Nut upsuser - Aug 2011 - APC Smart UPS at a Mac Mini

Hi,


I'm using a APC Smart UPS with a Mac Mini, connected using a USB serial
converter.
Works fine so far, the Mac Mini will be shut down, a NAS connected of the
network to the nut on Mac Mini will also shut down, perfect.

However, the ups will not be shut down. Very unfortunate, since the Mac will not
start again, if the power comes back before the batteries are completely empty.
I read about /etc/killpower and a may be required modification of the shutdown
script.
But there is no such script in Mac OS X Snow Leopard.

Can anyone help?



Thank you very much and cheers,
Wolfgang

On Mon, Aug 29, 2011 at 7:14 AM, Wolfgang Hottgenroth
<wolfgang at hottgenroth.net> wrote:
> I'm using a APC Smart UPS with a Mac Mini, connected using a USB serial
converter.
> Works fine so far, the Mac Mini will be shut down, a NAS connected of the
network to the nut on Mac Mini will also shut down, perfect.
>
> However, the ups will not be shut down. Very unfortunate, since the Mac
will not start again, if the power comes back before the batteries are
completely empty.
> I read about /etc/killpower and a may be required modification of the
shutdown script.
> But there is no such script in Mac OS X Snow Leopard.
I admit I haven't investigated the OS X shutdown sequence much - my
main OS X box is a laptop, and the Mac Mini isn't doing anything
critical.

I think that the built-in USB UPS support simply commands the UPS to
shut down after a delay. I think there's a potential race condition
there if the power comes back on as you described, but maybe the APC
UPSes avoid that by power-cycling the load if they have already been
commanded to shut down when the power returns.

Can you post your shutdown command, and the output of "upsc",
"upscmd
-l" and "upsrw" for that UPS? No need to include ups.serial if
you
don't want to post the serial number - I'm mainly interested in the
firmware version, NUT version, and what commands and variables are
detected as supported by the apcsmart driver.

Michal Soltys has made some improvements to the APC shutdown support
recently, so he might be able to offer some suggestions about using
the delayed shutdown feature with your hardware.

-- 
- Charles Lepple

Ah, okay, I noted that item and considered it when I connected the UPS the first
time to the Mac and was wondering why it does not comes up again after a power
failure test. But that's not my current problem: my current problem is: how
can I switch off the UPS once the shutdown process of the MAC OS X is done.

I found in a Debian installation for instance that there is a hook into the very
last /etc/init.d script (K90halt or something like that) which calls the ups
driver to send the shutdown command to the UPS. Now I'm looking for such a
hook on the Mac.

Cheers and thanks,
Wolfgang



Am 30.08.2011 um 17:44 schrieb Jerome BENOIT:
> 
> 
> On 30/08/11 16:06, Wolfgang Hottgenroth wrote:
>> I'm running Mac OS X. But I can't find my question answered in
the FAQ. Do you have a pointer into the FAQ for me, to the particular part where
you consider my question answered?
>> 
> 
> Point 18 :
> 
>
http://www.networkupstools.org/docs/FAQ.html#_my_mac_won_8217_t_power_back_up_by_itself_into_mac_os_x_after_the_ups_shuts_down_what_can_i_do_about_this
> 
>> Cheers,
>> Wolfgang
>> 
>> 
>> 
>> Am 30.08.2011 um 16:01 schrieb Jerome BENOIT:
>> 
>>> Hello Wolfgang:
>>> 
>>> if you run Mac OS X, you may find an answer in the FAQ;
>>> if you run Linux, you may check the mailing list archive
>>> as I post something a bout in March.
>>> 
>>> hth,
>>> Jerome
>>> 
>>> On 29/08/11 13:14, Wolfgang Hottgenroth wrote:
>>>> Hi,
>>>> 
>>>> 
>>>> I'm using a APC Smart UPS with a Mac Mini, connected using
a USB serial converter.
>>>> Works fine so far, the Mac Mini will be shut down, a NAS
connected of the network to the nut on Mac Mini will also shut down, perfect.
>>>> 
>>>> However, the ups will not be shut down. Very unfortunate, since
the Mac will not start again, if the power comes back before the batteries are
completely empty.
>>>> I read about /etc/killpower and a may be required modification
of the shutdown script.
>>>> But there is no such script in Mac OS X Snow Leopard.
>>>> 
>>>> Can anyone help?
>>>> 
>>>> 
>>>> 
>>>> Thank you very much and cheers,
>>>> Wolfgang
>>>> 
>>>> 
>>>> 
>>>> _______________________________________________
>>>> Nut-upsuser mailing list
>>>> Nut-upsuser at lists.alioth.debian.org
>>>>
http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/nut-upsuser
>>