riello_ser driver does not support ondelay/offdelay

[Skarafaz]

Hi!

I'm monitoring a Riello NDG1500 with nut 2.7.4 (debian package) using riello_ser driver.
When I try to set ondelay/offdelay variables in ups.conf I get the error "variable not supported"; is this hardware related? I really need to set an off delay because my nas (a slave) takes about 5 minutes to shutdown. Thanks.

[clepple]

Per the protocol documentation, this should be supported by the hardware (NDG1500 uses the GPSER protocol): https://networkupstools.org/ups-protocols.html#_riello

However, it does not look like the driver implements any variables: https://github.com/networkupstools/nut/blob/v2.7.4/drivers/riello_ser.c#L758

[clepple]

The authors of the driver seem to have been working on a patch, but it stalled:

• https://alioth-lists.debian.net/pipermail/nut-upsdev/2018-February/007374.html
• https://alioth-lists.debian.net/pipermail/nut-upsdev/2018-March/007388.html

@CentroricercheRPS do you have a version of the patch with setvar?

[clepple]

@CentroricercheRPS Since the ups.delay.shutdown variable is sent at shutdown, and is not maintained in non-volatile memory on the UPS, @zykh's 2nd comment applies:

• if they don't set values in the device, but only in NUT, add (and
  document in riello_{ser,usb} man pages) corresponding options to be
  set in ups.conf (or using the -x var=value command line option),
  since the driver, when launched with the -k flag or through
  upsdrvctl shutdown, cannot be aware of any 'transient' change made
  previously.

[Skarafaz]

Thanks for the support @clepple!

[Skarafaz]

@clepple just in case... what is the right way to deal with slow slaves without offdelay? Should I increase FINALDELAY variable in upsmon.conf?