FreeBSD Major/Minor Version Upgrades

Last year at some point I installed FreeBSD 10.2-RELEASE on an old i686 computer. In the time between now and then, there was a 10.3 minor release as well as an 11.0 major release. I am not in a hurry to get to FreeBSD 11.0-RELEASE yet, but I thought it was time to make the minor version upgrade to 10.3-RELEASE. Fortunately, upgrading FreeBSD is an easy process.

The current version of FreeBSD installed on the machine is shown below.

root@bsdbox:~ # uname -a
FreeBSD bsdbox 10.2-RELEASE FreeBSD 10.2-RELEASE #0 r286666: Wed Aug 12 19:31:38 UTC 2015 root@releng1.nyi.freebsd.org:/usr/obj/usr/src/sys/GENERIC i386

To upgrade to the next minor version, use the freebsd-update command with the upgrade option and the release version.

root@bsdbox:~ # freebsd-update -r 10.3-RELEASE upgrade

Depending on your system, this command could take a while to run while it inspects the system. On this i686 machine, I just let the command run and came back after an hour or so to check on its progress.

Looking up update.FreeBSD.org mirrors… 4 mirrors found.
Fetching metadata signature for 10.2-RELEASE from update6.freebsd.org… done.
Fetching metadata index… done.
Fetching 1 metadata files… done.
Inspecting system…

The following components of FreeBSD seem to be installed:
kernel/generic src/src world/base

The following components of FreeBSD do not seem to be installed:
world/doc world/games

Does this look reasonable (y/n)?

After inspecting the system, the upgrade process is just making sure I am happy with the parts that will be upgraded. Enter “y” to continue, and then if you have an i686 machine, walk away and give it some time to fetch the updates.

Fetching metadata signature for 10.3-RELEASE from update6.freebsd.org… done.
Fetching metadata index… done.
Fetching 1 metadata patches. done.
Applying metadata patches… done.
Fetching 1 metadata files… done.
Inspecting system… done.
Fetching files from 10.2-RELEASE for merging… done.
Preparing to download files…
…(output truncated for the sake of sanity)…
590….39600….39610….39620….39630….39640….39650….39660….39670….39680….39690….39700….39710….39720….39730….39740….39750….39760….39770….39780….39790….39800….39810….39820….39830….39840….39850….39860….39870….39880….39890….39900….39910….39920….39930….39940….39950….39960….39970….39980….39990….40000….40010….40020….40030 done.
Applying patches… done.
Fetching 873 files… done.
Attempting to automatically merge changes in files… done.

The following file could not be merged automatically: /etc/ssh/ssh_config
Press Enter to edit this file in vi and resolve the conflicts
manually…

I had made some modifications to /etc/ssh/ssh_config on my baseline system, so rather than just overwriting the file, FreeBSD is offering me the opportunity to look at a diff of my original and the new version that FreeBSD needs to install. Luckily for me, I had just added one line, and I no longer needed it, so I edit out the changes and let FreeBSD move onward. Once you save the changes and exit out of the editor, the upgrade process continues.

…(truncated)…
/var/db/etcupdate/current/root/.k5login
/var/db/etcupdate/current/root/.login
/var/db/etcupdate/current/root/.profile
/var/db/etcupdate/log
/var/db/mergemaster.mtree
/var/yp/Makefile.dist
To install the downloaded upgrades, run “/usr/sbin/freebsd-update install”.

Excellent! The updates have been downloaded, my system has been examined, and all of the necessary modifications have been merged into the software to install. To initiate the actual install:

root@bsdbox:~ # freebsd-update install
Installing updates…
Kernel updates have been installed. Please reboot and run
“/usr/sbin/freebsd-update install” again to finish installing updates.

At this point, the system is ready to be rolled over to the next version of FreeBSD. Reboot the system:

root@bsdbox:~ # shutdown -r +1

Once the system comes back up, check out the version:

root@bsdbox:~ # uname -a
FreeBSD bsdbox 10.3-RELEASE-p11 FreeBSD 10.3-RELEASE-p11 #0: Mon Oct 24 18:47:18 UTC 2016 root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC i386

Nice! To finalize the install, run the freebsd-update command with the install option as directed in the output before the last system reboot.

root@bsdbox:~ # freebsd-update install

That is it, the system is now upgraded from FreeBSD 10.2 to 10.3! An upgrade to a major version is no different from the above, just specify the proper version. For example, to upgrade to FreeBSD 11.0:

root@bsdbox:~ # freebsd-update -r 11.0-RELEASE upgrade

Easy!

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