Nut upsuser - Mar 2018 - Tripp-Lite BCPERS450 shutdown/restart problems

On Jan 22, 2018, at 3:00 PM, Ken Olum <kdo at cosmos.phy.tufts.edu>
wrote:
> 
> I tested the effect of setting UPS.OutletSystem.Outlet.DelayBeforeShutdown
> using Tripp Lite's software, which appears to be as follows:
> 
Theoretically, this should be the same as running the command "upscmd
bcpers at localhost -u <upsd.user> load.off.delay <delay>".
> So if you could fix nut to use UPS.OutletSystem.Outlet.DelayBeforeShutdown
> in my case, or tell me how do it, I would appreciate that.
I still haven't had a good chunk of time to walk through the shutdown code
(the part that handles "usbhid-ups ... -k"), but in the mean time,
would you be interested in setting things up to rebuild the driver? (The next
week is looking pretty ridiculous for me, so I don't anticipate being able
to dust off my .deb build tree soon.)

My thought is that you can rebuild NUT with the same configuration options as
the .debs, and the usbhid-ups driver should just drop in. The instructions are
almost the same for Ubuntu as for Debian:

http://lists.alioth.debian.org/pipermail/nut-upsdev/2017-October/007341.html and

http://lists.alioth.debian.org/pipermail/nut-upsdev/2017-October/007343.html
(omit the "git checkout" line; although we have a new-and-improved
libusb branch, I think it's an unnecessary delta for your situation.)

From: Charles Lepple <clepple at gmail.com>
   Date: Tue, 23 Jan 2018 09:02:14 -0500

   On Jan 22, 2018, at 3:00 PM, Ken Olum <kdo at cosmos.phy.tufts.edu>
wrote:
   > 
   > I tested the effect of setting
UPS.OutletSystem.Outlet.DelayBeforeShutdown
   > using Tripp Lite's software, which appears to be as follows:
   > 
   Theoretically, this should be the same as running the command "upscmd
bcpers at localhost -u <upsd.user> load.off.delay <delay>".

It is.  And now I can see that it sets ups.timer.shutdown (as reported
by upsc) to the number that you give and that then counts down until the
shutdown.

But note that in spite of the words "outlet" and "load" in
the
descriptors, what this control actually does is to shut down the UPS,
not just the load.  So is the real problem here that the system has
somehow misidentified the UPS delayed shutdown control as the delayed
load-off control, and that's why it doesn't use it when you say
"usbhid-ups -k"?

   in the mean time, would you be interested in setting things up to
   rebuild the driver?

I was able to build it following your directions.  Some things went in
the same place as the Ubuntu packages had used, but others did not, so I
removed the Ubuntu packages, and installed from source.  Most things
seem to work, though "/lib/nut/usbhid-ups -a bcpers450 -k" now gets a
segfault instead of doing the (wrong) thing it did before.

                                        Ken

Hi, Charles.  Are you by any chance planning to address my problems
where NUT does not know how to schedule a shutdown of this Tripp-Lite
UPS?  If not, could you point me in the right direction?  My best
understanding of the situation of the moment is that the right control
is UPS.OutletSystem.Outlet.DelayBeforeShutdown but that NUT does not
know to use that.

Thanks.

                                        Ken