Power supply monitoring in Linux?

[Dan Jenkins]

Ben Scott wrote:
> On Nov 9, 2007 10:08 AM, Paul Lussier <p.lussier at comcast.net> wrote:
>   
>> We need to monitor it in the OS to detect the failure on one of the redundant
>> power supplies (it would be tough to detect the failure the second :)
>>     
>   Nonsense, that's *easy* to detect.  Kind of impacts availability, though.  ;-)
>   
Oddly enough I'm involved with a Linux-based project which needs to 
detect that the power has gone out, and, during the run-down of the 
capacitors, save the state of the system and then automatically resume 
when the power returns. Or just resume if the power is back before the 
caps run out. No batteries allowed. Typically power will be off for a 
few seconds to half a minute. So, while the actual power off does impact 
availability, not as much as you'd think. Though this is different than 
the power supply itself failing. That would crimp things a bit. :-)

-- 
Dan Jenkins (dan at rastech.com)
Rastech Inc., Bedford, NH, USA --- 1-603-206-9951
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