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23 2420050415: 25 The NO_MIXED_MODE kernel option has been removed from the i386 26 amd64 platforms as its use has been superceded by the new local 27 APIC timer code. Any kernel config files containing this option 28 should be updated. 29 3020050227: 31 The on-disk format of LC_CTYPE files was changed to be machine 32 independent. Please make sure NOT to use NO_CLEAN buildworld 33 when crossing this point. 34 3520050225: 36 The ifi_epoch member of struct if_data has been changed to 37 contain the uptime at which the interface was created or the 38 statistics zeroed rather then the wall clock time because 39 wallclock time may go backwards. This should have no impact 40 unless an snmp implementation is using this value (I know of 41 none at this point.) 42 4320050224: 44 The acpi_perf and acpi_throttle drivers are now part of the 45 acpi(4) main module. They are no longer built separately. 46 4720050223: 48 The layout of struct image_params has changed. You have to 49 recompile all compatibility modules (linux, svr4, etc) for use 50 with the new kernel. 51 5220050223: 53 The p4tcc driver has been merged into cpufreq(4). This makes 54 "options CPU_ENABLE_TCC" obsolete. Please load cpufreq.ko or 55 compile in "device cpufreq" to restore this functionality. 56 5720050220: 58 The responsibility of recomputing the file system summary of 59 a SoftUpdates-enabled dirty volume has been transferred to the 60 background fsck. A rebuild of fsck(8) utility is recommended 61 if you have updated the kernel. 62 63 To get the old behavior (recompute file system summary at mount 64 time), you can set vfs.ffs.compute_summary_at_mount=1 before 65 mounting the new volume. 66 6720050206: 68 The cpufreq import is complete. As part of this, the sysctls for 69 acpi(4) throttling have been removed. The power_profile script 70 has been updated, so you can use performance/economy_cpu_freq in 71 rc.conf(5) to set AC on/offline cpu frequencies. 72 7320050206: 74 NG_VERSION has been increased. Recompiling kernel (or ng_socket.ko) 75 requires recompiling libnetgraph and userland netgraph utilities. 76 7720050114: 78 Support for abbreviated forms of a number of ipfw options is 79 now deprecated. Warnings are printed to stderr indicating the 80 correct full form when a match occurs. Some abbreviations may 81 be supported at a later date based on user feedback. To be 82 considered for support, abbreviations must be in use prior to 83 this commit and unlikely to be confused with current key words. 84 8520041221: 86 By a popular demand, a lot of NOFOO options were renamed 87 to NO_FOO (see bsd.compat.mk for a full list). The old 88 spellings are still supported, but will cause annoying 89 warnings on stderr. Make sure you upgrade properly (see 90 the COMMON ITEMS: section later in this file). 91 9220041219: 93 Auto-loading of ancillary wlan modules such as wlan_wep has 94 been temporarily disabled; you need to statically configure 95 the modules you need into your kernel or explicitly load them 96 prior to use. Specifically, if you intend to use WEP encryption 97 with an 802.11 device load/configure wlan_wep; if you want to 98 use WPA with the ath driver load/configure wlan_tkip, wlan_ccmp, 99 and wlan_xauth as required. 100 10120041213: 102 The behaviour of ppp(8) has changed slightly. If lqr is enabled 103 (``enable lqr''), older versions would revert to LCP ECHO mode on 104 negotiation failure. Now, ``enable echo'' is required for this 105 behaviour. The ppp version number has been bumped to 3.4.2 to 106 reflect the change. 107 10820041201: 109 The wlan support has been updated to split the crypto support 110 into separate modules. For static WEP you must configure the 111 wlan_wep module in your system or build and install the module 112 in place where it can be loaded (the kernel will auto-load 113 the module when a wep key is configured). 114 11520041201: 116 The ath driver has been updated to split the tx rate control 117 algorithm into a separate module. You need to include either 118 ath_rate_onoe or ath_rate_amrr when configuring the kernel. 119 12020041116: 121 Support for systems with an 80386 CPU has been removed. Please 122 use FreeBSD 5.x or earlier on systems with an 80386. 123 12420041110: 125 We have had a hack which would mount the root filesystem 126 R/W if the device were named 'md*'. As part of the vnode 127 work I'm doing I have had to remove this hack. People 128 building systems which use preloaded MD root filesystems 129 may need to insert a "/sbin/mount -u -o rw /dev/md0 /" in 130 their /etc/rc scripts. 131 13220041104: 133 FreeBSD 5.3 shipped here. 134 13520041102: 136 The size of struct tcpcb has changed again due to the removal 137 of RFC1644 T/TCP. You have to recompile userland programs that 138 read kmem for tcp sockets directly (netstat, sockstat, etc.) 139 14020041022: 141 The size of struct tcpcb has changed. You have to recompile 142 userland programs that read kmem for tcp sockets directly 143 (netstat, sockstat, etc.) 144 14520041016: 146 RELENG_5 branched here. For older entries, please see updating 147 in the RELENG_5 branch. 148 149COMMON ITEMS: 150 151 General Notes 152 ------------- 153 Avoid using make -j when upgrading. From time to time in the 154 past there have been problems using -j with buildworld and/or 155 installworld. This is especially true when upgrading between 156 "distant" versions (eg one that cross a major release boundary 157 or several minor releases, or when several months have passed 158 on the -current branch). 159 160 Sometimes, obscure build problems are the result of environment 161 poisoning. This can happen because the make utility reads its 162 environment when searching for values for global variables. 163 To run your build attempts in an "environmental clean room", 164 prefix all make commands with 'env -i '. See the env(1) manual 165 page for more details. 166 167 To build a kernel 168 ----------------- 169 If you are updating from a prior version of FreeBSD (even one just 170 a few days old), you should follow this procedure. With a 171 /usr/obj tree with a fresh buildworld, 172 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE 173 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE 174 175 To just build a kernel when you know that it won't mess you up 176 -------------------------------------------------------------- 177 This assumes you are already running a 5.X system. Replace 178 ${arch} with the architecture of your machine (e.g. "i386", 179 "alpha", "amd64", "ia64", "pc98", "sparc64", etc). 180 181 cd src/sys/${arch}/conf 182 config KERNEL_NAME_HERE 183 cd ../compile/KERNEL_NAME_HERE 184 make depend 185 make 186 make install 187 188 If this fails, go to the "To build a kernel" section. 189 190 To rebuild everything and install it on the current system. 191 ----------------------------------------------------------- 192 # Note: sometimes if you are running current you gotta do more than 193 # is listed here if you are upgrading from a really old current. 194 195 <make sure you have good level 0 dumps> 196 <maybe fix /etc/fstab> [7] 197 make buildworld 198 make kernel KERNCONF=YOUR_KERNEL_HERE 199 [1] 200 <reboot in single user> [3] 201 src/etc/rc.d/preseedrandom [10] 202 mergemaster -p [5] 203 make installworld 204 mergemaster [4] 205 <reboot> 206 207 208 To cross-install current onto a separate partition 209 -------------------------------------------------- 210 # In this approach we use a separate partition to hold 211 # current's root, 'usr', and 'var' directories. A partition 212 # holding "/", "/usr" and "/var" should be about 2GB in 213 # size. 214 215 <make sure you have good level 0 dumps> 216 <boot into -stable> 217 make buildworld 218 make buildkernel KERNCONF=YOUR_KERNEL_HERE 219 <maybe newfs current's root partition> 220 <mount current's root partition on directory ${CURRENT_ROOT}> 221 make installworld DESTDIR=${CURRENT_ROOT} 222 cd src/etc; make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd 223 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT} 224 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd 225 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition> 226 <reboot into current> 227 <do a "native" rebuild/install as described in the previous section> 228 <maybe install compatibility libraries from src/lib/compat> 229 <reboot> 230 231 232 To upgrade in-place from 5.x-stable to current 233 ---------------------------------------------- 234 <make sure you have good level 0 dumps> 235 make buildworld [9] 236 make kernel KERNCONF=YOUR_KERNEL_HERE [8] 237 [1] 238 <reboot in single user> [3] 239 mergemaster -p [5] 240 make installworld 241 mergemaster -i [4] 242 <reboot> 243 244 Make sure that you've read the UPDATING file to understand the 245 tweaks to various things you need. At this point in the life 246 cycle of current, things change often and you are on your own 247 to cope. The defaults can also change, so please read ALL of 248 the UPDATING entries. 249 250 Also, if you are tracking -current, you must be subscribed to 251 freebsd-current@freebsd.org. Make sure that before you update 252 your sources that you have read and understood all the recent 253 messages there. If in doubt, please track -stable which has 254 much fewer pitfalls. 255 256 [1] If you have third party modules, such as vmware, you 257 should disable them at this point so they don't crash your 258 system on reboot. 259 260 [3] From the bootblocks, boot -s, and then do 261 fsck -p 262 mount -u / 263 mount -a 264 cd src 265 adjkerntz -i # if CMOS is wall time 266 Also, when doing a major release upgrade, it is required that 267 you boot into single user mode to do the installworld. 268 269 [4] Note: This step is non-optional. Failure to do this step 270 can result in a significant reduction in the functionality of the 271 system. Attempting to do it by hand is not recommended and those 272 that pursue this avenue should read this file carefully, as well 273 as the archives of freebsd-current and freebsd-hackers mailing lists 274 for potential gotchas. 275 276 [5] Usually this step is a noop. However, from time to time 277 you may need to do this if you get unknown user in the following 278 step. It never hurts to do it all the time. You may need to 279 install a new mergemaster (cd src/usr.sbin/mergemaster && make 280 install) after the buildworld before this step if you last updated 281 from current before 20020224 or from -stable before 20020408. 282 283 [8] In order to have a kernel that can run the 4.x binaries 284 needed to do an installworld, you must include the COMPAT_FREEBSD4 285 option in your kernel. Failure to do so may leave you with a system 286 that is hard to boot to recover. 287 288 Make sure that you merge any new devices from GENERIC since the 289 last time you updated your kernel config file. 290 291 [9] When checking out sources, you must include the -P flag to have 292 cvs prune empty directories. 293 294 If CPUTYPE is defined in your /etc/make.conf, make sure to use the 295 "?=" instead of the "=" assignment operator, so that buildworld can 296 override the CPUTYPE if it needs to. 297 298 MAKEOBJDIRPREFIX must be defined in an environment variable, and 299 not on the command line, or in /etc/make.conf. buildworld will 300 warn if it is improperly defined. 301FORMAT: 302 303This file contains a list, in reverse chronological order, of major 304breakages in tracking -current. Not all things will be listed here, 305and it only starts on October 16, 2004. Updating files can found in 306previous releases if your system is older than this. 307 308Copyright information: 309 310Copyright 1998-2005 M. Warner Losh. All Rights Reserved. 311 312Redistribution, publication, translation and use, with or without 313modification, in full or in part, in any form or format of this 314document are permitted without further permission from the author. 315 316THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR 317IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 318WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 319DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT, 320INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 321(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 322SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 323HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 324STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 325IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 326POSSIBILITY OF SUCH DAMAGE. 327 328If you find this document useful, and you want to, you may buy the 329author a beer. 330 331Contact Warner Losh if you have any questions about your use of 332this document. 333 334$FreeBSD$ 335