[Nut-upsdev] nut vs. ModemManager and device stealing

Michal Hlavinka mhlavink at redhat.com
Wed Jan 20 13:25:34 UTC 2010


Hi,

I'd like to know your opinion for bug 
http://bugzilla.redhat.com/show_bug.cgi?id=544121

Recently serial connected UPSes stopped working because ModemManager steals 
tty devices (it tries to open every tty device to check if there is modem 
sitting there), this means device is blocked for about 10 seconds. This 
prevents nut daemon to start. I've reassigned bug against ModemManager because 
I think it's its fault, but ModemManager maintainer says it nut fault, because 
nut should not give up to open device and it should retry later. What do you 
think? Some more details can be found in the bug comments.

Cheers,
Michal



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