On 2/18/20 9:34 AM, Stefan Schulze wrote:
Hi Roger, Hi all,
Does upsmon.conf specify a shutdown on LB?
I think so. You mean SHUTDOWNCMD?
The relevant parts of my upsmon.conf (notifications removed):
MONITOR ups@localhost 1 upsmaster secret master
MINSUPPLIES 1
SHUTDOWNCMD "/sbin/shutdown -h +0"
POLLFREQ 5
POLLFREQALERT 2
HOSTSYNC 15
DEADTIME 40
POWERDOWNFLAG /etc/killpower
RBWARNTIME 43200
NOCOMMWARNTIME 1800
FINALDELAY 1
What happens if you let the battery power the system until LB is reached?
It's the same :-(
How old is this battery?
About half a year. But I already went into this issue some months before with
the 2.7.4 Raspbian package but havn't found the time to fix it.
8. Seconds later the UPS reboots, killing the RasPi
9. UPS and RasPi are up and running again - "OL CHRG"
The UPS is set to "offdelay=5" and no ondelay
What happens if you use the default values of offdelay=20 and ondelay=30
seconds, or longer?
With defaults its the same.
But I noticed two other details:
1. I was a bit wrong with step 7 and 8 - Looks like the UPS is "OL CHRG" (according to
display) at first but goes to battery ("OL DISCHRG" according to nut) right when the
RasPi (and nut) is booting.
2. When I pull the plug of the RasPi after UPS went down before main power comes back (so
between step 5 and 6), the UPS comes up in state "OL CHRG" and is stable.
Maybe nut is sending `upsdrvctl shutdown` right after boot again but without
shutting down the system or sending an notification? Is there a way to check
this reliably?
indeed if the battery is discharged and in the same time nut sees "OL
DISCHRG", nut might trigger a shutdown ( although, as far as I know,
this should happen only for "OB DISCHRG"). I'd like to understand _why_
does the DISCHRG flag appear when the UPS is actually online and
charging. this could be a firmware error ( the UPS sends incorrect data
) or nut incorrectly reading ( or interpreting ) the data it receives.
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