x or earlier on systems with an 80386. 168 16920041110: 170 We have had a hack which would mount the root filesystem 171 R/W if the device were named 'md*'. As part of the vnode 172 work I'm doing I have had to remove this hack. People 173 building systems which use preloaded MD root filesystems 174 may need to insert a "/sbin/mount -u -o rw /dev/md0 /" in 175 their /etc/rc scripts. 176 17720041104: 178 FreeBSD 5.3 shipped here. 179 18020041102: 181 The size of struct tcpcb has changed again due to the removal 182 of RFC1644 T/TCP. You have to recompile userland programs that 183 read kmem for tcp sockets directly (netstat, sockstat, etc.) 184 18520041022: 186 The size of struct tcpcb has changed. You have to recompile 187 userland programs that read kmem for tcp sockets directly 188 (netstat, sockstat, etc.) 189 19020041016: 191 RELENG_5 branched here. For older entries, please see updating 192 in the RELENG_5 branch. 193 194COMMON ITEMS: 195 196 General Notes 197 ------------- 198 Avoid using make -j when upgrading. From time to time in the 199 past there have been problems using -j with buildworld and/or 200 installworld. This is especially true when upgrading between 201 "distant" versions (eg one that cross a major release boundary 202 or several minor releases, or when several months have passed 203 on the -current branch). 204 205 Sometimes, obscure build problems are the result of environment 206 poisoning. This can happen because the make utility reads its 207 environment when searching for values for global variables. 208 To run your build attempts in an "environmental clean room", 209 prefix all make commands with 'env -i '. See the env(1) manual 210 page for more details. 211 212 To build a kernel 213 ----------------- 214 If you are updating from a prior version of FreeBSD (even one just 215 a few days old), you should follow this procedure. With a 216 /usr/obj tree with a fresh buildworld, 217 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE 218 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE 219 220 To test a kernel once 221 --------------------- 222 If you just want to boot a kernel once (because you are not sure 223 if it works, or if you want to boot a known bad kernel to provide 224 debugging information) run 225 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel 226 nextboot -k testkernel 227 228 To just build a kernel when you know that it won't mess you up 229 -------------------------------------------------------------- 230 This assumes you are already running a 5.X system. Replace 231 ${arch} with the architecture of your machine (e.g. "i386", 232 "alpha", "amd64", "ia64", "pc98", "sparc64", etc). 233 234 cd src/sys/${arch}/conf 235 config KERNEL_NAME_HERE 236 cd ../compile/KERNEL_NAME_HERE 237 make depend 238 make 239 make install 240 241 If this fails, go to the "To build a kernel" section. 242 243 To rebuild everything and install it on the current system. 244 ----------------------------------------------------------- 245 # Note: sometimes if you are running current you gotta do more than 246 # is listed here if you are upgrading from a really old current. 247 248 <make sure you have good level 0 dumps> 249 make buildworld 250 make kernel KERNCONF=YOUR_KERNEL_HERE 251 [1] 252 <reboot in single user> [3] 253 mergemaster -p [5] 254 make installworld 255 mergemaster [4] 256 <reboot> 257 258 259 To cross-install current onto a separate partition 260 -------------------------------------------------- 261 # In this approach we use a separate partition to hold 262 # current's root, 'usr', and 'var' directories. A partition 263 # holding "/", "/usr" and "/var" should be about 2GB in 264 # size. 265 266 <make sure you have good level 0 dumps> 267 <boot into -stable> 268 make buildworld 269 make buildkernel KERNCONF=YOUR_KERNEL_HERE 270 <maybe newfs current's root partition> 271 <mount current's root partition on directory ${CURRENT_ROOT}> 272 make installworld DESTDIR=${CURRENT_ROOT} 273 cd src/etc; make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd 274 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT} 275 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd 276 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition> 277 <reboot into current> 278 <do a "native" rebuild/install as described in the previous section> 279 <maybe install compatibility libraries from src/lib/compat> 280 <reboot> 281 282 283 To upgrade in-place from 5.x-stable to current 284 ---------------------------------------------- 285 <make sure you have good level 0 dumps> 286 make buildworld [9] 287 make kernel KERNCONF=YOUR_KERNEL_HERE [8] 288 [1] 289 <reboot in single user> [3] 290 mergemaster -p [5] 291 make installworld 292 mergemaster -i [4] 293 <reboot> 294 295 Make sure that you've read the UPDATING file to understand the 296 tweaks to various things you need. At this point in the life 297 cycle of current, things change often and you are on your own 298 to cope. The defaults can also change, so please read ALL of 299 the UPDATING entries. 300 301 Also, if you are tracking -current, you must be subscribed to 302 freebsd-current@freebsd.org. Make sure that before you update 303 your sources that you have read and understood all the recent 304 messages there. If in doubt, please track -stable which has 305 much fewer pitfalls. 306 307 [1] If you have third party modules, such as vmware, you 308 should disable them at this point so they don't crash your 309 system on reboot. 310 311 [3] From the bootblocks, boot -s, and then do 312 fsck -p 313 mount -u / 314 mount -a 315 cd src 316 adjkerntz -i # if CMOS is wall time 317 Also, when doing a major release upgrade, it is required that 318 you boot into single user mode to do the installworld. 319 320 [4] Note: This step is non-optional. Failure to do this step 321 can result in a significant reduction in the functionality of the 322 system. Attempting to do it by hand is not recommended and those 323 that pursue this avenue should read this file carefully, as well 324 as the archives of freebsd-current and freebsd-hackers mailing lists 325 for potential gotchas. 326 327 [5] Usually this step is a noop. However, from time to time 328 you may need to do this if you get unknown user in the following 329 step. It never hurts to do it all the time. You may need to 330 install a new mergemaster (cd src/usr.sbin/mergemaster && make 331 install) after the buildworld before this step if you last updated 332 from current before 20020224 or from -stable before 20020408. 333 334 [8] In order to have a kernel that can run the 4.x binaries 335 needed to do an installworld, you must include the COMPAT_FREEBSD4 336 option in your kernel. Failure to do so may leave you with a system 337 that is hard to boot to recover. 338 339 Make sure that you merge any new devices from GENERIC since the 340 last time you updated your kernel config file. 341 342 [9] When checking out sources, you must include the -P flag to have 343 cvs prune empty directories. 344 345 If CPUTYPE is defined in your /etc/make.conf, make sure to use the 346 "?=" instead of the "=" assignment operator, so that buildworld can 347 override the CPUTYPE if it needs to. 348 349 MAKEOBJDIRPREFIX must be defined in an environment variable, and 350 not on the command line, or in /etc/make.conf. buildworld will 351 warn if it is improperly defined. 352FORMAT: 353 354This file contains a list, in reverse chronological order, of major 355breakages in tracking -current. Not all things will be listed here, 356and it only starts on October 16, 2004. Updating files can found in 357previous releases if your system is older than this. 358 359Copyright information: 360 361Copyright 1998-2005 M. Warner Losh. All Rights Reserved. 362 363Redistribution, publication, translation and use, with or without 364modification, in full or in part, in any form or format of this 365document are permitted without further permission from the author. 366 367THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR 368IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 369WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 370DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT, 371INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 372(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 373SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 374HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 375STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 376IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 377POSSIBILITY OF SUCH DAMAGE. 378 379If you find this document useful, and you want to, you may buy the 380author a beer. 381 382Contact Warner Losh if you have any questions about your use of 383this document. 384 385$FreeBSD$ 386