This behaved differently some releases ago. Since then the BOOT kernel had been introduced and then because of /dev/random and the upgrade kernel (bsd.upgrade) write access was needed.
> On 14. Jan 2024, at 09:32, Alexander Hall <alexan...@beard.se> wrote: > > I don't have mine (EdgeRouter lite) running anymore, but IIRC, I had a cron > job poking the root fs to"resolve" this. > > Sth like "mkdir /bump && rmdir /bump && sync". > > /Alexander > > On January 12, 2024 2:35:47 PM GMT+01:00, Christian Gut <cycl...@is-root.org> > wrote: >> Hi, >> >> Could somebody point me to documentation or tell me where OpenBSD gets the >> time from, when the system has no RTC and ntpd is not working? >> >> I am using an EdgeRouter / octeon and at every reboot, the date/time gets >> reset to the exact same date. >> >> I tried to read the source code of boot(9) and inittodr(9). I can see, that >> there seems to be a fallback to some timestamp that comes from the >> filesystem. Maybe when the root filesystem is mounted as of ffs_mountroot() >> for example. But my understanding did not go so far to identify from which >> file, directory, superblock or other filesystem metadata the information >> really comes from. >> >> It seems to me, that either my system is broken or something on octeon does >> not work correctly for this fallback to happen correctly. >> >> Kind Regards, >> Christian >> >
