Just confirmed that when I reboot following a boot with network-acquired time, the next boot (with no network cable) does not keep real-time between boots. It simply starts with the most recent time from the last boot.
On Fri, Nov 12, 2021 at 1:55 PM Rob Kossler <rkoss...@nd.edu> wrote: > By the way, I just removed my working SD card from the E310 and inserted > it in my host (Ubuntu 20.04) SD card reader and issued the "umount" > commands. Nothing else. When I reinserted into the E310, boot issue > appears (fsck fails for /data and thus won't mount and puts me in some > maintenance mode). > Rob > > On Fri, Nov 12, 2021 at 1:49 PM Rob Kossler <rkoss...@nd.edu> wrote: > >> On Fri, Nov 12, 2021 at 1:17 PM Marcus D. Leech <patchvonbr...@gmail.com> >> wrote: >> >>> On 2021-11-12 13:14, Rob Kossler wrote: >>> >>> >>>> >>> I will try soon, but such experiments are "expensive" because when it >>> fails I have to re-burn the file system and then reconfigure stuff >>> afterwords since I don't know how to recover from the issue. My guess was >>> that either the mount or the eject was writing a date (perhaps an >>> "accessed" date in some metadata) that was much in the future relative to >>> the file system "Aug 6 2021" date that it gets and somehow this date >>> mismatch was causing the fsck failure. But I am not knowledgeable on >>> this. >>> >>> Regarding your NTPD comment, perhaps it isn't accessing any RTC. >>> Perhaps it is storing the time in the file system somewhere such that it >>> can access it on next boot? >>> >>> Your comments indicated the resulting time after reboot in this case was >>> *correct*, which would mean that something would have to be "keeping time" >>> across the >>> reboot. Or did you mean just that the time after reboot, without the >>> network cable connected, but with NTPD turned on, was "closer" to correct >>> than without? >>> >> >> You're right. I just meant that it was today's date on reboot. I didn't >> check to see if it was actually keeping time in between. It would have >> only been a few seconds anyway. >> >
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