https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=292616
Bug ID: 292616
Summary: FreeBSD 14 to 15 upgrade reboot loop if watchdogd is
enabled
Product: Base System
Version: 15.0-RELEASE
Hardware: Any
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
Just as an FYI:
If watchdogd is enabled -- which it is NOT by default so the impact of this may
be low -- during a freebsd-upgrade from FreeBSD 14.x to 15.0, and you are
temporarily running the 15 kernel with the 14 userland... then watchdogd will
kick in and reboot before you can get far enough in the boot process to
actually install the 15 userland.
I suspect it's for similar reasons as the existing 15.0 errata about ipfw (bug
291562).
Workaround is similar and simple too: simply "sysrc watchdogd_enable=No" before
the upgrade and "sysrc watchdogd_enable=Yes" afterwards.
This bit me when upgrading some cloud servers a few weeks ago. Fortunately
they offered remote KVM so I was able to figure it out pretty fast, boot to
single user mode, and manually edit /etc/rc.conf to deal with both that and
ipfw.
This probably doesn't apply to pkgbase upgrades from 14.3 to 15.0, but then
there's an errata about that too. :)
I'm not necessarily looking for a fix here since there's an easy workaround and
it's a weird non-default config anyway -- it's more of an FYI in case anyone
else bumps into this.
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